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Comparing libev/ev.c (file contents):
Revision 1.67 by root, Mon Nov 5 16:42:15 2007 UTC vs.
Revision 1.176 by root, Tue Dec 11 04:31:55 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
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 * and intervals up to 20 years.
228 * Better solutions welcome.
229 */
230#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
231
123#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 232#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
124#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */ 233#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
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 */ 234/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
127
128#include "ev.h"
129 235
130#if __GNUC__ >= 3 236#if __GNUC__ >= 3
131# define expect(expr,value) __builtin_expect ((expr),(value)) 237# define expect(expr,value) __builtin_expect ((expr),(value))
132# define inline inline 238# define noinline __attribute__ ((noinline))
133#else 239#else
134# define expect(expr,value) (expr) 240# define expect(expr,value) (expr)
135# define inline static 241# define noinline
242# if __STDC_VERSION__ < 199901L
243# define inline
244# endif
136#endif 245#endif
137 246
138#define expect_false(expr) expect ((expr) != 0, 0) 247#define expect_false(expr) expect ((expr) != 0, 0)
139#define expect_true(expr) expect ((expr) != 0, 1) 248#define expect_true(expr) expect ((expr) != 0, 1)
249#define inline_size static inline
250
251#if EV_MINIMAL
252# define inline_speed static noinline
253#else
254# define inline_speed static inline
255#endif
140 256
141#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 257#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
142#define ABSPRI(w) ((w)->priority - EV_MINPRI) 258#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
143 259
260#define EMPTY /* required for microsofts broken pseudo-c compiler */
261#define EMPTY2(a,b) /* used to suppress some warnings */
262
144typedef struct ev_watcher *W; 263typedef ev_watcher *W;
145typedef struct ev_watcher_list *WL; 264typedef ev_watcher_list *WL;
146typedef struct ev_watcher_time *WT; 265typedef ev_watcher_time *WT;
147 266
148static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 267static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
149 268
150#if WIN32 269#ifdef _WIN32
151/* note: the comment below could not be substantiated, but what would I care */ 270# include "ev_win32.c"
152/* MSDN says this is required to handle SIGFPE */
153volatile double SIGFPE_REQ = 0.0f;
154#endif 271#endif
155 272
156/*****************************************************************************/ 273/*****************************************************************************/
157 274
275static void (*syserr_cb)(const char *msg);
276
277void
278ev_set_syserr_cb (void (*cb)(const char *msg))
279{
280 syserr_cb = cb;
281}
282
283static void noinline
284syserr (const char *msg)
285{
286 if (!msg)
287 msg = "(libev) system error";
288
289 if (syserr_cb)
290 syserr_cb (msg);
291 else
292 {
293 perror (msg);
294 abort ();
295 }
296}
297
298static void *(*alloc)(void *ptr, long size);
299
300void
301ev_set_allocator (void *(*cb)(void *ptr, long size))
302{
303 alloc = cb;
304}
305
306inline_speed void *
307ev_realloc (void *ptr, long size)
308{
309 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
310
311 if (!ptr && size)
312 {
313 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
314 abort ();
315 }
316
317 return ptr;
318}
319
320#define ev_malloc(size) ev_realloc (0, (size))
321#define ev_free(ptr) ev_realloc ((ptr), 0)
322
323/*****************************************************************************/
324
158typedef struct 325typedef struct
159{ 326{
160 struct ev_watcher_list *head; 327 WL head;
161 unsigned char events; 328 unsigned char events;
162 unsigned char reify; 329 unsigned char reify;
330#if EV_SELECT_IS_WINSOCKET
331 SOCKET handle;
332#endif
163} ANFD; 333} ANFD;
164 334
165typedef struct 335typedef struct
166{ 336{
167 W w; 337 W w;
168 int events; 338 int events;
169} ANPENDING; 339} ANPENDING;
170 340
341#if EV_USE_INOTIFY
342typedef struct
343{
344 WL head;
345} ANFS;
346#endif
347
171#if EV_MULTIPLICITY 348#if EV_MULTIPLICITY
172 349
173struct ev_loop 350 struct ev_loop
174{ 351 {
352 ev_tstamp ev_rt_now;
353 #define ev_rt_now ((loop)->ev_rt_now)
175# define VAR(name,decl) decl; 354 #define VAR(name,decl) decl;
176# include "ev_vars.h" 355 #include "ev_vars.h"
177};
178# undef VAR 356 #undef VAR
357 };
179# include "ev_wrap.h" 358 #include "ev_wrap.h"
359
360 static struct ev_loop default_loop_struct;
361 struct ev_loop *ev_default_loop_ptr;
180 362
181#else 363#else
182 364
365 ev_tstamp ev_rt_now;
183# define VAR(name,decl) static decl; 366 #define VAR(name,decl) static decl;
184# include "ev_vars.h" 367 #include "ev_vars.h"
185# undef VAR 368 #undef VAR
369
370 static int ev_default_loop_ptr;
186 371
187#endif 372#endif
188 373
189/*****************************************************************************/ 374/*****************************************************************************/
190 375
191inline ev_tstamp 376ev_tstamp
192ev_time (void) 377ev_time (void)
193{ 378{
194#if EV_USE_REALTIME 379#if EV_USE_REALTIME
195 struct timespec ts; 380 struct timespec ts;
196 clock_gettime (CLOCK_REALTIME, &ts); 381 clock_gettime (CLOCK_REALTIME, &ts);
… …
200 gettimeofday (&tv, 0); 385 gettimeofday (&tv, 0);
201 return tv.tv_sec + tv.tv_usec * 1e-6; 386 return tv.tv_sec + tv.tv_usec * 1e-6;
202#endif 387#endif
203} 388}
204 389
205inline ev_tstamp 390ev_tstamp inline_size
206get_clock (void) 391get_clock (void)
207{ 392{
208#if EV_USE_MONOTONIC 393#if EV_USE_MONOTONIC
209 if (expect_true (have_monotonic)) 394 if (expect_true (have_monotonic))
210 { 395 {
… …
215#endif 400#endif
216 401
217 return ev_time (); 402 return ev_time ();
218} 403}
219 404
405#if EV_MULTIPLICITY
220ev_tstamp 406ev_tstamp
221ev_now (EV_P) 407ev_now (EV_P)
222{ 408{
223 return rt_now; 409 return ev_rt_now;
224} 410}
411#endif
225 412
226#define array_roundsize(base,n) ((n) | 4 & ~3) 413int inline_size
414array_nextsize (int elem, int cur, int cnt)
415{
416 int ncur = cur + 1;
227 417
418 do
419 ncur <<= 1;
420 while (cnt > ncur);
421
422 /* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */
423 if (elem * ncur > 4096)
424 {
425 ncur *= elem;
426 ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095;
427 ncur = ncur - sizeof (void *) * 4;
428 ncur /= elem;
429 }
430
431 return ncur;
432}
433
434static noinline void *
435array_realloc (int elem, void *base, int *cur, int cnt)
436{
437 *cur = array_nextsize (elem, *cur, cnt);
438 return ev_realloc (base, elem * *cur);
439}
440
228#define array_needsize(base,cur,cnt,init) \ 441#define array_needsize(type,base,cur,cnt,init) \
229 if (expect_false ((cnt) > cur)) \ 442 if (expect_false ((cnt) > (cur))) \
230 { \ 443 { \
231 int newcnt = cur; \ 444 int ocur_ = (cur); \
232 do \ 445 (base) = (type *)array_realloc \
233 { \ 446 (sizeof (type), (base), &(cur), (cnt)); \
234 newcnt = array_roundsize (base, newcnt << 1); \ 447 init ((base) + (ocur_), (cur) - ocur_); \
235 } \
236 while ((cnt) > newcnt); \
237 \
238 base = realloc (base, sizeof (*base) * (newcnt)); \
239 init (base + cur, newcnt - cur); \
240 cur = newcnt; \
241 } 448 }
242 449
450#if 0
243#define array_slim(stem) \ 451#define array_slim(type,stem) \
244 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 452 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
245 { \ 453 { \
246 stem ## max = array_roundsize (stem ## cnt >> 1); \ 454 stem ## max = array_roundsize (stem ## cnt >> 1); \
247 base = realloc (base, sizeof (*base) * (stem ## max)); \ 455 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
248 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 456 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
249 } 457 }
458#endif
250 459
251#define array_free(stem, idx) \ 460#define array_free(stem, idx) \
252 free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 461 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
253 462
254/*****************************************************************************/ 463/*****************************************************************************/
255 464
256static void 465void noinline
466ev_feed_event (EV_P_ void *w, int revents)
467{
468 W w_ = (W)w;
469 int pri = ABSPRI (w_);
470
471 if (expect_false (w_->pending))
472 pendings [pri][w_->pending - 1].events |= revents;
473 else
474 {
475 w_->pending = ++pendingcnt [pri];
476 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
477 pendings [pri][w_->pending - 1].w = w_;
478 pendings [pri][w_->pending - 1].events = revents;
479 }
480}
481
482void inline_size
483queue_events (EV_P_ W *events, int eventcnt, int type)
484{
485 int i;
486
487 for (i = 0; i < eventcnt; ++i)
488 ev_feed_event (EV_A_ events [i], type);
489}
490
491/*****************************************************************************/
492
493void inline_size
257anfds_init (ANFD *base, int count) 494anfds_init (ANFD *base, int count)
258{ 495{
259 while (count--) 496 while (count--)
260 { 497 {
261 base->head = 0; 498 base->head = 0;
… …
264 501
265 ++base; 502 ++base;
266 } 503 }
267} 504}
268 505
269static void 506void inline_speed
270event (EV_P_ W w, int events)
271{
272 if (w->pending)
273 {
274 pendings [ABSPRI (w)][w->pending - 1].events |= events;
275 return;
276 }
277
278 w->pending = ++pendingcnt [ABSPRI (w)];
279 array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], );
280 pendings [ABSPRI (w)][w->pending - 1].w = w;
281 pendings [ABSPRI (w)][w->pending - 1].events = events;
282}
283
284static void
285queue_events (EV_P_ W *events, int eventcnt, int type)
286{
287 int i;
288
289 for (i = 0; i < eventcnt; ++i)
290 event (EV_A_ events [i], type);
291}
292
293static void
294fd_event (EV_P_ int fd, int events) 507fd_event (EV_P_ int fd, int revents)
295{ 508{
296 ANFD *anfd = anfds + fd; 509 ANFD *anfd = anfds + fd;
297 struct ev_io *w; 510 ev_io *w;
298 511
299 for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) 512 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
300 { 513 {
301 int ev = w->events & events; 514 int ev = w->events & revents;
302 515
303 if (ev) 516 if (ev)
304 event (EV_A_ (W)w, ev); 517 ev_feed_event (EV_A_ (W)w, ev);
305 } 518 }
306} 519}
307 520
308/*****************************************************************************/ 521void
522ev_feed_fd_event (EV_P_ int fd, int revents)
523{
524 if (fd >= 0 && fd < anfdmax)
525 fd_event (EV_A_ fd, revents);
526}
309 527
310static void 528void inline_size
311fd_reify (EV_P) 529fd_reify (EV_P)
312{ 530{
313 int i; 531 int i;
314 532
315 for (i = 0; i < fdchangecnt; ++i) 533 for (i = 0; i < fdchangecnt; ++i)
316 { 534 {
317 int fd = fdchanges [i]; 535 int fd = fdchanges [i];
318 ANFD *anfd = anfds + fd; 536 ANFD *anfd = anfds + fd;
319 struct ev_io *w; 537 ev_io *w;
320 538
321 int events = 0; 539 int events = 0;
322 540
323 for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) 541 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
324 events |= w->events; 542 events |= w->events;
325 543
544#if EV_SELECT_IS_WINSOCKET
545 if (events)
546 {
547 unsigned long argp;
548 anfd->handle = _get_osfhandle (fd);
549 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
550 }
551#endif
552
326 anfd->reify = 0; 553 anfd->reify = 0;
327 554
328 method_modify (EV_A_ fd, anfd->events, events); 555 backend_modify (EV_A_ fd, anfd->events, events);
329 anfd->events = events; 556 anfd->events = events;
330 } 557 }
331 558
332 fdchangecnt = 0; 559 fdchangecnt = 0;
333} 560}
334 561
335static void 562void inline_size
336fd_change (EV_P_ int fd) 563fd_change (EV_P_ int fd)
337{ 564{
338 if (anfds [fd].reify || fdchangecnt < 0) 565 if (expect_false (anfds [fd].reify))
339 return; 566 return;
340 567
341 anfds [fd].reify = 1; 568 anfds [fd].reify = 1;
342 569
343 ++fdchangecnt; 570 ++fdchangecnt;
344 array_needsize (fdchanges, fdchangemax, fdchangecnt, ); 571 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
345 fdchanges [fdchangecnt - 1] = fd; 572 fdchanges [fdchangecnt - 1] = fd;
346} 573}
347 574
348static void 575void inline_speed
349fd_kill (EV_P_ int fd) 576fd_kill (EV_P_ int fd)
350{ 577{
351 struct ev_io *w; 578 ev_io *w;
352 579
353 while ((w = (struct ev_io *)anfds [fd].head)) 580 while ((w = (ev_io *)anfds [fd].head))
354 { 581 {
355 ev_io_stop (EV_A_ w); 582 ev_io_stop (EV_A_ w);
356 event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 583 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
357 } 584 }
585}
586
587int inline_size
588fd_valid (int fd)
589{
590#ifdef _WIN32
591 return _get_osfhandle (fd) != -1;
592#else
593 return fcntl (fd, F_GETFD) != -1;
594#endif
358} 595}
359 596
360/* called on EBADF to verify fds */ 597/* called on EBADF to verify fds */
361static void 598static void noinline
362fd_ebadf (EV_P) 599fd_ebadf (EV_P)
363{ 600{
364 int fd; 601 int fd;
365 602
366 for (fd = 0; fd < anfdmax; ++fd) 603 for (fd = 0; fd < anfdmax; ++fd)
367 if (anfds [fd].events) 604 if (anfds [fd].events)
368 if (fcntl (fd, F_GETFD) == -1 && errno == EBADF) 605 if (!fd_valid (fd) == -1 && errno == EBADF)
369 fd_kill (EV_A_ fd); 606 fd_kill (EV_A_ fd);
370} 607}
371 608
372/* called on ENOMEM in select/poll to kill some fds and retry */ 609/* called on ENOMEM in select/poll to kill some fds and retry */
373static void 610static void noinline
374fd_enomem (EV_P) 611fd_enomem (EV_P)
375{ 612{
376 int fd; 613 int fd;
377 614
378 for (fd = anfdmax; fd--; ) 615 for (fd = anfdmax; fd--; )
379 if (anfds [fd].events) 616 if (anfds [fd].events)
380 { 617 {
381 close (fd);
382 fd_kill (EV_A_ fd); 618 fd_kill (EV_A_ fd);
383 return; 619 return;
384 } 620 }
385} 621}
386 622
387/* susually called after fork if method needs to re-arm all fds from scratch */ 623/* usually called after fork if backend needs to re-arm all fds from scratch */
388static void 624static void noinline
389fd_rearm_all (EV_P) 625fd_rearm_all (EV_P)
390{ 626{
391 int fd; 627 int fd;
392 628
393 /* this should be highly optimised to not do anything but set a flag */
394 for (fd = 0; fd < anfdmax; ++fd) 629 for (fd = 0; fd < anfdmax; ++fd)
395 if (anfds [fd].events) 630 if (anfds [fd].events)
396 { 631 {
397 anfds [fd].events = 0; 632 anfds [fd].events = 0;
398 fd_change (EV_A_ fd); 633 fd_change (EV_A_ fd);
399 } 634 }
400} 635}
401 636
402/*****************************************************************************/ 637/*****************************************************************************/
403 638
404static void 639void inline_speed
405upheap (WT *heap, int k) 640upheap (WT *heap, int k)
406{ 641{
407 WT w = heap [k]; 642 WT w = heap [k];
408 643
409 while (k && heap [k >> 1]->at > w->at) 644 while (k && heap [k >> 1]->at > w->at)
… …
416 heap [k] = w; 651 heap [k] = w;
417 ((W)heap [k])->active = k + 1; 652 ((W)heap [k])->active = k + 1;
418 653
419} 654}
420 655
421static void 656void inline_speed
422downheap (WT *heap, int N, int k) 657downheap (WT *heap, int N, int k)
423{ 658{
424 WT w = heap [k]; 659 WT w = heap [k];
425 660
426 while (k < (N >> 1)) 661 while (k < (N >> 1))
… …
440 675
441 heap [k] = w; 676 heap [k] = w;
442 ((W)heap [k])->active = k + 1; 677 ((W)heap [k])->active = k + 1;
443} 678}
444 679
680void inline_size
681adjustheap (WT *heap, int N, int k)
682{
683 upheap (heap, k);
684 downheap (heap, N, k);
685}
686
445/*****************************************************************************/ 687/*****************************************************************************/
446 688
447typedef struct 689typedef struct
448{ 690{
449 struct ev_watcher_list *head; 691 WL head;
450 sig_atomic_t volatile gotsig; 692 sig_atomic_t volatile gotsig;
451} ANSIG; 693} ANSIG;
452 694
453static ANSIG *signals; 695static ANSIG *signals;
454static int signalmax; 696static int signalmax;
455 697
456static int sigpipe [2]; 698static int sigpipe [2];
457static sig_atomic_t volatile gotsig; 699static sig_atomic_t volatile gotsig;
458static struct ev_io sigev; 700static ev_io sigev;
459 701
460static void 702void inline_size
461signals_init (ANSIG *base, int count) 703signals_init (ANSIG *base, int count)
462{ 704{
463 while (count--) 705 while (count--)
464 { 706 {
465 base->head = 0; 707 base->head = 0;
… …
470} 712}
471 713
472static void 714static void
473sighandler (int signum) 715sighandler (int signum)
474{ 716{
475#if WIN32 717#if _WIN32
476 signal (signum, sighandler); 718 signal (signum, sighandler);
477#endif 719#endif
478 720
479 signals [signum - 1].gotsig = 1; 721 signals [signum - 1].gotsig = 1;
480 722
… …
485 write (sigpipe [1], &signum, 1); 727 write (sigpipe [1], &signum, 1);
486 errno = old_errno; 728 errno = old_errno;
487 } 729 }
488} 730}
489 731
732void noinline
733ev_feed_signal_event (EV_P_ int signum)
734{
735 WL w;
736
737#if EV_MULTIPLICITY
738 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
739#endif
740
741 --signum;
742
743 if (signum < 0 || signum >= signalmax)
744 return;
745
746 signals [signum].gotsig = 0;
747
748 for (w = signals [signum].head; w; w = w->next)
749 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
750}
751
490static void 752static void
491sigcb (EV_P_ struct ev_io *iow, int revents) 753sigcb (EV_P_ ev_io *iow, int revents)
492{ 754{
493 struct ev_watcher_list *w;
494 int signum; 755 int signum;
495 756
496 read (sigpipe [0], &revents, 1); 757 read (sigpipe [0], &revents, 1);
497 gotsig = 0; 758 gotsig = 0;
498 759
499 for (signum = signalmax; signum--; ) 760 for (signum = signalmax; signum--; )
500 if (signals [signum].gotsig) 761 if (signals [signum].gotsig)
501 { 762 ev_feed_signal_event (EV_A_ signum + 1);
502 signals [signum].gotsig = 0;
503
504 for (w = signals [signum].head; w; w = w->next)
505 event (EV_A_ (W)w, EV_SIGNAL);
506 }
507} 763}
508 764
509static void 765void inline_speed
766fd_intern (int fd)
767{
768#ifdef _WIN32
769 int arg = 1;
770 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
771#else
772 fcntl (fd, F_SETFD, FD_CLOEXEC);
773 fcntl (fd, F_SETFL, O_NONBLOCK);
774#endif
775}
776
777static void noinline
510siginit (EV_P) 778siginit (EV_P)
511{ 779{
512#ifndef WIN32 780 fd_intern (sigpipe [0]);
513 fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC); 781 fd_intern (sigpipe [1]);
514 fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
515
516 /* rather than sort out wether we really need nb, set it */
517 fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
518 fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
519#endif
520 782
521 ev_io_set (&sigev, sigpipe [0], EV_READ); 783 ev_io_set (&sigev, sigpipe [0], EV_READ);
522 ev_io_start (EV_A_ &sigev); 784 ev_io_start (EV_A_ &sigev);
523 ev_unref (EV_A); /* child watcher should not keep loop alive */ 785 ev_unref (EV_A); /* child watcher should not keep loop alive */
524} 786}
525 787
526/*****************************************************************************/ 788/*****************************************************************************/
527 789
790static ev_child *childs [EV_PID_HASHSIZE];
791
528#ifndef WIN32 792#ifndef _WIN32
529 793
530static struct ev_child *childs [PID_HASHSIZE];
531static struct ev_signal childev; 794static ev_signal childev;
795
796void inline_speed
797child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
798{
799 ev_child *w;
800
801 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
802 if (w->pid == pid || !w->pid)
803 {
804 ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */
805 w->rpid = pid;
806 w->rstatus = status;
807 ev_feed_event (EV_A_ (W)w, EV_CHILD);
808 }
809}
532 810
533#ifndef WCONTINUED 811#ifndef WCONTINUED
534# define WCONTINUED 0 812# define WCONTINUED 0
535#endif 813#endif
536 814
537static void 815static void
538child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
539{
540 struct ev_child *w;
541
542 for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
543 if (w->pid == pid || !w->pid)
544 {
545 ev_priority (w) = ev_priority (sw); /* need to do it *now* */
546 w->rpid = pid;
547 w->rstatus = status;
548 event (EV_A_ (W)w, EV_CHILD);
549 }
550}
551
552static void
553childcb (EV_P_ struct ev_signal *sw, int revents) 816childcb (EV_P_ ev_signal *sw, int revents)
554{ 817{
555 int pid, status; 818 int pid, status;
556 819
820 /* some systems define WCONTINUED but then fail to support it (linux 2.4) */
557 if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) 821 if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
558 { 822 if (!WCONTINUED
823 || errno != EINVAL
824 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
825 return;
826
559 /* make sure we are called again until all childs have been reaped */ 827 /* make sure we are called again until all childs have been reaped */
828 /* we need to do it this way so that the callback gets called before we continue */
560 event (EV_A_ (W)sw, EV_SIGNAL); 829 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
561 830
562 child_reap (EV_A_ sw, pid, pid, status); 831 child_reap (EV_A_ sw, pid, pid, status);
832 if (EV_PID_HASHSIZE > 1)
563 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */ 833 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
564 }
565} 834}
566 835
567#endif 836#endif
568 837
569/*****************************************************************************/ 838/*****************************************************************************/
570 839
840#if EV_USE_PORT
841# include "ev_port.c"
842#endif
571#if EV_USE_KQUEUE 843#if EV_USE_KQUEUE
572# include "ev_kqueue.c" 844# include "ev_kqueue.c"
573#endif 845#endif
574#if EV_USE_EPOLL 846#if EV_USE_EPOLL
575# include "ev_epoll.c" 847# include "ev_epoll.c"
… …
592{ 864{
593 return EV_VERSION_MINOR; 865 return EV_VERSION_MINOR;
594} 866}
595 867
596/* return true if we are running with elevated privileges and should ignore env variables */ 868/* return true if we are running with elevated privileges and should ignore env variables */
597static int 869int inline_size
598enable_secure (void) 870enable_secure (void)
599{ 871{
600#ifdef WIN32 872#ifdef _WIN32
601 return 0; 873 return 0;
602#else 874#else
603 return getuid () != geteuid () 875 return getuid () != geteuid ()
604 || getgid () != getegid (); 876 || getgid () != getegid ();
605#endif 877#endif
606} 878}
607 879
608int 880unsigned int
609ev_method (EV_P) 881ev_supported_backends (void)
610{ 882{
611 return method; 883 unsigned int flags = 0;
612}
613 884
614static void 885 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
615loop_init (EV_P_ int methods) 886 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
887 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
888 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
889 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
890
891 return flags;
892}
893
894unsigned int
895ev_recommended_backends (void)
616{ 896{
617 if (!method) 897 unsigned int flags = ev_supported_backends ();
898
899#ifndef __NetBSD__
900 /* kqueue is borked on everything but netbsd apparently */
901 /* it usually doesn't work correctly on anything but sockets and pipes */
902 flags &= ~EVBACKEND_KQUEUE;
903#endif
904#ifdef __APPLE__
905 // flags &= ~EVBACKEND_KQUEUE; for documentation
906 flags &= ~EVBACKEND_POLL;
907#endif
908
909 return flags;
910}
911
912unsigned int
913ev_embeddable_backends (void)
914{
915 return EVBACKEND_EPOLL
916 | EVBACKEND_KQUEUE
917 | EVBACKEND_PORT;
918}
919
920unsigned int
921ev_backend (EV_P)
922{
923 return backend;
924}
925
926unsigned int
927ev_loop_count (EV_P)
928{
929 return loop_count;
930}
931
932static void noinline
933loop_init (EV_P_ unsigned int flags)
934{
935 if (!backend)
618 { 936 {
619#if EV_USE_MONOTONIC 937#if EV_USE_MONOTONIC
620 { 938 {
621 struct timespec ts; 939 struct timespec ts;
622 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 940 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
623 have_monotonic = 1; 941 have_monotonic = 1;
624 } 942 }
625#endif 943#endif
626 944
627 rt_now = ev_time (); 945 ev_rt_now = ev_time ();
628 mn_now = get_clock (); 946 mn_now = get_clock ();
629 now_floor = mn_now; 947 now_floor = mn_now;
630 rtmn_diff = rt_now - mn_now; 948 rtmn_diff = ev_rt_now - mn_now;
631 949
632 if (methods == EVMETHOD_AUTO) 950 /* pid check not overridable via env */
633 if (!enable_secure () && getenv ("LIBEV_METHODS")) 951#ifndef _WIN32
952 if (flags & EVFLAG_FORKCHECK)
953 curpid = getpid ();
954#endif
955
956 if (!(flags & EVFLAG_NOENV)
957 && !enable_secure ()
958 && getenv ("LIBEV_FLAGS"))
634 methods = atoi (getenv ("LIBEV_METHODS")); 959 flags = atoi (getenv ("LIBEV_FLAGS"));
635 else
636 methods = EVMETHOD_ANY;
637 960
638 method = 0; 961 if (!(flags & 0x0000ffffUL))
962 flags |= ev_recommended_backends ();
963
964 backend = 0;
965 backend_fd = -1;
639#if EV_USE_WIN32 966#if EV_USE_INOTIFY
640 if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods); 967 fs_fd = -2;
968#endif
969
970#if EV_USE_PORT
971 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
641#endif 972#endif
642#if EV_USE_KQUEUE 973#if EV_USE_KQUEUE
643 if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods); 974 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
644#endif 975#endif
645#if EV_USE_EPOLL 976#if EV_USE_EPOLL
646 if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods); 977 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
647#endif 978#endif
648#if EV_USE_POLL 979#if EV_USE_POLL
649 if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods); 980 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
650#endif 981#endif
651#if EV_USE_SELECT 982#if EV_USE_SELECT
652 if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods); 983 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
653#endif 984#endif
654 }
655}
656 985
657void 986 ev_init (&sigev, sigcb);
987 ev_set_priority (&sigev, EV_MAXPRI);
988 }
989}
990
991static void noinline
658loop_destroy (EV_P) 992loop_destroy (EV_P)
659{ 993{
660 int i; 994 int i;
661 995
662#if EV_USE_WIN32 996#if EV_USE_INOTIFY
663 if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A); 997 if (fs_fd >= 0)
998 close (fs_fd);
999#endif
1000
1001 if (backend_fd >= 0)
1002 close (backend_fd);
1003
1004#if EV_USE_PORT
1005 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
664#endif 1006#endif
665#if EV_USE_KQUEUE 1007#if EV_USE_KQUEUE
666 if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A); 1008 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
667#endif 1009#endif
668#if EV_USE_EPOLL 1010#if EV_USE_EPOLL
669 if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A); 1011 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
670#endif 1012#endif
671#if EV_USE_POLL 1013#if EV_USE_POLL
672 if (method == EVMETHOD_POLL ) poll_destroy (EV_A); 1014 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
673#endif 1015#endif
674#if EV_USE_SELECT 1016#if EV_USE_SELECT
675 if (method == EVMETHOD_SELECT) select_destroy (EV_A); 1017 if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
676#endif 1018#endif
677 1019
678 for (i = NUMPRI; i--; ) 1020 for (i = NUMPRI; i--; )
1021 {
679 array_free (pending, [i]); 1022 array_free (pending, [i]);
1023#if EV_IDLE_ENABLE
1024 array_free (idle, [i]);
1025#endif
1026 }
680 1027
1028 /* have to use the microsoft-never-gets-it-right macro */
681 array_free (fdchange, ); 1029 array_free (fdchange, EMPTY);
682 array_free (timer, ); 1030 array_free (timer, EMPTY);
1031#if EV_PERIODIC_ENABLE
683 array_free (periodic, ); 1032 array_free (periodic, EMPTY);
684 array_free (idle, ); 1033#endif
685 array_free (prepare, ); 1034 array_free (prepare, EMPTY);
686 array_free (check, ); 1035 array_free (check, EMPTY);
687 1036
688 method = 0; 1037 backend = 0;
689 /*TODO*/
690} 1038}
691 1039
692void 1040void inline_size infy_fork (EV_P);
1041
1042void inline_size
693loop_fork (EV_P) 1043loop_fork (EV_P)
694{ 1044{
695 /*TODO*/ 1045#if EV_USE_PORT
1046 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1047#endif
1048#if EV_USE_KQUEUE
1049 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
1050#endif
696#if EV_USE_EPOLL 1051#if EV_USE_EPOLL
697 if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A); 1052 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
698#endif 1053#endif
699#if EV_USE_KQUEUE 1054#if EV_USE_INOTIFY
700 if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A); 1055 infy_fork (EV_A);
701#endif 1056#endif
1057
1058 if (ev_is_active (&sigev))
1059 {
1060 /* default loop */
1061
1062 ev_ref (EV_A);
1063 ev_io_stop (EV_A_ &sigev);
1064 close (sigpipe [0]);
1065 close (sigpipe [1]);
1066
1067 while (pipe (sigpipe))
1068 syserr ("(libev) error creating pipe");
1069
1070 siginit (EV_A);
1071 }
1072
1073 postfork = 0;
702} 1074}
703 1075
704#if EV_MULTIPLICITY 1076#if EV_MULTIPLICITY
705struct ev_loop * 1077struct ev_loop *
706ev_loop_new (int methods) 1078ev_loop_new (unsigned int flags)
707{ 1079{
708 struct ev_loop *loop = (struct ev_loop *)calloc (1, sizeof (struct ev_loop)); 1080 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
709 1081
1082 memset (loop, 0, sizeof (struct ev_loop));
1083
710 loop_init (EV_A_ methods); 1084 loop_init (EV_A_ flags);
711 1085
712 if (ev_method (EV_A)) 1086 if (ev_backend (EV_A))
713 return loop; 1087 return loop;
714 1088
715 return 0; 1089 return 0;
716} 1090}
717 1091
718void 1092void
719ev_loop_destroy (EV_P) 1093ev_loop_destroy (EV_P)
720{ 1094{
721 loop_destroy (EV_A); 1095 loop_destroy (EV_A);
722 free (loop); 1096 ev_free (loop);
723} 1097}
724 1098
725void 1099void
726ev_loop_fork (EV_P) 1100ev_loop_fork (EV_P)
727{ 1101{
728 loop_fork (EV_A); 1102 postfork = 1;
729} 1103}
730 1104
731#endif 1105#endif
732 1106
733#if EV_MULTIPLICITY 1107#if EV_MULTIPLICITY
734struct ev_loop default_loop_struct;
735static struct ev_loop *default_loop;
736
737struct ev_loop * 1108struct ev_loop *
1109ev_default_loop_init (unsigned int flags)
738#else 1110#else
739static int default_loop;
740
741int 1111int
1112ev_default_loop (unsigned int flags)
742#endif 1113#endif
743ev_default_loop (int methods)
744{ 1114{
745 if (sigpipe [0] == sigpipe [1]) 1115 if (sigpipe [0] == sigpipe [1])
746 if (pipe (sigpipe)) 1116 if (pipe (sigpipe))
747 return 0; 1117 return 0;
748 1118
749 if (!default_loop) 1119 if (!ev_default_loop_ptr)
750 { 1120 {
751#if EV_MULTIPLICITY 1121#if EV_MULTIPLICITY
752 struct ev_loop *loop = default_loop = &default_loop_struct; 1122 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
753#else 1123#else
754 default_loop = 1; 1124 ev_default_loop_ptr = 1;
755#endif 1125#endif
756 1126
757 loop_init (EV_A_ methods); 1127 loop_init (EV_A_ flags);
758 1128
759 if (ev_method (EV_A)) 1129 if (ev_backend (EV_A))
760 { 1130 {
761 ev_watcher_init (&sigev, sigcb);
762 ev_set_priority (&sigev, EV_MAXPRI);
763 siginit (EV_A); 1131 siginit (EV_A);
764 1132
765#ifndef WIN32 1133#ifndef _WIN32
766 ev_signal_init (&childev, childcb, SIGCHLD); 1134 ev_signal_init (&childev, childcb, SIGCHLD);
767 ev_set_priority (&childev, EV_MAXPRI); 1135 ev_set_priority (&childev, EV_MAXPRI);
768 ev_signal_start (EV_A_ &childev); 1136 ev_signal_start (EV_A_ &childev);
769 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1137 ev_unref (EV_A); /* child watcher should not keep loop alive */
770#endif 1138#endif
771 } 1139 }
772 else 1140 else
773 default_loop = 0; 1141 ev_default_loop_ptr = 0;
774 } 1142 }
775 1143
776 return default_loop; 1144 return ev_default_loop_ptr;
777} 1145}
778 1146
779void 1147void
780ev_default_destroy (void) 1148ev_default_destroy (void)
781{ 1149{
782#if EV_MULTIPLICITY 1150#if EV_MULTIPLICITY
783 struct ev_loop *loop = default_loop; 1151 struct ev_loop *loop = ev_default_loop_ptr;
784#endif 1152#endif
785 1153
1154#ifndef _WIN32
786 ev_ref (EV_A); /* child watcher */ 1155 ev_ref (EV_A); /* child watcher */
787 ev_signal_stop (EV_A_ &childev); 1156 ev_signal_stop (EV_A_ &childev);
1157#endif
788 1158
789 ev_ref (EV_A); /* signal watcher */ 1159 ev_ref (EV_A); /* signal watcher */
790 ev_io_stop (EV_A_ &sigev); 1160 ev_io_stop (EV_A_ &sigev);
791 1161
792 close (sigpipe [0]); sigpipe [0] = 0; 1162 close (sigpipe [0]); sigpipe [0] = 0;
… …
797 1167
798void 1168void
799ev_default_fork (void) 1169ev_default_fork (void)
800{ 1170{
801#if EV_MULTIPLICITY 1171#if EV_MULTIPLICITY
802 struct ev_loop *loop = default_loop; 1172 struct ev_loop *loop = ev_default_loop_ptr;
803#endif 1173#endif
804 1174
805 loop_fork (EV_A); 1175 if (backend)
806 1176 postfork = 1;
807 ev_io_stop (EV_A_ &sigev);
808 close (sigpipe [0]);
809 close (sigpipe [1]);
810 pipe (sigpipe);
811
812 ev_ref (EV_A); /* signal watcher */
813 siginit (EV_A);
814} 1177}
815 1178
816/*****************************************************************************/ 1179/*****************************************************************************/
817 1180
818static void 1181void
1182ev_invoke (EV_P_ void *w, int revents)
1183{
1184 EV_CB_INVOKE ((W)w, revents);
1185}
1186
1187void inline_speed
819call_pending (EV_P) 1188call_pending (EV_P)
820{ 1189{
821 int pri; 1190 int pri;
822 1191
823 for (pri = NUMPRI; pri--; ) 1192 for (pri = NUMPRI; pri--; )
824 while (pendingcnt [pri]) 1193 while (pendingcnt [pri])
825 { 1194 {
826 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 1195 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
827 1196
828 if (p->w) 1197 if (expect_true (p->w))
829 { 1198 {
1199 /*assert (("non-pending watcher on pending list", p->w->pending));*/
1200
830 p->w->pending = 0; 1201 p->w->pending = 0;
831 p->w->cb (EV_A_ p->w, p->events); 1202 EV_CB_INVOKE (p->w, p->events);
832 } 1203 }
833 } 1204 }
834} 1205}
835 1206
836static void 1207void inline_size
837timers_reify (EV_P) 1208timers_reify (EV_P)
838{ 1209{
839 while (timercnt && ((WT)timers [0])->at <= mn_now) 1210 while (timercnt && ((WT)timers [0])->at <= mn_now)
840 { 1211 {
841 struct ev_timer *w = timers [0]; 1212 ev_timer *w = timers [0];
842 1213
843 assert (("inactive timer on timer heap detected", ev_is_active (w))); 1214 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
844 1215
845 /* first reschedule or stop timer */ 1216 /* first reschedule or stop timer */
846 if (w->repeat) 1217 if (w->repeat)
847 { 1218 {
848 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 1219 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1220
849 ((WT)w)->at = mn_now + w->repeat; 1221 ((WT)w)->at += w->repeat;
1222 if (((WT)w)->at < mn_now)
1223 ((WT)w)->at = mn_now;
1224
850 downheap ((WT *)timers, timercnt, 0); 1225 downheap ((WT *)timers, timercnt, 0);
851 } 1226 }
852 else 1227 else
853 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ 1228 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
854 1229
855 event (EV_A_ (W)w, EV_TIMEOUT); 1230 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
856 } 1231 }
857} 1232}
858 1233
859static void 1234#if EV_PERIODIC_ENABLE
1235void inline_size
860periodics_reify (EV_P) 1236periodics_reify (EV_P)
861{ 1237{
862 while (periodiccnt && ((WT)periodics [0])->at <= rt_now) 1238 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
863 { 1239 {
864 struct ev_periodic *w = periodics [0]; 1240 ev_periodic *w = periodics [0];
865 1241
866 assert (("inactive timer on periodic heap detected", ev_is_active (w))); 1242 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
867 1243
868 /* first reschedule or stop timer */ 1244 /* first reschedule or stop timer */
869 if (w->interval) 1245 if (w->reschedule_cb)
870 { 1246 {
1247 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1248 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1249 downheap ((WT *)periodics, periodiccnt, 0);
1250 }
1251 else if (w->interval)
1252 {
871 ((WT)w)->at += floor ((rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval; 1253 ((WT)w)->at = w->offset + floor ((ev_rt_now + TIME_EPSILON - w->offset) / w->interval + 1.) * w->interval;
872 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > rt_now)); 1254 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
873 downheap ((WT *)periodics, periodiccnt, 0); 1255 downheap ((WT *)periodics, periodiccnt, 0);
874 } 1256 }
875 else 1257 else
876 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 1258 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
877 1259
878 event (EV_A_ (W)w, EV_PERIODIC); 1260 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
879 } 1261 }
880} 1262}
881 1263
882static void 1264static void noinline
883periodics_reschedule (EV_P) 1265periodics_reschedule (EV_P)
884{ 1266{
885 int i; 1267 int i;
886 1268
887 /* adjust periodics after time jump */ 1269 /* adjust periodics after time jump */
888 for (i = 0; i < periodiccnt; ++i) 1270 for (i = 0; i < periodiccnt; ++i)
889 { 1271 {
890 struct ev_periodic *w = periodics [i]; 1272 ev_periodic *w = periodics [i];
891 1273
1274 if (w->reschedule_cb)
1275 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
892 if (w->interval) 1276 else if (w->interval)
1277 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1278 }
1279
1280 /* now rebuild the heap */
1281 for (i = periodiccnt >> 1; i--; )
1282 downheap ((WT *)periodics, periodiccnt, i);
1283}
1284#endif
1285
1286#if EV_IDLE_ENABLE
1287void inline_size
1288idle_reify (EV_P)
1289{
1290 if (expect_false (idleall))
1291 {
1292 int pri;
1293
1294 for (pri = NUMPRI; pri--; )
893 { 1295 {
894 ev_tstamp diff = ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval; 1296 if (pendingcnt [pri])
1297 break;
895 1298
896 if (fabs (diff) >= 1e-4) 1299 if (idlecnt [pri])
897 { 1300 {
898 ev_periodic_stop (EV_A_ w); 1301 queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
899 ev_periodic_start (EV_A_ w); 1302 break;
900
901 i = 0; /* restart loop, inefficient, but time jumps should be rare */
902 } 1303 }
903 } 1304 }
904 } 1305 }
905} 1306}
1307#endif
906 1308
907inline int 1309int inline_size
908time_update_monotonic (EV_P) 1310time_update_monotonic (EV_P)
909{ 1311{
910 mn_now = get_clock (); 1312 mn_now = get_clock ();
911 1313
912 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 1314 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
913 { 1315 {
914 rt_now = rtmn_diff + mn_now; 1316 ev_rt_now = rtmn_diff + mn_now;
915 return 0; 1317 return 0;
916 } 1318 }
917 else 1319 else
918 { 1320 {
919 now_floor = mn_now; 1321 now_floor = mn_now;
920 rt_now = ev_time (); 1322 ev_rt_now = ev_time ();
921 return 1; 1323 return 1;
922 } 1324 }
923} 1325}
924 1326
925static void 1327void inline_size
926time_update (EV_P) 1328time_update (EV_P)
927{ 1329{
928 int i; 1330 int i;
929 1331
930#if EV_USE_MONOTONIC 1332#if EV_USE_MONOTONIC
… …
932 { 1334 {
933 if (time_update_monotonic (EV_A)) 1335 if (time_update_monotonic (EV_A))
934 { 1336 {
935 ev_tstamp odiff = rtmn_diff; 1337 ev_tstamp odiff = rtmn_diff;
936 1338
937 for (i = 4; --i; ) /* loop a few times, before making important decisions */ 1339 /* loop a few times, before making important decisions.
1340 * on the choice of "4": one iteration isn't enough,
1341 * in case we get preempted during the calls to
1342 * ev_time and get_clock. a second call is almost guaranteed
1343 * to succeed in that case, though. and looping a few more times
1344 * doesn't hurt either as we only do this on time-jumps or
1345 * in the unlikely event of having been preempted here.
1346 */
1347 for (i = 4; --i; )
938 { 1348 {
939 rtmn_diff = rt_now - mn_now; 1349 rtmn_diff = ev_rt_now - mn_now;
940 1350
941 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) 1351 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
942 return; /* all is well */ 1352 return; /* all is well */
943 1353
944 rt_now = ev_time (); 1354 ev_rt_now = ev_time ();
945 mn_now = get_clock (); 1355 mn_now = get_clock ();
946 now_floor = mn_now; 1356 now_floor = mn_now;
947 } 1357 }
948 1358
1359# if EV_PERIODIC_ENABLE
949 periodics_reschedule (EV_A); 1360 periodics_reschedule (EV_A);
1361# endif
950 /* no timer adjustment, as the monotonic clock doesn't jump */ 1362 /* no timer adjustment, as the monotonic clock doesn't jump */
951 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */ 1363 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
952 } 1364 }
953 } 1365 }
954 else 1366 else
955#endif 1367#endif
956 { 1368 {
957 rt_now = ev_time (); 1369 ev_rt_now = ev_time ();
958 1370
959 if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP)) 1371 if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
960 { 1372 {
1373#if EV_PERIODIC_ENABLE
961 periodics_reschedule (EV_A); 1374 periodics_reschedule (EV_A);
1375#endif
962 1376
963 /* adjust timers. this is easy, as the offset is the same for all */ 1377 /* adjust timers. this is easy, as the offset is the same for all of them */
964 for (i = 0; i < timercnt; ++i) 1378 for (i = 0; i < timercnt; ++i)
965 ((WT)timers [i])->at += rt_now - mn_now; 1379 ((WT)timers [i])->at += ev_rt_now - mn_now;
966 } 1380 }
967 1381
968 mn_now = rt_now; 1382 mn_now = ev_rt_now;
969 } 1383 }
970} 1384}
971 1385
972void 1386void
973ev_ref (EV_P) 1387ev_ref (EV_P)
… …
984static int loop_done; 1398static int loop_done;
985 1399
986void 1400void
987ev_loop (EV_P_ int flags) 1401ev_loop (EV_P_ int flags)
988{ 1402{
989 double block;
990 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0; 1403 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
1404 ? EVUNLOOP_ONE
1405 : EVUNLOOP_CANCEL;
1406
1407 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
991 1408
992 do 1409 do
993 { 1410 {
1411#ifndef _WIN32
1412 if (expect_false (curpid)) /* penalise the forking check even more */
1413 if (expect_false (getpid () != curpid))
1414 {
1415 curpid = getpid ();
1416 postfork = 1;
1417 }
1418#endif
1419
1420#if EV_FORK_ENABLE
1421 /* we might have forked, so queue fork handlers */
1422 if (expect_false (postfork))
1423 if (forkcnt)
1424 {
1425 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1426 call_pending (EV_A);
1427 }
1428#endif
1429
994 /* queue check watchers (and execute them) */ 1430 /* queue prepare watchers (and execute them) */
995 if (expect_false (preparecnt)) 1431 if (expect_false (preparecnt))
996 { 1432 {
997 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 1433 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
998 call_pending (EV_A); 1434 call_pending (EV_A);
999 } 1435 }
1000 1436
1437 if (expect_false (!activecnt))
1438 break;
1439
1440 /* we might have forked, so reify kernel state if necessary */
1441 if (expect_false (postfork))
1442 loop_fork (EV_A);
1443
1001 /* update fd-related kernel structures */ 1444 /* update fd-related kernel structures */
1002 fd_reify (EV_A); 1445 fd_reify (EV_A);
1003 1446
1004 /* calculate blocking time */ 1447 /* calculate blocking time */
1448 {
1449 ev_tstamp block;
1005 1450
1006 /* we only need this for !monotonic clockor timers, but as we basically 1451 if (expect_false (flags & EVLOOP_NONBLOCK || idleall || !activecnt))
1007 always have timers, we just calculate it always */ 1452 block = 0.; /* do not block at all */
1453 else
1454 {
1455 /* update time to cancel out callback processing overhead */
1008#if EV_USE_MONOTONIC 1456#if EV_USE_MONOTONIC
1009 if (expect_true (have_monotonic)) 1457 if (expect_true (have_monotonic))
1010 time_update_monotonic (EV_A); 1458 time_update_monotonic (EV_A);
1011 else 1459 else
1012#endif 1460#endif
1013 { 1461 {
1014 rt_now = ev_time (); 1462 ev_rt_now = ev_time ();
1015 mn_now = rt_now; 1463 mn_now = ev_rt_now;
1016 } 1464 }
1017 1465
1018 if (flags & EVLOOP_NONBLOCK || idlecnt)
1019 block = 0.;
1020 else
1021 {
1022 block = MAX_BLOCKTIME; 1466 block = MAX_BLOCKTIME;
1023 1467
1024 if (timercnt) 1468 if (timercnt)
1025 { 1469 {
1026 ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge; 1470 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1027 if (block > to) block = to; 1471 if (block > to) block = to;
1028 } 1472 }
1029 1473
1474#if EV_PERIODIC_ENABLE
1030 if (periodiccnt) 1475 if (periodiccnt)
1031 { 1476 {
1032 ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge; 1477 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1033 if (block > to) block = to; 1478 if (block > to) block = to;
1034 } 1479 }
1480#endif
1035 1481
1036 if (block < 0.) block = 0.; 1482 if (expect_false (block < 0.)) block = 0.;
1037 } 1483 }
1038 1484
1485 ++loop_count;
1039 method_poll (EV_A_ block); 1486 backend_poll (EV_A_ block);
1487 }
1040 1488
1041 /* update rt_now, do magic */ 1489 /* update ev_rt_now, do magic */
1042 time_update (EV_A); 1490 time_update (EV_A);
1043 1491
1044 /* queue pending timers and reschedule them */ 1492 /* queue pending timers and reschedule them */
1045 timers_reify (EV_A); /* relative timers called last */ 1493 timers_reify (EV_A); /* relative timers called last */
1494#if EV_PERIODIC_ENABLE
1046 periodics_reify (EV_A); /* absolute timers called first */ 1495 periodics_reify (EV_A); /* absolute timers called first */
1496#endif
1047 1497
1498#if EV_IDLE_ENABLE
1048 /* queue idle watchers unless io or timers are pending */ 1499 /* queue idle watchers unless other events are pending */
1049 if (!pendingcnt) 1500 idle_reify (EV_A);
1050 queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); 1501#endif
1051 1502
1052 /* queue check watchers, to be executed first */ 1503 /* queue check watchers, to be executed first */
1053 if (checkcnt) 1504 if (expect_false (checkcnt))
1054 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 1505 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1055 1506
1056 call_pending (EV_A); 1507 call_pending (EV_A);
1508
1057 } 1509 }
1058 while (activecnt && !loop_done); 1510 while (expect_true (activecnt && !loop_done));
1059 1511
1060 if (loop_done != 2) 1512 if (loop_done == EVUNLOOP_ONE)
1061 loop_done = 0; 1513 loop_done = EVUNLOOP_CANCEL;
1062} 1514}
1063 1515
1064void 1516void
1065ev_unloop (EV_P_ int how) 1517ev_unloop (EV_P_ int how)
1066{ 1518{
1067 loop_done = how; 1519 loop_done = how;
1068} 1520}
1069 1521
1070/*****************************************************************************/ 1522/*****************************************************************************/
1071 1523
1072inline void 1524void inline_size
1073wlist_add (WL *head, WL elem) 1525wlist_add (WL *head, WL elem)
1074{ 1526{
1075 elem->next = *head; 1527 elem->next = *head;
1076 *head = elem; 1528 *head = elem;
1077} 1529}
1078 1530
1079inline void 1531void inline_size
1080wlist_del (WL *head, WL elem) 1532wlist_del (WL *head, WL elem)
1081{ 1533{
1082 while (*head) 1534 while (*head)
1083 { 1535 {
1084 if (*head == elem) 1536 if (*head == elem)
… …
1089 1541
1090 head = &(*head)->next; 1542 head = &(*head)->next;
1091 } 1543 }
1092} 1544}
1093 1545
1094inline void 1546void inline_speed
1095ev_clear_pending (EV_P_ W w) 1547clear_pending (EV_P_ W w)
1096{ 1548{
1097 if (w->pending) 1549 if (w->pending)
1098 { 1550 {
1099 pendings [ABSPRI (w)][w->pending - 1].w = 0; 1551 pendings [ABSPRI (w)][w->pending - 1].w = 0;
1100 w->pending = 0; 1552 w->pending = 0;
1101 } 1553 }
1102} 1554}
1103 1555
1104inline void 1556int
1557ev_clear_pending (EV_P_ void *w)
1558{
1559 W w_ = (W)w;
1560 int pending = w_->pending;
1561
1562 if (expect_true (pending))
1563 {
1564 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
1565 w_->pending = 0;
1566 p->w = 0;
1567 return p->events;
1568 }
1569 else
1570 return 0;
1571}
1572
1573void inline_size
1574pri_adjust (EV_P_ W w)
1575{
1576 int pri = w->priority;
1577 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1578 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1579 w->priority = pri;
1580}
1581
1582void inline_speed
1105ev_start (EV_P_ W w, int active) 1583ev_start (EV_P_ W w, int active)
1106{ 1584{
1107 if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; 1585 pri_adjust (EV_A_ w);
1108 if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1109
1110 w->active = active; 1586 w->active = active;
1111 ev_ref (EV_A); 1587 ev_ref (EV_A);
1112} 1588}
1113 1589
1114inline void 1590void inline_size
1115ev_stop (EV_P_ W w) 1591ev_stop (EV_P_ W w)
1116{ 1592{
1117 ev_unref (EV_A); 1593 ev_unref (EV_A);
1118 w->active = 0; 1594 w->active = 0;
1119} 1595}
1120 1596
1121/*****************************************************************************/ 1597/*****************************************************************************/
1122 1598
1123void 1599void noinline
1124ev_io_start (EV_P_ struct ev_io *w) 1600ev_io_start (EV_P_ ev_io *w)
1125{ 1601{
1126 int fd = w->fd; 1602 int fd = w->fd;
1127 1603
1128 if (ev_is_active (w)) 1604 if (expect_false (ev_is_active (w)))
1129 return; 1605 return;
1130 1606
1131 assert (("ev_io_start called with negative fd", fd >= 0)); 1607 assert (("ev_io_start called with negative fd", fd >= 0));
1132 1608
1133 ev_start (EV_A_ (W)w, 1); 1609 ev_start (EV_A_ (W)w, 1);
1134 array_needsize (anfds, anfdmax, fd + 1, anfds_init); 1610 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1135 wlist_add ((WL *)&anfds[fd].head, (WL)w); 1611 wlist_add ((WL *)&anfds[fd].head, (WL)w);
1136 1612
1137 fd_change (EV_A_ fd); 1613 fd_change (EV_A_ fd);
1138} 1614}
1139 1615
1140void 1616void noinline
1141ev_io_stop (EV_P_ struct ev_io *w) 1617ev_io_stop (EV_P_ ev_io *w)
1142{ 1618{
1143 ev_clear_pending (EV_A_ (W)w); 1619 clear_pending (EV_A_ (W)w);
1144 if (!ev_is_active (w)) 1620 if (expect_false (!ev_is_active (w)))
1145 return; 1621 return;
1622
1623 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1146 1624
1147 wlist_del ((WL *)&anfds[w->fd].head, (WL)w); 1625 wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
1148 ev_stop (EV_A_ (W)w); 1626 ev_stop (EV_A_ (W)w);
1149 1627
1150 fd_change (EV_A_ w->fd); 1628 fd_change (EV_A_ w->fd);
1151} 1629}
1152 1630
1153void 1631void noinline
1154ev_timer_start (EV_P_ struct ev_timer *w) 1632ev_timer_start (EV_P_ ev_timer *w)
1155{ 1633{
1156 if (ev_is_active (w)) 1634 if (expect_false (ev_is_active (w)))
1157 return; 1635 return;
1158 1636
1159 ((WT)w)->at += mn_now; 1637 ((WT)w)->at += mn_now;
1160 1638
1161 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 1639 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1162 1640
1163 ev_start (EV_A_ (W)w, ++timercnt); 1641 ev_start (EV_A_ (W)w, ++timercnt);
1164 array_needsize (timers, timermax, timercnt, ); 1642 array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);
1165 timers [timercnt - 1] = w; 1643 timers [timercnt - 1] = w;
1166 upheap ((WT *)timers, timercnt - 1); 1644 upheap ((WT *)timers, timercnt - 1);
1167 1645
1646 /*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
1647}
1648
1649void noinline
1650ev_timer_stop (EV_P_ ev_timer *w)
1651{
1652 clear_pending (EV_A_ (W)w);
1653 if (expect_false (!ev_is_active (w)))
1654 return;
1655
1168 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 1656 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1169}
1170 1657
1171void 1658 {
1172ev_timer_stop (EV_P_ struct ev_timer *w) 1659 int active = ((W)w)->active;
1173{
1174 ev_clear_pending (EV_A_ (W)w);
1175 if (!ev_is_active (w))
1176 return;
1177 1660
1178 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 1661 if (expect_true (--active < --timercnt))
1179
1180 if (((W)w)->active < timercnt--)
1181 { 1662 {
1182 timers [((W)w)->active - 1] = timers [timercnt]; 1663 timers [active] = timers [timercnt];
1183 downheap ((WT *)timers, timercnt, ((W)w)->active - 1); 1664 adjustheap ((WT *)timers, timercnt, active);
1184 } 1665 }
1666 }
1185 1667
1186 ((WT)w)->at = w->repeat; 1668 ((WT)w)->at -= mn_now;
1187 1669
1188 ev_stop (EV_A_ (W)w); 1670 ev_stop (EV_A_ (W)w);
1189} 1671}
1190 1672
1191void 1673void noinline
1192ev_timer_again (EV_P_ struct ev_timer *w) 1674ev_timer_again (EV_P_ ev_timer *w)
1193{ 1675{
1194 if (ev_is_active (w)) 1676 if (ev_is_active (w))
1195 { 1677 {
1196 if (w->repeat) 1678 if (w->repeat)
1197 { 1679 {
1198 ((WT)w)->at = mn_now + w->repeat; 1680 ((WT)w)->at = mn_now + w->repeat;
1199 downheap ((WT *)timers, timercnt, ((W)w)->active - 1); 1681 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1200 } 1682 }
1201 else 1683 else
1202 ev_timer_stop (EV_A_ w); 1684 ev_timer_stop (EV_A_ w);
1203 } 1685 }
1204 else if (w->repeat) 1686 else if (w->repeat)
1687 {
1688 w->at = w->repeat;
1205 ev_timer_start (EV_A_ w); 1689 ev_timer_start (EV_A_ w);
1690 }
1206} 1691}
1207 1692
1208void 1693#if EV_PERIODIC_ENABLE
1694void noinline
1209ev_periodic_start (EV_P_ struct ev_periodic *w) 1695ev_periodic_start (EV_P_ ev_periodic *w)
1210{ 1696{
1211 if (ev_is_active (w)) 1697 if (expect_false (ev_is_active (w)))
1212 return; 1698 return;
1213 1699
1700 if (w->reschedule_cb)
1701 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1702 else if (w->interval)
1703 {
1214 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 1704 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1215
1216 /* this formula differs from the one in periodic_reify because we do not always round up */ 1705 /* this formula differs from the one in periodic_reify because we do not always round up */
1217 if (w->interval)
1218 ((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval; 1706 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1707 }
1708 else
1709 ((WT)w)->at = w->offset;
1219 1710
1220 ev_start (EV_A_ (W)w, ++periodiccnt); 1711 ev_start (EV_A_ (W)w, ++periodiccnt);
1221 array_needsize (periodics, periodicmax, periodiccnt, ); 1712 array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1222 periodics [periodiccnt - 1] = w; 1713 periodics [periodiccnt - 1] = w;
1223 upheap ((WT *)periodics, periodiccnt - 1); 1714 upheap ((WT *)periodics, periodiccnt - 1);
1224 1715
1716 /*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
1717}
1718
1719void noinline
1720ev_periodic_stop (EV_P_ ev_periodic *w)
1721{
1722 clear_pending (EV_A_ (W)w);
1723 if (expect_false (!ev_is_active (w)))
1724 return;
1725
1225 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1726 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1226}
1227 1727
1228void 1728 {
1229ev_periodic_stop (EV_P_ struct ev_periodic *w) 1729 int active = ((W)w)->active;
1230{
1231 ev_clear_pending (EV_A_ (W)w);
1232 if (!ev_is_active (w))
1233 return;
1234 1730
1235 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1731 if (expect_true (--active < --periodiccnt))
1236
1237 if (((W)w)->active < periodiccnt--)
1238 { 1732 {
1239 periodics [((W)w)->active - 1] = periodics [periodiccnt]; 1733 periodics [active] = periodics [periodiccnt];
1240 downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1); 1734 adjustheap ((WT *)periodics, periodiccnt, active);
1241 } 1735 }
1736 }
1242 1737
1243 ev_stop (EV_A_ (W)w); 1738 ev_stop (EV_A_ (W)w);
1244} 1739}
1245 1740
1246void 1741void noinline
1247ev_idle_start (EV_P_ struct ev_idle *w) 1742ev_periodic_again (EV_P_ ev_periodic *w)
1248{ 1743{
1249 if (ev_is_active (w)) 1744 /* TODO: use adjustheap and recalculation */
1250 return;
1251
1252 ev_start (EV_A_ (W)w, ++idlecnt);
1253 array_needsize (idles, idlemax, idlecnt, );
1254 idles [idlecnt - 1] = w;
1255}
1256
1257void
1258ev_idle_stop (EV_P_ struct ev_idle *w)
1259{
1260 ev_clear_pending (EV_A_ (W)w);
1261 if (ev_is_active (w))
1262 return;
1263
1264 idles [((W)w)->active - 1] = idles [--idlecnt];
1265 ev_stop (EV_A_ (W)w); 1745 ev_periodic_stop (EV_A_ w);
1746 ev_periodic_start (EV_A_ w);
1266} 1747}
1267 1748#endif
1268void
1269ev_prepare_start (EV_P_ struct ev_prepare *w)
1270{
1271 if (ev_is_active (w))
1272 return;
1273
1274 ev_start (EV_A_ (W)w, ++preparecnt);
1275 array_needsize (prepares, preparemax, preparecnt, );
1276 prepares [preparecnt - 1] = w;
1277}
1278
1279void
1280ev_prepare_stop (EV_P_ struct ev_prepare *w)
1281{
1282 ev_clear_pending (EV_A_ (W)w);
1283 if (ev_is_active (w))
1284 return;
1285
1286 prepares [((W)w)->active - 1] = prepares [--preparecnt];
1287 ev_stop (EV_A_ (W)w);
1288}
1289
1290void
1291ev_check_start (EV_P_ struct ev_check *w)
1292{
1293 if (ev_is_active (w))
1294 return;
1295
1296 ev_start (EV_A_ (W)w, ++checkcnt);
1297 array_needsize (checks, checkmax, checkcnt, );
1298 checks [checkcnt - 1] = w;
1299}
1300
1301void
1302ev_check_stop (EV_P_ struct ev_check *w)
1303{
1304 ev_clear_pending (EV_A_ (W)w);
1305 if (ev_is_active (w))
1306 return;
1307
1308 checks [((W)w)->active - 1] = checks [--checkcnt];
1309 ev_stop (EV_A_ (W)w);
1310}
1311 1749
1312#ifndef SA_RESTART 1750#ifndef SA_RESTART
1313# define SA_RESTART 0 1751# define SA_RESTART 0
1314#endif 1752#endif
1315 1753
1316void 1754void noinline
1317ev_signal_start (EV_P_ struct ev_signal *w) 1755ev_signal_start (EV_P_ ev_signal *w)
1318{ 1756{
1319#if EV_MULTIPLICITY 1757#if EV_MULTIPLICITY
1320 assert (("signal watchers are only supported in the default loop", loop == default_loop)); 1758 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1321#endif 1759#endif
1322 if (ev_is_active (w)) 1760 if (expect_false (ev_is_active (w)))
1323 return; 1761 return;
1324 1762
1325 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 1763 assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1326 1764
1327 ev_start (EV_A_ (W)w, 1); 1765 ev_start (EV_A_ (W)w, 1);
1328 array_needsize (signals, signalmax, w->signum, signals_init); 1766 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1329 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); 1767 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1330 1768
1331 if (!((WL)w)->next) 1769 if (!((WL)w)->next)
1332 { 1770 {
1333#if WIN32 1771#if _WIN32
1334 signal (w->signum, sighandler); 1772 signal (w->signum, sighandler);
1335#else 1773#else
1336 struct sigaction sa; 1774 struct sigaction sa;
1337 sa.sa_handler = sighandler; 1775 sa.sa_handler = sighandler;
1338 sigfillset (&sa.sa_mask); 1776 sigfillset (&sa.sa_mask);
… …
1340 sigaction (w->signum, &sa, 0); 1778 sigaction (w->signum, &sa, 0);
1341#endif 1779#endif
1342 } 1780 }
1343} 1781}
1344 1782
1345void 1783void noinline
1346ev_signal_stop (EV_P_ struct ev_signal *w) 1784ev_signal_stop (EV_P_ ev_signal *w)
1347{ 1785{
1348 ev_clear_pending (EV_A_ (W)w); 1786 clear_pending (EV_A_ (W)w);
1349 if (!ev_is_active (w)) 1787 if (expect_false (!ev_is_active (w)))
1350 return; 1788 return;
1351 1789
1352 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); 1790 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1353 ev_stop (EV_A_ (W)w); 1791 ev_stop (EV_A_ (W)w);
1354 1792
1355 if (!signals [w->signum - 1].head) 1793 if (!signals [w->signum - 1].head)
1356 signal (w->signum, SIG_DFL); 1794 signal (w->signum, SIG_DFL);
1357} 1795}
1358 1796
1359void 1797void
1360ev_child_start (EV_P_ struct ev_child *w) 1798ev_child_start (EV_P_ ev_child *w)
1361{ 1799{
1362#if EV_MULTIPLICITY 1800#if EV_MULTIPLICITY
1363 assert (("child watchers are only supported in the default loop", loop == default_loop)); 1801 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1364#endif 1802#endif
1365 if (ev_is_active (w)) 1803 if (expect_false (ev_is_active (w)))
1366 return; 1804 return;
1367 1805
1368 ev_start (EV_A_ (W)w, 1); 1806 ev_start (EV_A_ (W)w, 1);
1369 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1807 wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1370} 1808}
1371 1809
1372void 1810void
1373ev_child_stop (EV_P_ struct ev_child *w) 1811ev_child_stop (EV_P_ ev_child *w)
1374{ 1812{
1375 ev_clear_pending (EV_A_ (W)w); 1813 clear_pending (EV_A_ (W)w);
1376 if (ev_is_active (w)) 1814 if (expect_false (!ev_is_active (w)))
1377 return; 1815 return;
1378 1816
1379 wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1817 wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1380 ev_stop (EV_A_ (W)w); 1818 ev_stop (EV_A_ (W)w);
1381} 1819}
1382 1820
1821#if EV_STAT_ENABLE
1822
1823# ifdef _WIN32
1824# undef lstat
1825# define lstat(a,b) _stati64 (a,b)
1826# endif
1827
1828#define DEF_STAT_INTERVAL 5.0074891
1829#define MIN_STAT_INTERVAL 0.1074891
1830
1831static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
1832
1833#if EV_USE_INOTIFY
1834# define EV_INOTIFY_BUFSIZE 8192
1835
1836static void noinline
1837infy_add (EV_P_ ev_stat *w)
1838{
1839 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);
1840
1841 if (w->wd < 0)
1842 {
1843 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
1844
1845 /* monitor some parent directory for speedup hints */
1846 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
1847 {
1848 char path [4096];
1849 strcpy (path, w->path);
1850
1851 do
1852 {
1853 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
1854 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
1855
1856 char *pend = strrchr (path, '/');
1857
1858 if (!pend)
1859 break; /* whoops, no '/', complain to your admin */
1860
1861 *pend = 0;
1862 w->wd = inotify_add_watch (fs_fd, path, mask);
1863 }
1864 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
1865 }
1866 }
1867 else
1868 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
1869
1870 if (w->wd >= 0)
1871 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
1872}
1873
1874static void noinline
1875infy_del (EV_P_ ev_stat *w)
1876{
1877 int slot;
1878 int wd = w->wd;
1879
1880 if (wd < 0)
1881 return;
1882
1883 w->wd = -2;
1884 slot = wd & (EV_INOTIFY_HASHSIZE - 1);
1885 wlist_del (&fs_hash [slot].head, (WL)w);
1886
1887 /* remove this watcher, if others are watching it, they will rearm */
1888 inotify_rm_watch (fs_fd, wd);
1889}
1890
1891static void noinline
1892infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
1893{
1894 if (slot < 0)
1895 /* overflow, need to check for all hahs slots */
1896 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
1897 infy_wd (EV_A_ slot, wd, ev);
1898 else
1899 {
1900 WL w_;
1901
1902 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
1903 {
1904 ev_stat *w = (ev_stat *)w_;
1905 w_ = w_->next; /* lets us remove this watcher and all before it */
1906
1907 if (w->wd == wd || wd == -1)
1908 {
1909 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
1910 {
1911 w->wd = -1;
1912 infy_add (EV_A_ w); /* re-add, no matter what */
1913 }
1914
1915 stat_timer_cb (EV_A_ &w->timer, 0);
1916 }
1917 }
1918 }
1919}
1920
1921static void
1922infy_cb (EV_P_ ev_io *w, int revents)
1923{
1924 char buf [EV_INOTIFY_BUFSIZE];
1925 struct inotify_event *ev = (struct inotify_event *)buf;
1926 int ofs;
1927 int len = read (fs_fd, buf, sizeof (buf));
1928
1929 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
1930 infy_wd (EV_A_ ev->wd, ev->wd, ev);
1931}
1932
1933void inline_size
1934infy_init (EV_P)
1935{
1936 if (fs_fd != -2)
1937 return;
1938
1939 fs_fd = inotify_init ();
1940
1941 if (fs_fd >= 0)
1942 {
1943 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
1944 ev_set_priority (&fs_w, EV_MAXPRI);
1945 ev_io_start (EV_A_ &fs_w);
1946 }
1947}
1948
1949void inline_size
1950infy_fork (EV_P)
1951{
1952 int slot;
1953
1954 if (fs_fd < 0)
1955 return;
1956
1957 close (fs_fd);
1958 fs_fd = inotify_init ();
1959
1960 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
1961 {
1962 WL w_ = fs_hash [slot].head;
1963 fs_hash [slot].head = 0;
1964
1965 while (w_)
1966 {
1967 ev_stat *w = (ev_stat *)w_;
1968 w_ = w_->next; /* lets us add this watcher */
1969
1970 w->wd = -1;
1971
1972 if (fs_fd >= 0)
1973 infy_add (EV_A_ w); /* re-add, no matter what */
1974 else
1975 ev_timer_start (EV_A_ &w->timer);
1976 }
1977
1978 }
1979}
1980
1981#endif
1982
1983void
1984ev_stat_stat (EV_P_ ev_stat *w)
1985{
1986 if (lstat (w->path, &w->attr) < 0)
1987 w->attr.st_nlink = 0;
1988 else if (!w->attr.st_nlink)
1989 w->attr.st_nlink = 1;
1990}
1991
1992static void noinline
1993stat_timer_cb (EV_P_ ev_timer *w_, int revents)
1994{
1995 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
1996
1997 /* we copy this here each the time so that */
1998 /* prev has the old value when the callback gets invoked */
1999 w->prev = w->attr;
2000 ev_stat_stat (EV_A_ w);
2001
2002 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2003 if (
2004 w->prev.st_dev != w->attr.st_dev
2005 || w->prev.st_ino != w->attr.st_ino
2006 || w->prev.st_mode != w->attr.st_mode
2007 || w->prev.st_nlink != w->attr.st_nlink
2008 || w->prev.st_uid != w->attr.st_uid
2009 || w->prev.st_gid != w->attr.st_gid
2010 || w->prev.st_rdev != w->attr.st_rdev
2011 || w->prev.st_size != w->attr.st_size
2012 || w->prev.st_atime != w->attr.st_atime
2013 || w->prev.st_mtime != w->attr.st_mtime
2014 || w->prev.st_ctime != w->attr.st_ctime
2015 ) {
2016 #if EV_USE_INOTIFY
2017 infy_del (EV_A_ w);
2018 infy_add (EV_A_ w);
2019 ev_stat_stat (EV_A_ w); /* avoid race... */
2020 #endif
2021
2022 ev_feed_event (EV_A_ w, EV_STAT);
2023 }
2024}
2025
2026void
2027ev_stat_start (EV_P_ ev_stat *w)
2028{
2029 if (expect_false (ev_is_active (w)))
2030 return;
2031
2032 /* since we use memcmp, we need to clear any padding data etc. */
2033 memset (&w->prev, 0, sizeof (ev_statdata));
2034 memset (&w->attr, 0, sizeof (ev_statdata));
2035
2036 ev_stat_stat (EV_A_ w);
2037
2038 if (w->interval < MIN_STAT_INTERVAL)
2039 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2040
2041 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
2042 ev_set_priority (&w->timer, ev_priority (w));
2043
2044#if EV_USE_INOTIFY
2045 infy_init (EV_A);
2046
2047 if (fs_fd >= 0)
2048 infy_add (EV_A_ w);
2049 else
2050#endif
2051 ev_timer_start (EV_A_ &w->timer);
2052
2053 ev_start (EV_A_ (W)w, 1);
2054}
2055
2056void
2057ev_stat_stop (EV_P_ ev_stat *w)
2058{
2059 clear_pending (EV_A_ (W)w);
2060 if (expect_false (!ev_is_active (w)))
2061 return;
2062
2063#if EV_USE_INOTIFY
2064 infy_del (EV_A_ w);
2065#endif
2066 ev_timer_stop (EV_A_ &w->timer);
2067
2068 ev_stop (EV_A_ (W)w);
2069}
2070#endif
2071
2072#if EV_IDLE_ENABLE
2073void
2074ev_idle_start (EV_P_ ev_idle *w)
2075{
2076 if (expect_false (ev_is_active (w)))
2077 return;
2078
2079 pri_adjust (EV_A_ (W)w);
2080
2081 {
2082 int active = ++idlecnt [ABSPRI (w)];
2083
2084 ++idleall;
2085 ev_start (EV_A_ (W)w, active);
2086
2087 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2088 idles [ABSPRI (w)][active - 1] = w;
2089 }
2090}
2091
2092void
2093ev_idle_stop (EV_P_ ev_idle *w)
2094{
2095 clear_pending (EV_A_ (W)w);
2096 if (expect_false (!ev_is_active (w)))
2097 return;
2098
2099 {
2100 int active = ((W)w)->active;
2101
2102 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2103 ((W)idles [ABSPRI (w)][active - 1])->active = active;
2104
2105 ev_stop (EV_A_ (W)w);
2106 --idleall;
2107 }
2108}
2109#endif
2110
2111void
2112ev_prepare_start (EV_P_ ev_prepare *w)
2113{
2114 if (expect_false (ev_is_active (w)))
2115 return;
2116
2117 ev_start (EV_A_ (W)w, ++preparecnt);
2118 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2119 prepares [preparecnt - 1] = w;
2120}
2121
2122void
2123ev_prepare_stop (EV_P_ ev_prepare *w)
2124{
2125 clear_pending (EV_A_ (W)w);
2126 if (expect_false (!ev_is_active (w)))
2127 return;
2128
2129 {
2130 int active = ((W)w)->active;
2131 prepares [active - 1] = prepares [--preparecnt];
2132 ((W)prepares [active - 1])->active = active;
2133 }
2134
2135 ev_stop (EV_A_ (W)w);
2136}
2137
2138void
2139ev_check_start (EV_P_ ev_check *w)
2140{
2141 if (expect_false (ev_is_active (w)))
2142 return;
2143
2144 ev_start (EV_A_ (W)w, ++checkcnt);
2145 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2146 checks [checkcnt - 1] = w;
2147}
2148
2149void
2150ev_check_stop (EV_P_ ev_check *w)
2151{
2152 clear_pending (EV_A_ (W)w);
2153 if (expect_false (!ev_is_active (w)))
2154 return;
2155
2156 {
2157 int active = ((W)w)->active;
2158 checks [active - 1] = checks [--checkcnt];
2159 ((W)checks [active - 1])->active = active;
2160 }
2161
2162 ev_stop (EV_A_ (W)w);
2163}
2164
2165#if EV_EMBED_ENABLE
2166void noinline
2167ev_embed_sweep (EV_P_ ev_embed *w)
2168{
2169 ev_loop (w->loop, EVLOOP_NONBLOCK);
2170}
2171
2172static void
2173embed_cb (EV_P_ ev_io *io, int revents)
2174{
2175 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2176
2177 if (ev_cb (w))
2178 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2179 else
2180 ev_embed_sweep (loop, w);
2181}
2182
2183void
2184ev_embed_start (EV_P_ ev_embed *w)
2185{
2186 if (expect_false (ev_is_active (w)))
2187 return;
2188
2189 {
2190 struct ev_loop *loop = w->loop;
2191 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2192 ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
2193 }
2194
2195 ev_set_priority (&w->io, ev_priority (w));
2196 ev_io_start (EV_A_ &w->io);
2197
2198 ev_start (EV_A_ (W)w, 1);
2199}
2200
2201void
2202ev_embed_stop (EV_P_ ev_embed *w)
2203{
2204 clear_pending (EV_A_ (W)w);
2205 if (expect_false (!ev_is_active (w)))
2206 return;
2207
2208 ev_io_stop (EV_A_ &w->io);
2209
2210 ev_stop (EV_A_ (W)w);
2211}
2212#endif
2213
2214#if EV_FORK_ENABLE
2215void
2216ev_fork_start (EV_P_ ev_fork *w)
2217{
2218 if (expect_false (ev_is_active (w)))
2219 return;
2220
2221 ev_start (EV_A_ (W)w, ++forkcnt);
2222 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2223 forks [forkcnt - 1] = w;
2224}
2225
2226void
2227ev_fork_stop (EV_P_ ev_fork *w)
2228{
2229 clear_pending (EV_A_ (W)w);
2230 if (expect_false (!ev_is_active (w)))
2231 return;
2232
2233 {
2234 int active = ((W)w)->active;
2235 forks [active - 1] = forks [--forkcnt];
2236 ((W)forks [active - 1])->active = active;
2237 }
2238
2239 ev_stop (EV_A_ (W)w);
2240}
2241#endif
2242
1383/*****************************************************************************/ 2243/*****************************************************************************/
1384 2244
1385struct ev_once 2245struct ev_once
1386{ 2246{
1387 struct ev_io io; 2247 ev_io io;
1388 struct ev_timer to; 2248 ev_timer to;
1389 void (*cb)(int revents, void *arg); 2249 void (*cb)(int revents, void *arg);
1390 void *arg; 2250 void *arg;
1391}; 2251};
1392 2252
1393static void 2253static void
… …
1396 void (*cb)(int revents, void *arg) = once->cb; 2256 void (*cb)(int revents, void *arg) = once->cb;
1397 void *arg = once->arg; 2257 void *arg = once->arg;
1398 2258
1399 ev_io_stop (EV_A_ &once->io); 2259 ev_io_stop (EV_A_ &once->io);
1400 ev_timer_stop (EV_A_ &once->to); 2260 ev_timer_stop (EV_A_ &once->to);
1401 free (once); 2261 ev_free (once);
1402 2262
1403 cb (revents, arg); 2263 cb (revents, arg);
1404} 2264}
1405 2265
1406static void 2266static void
1407once_cb_io (EV_P_ struct ev_io *w, int revents) 2267once_cb_io (EV_P_ ev_io *w, int revents)
1408{ 2268{
1409 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 2269 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1410} 2270}
1411 2271
1412static void 2272static void
1413once_cb_to (EV_P_ struct ev_timer *w, int revents) 2273once_cb_to (EV_P_ ev_timer *w, int revents)
1414{ 2274{
1415 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 2275 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1416} 2276}
1417 2277
1418void 2278void
1419ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 2279ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1420{ 2280{
1421 struct ev_once *once = malloc (sizeof (struct ev_once)); 2281 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1422 2282
1423 if (!once) 2283 if (expect_false (!once))
2284 {
1424 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 2285 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1425 else 2286 return;
1426 { 2287 }
2288
1427 once->cb = cb; 2289 once->cb = cb;
1428 once->arg = arg; 2290 once->arg = arg;
1429 2291
1430 ev_watcher_init (&once->io, once_cb_io); 2292 ev_init (&once->io, once_cb_io);
1431 if (fd >= 0) 2293 if (fd >= 0)
1432 { 2294 {
1433 ev_io_set (&once->io, fd, events); 2295 ev_io_set (&once->io, fd, events);
1434 ev_io_start (EV_A_ &once->io); 2296 ev_io_start (EV_A_ &once->io);
1435 } 2297 }
1436 2298
1437 ev_watcher_init (&once->to, once_cb_to); 2299 ev_init (&once->to, once_cb_to);
1438 if (timeout >= 0.) 2300 if (timeout >= 0.)
1439 { 2301 {
1440 ev_timer_set (&once->to, timeout, 0.); 2302 ev_timer_set (&once->to, timeout, 0.);
1441 ev_timer_start (EV_A_ &once->to); 2303 ev_timer_start (EV_A_ &once->to);
1442 }
1443 } 2304 }
1444} 2305}
1445 2306
2307#ifdef __cplusplus
2308}
2309#endif
2310

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