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Comparing libev/ev.c (file contents):
Revision 1.52 by root, Sat Nov 3 22:10:39 2007 UTC vs.
Revision 1.182 by root, Wed Dec 12 01:27:08 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
659void inline_speed
660downheap (WT *heap, int N, int k)
661{
662 WT w = heap [k];
663
664 for (;;)
412 } 665 {
666 int c = (k << 1) + 1;
413 667
668 if (c >= N)
669 break;
670
671 c += c + 1 < N && heap [c]->at > heap [c + 1]->at
672 ? 1 : 0;
673
674 if (w->at <= heap [c]->at)
675 break;
676
677 heap [k] = heap [c];
678 ((W)heap [k])->active = k + 1;
679
680 k = c;
681 }
682
414 timers [k] = w; 683 heap [k] = w;
415 timers [k]->active = k + 1; 684 ((W)heap [k])->active = k + 1;
685}
686
687void inline_size
688adjustheap (WT *heap, int N, int k)
689{
690 upheap (heap, k);
691 downheap (heap, N, k);
416} 692}
417 693
418/*****************************************************************************/ 694/*****************************************************************************/
419 695
420typedef struct 696typedef struct
421{ 697{
422 struct ev_watcher_list *head; 698 WL head;
423 sig_atomic_t volatile gotsig; 699 sig_atomic_t volatile gotsig;
424} ANSIG; 700} ANSIG;
425 701
426static ANSIG *signals; 702static ANSIG *signals;
427static int signalmax; 703static int signalmax;
428 704
429static int sigpipe [2]; 705static int sigpipe [2];
430static sig_atomic_t volatile gotsig; 706static sig_atomic_t volatile gotsig;
431static struct ev_io sigev; 707static ev_io sigev;
432 708
433static void 709void inline_size
434signals_init (ANSIG *base, int count) 710signals_init (ANSIG *base, int count)
435{ 711{
436 while (count--) 712 while (count--)
437 { 713 {
438 base->head = 0; 714 base->head = 0;
… …
443} 719}
444 720
445static void 721static void
446sighandler (int signum) 722sighandler (int signum)
447{ 723{
724#if _WIN32
725 signal (signum, sighandler);
726#endif
727
448 signals [signum - 1].gotsig = 1; 728 signals [signum - 1].gotsig = 1;
449 729
450 if (!gotsig) 730 if (!gotsig)
451 { 731 {
452 int old_errno = errno; 732 int old_errno = errno;
… …
454 write (sigpipe [1], &signum, 1); 734 write (sigpipe [1], &signum, 1);
455 errno = old_errno; 735 errno = old_errno;
456 } 736 }
457} 737}
458 738
739void noinline
740ev_feed_signal_event (EV_P_ int signum)
741{
742 WL w;
743
744#if EV_MULTIPLICITY
745 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
746#endif
747
748 --signum;
749
750 if (signum < 0 || signum >= signalmax)
751 return;
752
753 signals [signum].gotsig = 0;
754
755 for (w = signals [signum].head; w; w = w->next)
756 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
757}
758
459static void 759static void
460sigcb (EV_P_ struct ev_io *iow, int revents) 760sigcb (EV_P_ ev_io *iow, int revents)
461{ 761{
462 struct ev_watcher_list *w;
463 int signum; 762 int signum;
464 763
465 read (sigpipe [0], &revents, 1); 764 read (sigpipe [0], &revents, 1);
466 gotsig = 0; 765 gotsig = 0;
467 766
468 for (signum = signalmax; signum--; ) 767 for (signum = signalmax; signum--; )
469 if (signals [signum].gotsig) 768 if (signals [signum].gotsig)
769 ev_feed_signal_event (EV_A_ signum + 1);
770}
771
772void inline_speed
773fd_intern (int fd)
774{
775#ifdef _WIN32
776 int arg = 1;
777 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
778#else
779 fcntl (fd, F_SETFD, FD_CLOEXEC);
780 fcntl (fd, F_SETFL, O_NONBLOCK);
781#endif
782}
783
784static void noinline
785siginit (EV_P)
786{
787 fd_intern (sigpipe [0]);
788 fd_intern (sigpipe [1]);
789
790 ev_io_set (&sigev, sigpipe [0], EV_READ);
791 ev_io_start (EV_A_ &sigev);
792 ev_unref (EV_A); /* child watcher should not keep loop alive */
793}
794
795/*****************************************************************************/
796
797static WL childs [EV_PID_HASHSIZE];
798
799#ifndef _WIN32
800
801static ev_signal childev;
802
803void inline_speed
804child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
805{
806 ev_child *w;
807
808 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
809 if (w->pid == pid || !w->pid)
470 { 810 {
471 signals [signum].gotsig = 0; 811 ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */
472 812 w->rpid = pid;
473 for (w = signals [signum].head; w; w = w->next) 813 w->rstatus = status;
474 event (EV_A_ (W)w, EV_SIGNAL); 814 ev_feed_event (EV_A_ (W)w, EV_CHILD);
475 } 815 }
476} 816}
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 ev_unref (EV_A); /* child watcher should not keep loop alive */
493}
494
495/*****************************************************************************/
496
497static struct ev_idle **idles;
498static int idlemax, idlecnt;
499
500static struct ev_prepare **prepares;
501static int preparemax, preparecnt;
502
503static struct ev_check **checks;
504static int checkmax, checkcnt;
505
506/*****************************************************************************/
507
508static struct ev_child *childs [PID_HASHSIZE];
509static struct ev_signal childev;
510
511#ifndef WIN32
512 817
513#ifndef WCONTINUED 818#ifndef WCONTINUED
514# define WCONTINUED 0 819# define WCONTINUED 0
515#endif 820#endif
516 821
517static void 822static void
518child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
519{
520 struct ev_child *w;
521
522 for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
523 if (w->pid == pid || !w->pid)
524 {
525 w->priority = sw->priority; /* need to do it *now* */
526 w->rpid = pid;
527 w->rstatus = status;
528 event (EV_A_ (W)w, EV_CHILD);
529 }
530}
531
532static void
533childcb (EV_P_ struct ev_signal *sw, int revents) 823childcb (EV_P_ ev_signal *sw, int revents)
534{ 824{
535 int pid, status; 825 int pid, status;
536 826
827 /* some systems define WCONTINUED but then fail to support it (linux 2.4) */
537 if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) 828 if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
538 { 829 if (!WCONTINUED
830 || errno != EINVAL
831 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
832 return;
833
539 /* make sure we are called again until all childs have been reaped */ 834 /* make sure we are called again until all childs have been reaped */
835 /* we need to do it this way so that the callback gets called before we continue */
540 event (EV_A_ (W)sw, EV_SIGNAL); 836 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
541 837
542 child_reap (EV_A_ sw, pid, pid, status); 838 child_reap (EV_A_ sw, pid, pid, status);
839 if (EV_PID_HASHSIZE > 1)
543 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */ 840 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
544 }
545} 841}
546 842
547#endif 843#endif
548 844
549/*****************************************************************************/ 845/*****************************************************************************/
550 846
847#if EV_USE_PORT
848# include "ev_port.c"
849#endif
551#if EV_USE_KQUEUE 850#if EV_USE_KQUEUE
552# include "ev_kqueue.c" 851# include "ev_kqueue.c"
553#endif 852#endif
554#if EV_USE_EPOLL 853#if EV_USE_EPOLL
555# include "ev_epoll.c" 854# include "ev_epoll.c"
556#endif 855#endif
557#if EV_USEV_POLL 856#if EV_USE_POLL
558# include "ev_poll.c" 857# include "ev_poll.c"
559#endif 858#endif
560#if EV_USE_SELECT 859#if EV_USE_SELECT
561# include "ev_select.c" 860# include "ev_select.c"
562#endif 861#endif
… …
572{ 871{
573 return EV_VERSION_MINOR; 872 return EV_VERSION_MINOR;
574} 873}
575 874
576/* return true if we are running with elevated privileges and should ignore env variables */ 875/* return true if we are running with elevated privileges and should ignore env variables */
577static int 876int inline_size
578enable_secure (void) 877enable_secure (void)
579{ 878{
580#ifdef WIN32 879#ifdef _WIN32
581 return 0; 880 return 0;
582#else 881#else
583 return getuid () != geteuid () 882 return getuid () != geteuid ()
584 || getgid () != getegid (); 883 || getgid () != getegid ();
585#endif 884#endif
586} 885}
587 886
588int 887unsigned int
589ev_method (EV_P) 888ev_supported_backends (void)
590{ 889{
591 return method; 890 unsigned int flags = 0;
592}
593 891
594int 892 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
595ev_init (EV_P_ int methods) 893 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
894 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
895 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
896 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
897
898 return flags;
899}
900
901unsigned int
902ev_recommended_backends (void)
596{ 903{
597 if (!method) 904 unsigned int flags = ev_supported_backends ();
905
906#ifndef __NetBSD__
907 /* kqueue is borked on everything but netbsd apparently */
908 /* it usually doesn't work correctly on anything but sockets and pipes */
909 flags &= ~EVBACKEND_KQUEUE;
910#endif
911#ifdef __APPLE__
912 // flags &= ~EVBACKEND_KQUEUE; for documentation
913 flags &= ~EVBACKEND_POLL;
914#endif
915
916 return flags;
917}
918
919unsigned int
920ev_embeddable_backends (void)
921{
922 return EVBACKEND_EPOLL
923 | EVBACKEND_KQUEUE
924 | EVBACKEND_PORT;
925}
926
927unsigned int
928ev_backend (EV_P)
929{
930 return backend;
931}
932
933unsigned int
934ev_loop_count (EV_P)
935{
936 return loop_count;
937}
938
939static void noinline
940loop_init (EV_P_ unsigned int flags)
941{
942 if (!backend)
598 { 943 {
599#if EV_USE_MONOTONIC 944#if EV_USE_MONOTONIC
600 { 945 {
601 struct timespec ts; 946 struct timespec ts;
602 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 947 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
603 have_monotonic = 1; 948 have_monotonic = 1;
604 } 949 }
605#endif 950#endif
606 951
607 rt_now = ev_time (); 952 ev_rt_now = ev_time ();
608 mn_now = get_clock (); 953 mn_now = get_clock ();
609 now_floor = mn_now; 954 now_floor = mn_now;
610 diff = rt_now - mn_now; 955 rtmn_diff = ev_rt_now - mn_now;
611 956
612 if (pipe (sigpipe)) 957 /* pid check not overridable via env */
613 return 0; 958#ifndef _WIN32
959 if (flags & EVFLAG_FORKCHECK)
960 curpid = getpid ();
961#endif
614 962
615 if (methods == EVMETHOD_AUTO) 963 if (!(flags & EVFLAG_NOENV)
616 if (!enable_secure () && getenv ("LIBmethodS")) 964 && !enable_secure ()
617 methods = atoi (getenv ("LIBmethodS")); 965 && getenv ("LIBEV_FLAGS"))
618 else 966 flags = atoi (getenv ("LIBEV_FLAGS"));
619 methods = EVMETHOD_ANY;
620 967
621 method = 0; 968 if (!(flags & 0x0000ffffUL))
969 flags |= ev_recommended_backends ();
970
971 backend = 0;
972 backend_fd = -1;
973#if EV_USE_INOTIFY
974 fs_fd = -2;
975#endif
976
977#if EV_USE_PORT
978 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
979#endif
622#if EV_USE_KQUEUE 980#if EV_USE_KQUEUE
623 if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods); 981 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
624#endif 982#endif
625#if EV_USE_EPOLL 983#if EV_USE_EPOLL
626 if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods); 984 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
627#endif 985#endif
628#if EV_USEV_POLL 986#if EV_USE_POLL
629 if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods); 987 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
630#endif 988#endif
631#if EV_USE_SELECT 989#if EV_USE_SELECT
632 if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods); 990 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
633#endif 991#endif
634 992
635 if (method) 993 ev_init (&sigev, sigcb);
994 ev_set_priority (&sigev, EV_MAXPRI);
995 }
996}
997
998static void noinline
999loop_destroy (EV_P)
1000{
1001 int i;
1002
1003#if EV_USE_INOTIFY
1004 if (fs_fd >= 0)
1005 close (fs_fd);
1006#endif
1007
1008 if (backend_fd >= 0)
1009 close (backend_fd);
1010
1011#if EV_USE_PORT
1012 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1013#endif
1014#if EV_USE_KQUEUE
1015 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
1016#endif
1017#if EV_USE_EPOLL
1018 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
1019#endif
1020#if EV_USE_POLL
1021 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
1022#endif
1023#if EV_USE_SELECT
1024 if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
1025#endif
1026
1027 for (i = NUMPRI; i--; )
1028 {
1029 array_free (pending, [i]);
1030#if EV_IDLE_ENABLE
1031 array_free (idle, [i]);
1032#endif
1033 }
1034
1035 /* have to use the microsoft-never-gets-it-right macro */
1036 array_free (fdchange, EMPTY);
1037 array_free (timer, EMPTY);
1038#if EV_PERIODIC_ENABLE
1039 array_free (periodic, EMPTY);
1040#endif
1041 array_free (prepare, EMPTY);
1042 array_free (check, EMPTY);
1043
1044 backend = 0;
1045}
1046
1047void inline_size infy_fork (EV_P);
1048
1049void inline_size
1050loop_fork (EV_P)
1051{
1052#if EV_USE_PORT
1053 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1054#endif
1055#if EV_USE_KQUEUE
1056 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
1057#endif
1058#if EV_USE_EPOLL
1059 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
1060#endif
1061#if EV_USE_INOTIFY
1062 infy_fork (EV_A);
1063#endif
1064
1065 if (ev_is_active (&sigev))
1066 {
1067 /* default loop */
1068
1069 ev_ref (EV_A);
1070 ev_io_stop (EV_A_ &sigev);
1071 close (sigpipe [0]);
1072 close (sigpipe [1]);
1073
1074 while (pipe (sigpipe))
1075 syserr ("(libev) error creating pipe");
1076
1077 siginit (EV_A);
1078 }
1079
1080 postfork = 0;
1081}
1082
1083#if EV_MULTIPLICITY
1084struct ev_loop *
1085ev_loop_new (unsigned int flags)
1086{
1087 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1088
1089 memset (loop, 0, sizeof (struct ev_loop));
1090
1091 loop_init (EV_A_ flags);
1092
1093 if (ev_backend (EV_A))
1094 return loop;
1095
1096 return 0;
1097}
1098
1099void
1100ev_loop_destroy (EV_P)
1101{
1102 loop_destroy (EV_A);
1103 ev_free (loop);
1104}
1105
1106void
1107ev_loop_fork (EV_P)
1108{
1109 postfork = 1;
1110}
1111
1112#endif
1113
1114#if EV_MULTIPLICITY
1115struct ev_loop *
1116ev_default_loop_init (unsigned int flags)
1117#else
1118int
1119ev_default_loop (unsigned int flags)
1120#endif
1121{
1122 if (sigpipe [0] == sigpipe [1])
1123 if (pipe (sigpipe))
1124 return 0;
1125
1126 if (!ev_default_loop_ptr)
1127 {
1128#if EV_MULTIPLICITY
1129 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
1130#else
1131 ev_default_loop_ptr = 1;
1132#endif
1133
1134 loop_init (EV_A_ flags);
1135
1136 if (ev_backend (EV_A))
636 { 1137 {
637 ev_watcher_init (&sigev, sigcb);
638 ev_set_priority (&sigev, EV_MAXPRI);
639 siginit (EV_A); 1138 siginit (EV_A);
640 1139
641#ifndef WIN32 1140#ifndef _WIN32
642 ev_signal_init (&childev, childcb, SIGCHLD); 1141 ev_signal_init (&childev, childcb, SIGCHLD);
643 ev_set_priority (&childev, EV_MAXPRI); 1142 ev_set_priority (&childev, EV_MAXPRI);
644 ev_signal_start (EV_A_ &childev); 1143 ev_signal_start (EV_A_ &childev);
645 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1144 ev_unref (EV_A); /* child watcher should not keep loop alive */
646#endif 1145#endif
647 } 1146 }
1147 else
1148 ev_default_loop_ptr = 0;
648 } 1149 }
649 1150
650 return method; 1151 return ev_default_loop_ptr;
1152}
1153
1154void
1155ev_default_destroy (void)
1156{
1157#if EV_MULTIPLICITY
1158 struct ev_loop *loop = ev_default_loop_ptr;
1159#endif
1160
1161#ifndef _WIN32
1162 ev_ref (EV_A); /* child watcher */
1163 ev_signal_stop (EV_A_ &childev);
1164#endif
1165
1166 ev_ref (EV_A); /* signal watcher */
1167 ev_io_stop (EV_A_ &sigev);
1168
1169 close (sigpipe [0]); sigpipe [0] = 0;
1170 close (sigpipe [1]); sigpipe [1] = 0;
1171
1172 loop_destroy (EV_A);
1173}
1174
1175void
1176ev_default_fork (void)
1177{
1178#if EV_MULTIPLICITY
1179 struct ev_loop *loop = ev_default_loop_ptr;
1180#endif
1181
1182 if (backend)
1183 postfork = 1;
651} 1184}
652 1185
653/*****************************************************************************/ 1186/*****************************************************************************/
654 1187
655void 1188void
656ev_fork_prepare (void) 1189ev_invoke (EV_P_ void *w, int revents)
657{ 1190{
658 /* nop */ 1191 EV_CB_INVOKE ((W)w, revents);
659} 1192}
660 1193
661void 1194void inline_speed
662ev_fork_parent (void)
663{
664 /* nop */
665}
666
667void
668ev_fork_child (void)
669{
670#if EV_USE_EPOLL
671 if (method == EVMETHOD_EPOLL)
672 epoll_postfork_child ();
673#endif
674
675 ev_io_stop (&sigev);
676 close (sigpipe [0]);
677 close (sigpipe [1]);
678 pipe (sigpipe);
679 siginit ();
680}
681
682/*****************************************************************************/
683
684static void
685call_pending (EV_P) 1195call_pending (EV_P)
686{ 1196{
687 int pri; 1197 int pri;
688 1198
689 for (pri = NUMPRI; pri--; ) 1199 for (pri = NUMPRI; pri--; )
690 while (pendingcnt [pri]) 1200 while (pendingcnt [pri])
691 { 1201 {
692 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 1202 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
693 1203
694 if (p->w) 1204 if (expect_true (p->w))
695 { 1205 {
1206 /*assert (("non-pending watcher on pending list", p->w->pending));*/
1207
696 p->w->pending = 0; 1208 p->w->pending = 0;
697 p->w->cb (EV_A_ p->w, p->events); 1209 EV_CB_INVOKE (p->w, p->events);
698 } 1210 }
699 } 1211 }
700} 1212}
701 1213
702static void 1214void inline_size
703timers_reify (EV_P) 1215timers_reify (EV_P)
704{ 1216{
705 while (timercnt && timers [0]->at <= mn_now) 1217 while (timercnt && ((WT)timers [0])->at <= mn_now)
706 { 1218 {
707 struct ev_timer *w = timers [0]; 1219 ev_timer *w = (ev_timer *)timers [0];
1220
1221 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
708 1222
709 /* first reschedule or stop timer */ 1223 /* first reschedule or stop timer */
710 if (w->repeat) 1224 if (w->repeat)
711 { 1225 {
712 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 1226 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1227
713 w->at = mn_now + w->repeat; 1228 ((WT)w)->at += w->repeat;
1229 if (((WT)w)->at < mn_now)
1230 ((WT)w)->at = mn_now;
1231
714 downheap ((WT *)timers, timercnt, 0); 1232 downheap (timers, timercnt, 0);
715 } 1233 }
716 else 1234 else
717 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ 1235 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
718 1236
719 event ((W)w, EV_TIMEOUT); 1237 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
720 } 1238 }
721} 1239}
722 1240
723static void 1241#if EV_PERIODIC_ENABLE
1242void inline_size
724periodics_reify (EV_P) 1243periodics_reify (EV_P)
725{ 1244{
726 while (periodiccnt && periodics [0]->at <= rt_now) 1245 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
727 { 1246 {
728 struct ev_periodic *w = periodics [0]; 1247 ev_periodic *w = (ev_periodic *)periodics [0];
1248
1249 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
729 1250
730 /* first reschedule or stop timer */ 1251 /* first reschedule or stop timer */
731 if (w->interval) 1252 if (w->reschedule_cb)
732 { 1253 {
1254 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1255 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1256 downheap (periodics, periodiccnt, 0);
1257 }
1258 else if (w->interval)
1259 {
733 w->at += floor ((rt_now - w->at) / w->interval + 1.) * w->interval; 1260 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1261 if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
734 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > rt_now)); 1262 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
735 downheap ((WT *)periodics, periodiccnt, 0); 1263 downheap (periodics, periodiccnt, 0);
736 } 1264 }
737 else 1265 else
738 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 1266 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
739 1267
740 event (EV_A_ (W)w, EV_PERIODIC); 1268 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
741 } 1269 }
742} 1270}
743 1271
744static void 1272static void noinline
745periodics_reschedule (EV_P_ ev_tstamp diff) 1273periodics_reschedule (EV_P)
746{ 1274{
747 int i; 1275 int i;
748 1276
749 /* adjust periodics after time jump */ 1277 /* adjust periodics after time jump */
750 for (i = 0; i < periodiccnt; ++i) 1278 for (i = 0; i < periodiccnt; ++i)
751 { 1279 {
752 struct ev_periodic *w = periodics [i]; 1280 ev_periodic *w = (ev_periodic *)periodics [i];
753 1281
1282 if (w->reschedule_cb)
1283 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
754 if (w->interval) 1284 else if (w->interval)
1285 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1286 }
1287
1288 /* now rebuild the heap */
1289 for (i = periodiccnt >> 1; i--; )
1290 downheap (periodics, periodiccnt, i);
1291}
1292#endif
1293
1294#if EV_IDLE_ENABLE
1295void inline_size
1296idle_reify (EV_P)
1297{
1298 if (expect_false (idleall))
1299 {
1300 int pri;
1301
1302 for (pri = NUMPRI; pri--; )
755 { 1303 {
756 ev_tstamp diff = ceil ((rt_now - w->at) / w->interval) * w->interval; 1304 if (pendingcnt [pri])
1305 break;
757 1306
758 if (fabs (diff) >= 1e-4) 1307 if (idlecnt [pri])
759 { 1308 {
760 ev_periodic_stop (EV_A_ w); 1309 queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
761 ev_periodic_start (EV_A_ w); 1310 break;
762
763 i = 0; /* restart loop, inefficient, but time jumps should be rare */
764 } 1311 }
765 } 1312 }
766 } 1313 }
767} 1314}
1315#endif
768 1316
769inline int 1317void inline_speed
770time_update_monotonic (EV_P) 1318time_update (EV_P_ ev_tstamp max_block)
771{
772 mn_now = get_clock ();
773
774 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
775 {
776 rt_now = mn_now + diff;
777 return 0;
778 }
779 else
780 {
781 now_floor = mn_now;
782 rt_now = ev_time ();
783 return 1;
784 }
785}
786
787static void
788time_update (EV_P)
789{ 1319{
790 int i; 1320 int i;
791 1321
792#if EV_USE_MONOTONIC 1322#if EV_USE_MONOTONIC
793 if (expect_true (have_monotonic)) 1323 if (expect_true (have_monotonic))
794 { 1324 {
795 if (time_update_monotonic (EV_A)) 1325 ev_tstamp odiff = rtmn_diff;
1326
1327 mn_now = get_clock ();
1328
1329 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
1330 /* interpolate in the meantime */
1331 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
796 { 1332 {
797 ev_tstamp odiff = diff; 1333 ev_rt_now = rtmn_diff + mn_now;
798 1334 return;
799 for (i = 4; --i; ) /* loop a few times, before making important decisions */
800 {
801 diff = rt_now - mn_now;
802
803 if (fabs (odiff - diff) < MIN_TIMEJUMP)
804 return; /* all is well */
805
806 rt_now = ev_time ();
807 mn_now = get_clock ();
808 now_floor = mn_now;
809 }
810
811 periodics_reschedule (EV_A_ diff - odiff);
812 /* no timer adjustment, as the monotonic clock doesn't jump */
813 } 1335 }
1336
1337 now_floor = mn_now;
1338 ev_rt_now = ev_time ();
1339
1340 /* loop a few times, before making important decisions.
1341 * on the choice of "4": one iteration isn't enough,
1342 * in case we get preempted during the calls to
1343 * ev_time and get_clock. a second call is almost guaranteed
1344 * to succeed in that case, though. and looping a few more times
1345 * doesn't hurt either as we only do this on time-jumps or
1346 * in the unlikely event of having been preempted here.
1347 */
1348 for (i = 4; --i; )
1349 {
1350 rtmn_diff = ev_rt_now - mn_now;
1351
1352 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1353 return; /* all is well */
1354
1355 ev_rt_now = ev_time ();
1356 mn_now = get_clock ();
1357 now_floor = mn_now;
1358 }
1359
1360# if EV_PERIODIC_ENABLE
1361 periodics_reschedule (EV_A);
1362# endif
1363 /* no timer adjustment, as the monotonic clock doesn't jump */
1364 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
814 } 1365 }
815 else 1366 else
816#endif 1367#endif
817 { 1368 {
818 rt_now = ev_time (); 1369 ev_rt_now = ev_time ();
819 1370
820 if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP)) 1371 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
821 { 1372 {
1373#if EV_PERIODIC_ENABLE
822 periodics_reschedule (EV_A_ rt_now - mn_now); 1374 periodics_reschedule (EV_A);
823 1375#endif
824 /* adjust timers. this is easy, as the offset is the same for all */ 1376 /* adjust timers. this is easy, as the offset is the same for all of them */
825 for (i = 0; i < timercnt; ++i) 1377 for (i = 0; i < timercnt; ++i)
826 timers [i]->at += diff; 1378 ((WT)timers [i])->at += ev_rt_now - mn_now;
827 } 1379 }
828 1380
829 mn_now = rt_now; 1381 mn_now = ev_rt_now;
830 } 1382 }
831} 1383}
832 1384
833void 1385void
834ev_ref (EV_P) 1386ev_ref (EV_P)
… …
845static int loop_done; 1397static int loop_done;
846 1398
847void 1399void
848ev_loop (EV_P_ int flags) 1400ev_loop (EV_P_ int flags)
849{ 1401{
850 double block;
851 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0; 1402 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
1403 ? EVUNLOOP_ONE
1404 : EVUNLOOP_CANCEL;
1405
1406 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
852 1407
853 do 1408 do
854 { 1409 {
1410#ifndef _WIN32
1411 if (expect_false (curpid)) /* penalise the forking check even more */
1412 if (expect_false (getpid () != curpid))
1413 {
1414 curpid = getpid ();
1415 postfork = 1;
1416 }
1417#endif
1418
1419#if EV_FORK_ENABLE
1420 /* we might have forked, so queue fork handlers */
1421 if (expect_false (postfork))
1422 if (forkcnt)
1423 {
1424 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1425 call_pending (EV_A);
1426 }
1427#endif
1428
855 /* queue check watchers (and execute them) */ 1429 /* queue prepare watchers (and execute them) */
856 if (expect_false (preparecnt)) 1430 if (expect_false (preparecnt))
857 { 1431 {
858 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 1432 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
859 call_pending (EV_A); 1433 call_pending (EV_A);
860 } 1434 }
861 1435
1436 if (expect_false (!activecnt))
1437 break;
1438
1439 /* we might have forked, so reify kernel state if necessary */
1440 if (expect_false (postfork))
1441 loop_fork (EV_A);
1442
862 /* update fd-related kernel structures */ 1443 /* update fd-related kernel structures */
863 fd_reify (EV_A); 1444 fd_reify (EV_A);
864 1445
865 /* calculate blocking time */ 1446 /* calculate blocking time */
1447 {
1448 ev_tstamp block;
866 1449
867 /* we only need this for !monotonic clockor timers, but as we basically 1450 if (expect_false (flags & EVLOOP_NONBLOCK || idleall || !activecnt))
868 always have timers, we just calculate it always */ 1451 block = 0.; /* do not block at all */
869#if EV_USE_MONOTONIC
870 if (expect_true (have_monotonic))
871 time_update_monotonic (EV_A);
872 else 1452 else
873#endif
874 { 1453 {
875 rt_now = ev_time (); 1454 /* update time to cancel out callback processing overhead */
876 mn_now = rt_now; 1455 time_update (EV_A_ 1e100);
877 }
878 1456
879 if (flags & EVLOOP_NONBLOCK || idlecnt)
880 block = 0.;
881 else
882 {
883 block = MAX_BLOCKTIME; 1457 block = MAX_BLOCKTIME;
884 1458
885 if (timercnt) 1459 if (timercnt)
886 { 1460 {
887 ev_tstamp to = timers [0]->at - mn_now + method_fudge; 1461 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
888 if (block > to) block = to; 1462 if (block > to) block = to;
889 } 1463 }
890 1464
1465#if EV_PERIODIC_ENABLE
891 if (periodiccnt) 1466 if (periodiccnt)
892 { 1467 {
893 ev_tstamp to = periodics [0]->at - rt_now + method_fudge; 1468 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
894 if (block > to) block = to; 1469 if (block > to) block = to;
895 } 1470 }
1471#endif
896 1472
897 if (block < 0.) block = 0.; 1473 if (expect_false (block < 0.)) block = 0.;
898 } 1474 }
899 1475
1476 ++loop_count;
900 method_poll (EV_A_ block); 1477 backend_poll (EV_A_ block);
901 1478
902 /* update rt_now, do magic */ 1479 /* update ev_rt_now, do magic */
903 time_update (EV_A); 1480 time_update (EV_A_ block);
1481 }
904 1482
905 /* queue pending timers and reschedule them */ 1483 /* queue pending timers and reschedule them */
906 timers_reify (EV_A); /* relative timers called last */ 1484 timers_reify (EV_A); /* relative timers called last */
1485#if EV_PERIODIC_ENABLE
907 periodics_reify (EV_A); /* absolute timers called first */ 1486 periodics_reify (EV_A); /* absolute timers called first */
1487#endif
908 1488
1489#if EV_IDLE_ENABLE
909 /* queue idle watchers unless io or timers are pending */ 1490 /* queue idle watchers unless other events are pending */
910 if (!pendingcnt) 1491 idle_reify (EV_A);
911 queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); 1492#endif
912 1493
913 /* queue check watchers, to be executed first */ 1494 /* queue check watchers, to be executed first */
914 if (checkcnt) 1495 if (expect_false (checkcnt))
915 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 1496 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
916 1497
917 call_pending (EV_A); 1498 call_pending (EV_A);
1499
918 } 1500 }
919 while (activecnt && !loop_done); 1501 while (expect_true (activecnt && !loop_done));
920 1502
921 if (loop_done != 2) 1503 if (loop_done == EVUNLOOP_ONE)
922 loop_done = 0; 1504 loop_done = EVUNLOOP_CANCEL;
923} 1505}
924 1506
925void 1507void
926ev_unloop (EV_P_ int how) 1508ev_unloop (EV_P_ int how)
927{ 1509{
928 loop_done = how; 1510 loop_done = how;
929} 1511}
930 1512
931/*****************************************************************************/ 1513/*****************************************************************************/
932 1514
933inline void 1515void inline_size
934wlist_add (WL *head, WL elem) 1516wlist_add (WL *head, WL elem)
935{ 1517{
936 elem->next = *head; 1518 elem->next = *head;
937 *head = elem; 1519 *head = elem;
938} 1520}
939 1521
940inline void 1522void inline_size
941wlist_del (WL *head, WL elem) 1523wlist_del (WL *head, WL elem)
942{ 1524{
943 while (*head) 1525 while (*head)
944 { 1526 {
945 if (*head == elem) 1527 if (*head == elem)
… …
950 1532
951 head = &(*head)->next; 1533 head = &(*head)->next;
952 } 1534 }
953} 1535}
954 1536
955inline void 1537void inline_speed
956ev_clear_pending (EV_P_ W w) 1538clear_pending (EV_P_ W w)
957{ 1539{
958 if (w->pending) 1540 if (w->pending)
959 { 1541 {
960 pendings [ABSPRI (w)][w->pending - 1].w = 0; 1542 pendings [ABSPRI (w)][w->pending - 1].w = 0;
961 w->pending = 0; 1543 w->pending = 0;
962 } 1544 }
963} 1545}
964 1546
965inline void 1547int
1548ev_clear_pending (EV_P_ void *w)
1549{
1550 W w_ = (W)w;
1551 int pending = w_->pending;
1552
1553 if (expect_true (pending))
1554 {
1555 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
1556 w_->pending = 0;
1557 p->w = 0;
1558 return p->events;
1559 }
1560 else
1561 return 0;
1562}
1563
1564void inline_size
1565pri_adjust (EV_P_ W w)
1566{
1567 int pri = w->priority;
1568 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1569 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1570 w->priority = pri;
1571}
1572
1573void inline_speed
966ev_start (EV_P_ W w, int active) 1574ev_start (EV_P_ W w, int active)
967{ 1575{
968 if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; 1576 pri_adjust (EV_A_ w);
969 if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
970
971 w->active = active; 1577 w->active = active;
972 ev_ref (EV_A); 1578 ev_ref (EV_A);
973} 1579}
974 1580
975inline void 1581void inline_size
976ev_stop (EV_P_ W w) 1582ev_stop (EV_P_ W w)
977{ 1583{
978 ev_unref (EV_A); 1584 ev_unref (EV_A);
979 w->active = 0; 1585 w->active = 0;
980} 1586}
981 1587
982/*****************************************************************************/ 1588/*****************************************************************************/
983 1589
984void 1590void noinline
985ev_io_start (EV_P_ struct ev_io *w) 1591ev_io_start (EV_P_ ev_io *w)
986{ 1592{
987 int fd = w->fd; 1593 int fd = w->fd;
988 1594
989 if (ev_is_active (w)) 1595 if (expect_false (ev_is_active (w)))
990 return; 1596 return;
991 1597
992 assert (("ev_io_start called with negative fd", fd >= 0)); 1598 assert (("ev_io_start called with negative fd", fd >= 0));
993 1599
994 ev_start (EV_A_ (W)w, 1); 1600 ev_start (EV_A_ (W)w, 1);
995 array_needsize (anfds, anfdmax, fd + 1, anfds_init); 1601 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
996 wlist_add ((WL *)&anfds[fd].head, (WL)w); 1602 wlist_add (&anfds[fd].head, (WL)w);
997 1603
998 fd_change (EV_A_ fd); 1604 fd_change (EV_A_ fd);
999} 1605}
1000 1606
1001void 1607void noinline
1002ev_io_stop (EV_P_ struct ev_io *w) 1608ev_io_stop (EV_P_ ev_io *w)
1003{ 1609{
1004 ev_clear_pending (EV_A_ (W)w); 1610 clear_pending (EV_A_ (W)w);
1005 if (!ev_is_active (w)) 1611 if (expect_false (!ev_is_active (w)))
1006 return; 1612 return;
1007 1613
1614 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1615
1008 wlist_del ((WL *)&anfds[w->fd].head, (WL)w); 1616 wlist_del (&anfds[w->fd].head, (WL)w);
1009 ev_stop (EV_A_ (W)w); 1617 ev_stop (EV_A_ (W)w);
1010 1618
1011 fd_change (EV_A_ w->fd); 1619 fd_change (EV_A_ w->fd);
1012} 1620}
1013 1621
1014void 1622void noinline
1015ev_timer_start (EV_P_ struct ev_timer *w) 1623ev_timer_start (EV_P_ ev_timer *w)
1016{ 1624{
1017 if (ev_is_active (w)) 1625 if (expect_false (ev_is_active (w)))
1018 return; 1626 return;
1019 1627
1020 w->at += mn_now; 1628 ((WT)w)->at += mn_now;
1021 1629
1022 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 1630 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1023 1631
1024 ev_start (EV_A_ (W)w, ++timercnt); 1632 ev_start (EV_A_ (W)w, ++timercnt);
1025 array_needsize (timers, timermax, timercnt, ); 1633 array_needsize (WT, timers, timermax, timercnt, EMPTY2);
1026 timers [timercnt - 1] = w; 1634 timers [timercnt - 1] = (WT)w;
1027 upheap ((WT *)timers, timercnt - 1); 1635 upheap (timers, timercnt - 1);
1028}
1029 1636
1030void 1637 /*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
1638}
1639
1640void noinline
1031ev_timer_stop (EV_P_ struct ev_timer *w) 1641ev_timer_stop (EV_P_ ev_timer *w)
1032{ 1642{
1033 ev_clear_pending (EV_A_ (W)w); 1643 clear_pending (EV_A_ (W)w);
1034 if (!ev_is_active (w)) 1644 if (expect_false (!ev_is_active (w)))
1035 return; 1645 return;
1036 1646
1037 if (w->active < timercnt--) 1647 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w));
1648
1649 {
1650 int active = ((W)w)->active;
1651
1652 if (expect_true (--active < --timercnt))
1038 { 1653 {
1039 timers [w->active - 1] = timers [timercnt]; 1654 timers [active] = timers [timercnt];
1040 downheap ((WT *)timers, timercnt, w->active - 1); 1655 adjustheap (timers, timercnt, active);
1041 } 1656 }
1657 }
1042 1658
1043 w->at = w->repeat; 1659 ((WT)w)->at -= mn_now;
1044 1660
1045 ev_stop (EV_A_ (W)w); 1661 ev_stop (EV_A_ (W)w);
1046} 1662}
1047 1663
1048void 1664void noinline
1049ev_timer_again (EV_P_ struct ev_timer *w) 1665ev_timer_again (EV_P_ ev_timer *w)
1050{ 1666{
1051 if (ev_is_active (w)) 1667 if (ev_is_active (w))
1052 { 1668 {
1053 if (w->repeat) 1669 if (w->repeat)
1054 { 1670 {
1055 w->at = mn_now + w->repeat; 1671 ((WT)w)->at = mn_now + w->repeat;
1056 downheap ((WT *)timers, timercnt, w->active - 1); 1672 adjustheap (timers, timercnt, ((W)w)->active - 1);
1057 } 1673 }
1058 else 1674 else
1059 ev_timer_stop (EV_A_ w); 1675 ev_timer_stop (EV_A_ w);
1060 } 1676 }
1061 else if (w->repeat) 1677 else if (w->repeat)
1678 {
1679 w->at = w->repeat;
1062 ev_timer_start (EV_A_ w); 1680 ev_timer_start (EV_A_ w);
1681 }
1063} 1682}
1064 1683
1065void 1684#if EV_PERIODIC_ENABLE
1685void noinline
1066ev_periodic_start (EV_P_ struct ev_periodic *w) 1686ev_periodic_start (EV_P_ ev_periodic *w)
1067{ 1687{
1068 if (ev_is_active (w)) 1688 if (expect_false (ev_is_active (w)))
1069 return; 1689 return;
1070 1690
1691 if (w->reschedule_cb)
1692 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1693 else if (w->interval)
1694 {
1071 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 1695 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1072
1073 /* this formula differs from the one in periodic_reify because we do not always round up */ 1696 /* this formula differs from the one in periodic_reify because we do not always round up */
1074 if (w->interval)
1075 w->at += ceil ((rt_now - w->at) / w->interval) * w->interval; 1697 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1698 }
1699 else
1700 ((WT)w)->at = w->offset;
1076 1701
1077 ev_start (EV_A_ (W)w, ++periodiccnt); 1702 ev_start (EV_A_ (W)w, ++periodiccnt);
1078 array_needsize (periodics, periodicmax, periodiccnt, ); 1703 array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2);
1079 periodics [periodiccnt - 1] = w; 1704 periodics [periodiccnt - 1] = (WT)w;
1080 upheap ((WT *)periodics, periodiccnt - 1); 1705 upheap (periodics, periodiccnt - 1);
1081}
1082 1706
1083void 1707 /*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
1708}
1709
1710void noinline
1084ev_periodic_stop (EV_P_ struct ev_periodic *w) 1711ev_periodic_stop (EV_P_ ev_periodic *w)
1085{ 1712{
1086 ev_clear_pending (EV_A_ (W)w); 1713 clear_pending (EV_A_ (W)w);
1087 if (!ev_is_active (w)) 1714 if (expect_false (!ev_is_active (w)))
1088 return; 1715 return;
1089 1716
1090 if (w->active < periodiccnt--) 1717 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w));
1718
1719 {
1720 int active = ((W)w)->active;
1721
1722 if (expect_true (--active < --periodiccnt))
1091 { 1723 {
1092 periodics [w->active - 1] = periodics [periodiccnt]; 1724 periodics [active] = periodics [periodiccnt];
1093 downheap ((WT *)periodics, periodiccnt, w->active - 1); 1725 adjustheap (periodics, periodiccnt, active);
1094 } 1726 }
1727 }
1095 1728
1096 ev_stop (EV_A_ (W)w); 1729 ev_stop (EV_A_ (W)w);
1097} 1730}
1731
1732void noinline
1733ev_periodic_again (EV_P_ ev_periodic *w)
1734{
1735 /* TODO: use adjustheap and recalculation */
1736 ev_periodic_stop (EV_A_ w);
1737 ev_periodic_start (EV_A_ w);
1738}
1739#endif
1098 1740
1099#ifndef SA_RESTART 1741#ifndef SA_RESTART
1100# define SA_RESTART 0 1742# define SA_RESTART 0
1101#endif 1743#endif
1102 1744
1103void 1745void noinline
1104ev_signal_start (EV_P_ struct ev_signal *w) 1746ev_signal_start (EV_P_ ev_signal *w)
1105{ 1747{
1748#if EV_MULTIPLICITY
1749 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1750#endif
1106 if (ev_is_active (w)) 1751 if (expect_false (ev_is_active (w)))
1107 return; 1752 return;
1108 1753
1109 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 1754 assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1110 1755
1756 {
1757#ifndef _WIN32
1758 sigset_t full, prev;
1759 sigfillset (&full);
1760 sigprocmask (SIG_SETMASK, &full, &prev);
1761#endif
1762
1763 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1764
1765#ifndef _WIN32
1766 sigprocmask (SIG_SETMASK, &prev, 0);
1767#endif
1768 }
1769
1111 ev_start (EV_A_ (W)w, 1); 1770 ev_start (EV_A_ (W)w, 1);
1112 array_needsize (signals, signalmax, w->signum, signals_init);
1113 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); 1771 wlist_add (&signals [w->signum - 1].head, (WL)w);
1114 1772
1115 if (!w->next) 1773 if (!((WL)w)->next)
1116 { 1774 {
1775#if _WIN32
1776 signal (w->signum, sighandler);
1777#else
1117 struct sigaction sa; 1778 struct sigaction sa;
1118 sa.sa_handler = sighandler; 1779 sa.sa_handler = sighandler;
1119 sigfillset (&sa.sa_mask); 1780 sigfillset (&sa.sa_mask);
1120 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 1781 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1121 sigaction (w->signum, &sa, 0); 1782 sigaction (w->signum, &sa, 0);
1783#endif
1122 } 1784 }
1123} 1785}
1124 1786
1125void 1787void noinline
1126ev_signal_stop (EV_P_ struct ev_signal *w) 1788ev_signal_stop (EV_P_ ev_signal *w)
1127{ 1789{
1128 ev_clear_pending (EV_A_ (W)w); 1790 clear_pending (EV_A_ (W)w);
1129 if (!ev_is_active (w)) 1791 if (expect_false (!ev_is_active (w)))
1130 return; 1792 return;
1131 1793
1132 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); 1794 wlist_del (&signals [w->signum - 1].head, (WL)w);
1133 ev_stop (EV_A_ (W)w); 1795 ev_stop (EV_A_ (W)w);
1134 1796
1135 if (!signals [w->signum - 1].head) 1797 if (!signals [w->signum - 1].head)
1136 signal (w->signum, SIG_DFL); 1798 signal (w->signum, SIG_DFL);
1137} 1799}
1138 1800
1139void 1801void
1140ev_idle_start (EV_P_ struct ev_idle *w) 1802ev_child_start (EV_P_ ev_child *w)
1141{ 1803{
1804#if EV_MULTIPLICITY
1805 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1806#endif
1142 if (ev_is_active (w)) 1807 if (expect_false (ev_is_active (w)))
1143 return; 1808 return;
1144 1809
1145 ev_start (EV_A_ (W)w, ++idlecnt); 1810 ev_start (EV_A_ (W)w, 1);
1146 array_needsize (idles, idlemax, idlecnt, ); 1811 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1147 idles [idlecnt - 1] = w;
1148} 1812}
1149 1813
1150void 1814void
1151ev_idle_stop (EV_P_ struct ev_idle *w) 1815ev_child_stop (EV_P_ ev_child *w)
1152{ 1816{
1153 ev_clear_pending (EV_A_ (W)w); 1817 clear_pending (EV_A_ (W)w);
1154 if (ev_is_active (w)) 1818 if (expect_false (!ev_is_active (w)))
1155 return; 1819 return;
1156 1820
1157 idles [w->active - 1] = idles [--idlecnt]; 1821 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1158 ev_stop (EV_A_ (W)w); 1822 ev_stop (EV_A_ (W)w);
1159} 1823}
1160 1824
1825#if EV_STAT_ENABLE
1826
1827# ifdef _WIN32
1828# undef lstat
1829# define lstat(a,b) _stati64 (a,b)
1830# endif
1831
1832#define DEF_STAT_INTERVAL 5.0074891
1833#define MIN_STAT_INTERVAL 0.1074891
1834
1835static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
1836
1837#if EV_USE_INOTIFY
1838# define EV_INOTIFY_BUFSIZE 8192
1839
1840static void noinline
1841infy_add (EV_P_ ev_stat *w)
1842{
1843 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);
1844
1845 if (w->wd < 0)
1846 {
1847 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
1848
1849 /* monitor some parent directory for speedup hints */
1850 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
1851 {
1852 char path [4096];
1853 strcpy (path, w->path);
1854
1855 do
1856 {
1857 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
1858 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
1859
1860 char *pend = strrchr (path, '/');
1861
1862 if (!pend)
1863 break; /* whoops, no '/', complain to your admin */
1864
1865 *pend = 0;
1866 w->wd = inotify_add_watch (fs_fd, path, mask);
1867 }
1868 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
1869 }
1870 }
1871 else
1872 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
1873
1874 if (w->wd >= 0)
1875 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
1876}
1877
1878static void noinline
1879infy_del (EV_P_ ev_stat *w)
1880{
1881 int slot;
1882 int wd = w->wd;
1883
1884 if (wd < 0)
1885 return;
1886
1887 w->wd = -2;
1888 slot = wd & (EV_INOTIFY_HASHSIZE - 1);
1889 wlist_del (&fs_hash [slot].head, (WL)w);
1890
1891 /* remove this watcher, if others are watching it, they will rearm */
1892 inotify_rm_watch (fs_fd, wd);
1893}
1894
1895static void noinline
1896infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
1897{
1898 if (slot < 0)
1899 /* overflow, need to check for all hahs slots */
1900 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
1901 infy_wd (EV_A_ slot, wd, ev);
1902 else
1903 {
1904 WL w_;
1905
1906 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
1907 {
1908 ev_stat *w = (ev_stat *)w_;
1909 w_ = w_->next; /* lets us remove this watcher and all before it */
1910
1911 if (w->wd == wd || wd == -1)
1912 {
1913 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
1914 {
1915 w->wd = -1;
1916 infy_add (EV_A_ w); /* re-add, no matter what */
1917 }
1918
1919 stat_timer_cb (EV_A_ &w->timer, 0);
1920 }
1921 }
1922 }
1923}
1924
1925static void
1926infy_cb (EV_P_ ev_io *w, int revents)
1927{
1928 char buf [EV_INOTIFY_BUFSIZE];
1929 struct inotify_event *ev = (struct inotify_event *)buf;
1930 int ofs;
1931 int len = read (fs_fd, buf, sizeof (buf));
1932
1933 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
1934 infy_wd (EV_A_ ev->wd, ev->wd, ev);
1935}
1936
1937void inline_size
1938infy_init (EV_P)
1939{
1940 if (fs_fd != -2)
1941 return;
1942
1943 fs_fd = inotify_init ();
1944
1945 if (fs_fd >= 0)
1946 {
1947 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
1948 ev_set_priority (&fs_w, EV_MAXPRI);
1949 ev_io_start (EV_A_ &fs_w);
1950 }
1951}
1952
1953void inline_size
1954infy_fork (EV_P)
1955{
1956 int slot;
1957
1958 if (fs_fd < 0)
1959 return;
1960
1961 close (fs_fd);
1962 fs_fd = inotify_init ();
1963
1964 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
1965 {
1966 WL w_ = fs_hash [slot].head;
1967 fs_hash [slot].head = 0;
1968
1969 while (w_)
1970 {
1971 ev_stat *w = (ev_stat *)w_;
1972 w_ = w_->next; /* lets us add this watcher */
1973
1974 w->wd = -1;
1975
1976 if (fs_fd >= 0)
1977 infy_add (EV_A_ w); /* re-add, no matter what */
1978 else
1979 ev_timer_start (EV_A_ &w->timer);
1980 }
1981
1982 }
1983}
1984
1985#endif
1986
1161void 1987void
1988ev_stat_stat (EV_P_ ev_stat *w)
1989{
1990 if (lstat (w->path, &w->attr) < 0)
1991 w->attr.st_nlink = 0;
1992 else if (!w->attr.st_nlink)
1993 w->attr.st_nlink = 1;
1994}
1995
1996static void noinline
1997stat_timer_cb (EV_P_ ev_timer *w_, int revents)
1998{
1999 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2000
2001 /* we copy this here each the time so that */
2002 /* prev has the old value when the callback gets invoked */
2003 w->prev = w->attr;
2004 ev_stat_stat (EV_A_ w);
2005
2006 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2007 if (
2008 w->prev.st_dev != w->attr.st_dev
2009 || w->prev.st_ino != w->attr.st_ino
2010 || w->prev.st_mode != w->attr.st_mode
2011 || w->prev.st_nlink != w->attr.st_nlink
2012 || w->prev.st_uid != w->attr.st_uid
2013 || w->prev.st_gid != w->attr.st_gid
2014 || w->prev.st_rdev != w->attr.st_rdev
2015 || w->prev.st_size != w->attr.st_size
2016 || w->prev.st_atime != w->attr.st_atime
2017 || w->prev.st_mtime != w->attr.st_mtime
2018 || w->prev.st_ctime != w->attr.st_ctime
2019 ) {
2020 #if EV_USE_INOTIFY
2021 infy_del (EV_A_ w);
2022 infy_add (EV_A_ w);
2023 ev_stat_stat (EV_A_ w); /* avoid race... */
2024 #endif
2025
2026 ev_feed_event (EV_A_ w, EV_STAT);
2027 }
2028}
2029
2030void
2031ev_stat_start (EV_P_ ev_stat *w)
2032{
2033 if (expect_false (ev_is_active (w)))
2034 return;
2035
2036 /* since we use memcmp, we need to clear any padding data etc. */
2037 memset (&w->prev, 0, sizeof (ev_statdata));
2038 memset (&w->attr, 0, sizeof (ev_statdata));
2039
2040 ev_stat_stat (EV_A_ w);
2041
2042 if (w->interval < MIN_STAT_INTERVAL)
2043 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2044
2045 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
2046 ev_set_priority (&w->timer, ev_priority (w));
2047
2048#if EV_USE_INOTIFY
2049 infy_init (EV_A);
2050
2051 if (fs_fd >= 0)
2052 infy_add (EV_A_ w);
2053 else
2054#endif
2055 ev_timer_start (EV_A_ &w->timer);
2056
2057 ev_start (EV_A_ (W)w, 1);
2058}
2059
2060void
2061ev_stat_stop (EV_P_ ev_stat *w)
2062{
2063 clear_pending (EV_A_ (W)w);
2064 if (expect_false (!ev_is_active (w)))
2065 return;
2066
2067#if EV_USE_INOTIFY
2068 infy_del (EV_A_ w);
2069#endif
2070 ev_timer_stop (EV_A_ &w->timer);
2071
2072 ev_stop (EV_A_ (W)w);
2073}
2074#endif
2075
2076#if EV_IDLE_ENABLE
2077void
2078ev_idle_start (EV_P_ ev_idle *w)
2079{
2080 if (expect_false (ev_is_active (w)))
2081 return;
2082
2083 pri_adjust (EV_A_ (W)w);
2084
2085 {
2086 int active = ++idlecnt [ABSPRI (w)];
2087
2088 ++idleall;
2089 ev_start (EV_A_ (W)w, active);
2090
2091 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2092 idles [ABSPRI (w)][active - 1] = w;
2093 }
2094}
2095
2096void
2097ev_idle_stop (EV_P_ ev_idle *w)
2098{
2099 clear_pending (EV_A_ (W)w);
2100 if (expect_false (!ev_is_active (w)))
2101 return;
2102
2103 {
2104 int active = ((W)w)->active;
2105
2106 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2107 ((W)idles [ABSPRI (w)][active - 1])->active = active;
2108
2109 ev_stop (EV_A_ (W)w);
2110 --idleall;
2111 }
2112}
2113#endif
2114
2115void
1162ev_prepare_start (EV_P_ struct ev_prepare *w) 2116ev_prepare_start (EV_P_ ev_prepare *w)
1163{ 2117{
1164 if (ev_is_active (w)) 2118 if (expect_false (ev_is_active (w)))
1165 return; 2119 return;
1166 2120
1167 ev_start (EV_A_ (W)w, ++preparecnt); 2121 ev_start (EV_A_ (W)w, ++preparecnt);
1168 array_needsize (prepares, preparemax, preparecnt, ); 2122 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
1169 prepares [preparecnt - 1] = w; 2123 prepares [preparecnt - 1] = w;
1170} 2124}
1171 2125
1172void 2126void
1173ev_prepare_stop (EV_P_ struct ev_prepare *w) 2127ev_prepare_stop (EV_P_ ev_prepare *w)
1174{ 2128{
1175 ev_clear_pending (EV_A_ (W)w); 2129 clear_pending (EV_A_ (W)w);
1176 if (ev_is_active (w)) 2130 if (expect_false (!ev_is_active (w)))
1177 return; 2131 return;
1178 2132
2133 {
2134 int active = ((W)w)->active;
1179 prepares [w->active - 1] = prepares [--preparecnt]; 2135 prepares [active - 1] = prepares [--preparecnt];
2136 ((W)prepares [active - 1])->active = active;
2137 }
2138
1180 ev_stop (EV_A_ (W)w); 2139 ev_stop (EV_A_ (W)w);
1181} 2140}
1182 2141
1183void 2142void
1184ev_check_start (EV_P_ struct ev_check *w) 2143ev_check_start (EV_P_ ev_check *w)
1185{ 2144{
1186 if (ev_is_active (w)) 2145 if (expect_false (ev_is_active (w)))
1187 return; 2146 return;
1188 2147
1189 ev_start (EV_A_ (W)w, ++checkcnt); 2148 ev_start (EV_A_ (W)w, ++checkcnt);
1190 array_needsize (checks, checkmax, checkcnt, ); 2149 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
1191 checks [checkcnt - 1] = w; 2150 checks [checkcnt - 1] = w;
1192} 2151}
1193 2152
1194void 2153void
1195ev_check_stop (EV_P_ struct ev_check *w) 2154ev_check_stop (EV_P_ ev_check *w)
1196{ 2155{
1197 ev_clear_pending (EV_A_ (W)w); 2156 clear_pending (EV_A_ (W)w);
1198 if (ev_is_active (w)) 2157 if (expect_false (!ev_is_active (w)))
1199 return; 2158 return;
1200 2159
2160 {
2161 int active = ((W)w)->active;
1201 checks [w->active - 1] = checks [--checkcnt]; 2162 checks [active - 1] = checks [--checkcnt];
2163 ((W)checks [active - 1])->active = active;
2164 }
2165
1202 ev_stop (EV_A_ (W)w); 2166 ev_stop (EV_A_ (W)w);
1203} 2167}
1204 2168
1205void 2169#if EV_EMBED_ENABLE
1206ev_child_start (EV_P_ struct ev_child *w) 2170void noinline
2171ev_embed_sweep (EV_P_ ev_embed *w)
1207{ 2172{
2173 ev_loop (w->loop, EVLOOP_NONBLOCK);
2174}
2175
2176static void
2177embed_cb (EV_P_ ev_io *io, int revents)
2178{
2179 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2180
1208 if (ev_is_active (w)) 2181 if (ev_cb (w))
2182 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2183 else
2184 ev_embed_sweep (loop, w);
2185}
2186
2187void
2188ev_embed_start (EV_P_ ev_embed *w)
2189{
2190 if (expect_false (ev_is_active (w)))
1209 return; 2191 return;
2192
2193 {
2194 struct ev_loop *loop = w->loop;
2195 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2196 ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
2197 }
2198
2199 ev_set_priority (&w->io, ev_priority (w));
2200 ev_io_start (EV_A_ &w->io);
1210 2201
1211 ev_start (EV_A_ (W)w, 1); 2202 ev_start (EV_A_ (W)w, 1);
1212 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1213} 2203}
1214 2204
1215void 2205void
1216ev_child_stop (EV_P_ struct ev_child *w) 2206ev_embed_stop (EV_P_ ev_embed *w)
1217{ 2207{
1218 ev_clear_pending (EV_A_ (W)w); 2208 clear_pending (EV_A_ (W)w);
1219 if (ev_is_active (w)) 2209 if (expect_false (!ev_is_active (w)))
1220 return; 2210 return;
1221 2211
1222 wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 2212 ev_io_stop (EV_A_ &w->io);
2213
1223 ev_stop (EV_A_ (W)w); 2214 ev_stop (EV_A_ (W)w);
1224} 2215}
2216#endif
2217
2218#if EV_FORK_ENABLE
2219void
2220ev_fork_start (EV_P_ ev_fork *w)
2221{
2222 if (expect_false (ev_is_active (w)))
2223 return;
2224
2225 ev_start (EV_A_ (W)w, ++forkcnt);
2226 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2227 forks [forkcnt - 1] = w;
2228}
2229
2230void
2231ev_fork_stop (EV_P_ ev_fork *w)
2232{
2233 clear_pending (EV_A_ (W)w);
2234 if (expect_false (!ev_is_active (w)))
2235 return;
2236
2237 {
2238 int active = ((W)w)->active;
2239 forks [active - 1] = forks [--forkcnt];
2240 ((W)forks [active - 1])->active = active;
2241 }
2242
2243 ev_stop (EV_A_ (W)w);
2244}
2245#endif
1225 2246
1226/*****************************************************************************/ 2247/*****************************************************************************/
1227 2248
1228struct ev_once 2249struct ev_once
1229{ 2250{
1230 struct ev_io io; 2251 ev_io io;
1231 struct ev_timer to; 2252 ev_timer to;
1232 void (*cb)(int revents, void *arg); 2253 void (*cb)(int revents, void *arg);
1233 void *arg; 2254 void *arg;
1234}; 2255};
1235 2256
1236static void 2257static void
… …
1239 void (*cb)(int revents, void *arg) = once->cb; 2260 void (*cb)(int revents, void *arg) = once->cb;
1240 void *arg = once->arg; 2261 void *arg = once->arg;
1241 2262
1242 ev_io_stop (EV_A_ &once->io); 2263 ev_io_stop (EV_A_ &once->io);
1243 ev_timer_stop (EV_A_ &once->to); 2264 ev_timer_stop (EV_A_ &once->to);
1244 free (once); 2265 ev_free (once);
1245 2266
1246 cb (revents, arg); 2267 cb (revents, arg);
1247} 2268}
1248 2269
1249static void 2270static void
1250once_cb_io (EV_P_ struct ev_io *w, int revents) 2271once_cb_io (EV_P_ ev_io *w, int revents)
1251{ 2272{
1252 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 2273 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1253} 2274}
1254 2275
1255static void 2276static void
1256once_cb_to (EV_P_ struct ev_timer *w, int revents) 2277once_cb_to (EV_P_ ev_timer *w, int revents)
1257{ 2278{
1258 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 2279 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1259} 2280}
1260 2281
1261void 2282void
1262ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 2283ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1263{ 2284{
1264 struct ev_once *once = malloc (sizeof (struct ev_once)); 2285 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1265 2286
1266 if (!once) 2287 if (expect_false (!once))
2288 {
1267 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 2289 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1268 else 2290 return;
1269 { 2291 }
2292
1270 once->cb = cb; 2293 once->cb = cb;
1271 once->arg = arg; 2294 once->arg = arg;
1272 2295
1273 ev_watcher_init (&once->io, once_cb_io); 2296 ev_init (&once->io, once_cb_io);
1274 if (fd >= 0) 2297 if (fd >= 0)
1275 { 2298 {
1276 ev_io_set (&once->io, fd, events); 2299 ev_io_set (&once->io, fd, events);
1277 ev_io_start (EV_A_ &once->io); 2300 ev_io_start (EV_A_ &once->io);
1278 } 2301 }
1279 2302
1280 ev_watcher_init (&once->to, once_cb_to); 2303 ev_init (&once->to, once_cb_to);
1281 if (timeout >= 0.) 2304 if (timeout >= 0.)
1282 { 2305 {
1283 ev_timer_set (&once->to, timeout, 0.); 2306 ev_timer_set (&once->to, timeout, 0.);
1284 ev_timer_start (EV_A_ &once->to); 2307 ev_timer_start (EV_A_ &once->to);
1285 }
1286 }
1287}
1288
1289/*****************************************************************************/
1290
1291#if 0
1292
1293struct ev_io wio;
1294
1295static void
1296sin_cb (struct ev_io *w, int revents)
1297{
1298 fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);
1299}
1300
1301static void
1302ocb (struct ev_timer *w, int revents)
1303{
1304 //fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);
1305 ev_timer_stop (w);
1306 ev_timer_start (w);
1307}
1308
1309static void
1310scb (struct ev_signal *w, int revents)
1311{
1312 fprintf (stderr, "signal %x,%d\n", revents, w->signum);
1313 ev_io_stop (&wio);
1314 ev_io_start (&wio);
1315}
1316
1317static void
1318gcb (struct ev_signal *w, int revents)
1319{
1320 fprintf (stderr, "generic %x\n", revents);
1321
1322}
1323
1324int main (void)
1325{
1326 ev_init (0);
1327
1328 ev_io_init (&wio, sin_cb, 0, EV_READ);
1329 ev_io_start (&wio);
1330
1331 struct ev_timer t[10000];
1332
1333#if 0
1334 int i;
1335 for (i = 0; i < 10000; ++i)
1336 { 2308 }
1337 struct ev_timer *w = t + i;
1338 ev_watcher_init (w, ocb, i);
1339 ev_timer_init_abs (w, ocb, drand48 (), 0.99775533);
1340 ev_timer_start (w);
1341 if (drand48 () < 0.5)
1342 ev_timer_stop (w);
1343 }
1344#endif
1345
1346 struct ev_timer t1;
1347 ev_timer_init (&t1, ocb, 5, 10);
1348 ev_timer_start (&t1);
1349
1350 struct ev_signal sig;
1351 ev_signal_init (&sig, scb, SIGQUIT);
1352 ev_signal_start (&sig);
1353
1354 struct ev_check cw;
1355 ev_check_init (&cw, gcb);
1356 ev_check_start (&cw);
1357
1358 struct ev_idle iw;
1359 ev_idle_init (&iw, gcb);
1360 ev_idle_start (&iw);
1361
1362 ev_loop (0);
1363
1364 return 0;
1365} 2309}
1366 2310
2311#ifdef __cplusplus
2312}
1367#endif 2313#endif
1368 2314
1369
1370
1371

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