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Comparing libev/ev.c (file contents):
Revision 1.59 by root, Sun Nov 4 18:15:16 2007 UTC vs.
Revision 1.187 by root, Sun Dec 16 21:54:28 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_USE_POLL 155#ifndef EV_USE_POLL
64# define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */ 156# ifdef _WIN32
157# define EV_USE_POLL 0
158# else
159# define EV_USE_POLL 1
160# endif
65#endif 161#endif
66 162
67#ifndef EV_USE_EPOLL 163#ifndef EV_USE_EPOLL
68# define EV_USE_EPOLL 0 164# define EV_USE_EPOLL 0
69#endif 165#endif
70 166
71#ifndef EV_USE_KQUEUE 167#ifndef EV_USE_KQUEUE
72# define EV_USE_KQUEUE 0 168# define EV_USE_KQUEUE 0
73#endif 169#endif
74 170
75#ifndef EV_USE_REALTIME 171#ifndef EV_USE_PORT
76# define EV_USE_REALTIME 1 172# define EV_USE_PORT 0
173#endif
174
175#ifndef EV_USE_INOTIFY
176# define EV_USE_INOTIFY 0
177#endif
178
179#ifndef EV_PID_HASHSIZE
180# if EV_MINIMAL
181# define EV_PID_HASHSIZE 1
182# else
183# define EV_PID_HASHSIZE 16
184# endif
185#endif
186
187#ifndef EV_INOTIFY_HASHSIZE
188# if EV_MINIMAL
189# define EV_INOTIFY_HASHSIZE 1
190# else
191# define EV_INOTIFY_HASHSIZE 16
192# endif
77#endif 193#endif
78 194
79/**/ 195/**/
80 196
81#ifndef CLOCK_MONOTONIC 197#ifndef CLOCK_MONOTONIC
… …
86#ifndef CLOCK_REALTIME 202#ifndef CLOCK_REALTIME
87# undef EV_USE_REALTIME 203# undef EV_USE_REALTIME
88# define EV_USE_REALTIME 0 204# define EV_USE_REALTIME 0
89#endif 205#endif
90 206
207#if !EV_STAT_ENABLE
208# undef EV_USE_INOTIFY
209# define EV_USE_INOTIFY 0
210#endif
211
212#if EV_USE_INOTIFY
213# include <sys/inotify.h>
214#endif
215
216#if EV_SELECT_IS_WINSOCKET
217# include <winsock.h>
218#endif
219
91/**/ 220/**/
92 221
222/*
223 * This is used to avoid floating point rounding problems.
224 * It is added to ev_rt_now when scheduling periodics
225 * to ensure progress, time-wise, even when rounding
226 * errors are against us.
227 * This value is good at least till the year 4000.
228 * Better solutions welcome.
229 */
230#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
231
93#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 232#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
94#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */ 233#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
95#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
96/*#define CLEANUP_INTERVAL 300. /* how often to try to free memory and re-check fds */ 234/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
97 235
98#include "ev.h"
99
100#if __GNUC__ >= 3 236#if __GNUC__ >= 4
101# define expect(expr,value) __builtin_expect ((expr),(value)) 237# define expect(expr,value) __builtin_expect ((expr),(value))
102# define inline inline 238# define noinline __attribute__ ((noinline))
103#else 239#else
104# define expect(expr,value) (expr) 240# define expect(expr,value) (expr)
105# define inline static 241# define noinline
242# if __STDC_VERSION__ < 199901L
243# define inline
244# endif
106#endif 245#endif
107 246
108#define expect_false(expr) expect ((expr) != 0, 0) 247#define expect_false(expr) expect ((expr) != 0, 0)
109#define expect_true(expr) expect ((expr) != 0, 1) 248#define expect_true(expr) expect ((expr) != 0, 1)
249#define inline_size static inline
250
251#if EV_MINIMAL
252# define inline_speed static noinline
253#else
254# define inline_speed static inline
255#endif
110 256
111#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 257#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
112#define ABSPRI(w) ((w)->priority - EV_MINPRI) 258#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
113 259
260#define EMPTY /* required for microsofts broken pseudo-c compiler */
261#define EMPTY2(a,b) /* used to suppress some warnings */
262
114typedef struct ev_watcher *W; 263typedef ev_watcher *W;
115typedef struct ev_watcher_list *WL; 264typedef ev_watcher_list *WL;
116typedef struct ev_watcher_time *WT; 265typedef ev_watcher_time *WT;
117 266
118static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 267static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
119 268
269#ifdef _WIN32
270# include "ev_win32.c"
271#endif
272
120/*****************************************************************************/ 273/*****************************************************************************/
121 274
275static void (*syserr_cb)(const char *msg);
276
277void
278ev_set_syserr_cb (void (*cb)(const char *msg))
279{
280 syserr_cb = cb;
281}
282
283static void noinline
284syserr (const char *msg)
285{
286 if (!msg)
287 msg = "(libev) system error";
288
289 if (syserr_cb)
290 syserr_cb (msg);
291 else
292 {
293 perror (msg);
294 abort ();
295 }
296}
297
298static void *(*alloc)(void *ptr, long size);
299
300void
301ev_set_allocator (void *(*cb)(void *ptr, long size))
302{
303 alloc = cb;
304}
305
306inline_speed void *
307ev_realloc (void *ptr, long size)
308{
309 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
310
311 if (!ptr && size)
312 {
313 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
314 abort ();
315 }
316
317 return ptr;
318}
319
320#define ev_malloc(size) ev_realloc (0, (size))
321#define ev_free(ptr) ev_realloc ((ptr), 0)
322
323/*****************************************************************************/
324
122typedef struct 325typedef struct
123{ 326{
124 struct ev_watcher_list *head; 327 WL head;
125 unsigned char events; 328 unsigned char events;
126 unsigned char reify; 329 unsigned char reify;
330#if EV_SELECT_IS_WINSOCKET
331 SOCKET handle;
332#endif
127} ANFD; 333} ANFD;
128 334
129typedef struct 335typedef struct
130{ 336{
131 W w; 337 W w;
132 int events; 338 int events;
133} ANPENDING; 339} ANPENDING;
134 340
341#if EV_USE_INOTIFY
342typedef struct
343{
344 WL head;
345} ANFS;
346#endif
347
135#if EV_MULTIPLICITY 348#if EV_MULTIPLICITY
136 349
137struct ev_loop 350 struct ev_loop
138{ 351 {
352 ev_tstamp ev_rt_now;
353 #define ev_rt_now ((loop)->ev_rt_now)
139# define VAR(name,decl) decl; 354 #define VAR(name,decl) decl;
140# include "ev_vars.h" 355 #include "ev_vars.h"
141};
142# undef VAR 356 #undef VAR
357 };
143# include "ev_wrap.h" 358 #include "ev_wrap.h"
359
360 static struct ev_loop default_loop_struct;
361 struct ev_loop *ev_default_loop_ptr;
144 362
145#else 363#else
146 364
365 ev_tstamp ev_rt_now;
147# define VAR(name,decl) static decl; 366 #define VAR(name,decl) static decl;
148# include "ev_vars.h" 367 #include "ev_vars.h"
149# undef VAR 368 #undef VAR
369
370 static int ev_default_loop_ptr;
150 371
151#endif 372#endif
152 373
153/*****************************************************************************/ 374/*****************************************************************************/
154 375
155inline ev_tstamp 376ev_tstamp
156ev_time (void) 377ev_time (void)
157{ 378{
158#if EV_USE_REALTIME 379#if EV_USE_REALTIME
159 struct timespec ts; 380 struct timespec ts;
160 clock_gettime (CLOCK_REALTIME, &ts); 381 clock_gettime (CLOCK_REALTIME, &ts);
… …
164 gettimeofday (&tv, 0); 385 gettimeofday (&tv, 0);
165 return tv.tv_sec + tv.tv_usec * 1e-6; 386 return tv.tv_sec + tv.tv_usec * 1e-6;
166#endif 387#endif
167} 388}
168 389
169inline ev_tstamp 390ev_tstamp inline_size
170get_clock (void) 391get_clock (void)
171{ 392{
172#if EV_USE_MONOTONIC 393#if EV_USE_MONOTONIC
173 if (expect_true (have_monotonic)) 394 if (expect_true (have_monotonic))
174 { 395 {
… …
179#endif 400#endif
180 401
181 return ev_time (); 402 return ev_time ();
182} 403}
183 404
405#if EV_MULTIPLICITY
184ev_tstamp 406ev_tstamp
185ev_now (EV_P) 407ev_now (EV_P)
186{ 408{
187 return rt_now; 409 return ev_rt_now;
188} 410}
411#endif
189 412
190#define array_roundsize(base,n) ((n) | 4 & ~3) 413int inline_size
414array_nextsize (int elem, int cur, int cnt)
415{
416 int ncur = cur + 1;
191 417
418 do
419 ncur <<= 1;
420 while (cnt > ncur);
421
422 /* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */
423 if (elem * ncur > 4096)
424 {
425 ncur *= elem;
426 ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095;
427 ncur = ncur - sizeof (void *) * 4;
428 ncur /= elem;
429 }
430
431 return ncur;
432}
433
434static noinline void *
435array_realloc (int elem, void *base, int *cur, int cnt)
436{
437 *cur = array_nextsize (elem, *cur, cnt);
438 return ev_realloc (base, elem * *cur);
439}
440
192#define array_needsize(base,cur,cnt,init) \ 441#define array_needsize(type,base,cur,cnt,init) \
193 if (expect_false ((cnt) > cur)) \ 442 if (expect_false ((cnt) > (cur))) \
194 { \ 443 { \
195 int newcnt = cur; \ 444 int ocur_ = (cur); \
196 do \ 445 (base) = (type *)array_realloc \
197 { \ 446 (sizeof (type), (base), &(cur), (cnt)); \
198 newcnt = array_roundsize (base, newcnt << 1); \ 447 init ((base) + (ocur_), (cur) - ocur_); \
199 } \ 448 }
200 while ((cnt) > newcnt); \ 449
450#if 0
451#define array_slim(type,stem) \
452 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
201 \ 453 { \
202 base = realloc (base, sizeof (*base) * (newcnt)); \ 454 stem ## max = array_roundsize (stem ## cnt >> 1); \
203 init (base + cur, newcnt - cur); \ 455 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
204 cur = newcnt; \ 456 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
205 } 457 }
458#endif
459
460#define array_free(stem, idx) \
461 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
206 462
207/*****************************************************************************/ 463/*****************************************************************************/
208 464
209static void 465void noinline
466ev_feed_event (EV_P_ void *w, int revents)
467{
468 W w_ = (W)w;
469 int pri = ABSPRI (w_);
470
471 if (expect_false (w_->pending))
472 pendings [pri][w_->pending - 1].events |= revents;
473 else
474 {
475 w_->pending = ++pendingcnt [pri];
476 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
477 pendings [pri][w_->pending - 1].w = w_;
478 pendings [pri][w_->pending - 1].events = revents;
479 }
480}
481
482void inline_speed
483queue_events (EV_P_ W *events, int eventcnt, int type)
484{
485 int i;
486
487 for (i = 0; i < eventcnt; ++i)
488 ev_feed_event (EV_A_ events [i], type);
489}
490
491/*****************************************************************************/
492
493void inline_size
210anfds_init (ANFD *base, int count) 494anfds_init (ANFD *base, int count)
211{ 495{
212 while (count--) 496 while (count--)
213 { 497 {
214 base->head = 0; 498 base->head = 0;
… …
217 501
218 ++base; 502 ++base;
219 } 503 }
220} 504}
221 505
222static void 506void 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) 507fd_event (EV_P_ int fd, int revents)
248{ 508{
249 ANFD *anfd = anfds + fd; 509 ANFD *anfd = anfds + fd;
250 struct ev_io *w; 510 ev_io *w;
251 511
252 for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) 512 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
253 { 513 {
254 int ev = w->events & events; 514 int ev = w->events & revents;
255 515
256 if (ev) 516 if (ev)
257 event (EV_A_ (W)w, ev); 517 ev_feed_event (EV_A_ (W)w, ev);
258 } 518 }
259} 519}
260 520
261/*****************************************************************************/ 521void
522ev_feed_fd_event (EV_P_ int fd, int revents)
523{
524 if (fd >= 0 && fd < anfdmax)
525 fd_event (EV_A_ fd, revents);
526}
262 527
263static void 528void inline_size
264fd_reify (EV_P) 529fd_reify (EV_P)
265{ 530{
266 int i; 531 int i;
267 532
268 for (i = 0; i < fdchangecnt; ++i) 533 for (i = 0; i < fdchangecnt; ++i)
269 { 534 {
270 int fd = fdchanges [i]; 535 int fd = fdchanges [i];
271 ANFD *anfd = anfds + fd; 536 ANFD *anfd = anfds + fd;
272 struct ev_io *w; 537 ev_io *w;
273 538
274 int events = 0; 539 unsigned char events = 0;
275 540
276 for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) 541 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
277 events |= w->events; 542 events |= (unsigned char)w->events;
278 543
279 anfd->reify = 0; 544#if EV_SELECT_IS_WINSOCKET
280 545 if (events)
281 if (anfd->events != events)
282 { 546 {
283 method_modify (EV_A_ fd, anfd->events, events); 547 unsigned long argp;
284 anfd->events = events; 548 anfd->handle = _get_osfhandle (fd);
549 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
285 } 550 }
551#endif
552
553 {
554 unsigned char o_events = anfd->events;
555 unsigned char o_reify = anfd->reify;
556
557 anfd->reify = 0;
558 anfd->events = events;
559
560 if (o_events != events || o_reify & EV_IOFDSET)
561 backend_modify (EV_A_ fd, o_events, events);
562 }
286 } 563 }
287 564
288 fdchangecnt = 0; 565 fdchangecnt = 0;
289} 566}
290 567
291static void 568void inline_size
292fd_change (EV_P_ int fd) 569fd_change (EV_P_ int fd, int flags)
293{ 570{
294 if (anfds [fd].reify || fdchangecnt < 0) 571 unsigned char reify = anfds [fd].reify;
295 return;
296
297 anfds [fd].reify = 1; 572 anfds [fd].reify |= flags;
298 573
574 if (expect_true (!reify))
575 {
299 ++fdchangecnt; 576 ++fdchangecnt;
300 array_needsize (fdchanges, fdchangemax, fdchangecnt, ); 577 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
301 fdchanges [fdchangecnt - 1] = fd; 578 fdchanges [fdchangecnt - 1] = fd;
579 }
302} 580}
303 581
304static void 582void inline_speed
305fd_kill (EV_P_ int fd) 583fd_kill (EV_P_ int fd)
306{ 584{
307 struct ev_io *w; 585 ev_io *w;
308 586
309 while ((w = (struct ev_io *)anfds [fd].head)) 587 while ((w = (ev_io *)anfds [fd].head))
310 { 588 {
311 ev_io_stop (EV_A_ w); 589 ev_io_stop (EV_A_ w);
312 event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 590 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
313 } 591 }
592}
593
594int inline_size
595fd_valid (int fd)
596{
597#ifdef _WIN32
598 return _get_osfhandle (fd) != -1;
599#else
600 return fcntl (fd, F_GETFD) != -1;
601#endif
314} 602}
315 603
316/* called on EBADF to verify fds */ 604/* called on EBADF to verify fds */
317static void 605static void noinline
318fd_ebadf (EV_P) 606fd_ebadf (EV_P)
319{ 607{
320 int fd; 608 int fd;
321 609
322 for (fd = 0; fd < anfdmax; ++fd) 610 for (fd = 0; fd < anfdmax; ++fd)
323 if (anfds [fd].events) 611 if (anfds [fd].events)
324 if (fcntl (fd, F_GETFD) == -1 && errno == EBADF) 612 if (!fd_valid (fd) == -1 && errno == EBADF)
325 fd_kill (EV_A_ fd); 613 fd_kill (EV_A_ fd);
326} 614}
327 615
328/* called on ENOMEM in select/poll to kill some fds and retry */ 616/* called on ENOMEM in select/poll to kill some fds and retry */
329static void 617static void noinline
330fd_enomem (EV_P) 618fd_enomem (EV_P)
331{ 619{
332 int fd = anfdmax; 620 int fd;
333 621
334 while (fd--) 622 for (fd = anfdmax; fd--; )
335 if (anfds [fd].events) 623 if (anfds [fd].events)
336 { 624 {
337 close (fd);
338 fd_kill (EV_A_ fd); 625 fd_kill (EV_A_ fd);
339 return; 626 return;
340 } 627 }
341} 628}
342 629
343/* susually called after fork if method needs to re-arm all fds from scratch */ 630/* usually called after fork if backend needs to re-arm all fds from scratch */
344static void 631static void noinline
345fd_rearm_all (EV_P) 632fd_rearm_all (EV_P)
346{ 633{
347 int fd; 634 int fd;
348 635
349 /* this should be highly optimised to not do anything but set a flag */
350 for (fd = 0; fd < anfdmax; ++fd) 636 for (fd = 0; fd < anfdmax; ++fd)
351 if (anfds [fd].events) 637 if (anfds [fd].events)
352 { 638 {
353 anfds [fd].events = 0; 639 anfds [fd].events = 0;
354 fd_change (fd); 640 fd_change (EV_A_ fd, EV_IOFDSET | 1);
355 } 641 }
356} 642}
357 643
358/*****************************************************************************/ 644/*****************************************************************************/
359 645
360static void 646void inline_speed
361upheap (WT *heap, int k) 647upheap (WT *heap, int k)
362{ 648{
363 WT w = heap [k]; 649 WT w = heap [k];
364 650
365 while (k && heap [k >> 1]->at > w->at) 651 while (k)
366 { 652 {
653 int p = (k - 1) >> 1;
654
655 if (heap [p]->at <= w->at)
656 break;
657
367 heap [k] = heap [k >> 1]; 658 heap [k] = heap [p];
368 heap [k]->active = k + 1; 659 ((W)heap [k])->active = k + 1;
369 k >>= 1; 660 k = p;
370 } 661 }
371 662
372 heap [k] = w; 663 heap [k] = w;
373 heap [k]->active = k + 1; 664 ((W)heap [k])->active = k + 1;
374
375} 665}
376 666
377static void 667void inline_speed
378downheap (WT *heap, int N, int k) 668downheap (WT *heap, int N, int k)
379{ 669{
380 WT w = heap [k]; 670 WT w = heap [k];
381 671
382 while (k < (N >> 1)) 672 for (;;)
383 { 673 {
384 int j = k << 1; 674 int c = (k << 1) + 1;
385 675
386 if (j + 1 < N && heap [j]->at > heap [j + 1]->at) 676 if (c >= N)
387 ++j;
388
389 if (w->at <= heap [j]->at)
390 break; 677 break;
391 678
679 c += c + 1 < N && heap [c]->at > heap [c + 1]->at
680 ? 1 : 0;
681
682 if (w->at <= heap [c]->at)
683 break;
684
392 heap [k] = heap [j]; 685 heap [k] = heap [c];
393 heap [k]->active = k + 1; 686 ((W)heap [k])->active = k + 1;
687
394 k = j; 688 k = c;
395 } 689 }
396 690
397 heap [k] = w; 691 heap [k] = w;
398 heap [k]->active = k + 1; 692 ((W)heap [k])->active = k + 1;
693}
694
695void inline_size
696adjustheap (WT *heap, int N, int k)
697{
698 upheap (heap, k);
699 downheap (heap, N, k);
399} 700}
400 701
401/*****************************************************************************/ 702/*****************************************************************************/
402 703
403typedef struct 704typedef struct
404{ 705{
405 struct ev_watcher_list *head; 706 WL head;
406 sig_atomic_t volatile gotsig; 707 sig_atomic_t volatile gotsig;
407} ANSIG; 708} ANSIG;
408 709
409static ANSIG *signals; 710static ANSIG *signals;
410static int signalmax; 711static int signalmax;
411 712
412static int sigpipe [2]; 713static int sigpipe [2];
413static sig_atomic_t volatile gotsig; 714static sig_atomic_t volatile gotsig;
414static struct ev_io sigev; 715static ev_io sigev;
415 716
416static void 717void inline_size
417signals_init (ANSIG *base, int count) 718signals_init (ANSIG *base, int count)
418{ 719{
419 while (count--) 720 while (count--)
420 { 721 {
421 base->head = 0; 722 base->head = 0;
… …
426} 727}
427 728
428static void 729static void
429sighandler (int signum) 730sighandler (int signum)
430{ 731{
732#if _WIN32
733 signal (signum, sighandler);
734#endif
735
431 signals [signum - 1].gotsig = 1; 736 signals [signum - 1].gotsig = 1;
432 737
433 if (!gotsig) 738 if (!gotsig)
434 { 739 {
435 int old_errno = errno; 740 int old_errno = errno;
… …
437 write (sigpipe [1], &signum, 1); 742 write (sigpipe [1], &signum, 1);
438 errno = old_errno; 743 errno = old_errno;
439 } 744 }
440} 745}
441 746
747void noinline
748ev_feed_signal_event (EV_P_ int signum)
749{
750 WL w;
751
752#if EV_MULTIPLICITY
753 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
754#endif
755
756 --signum;
757
758 if (signum < 0 || signum >= signalmax)
759 return;
760
761 signals [signum].gotsig = 0;
762
763 for (w = signals [signum].head; w; w = w->next)
764 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
765}
766
442static void 767static void
443sigcb (EV_P_ struct ev_io *iow, int revents) 768sigcb (EV_P_ ev_io *iow, int revents)
444{ 769{
445 struct ev_watcher_list *w;
446 int signum; 770 int signum;
447 771
448 read (sigpipe [0], &revents, 1); 772 read (sigpipe [0], &revents, 1);
449 gotsig = 0; 773 gotsig = 0;
450 774
451 for (signum = signalmax; signum--; ) 775 for (signum = signalmax; signum--; )
452 if (signals [signum].gotsig) 776 if (signals [signum].gotsig)
453 { 777 ev_feed_signal_event (EV_A_ signum + 1);
454 signals [signum].gotsig = 0;
455
456 for (w = signals [signum].head; w; w = w->next)
457 event (EV_A_ (W)w, EV_SIGNAL);
458 }
459} 778}
460 779
461static void 780void inline_speed
781fd_intern (int fd)
782{
783#ifdef _WIN32
784 int arg = 1;
785 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
786#else
787 fcntl (fd, F_SETFD, FD_CLOEXEC);
788 fcntl (fd, F_SETFL, O_NONBLOCK);
789#endif
790}
791
792static void noinline
462siginit (EV_P) 793siginit (EV_P)
463{ 794{
464#ifndef WIN32 795 fd_intern (sigpipe [0]);
465 fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC); 796 fd_intern (sigpipe [1]);
466 fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
467
468 /* rather than sort out wether we really need nb, set it */
469 fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
470 fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
471#endif
472 797
473 ev_io_set (&sigev, sigpipe [0], EV_READ); 798 ev_io_set (&sigev, sigpipe [0], EV_READ);
474 ev_io_start (EV_A_ &sigev); 799 ev_io_start (EV_A_ &sigev);
475 ev_unref (EV_A); /* child watcher should not keep loop alive */ 800 ev_unref (EV_A); /* child watcher should not keep loop alive */
476} 801}
477 802
478/*****************************************************************************/ 803/*****************************************************************************/
479 804
805static WL childs [EV_PID_HASHSIZE];
806
480#ifndef WIN32 807#ifndef _WIN32
481 808
482static struct ev_child *childs [PID_HASHSIZE];
483static struct ev_signal childev; 809static ev_signal childev;
810
811void inline_speed
812child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
813{
814 ev_child *w;
815
816 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
817 if (w->pid == pid || !w->pid)
818 {
819 ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */
820 w->rpid = pid;
821 w->rstatus = status;
822 ev_feed_event (EV_A_ (W)w, EV_CHILD);
823 }
824}
484 825
485#ifndef WCONTINUED 826#ifndef WCONTINUED
486# define WCONTINUED 0 827# define WCONTINUED 0
487#endif 828#endif
488 829
489static void 830static void
490child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
491{
492 struct ev_child *w;
493
494 for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
495 if (w->pid == pid || !w->pid)
496 {
497 w->priority = sw->priority; /* need to do it *now* */
498 w->rpid = pid;
499 w->rstatus = status;
500 event (EV_A_ (W)w, EV_CHILD);
501 }
502}
503
504static void
505childcb (EV_P_ struct ev_signal *sw, int revents) 831childcb (EV_P_ ev_signal *sw, int revents)
506{ 832{
507 int pid, status; 833 int pid, status;
508 834
835 /* some systems define WCONTINUED but then fail to support it (linux 2.4) */
509 if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) 836 if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
510 { 837 if (!WCONTINUED
838 || errno != EINVAL
839 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
840 return;
841
511 /* make sure we are called again until all childs have been reaped */ 842 /* make sure we are called again until all childs have been reaped */
843 /* we need to do it this way so that the callback gets called before we continue */
512 event (EV_A_ (W)sw, EV_SIGNAL); 844 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
513 845
514 child_reap (EV_A_ sw, pid, pid, status); 846 child_reap (EV_A_ sw, pid, pid, status);
847 if (EV_PID_HASHSIZE > 1)
515 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */ 848 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
516 }
517} 849}
518 850
519#endif 851#endif
520 852
521/*****************************************************************************/ 853/*****************************************************************************/
522 854
855#if EV_USE_PORT
856# include "ev_port.c"
857#endif
523#if EV_USE_KQUEUE 858#if EV_USE_KQUEUE
524# include "ev_kqueue.c" 859# include "ev_kqueue.c"
525#endif 860#endif
526#if EV_USE_EPOLL 861#if EV_USE_EPOLL
527# include "ev_epoll.c" 862# include "ev_epoll.c"
… …
544{ 879{
545 return EV_VERSION_MINOR; 880 return EV_VERSION_MINOR;
546} 881}
547 882
548/* return true if we are running with elevated privileges and should ignore env variables */ 883/* return true if we are running with elevated privileges and should ignore env variables */
549static int 884int inline_size
550enable_secure (void) 885enable_secure (void)
551{ 886{
552#ifdef WIN32 887#ifdef _WIN32
553 return 0; 888 return 0;
554#else 889#else
555 return getuid () != geteuid () 890 return getuid () != geteuid ()
556 || getgid () != getegid (); 891 || getgid () != getegid ();
557#endif 892#endif
558} 893}
559 894
560int 895unsigned int
561ev_method (EV_P) 896ev_supported_backends (void)
562{ 897{
563 return method; 898 unsigned int flags = 0;
564}
565 899
566static void 900 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
567loop_init (EV_P_ int methods) 901 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
902 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
903 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
904 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
905
906 return flags;
907}
908
909unsigned int
910ev_recommended_backends (void)
568{ 911{
569 if (!method) 912 unsigned int flags = ev_supported_backends ();
913
914#ifndef __NetBSD__
915 /* kqueue is borked on everything but netbsd apparently */
916 /* it usually doesn't work correctly on anything but sockets and pipes */
917 flags &= ~EVBACKEND_KQUEUE;
918#endif
919#ifdef __APPLE__
920 // flags &= ~EVBACKEND_KQUEUE; for documentation
921 flags &= ~EVBACKEND_POLL;
922#endif
923
924 return flags;
925}
926
927unsigned int
928ev_embeddable_backends (void)
929{
930 return EVBACKEND_EPOLL
931 | EVBACKEND_KQUEUE
932 | EVBACKEND_PORT;
933}
934
935unsigned int
936ev_backend (EV_P)
937{
938 return backend;
939}
940
941unsigned int
942ev_loop_count (EV_P)
943{
944 return loop_count;
945}
946
947static void noinline
948loop_init (EV_P_ unsigned int flags)
949{
950 if (!backend)
570 { 951 {
571#if EV_USE_MONOTONIC 952#if EV_USE_MONOTONIC
572 { 953 {
573 struct timespec ts; 954 struct timespec ts;
574 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 955 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
575 have_monotonic = 1; 956 have_monotonic = 1;
576 } 957 }
577#endif 958#endif
578 959
579 rt_now = ev_time (); 960 ev_rt_now = ev_time ();
580 mn_now = get_clock (); 961 mn_now = get_clock ();
581 now_floor = mn_now; 962 now_floor = mn_now;
582 rtmn_diff = rt_now - mn_now; 963 rtmn_diff = ev_rt_now - mn_now;
583 964
584 if (methods == EVMETHOD_AUTO) 965 /* pid check not overridable via env */
585 if (!enable_secure () && getenv ("LIBEV_METHODS")) 966#ifndef _WIN32
967 if (flags & EVFLAG_FORKCHECK)
968 curpid = getpid ();
969#endif
970
971 if (!(flags & EVFLAG_NOENV)
972 && !enable_secure ()
973 && getenv ("LIBEV_FLAGS"))
586 methods = atoi (getenv ("LIBEV_METHODS")); 974 flags = atoi (getenv ("LIBEV_FLAGS"));
587 else
588 methods = EVMETHOD_ANY;
589 975
590 method = 0; 976 if (!(flags & 0x0000ffffUL))
977 flags |= ev_recommended_backends ();
978
979 backend = 0;
980 backend_fd = -1;
981#if EV_USE_INOTIFY
982 fs_fd = -2;
983#endif
984
985#if EV_USE_PORT
986 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
987#endif
591#if EV_USE_KQUEUE 988#if EV_USE_KQUEUE
592 if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods); 989 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
593#endif 990#endif
594#if EV_USE_EPOLL 991#if EV_USE_EPOLL
595 if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods); 992 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
596#endif 993#endif
597#if EV_USE_POLL 994#if EV_USE_POLL
598 if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods); 995 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
599#endif 996#endif
600#if EV_USE_SELECT 997#if EV_USE_SELECT
601 if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods); 998 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
602#endif 999#endif
603 }
604}
605 1000
606void 1001 ev_init (&sigev, sigcb);
1002 ev_set_priority (&sigev, EV_MAXPRI);
1003 }
1004}
1005
1006static void noinline
607loop_destroy (EV_P) 1007loop_destroy (EV_P)
608{ 1008{
1009 int i;
1010
1011#if EV_USE_INOTIFY
1012 if (fs_fd >= 0)
1013 close (fs_fd);
1014#endif
1015
1016 if (backend_fd >= 0)
1017 close (backend_fd);
1018
1019#if EV_USE_PORT
1020 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1021#endif
609#if EV_USE_KQUEUE 1022#if EV_USE_KQUEUE
610 if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A); 1023 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
611#endif 1024#endif
612#if EV_USE_EPOLL 1025#if EV_USE_EPOLL
613 if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A); 1026 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
614#endif 1027#endif
615#if EV_USE_POLL 1028#if EV_USE_POLL
616 if (method == EVMETHOD_POLL ) poll_destroy (EV_A); 1029 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
617#endif 1030#endif
618#if EV_USE_SELECT 1031#if EV_USE_SELECT
619 if (method == EVMETHOD_SELECT) select_destroy (EV_A); 1032 if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
620#endif 1033#endif
621 1034
622 method = 0; 1035 for (i = NUMPRI; i--; )
623 /*TODO*/ 1036 {
624} 1037 array_free (pending, [i]);
1038#if EV_IDLE_ENABLE
1039 array_free (idle, [i]);
1040#endif
1041 }
625 1042
626void 1043 ev_free (anfds); anfdmax = 0;
1044
1045 /* have to use the microsoft-never-gets-it-right macro */
1046 array_free (fdchange, EMPTY);
1047 array_free (timer, EMPTY);
1048#if EV_PERIODIC_ENABLE
1049 array_free (periodic, EMPTY);
1050#endif
1051#if EV_FORK_ENABLE
1052 array_free (fork, EMPTY);
1053#endif
1054 array_free (prepare, EMPTY);
1055 array_free (check, EMPTY);
1056
1057 backend = 0;
1058}
1059
1060void inline_size infy_fork (EV_P);
1061
1062void inline_size
627loop_fork (EV_P) 1063loop_fork (EV_P)
628{ 1064{
629 /*TODO*/ 1065#if EV_USE_PORT
1066 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1067#endif
1068#if EV_USE_KQUEUE
1069 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
1070#endif
630#if EV_USE_EPOLL 1071#if EV_USE_EPOLL
631 if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A); 1072 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
632#endif 1073#endif
633#if EV_USE_KQUEUE 1074#if EV_USE_INOTIFY
634 if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A); 1075 infy_fork (EV_A);
635#endif 1076#endif
1077
1078 if (ev_is_active (&sigev))
1079 {
1080 /* default loop */
1081
1082 ev_ref (EV_A);
1083 ev_io_stop (EV_A_ &sigev);
1084 close (sigpipe [0]);
1085 close (sigpipe [1]);
1086
1087 while (pipe (sigpipe))
1088 syserr ("(libev) error creating pipe");
1089
1090 siginit (EV_A);
1091 }
1092
1093 postfork = 0;
636} 1094}
637 1095
638#if EV_MULTIPLICITY 1096#if EV_MULTIPLICITY
639struct ev_loop * 1097struct ev_loop *
640ev_loop_new (int methods) 1098ev_loop_new (unsigned int flags)
641{ 1099{
642 struct ev_loop *loop = (struct ev_loop *)calloc (1, sizeof (struct ev_loop)); 1100 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
643 1101
1102 memset (loop, 0, sizeof (struct ev_loop));
1103
644 loop_init (EV_A_ methods); 1104 loop_init (EV_A_ flags);
645 1105
646 if (ev_methods (EV_A)) 1106 if (ev_backend (EV_A))
647 return loop; 1107 return loop;
648 1108
649 return 0; 1109 return 0;
650} 1110}
651 1111
652void 1112void
653ev_loop_destroy (EV_P) 1113ev_loop_destroy (EV_P)
654{ 1114{
655 loop_destroy (EV_A); 1115 loop_destroy (EV_A);
656 free (loop); 1116 ev_free (loop);
657} 1117}
658 1118
659void 1119void
660ev_loop_fork (EV_P) 1120ev_loop_fork (EV_P)
661{ 1121{
662 loop_fork (EV_A); 1122 postfork = 1;
663} 1123}
664 1124
665#endif 1125#endif
666 1126
667#if EV_MULTIPLICITY 1127#if EV_MULTIPLICITY
668struct ev_loop default_loop_struct;
669static struct ev_loop *default_loop;
670
671struct ev_loop * 1128struct ev_loop *
1129ev_default_loop_init (unsigned int flags)
672#else 1130#else
673static int default_loop;
674
675int 1131int
1132ev_default_loop (unsigned int flags)
676#endif 1133#endif
677ev_default_loop (int methods)
678{ 1134{
679 if (sigpipe [0] == sigpipe [1]) 1135 if (sigpipe [0] == sigpipe [1])
680 if (pipe (sigpipe)) 1136 if (pipe (sigpipe))
681 return 0; 1137 return 0;
682 1138
683 if (!default_loop) 1139 if (!ev_default_loop_ptr)
684 { 1140 {
685#if EV_MULTIPLICITY 1141#if EV_MULTIPLICITY
686 struct ev_loop *loop = default_loop = &default_loop_struct; 1142 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
687#else 1143#else
688 default_loop = 1; 1144 ev_default_loop_ptr = 1;
689#endif 1145#endif
690 1146
691 loop_init (EV_A_ methods); 1147 loop_init (EV_A_ flags);
692 1148
693 if (ev_method (EV_A)) 1149 if (ev_backend (EV_A))
694 { 1150 {
695 ev_watcher_init (&sigev, sigcb);
696 ev_set_priority (&sigev, EV_MAXPRI);
697 siginit (EV_A); 1151 siginit (EV_A);
698 1152
699#ifndef WIN32 1153#ifndef _WIN32
700 ev_signal_init (&childev, childcb, SIGCHLD); 1154 ev_signal_init (&childev, childcb, SIGCHLD);
701 ev_set_priority (&childev, EV_MAXPRI); 1155 ev_set_priority (&childev, EV_MAXPRI);
702 ev_signal_start (EV_A_ &childev); 1156 ev_signal_start (EV_A_ &childev);
703 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1157 ev_unref (EV_A); /* child watcher should not keep loop alive */
704#endif 1158#endif
705 } 1159 }
706 else 1160 else
707 default_loop = 0; 1161 ev_default_loop_ptr = 0;
708 } 1162 }
709 1163
710 return default_loop; 1164 return ev_default_loop_ptr;
711} 1165}
712 1166
713void 1167void
714ev_default_destroy (void) 1168ev_default_destroy (void)
715{ 1169{
716#if EV_MULTIPLICITY 1170#if EV_MULTIPLICITY
717 struct ev_loop *loop = default_loop; 1171 struct ev_loop *loop = ev_default_loop_ptr;
718#endif 1172#endif
719 1173
1174#ifndef _WIN32
720 ev_ref (EV_A); /* child watcher */ 1175 ev_ref (EV_A); /* child watcher */
721 ev_signal_stop (EV_A_ &childev); 1176 ev_signal_stop (EV_A_ &childev);
1177#endif
722 1178
723 ev_ref (EV_A); /* signal watcher */ 1179 ev_ref (EV_A); /* signal watcher */
724 ev_io_stop (EV_A_ &sigev); 1180 ev_io_stop (EV_A_ &sigev);
725 1181
726 close (sigpipe [0]); sigpipe [0] = 0; 1182 close (sigpipe [0]); sigpipe [0] = 0;
… …
728 1184
729 loop_destroy (EV_A); 1185 loop_destroy (EV_A);
730} 1186}
731 1187
732void 1188void
733ev_default_fork (EV_P) 1189ev_default_fork (void)
734{ 1190{
735 loop_fork (EV_A); 1191#if EV_MULTIPLICITY
1192 struct ev_loop *loop = ev_default_loop_ptr;
1193#endif
736 1194
737 ev_io_stop (EV_A_ &sigev); 1195 if (backend)
738 close (sigpipe [0]); 1196 postfork = 1;
739 close (sigpipe [1]);
740 pipe (sigpipe);
741
742 ev_ref (EV_A); /* signal watcher */
743 siginit (EV_A);
744} 1197}
745 1198
746/*****************************************************************************/ 1199/*****************************************************************************/
747 1200
748static void 1201void
1202ev_invoke (EV_P_ void *w, int revents)
1203{
1204 EV_CB_INVOKE ((W)w, revents);
1205}
1206
1207void inline_speed
749call_pending (EV_P) 1208call_pending (EV_P)
750{ 1209{
751 int pri; 1210 int pri;
752 1211
753 for (pri = NUMPRI; pri--; ) 1212 for (pri = NUMPRI; pri--; )
754 while (pendingcnt [pri]) 1213 while (pendingcnt [pri])
755 { 1214 {
756 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 1215 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
757 1216
758 if (p->w) 1217 if (expect_true (p->w))
759 { 1218 {
1219 /*assert (("non-pending watcher on pending list", p->w->pending));*/
1220
760 p->w->pending = 0; 1221 p->w->pending = 0;
761 p->w->cb (EV_A_ p->w, p->events); 1222 EV_CB_INVOKE (p->w, p->events);
762 } 1223 }
763 } 1224 }
764} 1225}
765 1226
766static void 1227void inline_size
767timers_reify (EV_P) 1228timers_reify (EV_P)
768{ 1229{
769 while (timercnt && timers [0]->at <= mn_now) 1230 while (timercnt && ((WT)timers [0])->at <= mn_now)
770 { 1231 {
771 struct ev_timer *w = timers [0]; 1232 ev_timer *w = (ev_timer *)timers [0];
1233
1234 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
772 1235
773 /* first reschedule or stop timer */ 1236 /* first reschedule or stop timer */
774 if (w->repeat) 1237 if (w->repeat)
775 { 1238 {
776 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 1239 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1240
777 w->at = mn_now + w->repeat; 1241 ((WT)w)->at += w->repeat;
1242 if (((WT)w)->at < mn_now)
1243 ((WT)w)->at = mn_now;
1244
778 downheap ((WT *)timers, timercnt, 0); 1245 downheap (timers, timercnt, 0);
779 } 1246 }
780 else 1247 else
781 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ 1248 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
782 1249
783 event (EV_A_ (W)w, EV_TIMEOUT); 1250 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
784 } 1251 }
785} 1252}
786 1253
787static void 1254#if EV_PERIODIC_ENABLE
1255void inline_size
788periodics_reify (EV_P) 1256periodics_reify (EV_P)
789{ 1257{
790 while (periodiccnt && periodics [0]->at <= rt_now) 1258 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
791 { 1259 {
792 struct ev_periodic *w = periodics [0]; 1260 ev_periodic *w = (ev_periodic *)periodics [0];
1261
1262 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
793 1263
794 /* first reschedule or stop timer */ 1264 /* first reschedule or stop timer */
795 if (w->interval) 1265 if (w->reschedule_cb)
796 { 1266 {
1267 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1268 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1269 downheap (periodics, periodiccnt, 0);
1270 }
1271 else if (w->interval)
1272 {
797 w->at += floor ((rt_now - w->at) / w->interval + 1.) * w->interval; 1273 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1274 if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
798 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > rt_now)); 1275 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
799 downheap ((WT *)periodics, periodiccnt, 0); 1276 downheap (periodics, periodiccnt, 0);
800 } 1277 }
801 else 1278 else
802 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 1279 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
803 1280
804 event (EV_A_ (W)w, EV_PERIODIC); 1281 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
805 } 1282 }
806} 1283}
807 1284
808static void 1285static void noinline
809periodics_reschedule (EV_P) 1286periodics_reschedule (EV_P)
810{ 1287{
811 int i; 1288 int i;
812 1289
813 /* adjust periodics after time jump */ 1290 /* adjust periodics after time jump */
814 for (i = 0; i < periodiccnt; ++i) 1291 for (i = 0; i < periodiccnt; ++i)
815 { 1292 {
816 struct ev_periodic *w = periodics [i]; 1293 ev_periodic *w = (ev_periodic *)periodics [i];
817 1294
1295 if (w->reschedule_cb)
1296 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
818 if (w->interval) 1297 else if (w->interval)
1298 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1299 }
1300
1301 /* now rebuild the heap */
1302 for (i = periodiccnt >> 1; i--; )
1303 downheap (periodics, periodiccnt, i);
1304}
1305#endif
1306
1307#if EV_IDLE_ENABLE
1308void inline_size
1309idle_reify (EV_P)
1310{
1311 if (expect_false (idleall))
1312 {
1313 int pri;
1314
1315 for (pri = NUMPRI; pri--; )
819 { 1316 {
820 ev_tstamp diff = ceil ((rt_now - w->at) / w->interval) * w->interval; 1317 if (pendingcnt [pri])
1318 break;
821 1319
822 if (fabs (diff) >= 1e-4) 1320 if (idlecnt [pri])
823 { 1321 {
824 ev_periodic_stop (EV_A_ w); 1322 queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
825 ev_periodic_start (EV_A_ w); 1323 break;
826
827 i = 0; /* restart loop, inefficient, but time jumps should be rare */
828 } 1324 }
829 } 1325 }
830 } 1326 }
831} 1327}
1328#endif
832 1329
833inline int 1330void inline_speed
834time_update_monotonic (EV_P) 1331time_update (EV_P_ ev_tstamp max_block)
835{
836 mn_now = get_clock ();
837
838 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
839 {
840 rt_now = rtmn_diff + mn_now;
841 return 0;
842 }
843 else
844 {
845 now_floor = mn_now;
846 rt_now = ev_time ();
847 return 1;
848 }
849}
850
851static void
852time_update (EV_P)
853{ 1332{
854 int i; 1333 int i;
855 1334
856#if EV_USE_MONOTONIC 1335#if EV_USE_MONOTONIC
857 if (expect_true (have_monotonic)) 1336 if (expect_true (have_monotonic))
858 { 1337 {
859 if (time_update_monotonic (EV_A)) 1338 ev_tstamp odiff = rtmn_diff;
1339
1340 mn_now = get_clock ();
1341
1342 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
1343 /* interpolate in the meantime */
1344 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
860 { 1345 {
861 ev_tstamp odiff = rtmn_diff; 1346 ev_rt_now = rtmn_diff + mn_now;
1347 return;
1348 }
862 1349
1350 now_floor = mn_now;
1351 ev_rt_now = ev_time ();
1352
863 for (i = 4; --i; ) /* loop a few times, before making important decisions */ 1353 /* loop a few times, before making important decisions.
1354 * on the choice of "4": one iteration isn't enough,
1355 * in case we get preempted during the calls to
1356 * ev_time and get_clock. a second call is almost guaranteed
1357 * to succeed in that case, though. and looping a few more times
1358 * doesn't hurt either as we only do this on time-jumps or
1359 * in the unlikely event of having been preempted here.
1360 */
1361 for (i = 4; --i; )
864 { 1362 {
865 rtmn_diff = rt_now - mn_now; 1363 rtmn_diff = ev_rt_now - mn_now;
866 1364
867 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) 1365 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
868 return; /* all is well */ 1366 return; /* all is well */
869 1367
870 rt_now = ev_time (); 1368 ev_rt_now = ev_time ();
871 mn_now = get_clock (); 1369 mn_now = get_clock ();
872 now_floor = mn_now; 1370 now_floor = mn_now;
873 } 1371 }
874 1372
1373# if EV_PERIODIC_ENABLE
1374 periodics_reschedule (EV_A);
1375# endif
1376 /* no timer adjustment, as the monotonic clock doesn't jump */
1377 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1378 }
1379 else
1380#endif
1381 {
1382 ev_rt_now = ev_time ();
1383
1384 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1385 {
1386#if EV_PERIODIC_ENABLE
875 periodics_reschedule (EV_A); 1387 periodics_reschedule (EV_A);
876 /* no timer adjustment, as the monotonic clock doesn't jump */ 1388#endif
877 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */ 1389 /* adjust timers. this is easy, as the offset is the same for all of them */
1390 for (i = 0; i < timercnt; ++i)
1391 ((WT)timers [i])->at += ev_rt_now - mn_now;
878 } 1392 }
879 }
880 else
881#endif
882 {
883 rt_now = ev_time ();
884 1393
885 if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
886 {
887 periodics_reschedule (EV_A);
888
889 /* adjust timers. this is easy, as the offset is the same for all */
890 for (i = 0; i < timercnt; ++i)
891 timers [i]->at += rt_now - mn_now;
892 }
893
894 mn_now = rt_now; 1394 mn_now = ev_rt_now;
895 } 1395 }
896} 1396}
897 1397
898void 1398void
899ev_ref (EV_P) 1399ev_ref (EV_P)
… …
910static int loop_done; 1410static int loop_done;
911 1411
912void 1412void
913ev_loop (EV_P_ int flags) 1413ev_loop (EV_P_ int flags)
914{ 1414{
915 double block;
916 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0; 1415 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
1416 ? EVUNLOOP_ONE
1417 : EVUNLOOP_CANCEL;
1418
1419 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
917 1420
918 do 1421 do
919 { 1422 {
1423#ifndef _WIN32
1424 if (expect_false (curpid)) /* penalise the forking check even more */
1425 if (expect_false (getpid () != curpid))
1426 {
1427 curpid = getpid ();
1428 postfork = 1;
1429 }
1430#endif
1431
1432#if EV_FORK_ENABLE
1433 /* we might have forked, so queue fork handlers */
1434 if (expect_false (postfork))
1435 if (forkcnt)
1436 {
1437 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1438 call_pending (EV_A);
1439 }
1440#endif
1441
920 /* queue check watchers (and execute them) */ 1442 /* queue prepare watchers (and execute them) */
921 if (expect_false (preparecnt)) 1443 if (expect_false (preparecnt))
922 { 1444 {
923 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 1445 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
924 call_pending (EV_A); 1446 call_pending (EV_A);
925 } 1447 }
926 1448
1449 if (expect_false (!activecnt))
1450 break;
1451
1452 /* we might have forked, so reify kernel state if necessary */
1453 if (expect_false (postfork))
1454 loop_fork (EV_A);
1455
927 /* update fd-related kernel structures */ 1456 /* update fd-related kernel structures */
928 fd_reify (EV_A); 1457 fd_reify (EV_A);
929 1458
930 /* calculate blocking time */ 1459 /* calculate blocking time */
1460 {
1461 ev_tstamp block;
931 1462
932 /* we only need this for !monotonic clockor timers, but as we basically 1463 if (expect_false (flags & EVLOOP_NONBLOCK || idleall || !activecnt))
933 always have timers, we just calculate it always */ 1464 block = 0.; /* do not block at all */
934#if EV_USE_MONOTONIC
935 if (expect_true (have_monotonic))
936 time_update_monotonic (EV_A);
937 else 1465 else
938#endif
939 { 1466 {
940 rt_now = ev_time (); 1467 /* update time to cancel out callback processing overhead */
941 mn_now = rt_now; 1468 time_update (EV_A_ 1e100);
942 }
943 1469
944 if (flags & EVLOOP_NONBLOCK || idlecnt)
945 block = 0.;
946 else
947 {
948 block = MAX_BLOCKTIME; 1470 block = MAX_BLOCKTIME;
949 1471
950 if (timercnt) 1472 if (timercnt)
951 { 1473 {
952 ev_tstamp to = timers [0]->at - mn_now + method_fudge; 1474 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
953 if (block > to) block = to; 1475 if (block > to) block = to;
954 } 1476 }
955 1477
1478#if EV_PERIODIC_ENABLE
956 if (periodiccnt) 1479 if (periodiccnt)
957 { 1480 {
958 ev_tstamp to = periodics [0]->at - rt_now + method_fudge; 1481 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
959 if (block > to) block = to; 1482 if (block > to) block = to;
960 } 1483 }
1484#endif
961 1485
962 if (block < 0.) block = 0.; 1486 if (expect_false (block < 0.)) block = 0.;
963 } 1487 }
964 1488
1489 ++loop_count;
965 method_poll (EV_A_ block); 1490 backend_poll (EV_A_ block);
966 1491
967 /* update rt_now, do magic */ 1492 /* update ev_rt_now, do magic */
968 time_update (EV_A); 1493 time_update (EV_A_ block);
1494 }
969 1495
970 /* queue pending timers and reschedule them */ 1496 /* queue pending timers and reschedule them */
971 timers_reify (EV_A); /* relative timers called last */ 1497 timers_reify (EV_A); /* relative timers called last */
1498#if EV_PERIODIC_ENABLE
972 periodics_reify (EV_A); /* absolute timers called first */ 1499 periodics_reify (EV_A); /* absolute timers called first */
1500#endif
973 1501
1502#if EV_IDLE_ENABLE
974 /* queue idle watchers unless io or timers are pending */ 1503 /* queue idle watchers unless other events are pending */
975 if (!pendingcnt) 1504 idle_reify (EV_A);
976 queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); 1505#endif
977 1506
978 /* queue check watchers, to be executed first */ 1507 /* queue check watchers, to be executed first */
979 if (checkcnt) 1508 if (expect_false (checkcnt))
980 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 1509 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
981 1510
982 call_pending (EV_A); 1511 call_pending (EV_A);
1512
983 } 1513 }
984 while (activecnt && !loop_done); 1514 while (expect_true (activecnt && !loop_done));
985 1515
986 if (loop_done != 2) 1516 if (loop_done == EVUNLOOP_ONE)
987 loop_done = 0; 1517 loop_done = EVUNLOOP_CANCEL;
988} 1518}
989 1519
990void 1520void
991ev_unloop (EV_P_ int how) 1521ev_unloop (EV_P_ int how)
992{ 1522{
993 loop_done = how; 1523 loop_done = how;
994} 1524}
995 1525
996/*****************************************************************************/ 1526/*****************************************************************************/
997 1527
998inline void 1528void inline_size
999wlist_add (WL *head, WL elem) 1529wlist_add (WL *head, WL elem)
1000{ 1530{
1001 elem->next = *head; 1531 elem->next = *head;
1002 *head = elem; 1532 *head = elem;
1003} 1533}
1004 1534
1005inline void 1535void inline_size
1006wlist_del (WL *head, WL elem) 1536wlist_del (WL *head, WL elem)
1007{ 1537{
1008 while (*head) 1538 while (*head)
1009 { 1539 {
1010 if (*head == elem) 1540 if (*head == elem)
… …
1015 1545
1016 head = &(*head)->next; 1546 head = &(*head)->next;
1017 } 1547 }
1018} 1548}
1019 1549
1020inline void 1550void inline_speed
1021ev_clear_pending (EV_P_ W w) 1551clear_pending (EV_P_ W w)
1022{ 1552{
1023 if (w->pending) 1553 if (w->pending)
1024 { 1554 {
1025 pendings [ABSPRI (w)][w->pending - 1].w = 0; 1555 pendings [ABSPRI (w)][w->pending - 1].w = 0;
1026 w->pending = 0; 1556 w->pending = 0;
1027 } 1557 }
1028} 1558}
1029 1559
1030inline void 1560int
1561ev_clear_pending (EV_P_ void *w)
1562{
1563 W w_ = (W)w;
1564 int pending = w_->pending;
1565
1566 if (expect_true (pending))
1567 {
1568 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
1569 w_->pending = 0;
1570 p->w = 0;
1571 return p->events;
1572 }
1573 else
1574 return 0;
1575}
1576
1577void inline_size
1578pri_adjust (EV_P_ W w)
1579{
1580 int pri = w->priority;
1581 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1582 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1583 w->priority = pri;
1584}
1585
1586void inline_speed
1031ev_start (EV_P_ W w, int active) 1587ev_start (EV_P_ W w, int active)
1032{ 1588{
1033 if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; 1589 pri_adjust (EV_A_ w);
1034 if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1035
1036 w->active = active; 1590 w->active = active;
1037 ev_ref (EV_A); 1591 ev_ref (EV_A);
1038} 1592}
1039 1593
1040inline void 1594void inline_size
1041ev_stop (EV_P_ W w) 1595ev_stop (EV_P_ W w)
1042{ 1596{
1043 ev_unref (EV_A); 1597 ev_unref (EV_A);
1044 w->active = 0; 1598 w->active = 0;
1045} 1599}
1046 1600
1047/*****************************************************************************/ 1601/*****************************************************************************/
1048 1602
1049void 1603void noinline
1050ev_io_start (EV_P_ struct ev_io *w) 1604ev_io_start (EV_P_ ev_io *w)
1051{ 1605{
1052 int fd = w->fd; 1606 int fd = w->fd;
1053 1607
1054 if (ev_is_active (w)) 1608 if (expect_false (ev_is_active (w)))
1055 return; 1609 return;
1056 1610
1057 assert (("ev_io_start called with negative fd", fd >= 0)); 1611 assert (("ev_io_start called with negative fd", fd >= 0));
1058 1612
1059 ev_start (EV_A_ (W)w, 1); 1613 ev_start (EV_A_ (W)w, 1);
1060 array_needsize (anfds, anfdmax, fd + 1, anfds_init); 1614 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1061 wlist_add ((WL *)&anfds[fd].head, (WL)w); 1615 wlist_add (&anfds[fd].head, (WL)w);
1062 1616
1063 fd_change (EV_A_ fd); 1617 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);
1618 w->events &= ~EV_IOFDSET;
1064} 1619}
1065 1620
1066void 1621void noinline
1067ev_io_stop (EV_P_ struct ev_io *w) 1622ev_io_stop (EV_P_ ev_io *w)
1068{ 1623{
1069 ev_clear_pending (EV_A_ (W)w); 1624 clear_pending (EV_A_ (W)w);
1070 if (!ev_is_active (w)) 1625 if (expect_false (!ev_is_active (w)))
1071 return; 1626 return;
1072 1627
1628 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1629
1073 wlist_del ((WL *)&anfds[w->fd].head, (WL)w); 1630 wlist_del (&anfds[w->fd].head, (WL)w);
1074 ev_stop (EV_A_ (W)w); 1631 ev_stop (EV_A_ (W)w);
1075 1632
1076 fd_change (EV_A_ w->fd); 1633 fd_change (EV_A_ w->fd, 1);
1077} 1634}
1078 1635
1079void 1636void noinline
1080ev_timer_start (EV_P_ struct ev_timer *w) 1637ev_timer_start (EV_P_ ev_timer *w)
1081{ 1638{
1082 if (ev_is_active (w)) 1639 if (expect_false (ev_is_active (w)))
1083 return; 1640 return;
1084 1641
1085 w->at += mn_now; 1642 ((WT)w)->at += mn_now;
1086 1643
1087 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 1644 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1088 1645
1089 ev_start (EV_A_ (W)w, ++timercnt); 1646 ev_start (EV_A_ (W)w, ++timercnt);
1090 array_needsize (timers, timermax, timercnt, ); 1647 array_needsize (WT, timers, timermax, timercnt, EMPTY2);
1091 timers [timercnt - 1] = w; 1648 timers [timercnt - 1] = (WT)w;
1092 upheap ((WT *)timers, timercnt - 1); 1649 upheap (timers, timercnt - 1);
1093}
1094 1650
1095void 1651 /*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
1652}
1653
1654void noinline
1096ev_timer_stop (EV_P_ struct ev_timer *w) 1655ev_timer_stop (EV_P_ ev_timer *w)
1097{ 1656{
1098 ev_clear_pending (EV_A_ (W)w); 1657 clear_pending (EV_A_ (W)w);
1099 if (!ev_is_active (w)) 1658 if (expect_false (!ev_is_active (w)))
1100 return; 1659 return;
1101 1660
1102 if (w->active < timercnt--) 1661 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w));
1662
1663 {
1664 int active = ((W)w)->active;
1665
1666 if (expect_true (--active < --timercnt))
1103 { 1667 {
1104 timers [w->active - 1] = timers [timercnt]; 1668 timers [active] = timers [timercnt];
1105 downheap ((WT *)timers, timercnt, w->active - 1); 1669 adjustheap (timers, timercnt, active);
1106 } 1670 }
1671 }
1107 1672
1108 w->at = w->repeat; 1673 ((WT)w)->at -= mn_now;
1109 1674
1110 ev_stop (EV_A_ (W)w); 1675 ev_stop (EV_A_ (W)w);
1111} 1676}
1112 1677
1113void 1678void noinline
1114ev_timer_again (EV_P_ struct ev_timer *w) 1679ev_timer_again (EV_P_ ev_timer *w)
1115{ 1680{
1116 if (ev_is_active (w)) 1681 if (ev_is_active (w))
1117 { 1682 {
1118 if (w->repeat) 1683 if (w->repeat)
1119 { 1684 {
1120 w->at = mn_now + w->repeat; 1685 ((WT)w)->at = mn_now + w->repeat;
1121 downheap ((WT *)timers, timercnt, w->active - 1); 1686 adjustheap (timers, timercnt, ((W)w)->active - 1);
1122 } 1687 }
1123 else 1688 else
1124 ev_timer_stop (EV_A_ w); 1689 ev_timer_stop (EV_A_ w);
1125 } 1690 }
1126 else if (w->repeat) 1691 else if (w->repeat)
1692 {
1693 w->at = w->repeat;
1127 ev_timer_start (EV_A_ w); 1694 ev_timer_start (EV_A_ w);
1695 }
1128} 1696}
1129 1697
1130void 1698#if EV_PERIODIC_ENABLE
1699void noinline
1131ev_periodic_start (EV_P_ struct ev_periodic *w) 1700ev_periodic_start (EV_P_ ev_periodic *w)
1132{ 1701{
1133 if (ev_is_active (w)) 1702 if (expect_false (ev_is_active (w)))
1134 return; 1703 return;
1135 1704
1705 if (w->reschedule_cb)
1706 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1707 else if (w->interval)
1708 {
1136 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 1709 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1137
1138 /* this formula differs from the one in periodic_reify because we do not always round up */ 1710 /* this formula differs from the one in periodic_reify because we do not always round up */
1139 if (w->interval)
1140 w->at += ceil ((rt_now - w->at) / w->interval) * w->interval; 1711 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1712 }
1713 else
1714 ((WT)w)->at = w->offset;
1141 1715
1142 ev_start (EV_A_ (W)w, ++periodiccnt); 1716 ev_start (EV_A_ (W)w, ++periodiccnt);
1143 array_needsize (periodics, periodicmax, periodiccnt, ); 1717 array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2);
1144 periodics [periodiccnt - 1] = w; 1718 periodics [periodiccnt - 1] = (WT)w;
1145 upheap ((WT *)periodics, periodiccnt - 1); 1719 upheap (periodics, periodiccnt - 1);
1146}
1147 1720
1148void 1721 /*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
1722}
1723
1724void noinline
1149ev_periodic_stop (EV_P_ struct ev_periodic *w) 1725ev_periodic_stop (EV_P_ ev_periodic *w)
1150{ 1726{
1151 ev_clear_pending (EV_A_ (W)w); 1727 clear_pending (EV_A_ (W)w);
1152 if (!ev_is_active (w)) 1728 if (expect_false (!ev_is_active (w)))
1153 return; 1729 return;
1154 1730
1155 if (w->active < periodiccnt--) 1731 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w));
1732
1733 {
1734 int active = ((W)w)->active;
1735
1736 if (expect_true (--active < --periodiccnt))
1156 { 1737 {
1157 periodics [w->active - 1] = periodics [periodiccnt]; 1738 periodics [active] = periodics [periodiccnt];
1158 downheap ((WT *)periodics, periodiccnt, w->active - 1); 1739 adjustheap (periodics, periodiccnt, active);
1159 } 1740 }
1741 }
1160 1742
1161 ev_stop (EV_A_ (W)w); 1743 ev_stop (EV_A_ (W)w);
1162} 1744}
1163 1745
1164void 1746void noinline
1165ev_idle_start (EV_P_ struct ev_idle *w) 1747ev_periodic_again (EV_P_ ev_periodic *w)
1166{ 1748{
1167 if (ev_is_active (w)) 1749 /* TODO: use adjustheap and recalculation */
1168 return;
1169
1170 ev_start (EV_A_ (W)w, ++idlecnt);
1171 array_needsize (idles, idlemax, idlecnt, );
1172 idles [idlecnt - 1] = w;
1173}
1174
1175void
1176ev_idle_stop (EV_P_ struct ev_idle *w)
1177{
1178 ev_clear_pending (EV_A_ (W)w);
1179 if (ev_is_active (w))
1180 return;
1181
1182 idles [w->active - 1] = idles [--idlecnt];
1183 ev_stop (EV_A_ (W)w); 1750 ev_periodic_stop (EV_A_ w);
1751 ev_periodic_start (EV_A_ w);
1184} 1752}
1185 1753#endif
1186void
1187ev_prepare_start (EV_P_ struct ev_prepare *w)
1188{
1189 if (ev_is_active (w))
1190 return;
1191
1192 ev_start (EV_A_ (W)w, ++preparecnt);
1193 array_needsize (prepares, preparemax, preparecnt, );
1194 prepares [preparecnt - 1] = w;
1195}
1196
1197void
1198ev_prepare_stop (EV_P_ struct ev_prepare *w)
1199{
1200 ev_clear_pending (EV_A_ (W)w);
1201 if (ev_is_active (w))
1202 return;
1203
1204 prepares [w->active - 1] = prepares [--preparecnt];
1205 ev_stop (EV_A_ (W)w);
1206}
1207
1208void
1209ev_check_start (EV_P_ struct ev_check *w)
1210{
1211 if (ev_is_active (w))
1212 return;
1213
1214 ev_start (EV_A_ (W)w, ++checkcnt);
1215 array_needsize (checks, checkmax, checkcnt, );
1216 checks [checkcnt - 1] = w;
1217}
1218
1219void
1220ev_check_stop (EV_P_ struct ev_check *w)
1221{
1222 ev_clear_pending (EV_A_ (W)w);
1223 if (ev_is_active (w))
1224 return;
1225
1226 checks [w->active - 1] = checks [--checkcnt];
1227 ev_stop (EV_A_ (W)w);
1228}
1229 1754
1230#ifndef SA_RESTART 1755#ifndef SA_RESTART
1231# define SA_RESTART 0 1756# define SA_RESTART 0
1232#endif 1757#endif
1233 1758
1234void 1759void noinline
1235ev_signal_start (EV_P_ struct ev_signal *w) 1760ev_signal_start (EV_P_ ev_signal *w)
1236{ 1761{
1237#if EV_MULTIPLICITY 1762#if EV_MULTIPLICITY
1238 assert (("signal watchers are only supported in the default loop", loop == default_loop)); 1763 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1239#endif 1764#endif
1240 if (ev_is_active (w)) 1765 if (expect_false (ev_is_active (w)))
1241 return; 1766 return;
1242 1767
1243 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 1768 assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1244 1769
1770 {
1771#ifndef _WIN32
1772 sigset_t full, prev;
1773 sigfillset (&full);
1774 sigprocmask (SIG_SETMASK, &full, &prev);
1775#endif
1776
1777 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1778
1779#ifndef _WIN32
1780 sigprocmask (SIG_SETMASK, &prev, 0);
1781#endif
1782 }
1783
1245 ev_start (EV_A_ (W)w, 1); 1784 ev_start (EV_A_ (W)w, 1);
1246 array_needsize (signals, signalmax, w->signum, signals_init);
1247 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); 1785 wlist_add (&signals [w->signum - 1].head, (WL)w);
1248 1786
1249 if (!w->next) 1787 if (!((WL)w)->next)
1250 { 1788 {
1789#if _WIN32
1790 signal (w->signum, sighandler);
1791#else
1251 struct sigaction sa; 1792 struct sigaction sa;
1252 sa.sa_handler = sighandler; 1793 sa.sa_handler = sighandler;
1253 sigfillset (&sa.sa_mask); 1794 sigfillset (&sa.sa_mask);
1254 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 1795 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1255 sigaction (w->signum, &sa, 0); 1796 sigaction (w->signum, &sa, 0);
1797#endif
1256 } 1798 }
1257} 1799}
1258 1800
1259void 1801void noinline
1260ev_signal_stop (EV_P_ struct ev_signal *w) 1802ev_signal_stop (EV_P_ ev_signal *w)
1261{ 1803{
1262 ev_clear_pending (EV_A_ (W)w); 1804 clear_pending (EV_A_ (W)w);
1263 if (!ev_is_active (w)) 1805 if (expect_false (!ev_is_active (w)))
1264 return; 1806 return;
1265 1807
1266 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); 1808 wlist_del (&signals [w->signum - 1].head, (WL)w);
1267 ev_stop (EV_A_ (W)w); 1809 ev_stop (EV_A_ (W)w);
1268 1810
1269 if (!signals [w->signum - 1].head) 1811 if (!signals [w->signum - 1].head)
1270 signal (w->signum, SIG_DFL); 1812 signal (w->signum, SIG_DFL);
1271} 1813}
1272 1814
1273void 1815void
1274ev_child_start (EV_P_ struct ev_child *w) 1816ev_child_start (EV_P_ ev_child *w)
1275{ 1817{
1276#if EV_MULTIPLICITY 1818#if EV_MULTIPLICITY
1277 assert (("child watchers are only supported in the default loop", loop == default_loop)); 1819 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1278#endif 1820#endif
1279 if (ev_is_active (w)) 1821 if (expect_false (ev_is_active (w)))
1280 return; 1822 return;
1281 1823
1282 ev_start (EV_A_ (W)w, 1); 1824 ev_start (EV_A_ (W)w, 1);
1283 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1825 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1284} 1826}
1285 1827
1286void 1828void
1287ev_child_stop (EV_P_ struct ev_child *w) 1829ev_child_stop (EV_P_ ev_child *w)
1288{ 1830{
1289 ev_clear_pending (EV_A_ (W)w); 1831 clear_pending (EV_A_ (W)w);
1290 if (ev_is_active (w)) 1832 if (expect_false (!ev_is_active (w)))
1291 return; 1833 return;
1292 1834
1293 wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1835 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1294 ev_stop (EV_A_ (W)w); 1836 ev_stop (EV_A_ (W)w);
1295} 1837}
1296 1838
1839#if EV_STAT_ENABLE
1840
1841# ifdef _WIN32
1842# undef lstat
1843# define lstat(a,b) _stati64 (a,b)
1844# endif
1845
1846#define DEF_STAT_INTERVAL 5.0074891
1847#define MIN_STAT_INTERVAL 0.1074891
1848
1849static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
1850
1851#if EV_USE_INOTIFY
1852# define EV_INOTIFY_BUFSIZE 8192
1853
1854static void noinline
1855infy_add (EV_P_ ev_stat *w)
1856{
1857 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD);
1858
1859 if (w->wd < 0)
1860 {
1861 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
1862
1863 /* monitor some parent directory for speedup hints */
1864 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
1865 {
1866 char path [4096];
1867 strcpy (path, w->path);
1868
1869 do
1870 {
1871 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
1872 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
1873
1874 char *pend = strrchr (path, '/');
1875
1876 if (!pend)
1877 break; /* whoops, no '/', complain to your admin */
1878
1879 *pend = 0;
1880 w->wd = inotify_add_watch (fs_fd, path, mask);
1881 }
1882 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
1883 }
1884 }
1885 else
1886 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
1887
1888 if (w->wd >= 0)
1889 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
1890}
1891
1892static void noinline
1893infy_del (EV_P_ ev_stat *w)
1894{
1895 int slot;
1896 int wd = w->wd;
1897
1898 if (wd < 0)
1899 return;
1900
1901 w->wd = -2;
1902 slot = wd & (EV_INOTIFY_HASHSIZE - 1);
1903 wlist_del (&fs_hash [slot].head, (WL)w);
1904
1905 /* remove this watcher, if others are watching it, they will rearm */
1906 inotify_rm_watch (fs_fd, wd);
1907}
1908
1909static void noinline
1910infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
1911{
1912 if (slot < 0)
1913 /* overflow, need to check for all hahs slots */
1914 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
1915 infy_wd (EV_A_ slot, wd, ev);
1916 else
1917 {
1918 WL w_;
1919
1920 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
1921 {
1922 ev_stat *w = (ev_stat *)w_;
1923 w_ = w_->next; /* lets us remove this watcher and all before it */
1924
1925 if (w->wd == wd || wd == -1)
1926 {
1927 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
1928 {
1929 w->wd = -1;
1930 infy_add (EV_A_ w); /* re-add, no matter what */
1931 }
1932
1933 stat_timer_cb (EV_A_ &w->timer, 0);
1934 }
1935 }
1936 }
1937}
1938
1939static void
1940infy_cb (EV_P_ ev_io *w, int revents)
1941{
1942 char buf [EV_INOTIFY_BUFSIZE];
1943 struct inotify_event *ev = (struct inotify_event *)buf;
1944 int ofs;
1945 int len = read (fs_fd, buf, sizeof (buf));
1946
1947 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
1948 infy_wd (EV_A_ ev->wd, ev->wd, ev);
1949}
1950
1951void inline_size
1952infy_init (EV_P)
1953{
1954 if (fs_fd != -2)
1955 return;
1956
1957 fs_fd = inotify_init ();
1958
1959 if (fs_fd >= 0)
1960 {
1961 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
1962 ev_set_priority (&fs_w, EV_MAXPRI);
1963 ev_io_start (EV_A_ &fs_w);
1964 }
1965}
1966
1967void inline_size
1968infy_fork (EV_P)
1969{
1970 int slot;
1971
1972 if (fs_fd < 0)
1973 return;
1974
1975 close (fs_fd);
1976 fs_fd = inotify_init ();
1977
1978 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
1979 {
1980 WL w_ = fs_hash [slot].head;
1981 fs_hash [slot].head = 0;
1982
1983 while (w_)
1984 {
1985 ev_stat *w = (ev_stat *)w_;
1986 w_ = w_->next; /* lets us add this watcher */
1987
1988 w->wd = -1;
1989
1990 if (fs_fd >= 0)
1991 infy_add (EV_A_ w); /* re-add, no matter what */
1992 else
1993 ev_timer_start (EV_A_ &w->timer);
1994 }
1995
1996 }
1997}
1998
1999#endif
2000
2001void
2002ev_stat_stat (EV_P_ ev_stat *w)
2003{
2004 if (lstat (w->path, &w->attr) < 0)
2005 w->attr.st_nlink = 0;
2006 else if (!w->attr.st_nlink)
2007 w->attr.st_nlink = 1;
2008}
2009
2010static void noinline
2011stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2012{
2013 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2014
2015 /* we copy this here each the time so that */
2016 /* prev has the old value when the callback gets invoked */
2017 w->prev = w->attr;
2018 ev_stat_stat (EV_A_ w);
2019
2020 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2021 if (
2022 w->prev.st_dev != w->attr.st_dev
2023 || w->prev.st_ino != w->attr.st_ino
2024 || w->prev.st_mode != w->attr.st_mode
2025 || w->prev.st_nlink != w->attr.st_nlink
2026 || w->prev.st_uid != w->attr.st_uid
2027 || w->prev.st_gid != w->attr.st_gid
2028 || w->prev.st_rdev != w->attr.st_rdev
2029 || w->prev.st_size != w->attr.st_size
2030 || w->prev.st_atime != w->attr.st_atime
2031 || w->prev.st_mtime != w->attr.st_mtime
2032 || w->prev.st_ctime != w->attr.st_ctime
2033 ) {
2034 #if EV_USE_INOTIFY
2035 infy_del (EV_A_ w);
2036 infy_add (EV_A_ w);
2037 ev_stat_stat (EV_A_ w); /* avoid race... */
2038 #endif
2039
2040 ev_feed_event (EV_A_ w, EV_STAT);
2041 }
2042}
2043
2044void
2045ev_stat_start (EV_P_ ev_stat *w)
2046{
2047 if (expect_false (ev_is_active (w)))
2048 return;
2049
2050 /* since we use memcmp, we need to clear any padding data etc. */
2051 memset (&w->prev, 0, sizeof (ev_statdata));
2052 memset (&w->attr, 0, sizeof (ev_statdata));
2053
2054 ev_stat_stat (EV_A_ w);
2055
2056 if (w->interval < MIN_STAT_INTERVAL)
2057 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2058
2059 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
2060 ev_set_priority (&w->timer, ev_priority (w));
2061
2062#if EV_USE_INOTIFY
2063 infy_init (EV_A);
2064
2065 if (fs_fd >= 0)
2066 infy_add (EV_A_ w);
2067 else
2068#endif
2069 ev_timer_start (EV_A_ &w->timer);
2070
2071 ev_start (EV_A_ (W)w, 1);
2072}
2073
2074void
2075ev_stat_stop (EV_P_ ev_stat *w)
2076{
2077 clear_pending (EV_A_ (W)w);
2078 if (expect_false (!ev_is_active (w)))
2079 return;
2080
2081#if EV_USE_INOTIFY
2082 infy_del (EV_A_ w);
2083#endif
2084 ev_timer_stop (EV_A_ &w->timer);
2085
2086 ev_stop (EV_A_ (W)w);
2087}
2088#endif
2089
2090#if EV_IDLE_ENABLE
2091void
2092ev_idle_start (EV_P_ ev_idle *w)
2093{
2094 if (expect_false (ev_is_active (w)))
2095 return;
2096
2097 pri_adjust (EV_A_ (W)w);
2098
2099 {
2100 int active = ++idlecnt [ABSPRI (w)];
2101
2102 ++idleall;
2103 ev_start (EV_A_ (W)w, active);
2104
2105 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2106 idles [ABSPRI (w)][active - 1] = w;
2107 }
2108}
2109
2110void
2111ev_idle_stop (EV_P_ ev_idle *w)
2112{
2113 clear_pending (EV_A_ (W)w);
2114 if (expect_false (!ev_is_active (w)))
2115 return;
2116
2117 {
2118 int active = ((W)w)->active;
2119
2120 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2121 ((W)idles [ABSPRI (w)][active - 1])->active = active;
2122
2123 ev_stop (EV_A_ (W)w);
2124 --idleall;
2125 }
2126}
2127#endif
2128
2129void
2130ev_prepare_start (EV_P_ ev_prepare *w)
2131{
2132 if (expect_false (ev_is_active (w)))
2133 return;
2134
2135 ev_start (EV_A_ (W)w, ++preparecnt);
2136 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2137 prepares [preparecnt - 1] = w;
2138}
2139
2140void
2141ev_prepare_stop (EV_P_ ev_prepare *w)
2142{
2143 clear_pending (EV_A_ (W)w);
2144 if (expect_false (!ev_is_active (w)))
2145 return;
2146
2147 {
2148 int active = ((W)w)->active;
2149 prepares [active - 1] = prepares [--preparecnt];
2150 ((W)prepares [active - 1])->active = active;
2151 }
2152
2153 ev_stop (EV_A_ (W)w);
2154}
2155
2156void
2157ev_check_start (EV_P_ ev_check *w)
2158{
2159 if (expect_false (ev_is_active (w)))
2160 return;
2161
2162 ev_start (EV_A_ (W)w, ++checkcnt);
2163 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2164 checks [checkcnt - 1] = w;
2165}
2166
2167void
2168ev_check_stop (EV_P_ ev_check *w)
2169{
2170 clear_pending (EV_A_ (W)w);
2171 if (expect_false (!ev_is_active (w)))
2172 return;
2173
2174 {
2175 int active = ((W)w)->active;
2176 checks [active - 1] = checks [--checkcnt];
2177 ((W)checks [active - 1])->active = active;
2178 }
2179
2180 ev_stop (EV_A_ (W)w);
2181}
2182
2183#if EV_EMBED_ENABLE
2184void noinline
2185ev_embed_sweep (EV_P_ ev_embed *w)
2186{
2187 ev_loop (w->loop, EVLOOP_NONBLOCK);
2188}
2189
2190static void
2191embed_cb (EV_P_ ev_io *io, int revents)
2192{
2193 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2194
2195 if (ev_cb (w))
2196 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2197 else
2198 ev_embed_sweep (loop, w);
2199}
2200
2201void
2202ev_embed_start (EV_P_ ev_embed *w)
2203{
2204 if (expect_false (ev_is_active (w)))
2205 return;
2206
2207 {
2208 struct ev_loop *loop = w->loop;
2209 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2210 ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
2211 }
2212
2213 ev_set_priority (&w->io, ev_priority (w));
2214 ev_io_start (EV_A_ &w->io);
2215
2216 ev_start (EV_A_ (W)w, 1);
2217}
2218
2219void
2220ev_embed_stop (EV_P_ ev_embed *w)
2221{
2222 clear_pending (EV_A_ (W)w);
2223 if (expect_false (!ev_is_active (w)))
2224 return;
2225
2226 ev_io_stop (EV_A_ &w->io);
2227
2228 ev_stop (EV_A_ (W)w);
2229}
2230#endif
2231
2232#if EV_FORK_ENABLE
2233void
2234ev_fork_start (EV_P_ ev_fork *w)
2235{
2236 if (expect_false (ev_is_active (w)))
2237 return;
2238
2239 ev_start (EV_A_ (W)w, ++forkcnt);
2240 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2241 forks [forkcnt - 1] = w;
2242}
2243
2244void
2245ev_fork_stop (EV_P_ ev_fork *w)
2246{
2247 clear_pending (EV_A_ (W)w);
2248 if (expect_false (!ev_is_active (w)))
2249 return;
2250
2251 {
2252 int active = ((W)w)->active;
2253 forks [active - 1] = forks [--forkcnt];
2254 ((W)forks [active - 1])->active = active;
2255 }
2256
2257 ev_stop (EV_A_ (W)w);
2258}
2259#endif
2260
1297/*****************************************************************************/ 2261/*****************************************************************************/
1298 2262
1299struct ev_once 2263struct ev_once
1300{ 2264{
1301 struct ev_io io; 2265 ev_io io;
1302 struct ev_timer to; 2266 ev_timer to;
1303 void (*cb)(int revents, void *arg); 2267 void (*cb)(int revents, void *arg);
1304 void *arg; 2268 void *arg;
1305}; 2269};
1306 2270
1307static void 2271static void
… …
1310 void (*cb)(int revents, void *arg) = once->cb; 2274 void (*cb)(int revents, void *arg) = once->cb;
1311 void *arg = once->arg; 2275 void *arg = once->arg;
1312 2276
1313 ev_io_stop (EV_A_ &once->io); 2277 ev_io_stop (EV_A_ &once->io);
1314 ev_timer_stop (EV_A_ &once->to); 2278 ev_timer_stop (EV_A_ &once->to);
1315 free (once); 2279 ev_free (once);
1316 2280
1317 cb (revents, arg); 2281 cb (revents, arg);
1318} 2282}
1319 2283
1320static void 2284static void
1321once_cb_io (EV_P_ struct ev_io *w, int revents) 2285once_cb_io (EV_P_ ev_io *w, int revents)
1322{ 2286{
1323 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 2287 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1324} 2288}
1325 2289
1326static void 2290static void
1327once_cb_to (EV_P_ struct ev_timer *w, int revents) 2291once_cb_to (EV_P_ ev_timer *w, int revents)
1328{ 2292{
1329 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 2293 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1330} 2294}
1331 2295
1332void 2296void
1333ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 2297ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1334{ 2298{
1335 struct ev_once *once = malloc (sizeof (struct ev_once)); 2299 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1336 2300
1337 if (!once) 2301 if (expect_false (!once))
2302 {
1338 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 2303 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1339 else 2304 return;
1340 { 2305 }
2306
1341 once->cb = cb; 2307 once->cb = cb;
1342 once->arg = arg; 2308 once->arg = arg;
1343 2309
1344 ev_watcher_init (&once->io, once_cb_io); 2310 ev_init (&once->io, once_cb_io);
1345 if (fd >= 0) 2311 if (fd >= 0)
1346 { 2312 {
1347 ev_io_set (&once->io, fd, events); 2313 ev_io_set (&once->io, fd, events);
1348 ev_io_start (EV_A_ &once->io); 2314 ev_io_start (EV_A_ &once->io);
1349 } 2315 }
1350 2316
1351 ev_watcher_init (&once->to, once_cb_to); 2317 ev_init (&once->to, once_cb_to);
1352 if (timeout >= 0.) 2318 if (timeout >= 0.)
1353 { 2319 {
1354 ev_timer_set (&once->to, timeout, 0.); 2320 ev_timer_set (&once->to, timeout, 0.);
1355 ev_timer_start (EV_A_ &once->to); 2321 ev_timer_start (EV_A_ &once->to);
1356 }
1357 } 2322 }
1358} 2323}
1359 2324
2325#ifdef __cplusplus
2326}
2327#endif
2328

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