ViewVC Help
View File | Revision Log | Show Annotations | Download File
/cvs/libev/ev.c
(Generate patch)

Comparing libev/ev.c (file contents):
Revision 1.57 by root, Sun Nov 4 16:43:53 2007 UTC vs.
Revision 1.184 by root, Wed Dec 12 05:30:52 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 unsigned char 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 |= (unsigned char)w->events;
278 542
279 anfd->reify = 0; 543#if EV_SELECT_IS_WINSOCKET
280 544 if (events)
281 if (anfd->events != events)
282 { 545 {
283 method_modify (EV_A_ fd, anfd->events, events); 546 unsigned long argp;
284 anfd->events = events; 547 anfd->handle = _get_osfhandle (fd);
548 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
285 } 549 }
550#endif
551
552 {
553 unsigned char o_events = anfd->events;
554 unsigned char o_reify = anfd->reify;
555
556 anfd->reify = 0;
557 anfd->events = events;
558
559 if (o_events != events || o_reify & EV_IOFDSET)
560 backend_modify (EV_A_ fd, o_events, events);
561 }
286 } 562 }
287 563
288 fdchangecnt = 0; 564 fdchangecnt = 0;
289} 565}
290 566
291static void 567void inline_size
292fd_change (EV_P_ int fd) 568fd_change (EV_P_ int fd, int flags)
293{ 569{
294 if (anfds [fd].reify || fdchangecnt < 0) 570 unsigned char reify = anfds [fd].reify;
295 return;
296
297 anfds [fd].reify = 1; 571 anfds [fd].reify |= flags;
298 572
573 if (expect_true (!reify))
574 {
299 ++fdchangecnt; 575 ++fdchangecnt;
300 array_needsize (fdchanges, fdchangemax, fdchangecnt, ); 576 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
301 fdchanges [fdchangecnt - 1] = fd; 577 fdchanges [fdchangecnt - 1] = fd;
578 }
302} 579}
303 580
304static void 581void inline_speed
305fd_kill (EV_P_ int fd) 582fd_kill (EV_P_ int fd)
306{ 583{
307 struct ev_io *w; 584 ev_io *w;
308 585
309 while ((w = (struct ev_io *)anfds [fd].head)) 586 while ((w = (ev_io *)anfds [fd].head))
310 { 587 {
311 ev_io_stop (EV_A_ w); 588 ev_io_stop (EV_A_ w);
312 event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 589 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
313 } 590 }
591}
592
593int inline_size
594fd_valid (int fd)
595{
596#ifdef _WIN32
597 return _get_osfhandle (fd) != -1;
598#else
599 return fcntl (fd, F_GETFD) != -1;
600#endif
314} 601}
315 602
316/* called on EBADF to verify fds */ 603/* called on EBADF to verify fds */
317static void 604static void noinline
318fd_ebadf (EV_P) 605fd_ebadf (EV_P)
319{ 606{
320 int fd; 607 int fd;
321 608
322 for (fd = 0; fd < anfdmax; ++fd) 609 for (fd = 0; fd < anfdmax; ++fd)
323 if (anfds [fd].events) 610 if (anfds [fd].events)
324 if (fcntl (fd, F_GETFD) == -1 && errno == EBADF) 611 if (!fd_valid (fd) == -1 && errno == EBADF)
325 fd_kill (EV_A_ fd); 612 fd_kill (EV_A_ fd);
326} 613}
327 614
328/* called on ENOMEM in select/poll to kill some fds and retry */ 615/* called on ENOMEM in select/poll to kill some fds and retry */
329static void 616static void noinline
330fd_enomem (EV_P) 617fd_enomem (EV_P)
331{ 618{
332 int fd = anfdmax; 619 int fd;
333 620
334 while (fd--) 621 for (fd = anfdmax; fd--; )
335 if (anfds [fd].events) 622 if (anfds [fd].events)
336 { 623 {
337 close (fd);
338 fd_kill (EV_A_ fd); 624 fd_kill (EV_A_ fd);
339 return; 625 return;
340 } 626 }
341} 627}
342 628
343/* susually called after fork if method needs to re-arm all fds from scratch */ 629/* usually called after fork if backend needs to re-arm all fds from scratch */
344static void 630static void noinline
345fd_rearm_all (EV_P) 631fd_rearm_all (EV_P)
346{ 632{
347 int fd; 633 int fd;
348 634
349 /* this should be highly optimised to not do anything but set a flag */
350 for (fd = 0; fd < anfdmax; ++fd) 635 for (fd = 0; fd < anfdmax; ++fd)
351 if (anfds [fd].events) 636 if (anfds [fd].events)
352 { 637 {
353 anfds [fd].events = 0; 638 anfds [fd].events = 0;
354 fd_change (fd); 639 fd_change (EV_A_ fd, EV_IOFDSET | 1);
355 } 640 }
356} 641}
357 642
358/*****************************************************************************/ 643/*****************************************************************************/
359 644
360static void 645void inline_speed
361upheap (WT *heap, int k) 646upheap (WT *heap, int k)
362{ 647{
363 WT w = heap [k]; 648 WT w = heap [k];
364 649
365 while (k && heap [k >> 1]->at > w->at) 650 while (k)
366 { 651 {
652 int p = (k - 1) >> 1;
653
654 if (heap [p]->at <= w->at)
655 break;
656
367 heap [k] = heap [k >> 1]; 657 heap [k] = heap [p];
368 heap [k]->active = k + 1; 658 ((W)heap [k])->active = k + 1;
369 k >>= 1; 659 k = p;
370 } 660 }
371 661
372 heap [k] = w; 662 heap [k] = w;
373 heap [k]->active = k + 1; 663 ((W)heap [k])->active = k + 1;
374
375} 664}
376 665
377static void 666void inline_speed
378downheap (WT *heap, int N, int k) 667downheap (WT *heap, int N, int k)
379{ 668{
380 WT w = heap [k]; 669 WT w = heap [k];
381 670
382 while (k < (N >> 1)) 671 for (;;)
383 { 672 {
384 int j = k << 1; 673 int c = (k << 1) + 1;
385 674
386 if (j + 1 < N && heap [j]->at > heap [j + 1]->at) 675 if (c >= N)
387 ++j;
388
389 if (w->at <= heap [j]->at)
390 break; 676 break;
391 677
678 c += c + 1 < N && heap [c]->at > heap [c + 1]->at
679 ? 1 : 0;
680
681 if (w->at <= heap [c]->at)
682 break;
683
392 heap [k] = heap [j]; 684 heap [k] = heap [c];
393 heap [k]->active = k + 1; 685 ((W)heap [k])->active = k + 1;
686
394 k = j; 687 k = c;
395 } 688 }
396 689
397 heap [k] = w; 690 heap [k] = w;
398 heap [k]->active = k + 1; 691 ((W)heap [k])->active = k + 1;
692}
693
694void inline_size
695adjustheap (WT *heap, int N, int k)
696{
697 upheap (heap, k);
698 downheap (heap, N, k);
399} 699}
400 700
401/*****************************************************************************/ 701/*****************************************************************************/
402 702
403typedef struct 703typedef struct
404{ 704{
405 struct ev_watcher_list *head; 705 WL head;
406 sig_atomic_t volatile gotsig; 706 sig_atomic_t volatile gotsig;
407} ANSIG; 707} ANSIG;
408 708
409static ANSIG *signals; 709static ANSIG *signals;
410static int signalmax; 710static int signalmax;
411 711
412static int sigpipe [2]; 712static int sigpipe [2];
413static sig_atomic_t volatile gotsig; 713static sig_atomic_t volatile gotsig;
714static ev_io sigev;
414 715
415static void 716void inline_size
416signals_init (ANSIG *base, int count) 717signals_init (ANSIG *base, int count)
417{ 718{
418 while (count--) 719 while (count--)
419 { 720 {
420 base->head = 0; 721 base->head = 0;
… …
425} 726}
426 727
427static void 728static void
428sighandler (int signum) 729sighandler (int signum)
429{ 730{
731#if _WIN32
732 signal (signum, sighandler);
733#endif
734
430 signals [signum - 1].gotsig = 1; 735 signals [signum - 1].gotsig = 1;
431 736
432 if (!gotsig) 737 if (!gotsig)
433 { 738 {
434 int old_errno = errno; 739 int old_errno = errno;
… …
436 write (sigpipe [1], &signum, 1); 741 write (sigpipe [1], &signum, 1);
437 errno = old_errno; 742 errno = old_errno;
438 } 743 }
439} 744}
440 745
746void noinline
747ev_feed_signal_event (EV_P_ int signum)
748{
749 WL w;
750
751#if EV_MULTIPLICITY
752 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
753#endif
754
755 --signum;
756
757 if (signum < 0 || signum >= signalmax)
758 return;
759
760 signals [signum].gotsig = 0;
761
762 for (w = signals [signum].head; w; w = w->next)
763 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
764}
765
441static void 766static void
442sigcb (EV_P_ struct ev_io *iow, int revents) 767sigcb (EV_P_ ev_io *iow, int revents)
443{ 768{
444 struct ev_watcher_list *w;
445 int signum; 769 int signum;
446 770
447 read (sigpipe [0], &revents, 1); 771 read (sigpipe [0], &revents, 1);
448 gotsig = 0; 772 gotsig = 0;
449 773
450 for (signum = signalmax; signum--; ) 774 for (signum = signalmax; signum--; )
451 if (signals [signum].gotsig) 775 if (signals [signum].gotsig)
452 { 776 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} 777}
459 778
460static void 779void inline_speed
780fd_intern (int fd)
781{
782#ifdef _WIN32
783 int arg = 1;
784 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
785#else
786 fcntl (fd, F_SETFD, FD_CLOEXEC);
787 fcntl (fd, F_SETFL, O_NONBLOCK);
788#endif
789}
790
791static void noinline
461siginit (EV_P) 792siginit (EV_P)
462{ 793{
463#ifndef WIN32 794 fd_intern (sigpipe [0]);
464 fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC); 795 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
471 796
472 ev_io_set (&sigev, sigpipe [0], EV_READ); 797 ev_io_set (&sigev, sigpipe [0], EV_READ);
473 ev_io_start (EV_A_ &sigev); 798 ev_io_start (EV_A_ &sigev);
474 ev_unref (EV_A); /* child watcher should not keep loop alive */ 799 ev_unref (EV_A); /* child watcher should not keep loop alive */
475} 800}
476 801
477/*****************************************************************************/ 802/*****************************************************************************/
478 803
804static WL childs [EV_PID_HASHSIZE];
805
479#ifndef WIN32 806#ifndef _WIN32
807
808static ev_signal childev;
809
810void inline_speed
811child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
812{
813 ev_child *w;
814
815 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
816 if (w->pid == pid || !w->pid)
817 {
818 ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */
819 w->rpid = pid;
820 w->rstatus = status;
821 ev_feed_event (EV_A_ (W)w, EV_CHILD);
822 }
823}
480 824
481#ifndef WCONTINUED 825#ifndef WCONTINUED
482# define WCONTINUED 0 826# define WCONTINUED 0
483#endif 827#endif
484 828
485static void 829static 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) 830childcb (EV_P_ ev_signal *sw, int revents)
502{ 831{
503 int pid, status; 832 int pid, status;
504 833
834 /* some systems define WCONTINUED but then fail to support it (linux 2.4) */
505 if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) 835 if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
506 { 836 if (!WCONTINUED
837 || errno != EINVAL
838 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
839 return;
840
507 /* make sure we are called again until all childs have been reaped */ 841 /* make sure we are called again until all childs have been reaped */
842 /* we need to do it this way so that the callback gets called before we continue */
508 event (EV_A_ (W)sw, EV_SIGNAL); 843 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
509 844
510 child_reap (EV_A_ sw, pid, pid, status); 845 child_reap (EV_A_ sw, pid, pid, status);
846 if (EV_PID_HASHSIZE > 1)
511 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */ 847 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
512 }
513} 848}
514 849
515#endif 850#endif
516 851
517/*****************************************************************************/ 852/*****************************************************************************/
518 853
854#if EV_USE_PORT
855# include "ev_port.c"
856#endif
519#if EV_USE_KQUEUE 857#if EV_USE_KQUEUE
520# include "ev_kqueue.c" 858# include "ev_kqueue.c"
521#endif 859#endif
522#if EV_USE_EPOLL 860#if EV_USE_EPOLL
523# include "ev_epoll.c" 861# include "ev_epoll.c"
524#endif 862#endif
525#if EV_USEV_POLL 863#if EV_USE_POLL
526# include "ev_poll.c" 864# include "ev_poll.c"
527#endif 865#endif
528#if EV_USE_SELECT 866#if EV_USE_SELECT
529# include "ev_select.c" 867# include "ev_select.c"
530#endif 868#endif
… …
540{ 878{
541 return EV_VERSION_MINOR; 879 return EV_VERSION_MINOR;
542} 880}
543 881
544/* return true if we are running with elevated privileges and should ignore env variables */ 882/* return true if we are running with elevated privileges and should ignore env variables */
545static int 883int inline_size
546enable_secure (void) 884enable_secure (void)
547{ 885{
548#ifdef WIN32 886#ifdef _WIN32
549 return 0; 887 return 0;
550#else 888#else
551 return getuid () != geteuid () 889 return getuid () != geteuid ()
552 || getgid () != getegid (); 890 || getgid () != getegid ();
553#endif 891#endif
554} 892}
555 893
556int 894unsigned int
557ev_method (EV_P) 895ev_supported_backends (void)
558{ 896{
559 return method; 897 unsigned int flags = 0;
560}
561 898
562static void 899 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
563loop_init (EV_P_ int methods) 900 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
901 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
902 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
903 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
904
905 return flags;
906}
907
908unsigned int
909ev_recommended_backends (void)
564{ 910{
565 if (!method) 911 unsigned int flags = ev_supported_backends ();
912
913#ifndef __NetBSD__
914 /* kqueue is borked on everything but netbsd apparently */
915 /* it usually doesn't work correctly on anything but sockets and pipes */
916 flags &= ~EVBACKEND_KQUEUE;
917#endif
918#ifdef __APPLE__
919 // flags &= ~EVBACKEND_KQUEUE; for documentation
920 flags &= ~EVBACKEND_POLL;
921#endif
922
923 return flags;
924}
925
926unsigned int
927ev_embeddable_backends (void)
928{
929 return EVBACKEND_EPOLL
930 | EVBACKEND_KQUEUE
931 | EVBACKEND_PORT;
932}
933
934unsigned int
935ev_backend (EV_P)
936{
937 return backend;
938}
939
940unsigned int
941ev_loop_count (EV_P)
942{
943 return loop_count;
944}
945
946static void noinline
947loop_init (EV_P_ unsigned int flags)
948{
949 if (!backend)
566 { 950 {
567#if EV_USE_MONOTONIC 951#if EV_USE_MONOTONIC
568 { 952 {
569 struct timespec ts; 953 struct timespec ts;
570 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 954 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
571 have_monotonic = 1; 955 have_monotonic = 1;
572 } 956 }
573#endif 957#endif
574 958
575 rt_now = ev_time (); 959 ev_rt_now = ev_time ();
576 mn_now = get_clock (); 960 mn_now = get_clock ();
577 now_floor = mn_now; 961 now_floor = mn_now;
578 rtmn_diff = rt_now - mn_now; 962 rtmn_diff = ev_rt_now - mn_now;
579 963
580 if (methods == EVMETHOD_AUTO) 964 /* pid check not overridable via env */
581 if (!enable_secure () && getenv ("LIBEV_METHODS")) 965#ifndef _WIN32
966 if (flags & EVFLAG_FORKCHECK)
967 curpid = getpid ();
968#endif
969
970 if (!(flags & EVFLAG_NOENV)
971 && !enable_secure ()
972 && getenv ("LIBEV_FLAGS"))
582 methods = atoi (getenv ("LIBEV_METHODS")); 973 flags = atoi (getenv ("LIBEV_FLAGS"));
583 else
584 methods = EVMETHOD_ANY;
585 974
586 method = 0; 975 if (!(flags & 0x0000ffffUL))
976 flags |= ev_recommended_backends ();
977
978 backend = 0;
979 backend_fd = -1;
980#if EV_USE_INOTIFY
981 fs_fd = -2;
982#endif
983
984#if EV_USE_PORT
985 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
986#endif
587#if EV_USE_KQUEUE 987#if EV_USE_KQUEUE
588 if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods); 988 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
589#endif 989#endif
590#if EV_USE_EPOLL 990#if EV_USE_EPOLL
591 if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods); 991 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
592#endif 992#endif
593#if EV_USEV_POLL 993#if EV_USE_POLL
594 if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods); 994 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
595#endif 995#endif
596#if EV_USE_SELECT 996#if EV_USE_SELECT
597 if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods); 997 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
598#endif 998#endif
599 }
600}
601 999
602void 1000 ev_init (&sigev, sigcb);
1001 ev_set_priority (&sigev, EV_MAXPRI);
1002 }
1003}
1004
1005static void noinline
603loop_destroy (EV_P) 1006loop_destroy (EV_P)
604{ 1007{
1008 int i;
1009
1010#if EV_USE_INOTIFY
1011 if (fs_fd >= 0)
1012 close (fs_fd);
1013#endif
1014
1015 if (backend_fd >= 0)
1016 close (backend_fd);
1017
1018#if EV_USE_PORT
1019 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1020#endif
605#if EV_USE_KQUEUE 1021#if EV_USE_KQUEUE
606 if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A); 1022 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
607#endif 1023#endif
608#if EV_USE_EPOLL 1024#if EV_USE_EPOLL
609 if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A); 1025 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
610#endif 1026#endif
611#if EV_USEV_POLL 1027#if EV_USE_POLL
612 if (method == EVMETHOD_POLL ) poll_destroy (EV_A); 1028 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
613#endif 1029#endif
614#if EV_USE_SELECT 1030#if EV_USE_SELECT
615 if (method == EVMETHOD_SELECT) select_destroy (EV_A); 1031 if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
616#endif 1032#endif
617 1033
618 method = 0; 1034 for (i = NUMPRI; i--; )
619 /*TODO*/ 1035 {
620} 1036 array_free (pending, [i]);
1037#if EV_IDLE_ENABLE
1038 array_free (idle, [i]);
1039#endif
1040 }
621 1041
622void 1042 /* have to use the microsoft-never-gets-it-right macro */
1043 array_free (fdchange, EMPTY);
1044 array_free (timer, EMPTY);
1045#if EV_PERIODIC_ENABLE
1046 array_free (periodic, EMPTY);
1047#endif
1048 array_free (prepare, EMPTY);
1049 array_free (check, EMPTY);
1050
1051 backend = 0;
1052}
1053
1054void inline_size infy_fork (EV_P);
1055
1056void inline_size
623loop_fork (EV_P) 1057loop_fork (EV_P)
624{ 1058{
625 /*TODO*/ 1059#if EV_USE_PORT
1060 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1061#endif
1062#if EV_USE_KQUEUE
1063 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
1064#endif
626#if EV_USE_EPOLL 1065#if EV_USE_EPOLL
627 if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A); 1066 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
628#endif 1067#endif
629#if EV_USE_KQUEUE 1068#if EV_USE_INOTIFY
630 if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A); 1069 infy_fork (EV_A);
631#endif 1070#endif
1071
1072 if (ev_is_active (&sigev))
1073 {
1074 /* default loop */
1075
1076 ev_ref (EV_A);
1077 ev_io_stop (EV_A_ &sigev);
1078 close (sigpipe [0]);
1079 close (sigpipe [1]);
1080
1081 while (pipe (sigpipe))
1082 syserr ("(libev) error creating pipe");
1083
1084 siginit (EV_A);
1085 }
1086
1087 postfork = 0;
632} 1088}
633 1089
634#if EV_MULTIPLICITY 1090#if EV_MULTIPLICITY
635struct ev_loop * 1091struct ev_loop *
636ev_loop_new (int methods) 1092ev_loop_new (unsigned int flags)
637{ 1093{
638 struct ev_loop *loop = (struct ev_loop *)calloc (1, sizeof (struct ev_loop)); 1094 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
639 1095
1096 memset (loop, 0, sizeof (struct ev_loop));
1097
640 loop_init (EV_A_ methods); 1098 loop_init (EV_A_ flags);
641 1099
642 if (ev_methods (EV_A)) 1100 if (ev_backend (EV_A))
643 return loop; 1101 return loop;
644 1102
645 return 0; 1103 return 0;
646} 1104}
647 1105
648void 1106void
649ev_loop_destroy (EV_P) 1107ev_loop_destroy (EV_P)
650{ 1108{
651 loop_destroy (EV_A); 1109 loop_destroy (EV_A);
652 free (loop); 1110 ev_free (loop);
653} 1111}
654 1112
655void 1113void
656ev_loop_fork (EV_P) 1114ev_loop_fork (EV_P)
657{ 1115{
658 loop_fork (EV_A); 1116 postfork = 1;
659} 1117}
660 1118
661#endif 1119#endif
662 1120
663#if EV_MULTIPLICITY 1121#if EV_MULTIPLICITY
664struct ev_loop default_loop_struct;
665static struct ev_loop *default_loop;
666
667struct ev_loop * 1122struct ev_loop *
1123ev_default_loop_init (unsigned int flags)
668#else 1124#else
669static int default_loop;
670
671int 1125int
1126ev_default_loop (unsigned int flags)
672#endif 1127#endif
673ev_default_loop (int methods)
674{ 1128{
675 if (sigpipe [0] == sigpipe [1]) 1129 if (sigpipe [0] == sigpipe [1])
676 if (pipe (sigpipe)) 1130 if (pipe (sigpipe))
677 return 0; 1131 return 0;
678 1132
679 if (!default_loop) 1133 if (!ev_default_loop_ptr)
680 { 1134 {
681#if EV_MULTIPLICITY 1135#if EV_MULTIPLICITY
682 struct ev_loop *loop = default_loop = &default_loop_struct; 1136 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
683#else 1137#else
684 default_loop = 1; 1138 ev_default_loop_ptr = 1;
685#endif 1139#endif
686 1140
687 loop_init (EV_A_ methods); 1141 loop_init (EV_A_ flags);
688 1142
689 if (ev_method (EV_A)) 1143 if (ev_backend (EV_A))
690 { 1144 {
691 ev_watcher_init (&sigev, sigcb);
692 ev_set_priority (&sigev, EV_MAXPRI);
693 siginit (EV_A); 1145 siginit (EV_A);
694 1146
695#ifndef WIN32 1147#ifndef _WIN32
696 ev_signal_init (&childev, childcb, SIGCHLD); 1148 ev_signal_init (&childev, childcb, SIGCHLD);
697 ev_set_priority (&childev, EV_MAXPRI); 1149 ev_set_priority (&childev, EV_MAXPRI);
698 ev_signal_start (EV_A_ &childev); 1150 ev_signal_start (EV_A_ &childev);
699 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1151 ev_unref (EV_A); /* child watcher should not keep loop alive */
700#endif 1152#endif
701 } 1153 }
702 else 1154 else
703 default_loop = 0; 1155 ev_default_loop_ptr = 0;
704 } 1156 }
705 1157
706 return default_loop; 1158 return ev_default_loop_ptr;
707} 1159}
708 1160
709void 1161void
710ev_default_destroy (void) 1162ev_default_destroy (void)
711{ 1163{
712#if EV_MULTIPLICITY 1164#if EV_MULTIPLICITY
713 struct ev_loop *loop = default_loop; 1165 struct ev_loop *loop = ev_default_loop_ptr;
714#endif 1166#endif
715 1167
1168#ifndef _WIN32
716 ev_ref (EV_A); /* child watcher */ 1169 ev_ref (EV_A); /* child watcher */
717 ev_signal_stop (EV_A_ &childev); 1170 ev_signal_stop (EV_A_ &childev);
1171#endif
718 1172
719 ev_ref (EV_A); /* signal watcher */ 1173 ev_ref (EV_A); /* signal watcher */
720 ev_io_stop (EV_A_ &sigev); 1174 ev_io_stop (EV_A_ &sigev);
721 1175
722 close (sigpipe [0]); sigpipe [0] = 0; 1176 close (sigpipe [0]); sigpipe [0] = 0;
… …
724 1178
725 loop_destroy (EV_A); 1179 loop_destroy (EV_A);
726} 1180}
727 1181
728void 1182void
729ev_default_fork (EV_P) 1183ev_default_fork (void)
730{ 1184{
731 loop_fork (EV_A); 1185#if EV_MULTIPLICITY
1186 struct ev_loop *loop = ev_default_loop_ptr;
1187#endif
732 1188
733 ev_io_stop (EV_A_ &sigev); 1189 if (backend)
734 close (sigpipe [0]); 1190 postfork = 1;
735 close (sigpipe [1]);
736 pipe (sigpipe);
737
738 ev_ref (EV_A); /* signal watcher */
739 siginit (EV_A);
740} 1191}
741 1192
742/*****************************************************************************/ 1193/*****************************************************************************/
743 1194
744static void 1195void
1196ev_invoke (EV_P_ void *w, int revents)
1197{
1198 EV_CB_INVOKE ((W)w, revents);
1199}
1200
1201void inline_speed
745call_pending (EV_P) 1202call_pending (EV_P)
746{ 1203{
747 int pri; 1204 int pri;
748 1205
749 for (pri = NUMPRI; pri--; ) 1206 for (pri = NUMPRI; pri--; )
750 while (pendingcnt [pri]) 1207 while (pendingcnt [pri])
751 { 1208 {
752 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 1209 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
753 1210
754 if (p->w) 1211 if (expect_true (p->w))
755 { 1212 {
1213 /*assert (("non-pending watcher on pending list", p->w->pending));*/
1214
756 p->w->pending = 0; 1215 p->w->pending = 0;
757 p->w->cb (EV_A_ p->w, p->events); 1216 EV_CB_INVOKE (p->w, p->events);
758 } 1217 }
759 } 1218 }
760} 1219}
761 1220
762static void 1221void inline_size
763timers_reify (EV_P) 1222timers_reify (EV_P)
764{ 1223{
765 while (timercnt && timers [0]->at <= mn_now) 1224 while (timercnt && ((WT)timers [0])->at <= mn_now)
766 { 1225 {
767 struct ev_timer *w = timers [0]; 1226 ev_timer *w = (ev_timer *)timers [0];
1227
1228 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
768 1229
769 /* first reschedule or stop timer */ 1230 /* first reschedule or stop timer */
770 if (w->repeat) 1231 if (w->repeat)
771 { 1232 {
772 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 1233 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1234
773 w->at = mn_now + w->repeat; 1235 ((WT)w)->at += w->repeat;
1236 if (((WT)w)->at < mn_now)
1237 ((WT)w)->at = mn_now;
1238
774 downheap ((WT *)timers, timercnt, 0); 1239 downheap (timers, timercnt, 0);
775 } 1240 }
776 else 1241 else
777 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ 1242 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
778 1243
779 event (EV_A_ (W)w, EV_TIMEOUT); 1244 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
780 } 1245 }
781} 1246}
782 1247
783static void 1248#if EV_PERIODIC_ENABLE
1249void inline_size
784periodics_reify (EV_P) 1250periodics_reify (EV_P)
785{ 1251{
786 while (periodiccnt && periodics [0]->at <= rt_now) 1252 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
787 { 1253 {
788 struct ev_periodic *w = periodics [0]; 1254 ev_periodic *w = (ev_periodic *)periodics [0];
1255
1256 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
789 1257
790 /* first reschedule or stop timer */ 1258 /* first reschedule or stop timer */
791 if (w->interval) 1259 if (w->reschedule_cb)
792 { 1260 {
1261 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1262 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1263 downheap (periodics, periodiccnt, 0);
1264 }
1265 else if (w->interval)
1266 {
793 w->at += floor ((rt_now - w->at) / w->interval + 1.) * w->interval; 1267 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1268 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)); 1269 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); 1270 downheap (periodics, periodiccnt, 0);
796 } 1271 }
797 else 1272 else
798 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 1273 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
799 1274
800 event (EV_A_ (W)w, EV_PERIODIC); 1275 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
801 } 1276 }
802} 1277}
803 1278
804static void 1279static void noinline
805periodics_reschedule (EV_P) 1280periodics_reschedule (EV_P)
806{ 1281{
807 int i; 1282 int i;
808 1283
809 /* adjust periodics after time jump */ 1284 /* adjust periodics after time jump */
810 for (i = 0; i < periodiccnt; ++i) 1285 for (i = 0; i < periodiccnt; ++i)
811 { 1286 {
812 struct ev_periodic *w = periodics [i]; 1287 ev_periodic *w = (ev_periodic *)periodics [i];
813 1288
1289 if (w->reschedule_cb)
1290 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
814 if (w->interval) 1291 else if (w->interval)
1292 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1293 }
1294
1295 /* now rebuild the heap */
1296 for (i = periodiccnt >> 1; i--; )
1297 downheap (periodics, periodiccnt, i);
1298}
1299#endif
1300
1301#if EV_IDLE_ENABLE
1302void inline_size
1303idle_reify (EV_P)
1304{
1305 if (expect_false (idleall))
1306 {
1307 int pri;
1308
1309 for (pri = NUMPRI; pri--; )
815 { 1310 {
816 ev_tstamp diff = ceil ((rt_now - w->at) / w->interval) * w->interval; 1311 if (pendingcnt [pri])
1312 break;
817 1313
818 if (fabs (diff) >= 1e-4) 1314 if (idlecnt [pri])
819 { 1315 {
820 ev_periodic_stop (EV_A_ w); 1316 queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
821 ev_periodic_start (EV_A_ w); 1317 break;
822
823 i = 0; /* restart loop, inefficient, but time jumps should be rare */
824 } 1318 }
825 } 1319 }
826 } 1320 }
827} 1321}
1322#endif
828 1323
829inline int 1324void inline_speed
830time_update_monotonic (EV_P) 1325time_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{ 1326{
850 int i; 1327 int i;
851 1328
852#if EV_USE_MONOTONIC 1329#if EV_USE_MONOTONIC
853 if (expect_true (have_monotonic)) 1330 if (expect_true (have_monotonic))
854 { 1331 {
855 if (time_update_monotonic (EV_A)) 1332 ev_tstamp odiff = rtmn_diff;
1333
1334 mn_now = get_clock ();
1335
1336 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
1337 /* interpolate in the meantime */
1338 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
856 { 1339 {
857 ev_tstamp odiff = rtmn_diff; 1340 ev_rt_now = rtmn_diff + mn_now;
1341 return;
1342 }
858 1343
1344 now_floor = mn_now;
1345 ev_rt_now = ev_time ();
1346
859 for (i = 4; --i; ) /* loop a few times, before making important decisions */ 1347 /* loop a few times, before making important decisions.
1348 * on the choice of "4": one iteration isn't enough,
1349 * in case we get preempted during the calls to
1350 * ev_time and get_clock. a second call is almost guaranteed
1351 * to succeed in that case, though. and looping a few more times
1352 * doesn't hurt either as we only do this on time-jumps or
1353 * in the unlikely event of having been preempted here.
1354 */
1355 for (i = 4; --i; )
860 { 1356 {
861 rtmn_diff = rt_now - mn_now; 1357 rtmn_diff = ev_rt_now - mn_now;
862 1358
863 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) 1359 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
864 return; /* all is well */ 1360 return; /* all is well */
865 1361
866 rt_now = ev_time (); 1362 ev_rt_now = ev_time ();
867 mn_now = get_clock (); 1363 mn_now = get_clock ();
868 now_floor = mn_now; 1364 now_floor = mn_now;
869 } 1365 }
870 1366
1367# if EV_PERIODIC_ENABLE
1368 periodics_reschedule (EV_A);
1369# endif
1370 /* no timer adjustment, as the monotonic clock doesn't jump */
1371 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1372 }
1373 else
1374#endif
1375 {
1376 ev_rt_now = ev_time ();
1377
1378 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1379 {
1380#if EV_PERIODIC_ENABLE
871 periodics_reschedule (EV_A); 1381 periodics_reschedule (EV_A);
872 /* no timer adjustment, as the monotonic clock doesn't jump */ 1382#endif
873 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */ 1383 /* adjust timers. this is easy, as the offset is the same for all of them */
1384 for (i = 0; i < timercnt; ++i)
1385 ((WT)timers [i])->at += ev_rt_now - mn_now;
874 } 1386 }
875 }
876 else
877#endif
878 {
879 rt_now = ev_time ();
880 1387
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; 1388 mn_now = ev_rt_now;
891 } 1389 }
892} 1390}
893 1391
894void 1392void
895ev_ref (EV_P) 1393ev_ref (EV_P)
… …
906static int loop_done; 1404static int loop_done;
907 1405
908void 1406void
909ev_loop (EV_P_ int flags) 1407ev_loop (EV_P_ int flags)
910{ 1408{
911 double block;
912 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0; 1409 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
1410 ? EVUNLOOP_ONE
1411 : EVUNLOOP_CANCEL;
1412
1413 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
913 1414
914 do 1415 do
915 { 1416 {
1417#ifndef _WIN32
1418 if (expect_false (curpid)) /* penalise the forking check even more */
1419 if (expect_false (getpid () != curpid))
1420 {
1421 curpid = getpid ();
1422 postfork = 1;
1423 }
1424#endif
1425
1426#if EV_FORK_ENABLE
1427 /* we might have forked, so queue fork handlers */
1428 if (expect_false (postfork))
1429 if (forkcnt)
1430 {
1431 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1432 call_pending (EV_A);
1433 }
1434#endif
1435
916 /* queue check watchers (and execute them) */ 1436 /* queue prepare watchers (and execute them) */
917 if (expect_false (preparecnt)) 1437 if (expect_false (preparecnt))
918 { 1438 {
919 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 1439 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
920 call_pending (EV_A); 1440 call_pending (EV_A);
921 } 1441 }
922 1442
1443 if (expect_false (!activecnt))
1444 break;
1445
1446 /* we might have forked, so reify kernel state if necessary */
1447 if (expect_false (postfork))
1448 loop_fork (EV_A);
1449
923 /* update fd-related kernel structures */ 1450 /* update fd-related kernel structures */
924 fd_reify (EV_A); 1451 fd_reify (EV_A);
925 1452
926 /* calculate blocking time */ 1453 /* calculate blocking time */
1454 {
1455 ev_tstamp block;
927 1456
928 /* we only need this for !monotonic clockor timers, but as we basically 1457 if (expect_false (flags & EVLOOP_NONBLOCK || idleall || !activecnt))
929 always have timers, we just calculate it always */ 1458 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 1459 else
934#endif
935 { 1460 {
936 rt_now = ev_time (); 1461 /* update time to cancel out callback processing overhead */
937 mn_now = rt_now; 1462 time_update (EV_A_ 1e100);
938 }
939 1463
940 if (flags & EVLOOP_NONBLOCK || idlecnt)
941 block = 0.;
942 else
943 {
944 block = MAX_BLOCKTIME; 1464 block = MAX_BLOCKTIME;
945 1465
946 if (timercnt) 1466 if (timercnt)
947 { 1467 {
948 ev_tstamp to = timers [0]->at - mn_now + method_fudge; 1468 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
949 if (block > to) block = to; 1469 if (block > to) block = to;
950 } 1470 }
951 1471
1472#if EV_PERIODIC_ENABLE
952 if (periodiccnt) 1473 if (periodiccnt)
953 { 1474 {
954 ev_tstamp to = periodics [0]->at - rt_now + method_fudge; 1475 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
955 if (block > to) block = to; 1476 if (block > to) block = to;
956 } 1477 }
1478#endif
957 1479
958 if (block < 0.) block = 0.; 1480 if (expect_false (block < 0.)) block = 0.;
959 } 1481 }
960 1482
1483 ++loop_count;
961 method_poll (EV_A_ block); 1484 backend_poll (EV_A_ block);
962 1485
963 /* update rt_now, do magic */ 1486 /* update ev_rt_now, do magic */
964 time_update (EV_A); 1487 time_update (EV_A_ block);
1488 }
965 1489
966 /* queue pending timers and reschedule them */ 1490 /* queue pending timers and reschedule them */
967 timers_reify (EV_A); /* relative timers called last */ 1491 timers_reify (EV_A); /* relative timers called last */
1492#if EV_PERIODIC_ENABLE
968 periodics_reify (EV_A); /* absolute timers called first */ 1493 periodics_reify (EV_A); /* absolute timers called first */
1494#endif
969 1495
1496#if EV_IDLE_ENABLE
970 /* queue idle watchers unless io or timers are pending */ 1497 /* queue idle watchers unless other events are pending */
971 if (!pendingcnt) 1498 idle_reify (EV_A);
972 queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); 1499#endif
973 1500
974 /* queue check watchers, to be executed first */ 1501 /* queue check watchers, to be executed first */
975 if (checkcnt) 1502 if (expect_false (checkcnt))
976 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 1503 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
977 1504
978 call_pending (EV_A); 1505 call_pending (EV_A);
1506
979 } 1507 }
980 while (activecnt && !loop_done); 1508 while (expect_true (activecnt && !loop_done));
981 1509
982 if (loop_done != 2) 1510 if (loop_done == EVUNLOOP_ONE)
983 loop_done = 0; 1511 loop_done = EVUNLOOP_CANCEL;
984} 1512}
985 1513
986void 1514void
987ev_unloop (EV_P_ int how) 1515ev_unloop (EV_P_ int how)
988{ 1516{
989 loop_done = how; 1517 loop_done = how;
990} 1518}
991 1519
992/*****************************************************************************/ 1520/*****************************************************************************/
993 1521
994inline void 1522void inline_size
995wlist_add (WL *head, WL elem) 1523wlist_add (WL *head, WL elem)
996{ 1524{
997 elem->next = *head; 1525 elem->next = *head;
998 *head = elem; 1526 *head = elem;
999} 1527}
1000 1528
1001inline void 1529void inline_size
1002wlist_del (WL *head, WL elem) 1530wlist_del (WL *head, WL elem)
1003{ 1531{
1004 while (*head) 1532 while (*head)
1005 { 1533 {
1006 if (*head == elem) 1534 if (*head == elem)
… …
1011 1539
1012 head = &(*head)->next; 1540 head = &(*head)->next;
1013 } 1541 }
1014} 1542}
1015 1543
1016inline void 1544void inline_speed
1017ev_clear_pending (EV_P_ W w) 1545clear_pending (EV_P_ W w)
1018{ 1546{
1019 if (w->pending) 1547 if (w->pending)
1020 { 1548 {
1021 pendings [ABSPRI (w)][w->pending - 1].w = 0; 1549 pendings [ABSPRI (w)][w->pending - 1].w = 0;
1022 w->pending = 0; 1550 w->pending = 0;
1023 } 1551 }
1024} 1552}
1025 1553
1026inline void 1554int
1555ev_clear_pending (EV_P_ void *w)
1556{
1557 W w_ = (W)w;
1558 int pending = w_->pending;
1559
1560 if (expect_true (pending))
1561 {
1562 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
1563 w_->pending = 0;
1564 p->w = 0;
1565 return p->events;
1566 }
1567 else
1568 return 0;
1569}
1570
1571void inline_size
1572pri_adjust (EV_P_ W w)
1573{
1574 int pri = w->priority;
1575 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1576 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1577 w->priority = pri;
1578}
1579
1580void inline_speed
1027ev_start (EV_P_ W w, int active) 1581ev_start (EV_P_ W w, int active)
1028{ 1582{
1029 if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; 1583 pri_adjust (EV_A_ w);
1030 if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1031
1032 w->active = active; 1584 w->active = active;
1033 ev_ref (EV_A); 1585 ev_ref (EV_A);
1034} 1586}
1035 1587
1036inline void 1588void inline_size
1037ev_stop (EV_P_ W w) 1589ev_stop (EV_P_ W w)
1038{ 1590{
1039 ev_unref (EV_A); 1591 ev_unref (EV_A);
1040 w->active = 0; 1592 w->active = 0;
1041} 1593}
1042 1594
1043/*****************************************************************************/ 1595/*****************************************************************************/
1044 1596
1045void 1597void noinline
1046ev_io_start (EV_P_ struct ev_io *w) 1598ev_io_start (EV_P_ ev_io *w)
1047{ 1599{
1048 int fd = w->fd; 1600 int fd = w->fd;
1049 1601
1050 if (ev_is_active (w)) 1602 if (expect_false (ev_is_active (w)))
1051 return; 1603 return;
1052 1604
1053 assert (("ev_io_start called with negative fd", fd >= 0)); 1605 assert (("ev_io_start called with negative fd", fd >= 0));
1054 1606
1055 ev_start (EV_A_ (W)w, 1); 1607 ev_start (EV_A_ (W)w, 1);
1056 array_needsize (anfds, anfdmax, fd + 1, anfds_init); 1608 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1057 wlist_add ((WL *)&anfds[fd].head, (WL)w); 1609 wlist_add (&anfds[fd].head, (WL)w);
1058 1610
1059 fd_change (EV_A_ fd); 1611 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);
1612 w->events &= ~EV_IOFDSET;
1060} 1613}
1061 1614
1062void 1615void noinline
1063ev_io_stop (EV_P_ struct ev_io *w) 1616ev_io_stop (EV_P_ ev_io *w)
1064{ 1617{
1065 ev_clear_pending (EV_A_ (W)w); 1618 clear_pending (EV_A_ (W)w);
1066 if (!ev_is_active (w)) 1619 if (expect_false (!ev_is_active (w)))
1067 return; 1620 return;
1068 1621
1622 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1623
1069 wlist_del ((WL *)&anfds[w->fd].head, (WL)w); 1624 wlist_del (&anfds[w->fd].head, (WL)w);
1070 ev_stop (EV_A_ (W)w); 1625 ev_stop (EV_A_ (W)w);
1071 1626
1072 fd_change (EV_A_ w->fd); 1627 fd_change (EV_A_ w->fd, 1);
1073} 1628}
1074 1629
1075void 1630void noinline
1076ev_timer_start (EV_P_ struct ev_timer *w) 1631ev_timer_start (EV_P_ ev_timer *w)
1077{ 1632{
1078 if (ev_is_active (w)) 1633 if (expect_false (ev_is_active (w)))
1079 return; 1634 return;
1080 1635
1081 w->at += mn_now; 1636 ((WT)w)->at += mn_now;
1082 1637
1083 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 1638 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1084 1639
1085 ev_start (EV_A_ (W)w, ++timercnt); 1640 ev_start (EV_A_ (W)w, ++timercnt);
1086 array_needsize (timers, timermax, timercnt, ); 1641 array_needsize (WT, timers, timermax, timercnt, EMPTY2);
1087 timers [timercnt - 1] = w; 1642 timers [timercnt - 1] = (WT)w;
1088 upheap ((WT *)timers, timercnt - 1); 1643 upheap (timers, timercnt - 1);
1089}
1090 1644
1091void 1645 /*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
1646}
1647
1648void noinline
1092ev_timer_stop (EV_P_ struct ev_timer *w) 1649ev_timer_stop (EV_P_ ev_timer *w)
1093{ 1650{
1094 ev_clear_pending (EV_A_ (W)w); 1651 clear_pending (EV_A_ (W)w);
1095 if (!ev_is_active (w)) 1652 if (expect_false (!ev_is_active (w)))
1096 return; 1653 return;
1097 1654
1098 if (w->active < timercnt--) 1655 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w));
1656
1657 {
1658 int active = ((W)w)->active;
1659
1660 if (expect_true (--active < --timercnt))
1099 { 1661 {
1100 timers [w->active - 1] = timers [timercnt]; 1662 timers [active] = timers [timercnt];
1101 downheap ((WT *)timers, timercnt, w->active - 1); 1663 adjustheap (timers, timercnt, active);
1102 } 1664 }
1665 }
1103 1666
1104 w->at = w->repeat; 1667 ((WT)w)->at -= mn_now;
1105 1668
1106 ev_stop (EV_A_ (W)w); 1669 ev_stop (EV_A_ (W)w);
1107} 1670}
1108 1671
1109void 1672void noinline
1110ev_timer_again (EV_P_ struct ev_timer *w) 1673ev_timer_again (EV_P_ ev_timer *w)
1111{ 1674{
1112 if (ev_is_active (w)) 1675 if (ev_is_active (w))
1113 { 1676 {
1114 if (w->repeat) 1677 if (w->repeat)
1115 { 1678 {
1116 w->at = mn_now + w->repeat; 1679 ((WT)w)->at = mn_now + w->repeat;
1117 downheap ((WT *)timers, timercnt, w->active - 1); 1680 adjustheap (timers, timercnt, ((W)w)->active - 1);
1118 } 1681 }
1119 else 1682 else
1120 ev_timer_stop (EV_A_ w); 1683 ev_timer_stop (EV_A_ w);
1121 } 1684 }
1122 else if (w->repeat) 1685 else if (w->repeat)
1686 {
1687 w->at = w->repeat;
1123 ev_timer_start (EV_A_ w); 1688 ev_timer_start (EV_A_ w);
1689 }
1124} 1690}
1125 1691
1126void 1692#if EV_PERIODIC_ENABLE
1693void noinline
1127ev_periodic_start (EV_P_ struct ev_periodic *w) 1694ev_periodic_start (EV_P_ ev_periodic *w)
1128{ 1695{
1129 if (ev_is_active (w)) 1696 if (expect_false (ev_is_active (w)))
1130 return; 1697 return;
1131 1698
1699 if (w->reschedule_cb)
1700 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1701 else if (w->interval)
1702 {
1132 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 1703 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 */ 1704 /* 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; 1705 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1706 }
1707 else
1708 ((WT)w)->at = w->offset;
1137 1709
1138 ev_start (EV_A_ (W)w, ++periodiccnt); 1710 ev_start (EV_A_ (W)w, ++periodiccnt);
1139 array_needsize (periodics, periodicmax, periodiccnt, ); 1711 array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2);
1140 periodics [periodiccnt - 1] = w; 1712 periodics [periodiccnt - 1] = (WT)w;
1141 upheap ((WT *)periodics, periodiccnt - 1); 1713 upheap (periodics, periodiccnt - 1);
1142}
1143 1714
1144void 1715 /*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
1716}
1717
1718void noinline
1145ev_periodic_stop (EV_P_ struct ev_periodic *w) 1719ev_periodic_stop (EV_P_ ev_periodic *w)
1146{ 1720{
1147 ev_clear_pending (EV_A_ (W)w); 1721 clear_pending (EV_A_ (W)w);
1148 if (!ev_is_active (w)) 1722 if (expect_false (!ev_is_active (w)))
1149 return; 1723 return;
1150 1724
1151 if (w->active < periodiccnt--) 1725 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w));
1726
1727 {
1728 int active = ((W)w)->active;
1729
1730 if (expect_true (--active < --periodiccnt))
1152 { 1731 {
1153 periodics [w->active - 1] = periodics [periodiccnt]; 1732 periodics [active] = periodics [periodiccnt];
1154 downheap ((WT *)periodics, periodiccnt, w->active - 1); 1733 adjustheap (periodics, periodiccnt, active);
1155 } 1734 }
1735 }
1156 1736
1157 ev_stop (EV_A_ (W)w); 1737 ev_stop (EV_A_ (W)w);
1158} 1738}
1159 1739
1160void 1740void noinline
1161ev_idle_start (EV_P_ struct ev_idle *w) 1741ev_periodic_again (EV_P_ ev_periodic *w)
1162{ 1742{
1163 if (ev_is_active (w)) 1743 /* 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); 1744 ev_periodic_stop (EV_A_ w);
1745 ev_periodic_start (EV_A_ w);
1180} 1746}
1181 1747#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 1748
1226#ifndef SA_RESTART 1749#ifndef SA_RESTART
1227# define SA_RESTART 0 1750# define SA_RESTART 0
1228#endif 1751#endif
1229 1752
1230void 1753void noinline
1231ev_signal_start (EV_P_ struct ev_signal *w) 1754ev_signal_start (EV_P_ ev_signal *w)
1232{ 1755{
1233#if EV_MULTIPLICITY 1756#if EV_MULTIPLICITY
1234 assert (("signal watchers are only supported in the default loop", loop == default_loop)); 1757 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1235#endif 1758#endif
1236 if (ev_is_active (w)) 1759 if (expect_false (ev_is_active (w)))
1237 return; 1760 return;
1238 1761
1239 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 1762 assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1240 1763
1764 {
1765#ifndef _WIN32
1766 sigset_t full, prev;
1767 sigfillset (&full);
1768 sigprocmask (SIG_SETMASK, &full, &prev);
1769#endif
1770
1771 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1772
1773#ifndef _WIN32
1774 sigprocmask (SIG_SETMASK, &prev, 0);
1775#endif
1776 }
1777
1241 ev_start (EV_A_ (W)w, 1); 1778 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); 1779 wlist_add (&signals [w->signum - 1].head, (WL)w);
1244 1780
1245 if (!w->next) 1781 if (!((WL)w)->next)
1246 { 1782 {
1783#if _WIN32
1784 signal (w->signum, sighandler);
1785#else
1247 struct sigaction sa; 1786 struct sigaction sa;
1248 sa.sa_handler = sighandler; 1787 sa.sa_handler = sighandler;
1249 sigfillset (&sa.sa_mask); 1788 sigfillset (&sa.sa_mask);
1250 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 1789 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1251 sigaction (w->signum, &sa, 0); 1790 sigaction (w->signum, &sa, 0);
1791#endif
1252 } 1792 }
1253} 1793}
1254 1794
1255void 1795void noinline
1256ev_signal_stop (EV_P_ struct ev_signal *w) 1796ev_signal_stop (EV_P_ ev_signal *w)
1257{ 1797{
1258 ev_clear_pending (EV_A_ (W)w); 1798 clear_pending (EV_A_ (W)w);
1259 if (!ev_is_active (w)) 1799 if (expect_false (!ev_is_active (w)))
1260 return; 1800 return;
1261 1801
1262 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); 1802 wlist_del (&signals [w->signum - 1].head, (WL)w);
1263 ev_stop (EV_A_ (W)w); 1803 ev_stop (EV_A_ (W)w);
1264 1804
1265 if (!signals [w->signum - 1].head) 1805 if (!signals [w->signum - 1].head)
1266 signal (w->signum, SIG_DFL); 1806 signal (w->signum, SIG_DFL);
1267} 1807}
1268 1808
1269void 1809void
1270ev_child_start (EV_P_ struct ev_child *w) 1810ev_child_start (EV_P_ ev_child *w)
1271{ 1811{
1272#if EV_MULTIPLICITY 1812#if EV_MULTIPLICITY
1273 assert (("child watchers are only supported in the default loop", loop == default_loop)); 1813 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1274#endif 1814#endif
1275 if (ev_is_active (w)) 1815 if (expect_false (ev_is_active (w)))
1276 return; 1816 return;
1277 1817
1278 ev_start (EV_A_ (W)w, 1); 1818 ev_start (EV_A_ (W)w, 1);
1279 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1819 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1280} 1820}
1281 1821
1282void 1822void
1283ev_child_stop (EV_P_ struct ev_child *w) 1823ev_child_stop (EV_P_ ev_child *w)
1284{ 1824{
1285 ev_clear_pending (EV_A_ (W)w); 1825 clear_pending (EV_A_ (W)w);
1286 if (ev_is_active (w)) 1826 if (expect_false (!ev_is_active (w)))
1287 return; 1827 return;
1288 1828
1289 wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1829 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1290 ev_stop (EV_A_ (W)w); 1830 ev_stop (EV_A_ (W)w);
1291} 1831}
1292 1832
1833#if EV_STAT_ENABLE
1834
1835# ifdef _WIN32
1836# undef lstat
1837# define lstat(a,b) _stati64 (a,b)
1838# endif
1839
1840#define DEF_STAT_INTERVAL 5.0074891
1841#define MIN_STAT_INTERVAL 0.1074891
1842
1843static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
1844
1845#if EV_USE_INOTIFY
1846# define EV_INOTIFY_BUFSIZE 8192
1847
1848static void noinline
1849infy_add (EV_P_ ev_stat *w)
1850{
1851 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);
1852
1853 if (w->wd < 0)
1854 {
1855 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
1856
1857 /* monitor some parent directory for speedup hints */
1858 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
1859 {
1860 char path [4096];
1861 strcpy (path, w->path);
1862
1863 do
1864 {
1865 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
1866 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
1867
1868 char *pend = strrchr (path, '/');
1869
1870 if (!pend)
1871 break; /* whoops, no '/', complain to your admin */
1872
1873 *pend = 0;
1874 w->wd = inotify_add_watch (fs_fd, path, mask);
1875 }
1876 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
1877 }
1878 }
1879 else
1880 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
1881
1882 if (w->wd >= 0)
1883 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
1884}
1885
1886static void noinline
1887infy_del (EV_P_ ev_stat *w)
1888{
1889 int slot;
1890 int wd = w->wd;
1891
1892 if (wd < 0)
1893 return;
1894
1895 w->wd = -2;
1896 slot = wd & (EV_INOTIFY_HASHSIZE - 1);
1897 wlist_del (&fs_hash [slot].head, (WL)w);
1898
1899 /* remove this watcher, if others are watching it, they will rearm */
1900 inotify_rm_watch (fs_fd, wd);
1901}
1902
1903static void noinline
1904infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
1905{
1906 if (slot < 0)
1907 /* overflow, need to check for all hahs slots */
1908 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
1909 infy_wd (EV_A_ slot, wd, ev);
1910 else
1911 {
1912 WL w_;
1913
1914 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
1915 {
1916 ev_stat *w = (ev_stat *)w_;
1917 w_ = w_->next; /* lets us remove this watcher and all before it */
1918
1919 if (w->wd == wd || wd == -1)
1920 {
1921 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
1922 {
1923 w->wd = -1;
1924 infy_add (EV_A_ w); /* re-add, no matter what */
1925 }
1926
1927 stat_timer_cb (EV_A_ &w->timer, 0);
1928 }
1929 }
1930 }
1931}
1932
1933static void
1934infy_cb (EV_P_ ev_io *w, int revents)
1935{
1936 char buf [EV_INOTIFY_BUFSIZE];
1937 struct inotify_event *ev = (struct inotify_event *)buf;
1938 int ofs;
1939 int len = read (fs_fd, buf, sizeof (buf));
1940
1941 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
1942 infy_wd (EV_A_ ev->wd, ev->wd, ev);
1943}
1944
1945void inline_size
1946infy_init (EV_P)
1947{
1948 if (fs_fd != -2)
1949 return;
1950
1951 fs_fd = inotify_init ();
1952
1953 if (fs_fd >= 0)
1954 {
1955 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
1956 ev_set_priority (&fs_w, EV_MAXPRI);
1957 ev_io_start (EV_A_ &fs_w);
1958 }
1959}
1960
1961void inline_size
1962infy_fork (EV_P)
1963{
1964 int slot;
1965
1966 if (fs_fd < 0)
1967 return;
1968
1969 close (fs_fd);
1970 fs_fd = inotify_init ();
1971
1972 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
1973 {
1974 WL w_ = fs_hash [slot].head;
1975 fs_hash [slot].head = 0;
1976
1977 while (w_)
1978 {
1979 ev_stat *w = (ev_stat *)w_;
1980 w_ = w_->next; /* lets us add this watcher */
1981
1982 w->wd = -1;
1983
1984 if (fs_fd >= 0)
1985 infy_add (EV_A_ w); /* re-add, no matter what */
1986 else
1987 ev_timer_start (EV_A_ &w->timer);
1988 }
1989
1990 }
1991}
1992
1993#endif
1994
1995void
1996ev_stat_stat (EV_P_ ev_stat *w)
1997{
1998 if (lstat (w->path, &w->attr) < 0)
1999 w->attr.st_nlink = 0;
2000 else if (!w->attr.st_nlink)
2001 w->attr.st_nlink = 1;
2002}
2003
2004static void noinline
2005stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2006{
2007 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2008
2009 /* we copy this here each the time so that */
2010 /* prev has the old value when the callback gets invoked */
2011 w->prev = w->attr;
2012 ev_stat_stat (EV_A_ w);
2013
2014 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2015 if (
2016 w->prev.st_dev != w->attr.st_dev
2017 || w->prev.st_ino != w->attr.st_ino
2018 || w->prev.st_mode != w->attr.st_mode
2019 || w->prev.st_nlink != w->attr.st_nlink
2020 || w->prev.st_uid != w->attr.st_uid
2021 || w->prev.st_gid != w->attr.st_gid
2022 || w->prev.st_rdev != w->attr.st_rdev
2023 || w->prev.st_size != w->attr.st_size
2024 || w->prev.st_atime != w->attr.st_atime
2025 || w->prev.st_mtime != w->attr.st_mtime
2026 || w->prev.st_ctime != w->attr.st_ctime
2027 ) {
2028 #if EV_USE_INOTIFY
2029 infy_del (EV_A_ w);
2030 infy_add (EV_A_ w);
2031 ev_stat_stat (EV_A_ w); /* avoid race... */
2032 #endif
2033
2034 ev_feed_event (EV_A_ w, EV_STAT);
2035 }
2036}
2037
2038void
2039ev_stat_start (EV_P_ ev_stat *w)
2040{
2041 if (expect_false (ev_is_active (w)))
2042 return;
2043
2044 /* since we use memcmp, we need to clear any padding data etc. */
2045 memset (&w->prev, 0, sizeof (ev_statdata));
2046 memset (&w->attr, 0, sizeof (ev_statdata));
2047
2048 ev_stat_stat (EV_A_ w);
2049
2050 if (w->interval < MIN_STAT_INTERVAL)
2051 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2052
2053 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
2054 ev_set_priority (&w->timer, ev_priority (w));
2055
2056#if EV_USE_INOTIFY
2057 infy_init (EV_A);
2058
2059 if (fs_fd >= 0)
2060 infy_add (EV_A_ w);
2061 else
2062#endif
2063 ev_timer_start (EV_A_ &w->timer);
2064
2065 ev_start (EV_A_ (W)w, 1);
2066}
2067
2068void
2069ev_stat_stop (EV_P_ ev_stat *w)
2070{
2071 clear_pending (EV_A_ (W)w);
2072 if (expect_false (!ev_is_active (w)))
2073 return;
2074
2075#if EV_USE_INOTIFY
2076 infy_del (EV_A_ w);
2077#endif
2078 ev_timer_stop (EV_A_ &w->timer);
2079
2080 ev_stop (EV_A_ (W)w);
2081}
2082#endif
2083
2084#if EV_IDLE_ENABLE
2085void
2086ev_idle_start (EV_P_ ev_idle *w)
2087{
2088 if (expect_false (ev_is_active (w)))
2089 return;
2090
2091 pri_adjust (EV_A_ (W)w);
2092
2093 {
2094 int active = ++idlecnt [ABSPRI (w)];
2095
2096 ++idleall;
2097 ev_start (EV_A_ (W)w, active);
2098
2099 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2100 idles [ABSPRI (w)][active - 1] = w;
2101 }
2102}
2103
2104void
2105ev_idle_stop (EV_P_ ev_idle *w)
2106{
2107 clear_pending (EV_A_ (W)w);
2108 if (expect_false (!ev_is_active (w)))
2109 return;
2110
2111 {
2112 int active = ((W)w)->active;
2113
2114 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2115 ((W)idles [ABSPRI (w)][active - 1])->active = active;
2116
2117 ev_stop (EV_A_ (W)w);
2118 --idleall;
2119 }
2120}
2121#endif
2122
2123void
2124ev_prepare_start (EV_P_ ev_prepare *w)
2125{
2126 if (expect_false (ev_is_active (w)))
2127 return;
2128
2129 ev_start (EV_A_ (W)w, ++preparecnt);
2130 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2131 prepares [preparecnt - 1] = w;
2132}
2133
2134void
2135ev_prepare_stop (EV_P_ ev_prepare *w)
2136{
2137 clear_pending (EV_A_ (W)w);
2138 if (expect_false (!ev_is_active (w)))
2139 return;
2140
2141 {
2142 int active = ((W)w)->active;
2143 prepares [active - 1] = prepares [--preparecnt];
2144 ((W)prepares [active - 1])->active = active;
2145 }
2146
2147 ev_stop (EV_A_ (W)w);
2148}
2149
2150void
2151ev_check_start (EV_P_ ev_check *w)
2152{
2153 if (expect_false (ev_is_active (w)))
2154 return;
2155
2156 ev_start (EV_A_ (W)w, ++checkcnt);
2157 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2158 checks [checkcnt - 1] = w;
2159}
2160
2161void
2162ev_check_stop (EV_P_ ev_check *w)
2163{
2164 clear_pending (EV_A_ (W)w);
2165 if (expect_false (!ev_is_active (w)))
2166 return;
2167
2168 {
2169 int active = ((W)w)->active;
2170 checks [active - 1] = checks [--checkcnt];
2171 ((W)checks [active - 1])->active = active;
2172 }
2173
2174 ev_stop (EV_A_ (W)w);
2175}
2176
2177#if EV_EMBED_ENABLE
2178void noinline
2179ev_embed_sweep (EV_P_ ev_embed *w)
2180{
2181 ev_loop (w->loop, EVLOOP_NONBLOCK);
2182}
2183
2184static void
2185embed_cb (EV_P_ ev_io *io, int revents)
2186{
2187 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2188
2189 if (ev_cb (w))
2190 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2191 else
2192 ev_embed_sweep (loop, w);
2193}
2194
2195void
2196ev_embed_start (EV_P_ ev_embed *w)
2197{
2198 if (expect_false (ev_is_active (w)))
2199 return;
2200
2201 {
2202 struct ev_loop *loop = w->loop;
2203 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2204 ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
2205 }
2206
2207 ev_set_priority (&w->io, ev_priority (w));
2208 ev_io_start (EV_A_ &w->io);
2209
2210 ev_start (EV_A_ (W)w, 1);
2211}
2212
2213void
2214ev_embed_stop (EV_P_ ev_embed *w)
2215{
2216 clear_pending (EV_A_ (W)w);
2217 if (expect_false (!ev_is_active (w)))
2218 return;
2219
2220 ev_io_stop (EV_A_ &w->io);
2221
2222 ev_stop (EV_A_ (W)w);
2223}
2224#endif
2225
2226#if EV_FORK_ENABLE
2227void
2228ev_fork_start (EV_P_ ev_fork *w)
2229{
2230 if (expect_false (ev_is_active (w)))
2231 return;
2232
2233 ev_start (EV_A_ (W)w, ++forkcnt);
2234 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2235 forks [forkcnt - 1] = w;
2236}
2237
2238void
2239ev_fork_stop (EV_P_ ev_fork *w)
2240{
2241 clear_pending (EV_A_ (W)w);
2242 if (expect_false (!ev_is_active (w)))
2243 return;
2244
2245 {
2246 int active = ((W)w)->active;
2247 forks [active - 1] = forks [--forkcnt];
2248 ((W)forks [active - 1])->active = active;
2249 }
2250
2251 ev_stop (EV_A_ (W)w);
2252}
2253#endif
2254
1293/*****************************************************************************/ 2255/*****************************************************************************/
1294 2256
1295struct ev_once 2257struct ev_once
1296{ 2258{
1297 struct ev_io io; 2259 ev_io io;
1298 struct ev_timer to; 2260 ev_timer to;
1299 void (*cb)(int revents, void *arg); 2261 void (*cb)(int revents, void *arg);
1300 void *arg; 2262 void *arg;
1301}; 2263};
1302 2264
1303static void 2265static void
… …
1306 void (*cb)(int revents, void *arg) = once->cb; 2268 void (*cb)(int revents, void *arg) = once->cb;
1307 void *arg = once->arg; 2269 void *arg = once->arg;
1308 2270
1309 ev_io_stop (EV_A_ &once->io); 2271 ev_io_stop (EV_A_ &once->io);
1310 ev_timer_stop (EV_A_ &once->to); 2272 ev_timer_stop (EV_A_ &once->to);
1311 free (once); 2273 ev_free (once);
1312 2274
1313 cb (revents, arg); 2275 cb (revents, arg);
1314} 2276}
1315 2277
1316static void 2278static void
1317once_cb_io (EV_P_ struct ev_io *w, int revents) 2279once_cb_io (EV_P_ ev_io *w, int revents)
1318{ 2280{
1319 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 2281 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1320} 2282}
1321 2283
1322static void 2284static void
1323once_cb_to (EV_P_ struct ev_timer *w, int revents) 2285once_cb_to (EV_P_ ev_timer *w, int revents)
1324{ 2286{
1325 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 2287 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1326} 2288}
1327 2289
1328void 2290void
1329ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 2291ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1330{ 2292{
1331 struct ev_once *once = malloc (sizeof (struct ev_once)); 2293 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1332 2294
1333 if (!once) 2295 if (expect_false (!once))
2296 {
1334 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 2297 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1335 else 2298 return;
1336 { 2299 }
2300
1337 once->cb = cb; 2301 once->cb = cb;
1338 once->arg = arg; 2302 once->arg = arg;
1339 2303
1340 ev_watcher_init (&once->io, once_cb_io); 2304 ev_init (&once->io, once_cb_io);
1341 if (fd >= 0) 2305 if (fd >= 0)
1342 { 2306 {
1343 ev_io_set (&once->io, fd, events); 2307 ev_io_set (&once->io, fd, events);
1344 ev_io_start (EV_A_ &once->io); 2308 ev_io_start (EV_A_ &once->io);
1345 } 2309 }
1346 2310
1347 ev_watcher_init (&once->to, once_cb_to); 2311 ev_init (&once->to, once_cb_to);
1348 if (timeout >= 0.) 2312 if (timeout >= 0.)
1349 { 2313 {
1350 ev_timer_set (&once->to, timeout, 0.); 2314 ev_timer_set (&once->to, timeout, 0.);
1351 ev_timer_start (EV_A_ &once->to); 2315 ev_timer_start (EV_A_ &once->to);
1352 }
1353 } 2316 }
1354} 2317}
1355 2318
2319#ifdef __cplusplus
2320}
2321#endif
2322

Diff Legend

– Removed lines
+ Added lines
< Changed lines
> Changed lines