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Comparing libev/ev.c (file contents):
Revision 1.57 by root, Sun Nov 4 16:43:53 2007 UTC vs.
Revision 1.183 by root, Wed Dec 12 05:11:56 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 int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 266static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
119 267
268#ifdef _WIN32
269# include "ev_win32.c"
270#endif
271
120/*****************************************************************************/ 272/*****************************************************************************/
121 273
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
122typedef struct 324typedef struct
123{ 325{
124 struct ev_watcher_list *head; 326 WL head;
125 unsigned char events; 327 unsigned char events;
126 unsigned char reify; 328 unsigned char reify;
329#if EV_SELECT_IS_WINSOCKET
330 SOCKET handle;
331#endif
127} ANFD; 332} ANFD;
128 333
129typedef struct 334typedef struct
130{ 335{
131 W w; 336 W w;
132 int events; 337 int events;
133} ANPENDING; 338} ANPENDING;
134 339
340#if EV_USE_INOTIFY
341typedef struct
342{
343 WL head;
344} ANFS;
345#endif
346
135#if EV_MULTIPLICITY 347#if EV_MULTIPLICITY
136 348
137struct ev_loop 349 struct ev_loop
138{ 350 {
351 ev_tstamp ev_rt_now;
352 #define ev_rt_now ((loop)->ev_rt_now)
139# define VAR(name,decl) decl; 353 #define VAR(name,decl) decl;
140# include "ev_vars.h" 354 #include "ev_vars.h"
141};
142# undef VAR 355 #undef VAR
356 };
143# include "ev_wrap.h" 357 #include "ev_wrap.h"
358
359 static struct ev_loop default_loop_struct;
360 struct ev_loop *ev_default_loop_ptr;
144 361
145#else 362#else
146 363
364 ev_tstamp ev_rt_now;
147# define VAR(name,decl) static decl; 365 #define VAR(name,decl) static decl;
148# include "ev_vars.h" 366 #include "ev_vars.h"
149# undef VAR 367 #undef VAR
368
369 static int ev_default_loop_ptr;
150 370
151#endif 371#endif
152 372
153/*****************************************************************************/ 373/*****************************************************************************/
154 374
155inline ev_tstamp 375ev_tstamp
156ev_time (void) 376ev_time (void)
157{ 377{
158#if EV_USE_REALTIME 378#if EV_USE_REALTIME
159 struct timespec ts; 379 struct timespec ts;
160 clock_gettime (CLOCK_REALTIME, &ts); 380 clock_gettime (CLOCK_REALTIME, &ts);
… …
164 gettimeofday (&tv, 0); 384 gettimeofday (&tv, 0);
165 return tv.tv_sec + tv.tv_usec * 1e-6; 385 return tv.tv_sec + tv.tv_usec * 1e-6;
166#endif 386#endif
167} 387}
168 388
169inline ev_tstamp 389ev_tstamp inline_size
170get_clock (void) 390get_clock (void)
171{ 391{
172#if EV_USE_MONOTONIC 392#if EV_USE_MONOTONIC
173 if (expect_true (have_monotonic)) 393 if (expect_true (have_monotonic))
174 { 394 {
… …
179#endif 399#endif
180 400
181 return ev_time (); 401 return ev_time ();
182} 402}
183 403
404#if EV_MULTIPLICITY
184ev_tstamp 405ev_tstamp
185ev_now (EV_P) 406ev_now (EV_P)
186{ 407{
187 return rt_now; 408 return ev_rt_now;
188} 409}
410#endif
189 411
190#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;
191 416
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
192#define array_needsize(base,cur,cnt,init) \ 440#define array_needsize(type,base,cur,cnt,init) \
193 if (expect_false ((cnt) > cur)) \ 441 if (expect_false ((cnt) > (cur))) \
194 { \ 442 { \
195 int newcnt = cur; \ 443 int ocur_ = (cur); \
196 do \ 444 (base) = (type *)array_realloc \
197 { \ 445 (sizeof (type), (base), &(cur), (cnt)); \
198 newcnt = array_roundsize (base, newcnt << 1); \ 446 init ((base) + (ocur_), (cur) - ocur_); \
199 } \ 447 }
200 while ((cnt) > newcnt); \ 448
449#if 0
450#define array_slim(type,stem) \
451 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
201 \ 452 { \
202 base = realloc (base, sizeof (*base) * (newcnt)); \ 453 stem ## max = array_roundsize (stem ## cnt >> 1); \
203 init (base + cur, newcnt - cur); \ 454 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
204 cur = newcnt; \ 455 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
205 } 456 }
457#endif
458
459#define array_free(stem, idx) \
460 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
206 461
207/*****************************************************************************/ 462/*****************************************************************************/
208 463
209static void 464void noinline
465ev_feed_event (EV_P_ void *w, int revents)
466{
467 W w_ = (W)w;
468 int pri = ABSPRI (w_);
469
470 if (expect_false (w_->pending))
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}
480
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
210anfds_init (ANFD *base, int count) 493anfds_init (ANFD *base, int count)
211{ 494{
212 while (count--) 495 while (count--)
213 { 496 {
214 base->head = 0; 497 base->head = 0;
… …
217 500
218 ++base; 501 ++base;
219 } 502 }
220} 503}
221 504
222static void 505void inline_speed
223event (EV_P_ W w, int events)
224{
225 if (w->pending)
226 {
227 pendings [ABSPRI (w)][w->pending - 1].events |= events;
228 return;
229 }
230
231 w->pending = ++pendingcnt [ABSPRI (w)];
232 array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], );
233 pendings [ABSPRI (w)][w->pending - 1].w = w;
234 pendings [ABSPRI (w)][w->pending - 1].events = events;
235}
236
237static void
238queue_events (EV_P_ W *events, int eventcnt, int type)
239{
240 int i;
241
242 for (i = 0; i < eventcnt; ++i)
243 event (EV_A_ events [i], type);
244}
245
246static void
247fd_event (EV_P_ int fd, int events) 506fd_event (EV_P_ int fd, int revents)
248{ 507{
249 ANFD *anfd = anfds + fd; 508 ANFD *anfd = anfds + fd;
250 struct ev_io *w; 509 ev_io *w;
251 510
252 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)
253 { 512 {
254 int ev = w->events & events; 513 int ev = w->events & revents;
255 514
256 if (ev) 515 if (ev)
257 event (EV_A_ (W)w, ev); 516 ev_feed_event (EV_A_ (W)w, ev);
258 } 517 }
259} 518}
260 519
261/*****************************************************************************/ 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}
262 526
263static void 527void inline_size
264fd_reify (EV_P) 528fd_reify (EV_P)
265{ 529{
266 int i; 530 int i;
267 531
268 for (i = 0; i < fdchangecnt; ++i) 532 for (i = 0; i < fdchangecnt; ++i)
269 { 533 {
270 int fd = fdchanges [i]; 534 int fd = fdchanges [i];
271 ANFD *anfd = anfds + fd; 535 ANFD *anfd = anfds + fd;
272 struct ev_io *w; 536 ev_io *w;
273 537
274 int events = 0; 538 int events = 0;
275 539
276 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)
277 events |= w->events; 541 events |= w->events;
278 542
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
279 anfd->reify = 0; 552 anfd->reify = 0;
280 553
281 if (anfd->events != events)
282 {
283 method_modify (EV_A_ fd, anfd->events, events); 554 backend_modify (EV_A_ fd, anfd->events, events);
284 anfd->events = events; 555 anfd->events = events;
285 }
286 } 556 }
287 557
288 fdchangecnt = 0; 558 fdchangecnt = 0;
289} 559}
290 560
291static void 561void inline_size
292fd_change (EV_P_ int fd) 562fd_change (EV_P_ int fd, int flags)
293{ 563{
294 if (anfds [fd].reify || fdchangecnt < 0) 564 unsigned char reify = anfds [fd].reify;
295 return;
296
297 anfds [fd].reify = 1; 565 anfds [fd].reify |= flags | 1;
298 566
567 if (expect_true (!reify))
568 {
299 ++fdchangecnt; 569 ++fdchangecnt;
300 array_needsize (fdchanges, fdchangemax, fdchangecnt, ); 570 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
301 fdchanges [fdchangecnt - 1] = fd; 571 fdchanges [fdchangecnt - 1] = fd;
572 }
302} 573}
303 574
304static void 575void inline_speed
305fd_kill (EV_P_ int fd) 576fd_kill (EV_P_ int fd)
306{ 577{
307 struct ev_io *w; 578 ev_io *w;
308 579
309 while ((w = (struct ev_io *)anfds [fd].head)) 580 while ((w = (ev_io *)anfds [fd].head))
310 { 581 {
311 ev_io_stop (EV_A_ w); 582 ev_io_stop (EV_A_ w);
312 event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 583 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
313 } 584 }
585}
586
587int inline_size
588fd_valid (int fd)
589{
590#ifdef _WIN32
591 return _get_osfhandle (fd) != -1;
592#else
593 return fcntl (fd, F_GETFD) != -1;
594#endif
314} 595}
315 596
316/* called on EBADF to verify fds */ 597/* called on EBADF to verify fds */
317static void 598static void noinline
318fd_ebadf (EV_P) 599fd_ebadf (EV_P)
319{ 600{
320 int fd; 601 int fd;
321 602
322 for (fd = 0; fd < anfdmax; ++fd) 603 for (fd = 0; fd < anfdmax; ++fd)
323 if (anfds [fd].events) 604 if (anfds [fd].events)
324 if (fcntl (fd, F_GETFD) == -1 && errno == EBADF) 605 if (!fd_valid (fd) == -1 && errno == EBADF)
325 fd_kill (EV_A_ fd); 606 fd_kill (EV_A_ fd);
326} 607}
327 608
328/* called on ENOMEM in select/poll to kill some fds and retry */ 609/* called on ENOMEM in select/poll to kill some fds and retry */
329static void 610static void noinline
330fd_enomem (EV_P) 611fd_enomem (EV_P)
331{ 612{
332 int fd = anfdmax; 613 int fd;
333 614
334 while (fd--) 615 for (fd = anfdmax; fd--; )
335 if (anfds [fd].events) 616 if (anfds [fd].events)
336 { 617 {
337 close (fd);
338 fd_kill (EV_A_ fd); 618 fd_kill (EV_A_ fd);
339 return; 619 return;
340 } 620 }
341} 621}
342 622
343/* susually called after fork if method needs to re-arm all fds from scratch */ 623/* usually called after fork if backend needs to re-arm all fds from scratch */
344static void 624static void noinline
345fd_rearm_all (EV_P) 625fd_rearm_all (EV_P)
346{ 626{
347 int fd; 627 int fd;
348 628
349 /* this should be highly optimised to not do anything but set a flag */
350 for (fd = 0; fd < anfdmax; ++fd) 629 for (fd = 0; fd < anfdmax; ++fd)
351 if (anfds [fd].events) 630 if (anfds [fd].events)
352 { 631 {
353 anfds [fd].events = 0; 632 anfds [fd].events = 0;
354 fd_change (fd); 633 fd_change (EV_A_ fd, EV_IOFDSET);
355 } 634 }
356} 635}
357 636
358/*****************************************************************************/ 637/*****************************************************************************/
359 638
360static void 639void inline_speed
361upheap (WT *heap, int k) 640upheap (WT *heap, int k)
362{ 641{
363 WT w = heap [k]; 642 WT w = heap [k];
364 643
365 while (k && heap [k >> 1]->at > w->at) 644 while (k)
366 { 645 {
646 int p = (k - 1) >> 1;
647
648 if (heap [p]->at <= w->at)
649 break;
650
367 heap [k] = heap [k >> 1]; 651 heap [k] = heap [p];
368 heap [k]->active = k + 1; 652 ((W)heap [k])->active = k + 1;
369 k >>= 1; 653 k = p;
370 } 654 }
371 655
372 heap [k] = w; 656 heap [k] = w;
373 heap [k]->active = k + 1; 657 ((W)heap [k])->active = k + 1;
374
375} 658}
376 659
377static void 660void inline_speed
378downheap (WT *heap, int N, int k) 661downheap (WT *heap, int N, int k)
379{ 662{
380 WT w = heap [k]; 663 WT w = heap [k];
381 664
382 while (k < (N >> 1)) 665 for (;;)
383 { 666 {
384 int j = k << 1; 667 int c = (k << 1) + 1;
385 668
386 if (j + 1 < N && heap [j]->at > heap [j + 1]->at) 669 if (c >= N)
387 ++j;
388
389 if (w->at <= heap [j]->at)
390 break; 670 break;
391 671
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
392 heap [k] = heap [j]; 678 heap [k] = heap [c];
393 heap [k]->active = k + 1; 679 ((W)heap [k])->active = k + 1;
680
394 k = j; 681 k = c;
395 } 682 }
396 683
397 heap [k] = w; 684 heap [k] = w;
398 heap [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);
399} 693}
400 694
401/*****************************************************************************/ 695/*****************************************************************************/
402 696
403typedef struct 697typedef struct
404{ 698{
405 struct ev_watcher_list *head; 699 WL head;
406 sig_atomic_t volatile gotsig; 700 sig_atomic_t volatile gotsig;
407} ANSIG; 701} ANSIG;
408 702
409static ANSIG *signals; 703static ANSIG *signals;
410static int signalmax; 704static int signalmax;
411 705
412static int sigpipe [2]; 706static int sigpipe [2];
413static sig_atomic_t volatile gotsig; 707static sig_atomic_t volatile gotsig;
708static ev_io sigev;
414 709
415static void 710void inline_size
416signals_init (ANSIG *base, int count) 711signals_init (ANSIG *base, int count)
417{ 712{
418 while (count--) 713 while (count--)
419 { 714 {
420 base->head = 0; 715 base->head = 0;
… …
425} 720}
426 721
427static void 722static void
428sighandler (int signum) 723sighandler (int signum)
429{ 724{
725#if _WIN32
726 signal (signum, sighandler);
727#endif
728
430 signals [signum - 1].gotsig = 1; 729 signals [signum - 1].gotsig = 1;
431 730
432 if (!gotsig) 731 if (!gotsig)
433 { 732 {
434 int old_errno = errno; 733 int old_errno = errno;
… …
436 write (sigpipe [1], &signum, 1); 735 write (sigpipe [1], &signum, 1);
437 errno = old_errno; 736 errno = old_errno;
438 } 737 }
439} 738}
440 739
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
441static void 760static void
442sigcb (EV_P_ struct ev_io *iow, int revents) 761sigcb (EV_P_ ev_io *iow, int revents)
443{ 762{
444 struct ev_watcher_list *w;
445 int signum; 763 int signum;
446 764
447 read (sigpipe [0], &revents, 1); 765 read (sigpipe [0], &revents, 1);
448 gotsig = 0; 766 gotsig = 0;
449 767
450 for (signum = signalmax; signum--; ) 768 for (signum = signalmax; signum--; )
451 if (signals [signum].gotsig) 769 if (signals [signum].gotsig)
452 { 770 ev_feed_signal_event (EV_A_ signum + 1);
453 signals [signum].gotsig = 0;
454
455 for (w = signals [signum].head; w; w = w->next)
456 event (EV_A_ (W)w, EV_SIGNAL);
457 }
458} 771}
459 772
460static void 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
461siginit (EV_P) 786siginit (EV_P)
462{ 787{
463#ifndef WIN32 788 fd_intern (sigpipe [0]);
464 fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC); 789 fd_intern (sigpipe [1]);
465 fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
466
467 /* rather than sort out wether we really need nb, set it */
468 fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
469 fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
470#endif
471 790
472 ev_io_set (&sigev, sigpipe [0], EV_READ); 791 ev_io_set (&sigev, sigpipe [0], EV_READ);
473 ev_io_start (EV_A_ &sigev); 792 ev_io_start (EV_A_ &sigev);
474 ev_unref (EV_A); /* child watcher should not keep loop alive */ 793 ev_unref (EV_A); /* child watcher should not keep loop alive */
475} 794}
476 795
477/*****************************************************************************/ 796/*****************************************************************************/
478 797
798static WL childs [EV_PID_HASHSIZE];
799
479#ifndef WIN32 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)
811 {
812 ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */
813 w->rpid = pid;
814 w->rstatus = status;
815 ev_feed_event (EV_A_ (W)w, EV_CHILD);
816 }
817}
480 818
481#ifndef WCONTINUED 819#ifndef WCONTINUED
482# define WCONTINUED 0 820# define WCONTINUED 0
483#endif 821#endif
484 822
485static void 823static void
486child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
487{
488 struct ev_child *w;
489
490 for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
491 if (w->pid == pid || !w->pid)
492 {
493 w->priority = sw->priority; /* need to do it *now* */
494 w->rpid = pid;
495 w->rstatus = status;
496 event (EV_A_ (W)w, EV_CHILD);
497 }
498}
499
500static void
501childcb (EV_P_ struct ev_signal *sw, int revents) 824childcb (EV_P_ ev_signal *sw, int revents)
502{ 825{
503 int pid, status; 826 int pid, status;
504 827
828 /* some systems define WCONTINUED but then fail to support it (linux 2.4) */
505 if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) 829 if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
506 { 830 if (!WCONTINUED
831 || errno != EINVAL
832 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
833 return;
834
507 /* 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 */
508 event (EV_A_ (W)sw, EV_SIGNAL); 837 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
509 838
510 child_reap (EV_A_ sw, pid, pid, status); 839 child_reap (EV_A_ sw, pid, pid, status);
840 if (EV_PID_HASHSIZE > 1)
511 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 */
512 }
513} 842}
514 843
515#endif 844#endif
516 845
517/*****************************************************************************/ 846/*****************************************************************************/
518 847
848#if EV_USE_PORT
849# include "ev_port.c"
850#endif
519#if EV_USE_KQUEUE 851#if EV_USE_KQUEUE
520# include "ev_kqueue.c" 852# include "ev_kqueue.c"
521#endif 853#endif
522#if EV_USE_EPOLL 854#if EV_USE_EPOLL
523# include "ev_epoll.c" 855# include "ev_epoll.c"
524#endif 856#endif
525#if EV_USEV_POLL 857#if EV_USE_POLL
526# include "ev_poll.c" 858# include "ev_poll.c"
527#endif 859#endif
528#if EV_USE_SELECT 860#if EV_USE_SELECT
529# include "ev_select.c" 861# include "ev_select.c"
530#endif 862#endif
… …
540{ 872{
541 return EV_VERSION_MINOR; 873 return EV_VERSION_MINOR;
542} 874}
543 875
544/* 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 */
545static int 877int inline_size
546enable_secure (void) 878enable_secure (void)
547{ 879{
548#ifdef WIN32 880#ifdef _WIN32
549 return 0; 881 return 0;
550#else 882#else
551 return getuid () != geteuid () 883 return getuid () != geteuid ()
552 || getgid () != getegid (); 884 || getgid () != getegid ();
553#endif 885#endif
554} 886}
555 887
556int 888unsigned int
557ev_method (EV_P) 889ev_supported_backends (void)
558{ 890{
559 return method; 891 unsigned int flags = 0;
560}
561 892
562static void 893 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
563loop_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)
564{ 904{
565 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)
566 { 944 {
567#if EV_USE_MONOTONIC 945#if EV_USE_MONOTONIC
568 { 946 {
569 struct timespec ts; 947 struct timespec ts;
570 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 948 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
571 have_monotonic = 1; 949 have_monotonic = 1;
572 } 950 }
573#endif 951#endif
574 952
575 rt_now = ev_time (); 953 ev_rt_now = ev_time ();
576 mn_now = get_clock (); 954 mn_now = get_clock ();
577 now_floor = mn_now; 955 now_floor = mn_now;
578 rtmn_diff = rt_now - mn_now; 956 rtmn_diff = ev_rt_now - mn_now;
579 957
580 if (methods == EVMETHOD_AUTO) 958 /* pid check not overridable via env */
581 if (!enable_secure () && getenv ("LIBEV_METHODS")) 959#ifndef _WIN32
960 if (flags & EVFLAG_FORKCHECK)
961 curpid = getpid ();
962#endif
963
964 if (!(flags & EVFLAG_NOENV)
965 && !enable_secure ()
966 && getenv ("LIBEV_FLAGS"))
582 methods = atoi (getenv ("LIBEV_METHODS")); 967 flags = atoi (getenv ("LIBEV_FLAGS"));
583 else
584 methods = EVMETHOD_ANY;
585 968
586 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
587#if EV_USE_KQUEUE 981#if EV_USE_KQUEUE
588 if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods); 982 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
589#endif 983#endif
590#if EV_USE_EPOLL 984#if EV_USE_EPOLL
591 if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods); 985 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
592#endif 986#endif
593#if EV_USEV_POLL 987#if EV_USE_POLL
594 if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods); 988 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
595#endif 989#endif
596#if EV_USE_SELECT 990#if EV_USE_SELECT
597 if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods); 991 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
598#endif 992#endif
599 }
600}
601 993
602void 994 ev_init (&sigev, sigcb);
995 ev_set_priority (&sigev, EV_MAXPRI);
996 }
997}
998
999static void noinline
603loop_destroy (EV_P) 1000loop_destroy (EV_P)
604{ 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
605#if EV_USE_KQUEUE 1015#if EV_USE_KQUEUE
606 if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A); 1016 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
607#endif 1017#endif
608#if EV_USE_EPOLL 1018#if EV_USE_EPOLL
609 if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A); 1019 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
610#endif 1020#endif
611#if EV_USEV_POLL 1021#if EV_USE_POLL
612 if (method == EVMETHOD_POLL ) poll_destroy (EV_A); 1022 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
613#endif 1023#endif
614#if EV_USE_SELECT 1024#if EV_USE_SELECT
615 if (method == EVMETHOD_SELECT) select_destroy (EV_A); 1025 if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
616#endif 1026#endif
617 1027
618 method = 0; 1028 for (i = NUMPRI; i--; )
619 /*TODO*/ 1029 {
620} 1030 array_free (pending, [i]);
1031#if EV_IDLE_ENABLE
1032 array_free (idle, [i]);
1033#endif
1034 }
621 1035
622void 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
623loop_fork (EV_P) 1051loop_fork (EV_P)
624{ 1052{
625 /*TODO*/ 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
626#if EV_USE_EPOLL 1059#if EV_USE_EPOLL
627 if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A); 1060 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
628#endif 1061#endif
629#if EV_USE_KQUEUE 1062#if EV_USE_INOTIFY
630 if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A); 1063 infy_fork (EV_A);
631#endif 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;
632} 1082}
633 1083
634#if EV_MULTIPLICITY 1084#if EV_MULTIPLICITY
635struct ev_loop * 1085struct ev_loop *
636ev_loop_new (int methods) 1086ev_loop_new (unsigned int flags)
637{ 1087{
638 struct ev_loop *loop = (struct ev_loop *)calloc (1, sizeof (struct ev_loop)); 1088 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
639 1089
1090 memset (loop, 0, sizeof (struct ev_loop));
1091
640 loop_init (EV_A_ methods); 1092 loop_init (EV_A_ flags);
641 1093
642 if (ev_methods (EV_A)) 1094 if (ev_backend (EV_A))
643 return loop; 1095 return loop;
644 1096
645 return 0; 1097 return 0;
646} 1098}
647 1099
648void 1100void
649ev_loop_destroy (EV_P) 1101ev_loop_destroy (EV_P)
650{ 1102{
651 loop_destroy (EV_A); 1103 loop_destroy (EV_A);
652 free (loop); 1104 ev_free (loop);
653} 1105}
654 1106
655void 1107void
656ev_loop_fork (EV_P) 1108ev_loop_fork (EV_P)
657{ 1109{
658 loop_fork (EV_A); 1110 postfork = 1;
659} 1111}
660 1112
661#endif 1113#endif
662 1114
663#if EV_MULTIPLICITY 1115#if EV_MULTIPLICITY
664struct ev_loop default_loop_struct;
665static struct ev_loop *default_loop;
666
667struct ev_loop * 1116struct ev_loop *
1117ev_default_loop_init (unsigned int flags)
668#else 1118#else
669static int default_loop;
670
671int 1119int
1120ev_default_loop (unsigned int flags)
672#endif 1121#endif
673ev_default_loop (int methods)
674{ 1122{
675 if (sigpipe [0] == sigpipe [1]) 1123 if (sigpipe [0] == sigpipe [1])
676 if (pipe (sigpipe)) 1124 if (pipe (sigpipe))
677 return 0; 1125 return 0;
678 1126
679 if (!default_loop) 1127 if (!ev_default_loop_ptr)
680 { 1128 {
681#if EV_MULTIPLICITY 1129#if EV_MULTIPLICITY
682 struct ev_loop *loop = default_loop = &default_loop_struct; 1130 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
683#else 1131#else
684 default_loop = 1; 1132 ev_default_loop_ptr = 1;
685#endif 1133#endif
686 1134
687 loop_init (EV_A_ methods); 1135 loop_init (EV_A_ flags);
688 1136
689 if (ev_method (EV_A)) 1137 if (ev_backend (EV_A))
690 { 1138 {
691 ev_watcher_init (&sigev, sigcb);
692 ev_set_priority (&sigev, EV_MAXPRI);
693 siginit (EV_A); 1139 siginit (EV_A);
694 1140
695#ifndef WIN32 1141#ifndef _WIN32
696 ev_signal_init (&childev, childcb, SIGCHLD); 1142 ev_signal_init (&childev, childcb, SIGCHLD);
697 ev_set_priority (&childev, EV_MAXPRI); 1143 ev_set_priority (&childev, EV_MAXPRI);
698 ev_signal_start (EV_A_ &childev); 1144 ev_signal_start (EV_A_ &childev);
699 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1145 ev_unref (EV_A); /* child watcher should not keep loop alive */
700#endif 1146#endif
701 } 1147 }
702 else 1148 else
703 default_loop = 0; 1149 ev_default_loop_ptr = 0;
704 } 1150 }
705 1151
706 return default_loop; 1152 return ev_default_loop_ptr;
707} 1153}
708 1154
709void 1155void
710ev_default_destroy (void) 1156ev_default_destroy (void)
711{ 1157{
712#if EV_MULTIPLICITY 1158#if EV_MULTIPLICITY
713 struct ev_loop *loop = default_loop; 1159 struct ev_loop *loop = ev_default_loop_ptr;
714#endif 1160#endif
715 1161
1162#ifndef _WIN32
716 ev_ref (EV_A); /* child watcher */ 1163 ev_ref (EV_A); /* child watcher */
717 ev_signal_stop (EV_A_ &childev); 1164 ev_signal_stop (EV_A_ &childev);
1165#endif
718 1166
719 ev_ref (EV_A); /* signal watcher */ 1167 ev_ref (EV_A); /* signal watcher */
720 ev_io_stop (EV_A_ &sigev); 1168 ev_io_stop (EV_A_ &sigev);
721 1169
722 close (sigpipe [0]); sigpipe [0] = 0; 1170 close (sigpipe [0]); sigpipe [0] = 0;
… …
724 1172
725 loop_destroy (EV_A); 1173 loop_destroy (EV_A);
726} 1174}
727 1175
728void 1176void
729ev_default_fork (EV_P) 1177ev_default_fork (void)
730{ 1178{
731 loop_fork (EV_A); 1179#if EV_MULTIPLICITY
1180 struct ev_loop *loop = ev_default_loop_ptr;
1181#endif
732 1182
733 ev_io_stop (EV_A_ &sigev); 1183 if (backend)
734 close (sigpipe [0]); 1184 postfork = 1;
735 close (sigpipe [1]);
736 pipe (sigpipe);
737
738 ev_ref (EV_A); /* signal watcher */
739 siginit (EV_A);
740} 1185}
741 1186
742/*****************************************************************************/ 1187/*****************************************************************************/
743 1188
744static void 1189void
1190ev_invoke (EV_P_ void *w, int revents)
1191{
1192 EV_CB_INVOKE ((W)w, revents);
1193}
1194
1195void inline_speed
745call_pending (EV_P) 1196call_pending (EV_P)
746{ 1197{
747 int pri; 1198 int pri;
748 1199
749 for (pri = NUMPRI; pri--; ) 1200 for (pri = NUMPRI; pri--; )
750 while (pendingcnt [pri]) 1201 while (pendingcnt [pri])
751 { 1202 {
752 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 1203 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
753 1204
754 if (p->w) 1205 if (expect_true (p->w))
755 { 1206 {
1207 /*assert (("non-pending watcher on pending list", p->w->pending));*/
1208
756 p->w->pending = 0; 1209 p->w->pending = 0;
757 p->w->cb (EV_A_ p->w, p->events); 1210 EV_CB_INVOKE (p->w, p->events);
758 } 1211 }
759 } 1212 }
760} 1213}
761 1214
762static void 1215void inline_size
763timers_reify (EV_P) 1216timers_reify (EV_P)
764{ 1217{
765 while (timercnt && timers [0]->at <= mn_now) 1218 while (timercnt && ((WT)timers [0])->at <= mn_now)
766 { 1219 {
767 struct ev_timer *w = timers [0]; 1220 ev_timer *w = (ev_timer *)timers [0];
1221
1222 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
768 1223
769 /* first reschedule or stop timer */ 1224 /* first reschedule or stop timer */
770 if (w->repeat) 1225 if (w->repeat)
771 { 1226 {
772 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
773 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
774 downheap ((WT *)timers, timercnt, 0); 1233 downheap (timers, timercnt, 0);
775 } 1234 }
776 else 1235 else
777 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ 1236 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
778 1237
779 event (EV_A_ (W)w, EV_TIMEOUT); 1238 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
780 } 1239 }
781} 1240}
782 1241
783static void 1242#if EV_PERIODIC_ENABLE
1243void inline_size
784periodics_reify (EV_P) 1244periodics_reify (EV_P)
785{ 1245{
786 while (periodiccnt && periodics [0]->at <= rt_now) 1246 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
787 { 1247 {
788 struct ev_periodic *w = periodics [0]; 1248 ev_periodic *w = (ev_periodic *)periodics [0];
1249
1250 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
789 1251
790 /* first reschedule or stop timer */ 1252 /* first reschedule or stop timer */
791 if (w->interval) 1253 if (w->reschedule_cb)
792 { 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 (periodics, periodiccnt, 0);
1258 }
1259 else if (w->interval)
1260 {
793 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;
794 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));
795 downheap ((WT *)periodics, periodiccnt, 0); 1264 downheap (periodics, periodiccnt, 0);
796 } 1265 }
797 else 1266 else
798 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 1267 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
799 1268
800 event (EV_A_ (W)w, EV_PERIODIC); 1269 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
801 } 1270 }
802} 1271}
803 1272
804static void 1273static void noinline
805periodics_reschedule (EV_P) 1274periodics_reschedule (EV_P)
806{ 1275{
807 int i; 1276 int i;
808 1277
809 /* adjust periodics after time jump */ 1278 /* adjust periodics after time jump */
810 for (i = 0; i < periodiccnt; ++i) 1279 for (i = 0; i < periodiccnt; ++i)
811 { 1280 {
812 struct ev_periodic *w = periodics [i]; 1281 ev_periodic *w = (ev_periodic *)periodics [i];
813 1282
1283 if (w->reschedule_cb)
1284 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
814 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 (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--; )
815 { 1304 {
816 ev_tstamp diff = ceil ((rt_now - w->at) / w->interval) * w->interval; 1305 if (pendingcnt [pri])
1306 break;
817 1307
818 if (fabs (diff) >= 1e-4) 1308 if (idlecnt [pri])
819 { 1309 {
820 ev_periodic_stop (EV_A_ w); 1310 queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
821 ev_periodic_start (EV_A_ w); 1311 break;
822
823 i = 0; /* restart loop, inefficient, but time jumps should be rare */
824 } 1312 }
825 } 1313 }
826 } 1314 }
827} 1315}
1316#endif
828 1317
829inline int 1318void inline_speed
830time_update_monotonic (EV_P) 1319time_update (EV_P_ ev_tstamp max_block)
831{
832 mn_now = get_clock ();
833
834 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
835 {
836 rt_now = rtmn_diff + mn_now;
837 return 0;
838 }
839 else
840 {
841 now_floor = mn_now;
842 rt_now = ev_time ();
843 return 1;
844 }
845}
846
847static void
848time_update (EV_P)
849{ 1320{
850 int i; 1321 int i;
851 1322
852#if EV_USE_MONOTONIC 1323#if EV_USE_MONOTONIC
853 if (expect_true (have_monotonic)) 1324 if (expect_true (have_monotonic))
854 { 1325 {
855 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))
856 { 1333 {
857 ev_tstamp odiff = rtmn_diff; 1334 ev_rt_now = rtmn_diff + mn_now;
1335 return;
1336 }
858 1337
1338 now_floor = mn_now;
1339 ev_rt_now = ev_time ();
1340
859 for (i = 4; --i; ) /* loop a few times, before making important decisions */ 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; )
860 { 1350 {
861 rtmn_diff = rt_now - mn_now; 1351 rtmn_diff = ev_rt_now - mn_now;
862 1352
863 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) 1353 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
864 return; /* all is well */ 1354 return; /* all is well */
865 1355
866 rt_now = ev_time (); 1356 ev_rt_now = ev_time ();
867 mn_now = get_clock (); 1357 mn_now = get_clock ();
868 now_floor = mn_now; 1358 now_floor = mn_now;
869 } 1359 }
870 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) */
1366 }
1367 else
1368#endif
1369 {
1370 ev_rt_now = ev_time ();
1371
1372 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1373 {
1374#if EV_PERIODIC_ENABLE
871 periodics_reschedule (EV_A); 1375 periodics_reschedule (EV_A);
872 /* no timer adjustment, as the monotonic clock doesn't jump */ 1376#endif
873 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */ 1377 /* adjust timers. this is easy, as the offset is the same for all of them */
1378 for (i = 0; i < timercnt; ++i)
1379 ((WT)timers [i])->at += ev_rt_now - mn_now;
874 } 1380 }
875 }
876 else
877#endif
878 {
879 rt_now = ev_time ();
880 1381
881 if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
882 {
883 periodics_reschedule (EV_A);
884
885 /* adjust timers. this is easy, as the offset is the same for all */
886 for (i = 0; i < timercnt; ++i)
887 timers [i]->at += rt_now - mn_now;
888 }
889
890 mn_now = rt_now; 1382 mn_now = ev_rt_now;
891 } 1383 }
892} 1384}
893 1385
894void 1386void
895ev_ref (EV_P) 1387ev_ref (EV_P)
… …
906static int loop_done; 1398static int loop_done;
907 1399
908void 1400void
909ev_loop (EV_P_ int flags) 1401ev_loop (EV_P_ int flags)
910{ 1402{
911 double block;
912 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 */
913 1408
914 do 1409 do
915 { 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
916 /* queue check watchers (and execute them) */ 1430 /* queue prepare watchers (and execute them) */
917 if (expect_false (preparecnt)) 1431 if (expect_false (preparecnt))
918 { 1432 {
919 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 1433 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
920 call_pending (EV_A); 1434 call_pending (EV_A);
921 } 1435 }
922 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
923 /* update fd-related kernel structures */ 1444 /* update fd-related kernel structures */
924 fd_reify (EV_A); 1445 fd_reify (EV_A);
925 1446
926 /* calculate blocking time */ 1447 /* calculate blocking time */
1448 {
1449 ev_tstamp block;
927 1450
928 /* we only need this for !monotonic clockor timers, but as we basically 1451 if (expect_false (flags & EVLOOP_NONBLOCK || idleall || !activecnt))
929 always have timers, we just calculate it always */ 1452 block = 0.; /* do not block at all */
930#if EV_USE_MONOTONIC
931 if (expect_true (have_monotonic))
932 time_update_monotonic (EV_A);
933 else 1453 else
934#endif
935 { 1454 {
936 rt_now = ev_time (); 1455 /* update time to cancel out callback processing overhead */
937 mn_now = rt_now; 1456 time_update (EV_A_ 1e100);
938 }
939 1457
940 if (flags & EVLOOP_NONBLOCK || idlecnt)
941 block = 0.;
942 else
943 {
944 block = MAX_BLOCKTIME; 1458 block = MAX_BLOCKTIME;
945 1459
946 if (timercnt) 1460 if (timercnt)
947 { 1461 {
948 ev_tstamp to = timers [0]->at - mn_now + method_fudge; 1462 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
949 if (block > to) block = to; 1463 if (block > to) block = to;
950 } 1464 }
951 1465
1466#if EV_PERIODIC_ENABLE
952 if (periodiccnt) 1467 if (periodiccnt)
953 { 1468 {
954 ev_tstamp to = periodics [0]->at - rt_now + method_fudge; 1469 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
955 if (block > to) block = to; 1470 if (block > to) block = to;
956 } 1471 }
1472#endif
957 1473
958 if (block < 0.) block = 0.; 1474 if (expect_false (block < 0.)) block = 0.;
959 } 1475 }
960 1476
1477 ++loop_count;
961 method_poll (EV_A_ block); 1478 backend_poll (EV_A_ block);
962 1479
963 /* update rt_now, do magic */ 1480 /* update ev_rt_now, do magic */
964 time_update (EV_A); 1481 time_update (EV_A_ block);
1482 }
965 1483
966 /* queue pending timers and reschedule them */ 1484 /* queue pending timers and reschedule them */
967 timers_reify (EV_A); /* relative timers called last */ 1485 timers_reify (EV_A); /* relative timers called last */
1486#if EV_PERIODIC_ENABLE
968 periodics_reify (EV_A); /* absolute timers called first */ 1487 periodics_reify (EV_A); /* absolute timers called first */
1488#endif
969 1489
1490#if EV_IDLE_ENABLE
970 /* queue idle watchers unless io or timers are pending */ 1491 /* queue idle watchers unless other events are pending */
971 if (!pendingcnt) 1492 idle_reify (EV_A);
972 queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); 1493#endif
973 1494
974 /* queue check watchers, to be executed first */ 1495 /* queue check watchers, to be executed first */
975 if (checkcnt) 1496 if (expect_false (checkcnt))
976 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 1497 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
977 1498
978 call_pending (EV_A); 1499 call_pending (EV_A);
1500
979 } 1501 }
980 while (activecnt && !loop_done); 1502 while (expect_true (activecnt && !loop_done));
981 1503
982 if (loop_done != 2) 1504 if (loop_done == EVUNLOOP_ONE)
983 loop_done = 0; 1505 loop_done = EVUNLOOP_CANCEL;
984} 1506}
985 1507
986void 1508void
987ev_unloop (EV_P_ int how) 1509ev_unloop (EV_P_ int how)
988{ 1510{
989 loop_done = how; 1511 loop_done = how;
990} 1512}
991 1513
992/*****************************************************************************/ 1514/*****************************************************************************/
993 1515
994inline void 1516void inline_size
995wlist_add (WL *head, WL elem) 1517wlist_add (WL *head, WL elem)
996{ 1518{
997 elem->next = *head; 1519 elem->next = *head;
998 *head = elem; 1520 *head = elem;
999} 1521}
1000 1522
1001inline void 1523void inline_size
1002wlist_del (WL *head, WL elem) 1524wlist_del (WL *head, WL elem)
1003{ 1525{
1004 while (*head) 1526 while (*head)
1005 { 1527 {
1006 if (*head == elem) 1528 if (*head == elem)
… …
1011 1533
1012 head = &(*head)->next; 1534 head = &(*head)->next;
1013 } 1535 }
1014} 1536}
1015 1537
1016inline void 1538void inline_speed
1017ev_clear_pending (EV_P_ W w) 1539clear_pending (EV_P_ W w)
1018{ 1540{
1019 if (w->pending) 1541 if (w->pending)
1020 { 1542 {
1021 pendings [ABSPRI (w)][w->pending - 1].w = 0; 1543 pendings [ABSPRI (w)][w->pending - 1].w = 0;
1022 w->pending = 0; 1544 w->pending = 0;
1023 } 1545 }
1024} 1546}
1025 1547
1026inline 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
1027ev_start (EV_P_ W w, int active) 1575ev_start (EV_P_ W w, int active)
1028{ 1576{
1029 if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; 1577 pri_adjust (EV_A_ w);
1030 if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1031
1032 w->active = active; 1578 w->active = active;
1033 ev_ref (EV_A); 1579 ev_ref (EV_A);
1034} 1580}
1035 1581
1036inline void 1582void inline_size
1037ev_stop (EV_P_ W w) 1583ev_stop (EV_P_ W w)
1038{ 1584{
1039 ev_unref (EV_A); 1585 ev_unref (EV_A);
1040 w->active = 0; 1586 w->active = 0;
1041} 1587}
1042 1588
1043/*****************************************************************************/ 1589/*****************************************************************************/
1044 1590
1045void 1591void noinline
1046ev_io_start (EV_P_ struct ev_io *w) 1592ev_io_start (EV_P_ ev_io *w)
1047{ 1593{
1048 int fd = w->fd; 1594 int fd = w->fd;
1049 1595
1050 if (ev_is_active (w)) 1596 if (expect_false (ev_is_active (w)))
1051 return; 1597 return;
1052 1598
1053 assert (("ev_io_start called with negative fd", fd >= 0)); 1599 assert (("ev_io_start called with negative fd", fd >= 0));
1054 1600
1055 ev_start (EV_A_ (W)w, 1); 1601 ev_start (EV_A_ (W)w, 1);
1056 array_needsize (anfds, anfdmax, fd + 1, anfds_init); 1602 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1057 wlist_add ((WL *)&anfds[fd].head, (WL)w); 1603 wlist_add (&anfds[fd].head, (WL)w);
1058 1604
1059 fd_change (EV_A_ fd); 1605 fd_change (EV_A_ fd, w->events & EV_IOFDSET);
1606 w->events &= ~ EV_IOFDSET;
1060} 1607}
1061 1608
1062void 1609void noinline
1063ev_io_stop (EV_P_ struct ev_io *w) 1610ev_io_stop (EV_P_ ev_io *w)
1064{ 1611{
1065 ev_clear_pending (EV_A_ (W)w); 1612 clear_pending (EV_A_ (W)w);
1066 if (!ev_is_active (w)) 1613 if (expect_false (!ev_is_active (w)))
1067 return; 1614 return;
1068 1615
1616 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1617
1069 wlist_del ((WL *)&anfds[w->fd].head, (WL)w); 1618 wlist_del (&anfds[w->fd].head, (WL)w);
1070 ev_stop (EV_A_ (W)w); 1619 ev_stop (EV_A_ (W)w);
1071 1620
1072 fd_change (EV_A_ w->fd); 1621 fd_change (EV_A_ w->fd, 0);
1073} 1622}
1074 1623
1075void 1624void noinline
1076ev_timer_start (EV_P_ struct ev_timer *w) 1625ev_timer_start (EV_P_ ev_timer *w)
1077{ 1626{
1078 if (ev_is_active (w)) 1627 if (expect_false (ev_is_active (w)))
1079 return; 1628 return;
1080 1629
1081 w->at += mn_now; 1630 ((WT)w)->at += mn_now;
1082 1631
1083 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 1632 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1084 1633
1085 ev_start (EV_A_ (W)w, ++timercnt); 1634 ev_start (EV_A_ (W)w, ++timercnt);
1086 array_needsize (timers, timermax, timercnt, ); 1635 array_needsize (WT, timers, timermax, timercnt, EMPTY2);
1087 timers [timercnt - 1] = w; 1636 timers [timercnt - 1] = (WT)w;
1088 upheap ((WT *)timers, timercnt - 1); 1637 upheap (timers, timercnt - 1);
1089}
1090 1638
1091void 1639 /*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
1640}
1641
1642void noinline
1092ev_timer_stop (EV_P_ struct ev_timer *w) 1643ev_timer_stop (EV_P_ ev_timer *w)
1093{ 1644{
1094 ev_clear_pending (EV_A_ (W)w); 1645 clear_pending (EV_A_ (W)w);
1095 if (!ev_is_active (w)) 1646 if (expect_false (!ev_is_active (w)))
1096 return; 1647 return;
1097 1648
1098 if (w->active < timercnt--) 1649 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w));
1650
1651 {
1652 int active = ((W)w)->active;
1653
1654 if (expect_true (--active < --timercnt))
1099 { 1655 {
1100 timers [w->active - 1] = timers [timercnt]; 1656 timers [active] = timers [timercnt];
1101 downheap ((WT *)timers, timercnt, w->active - 1); 1657 adjustheap (timers, timercnt, active);
1102 } 1658 }
1659 }
1103 1660
1104 w->at = w->repeat; 1661 ((WT)w)->at -= mn_now;
1105 1662
1106 ev_stop (EV_A_ (W)w); 1663 ev_stop (EV_A_ (W)w);
1107} 1664}
1108 1665
1109void 1666void noinline
1110ev_timer_again (EV_P_ struct ev_timer *w) 1667ev_timer_again (EV_P_ ev_timer *w)
1111{ 1668{
1112 if (ev_is_active (w)) 1669 if (ev_is_active (w))
1113 { 1670 {
1114 if (w->repeat) 1671 if (w->repeat)
1115 { 1672 {
1116 w->at = mn_now + w->repeat; 1673 ((WT)w)->at = mn_now + w->repeat;
1117 downheap ((WT *)timers, timercnt, w->active - 1); 1674 adjustheap (timers, timercnt, ((W)w)->active - 1);
1118 } 1675 }
1119 else 1676 else
1120 ev_timer_stop (EV_A_ w); 1677 ev_timer_stop (EV_A_ w);
1121 } 1678 }
1122 else if (w->repeat) 1679 else if (w->repeat)
1680 {
1681 w->at = w->repeat;
1123 ev_timer_start (EV_A_ w); 1682 ev_timer_start (EV_A_ w);
1683 }
1124} 1684}
1125 1685
1126void 1686#if EV_PERIODIC_ENABLE
1687void noinline
1127ev_periodic_start (EV_P_ struct ev_periodic *w) 1688ev_periodic_start (EV_P_ ev_periodic *w)
1128{ 1689{
1129 if (ev_is_active (w)) 1690 if (expect_false (ev_is_active (w)))
1130 return; 1691 return;
1131 1692
1693 if (w->reschedule_cb)
1694 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1695 else if (w->interval)
1696 {
1132 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 1697 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1133
1134 /* this formula differs from the one in periodic_reify because we do not always round up */ 1698 /* this formula differs from the one in periodic_reify because we do not always round up */
1135 if (w->interval)
1136 w->at += ceil ((rt_now - w->at) / w->interval) * w->interval; 1699 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1700 }
1701 else
1702 ((WT)w)->at = w->offset;
1137 1703
1138 ev_start (EV_A_ (W)w, ++periodiccnt); 1704 ev_start (EV_A_ (W)w, ++periodiccnt);
1139 array_needsize (periodics, periodicmax, periodiccnt, ); 1705 array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2);
1140 periodics [periodiccnt - 1] = w; 1706 periodics [periodiccnt - 1] = (WT)w;
1141 upheap ((WT *)periodics, periodiccnt - 1); 1707 upheap (periodics, periodiccnt - 1);
1142}
1143 1708
1144void 1709 /*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
1710}
1711
1712void noinline
1145ev_periodic_stop (EV_P_ struct ev_periodic *w) 1713ev_periodic_stop (EV_P_ ev_periodic *w)
1146{ 1714{
1147 ev_clear_pending (EV_A_ (W)w); 1715 clear_pending (EV_A_ (W)w);
1148 if (!ev_is_active (w)) 1716 if (expect_false (!ev_is_active (w)))
1149 return; 1717 return;
1150 1718
1151 if (w->active < periodiccnt--) 1719 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w));
1720
1721 {
1722 int active = ((W)w)->active;
1723
1724 if (expect_true (--active < --periodiccnt))
1152 { 1725 {
1153 periodics [w->active - 1] = periodics [periodiccnt]; 1726 periodics [active] = periodics [periodiccnt];
1154 downheap ((WT *)periodics, periodiccnt, w->active - 1); 1727 adjustheap (periodics, periodiccnt, active);
1155 } 1728 }
1729 }
1156 1730
1157 ev_stop (EV_A_ (W)w); 1731 ev_stop (EV_A_ (W)w);
1158} 1732}
1159 1733
1160void 1734void noinline
1161ev_idle_start (EV_P_ struct ev_idle *w) 1735ev_periodic_again (EV_P_ ev_periodic *w)
1162{ 1736{
1163 if (ev_is_active (w)) 1737 /* TODO: use adjustheap and recalculation */
1164 return;
1165
1166 ev_start (EV_A_ (W)w, ++idlecnt);
1167 array_needsize (idles, idlemax, idlecnt, );
1168 idles [idlecnt - 1] = w;
1169}
1170
1171void
1172ev_idle_stop (EV_P_ struct ev_idle *w)
1173{
1174 ev_clear_pending (EV_A_ (W)w);
1175 if (ev_is_active (w))
1176 return;
1177
1178 idles [w->active - 1] = idles [--idlecnt];
1179 ev_stop (EV_A_ (W)w); 1738 ev_periodic_stop (EV_A_ w);
1739 ev_periodic_start (EV_A_ w);
1180} 1740}
1181 1741#endif
1182void
1183ev_prepare_start (EV_P_ struct ev_prepare *w)
1184{
1185 if (ev_is_active (w))
1186 return;
1187
1188 ev_start (EV_A_ (W)w, ++preparecnt);
1189 array_needsize (prepares, preparemax, preparecnt, );
1190 prepares [preparecnt - 1] = w;
1191}
1192
1193void
1194ev_prepare_stop (EV_P_ struct ev_prepare *w)
1195{
1196 ev_clear_pending (EV_A_ (W)w);
1197 if (ev_is_active (w))
1198 return;
1199
1200 prepares [w->active - 1] = prepares [--preparecnt];
1201 ev_stop (EV_A_ (W)w);
1202}
1203
1204void
1205ev_check_start (EV_P_ struct ev_check *w)
1206{
1207 if (ev_is_active (w))
1208 return;
1209
1210 ev_start (EV_A_ (W)w, ++checkcnt);
1211 array_needsize (checks, checkmax, checkcnt, );
1212 checks [checkcnt - 1] = w;
1213}
1214
1215void
1216ev_check_stop (EV_P_ struct ev_check *w)
1217{
1218 ev_clear_pending (EV_A_ (W)w);
1219 if (ev_is_active (w))
1220 return;
1221
1222 checks [w->active - 1] = checks [--checkcnt];
1223 ev_stop (EV_A_ (W)w);
1224}
1225 1742
1226#ifndef SA_RESTART 1743#ifndef SA_RESTART
1227# define SA_RESTART 0 1744# define SA_RESTART 0
1228#endif 1745#endif
1229 1746
1230void 1747void noinline
1231ev_signal_start (EV_P_ struct ev_signal *w) 1748ev_signal_start (EV_P_ ev_signal *w)
1232{ 1749{
1233#if EV_MULTIPLICITY 1750#if EV_MULTIPLICITY
1234 assert (("signal watchers are only supported in the default loop", loop == default_loop)); 1751 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1235#endif 1752#endif
1236 if (ev_is_active (w)) 1753 if (expect_false (ev_is_active (w)))
1237 return; 1754 return;
1238 1755
1239 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 1756 assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1240 1757
1758 {
1759#ifndef _WIN32
1760 sigset_t full, prev;
1761 sigfillset (&full);
1762 sigprocmask (SIG_SETMASK, &full, &prev);
1763#endif
1764
1765 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1766
1767#ifndef _WIN32
1768 sigprocmask (SIG_SETMASK, &prev, 0);
1769#endif
1770 }
1771
1241 ev_start (EV_A_ (W)w, 1); 1772 ev_start (EV_A_ (W)w, 1);
1242 array_needsize (signals, signalmax, w->signum, signals_init);
1243 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); 1773 wlist_add (&signals [w->signum - 1].head, (WL)w);
1244 1774
1245 if (!w->next) 1775 if (!((WL)w)->next)
1246 { 1776 {
1777#if _WIN32
1778 signal (w->signum, sighandler);
1779#else
1247 struct sigaction sa; 1780 struct sigaction sa;
1248 sa.sa_handler = sighandler; 1781 sa.sa_handler = sighandler;
1249 sigfillset (&sa.sa_mask); 1782 sigfillset (&sa.sa_mask);
1250 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 1783 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1251 sigaction (w->signum, &sa, 0); 1784 sigaction (w->signum, &sa, 0);
1785#endif
1252 } 1786 }
1253} 1787}
1254 1788
1255void 1789void noinline
1256ev_signal_stop (EV_P_ struct ev_signal *w) 1790ev_signal_stop (EV_P_ ev_signal *w)
1257{ 1791{
1258 ev_clear_pending (EV_A_ (W)w); 1792 clear_pending (EV_A_ (W)w);
1259 if (!ev_is_active (w)) 1793 if (expect_false (!ev_is_active (w)))
1260 return; 1794 return;
1261 1795
1262 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); 1796 wlist_del (&signals [w->signum - 1].head, (WL)w);
1263 ev_stop (EV_A_ (W)w); 1797 ev_stop (EV_A_ (W)w);
1264 1798
1265 if (!signals [w->signum - 1].head) 1799 if (!signals [w->signum - 1].head)
1266 signal (w->signum, SIG_DFL); 1800 signal (w->signum, SIG_DFL);
1267} 1801}
1268 1802
1269void 1803void
1270ev_child_start (EV_P_ struct ev_child *w) 1804ev_child_start (EV_P_ ev_child *w)
1271{ 1805{
1272#if EV_MULTIPLICITY 1806#if EV_MULTIPLICITY
1273 assert (("child watchers are only supported in the default loop", loop == default_loop)); 1807 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1274#endif 1808#endif
1275 if (ev_is_active (w)) 1809 if (expect_false (ev_is_active (w)))
1276 return; 1810 return;
1277 1811
1278 ev_start (EV_A_ (W)w, 1); 1812 ev_start (EV_A_ (W)w, 1);
1279 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1813 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1280} 1814}
1281 1815
1282void 1816void
1283ev_child_stop (EV_P_ struct ev_child *w) 1817ev_child_stop (EV_P_ ev_child *w)
1284{ 1818{
1285 ev_clear_pending (EV_A_ (W)w); 1819 clear_pending (EV_A_ (W)w);
1286 if (ev_is_active (w)) 1820 if (expect_false (!ev_is_active (w)))
1287 return; 1821 return;
1288 1822
1289 wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1823 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1290 ev_stop (EV_A_ (W)w); 1824 ev_stop (EV_A_ (W)w);
1291} 1825}
1292 1826
1827#if EV_STAT_ENABLE
1828
1829# ifdef _WIN32
1830# undef lstat
1831# define lstat(a,b) _stati64 (a,b)
1832# endif
1833
1834#define DEF_STAT_INTERVAL 5.0074891
1835#define MIN_STAT_INTERVAL 0.1074891
1836
1837static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
1838
1839#if EV_USE_INOTIFY
1840# define EV_INOTIFY_BUFSIZE 8192
1841
1842static void noinline
1843infy_add (EV_P_ ev_stat *w)
1844{
1845 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);
1846
1847 if (w->wd < 0)
1848 {
1849 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
1850
1851 /* monitor some parent directory for speedup hints */
1852 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
1853 {
1854 char path [4096];
1855 strcpy (path, w->path);
1856
1857 do
1858 {
1859 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
1860 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
1861
1862 char *pend = strrchr (path, '/');
1863
1864 if (!pend)
1865 break; /* whoops, no '/', complain to your admin */
1866
1867 *pend = 0;
1868 w->wd = inotify_add_watch (fs_fd, path, mask);
1869 }
1870 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
1871 }
1872 }
1873 else
1874 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
1875
1876 if (w->wd >= 0)
1877 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
1878}
1879
1880static void noinline
1881infy_del (EV_P_ ev_stat *w)
1882{
1883 int slot;
1884 int wd = w->wd;
1885
1886 if (wd < 0)
1887 return;
1888
1889 w->wd = -2;
1890 slot = wd & (EV_INOTIFY_HASHSIZE - 1);
1891 wlist_del (&fs_hash [slot].head, (WL)w);
1892
1893 /* remove this watcher, if others are watching it, they will rearm */
1894 inotify_rm_watch (fs_fd, wd);
1895}
1896
1897static void noinline
1898infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
1899{
1900 if (slot < 0)
1901 /* overflow, need to check for all hahs slots */
1902 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
1903 infy_wd (EV_A_ slot, wd, ev);
1904 else
1905 {
1906 WL w_;
1907
1908 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
1909 {
1910 ev_stat *w = (ev_stat *)w_;
1911 w_ = w_->next; /* lets us remove this watcher and all before it */
1912
1913 if (w->wd == wd || wd == -1)
1914 {
1915 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
1916 {
1917 w->wd = -1;
1918 infy_add (EV_A_ w); /* re-add, no matter what */
1919 }
1920
1921 stat_timer_cb (EV_A_ &w->timer, 0);
1922 }
1923 }
1924 }
1925}
1926
1927static void
1928infy_cb (EV_P_ ev_io *w, int revents)
1929{
1930 char buf [EV_INOTIFY_BUFSIZE];
1931 struct inotify_event *ev = (struct inotify_event *)buf;
1932 int ofs;
1933 int len = read (fs_fd, buf, sizeof (buf));
1934
1935 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
1936 infy_wd (EV_A_ ev->wd, ev->wd, ev);
1937}
1938
1939void inline_size
1940infy_init (EV_P)
1941{
1942 if (fs_fd != -2)
1943 return;
1944
1945 fs_fd = inotify_init ();
1946
1947 if (fs_fd >= 0)
1948 {
1949 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
1950 ev_set_priority (&fs_w, EV_MAXPRI);
1951 ev_io_start (EV_A_ &fs_w);
1952 }
1953}
1954
1955void inline_size
1956infy_fork (EV_P)
1957{
1958 int slot;
1959
1960 if (fs_fd < 0)
1961 return;
1962
1963 close (fs_fd);
1964 fs_fd = inotify_init ();
1965
1966 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
1967 {
1968 WL w_ = fs_hash [slot].head;
1969 fs_hash [slot].head = 0;
1970
1971 while (w_)
1972 {
1973 ev_stat *w = (ev_stat *)w_;
1974 w_ = w_->next; /* lets us add this watcher */
1975
1976 w->wd = -1;
1977
1978 if (fs_fd >= 0)
1979 infy_add (EV_A_ w); /* re-add, no matter what */
1980 else
1981 ev_timer_start (EV_A_ &w->timer);
1982 }
1983
1984 }
1985}
1986
1987#endif
1988
1989void
1990ev_stat_stat (EV_P_ ev_stat *w)
1991{
1992 if (lstat (w->path, &w->attr) < 0)
1993 w->attr.st_nlink = 0;
1994 else if (!w->attr.st_nlink)
1995 w->attr.st_nlink = 1;
1996}
1997
1998static void noinline
1999stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2000{
2001 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2002
2003 /* we copy this here each the time so that */
2004 /* prev has the old value when the callback gets invoked */
2005 w->prev = w->attr;
2006 ev_stat_stat (EV_A_ w);
2007
2008 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2009 if (
2010 w->prev.st_dev != w->attr.st_dev
2011 || w->prev.st_ino != w->attr.st_ino
2012 || w->prev.st_mode != w->attr.st_mode
2013 || w->prev.st_nlink != w->attr.st_nlink
2014 || w->prev.st_uid != w->attr.st_uid
2015 || w->prev.st_gid != w->attr.st_gid
2016 || w->prev.st_rdev != w->attr.st_rdev
2017 || w->prev.st_size != w->attr.st_size
2018 || w->prev.st_atime != w->attr.st_atime
2019 || w->prev.st_mtime != w->attr.st_mtime
2020 || w->prev.st_ctime != w->attr.st_ctime
2021 ) {
2022 #if EV_USE_INOTIFY
2023 infy_del (EV_A_ w);
2024 infy_add (EV_A_ w);
2025 ev_stat_stat (EV_A_ w); /* avoid race... */
2026 #endif
2027
2028 ev_feed_event (EV_A_ w, EV_STAT);
2029 }
2030}
2031
2032void
2033ev_stat_start (EV_P_ ev_stat *w)
2034{
2035 if (expect_false (ev_is_active (w)))
2036 return;
2037
2038 /* since we use memcmp, we need to clear any padding data etc. */
2039 memset (&w->prev, 0, sizeof (ev_statdata));
2040 memset (&w->attr, 0, sizeof (ev_statdata));
2041
2042 ev_stat_stat (EV_A_ w);
2043
2044 if (w->interval < MIN_STAT_INTERVAL)
2045 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2046
2047 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
2048 ev_set_priority (&w->timer, ev_priority (w));
2049
2050#if EV_USE_INOTIFY
2051 infy_init (EV_A);
2052
2053 if (fs_fd >= 0)
2054 infy_add (EV_A_ w);
2055 else
2056#endif
2057 ev_timer_start (EV_A_ &w->timer);
2058
2059 ev_start (EV_A_ (W)w, 1);
2060}
2061
2062void
2063ev_stat_stop (EV_P_ ev_stat *w)
2064{
2065 clear_pending (EV_A_ (W)w);
2066 if (expect_false (!ev_is_active (w)))
2067 return;
2068
2069#if EV_USE_INOTIFY
2070 infy_del (EV_A_ w);
2071#endif
2072 ev_timer_stop (EV_A_ &w->timer);
2073
2074 ev_stop (EV_A_ (W)w);
2075}
2076#endif
2077
2078#if EV_IDLE_ENABLE
2079void
2080ev_idle_start (EV_P_ ev_idle *w)
2081{
2082 if (expect_false (ev_is_active (w)))
2083 return;
2084
2085 pri_adjust (EV_A_ (W)w);
2086
2087 {
2088 int active = ++idlecnt [ABSPRI (w)];
2089
2090 ++idleall;
2091 ev_start (EV_A_ (W)w, active);
2092
2093 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2094 idles [ABSPRI (w)][active - 1] = w;
2095 }
2096}
2097
2098void
2099ev_idle_stop (EV_P_ ev_idle *w)
2100{
2101 clear_pending (EV_A_ (W)w);
2102 if (expect_false (!ev_is_active (w)))
2103 return;
2104
2105 {
2106 int active = ((W)w)->active;
2107
2108 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2109 ((W)idles [ABSPRI (w)][active - 1])->active = active;
2110
2111 ev_stop (EV_A_ (W)w);
2112 --idleall;
2113 }
2114}
2115#endif
2116
2117void
2118ev_prepare_start (EV_P_ ev_prepare *w)
2119{
2120 if (expect_false (ev_is_active (w)))
2121 return;
2122
2123 ev_start (EV_A_ (W)w, ++preparecnt);
2124 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2125 prepares [preparecnt - 1] = w;
2126}
2127
2128void
2129ev_prepare_stop (EV_P_ ev_prepare *w)
2130{
2131 clear_pending (EV_A_ (W)w);
2132 if (expect_false (!ev_is_active (w)))
2133 return;
2134
2135 {
2136 int active = ((W)w)->active;
2137 prepares [active - 1] = prepares [--preparecnt];
2138 ((W)prepares [active - 1])->active = active;
2139 }
2140
2141 ev_stop (EV_A_ (W)w);
2142}
2143
2144void
2145ev_check_start (EV_P_ ev_check *w)
2146{
2147 if (expect_false (ev_is_active (w)))
2148 return;
2149
2150 ev_start (EV_A_ (W)w, ++checkcnt);
2151 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2152 checks [checkcnt - 1] = w;
2153}
2154
2155void
2156ev_check_stop (EV_P_ ev_check *w)
2157{
2158 clear_pending (EV_A_ (W)w);
2159 if (expect_false (!ev_is_active (w)))
2160 return;
2161
2162 {
2163 int active = ((W)w)->active;
2164 checks [active - 1] = checks [--checkcnt];
2165 ((W)checks [active - 1])->active = active;
2166 }
2167
2168 ev_stop (EV_A_ (W)w);
2169}
2170
2171#if EV_EMBED_ENABLE
2172void noinline
2173ev_embed_sweep (EV_P_ ev_embed *w)
2174{
2175 ev_loop (w->loop, EVLOOP_NONBLOCK);
2176}
2177
2178static void
2179embed_cb (EV_P_ ev_io *io, int revents)
2180{
2181 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2182
2183 if (ev_cb (w))
2184 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2185 else
2186 ev_embed_sweep (loop, w);
2187}
2188
2189void
2190ev_embed_start (EV_P_ ev_embed *w)
2191{
2192 if (expect_false (ev_is_active (w)))
2193 return;
2194
2195 {
2196 struct ev_loop *loop = w->loop;
2197 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2198 ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
2199 }
2200
2201 ev_set_priority (&w->io, ev_priority (w));
2202 ev_io_start (EV_A_ &w->io);
2203
2204 ev_start (EV_A_ (W)w, 1);
2205}
2206
2207void
2208ev_embed_stop (EV_P_ ev_embed *w)
2209{
2210 clear_pending (EV_A_ (W)w);
2211 if (expect_false (!ev_is_active (w)))
2212 return;
2213
2214 ev_io_stop (EV_A_ &w->io);
2215
2216 ev_stop (EV_A_ (W)w);
2217}
2218#endif
2219
2220#if EV_FORK_ENABLE
2221void
2222ev_fork_start (EV_P_ ev_fork *w)
2223{
2224 if (expect_false (ev_is_active (w)))
2225 return;
2226
2227 ev_start (EV_A_ (W)w, ++forkcnt);
2228 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2229 forks [forkcnt - 1] = w;
2230}
2231
2232void
2233ev_fork_stop (EV_P_ ev_fork *w)
2234{
2235 clear_pending (EV_A_ (W)w);
2236 if (expect_false (!ev_is_active (w)))
2237 return;
2238
2239 {
2240 int active = ((W)w)->active;
2241 forks [active - 1] = forks [--forkcnt];
2242 ((W)forks [active - 1])->active = active;
2243 }
2244
2245 ev_stop (EV_A_ (W)w);
2246}
2247#endif
2248
1293/*****************************************************************************/ 2249/*****************************************************************************/
1294 2250
1295struct ev_once 2251struct ev_once
1296{ 2252{
1297 struct ev_io io; 2253 ev_io io;
1298 struct ev_timer to; 2254 ev_timer to;
1299 void (*cb)(int revents, void *arg); 2255 void (*cb)(int revents, void *arg);
1300 void *arg; 2256 void *arg;
1301}; 2257};
1302 2258
1303static void 2259static void
… …
1306 void (*cb)(int revents, void *arg) = once->cb; 2262 void (*cb)(int revents, void *arg) = once->cb;
1307 void *arg = once->arg; 2263 void *arg = once->arg;
1308 2264
1309 ev_io_stop (EV_A_ &once->io); 2265 ev_io_stop (EV_A_ &once->io);
1310 ev_timer_stop (EV_A_ &once->to); 2266 ev_timer_stop (EV_A_ &once->to);
1311 free (once); 2267 ev_free (once);
1312 2268
1313 cb (revents, arg); 2269 cb (revents, arg);
1314} 2270}
1315 2271
1316static void 2272static void
1317once_cb_io (EV_P_ struct ev_io *w, int revents) 2273once_cb_io (EV_P_ ev_io *w, int revents)
1318{ 2274{
1319 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 2275 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1320} 2276}
1321 2277
1322static void 2278static void
1323once_cb_to (EV_P_ struct ev_timer *w, int revents) 2279once_cb_to (EV_P_ ev_timer *w, int revents)
1324{ 2280{
1325 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 2281 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1326} 2282}
1327 2283
1328void 2284void
1329ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 2285ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1330{ 2286{
1331 struct ev_once *once = malloc (sizeof (struct ev_once)); 2287 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1332 2288
1333 if (!once) 2289 if (expect_false (!once))
2290 {
1334 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 2291 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1335 else 2292 return;
1336 { 2293 }
2294
1337 once->cb = cb; 2295 once->cb = cb;
1338 once->arg = arg; 2296 once->arg = arg;
1339 2297
1340 ev_watcher_init (&once->io, once_cb_io); 2298 ev_init (&once->io, once_cb_io);
1341 if (fd >= 0) 2299 if (fd >= 0)
1342 { 2300 {
1343 ev_io_set (&once->io, fd, events); 2301 ev_io_set (&once->io, fd, events);
1344 ev_io_start (EV_A_ &once->io); 2302 ev_io_start (EV_A_ &once->io);
1345 } 2303 }
1346 2304
1347 ev_watcher_init (&once->to, once_cb_to); 2305 ev_init (&once->to, once_cb_to);
1348 if (timeout >= 0.) 2306 if (timeout >= 0.)
1349 { 2307 {
1350 ev_timer_set (&once->to, timeout, 0.); 2308 ev_timer_set (&once->to, timeout, 0.);
1351 ev_timer_start (EV_A_ &once->to); 2309 ev_timer_start (EV_A_ &once->to);
1352 }
1353 } 2310 }
1354} 2311}
1355 2312
2313#ifdef __cplusplus
2314}
2315#endif
2316

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