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Comparing libev/ev.c (file contents):
Revision 1.63 by root, Sun Nov 4 22:03:17 2007 UTC vs.
Revision 1.167 by root, Sat Dec 8 04:02:31 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
33 42
34# if HAVE_CLOCK_GETTIME 43# if HAVE_CLOCK_GETTIME
44# ifndef EV_USE_MONOTONIC
35# define EV_USE_MONOTONIC 1 45# define EV_USE_MONOTONIC 1
46# endif
47# ifndef EV_USE_REALTIME
36# define EV_USE_REALTIME 1 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
37# endif 57# endif
38 58
59# ifndef EV_USE_SELECT
39# if HAVE_SELECT && HAVE_SYS_SELECT_H 60# if HAVE_SELECT && HAVE_SYS_SELECT_H
40# define EV_USE_SELECT 1 61# define EV_USE_SELECT 1
62# else
63# define EV_USE_SELECT 0
64# endif
41# endif 65# endif
42 66
67# ifndef EV_USE_POLL
43# if HAVE_POLL && HAVE_POLL_H 68# if HAVE_POLL && HAVE_POLL_H
44# define EV_USE_POLL 1 69# define EV_USE_POLL 1
70# else
71# define EV_USE_POLL 0
72# endif
45# endif 73# endif
46 74
75# ifndef EV_USE_EPOLL
47# if HAVE_EPOLL && HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H 76# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
48# define EV_USE_EPOLL 1 77# define EV_USE_EPOLL 1
78# else
79# define EV_USE_EPOLL 0
80# endif
49# endif 81# endif
50 82
83# ifndef EV_USE_KQUEUE
51# if HAVE_KQUEUE && HAVE_WORKING_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H 84# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H
52# define EV_USE_KQUEUE 1 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
53# endif 105# endif
54 106
55#endif 107#endif
56 108
57#include <math.h> 109#include <math.h>
58#include <stdlib.h> 110#include <stdlib.h>
59#include <unistd.h>
60#include <fcntl.h> 111#include <fcntl.h>
61#include <signal.h>
62#include <stddef.h> 112#include <stddef.h>
63 113
64#include <stdio.h> 114#include <stdio.h>
65 115
66#include <assert.h> 116#include <assert.h>
67#include <errno.h> 117#include <errno.h>
68#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
69#ifndef WIN32 129#ifndef _WIN32
130# include <sys/time.h>
70# 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
71#endif 138# endif
72#include <sys/time.h> 139#endif
73#include <time.h>
74 140
75/**/ 141/**/
76 142
77#ifndef EV_USE_MONOTONIC 143#ifndef EV_USE_MONOTONIC
78# 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
79#endif 149#endif
80 150
81#ifndef EV_USE_SELECT 151#ifndef EV_USE_SELECT
82# define EV_USE_SELECT 1 152# define EV_USE_SELECT 1
83#endif 153#endif
84 154
85#ifndef EV_USE_POLL 155#ifndef EV_USE_POLL
86# 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
87#endif 161#endif
88 162
89#ifndef EV_USE_EPOLL 163#ifndef EV_USE_EPOLL
90# define EV_USE_EPOLL 0 164# define EV_USE_EPOLL 0
91#endif 165#endif
92 166
93#ifndef EV_USE_KQUEUE 167#ifndef EV_USE_KQUEUE
94# define EV_USE_KQUEUE 0 168# define EV_USE_KQUEUE 0
95#endif 169#endif
96 170
171#ifndef EV_USE_PORT
172# define EV_USE_PORT 0
173#endif
174
97#ifndef EV_USE_WIN32 175#ifndef EV_USE_INOTIFY
98# ifdef WIN32 176# define EV_USE_INOTIFY 0
99# define EV_USE_WIN32 1 177#endif
178
179#ifndef EV_PID_HASHSIZE
180# if EV_MINIMAL
181# define EV_PID_HASHSIZE 1
100# else 182# else
101# define EV_USE_WIN32 0 183# define EV_PID_HASHSIZE 16
102# endif 184# endif
103#endif 185#endif
104 186
105#ifndef EV_USE_REALTIME 187#ifndef EV_INOTIFY_HASHSIZE
106# define EV_USE_REALTIME 1 188# if EV_MINIMAL
189# define EV_INOTIFY_HASHSIZE 1
190# else
191# define EV_INOTIFY_HASHSIZE 16
192# endif
107#endif 193#endif
108 194
109/**/ 195/**/
110 196
111#ifndef CLOCK_MONOTONIC 197#ifndef CLOCK_MONOTONIC
… …
116#ifndef CLOCK_REALTIME 202#ifndef CLOCK_REALTIME
117# undef EV_USE_REALTIME 203# undef EV_USE_REALTIME
118# define EV_USE_REALTIME 0 204# define EV_USE_REALTIME 0
119#endif 205#endif
120 206
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
121/**/ 219/**/
122 220
123#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 221#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
124#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */ 222#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
125#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
126/*#define CLEANUP_INTERVAL 300. /* how often to try to free memory and re-check fds */ 223/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds */
127
128#include "ev.h"
129 224
130#if __GNUC__ >= 3 225#if __GNUC__ >= 3
131# define expect(expr,value) __builtin_expect ((expr),(value)) 226# define expect(expr,value) __builtin_expect ((expr),(value))
227# define inline_size static inline /* inline for codesize */
228# if EV_MINIMAL
132# define inline inline 229# define noinline __attribute__ ((noinline))
230# define inline_speed static noinline
231# else
232# define noinline
233# define inline_speed static inline
234# endif
133#else 235#else
134# define expect(expr,value) (expr) 236# define expect(expr,value) (expr)
237# define inline_speed static
135# define inline static 238# define inline_size static
239# define noinline
136#endif 240#endif
137 241
138#define expect_false(expr) expect ((expr) != 0, 0) 242#define expect_false(expr) expect ((expr) != 0, 0)
139#define expect_true(expr) expect ((expr) != 0, 1) 243#define expect_true(expr) expect ((expr) != 0, 1)
140 244
141#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 245#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
142#define ABSPRI(w) ((w)->priority - EV_MINPRI) 246#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
143 247
248#define EMPTY /* required for microsofts broken pseudo-c compiler */
249#define EMPTY2(a,b) /* used to suppress some warnings */
250
144typedef struct ev_watcher *W; 251typedef ev_watcher *W;
145typedef struct ev_watcher_list *WL; 252typedef ev_watcher_list *WL;
146typedef struct ev_watcher_time *WT; 253typedef ev_watcher_time *WT;
147 254
148static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 255static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
149 256
257#ifdef _WIN32
258# include "ev_win32.c"
259#endif
260
150/*****************************************************************************/ 261/*****************************************************************************/
151 262
263static void (*syserr_cb)(const char *msg);
264
265void
266ev_set_syserr_cb (void (*cb)(const char *msg))
267{
268 syserr_cb = cb;
269}
270
271static void noinline
272syserr (const char *msg)
273{
274 if (!msg)
275 msg = "(libev) system error";
276
277 if (syserr_cb)
278 syserr_cb (msg);
279 else
280 {
281 perror (msg);
282 abort ();
283 }
284}
285
286static void *(*alloc)(void *ptr, long size);
287
288void
289ev_set_allocator (void *(*cb)(void *ptr, long size))
290{
291 alloc = cb;
292}
293
294inline_speed void *
295ev_realloc (void *ptr, long size)
296{
297 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
298
299 if (!ptr && size)
300 {
301 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
302 abort ();
303 }
304
305 return ptr;
306}
307
308#define ev_malloc(size) ev_realloc (0, (size))
309#define ev_free(ptr) ev_realloc ((ptr), 0)
310
311/*****************************************************************************/
312
152typedef struct 313typedef struct
153{ 314{
154 struct ev_watcher_list *head; 315 WL head;
155 unsigned char events; 316 unsigned char events;
156 unsigned char reify; 317 unsigned char reify;
318#if EV_SELECT_IS_WINSOCKET
319 SOCKET handle;
320#endif
157} ANFD; 321} ANFD;
158 322
159typedef struct 323typedef struct
160{ 324{
161 W w; 325 W w;
162 int events; 326 int events;
163} ANPENDING; 327} ANPENDING;
164 328
329#if EV_USE_INOTIFY
330typedef struct
331{
332 WL head;
333} ANFS;
334#endif
335
165#if EV_MULTIPLICITY 336#if EV_MULTIPLICITY
166 337
167struct ev_loop 338 struct ev_loop
168{ 339 {
340 ev_tstamp ev_rt_now;
341 #define ev_rt_now ((loop)->ev_rt_now)
169# define VAR(name,decl) decl; 342 #define VAR(name,decl) decl;
170# include "ev_vars.h" 343 #include "ev_vars.h"
171};
172# undef VAR 344 #undef VAR
345 };
173# include "ev_wrap.h" 346 #include "ev_wrap.h"
347
348 static struct ev_loop default_loop_struct;
349 struct ev_loop *ev_default_loop_ptr;
174 350
175#else 351#else
176 352
353 ev_tstamp ev_rt_now;
177# define VAR(name,decl) static decl; 354 #define VAR(name,decl) static decl;
178# include "ev_vars.h" 355 #include "ev_vars.h"
179# undef VAR 356 #undef VAR
357
358 static int ev_default_loop_ptr;
180 359
181#endif 360#endif
182 361
183/*****************************************************************************/ 362/*****************************************************************************/
184 363
185inline ev_tstamp 364ev_tstamp
186ev_time (void) 365ev_time (void)
187{ 366{
188#if EV_USE_REALTIME 367#if EV_USE_REALTIME
189 struct timespec ts; 368 struct timespec ts;
190 clock_gettime (CLOCK_REALTIME, &ts); 369 clock_gettime (CLOCK_REALTIME, &ts);
… …
194 gettimeofday (&tv, 0); 373 gettimeofday (&tv, 0);
195 return tv.tv_sec + tv.tv_usec * 1e-6; 374 return tv.tv_sec + tv.tv_usec * 1e-6;
196#endif 375#endif
197} 376}
198 377
199inline ev_tstamp 378ev_tstamp inline_size
200get_clock (void) 379get_clock (void)
201{ 380{
202#if EV_USE_MONOTONIC 381#if EV_USE_MONOTONIC
203 if (expect_true (have_monotonic)) 382 if (expect_true (have_monotonic))
204 { 383 {
… …
209#endif 388#endif
210 389
211 return ev_time (); 390 return ev_time ();
212} 391}
213 392
393#if EV_MULTIPLICITY
214ev_tstamp 394ev_tstamp
215ev_now (EV_P) 395ev_now (EV_P)
216{ 396{
217 return rt_now; 397 return ev_rt_now;
218} 398}
399#endif
219 400
220#define array_roundsize(base,n) ((n) | 4 & ~3) 401int inline_size
402array_nextsize (int elem, int cur, int cnt)
403{
404 int ncur = cur + 1;
221 405
406 do
407 ncur <<= 1;
408 while (cnt > ncur);
409
410 /* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */
411 if (elem * ncur > 4096)
412 {
413 ncur *= elem;
414 ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095;
415 ncur = ncur - sizeof (void *) * 4;
416 ncur /= elem;
417 }
418
419 return ncur;
420}
421
422inline_speed void *
423array_realloc (int elem, void *base, int *cur, int cnt)
424{
425 *cur = array_nextsize (elem, *cur, cnt);
426 return ev_realloc (base, elem * *cur);
427}
428
222#define array_needsize(base,cur,cnt,init) \ 429#define array_needsize(type,base,cur,cnt,init) \
223 if (expect_false ((cnt) > cur)) \ 430 if (expect_false ((cnt) > (cur))) \
224 { \ 431 { \
225 int newcnt = cur; \ 432 int ocur_ = (cur); \
226 do \ 433 (base) = (type *)array_realloc \
227 { \ 434 (sizeof (type), (base), &(cur), (cnt)); \
228 newcnt = array_roundsize (base, newcnt << 1); \ 435 init ((base) + (ocur_), (cur) - ocur_); \
229 } \ 436 }
230 while ((cnt) > newcnt); \ 437
438#if 0
439#define array_slim(type,stem) \
440 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
231 \ 441 { \
232 base = realloc (base, sizeof (*base) * (newcnt)); \ 442 stem ## max = array_roundsize (stem ## cnt >> 1); \
233 init (base + cur, newcnt - cur); \ 443 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
234 cur = newcnt; \ 444 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
235 } 445 }
446#endif
447
448#define array_free(stem, idx) \
449 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
236 450
237/*****************************************************************************/ 451/*****************************************************************************/
238 452
239static void 453void noinline
454ev_feed_event (EV_P_ void *w, int revents)
455{
456 W w_ = (W)w;
457
458 if (expect_false (w_->pending))
459 {
460 pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
461 return;
462 }
463
464 w_->pending = ++pendingcnt [ABSPRI (w_)];
465 array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
466 pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
467 pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
468}
469
470void inline_size
471queue_events (EV_P_ W *events, int eventcnt, int type)
472{
473 int i;
474
475 for (i = 0; i < eventcnt; ++i)
476 ev_feed_event (EV_A_ events [i], type);
477}
478
479/*****************************************************************************/
480
481void inline_size
240anfds_init (ANFD *base, int count) 482anfds_init (ANFD *base, int count)
241{ 483{
242 while (count--) 484 while (count--)
243 { 485 {
244 base->head = 0; 486 base->head = 0;
… …
247 489
248 ++base; 490 ++base;
249 } 491 }
250} 492}
251 493
252static void 494void inline_speed
253event (EV_P_ W w, int events)
254{
255 if (w->pending)
256 {
257 pendings [ABSPRI (w)][w->pending - 1].events |= events;
258 return;
259 }
260
261 w->pending = ++pendingcnt [ABSPRI (w)];
262 array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], );
263 pendings [ABSPRI (w)][w->pending - 1].w = w;
264 pendings [ABSPRI (w)][w->pending - 1].events = events;
265}
266
267static void
268queue_events (EV_P_ W *events, int eventcnt, int type)
269{
270 int i;
271
272 for (i = 0; i < eventcnt; ++i)
273 event (EV_A_ events [i], type);
274}
275
276static void
277fd_event (EV_P_ int fd, int events) 495fd_event (EV_P_ int fd, int revents)
278{ 496{
279 ANFD *anfd = anfds + fd; 497 ANFD *anfd = anfds + fd;
280 struct ev_io *w; 498 ev_io *w;
281 499
282 for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) 500 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
283 { 501 {
284 int ev = w->events & events; 502 int ev = w->events & revents;
285 503
286 if (ev) 504 if (ev)
287 event (EV_A_ (W)w, ev); 505 ev_feed_event (EV_A_ (W)w, ev);
288 } 506 }
289} 507}
290 508
291/*****************************************************************************/ 509void
510ev_feed_fd_event (EV_P_ int fd, int revents)
511{
512 fd_event (EV_A_ fd, revents);
513}
292 514
293static void 515void inline_size
294fd_reify (EV_P) 516fd_reify (EV_P)
295{ 517{
296 int i; 518 int i;
297 519
298 for (i = 0; i < fdchangecnt; ++i) 520 for (i = 0; i < fdchangecnt; ++i)
299 { 521 {
300 int fd = fdchanges [i]; 522 int fd = fdchanges [i];
301 ANFD *anfd = anfds + fd; 523 ANFD *anfd = anfds + fd;
302 struct ev_io *w; 524 ev_io *w;
303 525
304 int events = 0; 526 int events = 0;
305 527
306 for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) 528 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
307 events |= w->events; 529 events |= w->events;
308 530
531#if EV_SELECT_IS_WINSOCKET
532 if (events)
533 {
534 unsigned long argp;
535 anfd->handle = _get_osfhandle (fd);
536 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
537 }
538#endif
539
309 anfd->reify = 0; 540 anfd->reify = 0;
310 541
311 if (anfd->events != events)
312 {
313 method_modify (EV_A_ fd, anfd->events, events); 542 backend_modify (EV_A_ fd, anfd->events, events);
314 anfd->events = events; 543 anfd->events = events;
315 }
316 } 544 }
317 545
318 fdchangecnt = 0; 546 fdchangecnt = 0;
319} 547}
320 548
321static void 549void inline_size
322fd_change (EV_P_ int fd) 550fd_change (EV_P_ int fd)
323{ 551{
324 if (anfds [fd].reify || fdchangecnt < 0) 552 if (expect_false (anfds [fd].reify))
325 return; 553 return;
326 554
327 anfds [fd].reify = 1; 555 anfds [fd].reify = 1;
328 556
329 ++fdchangecnt; 557 ++fdchangecnt;
330 array_needsize (fdchanges, fdchangemax, fdchangecnt, ); 558 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
331 fdchanges [fdchangecnt - 1] = fd; 559 fdchanges [fdchangecnt - 1] = fd;
332} 560}
333 561
334static void 562void inline_speed
335fd_kill (EV_P_ int fd) 563fd_kill (EV_P_ int fd)
336{ 564{
337 struct ev_io *w; 565 ev_io *w;
338 566
339 while ((w = (struct ev_io *)anfds [fd].head)) 567 while ((w = (ev_io *)anfds [fd].head))
340 { 568 {
341 ev_io_stop (EV_A_ w); 569 ev_io_stop (EV_A_ w);
342 event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 570 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
343 } 571 }
572}
573
574int inline_size
575fd_valid (int fd)
576{
577#ifdef _WIN32
578 return _get_osfhandle (fd) != -1;
579#else
580 return fcntl (fd, F_GETFD) != -1;
581#endif
344} 582}
345 583
346/* called on EBADF to verify fds */ 584/* called on EBADF to verify fds */
347static void 585static void noinline
348fd_ebadf (EV_P) 586fd_ebadf (EV_P)
349{ 587{
350 int fd; 588 int fd;
351 589
352 for (fd = 0; fd < anfdmax; ++fd) 590 for (fd = 0; fd < anfdmax; ++fd)
353 if (anfds [fd].events) 591 if (anfds [fd].events)
354 if (fcntl (fd, F_GETFD) == -1 && errno == EBADF) 592 if (!fd_valid (fd) == -1 && errno == EBADF)
355 fd_kill (EV_A_ fd); 593 fd_kill (EV_A_ fd);
356} 594}
357 595
358/* called on ENOMEM in select/poll to kill some fds and retry */ 596/* called on ENOMEM in select/poll to kill some fds and retry */
359static void 597static void noinline
360fd_enomem (EV_P) 598fd_enomem (EV_P)
361{ 599{
362 int fd; 600 int fd;
363 601
364 for (fd = anfdmax; fd--; ) 602 for (fd = anfdmax; fd--; )
365 if (anfds [fd].events) 603 if (anfds [fd].events)
366 { 604 {
367 close (fd);
368 fd_kill (EV_A_ fd); 605 fd_kill (EV_A_ fd);
369 return; 606 return;
370 } 607 }
371} 608}
372 609
373/* susually called after fork if method needs to re-arm all fds from scratch */ 610/* usually called after fork if backend needs to re-arm all fds from scratch */
374static void 611static void noinline
375fd_rearm_all (EV_P) 612fd_rearm_all (EV_P)
376{ 613{
377 int fd; 614 int fd;
378 615
379 /* this should be highly optimised to not do anything but set a flag */
380 for (fd = 0; fd < anfdmax; ++fd) 616 for (fd = 0; fd < anfdmax; ++fd)
381 if (anfds [fd].events) 617 if (anfds [fd].events)
382 { 618 {
383 anfds [fd].events = 0; 619 anfds [fd].events = 0;
384 fd_change (EV_A_ fd); 620 fd_change (EV_A_ fd);
385 } 621 }
386} 622}
387 623
388/*****************************************************************************/ 624/*****************************************************************************/
389 625
390static void 626void inline_speed
391upheap (WT *heap, int k) 627upheap (WT *heap, int k)
392{ 628{
393 WT w = heap [k]; 629 WT w = heap [k];
394 630
395 while (k && heap [k >> 1]->at > w->at) 631 while (k && heap [k >> 1]->at > w->at)
… …
402 heap [k] = w; 638 heap [k] = w;
403 ((W)heap [k])->active = k + 1; 639 ((W)heap [k])->active = k + 1;
404 640
405} 641}
406 642
407static void 643void inline_speed
408downheap (WT *heap, int N, int k) 644downheap (WT *heap, int N, int k)
409{ 645{
410 WT w = heap [k]; 646 WT w = heap [k];
411 647
412 while (k < (N >> 1)) 648 while (k < (N >> 1))
… …
426 662
427 heap [k] = w; 663 heap [k] = w;
428 ((W)heap [k])->active = k + 1; 664 ((W)heap [k])->active = k + 1;
429} 665}
430 666
667void inline_size
668adjustheap (WT *heap, int N, int k)
669{
670 upheap (heap, k);
671 downheap (heap, N, k);
672}
673
431/*****************************************************************************/ 674/*****************************************************************************/
432 675
433typedef struct 676typedef struct
434{ 677{
435 struct ev_watcher_list *head; 678 WL head;
436 sig_atomic_t volatile gotsig; 679 sig_atomic_t volatile gotsig;
437} ANSIG; 680} ANSIG;
438 681
439static ANSIG *signals; 682static ANSIG *signals;
440static int signalmax; 683static int signalmax;
441 684
442static int sigpipe [2]; 685static int sigpipe [2];
443static sig_atomic_t volatile gotsig; 686static sig_atomic_t volatile gotsig;
444static struct ev_io sigev; 687static ev_io sigev;
445 688
446static void 689void inline_size
447signals_init (ANSIG *base, int count) 690signals_init (ANSIG *base, int count)
448{ 691{
449 while (count--) 692 while (count--)
450 { 693 {
451 base->head = 0; 694 base->head = 0;
… …
456} 699}
457 700
458static void 701static void
459sighandler (int signum) 702sighandler (int signum)
460{ 703{
704#if _WIN32
705 signal (signum, sighandler);
706#endif
707
461 signals [signum - 1].gotsig = 1; 708 signals [signum - 1].gotsig = 1;
462 709
463 if (!gotsig) 710 if (!gotsig)
464 { 711 {
465 int old_errno = errno; 712 int old_errno = errno;
… …
467 write (sigpipe [1], &signum, 1); 714 write (sigpipe [1], &signum, 1);
468 errno = old_errno; 715 errno = old_errno;
469 } 716 }
470} 717}
471 718
719void noinline
720ev_feed_signal_event (EV_P_ int signum)
721{
722 WL w;
723
724#if EV_MULTIPLICITY
725 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
726#endif
727
728 --signum;
729
730 if (signum < 0 || signum >= signalmax)
731 return;
732
733 signals [signum].gotsig = 0;
734
735 for (w = signals [signum].head; w; w = w->next)
736 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
737}
738
472static void 739static void
473sigcb (EV_P_ struct ev_io *iow, int revents) 740sigcb (EV_P_ ev_io *iow, int revents)
474{ 741{
475 struct ev_watcher_list *w;
476 int signum; 742 int signum;
477 743
478 read (sigpipe [0], &revents, 1); 744 read (sigpipe [0], &revents, 1);
479 gotsig = 0; 745 gotsig = 0;
480 746
481 for (signum = signalmax; signum--; ) 747 for (signum = signalmax; signum--; )
482 if (signals [signum].gotsig) 748 if (signals [signum].gotsig)
483 { 749 ev_feed_signal_event (EV_A_ signum + 1);
484 signals [signum].gotsig = 0;
485
486 for (w = signals [signum].head; w; w = w->next)
487 event (EV_A_ (W)w, EV_SIGNAL);
488 }
489} 750}
490 751
491static void 752void inline_size
753fd_intern (int fd)
754{
755#ifdef _WIN32
756 int arg = 1;
757 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
758#else
759 fcntl (fd, F_SETFD, FD_CLOEXEC);
760 fcntl (fd, F_SETFL, O_NONBLOCK);
761#endif
762}
763
764static void noinline
492siginit (EV_P) 765siginit (EV_P)
493{ 766{
494#ifndef WIN32 767 fd_intern (sigpipe [0]);
495 fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC); 768 fd_intern (sigpipe [1]);
496 fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
497
498 /* rather than sort out wether we really need nb, set it */
499 fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
500 fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
501#endif
502 769
503 ev_io_set (&sigev, sigpipe [0], EV_READ); 770 ev_io_set (&sigev, sigpipe [0], EV_READ);
504 ev_io_start (EV_A_ &sigev); 771 ev_io_start (EV_A_ &sigev);
505 ev_unref (EV_A); /* child watcher should not keep loop alive */ 772 ev_unref (EV_A); /* child watcher should not keep loop alive */
506} 773}
507 774
508/*****************************************************************************/ 775/*****************************************************************************/
509 776
777static ev_child *childs [EV_PID_HASHSIZE];
778
510#ifndef WIN32 779#ifndef _WIN32
511 780
512static struct ev_child *childs [PID_HASHSIZE];
513static struct ev_signal childev; 781static ev_signal childev;
782
783void inline_speed
784child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
785{
786 ev_child *w;
787
788 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
789 if (w->pid == pid || !w->pid)
790 {
791 ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */
792 w->rpid = pid;
793 w->rstatus = status;
794 ev_feed_event (EV_A_ (W)w, EV_CHILD);
795 }
796}
514 797
515#ifndef WCONTINUED 798#ifndef WCONTINUED
516# define WCONTINUED 0 799# define WCONTINUED 0
517#endif 800#endif
518 801
519static void 802static void
520child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
521{
522 struct ev_child *w;
523
524 for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
525 if (w->pid == pid || !w->pid)
526 {
527 ev_priority (w) = ev_priority (sw); /* need to do it *now* */
528 w->rpid = pid;
529 w->rstatus = status;
530 event (EV_A_ (W)w, EV_CHILD);
531 }
532}
533
534static void
535childcb (EV_P_ struct ev_signal *sw, int revents) 803childcb (EV_P_ ev_signal *sw, int revents)
536{ 804{
537 int pid, status; 805 int pid, status;
538 806
807 /* some systems define WCONTINUED but then fail to support it (linux 2.4) */
539 if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) 808 if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
540 { 809 if (!WCONTINUED
810 || errno != EINVAL
811 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
812 return;
813
541 /* make sure we are called again until all childs have been reaped */ 814 /* make sure we are called again until all childs have been reaped */
815 /* we need to do it this way so that the callback gets called before we continue */
542 event (EV_A_ (W)sw, EV_SIGNAL); 816 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
543 817
544 child_reap (EV_A_ sw, pid, pid, status); 818 child_reap (EV_A_ sw, pid, pid, status);
819 if (EV_PID_HASHSIZE > 1)
545 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */ 820 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
546 }
547} 821}
548 822
549#endif 823#endif
550 824
551/*****************************************************************************/ 825/*****************************************************************************/
552 826
827#if EV_USE_PORT
828# include "ev_port.c"
829#endif
553#if EV_USE_KQUEUE 830#if EV_USE_KQUEUE
554# include "ev_kqueue.c" 831# include "ev_kqueue.c"
555#endif 832#endif
556#if EV_USE_EPOLL 833#if EV_USE_EPOLL
557# include "ev_epoll.c" 834# include "ev_epoll.c"
… …
574{ 851{
575 return EV_VERSION_MINOR; 852 return EV_VERSION_MINOR;
576} 853}
577 854
578/* return true if we are running with elevated privileges and should ignore env variables */ 855/* return true if we are running with elevated privileges and should ignore env variables */
579static int 856int inline_size
580enable_secure (void) 857enable_secure (void)
581{ 858{
582#ifdef WIN32 859#ifdef _WIN32
583 return 0; 860 return 0;
584#else 861#else
585 return getuid () != geteuid () 862 return getuid () != geteuid ()
586 || getgid () != getegid (); 863 || getgid () != getegid ();
587#endif 864#endif
588} 865}
589 866
590int 867unsigned int
591ev_method (EV_P) 868ev_supported_backends (void)
592{ 869{
593 return method; 870 unsigned int flags = 0;
594}
595 871
596static void 872 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
597loop_init (EV_P_ int methods) 873 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
874 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
875 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
876 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
877
878 return flags;
879}
880
881unsigned int
882ev_recommended_backends (void)
598{ 883{
599 if (!method) 884 unsigned int flags = ev_supported_backends ();
885
886#ifndef __NetBSD__
887 /* kqueue is borked on everything but netbsd apparently */
888 /* it usually doesn't work correctly on anything but sockets and pipes */
889 flags &= ~EVBACKEND_KQUEUE;
890#endif
891#ifdef __APPLE__
892 // flags &= ~EVBACKEND_KQUEUE; for documentation
893 flags &= ~EVBACKEND_POLL;
894#endif
895
896 return flags;
897}
898
899unsigned int
900ev_embeddable_backends (void)
901{
902 return EVBACKEND_EPOLL
903 | EVBACKEND_KQUEUE
904 | EVBACKEND_PORT;
905}
906
907unsigned int
908ev_backend (EV_P)
909{
910 return backend;
911}
912
913unsigned int
914ev_loop_count (EV_P)
915{
916 return loop_count;
917}
918
919static void noinline
920loop_init (EV_P_ unsigned int flags)
921{
922 if (!backend)
600 { 923 {
601#if EV_USE_MONOTONIC 924#if EV_USE_MONOTONIC
602 { 925 {
603 struct timespec ts; 926 struct timespec ts;
604 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 927 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
605 have_monotonic = 1; 928 have_monotonic = 1;
606 } 929 }
607#endif 930#endif
608 931
609 rt_now = ev_time (); 932 ev_rt_now = ev_time ();
610 mn_now = get_clock (); 933 mn_now = get_clock ();
611 now_floor = mn_now; 934 now_floor = mn_now;
612 rtmn_diff = rt_now - mn_now; 935 rtmn_diff = ev_rt_now - mn_now;
613 936
614 if (methods == EVMETHOD_AUTO) 937 /* pid check not overridable via env */
615 if (!enable_secure () && getenv ("LIBEV_METHODS")) 938#ifndef _WIN32
939 if (flags & EVFLAG_FORKCHECK)
940 curpid = getpid ();
941#endif
942
943 if (!(flags & EVFLAG_NOENV)
944 && !enable_secure ()
945 && getenv ("LIBEV_FLAGS"))
616 methods = atoi (getenv ("LIBEV_METHODS")); 946 flags = atoi (getenv ("LIBEV_FLAGS"));
617 else
618 methods = EVMETHOD_ANY;
619 947
620 method = 0; 948 if (!(flags & 0x0000ffffUL))
949 flags |= ev_recommended_backends ();
950
951 backend = 0;
952 backend_fd = -1;
621#if EV_USE_WIN32 953#if EV_USE_INOTIFY
622 if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods); 954 fs_fd = -2;
955#endif
956
957#if EV_USE_PORT
958 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
623#endif 959#endif
624#if EV_USE_KQUEUE 960#if EV_USE_KQUEUE
625 if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods); 961 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
626#endif 962#endif
627#if EV_USE_EPOLL 963#if EV_USE_EPOLL
628 if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods); 964 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
629#endif 965#endif
630#if EV_USE_POLL 966#if EV_USE_POLL
631 if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods); 967 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
632#endif 968#endif
633#if EV_USE_SELECT 969#if EV_USE_SELECT
634 if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods); 970 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
635#endif 971#endif
636 }
637}
638 972
639void 973 ev_init (&sigev, sigcb);
974 ev_set_priority (&sigev, EV_MAXPRI);
975 }
976}
977
978static void noinline
640loop_destroy (EV_P) 979loop_destroy (EV_P)
641{ 980{
981 int i;
982
642#if EV_USE_WIN32 983#if EV_USE_INOTIFY
643 if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A); 984 if (fs_fd >= 0)
985 close (fs_fd);
986#endif
987
988 if (backend_fd >= 0)
989 close (backend_fd);
990
991#if EV_USE_PORT
992 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
644#endif 993#endif
645#if EV_USE_KQUEUE 994#if EV_USE_KQUEUE
646 if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A); 995 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
647#endif 996#endif
648#if EV_USE_EPOLL 997#if EV_USE_EPOLL
649 if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A); 998 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
650#endif 999#endif
651#if EV_USE_POLL 1000#if EV_USE_POLL
652 if (method == EVMETHOD_POLL ) poll_destroy (EV_A); 1001 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
653#endif 1002#endif
654#if EV_USE_SELECT 1003#if EV_USE_SELECT
655 if (method == EVMETHOD_SELECT) select_destroy (EV_A); 1004 if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
656#endif 1005#endif
657 1006
658 method = 0; 1007 for (i = NUMPRI; i--; )
659 /*TODO*/ 1008 {
660} 1009 array_free (pending, [i]);
1010#if EV_IDLE_ENABLE
1011 array_free (idle, [i]);
1012#endif
1013 }
661 1014
662void 1015 /* have to use the microsoft-never-gets-it-right macro */
1016 array_free (fdchange, EMPTY);
1017 array_free (timer, EMPTY);
1018#if EV_PERIODIC_ENABLE
1019 array_free (periodic, EMPTY);
1020#endif
1021 array_free (prepare, EMPTY);
1022 array_free (check, EMPTY);
1023
1024 backend = 0;
1025}
1026
1027void inline_size infy_fork (EV_P);
1028
1029void inline_size
663loop_fork (EV_P) 1030loop_fork (EV_P)
664{ 1031{
665 /*TODO*/ 1032#if EV_USE_PORT
1033 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1034#endif
1035#if EV_USE_KQUEUE
1036 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
1037#endif
666#if EV_USE_EPOLL 1038#if EV_USE_EPOLL
667 if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A); 1039 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
668#endif 1040#endif
669#if EV_USE_KQUEUE 1041#if EV_USE_INOTIFY
670 if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A); 1042 infy_fork (EV_A);
671#endif 1043#endif
1044
1045 if (ev_is_active (&sigev))
1046 {
1047 /* default loop */
1048
1049 ev_ref (EV_A);
1050 ev_io_stop (EV_A_ &sigev);
1051 close (sigpipe [0]);
1052 close (sigpipe [1]);
1053
1054 while (pipe (sigpipe))
1055 syserr ("(libev) error creating pipe");
1056
1057 siginit (EV_A);
1058 }
1059
1060 postfork = 0;
672} 1061}
673 1062
674#if EV_MULTIPLICITY 1063#if EV_MULTIPLICITY
675struct ev_loop * 1064struct ev_loop *
676ev_loop_new (int methods) 1065ev_loop_new (unsigned int flags)
677{ 1066{
678 struct ev_loop *loop = (struct ev_loop *)calloc (1, sizeof (struct ev_loop)); 1067 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
679 1068
1069 memset (loop, 0, sizeof (struct ev_loop));
1070
680 loop_init (EV_A_ methods); 1071 loop_init (EV_A_ flags);
681 1072
682 if (ev_method (EV_A)) 1073 if (ev_backend (EV_A))
683 return loop; 1074 return loop;
684 1075
685 return 0; 1076 return 0;
686} 1077}
687 1078
688void 1079void
689ev_loop_destroy (EV_P) 1080ev_loop_destroy (EV_P)
690{ 1081{
691 loop_destroy (EV_A); 1082 loop_destroy (EV_A);
692 free (loop); 1083 ev_free (loop);
693} 1084}
694 1085
695void 1086void
696ev_loop_fork (EV_P) 1087ev_loop_fork (EV_P)
697{ 1088{
698 loop_fork (EV_A); 1089 postfork = 1;
699} 1090}
700 1091
701#endif 1092#endif
702 1093
703#if EV_MULTIPLICITY 1094#if EV_MULTIPLICITY
704struct ev_loop default_loop_struct;
705static struct ev_loop *default_loop;
706
707struct ev_loop * 1095struct ev_loop *
1096ev_default_loop_init (unsigned int flags)
708#else 1097#else
709static int default_loop;
710
711int 1098int
1099ev_default_loop (unsigned int flags)
712#endif 1100#endif
713ev_default_loop (int methods)
714{ 1101{
715 if (sigpipe [0] == sigpipe [1]) 1102 if (sigpipe [0] == sigpipe [1])
716 if (pipe (sigpipe)) 1103 if (pipe (sigpipe))
717 return 0; 1104 return 0;
718 1105
719 if (!default_loop) 1106 if (!ev_default_loop_ptr)
720 { 1107 {
721#if EV_MULTIPLICITY 1108#if EV_MULTIPLICITY
722 struct ev_loop *loop = default_loop = &default_loop_struct; 1109 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
723#else 1110#else
724 default_loop = 1; 1111 ev_default_loop_ptr = 1;
725#endif 1112#endif
726 1113
727 loop_init (EV_A_ methods); 1114 loop_init (EV_A_ flags);
728 1115
729 if (ev_method (EV_A)) 1116 if (ev_backend (EV_A))
730 { 1117 {
731 ev_watcher_init (&sigev, sigcb);
732 ev_set_priority (&sigev, EV_MAXPRI);
733 siginit (EV_A); 1118 siginit (EV_A);
734 1119
735#ifndef WIN32 1120#ifndef _WIN32
736 ev_signal_init (&childev, childcb, SIGCHLD); 1121 ev_signal_init (&childev, childcb, SIGCHLD);
737 ev_set_priority (&childev, EV_MAXPRI); 1122 ev_set_priority (&childev, EV_MAXPRI);
738 ev_signal_start (EV_A_ &childev); 1123 ev_signal_start (EV_A_ &childev);
739 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1124 ev_unref (EV_A); /* child watcher should not keep loop alive */
740#endif 1125#endif
741 } 1126 }
742 else 1127 else
743 default_loop = 0; 1128 ev_default_loop_ptr = 0;
744 } 1129 }
745 1130
746 return default_loop; 1131 return ev_default_loop_ptr;
747} 1132}
748 1133
749void 1134void
750ev_default_destroy (void) 1135ev_default_destroy (void)
751{ 1136{
752#if EV_MULTIPLICITY 1137#if EV_MULTIPLICITY
753 struct ev_loop *loop = default_loop; 1138 struct ev_loop *loop = ev_default_loop_ptr;
754#endif 1139#endif
755 1140
1141#ifndef _WIN32
756 ev_ref (EV_A); /* child watcher */ 1142 ev_ref (EV_A); /* child watcher */
757 ev_signal_stop (EV_A_ &childev); 1143 ev_signal_stop (EV_A_ &childev);
1144#endif
758 1145
759 ev_ref (EV_A); /* signal watcher */ 1146 ev_ref (EV_A); /* signal watcher */
760 ev_io_stop (EV_A_ &sigev); 1147 ev_io_stop (EV_A_ &sigev);
761 1148
762 close (sigpipe [0]); sigpipe [0] = 0; 1149 close (sigpipe [0]); sigpipe [0] = 0;
… …
767 1154
768void 1155void
769ev_default_fork (void) 1156ev_default_fork (void)
770{ 1157{
771#if EV_MULTIPLICITY 1158#if EV_MULTIPLICITY
772 struct ev_loop *loop = default_loop; 1159 struct ev_loop *loop = ev_default_loop_ptr;
773#endif 1160#endif
774 1161
775 loop_fork (EV_A); 1162 if (backend)
776 1163 postfork = 1;
777 ev_io_stop (EV_A_ &sigev);
778 close (sigpipe [0]);
779 close (sigpipe [1]);
780 pipe (sigpipe);
781
782 ev_ref (EV_A); /* signal watcher */
783 siginit (EV_A);
784} 1164}
785 1165
786/*****************************************************************************/ 1166/*****************************************************************************/
787 1167
788static void 1168void inline_speed
789call_pending (EV_P) 1169call_pending (EV_P)
790{ 1170{
791 int pri; 1171 int pri;
792 1172
793 for (pri = NUMPRI; pri--; ) 1173 for (pri = NUMPRI; pri--; )
794 while (pendingcnt [pri]) 1174 while (pendingcnt [pri])
795 { 1175 {
796 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 1176 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
797 1177
798 if (p->w) 1178 if (expect_true (p->w))
799 { 1179 {
1180 /*assert (("non-pending watcher on pending list", p->w->pending));*/
1181
800 p->w->pending = 0; 1182 p->w->pending = 0;
801 1183 EV_CB_INVOKE (p->w, p->events);
802 (*(void (**)(EV_P_ W, int))&p->w->cb) (EV_A_ p->w, p->events);
803 } 1184 }
804 } 1185 }
805} 1186}
806 1187
807static void 1188void inline_size
808timers_reify (EV_P) 1189timers_reify (EV_P)
809{ 1190{
810 while (timercnt && ((WT)timers [0])->at <= mn_now) 1191 while (timercnt && ((WT)timers [0])->at <= mn_now)
811 { 1192 {
812 struct ev_timer *w = timers [0]; 1193 ev_timer *w = timers [0];
813 1194
814 assert (("inactive timer on timer heap detected", ev_is_active (w))); 1195 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
815 1196
816 /* first reschedule or stop timer */ 1197 /* first reschedule or stop timer */
817 if (w->repeat) 1198 if (w->repeat)
818 { 1199 {
819 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 1200 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1201
820 ((WT)w)->at = mn_now + w->repeat; 1202 ((WT)w)->at += w->repeat;
1203 if (((WT)w)->at < mn_now)
1204 ((WT)w)->at = mn_now;
1205
821 downheap ((WT *)timers, timercnt, 0); 1206 downheap ((WT *)timers, timercnt, 0);
822 } 1207 }
823 else 1208 else
824 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ 1209 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
825 1210
826 event (EV_A_ (W)w, EV_TIMEOUT); 1211 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
827 } 1212 }
828} 1213}
829 1214
830static void 1215#if EV_PERIODIC_ENABLE
1216void inline_size
831periodics_reify (EV_P) 1217periodics_reify (EV_P)
832{ 1218{
833 while (periodiccnt && ((WT)periodics [0])->at <= rt_now) 1219 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
834 { 1220 {
835 struct ev_periodic *w = periodics [0]; 1221 ev_periodic *w = periodics [0];
836 1222
837 assert (("inactive timer on periodic heap detected", ev_is_active (w))); 1223 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
838 1224
839 /* first reschedule or stop timer */ 1225 /* first reschedule or stop timer */
840 if (w->interval) 1226 if (w->reschedule_cb)
841 { 1227 {
1228 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
1229 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1230 downheap ((WT *)periodics, periodiccnt, 0);
1231 }
1232 else if (w->interval)
1233 {
842 ((WT)w)->at += floor ((rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval; 1234 ((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
843 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > rt_now)); 1235 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
844 downheap ((WT *)periodics, periodiccnt, 0); 1236 downheap ((WT *)periodics, periodiccnt, 0);
845 } 1237 }
846 else 1238 else
847 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 1239 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
848 1240
849 event (EV_A_ (W)w, EV_PERIODIC); 1241 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
850 } 1242 }
851} 1243}
852 1244
853static void 1245static void noinline
854periodics_reschedule (EV_P) 1246periodics_reschedule (EV_P)
855{ 1247{
856 int i; 1248 int i;
857 1249
858 /* adjust periodics after time jump */ 1250 /* adjust periodics after time jump */
859 for (i = 0; i < periodiccnt; ++i) 1251 for (i = 0; i < periodiccnt; ++i)
860 { 1252 {
861 struct ev_periodic *w = periodics [i]; 1253 ev_periodic *w = periodics [i];
862 1254
1255 if (w->reschedule_cb)
1256 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
863 if (w->interval) 1257 else if (w->interval)
1258 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
1259 }
1260
1261 /* now rebuild the heap */
1262 for (i = periodiccnt >> 1; i--; )
1263 downheap ((WT *)periodics, periodiccnt, i);
1264}
1265#endif
1266
1267#if EV_IDLE_ENABLE
1268void inline_size
1269idle_reify (EV_P)
1270{
1271 if (expect_false (idleall))
1272 {
1273 int pri;
1274
1275 for (pri = NUMPRI; pri--; )
864 { 1276 {
865 ev_tstamp diff = ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval; 1277 if (pendingcnt [pri])
1278 break;
866 1279
867 if (fabs (diff) >= 1e-4) 1280 if (idlecnt [pri])
868 { 1281 {
869 ev_periodic_stop (EV_A_ w); 1282 queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
870 ev_periodic_start (EV_A_ w); 1283 break;
871
872 i = 0; /* restart loop, inefficient, but time jumps should be rare */
873 } 1284 }
874 } 1285 }
875 } 1286 }
876} 1287}
1288#endif
877 1289
878inline int 1290int inline_size
879time_update_monotonic (EV_P) 1291time_update_monotonic (EV_P)
880{ 1292{
881 mn_now = get_clock (); 1293 mn_now = get_clock ();
882 1294
883 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 1295 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
884 { 1296 {
885 rt_now = rtmn_diff + mn_now; 1297 ev_rt_now = rtmn_diff + mn_now;
886 return 0; 1298 return 0;
887 } 1299 }
888 else 1300 else
889 { 1301 {
890 now_floor = mn_now; 1302 now_floor = mn_now;
891 rt_now = ev_time (); 1303 ev_rt_now = ev_time ();
892 return 1; 1304 return 1;
893 } 1305 }
894} 1306}
895 1307
896static void 1308void inline_size
897time_update (EV_P) 1309time_update (EV_P)
898{ 1310{
899 int i; 1311 int i;
900 1312
901#if EV_USE_MONOTONIC 1313#if EV_USE_MONOTONIC
… …
903 { 1315 {
904 if (time_update_monotonic (EV_A)) 1316 if (time_update_monotonic (EV_A))
905 { 1317 {
906 ev_tstamp odiff = rtmn_diff; 1318 ev_tstamp odiff = rtmn_diff;
907 1319
908 for (i = 4; --i; ) /* loop a few times, before making important decisions */ 1320 /* loop a few times, before making important decisions.
1321 * on the choice of "4": one iteration isn't enough,
1322 * in case we get preempted during the calls to
1323 * ev_time and get_clock. a second call is almost guaranteed
1324 * to succeed in that case, though. and looping a few more times
1325 * doesn't hurt either as we only do this on time-jumps or
1326 * in the unlikely event of having been preempted here.
1327 */
1328 for (i = 4; --i; )
909 { 1329 {
910 rtmn_diff = rt_now - mn_now; 1330 rtmn_diff = ev_rt_now - mn_now;
911 1331
912 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) 1332 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
913 return; /* all is well */ 1333 return; /* all is well */
914 1334
915 rt_now = ev_time (); 1335 ev_rt_now = ev_time ();
916 mn_now = get_clock (); 1336 mn_now = get_clock ();
917 now_floor = mn_now; 1337 now_floor = mn_now;
918 } 1338 }
919 1339
1340# if EV_PERIODIC_ENABLE
920 periodics_reschedule (EV_A); 1341 periodics_reschedule (EV_A);
1342# endif
921 /* no timer adjustment, as the monotonic clock doesn't jump */ 1343 /* no timer adjustment, as the monotonic clock doesn't jump */
922 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */ 1344 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
923 } 1345 }
924 } 1346 }
925 else 1347 else
926#endif 1348#endif
927 { 1349 {
928 rt_now = ev_time (); 1350 ev_rt_now = ev_time ();
929 1351
930 if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP)) 1352 if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
931 { 1353 {
1354#if EV_PERIODIC_ENABLE
932 periodics_reschedule (EV_A); 1355 periodics_reschedule (EV_A);
1356#endif
933 1357
934 /* adjust timers. this is easy, as the offset is the same for all */ 1358 /* adjust timers. this is easy, as the offset is the same for all of them */
935 for (i = 0; i < timercnt; ++i) 1359 for (i = 0; i < timercnt; ++i)
936 ((WT)timers [i])->at += rt_now - mn_now; 1360 ((WT)timers [i])->at += ev_rt_now - mn_now;
937 } 1361 }
938 1362
939 mn_now = rt_now; 1363 mn_now = ev_rt_now;
940 } 1364 }
941} 1365}
942 1366
943void 1367void
944ev_ref (EV_P) 1368ev_ref (EV_P)
… …
955static int loop_done; 1379static int loop_done;
956 1380
957void 1381void
958ev_loop (EV_P_ int flags) 1382ev_loop (EV_P_ int flags)
959{ 1383{
960 double block;
961 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0; 1384 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
1385 ? EVUNLOOP_ONE
1386 : EVUNLOOP_CANCEL;
1387
1388 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
962 1389
963 do 1390 do
964 { 1391 {
1392#ifndef _WIN32
1393 if (expect_false (curpid)) /* penalise the forking check even more */
1394 if (expect_false (getpid () != curpid))
1395 {
1396 curpid = getpid ();
1397 postfork = 1;
1398 }
1399#endif
1400
1401#if EV_FORK_ENABLE
1402 /* we might have forked, so queue fork handlers */
1403 if (expect_false (postfork))
1404 if (forkcnt)
1405 {
1406 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1407 call_pending (EV_A);
1408 }
1409#endif
1410
965 /* queue check watchers (and execute them) */ 1411 /* queue check watchers (and execute them) */
966 if (expect_false (preparecnt)) 1412 if (expect_false (preparecnt))
967 { 1413 {
968 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 1414 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
969 call_pending (EV_A); 1415 call_pending (EV_A);
970 } 1416 }
971 1417
1418 if (expect_false (!activecnt))
1419 break;
1420
1421 /* we might have forked, so reify kernel state if necessary */
1422 if (expect_false (postfork))
1423 loop_fork (EV_A);
1424
972 /* update fd-related kernel structures */ 1425 /* update fd-related kernel structures */
973 fd_reify (EV_A); 1426 fd_reify (EV_A);
974 1427
975 /* calculate blocking time */ 1428 /* calculate blocking time */
1429 {
1430 ev_tstamp block;
976 1431
977 /* we only need this for !monotonic clockor timers, but as we basically 1432 if (expect_false (flags & EVLOOP_NONBLOCK || idleall || !activecnt))
978 always have timers, we just calculate it always */ 1433 block = 0.; /* do not block at all */
1434 else
1435 {
1436 /* update time to cancel out callback processing overhead */
979#if EV_USE_MONOTONIC 1437#if EV_USE_MONOTONIC
980 if (expect_true (have_monotonic)) 1438 if (expect_true (have_monotonic))
981 time_update_monotonic (EV_A); 1439 time_update_monotonic (EV_A);
982 else 1440 else
983#endif 1441#endif
984 { 1442 {
985 rt_now = ev_time (); 1443 ev_rt_now = ev_time ();
986 mn_now = rt_now; 1444 mn_now = ev_rt_now;
987 } 1445 }
988 1446
989 if (flags & EVLOOP_NONBLOCK || idlecnt)
990 block = 0.;
991 else
992 {
993 block = MAX_BLOCKTIME; 1447 block = MAX_BLOCKTIME;
994 1448
995 if (timercnt) 1449 if (timercnt)
996 { 1450 {
997 ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge; 1451 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
998 if (block > to) block = to; 1452 if (block > to) block = to;
999 } 1453 }
1000 1454
1455#if EV_PERIODIC_ENABLE
1001 if (periodiccnt) 1456 if (periodiccnt)
1002 { 1457 {
1003 ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge; 1458 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1004 if (block > to) block = to; 1459 if (block > to) block = to;
1005 } 1460 }
1461#endif
1006 1462
1007 if (block < 0.) block = 0.; 1463 if (expect_false (block < 0.)) block = 0.;
1008 } 1464 }
1009 1465
1466 ++loop_count;
1010 method_poll (EV_A_ block); 1467 backend_poll (EV_A_ block);
1468 }
1011 1469
1012 /* update rt_now, do magic */ 1470 /* update ev_rt_now, do magic */
1013 time_update (EV_A); 1471 time_update (EV_A);
1014 1472
1015 /* queue pending timers and reschedule them */ 1473 /* queue pending timers and reschedule them */
1016 timers_reify (EV_A); /* relative timers called last */ 1474 timers_reify (EV_A); /* relative timers called last */
1475#if EV_PERIODIC_ENABLE
1017 periodics_reify (EV_A); /* absolute timers called first */ 1476 periodics_reify (EV_A); /* absolute timers called first */
1477#endif
1018 1478
1479#if EV_IDLE_ENABLE
1019 /* queue idle watchers unless io or timers are pending */ 1480 /* queue idle watchers unless other events are pending */
1020 if (!pendingcnt) 1481 idle_reify (EV_A);
1021 queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); 1482#endif
1022 1483
1023 /* queue check watchers, to be executed first */ 1484 /* queue check watchers, to be executed first */
1024 if (checkcnt) 1485 if (expect_false (checkcnt))
1025 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 1486 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1026 1487
1027 call_pending (EV_A); 1488 call_pending (EV_A);
1489
1028 } 1490 }
1029 while (activecnt && !loop_done); 1491 while (expect_true (activecnt && !loop_done));
1030 1492
1031 if (loop_done != 2) 1493 if (loop_done == EVUNLOOP_ONE)
1032 loop_done = 0; 1494 loop_done = EVUNLOOP_CANCEL;
1033} 1495}
1034 1496
1035void 1497void
1036ev_unloop (EV_P_ int how) 1498ev_unloop (EV_P_ int how)
1037{ 1499{
1038 loop_done = how; 1500 loop_done = how;
1039} 1501}
1040 1502
1041/*****************************************************************************/ 1503/*****************************************************************************/
1042 1504
1043inline void 1505void inline_size
1044wlist_add (WL *head, WL elem) 1506wlist_add (WL *head, WL elem)
1045{ 1507{
1046 elem->next = *head; 1508 elem->next = *head;
1047 *head = elem; 1509 *head = elem;
1048} 1510}
1049 1511
1050inline void 1512void inline_size
1051wlist_del (WL *head, WL elem) 1513wlist_del (WL *head, WL elem)
1052{ 1514{
1053 while (*head) 1515 while (*head)
1054 { 1516 {
1055 if (*head == elem) 1517 if (*head == elem)
… …
1060 1522
1061 head = &(*head)->next; 1523 head = &(*head)->next;
1062 } 1524 }
1063} 1525}
1064 1526
1065inline void 1527void inline_speed
1066ev_clear_pending (EV_P_ W w) 1528clear_pending (EV_P_ W w)
1067{ 1529{
1068 if (w->pending) 1530 if (w->pending)
1069 { 1531 {
1070 pendings [ABSPRI (w)][w->pending - 1].w = 0; 1532 pendings [ABSPRI (w)][w->pending - 1].w = 0;
1071 w->pending = 0; 1533 w->pending = 0;
1072 } 1534 }
1073} 1535}
1074 1536
1075inline void 1537int
1538ev_clear_pending (EV_P_ void *w)
1539{
1540 W w_ = (W)w;
1541 int pending = w_->pending;
1542
1543 if (!pending)
1544 return 0;
1545
1546 w_->pending = 0;
1547 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
1548 p->w = 0;
1549
1550 return p->events;
1551}
1552
1553void inline_size
1554pri_adjust (EV_P_ W w)
1555{
1556 int pri = w->priority;
1557 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1558 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1559 w->priority = pri;
1560}
1561
1562void inline_speed
1076ev_start (EV_P_ W w, int active) 1563ev_start (EV_P_ W w, int active)
1077{ 1564{
1078 if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; 1565 pri_adjust (EV_A_ w);
1079 if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1080
1081 w->active = active; 1566 w->active = active;
1082 ev_ref (EV_A); 1567 ev_ref (EV_A);
1083} 1568}
1084 1569
1085inline void 1570void inline_size
1086ev_stop (EV_P_ W w) 1571ev_stop (EV_P_ W w)
1087{ 1572{
1088 ev_unref (EV_A); 1573 ev_unref (EV_A);
1089 w->active = 0; 1574 w->active = 0;
1090} 1575}
1091 1576
1092/*****************************************************************************/ 1577/*****************************************************************************/
1093 1578
1094void 1579void
1095ev_io_start (EV_P_ struct ev_io *w) 1580ev_io_start (EV_P_ ev_io *w)
1096{ 1581{
1097 int fd = w->fd; 1582 int fd = w->fd;
1098 1583
1099 if (ev_is_active (w)) 1584 if (expect_false (ev_is_active (w)))
1100 return; 1585 return;
1101 1586
1102 assert (("ev_io_start called with negative fd", fd >= 0)); 1587 assert (("ev_io_start called with negative fd", fd >= 0));
1103 1588
1104 ev_start (EV_A_ (W)w, 1); 1589 ev_start (EV_A_ (W)w, 1);
1105 array_needsize (anfds, anfdmax, fd + 1, anfds_init); 1590 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1106 wlist_add ((WL *)&anfds[fd].head, (WL)w); 1591 wlist_add ((WL *)&anfds[fd].head, (WL)w);
1107 1592
1108 fd_change (EV_A_ fd); 1593 fd_change (EV_A_ fd);
1109} 1594}
1110 1595
1111void 1596void
1112ev_io_stop (EV_P_ struct ev_io *w) 1597ev_io_stop (EV_P_ ev_io *w)
1113{ 1598{
1114 ev_clear_pending (EV_A_ (W)w); 1599 clear_pending (EV_A_ (W)w);
1115 if (!ev_is_active (w)) 1600 if (expect_false (!ev_is_active (w)))
1116 return; 1601 return;
1602
1603 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1117 1604
1118 wlist_del ((WL *)&anfds[w->fd].head, (WL)w); 1605 wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
1119 ev_stop (EV_A_ (W)w); 1606 ev_stop (EV_A_ (W)w);
1120 1607
1121 fd_change (EV_A_ w->fd); 1608 fd_change (EV_A_ w->fd);
1122} 1609}
1123 1610
1124void 1611void
1125ev_timer_start (EV_P_ struct ev_timer *w) 1612ev_timer_start (EV_P_ ev_timer *w)
1126{ 1613{
1127 if (ev_is_active (w)) 1614 if (expect_false (ev_is_active (w)))
1128 return; 1615 return;
1129 1616
1130 ((WT)w)->at += mn_now; 1617 ((WT)w)->at += mn_now;
1131 1618
1132 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 1619 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1133 1620
1134 ev_start (EV_A_ (W)w, ++timercnt); 1621 ev_start (EV_A_ (W)w, ++timercnt);
1135 array_needsize (timers, timermax, timercnt, ); 1622 array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);
1136 timers [timercnt - 1] = w; 1623 timers [timercnt - 1] = w;
1137 upheap ((WT *)timers, timercnt - 1); 1624 upheap ((WT *)timers, timercnt - 1);
1138 1625
1626 /*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
1627}
1628
1629void
1630ev_timer_stop (EV_P_ ev_timer *w)
1631{
1632 clear_pending (EV_A_ (W)w);
1633 if (expect_false (!ev_is_active (w)))
1634 return;
1635
1139 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 1636 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1140}
1141 1637
1142void 1638 {
1143ev_timer_stop (EV_P_ struct ev_timer *w) 1639 int active = ((W)w)->active;
1144{
1145 ev_clear_pending (EV_A_ (W)w);
1146 if (!ev_is_active (w))
1147 return;
1148 1640
1149 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 1641 if (expect_true (--active < --timercnt))
1150
1151 if (((W)w)->active < timercnt--)
1152 { 1642 {
1153 timers [((W)w)->active - 1] = timers [timercnt]; 1643 timers [active] = timers [timercnt];
1154 downheap ((WT *)timers, timercnt, ((W)w)->active - 1); 1644 adjustheap ((WT *)timers, timercnt, active);
1155 } 1645 }
1646 }
1156 1647
1157 ((WT)w)->at = w->repeat; 1648 ((WT)w)->at -= mn_now;
1158 1649
1159 ev_stop (EV_A_ (W)w); 1650 ev_stop (EV_A_ (W)w);
1160} 1651}
1161 1652
1162void 1653void
1163ev_timer_again (EV_P_ struct ev_timer *w) 1654ev_timer_again (EV_P_ ev_timer *w)
1164{ 1655{
1165 if (ev_is_active (w)) 1656 if (ev_is_active (w))
1166 { 1657 {
1167 if (w->repeat) 1658 if (w->repeat)
1168 { 1659 {
1169 ((WT)w)->at = mn_now + w->repeat; 1660 ((WT)w)->at = mn_now + w->repeat;
1170 downheap ((WT *)timers, timercnt, ((W)w)->active - 1); 1661 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1171 } 1662 }
1172 else 1663 else
1173 ev_timer_stop (EV_A_ w); 1664 ev_timer_stop (EV_A_ w);
1174 } 1665 }
1175 else if (w->repeat) 1666 else if (w->repeat)
1667 {
1668 w->at = w->repeat;
1176 ev_timer_start (EV_A_ w); 1669 ev_timer_start (EV_A_ w);
1670 }
1177} 1671}
1178 1672
1673#if EV_PERIODIC_ENABLE
1179void 1674void
1180ev_periodic_start (EV_P_ struct ev_periodic *w) 1675ev_periodic_start (EV_P_ ev_periodic *w)
1181{ 1676{
1182 if (ev_is_active (w)) 1677 if (expect_false (ev_is_active (w)))
1183 return; 1678 return;
1184 1679
1680 if (w->reschedule_cb)
1681 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1682 else if (w->interval)
1683 {
1185 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 1684 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1186
1187 /* this formula differs from the one in periodic_reify because we do not always round up */ 1685 /* this formula differs from the one in periodic_reify because we do not always round up */
1188 if (w->interval)
1189 ((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval; 1686 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
1687 }
1190 1688
1191 ev_start (EV_A_ (W)w, ++periodiccnt); 1689 ev_start (EV_A_ (W)w, ++periodiccnt);
1192 array_needsize (periodics, periodicmax, periodiccnt, ); 1690 array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1193 periodics [periodiccnt - 1] = w; 1691 periodics [periodiccnt - 1] = w;
1194 upheap ((WT *)periodics, periodiccnt - 1); 1692 upheap ((WT *)periodics, periodiccnt - 1);
1195 1693
1694 /*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
1695}
1696
1697void
1698ev_periodic_stop (EV_P_ ev_periodic *w)
1699{
1700 clear_pending (EV_A_ (W)w);
1701 if (expect_false (!ev_is_active (w)))
1702 return;
1703
1196 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1704 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1197}
1198 1705
1199void 1706 {
1200ev_periodic_stop (EV_P_ struct ev_periodic *w) 1707 int active = ((W)w)->active;
1201{
1202 ev_clear_pending (EV_A_ (W)w);
1203 if (!ev_is_active (w))
1204 return;
1205 1708
1206 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1709 if (expect_true (--active < --periodiccnt))
1207
1208 if (((W)w)->active < periodiccnt--)
1209 { 1710 {
1210 periodics [((W)w)->active - 1] = periodics [periodiccnt]; 1711 periodics [active] = periodics [periodiccnt];
1211 downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1); 1712 adjustheap ((WT *)periodics, periodiccnt, active);
1212 } 1713 }
1714 }
1213 1715
1214 ev_stop (EV_A_ (W)w); 1716 ev_stop (EV_A_ (W)w);
1215} 1717}
1216 1718
1217void 1719void
1218ev_idle_start (EV_P_ struct ev_idle *w) 1720ev_periodic_again (EV_P_ ev_periodic *w)
1219{ 1721{
1220 if (ev_is_active (w)) 1722 /* TODO: use adjustheap and recalculation */
1221 return;
1222
1223 ev_start (EV_A_ (W)w, ++idlecnt);
1224 array_needsize (idles, idlemax, idlecnt, );
1225 idles [idlecnt - 1] = w;
1226}
1227
1228void
1229ev_idle_stop (EV_P_ struct ev_idle *w)
1230{
1231 ev_clear_pending (EV_A_ (W)w);
1232 if (ev_is_active (w))
1233 return;
1234
1235 idles [((W)w)->active - 1] = idles [--idlecnt];
1236 ev_stop (EV_A_ (W)w); 1723 ev_periodic_stop (EV_A_ w);
1724 ev_periodic_start (EV_A_ w);
1237} 1725}
1238 1726#endif
1239void
1240ev_prepare_start (EV_P_ struct ev_prepare *w)
1241{
1242 if (ev_is_active (w))
1243 return;
1244
1245 ev_start (EV_A_ (W)w, ++preparecnt);
1246 array_needsize (prepares, preparemax, preparecnt, );
1247 prepares [preparecnt - 1] = w;
1248}
1249
1250void
1251ev_prepare_stop (EV_P_ struct ev_prepare *w)
1252{
1253 ev_clear_pending (EV_A_ (W)w);
1254 if (ev_is_active (w))
1255 return;
1256
1257 prepares [((W)w)->active - 1] = prepares [--preparecnt];
1258 ev_stop (EV_A_ (W)w);
1259}
1260
1261void
1262ev_check_start (EV_P_ struct ev_check *w)
1263{
1264 if (ev_is_active (w))
1265 return;
1266
1267 ev_start (EV_A_ (W)w, ++checkcnt);
1268 array_needsize (checks, checkmax, checkcnt, );
1269 checks [checkcnt - 1] = w;
1270}
1271
1272void
1273ev_check_stop (EV_P_ struct ev_check *w)
1274{
1275 ev_clear_pending (EV_A_ (W)w);
1276 if (ev_is_active (w))
1277 return;
1278
1279 checks [((W)w)->active - 1] = checks [--checkcnt];
1280 ev_stop (EV_A_ (W)w);
1281}
1282 1727
1283#ifndef SA_RESTART 1728#ifndef SA_RESTART
1284# define SA_RESTART 0 1729# define SA_RESTART 0
1285#endif 1730#endif
1286 1731
1287void 1732void
1288ev_signal_start (EV_P_ struct ev_signal *w) 1733ev_signal_start (EV_P_ ev_signal *w)
1289{ 1734{
1290#if EV_MULTIPLICITY 1735#if EV_MULTIPLICITY
1291 assert (("signal watchers are only supported in the default loop", loop == default_loop)); 1736 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1292#endif 1737#endif
1293 if (ev_is_active (w)) 1738 if (expect_false (ev_is_active (w)))
1294 return; 1739 return;
1295 1740
1296 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 1741 assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1297 1742
1298 ev_start (EV_A_ (W)w, 1); 1743 ev_start (EV_A_ (W)w, 1);
1299 array_needsize (signals, signalmax, w->signum, signals_init); 1744 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1300 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); 1745 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1301 1746
1302 if (!((WL)w)->next) 1747 if (!((WL)w)->next)
1303 { 1748 {
1749#if _WIN32
1750 signal (w->signum, sighandler);
1751#else
1304 struct sigaction sa; 1752 struct sigaction sa;
1305 sa.sa_handler = sighandler; 1753 sa.sa_handler = sighandler;
1306 sigfillset (&sa.sa_mask); 1754 sigfillset (&sa.sa_mask);
1307 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 1755 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1308 sigaction (w->signum, &sa, 0); 1756 sigaction (w->signum, &sa, 0);
1757#endif
1309 } 1758 }
1310} 1759}
1311 1760
1312void 1761void
1313ev_signal_stop (EV_P_ struct ev_signal *w) 1762ev_signal_stop (EV_P_ ev_signal *w)
1314{ 1763{
1315 ev_clear_pending (EV_A_ (W)w); 1764 clear_pending (EV_A_ (W)w);
1316 if (!ev_is_active (w)) 1765 if (expect_false (!ev_is_active (w)))
1317 return; 1766 return;
1318 1767
1319 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); 1768 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1320 ev_stop (EV_A_ (W)w); 1769 ev_stop (EV_A_ (W)w);
1321 1770
1322 if (!signals [w->signum - 1].head) 1771 if (!signals [w->signum - 1].head)
1323 signal (w->signum, SIG_DFL); 1772 signal (w->signum, SIG_DFL);
1324} 1773}
1325 1774
1326void 1775void
1327ev_child_start (EV_P_ struct ev_child *w) 1776ev_child_start (EV_P_ ev_child *w)
1328{ 1777{
1329#if EV_MULTIPLICITY 1778#if EV_MULTIPLICITY
1330 assert (("child watchers are only supported in the default loop", loop == default_loop)); 1779 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1331#endif 1780#endif
1332 if (ev_is_active (w)) 1781 if (expect_false (ev_is_active (w)))
1333 return; 1782 return;
1334 1783
1335 ev_start (EV_A_ (W)w, 1); 1784 ev_start (EV_A_ (W)w, 1);
1336 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1785 wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1337} 1786}
1338 1787
1339void 1788void
1340ev_child_stop (EV_P_ struct ev_child *w) 1789ev_child_stop (EV_P_ ev_child *w)
1341{ 1790{
1342 ev_clear_pending (EV_A_ (W)w); 1791 clear_pending (EV_A_ (W)w);
1343 if (ev_is_active (w)) 1792 if (expect_false (!ev_is_active (w)))
1344 return; 1793 return;
1345 1794
1346 wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1795 wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1347 ev_stop (EV_A_ (W)w); 1796 ev_stop (EV_A_ (W)w);
1348} 1797}
1349 1798
1799#if EV_STAT_ENABLE
1800
1801# ifdef _WIN32
1802# undef lstat
1803# define lstat(a,b) _stati64 (a,b)
1804# endif
1805
1806#define DEF_STAT_INTERVAL 5.0074891
1807#define MIN_STAT_INTERVAL 0.1074891
1808
1809static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
1810
1811#if EV_USE_INOTIFY
1812# define EV_INOTIFY_BUFSIZE 8192
1813
1814static void noinline
1815infy_add (EV_P_ ev_stat *w)
1816{
1817 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);
1818
1819 if (w->wd < 0)
1820 {
1821 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
1822
1823 /* monitor some parent directory for speedup hints */
1824 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
1825 {
1826 char path [4096];
1827 strcpy (path, w->path);
1828
1829 do
1830 {
1831 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
1832 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
1833
1834 char *pend = strrchr (path, '/');
1835
1836 if (!pend)
1837 break; /* whoops, no '/', complain to your admin */
1838
1839 *pend = 0;
1840 w->wd = inotify_add_watch (fs_fd, path, mask);
1841 }
1842 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
1843 }
1844 }
1845 else
1846 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
1847
1848 if (w->wd >= 0)
1849 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
1850}
1851
1852static void noinline
1853infy_del (EV_P_ ev_stat *w)
1854{
1855 int slot;
1856 int wd = w->wd;
1857
1858 if (wd < 0)
1859 return;
1860
1861 w->wd = -2;
1862 slot = wd & (EV_INOTIFY_HASHSIZE - 1);
1863 wlist_del (&fs_hash [slot].head, (WL)w);
1864
1865 /* remove this watcher, if others are watching it, they will rearm */
1866 inotify_rm_watch (fs_fd, wd);
1867}
1868
1869static void noinline
1870infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
1871{
1872 if (slot < 0)
1873 /* overflow, need to check for all hahs slots */
1874 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
1875 infy_wd (EV_A_ slot, wd, ev);
1876 else
1877 {
1878 WL w_;
1879
1880 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
1881 {
1882 ev_stat *w = (ev_stat *)w_;
1883 w_ = w_->next; /* lets us remove this watcher and all before it */
1884
1885 if (w->wd == wd || wd == -1)
1886 {
1887 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
1888 {
1889 w->wd = -1;
1890 infy_add (EV_A_ w); /* re-add, no matter what */
1891 }
1892
1893 stat_timer_cb (EV_A_ &w->timer, 0);
1894 }
1895 }
1896 }
1897}
1898
1899static void
1900infy_cb (EV_P_ ev_io *w, int revents)
1901{
1902 char buf [EV_INOTIFY_BUFSIZE];
1903 struct inotify_event *ev = (struct inotify_event *)buf;
1904 int ofs;
1905 int len = read (fs_fd, buf, sizeof (buf));
1906
1907 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
1908 infy_wd (EV_A_ ev->wd, ev->wd, ev);
1909}
1910
1911void inline_size
1912infy_init (EV_P)
1913{
1914 if (fs_fd != -2)
1915 return;
1916
1917 fs_fd = inotify_init ();
1918
1919 if (fs_fd >= 0)
1920 {
1921 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
1922 ev_set_priority (&fs_w, EV_MAXPRI);
1923 ev_io_start (EV_A_ &fs_w);
1924 }
1925}
1926
1927void inline_size
1928infy_fork (EV_P)
1929{
1930 int slot;
1931
1932 if (fs_fd < 0)
1933 return;
1934
1935 close (fs_fd);
1936 fs_fd = inotify_init ();
1937
1938 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
1939 {
1940 WL w_ = fs_hash [slot].head;
1941 fs_hash [slot].head = 0;
1942
1943 while (w_)
1944 {
1945 ev_stat *w = (ev_stat *)w_;
1946 w_ = w_->next; /* lets us add this watcher */
1947
1948 w->wd = -1;
1949
1950 if (fs_fd >= 0)
1951 infy_add (EV_A_ w); /* re-add, no matter what */
1952 else
1953 ev_timer_start (EV_A_ &w->timer);
1954 }
1955
1956 }
1957}
1958
1959#endif
1960
1961void
1962ev_stat_stat (EV_P_ ev_stat *w)
1963{
1964 if (lstat (w->path, &w->attr) < 0)
1965 w->attr.st_nlink = 0;
1966 else if (!w->attr.st_nlink)
1967 w->attr.st_nlink = 1;
1968}
1969
1970static void noinline
1971stat_timer_cb (EV_P_ ev_timer *w_, int revents)
1972{
1973 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
1974
1975 /* we copy this here each the time so that */
1976 /* prev has the old value when the callback gets invoked */
1977 w->prev = w->attr;
1978 ev_stat_stat (EV_A_ w);
1979
1980 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
1981 if (
1982 w->prev.st_dev != w->attr.st_dev
1983 || w->prev.st_ino != w->attr.st_ino
1984 || w->prev.st_mode != w->attr.st_mode
1985 || w->prev.st_nlink != w->attr.st_nlink
1986 || w->prev.st_uid != w->attr.st_uid
1987 || w->prev.st_gid != w->attr.st_gid
1988 || w->prev.st_rdev != w->attr.st_rdev
1989 || w->prev.st_size != w->attr.st_size
1990 || w->prev.st_atime != w->attr.st_atime
1991 || w->prev.st_mtime != w->attr.st_mtime
1992 || w->prev.st_ctime != w->attr.st_ctime
1993 ) {
1994 #if EV_USE_INOTIFY
1995 infy_del (EV_A_ w);
1996 infy_add (EV_A_ w);
1997 ev_stat_stat (EV_A_ w); /* avoid race... */
1998 #endif
1999
2000 ev_feed_event (EV_A_ w, EV_STAT);
2001 }
2002}
2003
2004void
2005ev_stat_start (EV_P_ ev_stat *w)
2006{
2007 if (expect_false (ev_is_active (w)))
2008 return;
2009
2010 /* since we use memcmp, we need to clear any padding data etc. */
2011 memset (&w->prev, 0, sizeof (ev_statdata));
2012 memset (&w->attr, 0, sizeof (ev_statdata));
2013
2014 ev_stat_stat (EV_A_ w);
2015
2016 if (w->interval < MIN_STAT_INTERVAL)
2017 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2018
2019 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
2020 ev_set_priority (&w->timer, ev_priority (w));
2021
2022#if EV_USE_INOTIFY
2023 infy_init (EV_A);
2024
2025 if (fs_fd >= 0)
2026 infy_add (EV_A_ w);
2027 else
2028#endif
2029 ev_timer_start (EV_A_ &w->timer);
2030
2031 ev_start (EV_A_ (W)w, 1);
2032}
2033
2034void
2035ev_stat_stop (EV_P_ ev_stat *w)
2036{
2037 clear_pending (EV_A_ (W)w);
2038 if (expect_false (!ev_is_active (w)))
2039 return;
2040
2041#if EV_USE_INOTIFY
2042 infy_del (EV_A_ w);
2043#endif
2044 ev_timer_stop (EV_A_ &w->timer);
2045
2046 ev_stop (EV_A_ (W)w);
2047}
2048#endif
2049
2050#if EV_IDLE_ENABLE
2051void
2052ev_idle_start (EV_P_ ev_idle *w)
2053{
2054 if (expect_false (ev_is_active (w)))
2055 return;
2056
2057 pri_adjust (EV_A_ (W)w);
2058
2059 {
2060 int active = ++idlecnt [ABSPRI (w)];
2061
2062 ++idleall;
2063 ev_start (EV_A_ (W)w, active);
2064
2065 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2066 idles [ABSPRI (w)][active - 1] = w;
2067 }
2068}
2069
2070void
2071ev_idle_stop (EV_P_ ev_idle *w)
2072{
2073 clear_pending (EV_A_ (W)w);
2074 if (expect_false (!ev_is_active (w)))
2075 return;
2076
2077 {
2078 int active = ((W)w)->active;
2079
2080 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2081 ((W)idles [ABSPRI (w)][active - 1])->active = active;
2082
2083 ev_stop (EV_A_ (W)w);
2084 --idleall;
2085 }
2086}
2087#endif
2088
2089void
2090ev_prepare_start (EV_P_ ev_prepare *w)
2091{
2092 if (expect_false (ev_is_active (w)))
2093 return;
2094
2095 ev_start (EV_A_ (W)w, ++preparecnt);
2096 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2097 prepares [preparecnt - 1] = w;
2098}
2099
2100void
2101ev_prepare_stop (EV_P_ ev_prepare *w)
2102{
2103 clear_pending (EV_A_ (W)w);
2104 if (expect_false (!ev_is_active (w)))
2105 return;
2106
2107 {
2108 int active = ((W)w)->active;
2109 prepares [active - 1] = prepares [--preparecnt];
2110 ((W)prepares [active - 1])->active = active;
2111 }
2112
2113 ev_stop (EV_A_ (W)w);
2114}
2115
2116void
2117ev_check_start (EV_P_ ev_check *w)
2118{
2119 if (expect_false (ev_is_active (w)))
2120 return;
2121
2122 ev_start (EV_A_ (W)w, ++checkcnt);
2123 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2124 checks [checkcnt - 1] = w;
2125}
2126
2127void
2128ev_check_stop (EV_P_ ev_check *w)
2129{
2130 clear_pending (EV_A_ (W)w);
2131 if (expect_false (!ev_is_active (w)))
2132 return;
2133
2134 {
2135 int active = ((W)w)->active;
2136 checks [active - 1] = checks [--checkcnt];
2137 ((W)checks [active - 1])->active = active;
2138 }
2139
2140 ev_stop (EV_A_ (W)w);
2141}
2142
2143#if EV_EMBED_ENABLE
2144void noinline
2145ev_embed_sweep (EV_P_ ev_embed *w)
2146{
2147 ev_loop (w->loop, EVLOOP_NONBLOCK);
2148}
2149
2150static void
2151embed_cb (EV_P_ ev_io *io, int revents)
2152{
2153 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2154
2155 if (ev_cb (w))
2156 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2157 else
2158 ev_embed_sweep (loop, w);
2159}
2160
2161void
2162ev_embed_start (EV_P_ ev_embed *w)
2163{
2164 if (expect_false (ev_is_active (w)))
2165 return;
2166
2167 {
2168 struct ev_loop *loop = w->loop;
2169 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2170 ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
2171 }
2172
2173 ev_set_priority (&w->io, ev_priority (w));
2174 ev_io_start (EV_A_ &w->io);
2175
2176 ev_start (EV_A_ (W)w, 1);
2177}
2178
2179void
2180ev_embed_stop (EV_P_ ev_embed *w)
2181{
2182 clear_pending (EV_A_ (W)w);
2183 if (expect_false (!ev_is_active (w)))
2184 return;
2185
2186 ev_io_stop (EV_A_ &w->io);
2187
2188 ev_stop (EV_A_ (W)w);
2189}
2190#endif
2191
2192#if EV_FORK_ENABLE
2193void
2194ev_fork_start (EV_P_ ev_fork *w)
2195{
2196 if (expect_false (ev_is_active (w)))
2197 return;
2198
2199 ev_start (EV_A_ (W)w, ++forkcnt);
2200 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2201 forks [forkcnt - 1] = w;
2202}
2203
2204void
2205ev_fork_stop (EV_P_ ev_fork *w)
2206{
2207 clear_pending (EV_A_ (W)w);
2208 if (expect_false (!ev_is_active (w)))
2209 return;
2210
2211 {
2212 int active = ((W)w)->active;
2213 forks [active - 1] = forks [--forkcnt];
2214 ((W)forks [active - 1])->active = active;
2215 }
2216
2217 ev_stop (EV_A_ (W)w);
2218}
2219#endif
2220
1350/*****************************************************************************/ 2221/*****************************************************************************/
1351 2222
1352struct ev_once 2223struct ev_once
1353{ 2224{
1354 struct ev_io io; 2225 ev_io io;
1355 struct ev_timer to; 2226 ev_timer to;
1356 void (*cb)(int revents, void *arg); 2227 void (*cb)(int revents, void *arg);
1357 void *arg; 2228 void *arg;
1358}; 2229};
1359 2230
1360static void 2231static void
… …
1363 void (*cb)(int revents, void *arg) = once->cb; 2234 void (*cb)(int revents, void *arg) = once->cb;
1364 void *arg = once->arg; 2235 void *arg = once->arg;
1365 2236
1366 ev_io_stop (EV_A_ &once->io); 2237 ev_io_stop (EV_A_ &once->io);
1367 ev_timer_stop (EV_A_ &once->to); 2238 ev_timer_stop (EV_A_ &once->to);
1368 free (once); 2239 ev_free (once);
1369 2240
1370 cb (revents, arg); 2241 cb (revents, arg);
1371} 2242}
1372 2243
1373static void 2244static void
1374once_cb_io (EV_P_ struct ev_io *w, int revents) 2245once_cb_io (EV_P_ ev_io *w, int revents)
1375{ 2246{
1376 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 2247 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1377} 2248}
1378 2249
1379static void 2250static void
1380once_cb_to (EV_P_ struct ev_timer *w, int revents) 2251once_cb_to (EV_P_ ev_timer *w, int revents)
1381{ 2252{
1382 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 2253 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1383} 2254}
1384 2255
1385void 2256void
1386ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 2257ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1387{ 2258{
1388 struct ev_once *once = malloc (sizeof (struct ev_once)); 2259 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1389 2260
1390 if (!once) 2261 if (expect_false (!once))
2262 {
1391 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 2263 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1392 else 2264 return;
1393 { 2265 }
2266
1394 once->cb = cb; 2267 once->cb = cb;
1395 once->arg = arg; 2268 once->arg = arg;
1396 2269
1397 ev_watcher_init (&once->io, once_cb_io); 2270 ev_init (&once->io, once_cb_io);
1398 if (fd >= 0) 2271 if (fd >= 0)
1399 { 2272 {
1400 ev_io_set (&once->io, fd, events); 2273 ev_io_set (&once->io, fd, events);
1401 ev_io_start (EV_A_ &once->io); 2274 ev_io_start (EV_A_ &once->io);
1402 } 2275 }
1403 2276
1404 ev_watcher_init (&once->to, once_cb_to); 2277 ev_init (&once->to, once_cb_to);
1405 if (timeout >= 0.) 2278 if (timeout >= 0.)
1406 { 2279 {
1407 ev_timer_set (&once->to, timeout, 0.); 2280 ev_timer_set (&once->to, timeout, 0.);
1408 ev_timer_start (EV_A_ &once->to); 2281 ev_timer_start (EV_A_ &once->to);
1409 }
1410 } 2282 }
1411} 2283}
1412 2284
2285#ifdef __cplusplus
2286}
2287#endif
2288

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