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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 1.169 by root, Sat Dec 8 14:27:39 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))
132# define inline inline 227# define noinline __attribute__ ((noinline))
133#else 228#else
134# define expect(expr,value) (expr) 229# define expect(expr,value) (expr)
135# define inline static 230# define noinline
231# if __STDC_VERSION__ < 199901L
232# define inline
233# endif
136#endif 234#endif
137 235
138#define expect_false(expr) expect ((expr) != 0, 0) 236#define expect_false(expr) expect ((expr) != 0, 0)
139#define expect_true(expr) expect ((expr) != 0, 1) 237#define expect_true(expr) expect ((expr) != 0, 1)
238#define inline_size static inline
239
240#if EV_MINIMAL
241# define inline_speed static noinline
242#else
243# define inline_speed static inline
244#endif
140 245
141#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 246#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
142#define ABSPRI(w) ((w)->priority - EV_MINPRI) 247#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
143 248
249#define EMPTY /* required for microsofts broken pseudo-c compiler */
250#define EMPTY2(a,b) /* used to suppress some warnings */
251
144typedef struct ev_watcher *W; 252typedef ev_watcher *W;
145typedef struct ev_watcher_list *WL; 253typedef ev_watcher_list *WL;
146typedef struct ev_watcher_time *WT; 254typedef ev_watcher_time *WT;
147 255
148static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 256static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
149 257
150#if WIN32 258#ifdef _WIN32
151/* note: the comment below could not be substantiated, but what would I care */ 259# include "ev_win32.c"
152/* MSDN says this is required to handle SIGFPE */
153volatile double SIGFPE_REQ = 0.0f;
154#endif 260#endif
155 261
156/*****************************************************************************/ 262/*****************************************************************************/
157 263
264static void (*syserr_cb)(const char *msg);
265
266void
267ev_set_syserr_cb (void (*cb)(const char *msg))
268{
269 syserr_cb = cb;
270}
271
272static void noinline
273syserr (const char *msg)
274{
275 if (!msg)
276 msg = "(libev) system error";
277
278 if (syserr_cb)
279 syserr_cb (msg);
280 else
281 {
282 perror (msg);
283 abort ();
284 }
285}
286
287static void *(*alloc)(void *ptr, long size);
288
289void
290ev_set_allocator (void *(*cb)(void *ptr, long size))
291{
292 alloc = cb;
293}
294
295inline_speed void *
296ev_realloc (void *ptr, long size)
297{
298 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
299
300 if (!ptr && size)
301 {
302 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
303 abort ();
304 }
305
306 return ptr;
307}
308
309#define ev_malloc(size) ev_realloc (0, (size))
310#define ev_free(ptr) ev_realloc ((ptr), 0)
311
312/*****************************************************************************/
313
158typedef struct 314typedef struct
159{ 315{
160 struct ev_watcher_list *head; 316 WL head;
161 unsigned char events; 317 unsigned char events;
162 unsigned char reify; 318 unsigned char reify;
319#if EV_SELECT_IS_WINSOCKET
320 SOCKET handle;
321#endif
163} ANFD; 322} ANFD;
164 323
165typedef struct 324typedef struct
166{ 325{
167 W w; 326 W w;
168 int events; 327 int events;
169} ANPENDING; 328} ANPENDING;
170 329
330#if EV_USE_INOTIFY
331typedef struct
332{
333 WL head;
334} ANFS;
335#endif
336
171#if EV_MULTIPLICITY 337#if EV_MULTIPLICITY
172 338
173struct ev_loop 339 struct ev_loop
174{ 340 {
341 ev_tstamp ev_rt_now;
342 #define ev_rt_now ((loop)->ev_rt_now)
175# define VAR(name,decl) decl; 343 #define VAR(name,decl) decl;
176# include "ev_vars.h" 344 #include "ev_vars.h"
177};
178# undef VAR 345 #undef VAR
346 };
179# include "ev_wrap.h" 347 #include "ev_wrap.h"
348
349 static struct ev_loop default_loop_struct;
350 struct ev_loop *ev_default_loop_ptr;
180 351
181#else 352#else
182 353
354 ev_tstamp ev_rt_now;
183# define VAR(name,decl) static decl; 355 #define VAR(name,decl) static decl;
184# include "ev_vars.h" 356 #include "ev_vars.h"
185# undef VAR 357 #undef VAR
358
359 static int ev_default_loop_ptr;
186 360
187#endif 361#endif
188 362
189/*****************************************************************************/ 363/*****************************************************************************/
190 364
191inline ev_tstamp 365ev_tstamp
192ev_time (void) 366ev_time (void)
193{ 367{
194#if EV_USE_REALTIME 368#if EV_USE_REALTIME
195 struct timespec ts; 369 struct timespec ts;
196 clock_gettime (CLOCK_REALTIME, &ts); 370 clock_gettime (CLOCK_REALTIME, &ts);
… …
200 gettimeofday (&tv, 0); 374 gettimeofday (&tv, 0);
201 return tv.tv_sec + tv.tv_usec * 1e-6; 375 return tv.tv_sec + tv.tv_usec * 1e-6;
202#endif 376#endif
203} 377}
204 378
205inline ev_tstamp 379ev_tstamp inline_size
206get_clock (void) 380get_clock (void)
207{ 381{
208#if EV_USE_MONOTONIC 382#if EV_USE_MONOTONIC
209 if (expect_true (have_monotonic)) 383 if (expect_true (have_monotonic))
210 { 384 {
… …
215#endif 389#endif
216 390
217 return ev_time (); 391 return ev_time ();
218} 392}
219 393
394#if EV_MULTIPLICITY
220ev_tstamp 395ev_tstamp
221ev_now (EV_P) 396ev_now (EV_P)
222{ 397{
223 return rt_now; 398 return ev_rt_now;
224} 399}
400#endif
225 401
226#define array_roundsize(base,n) ((n) | 4 & ~3) 402int inline_size
403array_nextsize (int elem, int cur, int cnt)
404{
405 int ncur = cur + 1;
227 406
407 do
408 ncur <<= 1;
409 while (cnt > ncur);
410
411 /* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */
412 if (elem * ncur > 4096)
413 {
414 ncur *= elem;
415 ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095;
416 ncur = ncur - sizeof (void *) * 4;
417 ncur /= elem;
418 }
419
420 return ncur;
421}
422
423inline_speed void *
424array_realloc (int elem, void *base, int *cur, int cnt)
425{
426 *cur = array_nextsize (elem, *cur, cnt);
427 return ev_realloc (base, elem * *cur);
428}
429
228#define array_needsize(base,cur,cnt,init) \ 430#define array_needsize(type,base,cur,cnt,init) \
229 if (expect_false ((cnt) > cur)) \ 431 if (expect_false ((cnt) > (cur))) \
230 { \ 432 { \
231 int newcnt = cur; \ 433 int ocur_ = (cur); \
232 do \ 434 (base) = (type *)array_realloc \
233 { \ 435 (sizeof (type), (base), &(cur), (cnt)); \
234 newcnt = array_roundsize (base, newcnt << 1); \ 436 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 } 437 }
242 438
439#if 0
243#define array_slim(stem) \ 440#define array_slim(type,stem) \
244 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 441 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
245 { \ 442 { \
246 stem ## max = array_roundsize (stem ## cnt >> 1); \ 443 stem ## max = array_roundsize (stem ## cnt >> 1); \
247 base = realloc (base, sizeof (*base) * (stem ## max)); \ 444 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
248 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 445 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
249 } 446 }
447#endif
250 448
251#define array_free(stem, idx) \ 449#define array_free(stem, idx) \
252 free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 450 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
253 451
254/*****************************************************************************/ 452/*****************************************************************************/
255 453
256static void 454void noinline
455ev_feed_event (EV_P_ void *w, int revents)
456{
457 W w_ = (W)w;
458
459 if (expect_false (w_->pending))
460 {
461 pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
462 return;
463 }
464
465 w_->pending = ++pendingcnt [ABSPRI (w_)];
466 array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
467 pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
468 pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
469}
470
471void inline_size
472queue_events (EV_P_ W *events, int eventcnt, int type)
473{
474 int i;
475
476 for (i = 0; i < eventcnt; ++i)
477 ev_feed_event (EV_A_ events [i], type);
478}
479
480/*****************************************************************************/
481
482void inline_size
257anfds_init (ANFD *base, int count) 483anfds_init (ANFD *base, int count)
258{ 484{
259 while (count--) 485 while (count--)
260 { 486 {
261 base->head = 0; 487 base->head = 0;
… …
264 490
265 ++base; 491 ++base;
266 } 492 }
267} 493}
268 494
269static void 495void 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) 496fd_event (EV_P_ int fd, int revents)
295{ 497{
296 ANFD *anfd = anfds + fd; 498 ANFD *anfd = anfds + fd;
297 struct ev_io *w; 499 ev_io *w;
298 500
299 for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) 501 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
300 { 502 {
301 int ev = w->events & events; 503 int ev = w->events & revents;
302 504
303 if (ev) 505 if (ev)
304 event (EV_A_ (W)w, ev); 506 ev_feed_event (EV_A_ (W)w, ev);
305 } 507 }
306} 508}
307 509
308/*****************************************************************************/ 510void
511ev_feed_fd_event (EV_P_ int fd, int revents)
512{
513 if (fd >= 0 && fd < anfdmax)
514 fd_event (EV_A_ fd, revents);
515}
309 516
310static void 517void inline_size
311fd_reify (EV_P) 518fd_reify (EV_P)
312{ 519{
313 int i; 520 int i;
314 521
315 for (i = 0; i < fdchangecnt; ++i) 522 for (i = 0; i < fdchangecnt; ++i)
316 { 523 {
317 int fd = fdchanges [i]; 524 int fd = fdchanges [i];
318 ANFD *anfd = anfds + fd; 525 ANFD *anfd = anfds + fd;
319 struct ev_io *w; 526 ev_io *w;
320 527
321 int events = 0; 528 int events = 0;
322 529
323 for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) 530 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
324 events |= w->events; 531 events |= w->events;
325 532
533#if EV_SELECT_IS_WINSOCKET
534 if (events)
535 {
536 unsigned long argp;
537 anfd->handle = _get_osfhandle (fd);
538 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
539 }
540#endif
541
326 anfd->reify = 0; 542 anfd->reify = 0;
327 543
328 method_modify (EV_A_ fd, anfd->events, events); 544 backend_modify (EV_A_ fd, anfd->events, events);
329 anfd->events = events; 545 anfd->events = events;
330 } 546 }
331 547
332 fdchangecnt = 0; 548 fdchangecnt = 0;
333} 549}
334 550
335static void 551void inline_size
336fd_change (EV_P_ int fd) 552fd_change (EV_P_ int fd)
337{ 553{
338 if (anfds [fd].reify || fdchangecnt < 0) 554 if (expect_false (anfds [fd].reify))
339 return; 555 return;
340 556
341 anfds [fd].reify = 1; 557 anfds [fd].reify = 1;
342 558
343 ++fdchangecnt; 559 ++fdchangecnt;
344 array_needsize (fdchanges, fdchangemax, fdchangecnt, ); 560 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
345 fdchanges [fdchangecnt - 1] = fd; 561 fdchanges [fdchangecnt - 1] = fd;
346} 562}
347 563
348static void 564void inline_speed
349fd_kill (EV_P_ int fd) 565fd_kill (EV_P_ int fd)
350{ 566{
351 struct ev_io *w; 567 ev_io *w;
352 568
353 while ((w = (struct ev_io *)anfds [fd].head)) 569 while ((w = (ev_io *)anfds [fd].head))
354 { 570 {
355 ev_io_stop (EV_A_ w); 571 ev_io_stop (EV_A_ w);
356 event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 572 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
357 } 573 }
574}
575
576int inline_size
577fd_valid (int fd)
578{
579#ifdef _WIN32
580 return _get_osfhandle (fd) != -1;
581#else
582 return fcntl (fd, F_GETFD) != -1;
583#endif
358} 584}
359 585
360/* called on EBADF to verify fds */ 586/* called on EBADF to verify fds */
361static void 587static void noinline
362fd_ebadf (EV_P) 588fd_ebadf (EV_P)
363{ 589{
364 int fd; 590 int fd;
365 591
366 for (fd = 0; fd < anfdmax; ++fd) 592 for (fd = 0; fd < anfdmax; ++fd)
367 if (anfds [fd].events) 593 if (anfds [fd].events)
368 if (fcntl (fd, F_GETFD) == -1 && errno == EBADF) 594 if (!fd_valid (fd) == -1 && errno == EBADF)
369 fd_kill (EV_A_ fd); 595 fd_kill (EV_A_ fd);
370} 596}
371 597
372/* called on ENOMEM in select/poll to kill some fds and retry */ 598/* called on ENOMEM in select/poll to kill some fds and retry */
373static void 599static void noinline
374fd_enomem (EV_P) 600fd_enomem (EV_P)
375{ 601{
376 int fd; 602 int fd;
377 603
378 for (fd = anfdmax; fd--; ) 604 for (fd = anfdmax; fd--; )
379 if (anfds [fd].events) 605 if (anfds [fd].events)
380 { 606 {
381 close (fd);
382 fd_kill (EV_A_ fd); 607 fd_kill (EV_A_ fd);
383 return; 608 return;
384 } 609 }
385} 610}
386 611
387/* susually called after fork if method needs to re-arm all fds from scratch */ 612/* usually called after fork if backend needs to re-arm all fds from scratch */
388static void 613static void noinline
389fd_rearm_all (EV_P) 614fd_rearm_all (EV_P)
390{ 615{
391 int fd; 616 int fd;
392 617
393 /* this should be highly optimised to not do anything but set a flag */
394 for (fd = 0; fd < anfdmax; ++fd) 618 for (fd = 0; fd < anfdmax; ++fd)
395 if (anfds [fd].events) 619 if (anfds [fd].events)
396 { 620 {
397 anfds [fd].events = 0; 621 anfds [fd].events = 0;
398 fd_change (EV_A_ fd); 622 fd_change (EV_A_ fd);
399 } 623 }
400} 624}
401 625
402/*****************************************************************************/ 626/*****************************************************************************/
403 627
404static void 628void inline_speed
405upheap (WT *heap, int k) 629upheap (WT *heap, int k)
406{ 630{
407 WT w = heap [k]; 631 WT w = heap [k];
408 632
409 while (k && heap [k >> 1]->at > w->at) 633 while (k && heap [k >> 1]->at > w->at)
… …
416 heap [k] = w; 640 heap [k] = w;
417 ((W)heap [k])->active = k + 1; 641 ((W)heap [k])->active = k + 1;
418 642
419} 643}
420 644
421static void 645void inline_speed
422downheap (WT *heap, int N, int k) 646downheap (WT *heap, int N, int k)
423{ 647{
424 WT w = heap [k]; 648 WT w = heap [k];
425 649
426 while (k < (N >> 1)) 650 while (k < (N >> 1))
… …
440 664
441 heap [k] = w; 665 heap [k] = w;
442 ((W)heap [k])->active = k + 1; 666 ((W)heap [k])->active = k + 1;
443} 667}
444 668
669void inline_size
670adjustheap (WT *heap, int N, int k)
671{
672 upheap (heap, k);
673 downheap (heap, N, k);
674}
675
445/*****************************************************************************/ 676/*****************************************************************************/
446 677
447typedef struct 678typedef struct
448{ 679{
449 struct ev_watcher_list *head; 680 WL head;
450 sig_atomic_t volatile gotsig; 681 sig_atomic_t volatile gotsig;
451} ANSIG; 682} ANSIG;
452 683
453static ANSIG *signals; 684static ANSIG *signals;
454static int signalmax; 685static int signalmax;
455 686
456static int sigpipe [2]; 687static int sigpipe [2];
457static sig_atomic_t volatile gotsig; 688static sig_atomic_t volatile gotsig;
458static struct ev_io sigev; 689static ev_io sigev;
459 690
460static void 691void inline_size
461signals_init (ANSIG *base, int count) 692signals_init (ANSIG *base, int count)
462{ 693{
463 while (count--) 694 while (count--)
464 { 695 {
465 base->head = 0; 696 base->head = 0;
… …
470} 701}
471 702
472static void 703static void
473sighandler (int signum) 704sighandler (int signum)
474{ 705{
475#if WIN32 706#if _WIN32
476 signal (signum, sighandler); 707 signal (signum, sighandler);
477#endif 708#endif
478 709
479 signals [signum - 1].gotsig = 1; 710 signals [signum - 1].gotsig = 1;
480 711
… …
485 write (sigpipe [1], &signum, 1); 716 write (sigpipe [1], &signum, 1);
486 errno = old_errno; 717 errno = old_errno;
487 } 718 }
488} 719}
489 720
721void noinline
722ev_feed_signal_event (EV_P_ int signum)
723{
724 WL w;
725
726#if EV_MULTIPLICITY
727 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
728#endif
729
730 --signum;
731
732 if (signum < 0 || signum >= signalmax)
733 return;
734
735 signals [signum].gotsig = 0;
736
737 for (w = signals [signum].head; w; w = w->next)
738 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
739}
740
490static void 741static void
491sigcb (EV_P_ struct ev_io *iow, int revents) 742sigcb (EV_P_ ev_io *iow, int revents)
492{ 743{
493 struct ev_watcher_list *w;
494 int signum; 744 int signum;
495 745
496 read (sigpipe [0], &revents, 1); 746 read (sigpipe [0], &revents, 1);
497 gotsig = 0; 747 gotsig = 0;
498 748
499 for (signum = signalmax; signum--; ) 749 for (signum = signalmax; signum--; )
500 if (signals [signum].gotsig) 750 if (signals [signum].gotsig)
501 { 751 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} 752}
508 753
509static void 754void inline_size
755fd_intern (int fd)
756{
757#ifdef _WIN32
758 int arg = 1;
759 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
760#else
761 fcntl (fd, F_SETFD, FD_CLOEXEC);
762 fcntl (fd, F_SETFL, O_NONBLOCK);
763#endif
764}
765
766static void noinline
510siginit (EV_P) 767siginit (EV_P)
511{ 768{
512#ifndef WIN32 769 fd_intern (sigpipe [0]);
513 fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC); 770 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
520 771
521 ev_io_set (&sigev, sigpipe [0], EV_READ); 772 ev_io_set (&sigev, sigpipe [0], EV_READ);
522 ev_io_start (EV_A_ &sigev); 773 ev_io_start (EV_A_ &sigev);
523 ev_unref (EV_A); /* child watcher should not keep loop alive */ 774 ev_unref (EV_A); /* child watcher should not keep loop alive */
524} 775}
525 776
526/*****************************************************************************/ 777/*****************************************************************************/
527 778
779static ev_child *childs [EV_PID_HASHSIZE];
780
528#ifndef WIN32 781#ifndef _WIN32
529 782
530static struct ev_child *childs [PID_HASHSIZE];
531static struct ev_signal childev; 783static ev_signal childev;
784
785void inline_speed
786child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
787{
788 ev_child *w;
789
790 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
791 if (w->pid == pid || !w->pid)
792 {
793 ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */
794 w->rpid = pid;
795 w->rstatus = status;
796 ev_feed_event (EV_A_ (W)w, EV_CHILD);
797 }
798}
532 799
533#ifndef WCONTINUED 800#ifndef WCONTINUED
534# define WCONTINUED 0 801# define WCONTINUED 0
535#endif 802#endif
536 803
537static void 804static 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) 805childcb (EV_P_ ev_signal *sw, int revents)
554{ 806{
555 int pid, status; 807 int pid, status;
556 808
809 /* some systems define WCONTINUED but then fail to support it (linux 2.4) */
557 if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) 810 if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
558 { 811 if (!WCONTINUED
812 || errno != EINVAL
813 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
814 return;
815
559 /* make sure we are called again until all childs have been reaped */ 816 /* make sure we are called again until all childs have been reaped */
817 /* we need to do it this way so that the callback gets called before we continue */
560 event (EV_A_ (W)sw, EV_SIGNAL); 818 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
561 819
562 child_reap (EV_A_ sw, pid, pid, status); 820 child_reap (EV_A_ sw, pid, pid, status);
821 if (EV_PID_HASHSIZE > 1)
563 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */ 822 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
564 }
565} 823}
566 824
567#endif 825#endif
568 826
569/*****************************************************************************/ 827/*****************************************************************************/
570 828
829#if EV_USE_PORT
830# include "ev_port.c"
831#endif
571#if EV_USE_KQUEUE 832#if EV_USE_KQUEUE
572# include "ev_kqueue.c" 833# include "ev_kqueue.c"
573#endif 834#endif
574#if EV_USE_EPOLL 835#if EV_USE_EPOLL
575# include "ev_epoll.c" 836# include "ev_epoll.c"
… …
592{ 853{
593 return EV_VERSION_MINOR; 854 return EV_VERSION_MINOR;
594} 855}
595 856
596/* return true if we are running with elevated privileges and should ignore env variables */ 857/* return true if we are running with elevated privileges and should ignore env variables */
597static int 858int inline_size
598enable_secure (void) 859enable_secure (void)
599{ 860{
600#ifdef WIN32 861#ifdef _WIN32
601 return 0; 862 return 0;
602#else 863#else
603 return getuid () != geteuid () 864 return getuid () != geteuid ()
604 || getgid () != getegid (); 865 || getgid () != getegid ();
605#endif 866#endif
606} 867}
607 868
608int 869unsigned int
609ev_method (EV_P) 870ev_supported_backends (void)
610{ 871{
611 return method; 872 unsigned int flags = 0;
612}
613 873
614static void 874 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
615loop_init (EV_P_ int methods) 875 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
876 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
877 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
878 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
879
880 return flags;
881}
882
883unsigned int
884ev_recommended_backends (void)
616{ 885{
617 if (!method) 886 unsigned int flags = ev_supported_backends ();
887
888#ifndef __NetBSD__
889 /* kqueue is borked on everything but netbsd apparently */
890 /* it usually doesn't work correctly on anything but sockets and pipes */
891 flags &= ~EVBACKEND_KQUEUE;
892#endif
893#ifdef __APPLE__
894 // flags &= ~EVBACKEND_KQUEUE; for documentation
895 flags &= ~EVBACKEND_POLL;
896#endif
897
898 return flags;
899}
900
901unsigned int
902ev_embeddable_backends (void)
903{
904 return EVBACKEND_EPOLL
905 | EVBACKEND_KQUEUE
906 | EVBACKEND_PORT;
907}
908
909unsigned int
910ev_backend (EV_P)
911{
912 return backend;
913}
914
915unsigned int
916ev_loop_count (EV_P)
917{
918 return loop_count;
919}
920
921static void noinline
922loop_init (EV_P_ unsigned int flags)
923{
924 if (!backend)
618 { 925 {
619#if EV_USE_MONOTONIC 926#if EV_USE_MONOTONIC
620 { 927 {
621 struct timespec ts; 928 struct timespec ts;
622 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 929 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
623 have_monotonic = 1; 930 have_monotonic = 1;
624 } 931 }
625#endif 932#endif
626 933
627 rt_now = ev_time (); 934 ev_rt_now = ev_time ();
628 mn_now = get_clock (); 935 mn_now = get_clock ();
629 now_floor = mn_now; 936 now_floor = mn_now;
630 rtmn_diff = rt_now - mn_now; 937 rtmn_diff = ev_rt_now - mn_now;
631 938
632 if (methods == EVMETHOD_AUTO) 939 /* pid check not overridable via env */
633 if (!enable_secure () && getenv ("LIBEV_METHODS")) 940#ifndef _WIN32
941 if (flags & EVFLAG_FORKCHECK)
942 curpid = getpid ();
943#endif
944
945 if (!(flags & EVFLAG_NOENV)
946 && !enable_secure ()
947 && getenv ("LIBEV_FLAGS"))
634 methods = atoi (getenv ("LIBEV_METHODS")); 948 flags = atoi (getenv ("LIBEV_FLAGS"));
635 else
636 methods = EVMETHOD_ANY;
637 949
638 method = 0; 950 if (!(flags & 0x0000ffffUL))
951 flags |= ev_recommended_backends ();
952
953 backend = 0;
954 backend_fd = -1;
639#if EV_USE_WIN32 955#if EV_USE_INOTIFY
640 if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods); 956 fs_fd = -2;
957#endif
958
959#if EV_USE_PORT
960 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
641#endif 961#endif
642#if EV_USE_KQUEUE 962#if EV_USE_KQUEUE
643 if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods); 963 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
644#endif 964#endif
645#if EV_USE_EPOLL 965#if EV_USE_EPOLL
646 if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods); 966 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
647#endif 967#endif
648#if EV_USE_POLL 968#if EV_USE_POLL
649 if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods); 969 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
650#endif 970#endif
651#if EV_USE_SELECT 971#if EV_USE_SELECT
652 if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods); 972 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
653#endif 973#endif
654 }
655}
656 974
657void 975 ev_init (&sigev, sigcb);
976 ev_set_priority (&sigev, EV_MAXPRI);
977 }
978}
979
980static void noinline
658loop_destroy (EV_P) 981loop_destroy (EV_P)
659{ 982{
660 int i; 983 int i;
661 984
662#if EV_USE_WIN32 985#if EV_USE_INOTIFY
663 if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A); 986 if (fs_fd >= 0)
987 close (fs_fd);
988#endif
989
990 if (backend_fd >= 0)
991 close (backend_fd);
992
993#if EV_USE_PORT
994 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
664#endif 995#endif
665#if EV_USE_KQUEUE 996#if EV_USE_KQUEUE
666 if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A); 997 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
667#endif 998#endif
668#if EV_USE_EPOLL 999#if EV_USE_EPOLL
669 if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A); 1000 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
670#endif 1001#endif
671#if EV_USE_POLL 1002#if EV_USE_POLL
672 if (method == EVMETHOD_POLL ) poll_destroy (EV_A); 1003 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
673#endif 1004#endif
674#if EV_USE_SELECT 1005#if EV_USE_SELECT
675 if (method == EVMETHOD_SELECT) select_destroy (EV_A); 1006 if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
676#endif 1007#endif
677 1008
678 for (i = NUMPRI; i--; ) 1009 for (i = NUMPRI; i--; )
1010 {
679 array_free (pending, [i]); 1011 array_free (pending, [i]);
1012#if EV_IDLE_ENABLE
1013 array_free (idle, [i]);
1014#endif
1015 }
680 1016
1017 /* have to use the microsoft-never-gets-it-right macro */
681 array_free (fdchange, ); 1018 array_free (fdchange, EMPTY);
682 array_free (timer, ); 1019 array_free (timer, EMPTY);
1020#if EV_PERIODIC_ENABLE
683 array_free (periodic, ); 1021 array_free (periodic, EMPTY);
684 array_free (idle, ); 1022#endif
685 array_free (prepare, ); 1023 array_free (prepare, EMPTY);
686 array_free (check, ); 1024 array_free (check, EMPTY);
687 1025
688 method = 0; 1026 backend = 0;
689 /*TODO*/
690} 1027}
691 1028
692void 1029void inline_size infy_fork (EV_P);
1030
1031void inline_size
693loop_fork (EV_P) 1032loop_fork (EV_P)
694{ 1033{
695 /*TODO*/ 1034#if EV_USE_PORT
1035 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1036#endif
1037#if EV_USE_KQUEUE
1038 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
1039#endif
696#if EV_USE_EPOLL 1040#if EV_USE_EPOLL
697 if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A); 1041 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
698#endif 1042#endif
699#if EV_USE_KQUEUE 1043#if EV_USE_INOTIFY
700 if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A); 1044 infy_fork (EV_A);
701#endif 1045#endif
1046
1047 if (ev_is_active (&sigev))
1048 {
1049 /* default loop */
1050
1051 ev_ref (EV_A);
1052 ev_io_stop (EV_A_ &sigev);
1053 close (sigpipe [0]);
1054 close (sigpipe [1]);
1055
1056 while (pipe (sigpipe))
1057 syserr ("(libev) error creating pipe");
1058
1059 siginit (EV_A);
1060 }
1061
1062 postfork = 0;
702} 1063}
703 1064
704#if EV_MULTIPLICITY 1065#if EV_MULTIPLICITY
705struct ev_loop * 1066struct ev_loop *
706ev_loop_new (int methods) 1067ev_loop_new (unsigned int flags)
707{ 1068{
708 struct ev_loop *loop = (struct ev_loop *)calloc (1, sizeof (struct ev_loop)); 1069 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
709 1070
1071 memset (loop, 0, sizeof (struct ev_loop));
1072
710 loop_init (EV_A_ methods); 1073 loop_init (EV_A_ flags);
711 1074
712 if (ev_method (EV_A)) 1075 if (ev_backend (EV_A))
713 return loop; 1076 return loop;
714 1077
715 return 0; 1078 return 0;
716} 1079}
717 1080
718void 1081void
719ev_loop_destroy (EV_P) 1082ev_loop_destroy (EV_P)
720{ 1083{
721 loop_destroy (EV_A); 1084 loop_destroy (EV_A);
722 free (loop); 1085 ev_free (loop);
723} 1086}
724 1087
725void 1088void
726ev_loop_fork (EV_P) 1089ev_loop_fork (EV_P)
727{ 1090{
728 loop_fork (EV_A); 1091 postfork = 1;
729} 1092}
730 1093
731#endif 1094#endif
732 1095
733#if EV_MULTIPLICITY 1096#if EV_MULTIPLICITY
734struct ev_loop default_loop_struct;
735static struct ev_loop *default_loop;
736
737struct ev_loop * 1097struct ev_loop *
1098ev_default_loop_init (unsigned int flags)
738#else 1099#else
739static int default_loop;
740
741int 1100int
1101ev_default_loop (unsigned int flags)
742#endif 1102#endif
743ev_default_loop (int methods)
744{ 1103{
745 if (sigpipe [0] == sigpipe [1]) 1104 if (sigpipe [0] == sigpipe [1])
746 if (pipe (sigpipe)) 1105 if (pipe (sigpipe))
747 return 0; 1106 return 0;
748 1107
749 if (!default_loop) 1108 if (!ev_default_loop_ptr)
750 { 1109 {
751#if EV_MULTIPLICITY 1110#if EV_MULTIPLICITY
752 struct ev_loop *loop = default_loop = &default_loop_struct; 1111 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
753#else 1112#else
754 default_loop = 1; 1113 ev_default_loop_ptr = 1;
755#endif 1114#endif
756 1115
757 loop_init (EV_A_ methods); 1116 loop_init (EV_A_ flags);
758 1117
759 if (ev_method (EV_A)) 1118 if (ev_backend (EV_A))
760 { 1119 {
761 ev_watcher_init (&sigev, sigcb);
762 ev_set_priority (&sigev, EV_MAXPRI);
763 siginit (EV_A); 1120 siginit (EV_A);
764 1121
765#ifndef WIN32 1122#ifndef _WIN32
766 ev_signal_init (&childev, childcb, SIGCHLD); 1123 ev_signal_init (&childev, childcb, SIGCHLD);
767 ev_set_priority (&childev, EV_MAXPRI); 1124 ev_set_priority (&childev, EV_MAXPRI);
768 ev_signal_start (EV_A_ &childev); 1125 ev_signal_start (EV_A_ &childev);
769 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1126 ev_unref (EV_A); /* child watcher should not keep loop alive */
770#endif 1127#endif
771 } 1128 }
772 else 1129 else
773 default_loop = 0; 1130 ev_default_loop_ptr = 0;
774 } 1131 }
775 1132
776 return default_loop; 1133 return ev_default_loop_ptr;
777} 1134}
778 1135
779void 1136void
780ev_default_destroy (void) 1137ev_default_destroy (void)
781{ 1138{
782#if EV_MULTIPLICITY 1139#if EV_MULTIPLICITY
783 struct ev_loop *loop = default_loop; 1140 struct ev_loop *loop = ev_default_loop_ptr;
784#endif 1141#endif
785 1142
1143#ifndef _WIN32
786 ev_ref (EV_A); /* child watcher */ 1144 ev_ref (EV_A); /* child watcher */
787 ev_signal_stop (EV_A_ &childev); 1145 ev_signal_stop (EV_A_ &childev);
1146#endif
788 1147
789 ev_ref (EV_A); /* signal watcher */ 1148 ev_ref (EV_A); /* signal watcher */
790 ev_io_stop (EV_A_ &sigev); 1149 ev_io_stop (EV_A_ &sigev);
791 1150
792 close (sigpipe [0]); sigpipe [0] = 0; 1151 close (sigpipe [0]); sigpipe [0] = 0;
… …
797 1156
798void 1157void
799ev_default_fork (void) 1158ev_default_fork (void)
800{ 1159{
801#if EV_MULTIPLICITY 1160#if EV_MULTIPLICITY
802 struct ev_loop *loop = default_loop; 1161 struct ev_loop *loop = ev_default_loop_ptr;
803#endif 1162#endif
804 1163
805 loop_fork (EV_A); 1164 if (backend)
806 1165 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} 1166}
815 1167
816/*****************************************************************************/ 1168/*****************************************************************************/
817 1169
818static void 1170void
1171ev_invoke (EV_P_ void *w, int revents)
1172{
1173 EV_CB_INVOKE ((W)w, revents);
1174}
1175
1176void inline_speed
819call_pending (EV_P) 1177call_pending (EV_P)
820{ 1178{
821 int pri; 1179 int pri;
822 1180
823 for (pri = NUMPRI; pri--; ) 1181 for (pri = NUMPRI; pri--; )
824 while (pendingcnt [pri]) 1182 while (pendingcnt [pri])
825 { 1183 {
826 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 1184 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
827 1185
828 if (p->w) 1186 if (expect_true (p->w))
829 { 1187 {
1188 /*assert (("non-pending watcher on pending list", p->w->pending));*/
1189
830 p->w->pending = 0; 1190 p->w->pending = 0;
831 p->w->cb (EV_A_ p->w, p->events); 1191 EV_CB_INVOKE (p->w, p->events);
832 } 1192 }
833 } 1193 }
834} 1194}
835 1195
836static void 1196void inline_size
837timers_reify (EV_P) 1197timers_reify (EV_P)
838{ 1198{
839 while (timercnt && ((WT)timers [0])->at <= mn_now) 1199 while (timercnt && ((WT)timers [0])->at <= mn_now)
840 { 1200 {
841 struct ev_timer *w = timers [0]; 1201 ev_timer *w = timers [0];
842 1202
843 assert (("inactive timer on timer heap detected", ev_is_active (w))); 1203 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
844 1204
845 /* first reschedule or stop timer */ 1205 /* first reschedule or stop timer */
846 if (w->repeat) 1206 if (w->repeat)
847 { 1207 {
848 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 1208 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1209
849 ((WT)w)->at = mn_now + w->repeat; 1210 ((WT)w)->at += w->repeat;
1211 if (((WT)w)->at < mn_now)
1212 ((WT)w)->at = mn_now;
1213
850 downheap ((WT *)timers, timercnt, 0); 1214 downheap ((WT *)timers, timercnt, 0);
851 } 1215 }
852 else 1216 else
853 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ 1217 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
854 1218
855 event (EV_A_ (W)w, EV_TIMEOUT); 1219 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
856 } 1220 }
857} 1221}
858 1222
859static void 1223#if EV_PERIODIC_ENABLE
1224void inline_size
860periodics_reify (EV_P) 1225periodics_reify (EV_P)
861{ 1226{
862 while (periodiccnt && ((WT)periodics [0])->at <= rt_now) 1227 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
863 { 1228 {
864 struct ev_periodic *w = periodics [0]; 1229 ev_periodic *w = periodics [0];
865 1230
866 assert (("inactive timer on periodic heap detected", ev_is_active (w))); 1231 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
867 1232
868 /* first reschedule or stop timer */ 1233 /* first reschedule or stop timer */
869 if (w->interval) 1234 if (w->reschedule_cb)
870 { 1235 {
1236 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
1237 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1238 downheap ((WT *)periodics, periodiccnt, 0);
1239 }
1240 else if (w->interval)
1241 {
871 ((WT)w)->at += floor ((rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval; 1242 ((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
872 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > rt_now)); 1243 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); 1244 downheap ((WT *)periodics, periodiccnt, 0);
874 } 1245 }
875 else 1246 else
876 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 1247 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
877 1248
878 event (EV_A_ (W)w, EV_PERIODIC); 1249 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
879 } 1250 }
880} 1251}
881 1252
882static void 1253static void noinline
883periodics_reschedule (EV_P) 1254periodics_reschedule (EV_P)
884{ 1255{
885 int i; 1256 int i;
886 1257
887 /* adjust periodics after time jump */ 1258 /* adjust periodics after time jump */
888 for (i = 0; i < periodiccnt; ++i) 1259 for (i = 0; i < periodiccnt; ++i)
889 { 1260 {
890 struct ev_periodic *w = periodics [i]; 1261 ev_periodic *w = periodics [i];
891 1262
1263 if (w->reschedule_cb)
1264 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
892 if (w->interval) 1265 else if (w->interval)
1266 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
1267 }
1268
1269 /* now rebuild the heap */
1270 for (i = periodiccnt >> 1; i--; )
1271 downheap ((WT *)periodics, periodiccnt, i);
1272}
1273#endif
1274
1275#if EV_IDLE_ENABLE
1276void inline_size
1277idle_reify (EV_P)
1278{
1279 if (expect_false (idleall))
1280 {
1281 int pri;
1282
1283 for (pri = NUMPRI; pri--; )
893 { 1284 {
894 ev_tstamp diff = ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval; 1285 if (pendingcnt [pri])
1286 break;
895 1287
896 if (fabs (diff) >= 1e-4) 1288 if (idlecnt [pri])
897 { 1289 {
898 ev_periodic_stop (EV_A_ w); 1290 queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
899 ev_periodic_start (EV_A_ w); 1291 break;
900
901 i = 0; /* restart loop, inefficient, but time jumps should be rare */
902 } 1292 }
903 } 1293 }
904 } 1294 }
905} 1295}
1296#endif
906 1297
907inline int 1298int inline_size
908time_update_monotonic (EV_P) 1299time_update_monotonic (EV_P)
909{ 1300{
910 mn_now = get_clock (); 1301 mn_now = get_clock ();
911 1302
912 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 1303 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
913 { 1304 {
914 rt_now = rtmn_diff + mn_now; 1305 ev_rt_now = rtmn_diff + mn_now;
915 return 0; 1306 return 0;
916 } 1307 }
917 else 1308 else
918 { 1309 {
919 now_floor = mn_now; 1310 now_floor = mn_now;
920 rt_now = ev_time (); 1311 ev_rt_now = ev_time ();
921 return 1; 1312 return 1;
922 } 1313 }
923} 1314}
924 1315
925static void 1316void inline_size
926time_update (EV_P) 1317time_update (EV_P)
927{ 1318{
928 int i; 1319 int i;
929 1320
930#if EV_USE_MONOTONIC 1321#if EV_USE_MONOTONIC
… …
932 { 1323 {
933 if (time_update_monotonic (EV_A)) 1324 if (time_update_monotonic (EV_A))
934 { 1325 {
935 ev_tstamp odiff = rtmn_diff; 1326 ev_tstamp odiff = rtmn_diff;
936 1327
937 for (i = 4; --i; ) /* loop a few times, before making important decisions */ 1328 /* loop a few times, before making important decisions.
1329 * on the choice of "4": one iteration isn't enough,
1330 * in case we get preempted during the calls to
1331 * ev_time and get_clock. a second call is almost guaranteed
1332 * to succeed in that case, though. and looping a few more times
1333 * doesn't hurt either as we only do this on time-jumps or
1334 * in the unlikely event of having been preempted here.
1335 */
1336 for (i = 4; --i; )
938 { 1337 {
939 rtmn_diff = rt_now - mn_now; 1338 rtmn_diff = ev_rt_now - mn_now;
940 1339
941 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) 1340 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
942 return; /* all is well */ 1341 return; /* all is well */
943 1342
944 rt_now = ev_time (); 1343 ev_rt_now = ev_time ();
945 mn_now = get_clock (); 1344 mn_now = get_clock ();
946 now_floor = mn_now; 1345 now_floor = mn_now;
947 } 1346 }
948 1347
1348# if EV_PERIODIC_ENABLE
949 periodics_reschedule (EV_A); 1349 periodics_reschedule (EV_A);
1350# endif
950 /* no timer adjustment, as the monotonic clock doesn't jump */ 1351 /* no timer adjustment, as the monotonic clock doesn't jump */
951 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */ 1352 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
952 } 1353 }
953 } 1354 }
954 else 1355 else
955#endif 1356#endif
956 { 1357 {
957 rt_now = ev_time (); 1358 ev_rt_now = ev_time ();
958 1359
959 if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP)) 1360 if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
960 { 1361 {
1362#if EV_PERIODIC_ENABLE
961 periodics_reschedule (EV_A); 1363 periodics_reschedule (EV_A);
1364#endif
962 1365
963 /* adjust timers. this is easy, as the offset is the same for all */ 1366 /* adjust timers. this is easy, as the offset is the same for all of them */
964 for (i = 0; i < timercnt; ++i) 1367 for (i = 0; i < timercnt; ++i)
965 ((WT)timers [i])->at += rt_now - mn_now; 1368 ((WT)timers [i])->at += ev_rt_now - mn_now;
966 } 1369 }
967 1370
968 mn_now = rt_now; 1371 mn_now = ev_rt_now;
969 } 1372 }
970} 1373}
971 1374
972void 1375void
973ev_ref (EV_P) 1376ev_ref (EV_P)
… …
984static int loop_done; 1387static int loop_done;
985 1388
986void 1389void
987ev_loop (EV_P_ int flags) 1390ev_loop (EV_P_ int flags)
988{ 1391{
989 double block;
990 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0; 1392 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
1393 ? EVUNLOOP_ONE
1394 : EVUNLOOP_CANCEL;
1395
1396 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
991 1397
992 do 1398 do
993 { 1399 {
1400#ifndef _WIN32
1401 if (expect_false (curpid)) /* penalise the forking check even more */
1402 if (expect_false (getpid () != curpid))
1403 {
1404 curpid = getpid ();
1405 postfork = 1;
1406 }
1407#endif
1408
1409#if EV_FORK_ENABLE
1410 /* we might have forked, so queue fork handlers */
1411 if (expect_false (postfork))
1412 if (forkcnt)
1413 {
1414 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1415 call_pending (EV_A);
1416 }
1417#endif
1418
994 /* queue check watchers (and execute them) */ 1419 /* queue check watchers (and execute them) */
995 if (expect_false (preparecnt)) 1420 if (expect_false (preparecnt))
996 { 1421 {
997 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 1422 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
998 call_pending (EV_A); 1423 call_pending (EV_A);
999 } 1424 }
1000 1425
1426 if (expect_false (!activecnt))
1427 break;
1428
1429 /* we might have forked, so reify kernel state if necessary */
1430 if (expect_false (postfork))
1431 loop_fork (EV_A);
1432
1001 /* update fd-related kernel structures */ 1433 /* update fd-related kernel structures */
1002 fd_reify (EV_A); 1434 fd_reify (EV_A);
1003 1435
1004 /* calculate blocking time */ 1436 /* calculate blocking time */
1437 {
1438 ev_tstamp block;
1005 1439
1006 /* we only need this for !monotonic clockor timers, but as we basically 1440 if (expect_false (flags & EVLOOP_NONBLOCK || idleall || !activecnt))
1007 always have timers, we just calculate it always */ 1441 block = 0.; /* do not block at all */
1442 else
1443 {
1444 /* update time to cancel out callback processing overhead */
1008#if EV_USE_MONOTONIC 1445#if EV_USE_MONOTONIC
1009 if (expect_true (have_monotonic)) 1446 if (expect_true (have_monotonic))
1010 time_update_monotonic (EV_A); 1447 time_update_monotonic (EV_A);
1011 else 1448 else
1012#endif 1449#endif
1013 { 1450 {
1014 rt_now = ev_time (); 1451 ev_rt_now = ev_time ();
1015 mn_now = rt_now; 1452 mn_now = ev_rt_now;
1016 } 1453 }
1017 1454
1018 if (flags & EVLOOP_NONBLOCK || idlecnt)
1019 block = 0.;
1020 else
1021 {
1022 block = MAX_BLOCKTIME; 1455 block = MAX_BLOCKTIME;
1023 1456
1024 if (timercnt) 1457 if (timercnt)
1025 { 1458 {
1026 ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge; 1459 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1027 if (block > to) block = to; 1460 if (block > to) block = to;
1028 } 1461 }
1029 1462
1463#if EV_PERIODIC_ENABLE
1030 if (periodiccnt) 1464 if (periodiccnt)
1031 { 1465 {
1032 ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge; 1466 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1033 if (block > to) block = to; 1467 if (block > to) block = to;
1034 } 1468 }
1469#endif
1035 1470
1036 if (block < 0.) block = 0.; 1471 if (expect_false (block < 0.)) block = 0.;
1037 } 1472 }
1038 1473
1474 ++loop_count;
1039 method_poll (EV_A_ block); 1475 backend_poll (EV_A_ block);
1476 }
1040 1477
1041 /* update rt_now, do magic */ 1478 /* update ev_rt_now, do magic */
1042 time_update (EV_A); 1479 time_update (EV_A);
1043 1480
1044 /* queue pending timers and reschedule them */ 1481 /* queue pending timers and reschedule them */
1045 timers_reify (EV_A); /* relative timers called last */ 1482 timers_reify (EV_A); /* relative timers called last */
1483#if EV_PERIODIC_ENABLE
1046 periodics_reify (EV_A); /* absolute timers called first */ 1484 periodics_reify (EV_A); /* absolute timers called first */
1485#endif
1047 1486
1487#if EV_IDLE_ENABLE
1048 /* queue idle watchers unless io or timers are pending */ 1488 /* queue idle watchers unless other events are pending */
1049 if (!pendingcnt) 1489 idle_reify (EV_A);
1050 queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); 1490#endif
1051 1491
1052 /* queue check watchers, to be executed first */ 1492 /* queue check watchers, to be executed first */
1053 if (checkcnt) 1493 if (expect_false (checkcnt))
1054 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 1494 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1055 1495
1056 call_pending (EV_A); 1496 call_pending (EV_A);
1497
1057 } 1498 }
1058 while (activecnt && !loop_done); 1499 while (expect_true (activecnt && !loop_done));
1059 1500
1060 if (loop_done != 2) 1501 if (loop_done == EVUNLOOP_ONE)
1061 loop_done = 0; 1502 loop_done = EVUNLOOP_CANCEL;
1062} 1503}
1063 1504
1064void 1505void
1065ev_unloop (EV_P_ int how) 1506ev_unloop (EV_P_ int how)
1066{ 1507{
1067 loop_done = how; 1508 loop_done = how;
1068} 1509}
1069 1510
1070/*****************************************************************************/ 1511/*****************************************************************************/
1071 1512
1072inline void 1513void inline_size
1073wlist_add (WL *head, WL elem) 1514wlist_add (WL *head, WL elem)
1074{ 1515{
1075 elem->next = *head; 1516 elem->next = *head;
1076 *head = elem; 1517 *head = elem;
1077} 1518}
1078 1519
1079inline void 1520void inline_size
1080wlist_del (WL *head, WL elem) 1521wlist_del (WL *head, WL elem)
1081{ 1522{
1082 while (*head) 1523 while (*head)
1083 { 1524 {
1084 if (*head == elem) 1525 if (*head == elem)
… …
1089 1530
1090 head = &(*head)->next; 1531 head = &(*head)->next;
1091 } 1532 }
1092} 1533}
1093 1534
1094inline void 1535void inline_speed
1095ev_clear_pending (EV_P_ W w) 1536clear_pending (EV_P_ W w)
1096{ 1537{
1097 if (w->pending) 1538 if (w->pending)
1098 { 1539 {
1099 pendings [ABSPRI (w)][w->pending - 1].w = 0; 1540 pendings [ABSPRI (w)][w->pending - 1].w = 0;
1100 w->pending = 0; 1541 w->pending = 0;
1101 } 1542 }
1102} 1543}
1103 1544
1104inline void 1545int
1546ev_clear_pending (EV_P_ void *w)
1547{
1548 W w_ = (W)w;
1549 int pending = w_->pending;
1550
1551 if (!pending)
1552 return 0;
1553
1554 w_->pending = 0;
1555 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
1556 p->w = 0;
1557
1558 return p->events;
1559}
1560
1561void inline_size
1562pri_adjust (EV_P_ W w)
1563{
1564 int pri = w->priority;
1565 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1566 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1567 w->priority = pri;
1568}
1569
1570void inline_speed
1105ev_start (EV_P_ W w, int active) 1571ev_start (EV_P_ W w, int active)
1106{ 1572{
1107 if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; 1573 pri_adjust (EV_A_ w);
1108 if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1109
1110 w->active = active; 1574 w->active = active;
1111 ev_ref (EV_A); 1575 ev_ref (EV_A);
1112} 1576}
1113 1577
1114inline void 1578void inline_size
1115ev_stop (EV_P_ W w) 1579ev_stop (EV_P_ W w)
1116{ 1580{
1117 ev_unref (EV_A); 1581 ev_unref (EV_A);
1118 w->active = 0; 1582 w->active = 0;
1119} 1583}
1120 1584
1121/*****************************************************************************/ 1585/*****************************************************************************/
1122 1586
1123void 1587void
1124ev_io_start (EV_P_ struct ev_io *w) 1588ev_io_start (EV_P_ ev_io *w)
1125{ 1589{
1126 int fd = w->fd; 1590 int fd = w->fd;
1127 1591
1128 if (ev_is_active (w)) 1592 if (expect_false (ev_is_active (w)))
1129 return; 1593 return;
1130 1594
1131 assert (("ev_io_start called with negative fd", fd >= 0)); 1595 assert (("ev_io_start called with negative fd", fd >= 0));
1132 1596
1133 ev_start (EV_A_ (W)w, 1); 1597 ev_start (EV_A_ (W)w, 1);
1134 array_needsize (anfds, anfdmax, fd + 1, anfds_init); 1598 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1135 wlist_add ((WL *)&anfds[fd].head, (WL)w); 1599 wlist_add ((WL *)&anfds[fd].head, (WL)w);
1136 1600
1137 fd_change (EV_A_ fd); 1601 fd_change (EV_A_ fd);
1138} 1602}
1139 1603
1140void 1604void
1141ev_io_stop (EV_P_ struct ev_io *w) 1605ev_io_stop (EV_P_ ev_io *w)
1142{ 1606{
1143 ev_clear_pending (EV_A_ (W)w); 1607 clear_pending (EV_A_ (W)w);
1144 if (!ev_is_active (w)) 1608 if (expect_false (!ev_is_active (w)))
1145 return; 1609 return;
1610
1611 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1146 1612
1147 wlist_del ((WL *)&anfds[w->fd].head, (WL)w); 1613 wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
1148 ev_stop (EV_A_ (W)w); 1614 ev_stop (EV_A_ (W)w);
1149 1615
1150 fd_change (EV_A_ w->fd); 1616 fd_change (EV_A_ w->fd);
1151} 1617}
1152 1618
1153void 1619void
1154ev_timer_start (EV_P_ struct ev_timer *w) 1620ev_timer_start (EV_P_ ev_timer *w)
1155{ 1621{
1156 if (ev_is_active (w)) 1622 if (expect_false (ev_is_active (w)))
1157 return; 1623 return;
1158 1624
1159 ((WT)w)->at += mn_now; 1625 ((WT)w)->at += mn_now;
1160 1626
1161 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 1627 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1162 1628
1163 ev_start (EV_A_ (W)w, ++timercnt); 1629 ev_start (EV_A_ (W)w, ++timercnt);
1164 array_needsize (timers, timermax, timercnt, ); 1630 array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);
1165 timers [timercnt - 1] = w; 1631 timers [timercnt - 1] = w;
1166 upheap ((WT *)timers, timercnt - 1); 1632 upheap ((WT *)timers, timercnt - 1);
1167 1633
1634 /*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
1635}
1636
1637void
1638ev_timer_stop (EV_P_ ev_timer *w)
1639{
1640 clear_pending (EV_A_ (W)w);
1641 if (expect_false (!ev_is_active (w)))
1642 return;
1643
1168 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 1644 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1169}
1170 1645
1171void 1646 {
1172ev_timer_stop (EV_P_ struct ev_timer *w) 1647 int active = ((W)w)->active;
1173{
1174 ev_clear_pending (EV_A_ (W)w);
1175 if (!ev_is_active (w))
1176 return;
1177 1648
1178 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 1649 if (expect_true (--active < --timercnt))
1179
1180 if (((W)w)->active < timercnt--)
1181 { 1650 {
1182 timers [((W)w)->active - 1] = timers [timercnt]; 1651 timers [active] = timers [timercnt];
1183 downheap ((WT *)timers, timercnt, ((W)w)->active - 1); 1652 adjustheap ((WT *)timers, timercnt, active);
1184 } 1653 }
1654 }
1185 1655
1186 ((WT)w)->at = w->repeat; 1656 ((WT)w)->at -= mn_now;
1187 1657
1188 ev_stop (EV_A_ (W)w); 1658 ev_stop (EV_A_ (W)w);
1189} 1659}
1190 1660
1191void 1661void
1192ev_timer_again (EV_P_ struct ev_timer *w) 1662ev_timer_again (EV_P_ ev_timer *w)
1193{ 1663{
1194 if (ev_is_active (w)) 1664 if (ev_is_active (w))
1195 { 1665 {
1196 if (w->repeat) 1666 if (w->repeat)
1197 { 1667 {
1198 ((WT)w)->at = mn_now + w->repeat; 1668 ((WT)w)->at = mn_now + w->repeat;
1199 downheap ((WT *)timers, timercnt, ((W)w)->active - 1); 1669 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1200 } 1670 }
1201 else 1671 else
1202 ev_timer_stop (EV_A_ w); 1672 ev_timer_stop (EV_A_ w);
1203 } 1673 }
1204 else if (w->repeat) 1674 else if (w->repeat)
1675 {
1676 w->at = w->repeat;
1205 ev_timer_start (EV_A_ w); 1677 ev_timer_start (EV_A_ w);
1678 }
1206} 1679}
1207 1680
1681#if EV_PERIODIC_ENABLE
1208void 1682void
1209ev_periodic_start (EV_P_ struct ev_periodic *w) 1683ev_periodic_start (EV_P_ ev_periodic *w)
1210{ 1684{
1211 if (ev_is_active (w)) 1685 if (expect_false (ev_is_active (w)))
1212 return; 1686 return;
1213 1687
1688 if (w->reschedule_cb)
1689 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1690 else if (w->interval)
1691 {
1214 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 1692 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 */ 1693 /* 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; 1694 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
1695 }
1219 1696
1220 ev_start (EV_A_ (W)w, ++periodiccnt); 1697 ev_start (EV_A_ (W)w, ++periodiccnt);
1221 array_needsize (periodics, periodicmax, periodiccnt, ); 1698 array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1222 periodics [periodiccnt - 1] = w; 1699 periodics [periodiccnt - 1] = w;
1223 upheap ((WT *)periodics, periodiccnt - 1); 1700 upheap ((WT *)periodics, periodiccnt - 1);
1224 1701
1702 /*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
1703}
1704
1705void
1706ev_periodic_stop (EV_P_ ev_periodic *w)
1707{
1708 clear_pending (EV_A_ (W)w);
1709 if (expect_false (!ev_is_active (w)))
1710 return;
1711
1225 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1712 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1226}
1227 1713
1228void 1714 {
1229ev_periodic_stop (EV_P_ struct ev_periodic *w) 1715 int active = ((W)w)->active;
1230{
1231 ev_clear_pending (EV_A_ (W)w);
1232 if (!ev_is_active (w))
1233 return;
1234 1716
1235 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1717 if (expect_true (--active < --periodiccnt))
1236
1237 if (((W)w)->active < periodiccnt--)
1238 { 1718 {
1239 periodics [((W)w)->active - 1] = periodics [periodiccnt]; 1719 periodics [active] = periodics [periodiccnt];
1240 downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1); 1720 adjustheap ((WT *)periodics, periodiccnt, active);
1241 } 1721 }
1722 }
1242 1723
1243 ev_stop (EV_A_ (W)w); 1724 ev_stop (EV_A_ (W)w);
1244} 1725}
1245 1726
1246void 1727void
1247ev_idle_start (EV_P_ struct ev_idle *w) 1728ev_periodic_again (EV_P_ ev_periodic *w)
1248{ 1729{
1249 if (ev_is_active (w)) 1730 /* 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); 1731 ev_periodic_stop (EV_A_ w);
1732 ev_periodic_start (EV_A_ w);
1266} 1733}
1267 1734#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 1735
1312#ifndef SA_RESTART 1736#ifndef SA_RESTART
1313# define SA_RESTART 0 1737# define SA_RESTART 0
1314#endif 1738#endif
1315 1739
1316void 1740void
1317ev_signal_start (EV_P_ struct ev_signal *w) 1741ev_signal_start (EV_P_ ev_signal *w)
1318{ 1742{
1319#if EV_MULTIPLICITY 1743#if EV_MULTIPLICITY
1320 assert (("signal watchers are only supported in the default loop", loop == default_loop)); 1744 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1321#endif 1745#endif
1322 if (ev_is_active (w)) 1746 if (expect_false (ev_is_active (w)))
1323 return; 1747 return;
1324 1748
1325 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 1749 assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1326 1750
1327 ev_start (EV_A_ (W)w, 1); 1751 ev_start (EV_A_ (W)w, 1);
1328 array_needsize (signals, signalmax, w->signum, signals_init); 1752 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1329 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); 1753 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1330 1754
1331 if (!((WL)w)->next) 1755 if (!((WL)w)->next)
1332 { 1756 {
1333#if WIN32 1757#if _WIN32
1334 signal (w->signum, sighandler); 1758 signal (w->signum, sighandler);
1335#else 1759#else
1336 struct sigaction sa; 1760 struct sigaction sa;
1337 sa.sa_handler = sighandler; 1761 sa.sa_handler = sighandler;
1338 sigfillset (&sa.sa_mask); 1762 sigfillset (&sa.sa_mask);
… …
1341#endif 1765#endif
1342 } 1766 }
1343} 1767}
1344 1768
1345void 1769void
1346ev_signal_stop (EV_P_ struct ev_signal *w) 1770ev_signal_stop (EV_P_ ev_signal *w)
1347{ 1771{
1348 ev_clear_pending (EV_A_ (W)w); 1772 clear_pending (EV_A_ (W)w);
1349 if (!ev_is_active (w)) 1773 if (expect_false (!ev_is_active (w)))
1350 return; 1774 return;
1351 1775
1352 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); 1776 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1353 ev_stop (EV_A_ (W)w); 1777 ev_stop (EV_A_ (W)w);
1354 1778
1355 if (!signals [w->signum - 1].head) 1779 if (!signals [w->signum - 1].head)
1356 signal (w->signum, SIG_DFL); 1780 signal (w->signum, SIG_DFL);
1357} 1781}
1358 1782
1359void 1783void
1360ev_child_start (EV_P_ struct ev_child *w) 1784ev_child_start (EV_P_ ev_child *w)
1361{ 1785{
1362#if EV_MULTIPLICITY 1786#if EV_MULTIPLICITY
1363 assert (("child watchers are only supported in the default loop", loop == default_loop)); 1787 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1364#endif 1788#endif
1365 if (ev_is_active (w)) 1789 if (expect_false (ev_is_active (w)))
1366 return; 1790 return;
1367 1791
1368 ev_start (EV_A_ (W)w, 1); 1792 ev_start (EV_A_ (W)w, 1);
1369 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1793 wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1370} 1794}
1371 1795
1372void 1796void
1373ev_child_stop (EV_P_ struct ev_child *w) 1797ev_child_stop (EV_P_ ev_child *w)
1374{ 1798{
1375 ev_clear_pending (EV_A_ (W)w); 1799 clear_pending (EV_A_ (W)w);
1376 if (ev_is_active (w)) 1800 if (expect_false (!ev_is_active (w)))
1377 return; 1801 return;
1378 1802
1379 wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1803 wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1380 ev_stop (EV_A_ (W)w); 1804 ev_stop (EV_A_ (W)w);
1381} 1805}
1382 1806
1807#if EV_STAT_ENABLE
1808
1809# ifdef _WIN32
1810# undef lstat
1811# define lstat(a,b) _stati64 (a,b)
1812# endif
1813
1814#define DEF_STAT_INTERVAL 5.0074891
1815#define MIN_STAT_INTERVAL 0.1074891
1816
1817static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
1818
1819#if EV_USE_INOTIFY
1820# define EV_INOTIFY_BUFSIZE 8192
1821
1822static void noinline
1823infy_add (EV_P_ ev_stat *w)
1824{
1825 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);
1826
1827 if (w->wd < 0)
1828 {
1829 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
1830
1831 /* monitor some parent directory for speedup hints */
1832 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
1833 {
1834 char path [4096];
1835 strcpy (path, w->path);
1836
1837 do
1838 {
1839 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
1840 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
1841
1842 char *pend = strrchr (path, '/');
1843
1844 if (!pend)
1845 break; /* whoops, no '/', complain to your admin */
1846
1847 *pend = 0;
1848 w->wd = inotify_add_watch (fs_fd, path, mask);
1849 }
1850 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
1851 }
1852 }
1853 else
1854 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
1855
1856 if (w->wd >= 0)
1857 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
1858}
1859
1860static void noinline
1861infy_del (EV_P_ ev_stat *w)
1862{
1863 int slot;
1864 int wd = w->wd;
1865
1866 if (wd < 0)
1867 return;
1868
1869 w->wd = -2;
1870 slot = wd & (EV_INOTIFY_HASHSIZE - 1);
1871 wlist_del (&fs_hash [slot].head, (WL)w);
1872
1873 /* remove this watcher, if others are watching it, they will rearm */
1874 inotify_rm_watch (fs_fd, wd);
1875}
1876
1877static void noinline
1878infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
1879{
1880 if (slot < 0)
1881 /* overflow, need to check for all hahs slots */
1882 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
1883 infy_wd (EV_A_ slot, wd, ev);
1884 else
1885 {
1886 WL w_;
1887
1888 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
1889 {
1890 ev_stat *w = (ev_stat *)w_;
1891 w_ = w_->next; /* lets us remove this watcher and all before it */
1892
1893 if (w->wd == wd || wd == -1)
1894 {
1895 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
1896 {
1897 w->wd = -1;
1898 infy_add (EV_A_ w); /* re-add, no matter what */
1899 }
1900
1901 stat_timer_cb (EV_A_ &w->timer, 0);
1902 }
1903 }
1904 }
1905}
1906
1907static void
1908infy_cb (EV_P_ ev_io *w, int revents)
1909{
1910 char buf [EV_INOTIFY_BUFSIZE];
1911 struct inotify_event *ev = (struct inotify_event *)buf;
1912 int ofs;
1913 int len = read (fs_fd, buf, sizeof (buf));
1914
1915 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
1916 infy_wd (EV_A_ ev->wd, ev->wd, ev);
1917}
1918
1919void inline_size
1920infy_init (EV_P)
1921{
1922 if (fs_fd != -2)
1923 return;
1924
1925 fs_fd = inotify_init ();
1926
1927 if (fs_fd >= 0)
1928 {
1929 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
1930 ev_set_priority (&fs_w, EV_MAXPRI);
1931 ev_io_start (EV_A_ &fs_w);
1932 }
1933}
1934
1935void inline_size
1936infy_fork (EV_P)
1937{
1938 int slot;
1939
1940 if (fs_fd < 0)
1941 return;
1942
1943 close (fs_fd);
1944 fs_fd = inotify_init ();
1945
1946 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
1947 {
1948 WL w_ = fs_hash [slot].head;
1949 fs_hash [slot].head = 0;
1950
1951 while (w_)
1952 {
1953 ev_stat *w = (ev_stat *)w_;
1954 w_ = w_->next; /* lets us add this watcher */
1955
1956 w->wd = -1;
1957
1958 if (fs_fd >= 0)
1959 infy_add (EV_A_ w); /* re-add, no matter what */
1960 else
1961 ev_timer_start (EV_A_ &w->timer);
1962 }
1963
1964 }
1965}
1966
1967#endif
1968
1969void
1970ev_stat_stat (EV_P_ ev_stat *w)
1971{
1972 if (lstat (w->path, &w->attr) < 0)
1973 w->attr.st_nlink = 0;
1974 else if (!w->attr.st_nlink)
1975 w->attr.st_nlink = 1;
1976}
1977
1978static void noinline
1979stat_timer_cb (EV_P_ ev_timer *w_, int revents)
1980{
1981 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
1982
1983 /* we copy this here each the time so that */
1984 /* prev has the old value when the callback gets invoked */
1985 w->prev = w->attr;
1986 ev_stat_stat (EV_A_ w);
1987
1988 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
1989 if (
1990 w->prev.st_dev != w->attr.st_dev
1991 || w->prev.st_ino != w->attr.st_ino
1992 || w->prev.st_mode != w->attr.st_mode
1993 || w->prev.st_nlink != w->attr.st_nlink
1994 || w->prev.st_uid != w->attr.st_uid
1995 || w->prev.st_gid != w->attr.st_gid
1996 || w->prev.st_rdev != w->attr.st_rdev
1997 || w->prev.st_size != w->attr.st_size
1998 || w->prev.st_atime != w->attr.st_atime
1999 || w->prev.st_mtime != w->attr.st_mtime
2000 || w->prev.st_ctime != w->attr.st_ctime
2001 ) {
2002 #if EV_USE_INOTIFY
2003 infy_del (EV_A_ w);
2004 infy_add (EV_A_ w);
2005 ev_stat_stat (EV_A_ w); /* avoid race... */
2006 #endif
2007
2008 ev_feed_event (EV_A_ w, EV_STAT);
2009 }
2010}
2011
2012void
2013ev_stat_start (EV_P_ ev_stat *w)
2014{
2015 if (expect_false (ev_is_active (w)))
2016 return;
2017
2018 /* since we use memcmp, we need to clear any padding data etc. */
2019 memset (&w->prev, 0, sizeof (ev_statdata));
2020 memset (&w->attr, 0, sizeof (ev_statdata));
2021
2022 ev_stat_stat (EV_A_ w);
2023
2024 if (w->interval < MIN_STAT_INTERVAL)
2025 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2026
2027 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
2028 ev_set_priority (&w->timer, ev_priority (w));
2029
2030#if EV_USE_INOTIFY
2031 infy_init (EV_A);
2032
2033 if (fs_fd >= 0)
2034 infy_add (EV_A_ w);
2035 else
2036#endif
2037 ev_timer_start (EV_A_ &w->timer);
2038
2039 ev_start (EV_A_ (W)w, 1);
2040}
2041
2042void
2043ev_stat_stop (EV_P_ ev_stat *w)
2044{
2045 clear_pending (EV_A_ (W)w);
2046 if (expect_false (!ev_is_active (w)))
2047 return;
2048
2049#if EV_USE_INOTIFY
2050 infy_del (EV_A_ w);
2051#endif
2052 ev_timer_stop (EV_A_ &w->timer);
2053
2054 ev_stop (EV_A_ (W)w);
2055}
2056#endif
2057
2058#if EV_IDLE_ENABLE
2059void
2060ev_idle_start (EV_P_ ev_idle *w)
2061{
2062 if (expect_false (ev_is_active (w)))
2063 return;
2064
2065 pri_adjust (EV_A_ (W)w);
2066
2067 {
2068 int active = ++idlecnt [ABSPRI (w)];
2069
2070 ++idleall;
2071 ev_start (EV_A_ (W)w, active);
2072
2073 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2074 idles [ABSPRI (w)][active - 1] = w;
2075 }
2076}
2077
2078void
2079ev_idle_stop (EV_P_ ev_idle *w)
2080{
2081 clear_pending (EV_A_ (W)w);
2082 if (expect_false (!ev_is_active (w)))
2083 return;
2084
2085 {
2086 int active = ((W)w)->active;
2087
2088 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2089 ((W)idles [ABSPRI (w)][active - 1])->active = active;
2090
2091 ev_stop (EV_A_ (W)w);
2092 --idleall;
2093 }
2094}
2095#endif
2096
2097void
2098ev_prepare_start (EV_P_ ev_prepare *w)
2099{
2100 if (expect_false (ev_is_active (w)))
2101 return;
2102
2103 ev_start (EV_A_ (W)w, ++preparecnt);
2104 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2105 prepares [preparecnt - 1] = w;
2106}
2107
2108void
2109ev_prepare_stop (EV_P_ ev_prepare *w)
2110{
2111 clear_pending (EV_A_ (W)w);
2112 if (expect_false (!ev_is_active (w)))
2113 return;
2114
2115 {
2116 int active = ((W)w)->active;
2117 prepares [active - 1] = prepares [--preparecnt];
2118 ((W)prepares [active - 1])->active = active;
2119 }
2120
2121 ev_stop (EV_A_ (W)w);
2122}
2123
2124void
2125ev_check_start (EV_P_ ev_check *w)
2126{
2127 if (expect_false (ev_is_active (w)))
2128 return;
2129
2130 ev_start (EV_A_ (W)w, ++checkcnt);
2131 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2132 checks [checkcnt - 1] = w;
2133}
2134
2135void
2136ev_check_stop (EV_P_ ev_check *w)
2137{
2138 clear_pending (EV_A_ (W)w);
2139 if (expect_false (!ev_is_active (w)))
2140 return;
2141
2142 {
2143 int active = ((W)w)->active;
2144 checks [active - 1] = checks [--checkcnt];
2145 ((W)checks [active - 1])->active = active;
2146 }
2147
2148 ev_stop (EV_A_ (W)w);
2149}
2150
2151#if EV_EMBED_ENABLE
2152void noinline
2153ev_embed_sweep (EV_P_ ev_embed *w)
2154{
2155 ev_loop (w->loop, EVLOOP_NONBLOCK);
2156}
2157
2158static void
2159embed_cb (EV_P_ ev_io *io, int revents)
2160{
2161 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2162
2163 if (ev_cb (w))
2164 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2165 else
2166 ev_embed_sweep (loop, w);
2167}
2168
2169void
2170ev_embed_start (EV_P_ ev_embed *w)
2171{
2172 if (expect_false (ev_is_active (w)))
2173 return;
2174
2175 {
2176 struct ev_loop *loop = w->loop;
2177 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2178 ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
2179 }
2180
2181 ev_set_priority (&w->io, ev_priority (w));
2182 ev_io_start (EV_A_ &w->io);
2183
2184 ev_start (EV_A_ (W)w, 1);
2185}
2186
2187void
2188ev_embed_stop (EV_P_ ev_embed *w)
2189{
2190 clear_pending (EV_A_ (W)w);
2191 if (expect_false (!ev_is_active (w)))
2192 return;
2193
2194 ev_io_stop (EV_A_ &w->io);
2195
2196 ev_stop (EV_A_ (W)w);
2197}
2198#endif
2199
2200#if EV_FORK_ENABLE
2201void
2202ev_fork_start (EV_P_ ev_fork *w)
2203{
2204 if (expect_false (ev_is_active (w)))
2205 return;
2206
2207 ev_start (EV_A_ (W)w, ++forkcnt);
2208 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2209 forks [forkcnt - 1] = w;
2210}
2211
2212void
2213ev_fork_stop (EV_P_ ev_fork *w)
2214{
2215 clear_pending (EV_A_ (W)w);
2216 if (expect_false (!ev_is_active (w)))
2217 return;
2218
2219 {
2220 int active = ((W)w)->active;
2221 forks [active - 1] = forks [--forkcnt];
2222 ((W)forks [active - 1])->active = active;
2223 }
2224
2225 ev_stop (EV_A_ (W)w);
2226}
2227#endif
2228
1383/*****************************************************************************/ 2229/*****************************************************************************/
1384 2230
1385struct ev_once 2231struct ev_once
1386{ 2232{
1387 struct ev_io io; 2233 ev_io io;
1388 struct ev_timer to; 2234 ev_timer to;
1389 void (*cb)(int revents, void *arg); 2235 void (*cb)(int revents, void *arg);
1390 void *arg; 2236 void *arg;
1391}; 2237};
1392 2238
1393static void 2239static void
… …
1396 void (*cb)(int revents, void *arg) = once->cb; 2242 void (*cb)(int revents, void *arg) = once->cb;
1397 void *arg = once->arg; 2243 void *arg = once->arg;
1398 2244
1399 ev_io_stop (EV_A_ &once->io); 2245 ev_io_stop (EV_A_ &once->io);
1400 ev_timer_stop (EV_A_ &once->to); 2246 ev_timer_stop (EV_A_ &once->to);
1401 free (once); 2247 ev_free (once);
1402 2248
1403 cb (revents, arg); 2249 cb (revents, arg);
1404} 2250}
1405 2251
1406static void 2252static void
1407once_cb_io (EV_P_ struct ev_io *w, int revents) 2253once_cb_io (EV_P_ ev_io *w, int revents)
1408{ 2254{
1409 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 2255 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1410} 2256}
1411 2257
1412static void 2258static void
1413once_cb_to (EV_P_ struct ev_timer *w, int revents) 2259once_cb_to (EV_P_ ev_timer *w, int revents)
1414{ 2260{
1415 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 2261 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1416} 2262}
1417 2263
1418void 2264void
1419ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 2265ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1420{ 2266{
1421 struct ev_once *once = malloc (sizeof (struct ev_once)); 2267 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1422 2268
1423 if (!once) 2269 if (expect_false (!once))
2270 {
1424 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 2271 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1425 else 2272 return;
1426 { 2273 }
2274
1427 once->cb = cb; 2275 once->cb = cb;
1428 once->arg = arg; 2276 once->arg = arg;
1429 2277
1430 ev_watcher_init (&once->io, once_cb_io); 2278 ev_init (&once->io, once_cb_io);
1431 if (fd >= 0) 2279 if (fd >= 0)
1432 { 2280 {
1433 ev_io_set (&once->io, fd, events); 2281 ev_io_set (&once->io, fd, events);
1434 ev_io_start (EV_A_ &once->io); 2282 ev_io_start (EV_A_ &once->io);
1435 } 2283 }
1436 2284
1437 ev_watcher_init (&once->to, once_cb_to); 2285 ev_init (&once->to, once_cb_to);
1438 if (timeout >= 0.) 2286 if (timeout >= 0.)
1439 { 2287 {
1440 ev_timer_set (&once->to, timeout, 0.); 2288 ev_timer_set (&once->to, timeout, 0.);
1441 ev_timer_start (EV_A_ &once->to); 2289 ev_timer_start (EV_A_ &once->to);
1442 }
1443 } 2290 }
1444} 2291}
1445 2292
2293#ifdef __cplusplus
2294}
2295#endif
2296

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