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Comparing libev/ev.c (file contents):
Revision 1.65 by root, Sun Nov 4 23:29:48 2007 UTC vs.
Revision 1.178 by root, Tue Dec 11 18:36:11 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 * Better solutions welcome.
228 */
229#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
230
123#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 231#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
124#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */ 232#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
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 */ 233/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
127
128#include "ev.h"
129 234
130#if __GNUC__ >= 3 235#if __GNUC__ >= 3
131# define expect(expr,value) __builtin_expect ((expr),(value)) 236# define expect(expr,value) __builtin_expect ((expr),(value))
132# define inline inline 237# define noinline __attribute__ ((noinline))
133#else 238#else
134# define expect(expr,value) (expr) 239# define expect(expr,value) (expr)
135# define inline static 240# define noinline
241# if __STDC_VERSION__ < 199901L
242# define inline
243# endif
136#endif 244#endif
137 245
138#define expect_false(expr) expect ((expr) != 0, 0) 246#define expect_false(expr) expect ((expr) != 0, 0)
139#define expect_true(expr) expect ((expr) != 0, 1) 247#define expect_true(expr) expect ((expr) != 0, 1)
248#define inline_size static inline
249
250#if EV_MINIMAL
251# define inline_speed static noinline
252#else
253# define inline_speed static inline
254#endif
140 255
141#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 256#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
142#define ABSPRI(w) ((w)->priority - EV_MINPRI) 257#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
143 258
259#define EMPTY /* required for microsofts broken pseudo-c compiler */
260#define EMPTY2(a,b) /* used to suppress some warnings */
261
144typedef struct ev_watcher *W; 262typedef ev_watcher *W;
145typedef struct ev_watcher_list *WL; 263typedef ev_watcher_list *WL;
146typedef struct ev_watcher_time *WT; 264typedef ev_watcher_time *WT;
147 265
148static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 266static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
149 267
268#ifdef _WIN32
269# include "ev_win32.c"
270#endif
271
150/*****************************************************************************/ 272/*****************************************************************************/
151 273
274static void (*syserr_cb)(const char *msg);
275
276void
277ev_set_syserr_cb (void (*cb)(const char *msg))
278{
279 syserr_cb = cb;
280}
281
282static void noinline
283syserr (const char *msg)
284{
285 if (!msg)
286 msg = "(libev) system error";
287
288 if (syserr_cb)
289 syserr_cb (msg);
290 else
291 {
292 perror (msg);
293 abort ();
294 }
295}
296
297static void *(*alloc)(void *ptr, long size);
298
299void
300ev_set_allocator (void *(*cb)(void *ptr, long size))
301{
302 alloc = cb;
303}
304
305inline_speed void *
306ev_realloc (void *ptr, long size)
307{
308 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
309
310 if (!ptr && size)
311 {
312 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
313 abort ();
314 }
315
316 return ptr;
317}
318
319#define ev_malloc(size) ev_realloc (0, (size))
320#define ev_free(ptr) ev_realloc ((ptr), 0)
321
322/*****************************************************************************/
323
152typedef struct 324typedef struct
153{ 325{
154 struct ev_watcher_list *head; 326 WL head;
155 unsigned char events; 327 unsigned char events;
156 unsigned char reify; 328 unsigned char reify;
329#if EV_SELECT_IS_WINSOCKET
330 SOCKET handle;
331#endif
157} ANFD; 332} ANFD;
158 333
159typedef struct 334typedef struct
160{ 335{
161 W w; 336 W w;
162 int events; 337 int events;
163} ANPENDING; 338} ANPENDING;
164 339
340#if EV_USE_INOTIFY
341typedef struct
342{
343 WL head;
344} ANFS;
345#endif
346
165#if EV_MULTIPLICITY 347#if EV_MULTIPLICITY
166 348
167struct ev_loop 349 struct ev_loop
168{ 350 {
351 ev_tstamp ev_rt_now;
352 #define ev_rt_now ((loop)->ev_rt_now)
169# define VAR(name,decl) decl; 353 #define VAR(name,decl) decl;
170# include "ev_vars.h" 354 #include "ev_vars.h"
171};
172# undef VAR 355 #undef VAR
356 };
173# include "ev_wrap.h" 357 #include "ev_wrap.h"
358
359 static struct ev_loop default_loop_struct;
360 struct ev_loop *ev_default_loop_ptr;
174 361
175#else 362#else
176 363
364 ev_tstamp ev_rt_now;
177# define VAR(name,decl) static decl; 365 #define VAR(name,decl) static decl;
178# include "ev_vars.h" 366 #include "ev_vars.h"
179# undef VAR 367 #undef VAR
368
369 static int ev_default_loop_ptr;
180 370
181#endif 371#endif
182 372
183/*****************************************************************************/ 373/*****************************************************************************/
184 374
185inline ev_tstamp 375ev_tstamp
186ev_time (void) 376ev_time (void)
187{ 377{
188#if EV_USE_REALTIME 378#if EV_USE_REALTIME
189 struct timespec ts; 379 struct timespec ts;
190 clock_gettime (CLOCK_REALTIME, &ts); 380 clock_gettime (CLOCK_REALTIME, &ts);
… …
194 gettimeofday (&tv, 0); 384 gettimeofday (&tv, 0);
195 return tv.tv_sec + tv.tv_usec * 1e-6; 385 return tv.tv_sec + tv.tv_usec * 1e-6;
196#endif 386#endif
197} 387}
198 388
199inline ev_tstamp 389ev_tstamp inline_size
200get_clock (void) 390get_clock (void)
201{ 391{
202#if EV_USE_MONOTONIC 392#if EV_USE_MONOTONIC
203 if (expect_true (have_monotonic)) 393 if (expect_true (have_monotonic))
204 { 394 {
… …
209#endif 399#endif
210 400
211 return ev_time (); 401 return ev_time ();
212} 402}
213 403
404#if EV_MULTIPLICITY
214ev_tstamp 405ev_tstamp
215ev_now (EV_P) 406ev_now (EV_P)
216{ 407{
217 return rt_now; 408 return ev_rt_now;
218} 409}
410#endif
219 411
220#define array_roundsize(base,n) ((n) | 4 & ~3) 412int inline_size
413array_nextsize (int elem, int cur, int cnt)
414{
415 int ncur = cur + 1;
221 416
417 do
418 ncur <<= 1;
419 while (cnt > ncur);
420
421 /* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */
422 if (elem * ncur > 4096)
423 {
424 ncur *= elem;
425 ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095;
426 ncur = ncur - sizeof (void *) * 4;
427 ncur /= elem;
428 }
429
430 return ncur;
431}
432
433static noinline void *
434array_realloc (int elem, void *base, int *cur, int cnt)
435{
436 *cur = array_nextsize (elem, *cur, cnt);
437 return ev_realloc (base, elem * *cur);
438}
439
222#define array_needsize(base,cur,cnt,init) \ 440#define array_needsize(type,base,cur,cnt,init) \
223 if (expect_false ((cnt) > cur)) \ 441 if (expect_false ((cnt) > (cur))) \
224 { \ 442 { \
225 int newcnt = cur; \ 443 int ocur_ = (cur); \
226 do \ 444 (base) = (type *)array_realloc \
227 { \ 445 (sizeof (type), (base), &(cur), (cnt)); \
228 newcnt = array_roundsize (base, newcnt << 1); \ 446 init ((base) + (ocur_), (cur) - ocur_); \
229 } \ 447 }
230 while ((cnt) > newcnt); \ 448
449#if 0
450#define array_slim(type,stem) \
451 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
231 \ 452 { \
232 base = realloc (base, sizeof (*base) * (newcnt)); \ 453 stem ## max = array_roundsize (stem ## cnt >> 1); \
233 init (base + cur, newcnt - cur); \ 454 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
234 cur = newcnt; \ 455 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
235 } 456 }
457#endif
236 458
237#define array_free(stem, idx) \ 459#define array_free(stem, idx) \
238 free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 460 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
239 461
240/*****************************************************************************/ 462/*****************************************************************************/
241 463
242static void 464void noinline
465ev_feed_event (EV_P_ void *w, int revents)
466{
467 W w_ = (W)w;
468 int pri = ABSPRI (w_);
469
470 if (expect_false (w_->pending))
471 pendings [pri][w_->pending - 1].events |= revents;
472 else
473 {
474 w_->pending = ++pendingcnt [pri];
475 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
476 pendings [pri][w_->pending - 1].w = w_;
477 pendings [pri][w_->pending - 1].events = revents;
478 }
479}
480
481void inline_size
482queue_events (EV_P_ W *events, int eventcnt, int type)
483{
484 int i;
485
486 for (i = 0; i < eventcnt; ++i)
487 ev_feed_event (EV_A_ events [i], type);
488}
489
490/*****************************************************************************/
491
492void inline_size
243anfds_init (ANFD *base, int count) 493anfds_init (ANFD *base, int count)
244{ 494{
245 while (count--) 495 while (count--)
246 { 496 {
247 base->head = 0; 497 base->head = 0;
… …
250 500
251 ++base; 501 ++base;
252 } 502 }
253} 503}
254 504
255static void 505void inline_speed
256event (EV_P_ W w, int events)
257{
258 if (w->pending)
259 {
260 pendings [ABSPRI (w)][w->pending - 1].events |= events;
261 return;
262 }
263
264 w->pending = ++pendingcnt [ABSPRI (w)];
265 array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], );
266 pendings [ABSPRI (w)][w->pending - 1].w = w;
267 pendings [ABSPRI (w)][w->pending - 1].events = events;
268}
269
270static void
271queue_events (EV_P_ W *events, int eventcnt, int type)
272{
273 int i;
274
275 for (i = 0; i < eventcnt; ++i)
276 event (EV_A_ events [i], type);
277}
278
279static void
280fd_event (EV_P_ int fd, int events) 506fd_event (EV_P_ int fd, int revents)
281{ 507{
282 ANFD *anfd = anfds + fd; 508 ANFD *anfd = anfds + fd;
283 struct ev_io *w; 509 ev_io *w;
284 510
285 for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) 511 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
286 { 512 {
287 int ev = w->events & events; 513 int ev = w->events & revents;
288 514
289 if (ev) 515 if (ev)
290 event (EV_A_ (W)w, ev); 516 ev_feed_event (EV_A_ (W)w, ev);
291 } 517 }
292} 518}
293 519
294/*****************************************************************************/ 520void
521ev_feed_fd_event (EV_P_ int fd, int revents)
522{
523 if (fd >= 0 && fd < anfdmax)
524 fd_event (EV_A_ fd, revents);
525}
295 526
296static void 527void inline_size
297fd_reify (EV_P) 528fd_reify (EV_P)
298{ 529{
299 int i; 530 int i;
300 531
301 for (i = 0; i < fdchangecnt; ++i) 532 for (i = 0; i < fdchangecnt; ++i)
302 { 533 {
303 int fd = fdchanges [i]; 534 int fd = fdchanges [i];
304 ANFD *anfd = anfds + fd; 535 ANFD *anfd = anfds + fd;
305 struct ev_io *w; 536 ev_io *w;
306 537
307 int events = 0; 538 int events = 0;
308 539
309 for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) 540 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
310 events |= w->events; 541 events |= w->events;
311 542
543#if EV_SELECT_IS_WINSOCKET
544 if (events)
545 {
546 unsigned long argp;
547 anfd->handle = _get_osfhandle (fd);
548 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
549 }
550#endif
551
312 anfd->reify = 0; 552 anfd->reify = 0;
313 553
314 method_modify (EV_A_ fd, anfd->events, events); 554 backend_modify (EV_A_ fd, anfd->events, events);
315 anfd->events = events; 555 anfd->events = events;
316 } 556 }
317 557
318 fdchangecnt = 0; 558 fdchangecnt = 0;
319} 559}
320 560
321static void 561void inline_size
322fd_change (EV_P_ int fd) 562fd_change (EV_P_ int fd)
323{ 563{
324 if (anfds [fd].reify || fdchangecnt < 0) 564 if (expect_false (anfds [fd].reify))
325 return; 565 return;
326 566
327 anfds [fd].reify = 1; 567 anfds [fd].reify = 1;
328 568
329 ++fdchangecnt; 569 ++fdchangecnt;
330 array_needsize (fdchanges, fdchangemax, fdchangecnt, ); 570 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
331 fdchanges [fdchangecnt - 1] = fd; 571 fdchanges [fdchangecnt - 1] = fd;
332} 572}
333 573
334static void 574void inline_speed
335fd_kill (EV_P_ int fd) 575fd_kill (EV_P_ int fd)
336{ 576{
337 struct ev_io *w; 577 ev_io *w;
338 578
339 while ((w = (struct ev_io *)anfds [fd].head)) 579 while ((w = (ev_io *)anfds [fd].head))
340 { 580 {
341 ev_io_stop (EV_A_ w); 581 ev_io_stop (EV_A_ w);
342 event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 582 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
343 } 583 }
584}
585
586int inline_size
587fd_valid (int fd)
588{
589#ifdef _WIN32
590 return _get_osfhandle (fd) != -1;
591#else
592 return fcntl (fd, F_GETFD) != -1;
593#endif
344} 594}
345 595
346/* called on EBADF to verify fds */ 596/* called on EBADF to verify fds */
347static void 597static void noinline
348fd_ebadf (EV_P) 598fd_ebadf (EV_P)
349{ 599{
350 int fd; 600 int fd;
351 601
352 for (fd = 0; fd < anfdmax; ++fd) 602 for (fd = 0; fd < anfdmax; ++fd)
353 if (anfds [fd].events) 603 if (anfds [fd].events)
354 if (fcntl (fd, F_GETFD) == -1 && errno == EBADF) 604 if (!fd_valid (fd) == -1 && errno == EBADF)
355 fd_kill (EV_A_ fd); 605 fd_kill (EV_A_ fd);
356} 606}
357 607
358/* called on ENOMEM in select/poll to kill some fds and retry */ 608/* called on ENOMEM in select/poll to kill some fds and retry */
359static void 609static void noinline
360fd_enomem (EV_P) 610fd_enomem (EV_P)
361{ 611{
362 int fd; 612 int fd;
363 613
364 for (fd = anfdmax; fd--; ) 614 for (fd = anfdmax; fd--; )
365 if (anfds [fd].events) 615 if (anfds [fd].events)
366 { 616 {
367 close (fd);
368 fd_kill (EV_A_ fd); 617 fd_kill (EV_A_ fd);
369 return; 618 return;
370 } 619 }
371} 620}
372 621
373/* susually called after fork if method needs to re-arm all fds from scratch */ 622/* usually called after fork if backend needs to re-arm all fds from scratch */
374static void 623static void noinline
375fd_rearm_all (EV_P) 624fd_rearm_all (EV_P)
376{ 625{
377 int fd; 626 int fd;
378 627
379 /* this should be highly optimised to not do anything but set a flag */
380 for (fd = 0; fd < anfdmax; ++fd) 628 for (fd = 0; fd < anfdmax; ++fd)
381 if (anfds [fd].events) 629 if (anfds [fd].events)
382 { 630 {
383 anfds [fd].events = 0; 631 anfds [fd].events = 0;
384 fd_change (EV_A_ fd); 632 fd_change (EV_A_ fd);
385 } 633 }
386} 634}
387 635
388/*****************************************************************************/ 636/*****************************************************************************/
389 637
390static void 638void inline_speed
391upheap (WT *heap, int k) 639upheap (WT *heap, int k)
392{ 640{
393 WT w = heap [k]; 641 WT w = heap [k];
394 642
395 while (k && heap [k >> 1]->at > w->at) 643 while (k && heap [k >> 1]->at > w->at)
… …
402 heap [k] = w; 650 heap [k] = w;
403 ((W)heap [k])->active = k + 1; 651 ((W)heap [k])->active = k + 1;
404 652
405} 653}
406 654
407static void 655void inline_speed
408downheap (WT *heap, int N, int k) 656downheap (WT *heap, int N, int k)
409{ 657{
410 WT w = heap [k]; 658 WT w = heap [k];
411 659
412 while (k < (N >> 1)) 660 while (k < (N >> 1))
… …
426 674
427 heap [k] = w; 675 heap [k] = w;
428 ((W)heap [k])->active = k + 1; 676 ((W)heap [k])->active = k + 1;
429} 677}
430 678
679void inline_size
680adjustheap (WT *heap, int N, int k)
681{
682 upheap (heap, k);
683 downheap (heap, N, k);
684}
685
431/*****************************************************************************/ 686/*****************************************************************************/
432 687
433typedef struct 688typedef struct
434{ 689{
435 struct ev_watcher_list *head; 690 WL head;
436 sig_atomic_t volatile gotsig; 691 sig_atomic_t volatile gotsig;
437} ANSIG; 692} ANSIG;
438 693
439static ANSIG *signals; 694static ANSIG *signals;
440static int signalmax; 695static int signalmax;
441 696
442static int sigpipe [2]; 697static int sigpipe [2];
443static sig_atomic_t volatile gotsig; 698static sig_atomic_t volatile gotsig;
444static struct ev_io sigev; 699static ev_io sigev;
445 700
446static void 701void inline_size
447signals_init (ANSIG *base, int count) 702signals_init (ANSIG *base, int count)
448{ 703{
449 while (count--) 704 while (count--)
450 { 705 {
451 base->head = 0; 706 base->head = 0;
… …
456} 711}
457 712
458static void 713static void
459sighandler (int signum) 714sighandler (int signum)
460{ 715{
716#if _WIN32
717 signal (signum, sighandler);
718#endif
719
461 signals [signum - 1].gotsig = 1; 720 signals [signum - 1].gotsig = 1;
462 721
463 if (!gotsig) 722 if (!gotsig)
464 { 723 {
465 int old_errno = errno; 724 int old_errno = errno;
… …
467 write (sigpipe [1], &signum, 1); 726 write (sigpipe [1], &signum, 1);
468 errno = old_errno; 727 errno = old_errno;
469 } 728 }
470} 729}
471 730
731void noinline
732ev_feed_signal_event (EV_P_ int signum)
733{
734 WL w;
735
736#if EV_MULTIPLICITY
737 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
738#endif
739
740 --signum;
741
742 if (signum < 0 || signum >= signalmax)
743 return;
744
745 signals [signum].gotsig = 0;
746
747 for (w = signals [signum].head; w; w = w->next)
748 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
749}
750
472static void 751static void
473sigcb (EV_P_ struct ev_io *iow, int revents) 752sigcb (EV_P_ ev_io *iow, int revents)
474{ 753{
475 struct ev_watcher_list *w;
476 int signum; 754 int signum;
477 755
478 read (sigpipe [0], &revents, 1); 756 read (sigpipe [0], &revents, 1);
479 gotsig = 0; 757 gotsig = 0;
480 758
481 for (signum = signalmax; signum--; ) 759 for (signum = signalmax; signum--; )
482 if (signals [signum].gotsig) 760 if (signals [signum].gotsig)
483 { 761 ev_feed_signal_event (EV_A_ signum + 1);
484 signals [signum].gotsig = 0;
485
486 for (w = signals [signum].head; w; w = w->next)
487 event (EV_A_ (W)w, EV_SIGNAL);
488 }
489} 762}
490 763
491static void 764void inline_speed
765fd_intern (int fd)
766{
767#ifdef _WIN32
768 int arg = 1;
769 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
770#else
771 fcntl (fd, F_SETFD, FD_CLOEXEC);
772 fcntl (fd, F_SETFL, O_NONBLOCK);
773#endif
774}
775
776static void noinline
492siginit (EV_P) 777siginit (EV_P)
493{ 778{
494#ifndef WIN32 779 fd_intern (sigpipe [0]);
495 fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC); 780 fd_intern (sigpipe [1]);
496 fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
497
498 /* rather than sort out wether we really need nb, set it */
499 fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
500 fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
501#endif
502 781
503 ev_io_set (&sigev, sigpipe [0], EV_READ); 782 ev_io_set (&sigev, sigpipe [0], EV_READ);
504 ev_io_start (EV_A_ &sigev); 783 ev_io_start (EV_A_ &sigev);
505 ev_unref (EV_A); /* child watcher should not keep loop alive */ 784 ev_unref (EV_A); /* child watcher should not keep loop alive */
506} 785}
507 786
508/*****************************************************************************/ 787/*****************************************************************************/
509 788
789static ev_child *childs [EV_PID_HASHSIZE];
790
510#ifndef WIN32 791#ifndef _WIN32
511 792
512static struct ev_child *childs [PID_HASHSIZE];
513static struct ev_signal childev; 793static ev_signal childev;
794
795void inline_speed
796child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
797{
798 ev_child *w;
799
800 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
801 if (w->pid == pid || !w->pid)
802 {
803 ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */
804 w->rpid = pid;
805 w->rstatus = status;
806 ev_feed_event (EV_A_ (W)w, EV_CHILD);
807 }
808}
514 809
515#ifndef WCONTINUED 810#ifndef WCONTINUED
516# define WCONTINUED 0 811# define WCONTINUED 0
517#endif 812#endif
518 813
519static void 814static void
520child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
521{
522 struct ev_child *w;
523
524 for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
525 if (w->pid == pid || !w->pid)
526 {
527 ev_priority (w) = ev_priority (sw); /* need to do it *now* */
528 w->rpid = pid;
529 w->rstatus = status;
530 event (EV_A_ (W)w, EV_CHILD);
531 }
532}
533
534static void
535childcb (EV_P_ struct ev_signal *sw, int revents) 815childcb (EV_P_ ev_signal *sw, int revents)
536{ 816{
537 int pid, status; 817 int pid, status;
538 818
819 /* some systems define WCONTINUED but then fail to support it (linux 2.4) */
539 if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) 820 if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
540 { 821 if (!WCONTINUED
822 || errno != EINVAL
823 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
824 return;
825
541 /* make sure we are called again until all childs have been reaped */ 826 /* make sure we are called again until all childs have been reaped */
827 /* we need to do it this way so that the callback gets called before we continue */
542 event (EV_A_ (W)sw, EV_SIGNAL); 828 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
543 829
544 child_reap (EV_A_ sw, pid, pid, status); 830 child_reap (EV_A_ sw, pid, pid, status);
831 if (EV_PID_HASHSIZE > 1)
545 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */ 832 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
546 }
547} 833}
548 834
549#endif 835#endif
550 836
551/*****************************************************************************/ 837/*****************************************************************************/
552 838
839#if EV_USE_PORT
840# include "ev_port.c"
841#endif
553#if EV_USE_KQUEUE 842#if EV_USE_KQUEUE
554# include "ev_kqueue.c" 843# include "ev_kqueue.c"
555#endif 844#endif
556#if EV_USE_EPOLL 845#if EV_USE_EPOLL
557# include "ev_epoll.c" 846# include "ev_epoll.c"
… …
574{ 863{
575 return EV_VERSION_MINOR; 864 return EV_VERSION_MINOR;
576} 865}
577 866
578/* return true if we are running with elevated privileges and should ignore env variables */ 867/* return true if we are running with elevated privileges and should ignore env variables */
579static int 868int inline_size
580enable_secure (void) 869enable_secure (void)
581{ 870{
582#ifdef WIN32 871#ifdef _WIN32
583 return 0; 872 return 0;
584#else 873#else
585 return getuid () != geteuid () 874 return getuid () != geteuid ()
586 || getgid () != getegid (); 875 || getgid () != getegid ();
587#endif 876#endif
588} 877}
589 878
590int 879unsigned int
591ev_method (EV_P) 880ev_supported_backends (void)
592{ 881{
593 return method; 882 unsigned int flags = 0;
594}
595 883
596static void 884 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
597loop_init (EV_P_ int methods) 885 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
886 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
887 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
888 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
889
890 return flags;
891}
892
893unsigned int
894ev_recommended_backends (void)
598{ 895{
599 if (!method) 896 unsigned int flags = ev_supported_backends ();
897
898#ifndef __NetBSD__
899 /* kqueue is borked on everything but netbsd apparently */
900 /* it usually doesn't work correctly on anything but sockets and pipes */
901 flags &= ~EVBACKEND_KQUEUE;
902#endif
903#ifdef __APPLE__
904 // flags &= ~EVBACKEND_KQUEUE; for documentation
905 flags &= ~EVBACKEND_POLL;
906#endif
907
908 return flags;
909}
910
911unsigned int
912ev_embeddable_backends (void)
913{
914 return EVBACKEND_EPOLL
915 | EVBACKEND_KQUEUE
916 | EVBACKEND_PORT;
917}
918
919unsigned int
920ev_backend (EV_P)
921{
922 return backend;
923}
924
925unsigned int
926ev_loop_count (EV_P)
927{
928 return loop_count;
929}
930
931static void noinline
932loop_init (EV_P_ unsigned int flags)
933{
934 if (!backend)
600 { 935 {
601#if EV_USE_MONOTONIC 936#if EV_USE_MONOTONIC
602 { 937 {
603 struct timespec ts; 938 struct timespec ts;
604 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 939 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
605 have_monotonic = 1; 940 have_monotonic = 1;
606 } 941 }
607#endif 942#endif
608 943
609 rt_now = ev_time (); 944 ev_rt_now = ev_time ();
610 mn_now = get_clock (); 945 mn_now = get_clock ();
611 now_floor = mn_now; 946 now_floor = mn_now;
612 rtmn_diff = rt_now - mn_now; 947 rtmn_diff = ev_rt_now - mn_now;
613 948
614 if (methods == EVMETHOD_AUTO) 949 /* pid check not overridable via env */
615 if (!enable_secure () && getenv ("LIBEV_METHODS")) 950#ifndef _WIN32
951 if (flags & EVFLAG_FORKCHECK)
952 curpid = getpid ();
953#endif
954
955 if (!(flags & EVFLAG_NOENV)
956 && !enable_secure ()
957 && getenv ("LIBEV_FLAGS"))
616 methods = atoi (getenv ("LIBEV_METHODS")); 958 flags = atoi (getenv ("LIBEV_FLAGS"));
617 else
618 methods = EVMETHOD_ANY;
619 959
620 method = 0; 960 if (!(flags & 0x0000ffffUL))
961 flags |= ev_recommended_backends ();
962
963 backend = 0;
964 backend_fd = -1;
621#if EV_USE_WIN32 965#if EV_USE_INOTIFY
622 if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods); 966 fs_fd = -2;
967#endif
968
969#if EV_USE_PORT
970 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
623#endif 971#endif
624#if EV_USE_KQUEUE 972#if EV_USE_KQUEUE
625 if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods); 973 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
626#endif 974#endif
627#if EV_USE_EPOLL 975#if EV_USE_EPOLL
628 if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods); 976 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
629#endif 977#endif
630#if EV_USE_POLL 978#if EV_USE_POLL
631 if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods); 979 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
632#endif 980#endif
633#if EV_USE_SELECT 981#if EV_USE_SELECT
634 if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods); 982 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
635#endif 983#endif
636 }
637}
638 984
639void 985 ev_init (&sigev, sigcb);
986 ev_set_priority (&sigev, EV_MAXPRI);
987 }
988}
989
990static void noinline
640loop_destroy (EV_P) 991loop_destroy (EV_P)
641{ 992{
642 int i; 993 int i;
643 994
644#if EV_USE_WIN32 995#if EV_USE_INOTIFY
645 if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A); 996 if (fs_fd >= 0)
997 close (fs_fd);
998#endif
999
1000 if (backend_fd >= 0)
1001 close (backend_fd);
1002
1003#if EV_USE_PORT
1004 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
646#endif 1005#endif
647#if EV_USE_KQUEUE 1006#if EV_USE_KQUEUE
648 if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A); 1007 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
649#endif 1008#endif
650#if EV_USE_EPOLL 1009#if EV_USE_EPOLL
651 if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A); 1010 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
652#endif 1011#endif
653#if EV_USE_POLL 1012#if EV_USE_POLL
654 if (method == EVMETHOD_POLL ) poll_destroy (EV_A); 1013 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
655#endif 1014#endif
656#if EV_USE_SELECT 1015#if EV_USE_SELECT
657 if (method == EVMETHOD_SELECT) select_destroy (EV_A); 1016 if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
658#endif 1017#endif
659 1018
660 for (i = NUMPRI; i--; ) 1019 for (i = NUMPRI; i--; )
1020 {
661 array_free (pending, [i]); 1021 array_free (pending, [i]);
1022#if EV_IDLE_ENABLE
1023 array_free (idle, [i]);
1024#endif
1025 }
662 1026
1027 /* have to use the microsoft-never-gets-it-right macro */
663 array_free (fdchange, ); 1028 array_free (fdchange, EMPTY);
664 array_free (timer, ); 1029 array_free (timer, EMPTY);
1030#if EV_PERIODIC_ENABLE
665 array_free (periodic, ); 1031 array_free (periodic, EMPTY);
666 array_free (idle, ); 1032#endif
667 array_free (prepare, ); 1033 array_free (prepare, EMPTY);
668 array_free (check, ); 1034 array_free (check, EMPTY);
669 1035
670 method = 0; 1036 backend = 0;
671 /*TODO*/
672} 1037}
673 1038
674void 1039void inline_size infy_fork (EV_P);
1040
1041void inline_size
675loop_fork (EV_P) 1042loop_fork (EV_P)
676{ 1043{
677 /*TODO*/ 1044#if EV_USE_PORT
1045 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1046#endif
1047#if EV_USE_KQUEUE
1048 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
1049#endif
678#if EV_USE_EPOLL 1050#if EV_USE_EPOLL
679 if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A); 1051 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
680#endif 1052#endif
681#if EV_USE_KQUEUE 1053#if EV_USE_INOTIFY
682 if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A); 1054 infy_fork (EV_A);
683#endif 1055#endif
1056
1057 if (ev_is_active (&sigev))
1058 {
1059 /* default loop */
1060
1061 ev_ref (EV_A);
1062 ev_io_stop (EV_A_ &sigev);
1063 close (sigpipe [0]);
1064 close (sigpipe [1]);
1065
1066 while (pipe (sigpipe))
1067 syserr ("(libev) error creating pipe");
1068
1069 siginit (EV_A);
1070 }
1071
1072 postfork = 0;
684} 1073}
685 1074
686#if EV_MULTIPLICITY 1075#if EV_MULTIPLICITY
687struct ev_loop * 1076struct ev_loop *
688ev_loop_new (int methods) 1077ev_loop_new (unsigned int flags)
689{ 1078{
690 struct ev_loop *loop = (struct ev_loop *)calloc (1, sizeof (struct ev_loop)); 1079 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
691 1080
1081 memset (loop, 0, sizeof (struct ev_loop));
1082
692 loop_init (EV_A_ methods); 1083 loop_init (EV_A_ flags);
693 1084
694 if (ev_method (EV_A)) 1085 if (ev_backend (EV_A))
695 return loop; 1086 return loop;
696 1087
697 return 0; 1088 return 0;
698} 1089}
699 1090
700void 1091void
701ev_loop_destroy (EV_P) 1092ev_loop_destroy (EV_P)
702{ 1093{
703 loop_destroy (EV_A); 1094 loop_destroy (EV_A);
704 free (loop); 1095 ev_free (loop);
705} 1096}
706 1097
707void 1098void
708ev_loop_fork (EV_P) 1099ev_loop_fork (EV_P)
709{ 1100{
710 loop_fork (EV_A); 1101 postfork = 1;
711} 1102}
712 1103
713#endif 1104#endif
714 1105
715#if EV_MULTIPLICITY 1106#if EV_MULTIPLICITY
716struct ev_loop default_loop_struct;
717static struct ev_loop *default_loop;
718
719struct ev_loop * 1107struct ev_loop *
1108ev_default_loop_init (unsigned int flags)
720#else 1109#else
721static int default_loop;
722
723int 1110int
1111ev_default_loop (unsigned int flags)
724#endif 1112#endif
725ev_default_loop (int methods)
726{ 1113{
727 if (sigpipe [0] == sigpipe [1]) 1114 if (sigpipe [0] == sigpipe [1])
728 if (pipe (sigpipe)) 1115 if (pipe (sigpipe))
729 return 0; 1116 return 0;
730 1117
731 if (!default_loop) 1118 if (!ev_default_loop_ptr)
732 { 1119 {
733#if EV_MULTIPLICITY 1120#if EV_MULTIPLICITY
734 struct ev_loop *loop = default_loop = &default_loop_struct; 1121 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
735#else 1122#else
736 default_loop = 1; 1123 ev_default_loop_ptr = 1;
737#endif 1124#endif
738 1125
739 loop_init (EV_A_ methods); 1126 loop_init (EV_A_ flags);
740 1127
741 if (ev_method (EV_A)) 1128 if (ev_backend (EV_A))
742 { 1129 {
743 ev_watcher_init (&sigev, sigcb);
744 ev_set_priority (&sigev, EV_MAXPRI);
745 siginit (EV_A); 1130 siginit (EV_A);
746 1131
747#ifndef WIN32 1132#ifndef _WIN32
748 ev_signal_init (&childev, childcb, SIGCHLD); 1133 ev_signal_init (&childev, childcb, SIGCHLD);
749 ev_set_priority (&childev, EV_MAXPRI); 1134 ev_set_priority (&childev, EV_MAXPRI);
750 ev_signal_start (EV_A_ &childev); 1135 ev_signal_start (EV_A_ &childev);
751 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1136 ev_unref (EV_A); /* child watcher should not keep loop alive */
752#endif 1137#endif
753 } 1138 }
754 else 1139 else
755 default_loop = 0; 1140 ev_default_loop_ptr = 0;
756 } 1141 }
757 1142
758 return default_loop; 1143 return ev_default_loop_ptr;
759} 1144}
760 1145
761void 1146void
762ev_default_destroy (void) 1147ev_default_destroy (void)
763{ 1148{
764#if EV_MULTIPLICITY 1149#if EV_MULTIPLICITY
765 struct ev_loop *loop = default_loop; 1150 struct ev_loop *loop = ev_default_loop_ptr;
766#endif 1151#endif
767 1152
1153#ifndef _WIN32
768 ev_ref (EV_A); /* child watcher */ 1154 ev_ref (EV_A); /* child watcher */
769 ev_signal_stop (EV_A_ &childev); 1155 ev_signal_stop (EV_A_ &childev);
1156#endif
770 1157
771 ev_ref (EV_A); /* signal watcher */ 1158 ev_ref (EV_A); /* signal watcher */
772 ev_io_stop (EV_A_ &sigev); 1159 ev_io_stop (EV_A_ &sigev);
773 1160
774 close (sigpipe [0]); sigpipe [0] = 0; 1161 close (sigpipe [0]); sigpipe [0] = 0;
… …
779 1166
780void 1167void
781ev_default_fork (void) 1168ev_default_fork (void)
782{ 1169{
783#if EV_MULTIPLICITY 1170#if EV_MULTIPLICITY
784 struct ev_loop *loop = default_loop; 1171 struct ev_loop *loop = ev_default_loop_ptr;
785#endif 1172#endif
786 1173
787 loop_fork (EV_A); 1174 if (backend)
788 1175 postfork = 1;
789 ev_io_stop (EV_A_ &sigev);
790 close (sigpipe [0]);
791 close (sigpipe [1]);
792 pipe (sigpipe);
793
794 ev_ref (EV_A); /* signal watcher */
795 siginit (EV_A);
796} 1176}
797 1177
798/*****************************************************************************/ 1178/*****************************************************************************/
799 1179
800static void 1180void
1181ev_invoke (EV_P_ void *w, int revents)
1182{
1183 EV_CB_INVOKE ((W)w, revents);
1184}
1185
1186void inline_speed
801call_pending (EV_P) 1187call_pending (EV_P)
802{ 1188{
803 int pri; 1189 int pri;
804 1190
805 for (pri = NUMPRI; pri--; ) 1191 for (pri = NUMPRI; pri--; )
806 while (pendingcnt [pri]) 1192 while (pendingcnt [pri])
807 { 1193 {
808 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 1194 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
809 1195
810 if (p->w) 1196 if (expect_true (p->w))
811 { 1197 {
1198 /*assert (("non-pending watcher on pending list", p->w->pending));*/
1199
812 p->w->pending = 0; 1200 p->w->pending = 0;
813 1201 EV_CB_INVOKE (p->w, p->events);
814 ((void (*)(EV_P_ W, int))p->w->cb) (EV_A_ p->w, p->events);
815 } 1202 }
816 } 1203 }
817} 1204}
818 1205
819static void 1206void inline_size
820timers_reify (EV_P) 1207timers_reify (EV_P)
821{ 1208{
822 while (timercnt && ((WT)timers [0])->at <= mn_now) 1209 while (timercnt && ((WT)timers [0])->at <= mn_now)
823 { 1210 {
824 struct ev_timer *w = timers [0]; 1211 ev_timer *w = timers [0];
825 1212
826 assert (("inactive timer on timer heap detected", ev_is_active (w))); 1213 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
827 1214
828 /* first reschedule or stop timer */ 1215 /* first reschedule or stop timer */
829 if (w->repeat) 1216 if (w->repeat)
830 { 1217 {
831 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 1218 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1219
832 ((WT)w)->at = mn_now + w->repeat; 1220 ((WT)w)->at += w->repeat;
1221 if (((WT)w)->at < mn_now)
1222 ((WT)w)->at = mn_now;
1223
833 downheap ((WT *)timers, timercnt, 0); 1224 downheap ((WT *)timers, timercnt, 0);
834 } 1225 }
835 else 1226 else
836 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ 1227 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
837 1228
838 event (EV_A_ (W)w, EV_TIMEOUT); 1229 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
839 } 1230 }
840} 1231}
841 1232
842static void 1233#if EV_PERIODIC_ENABLE
1234void inline_size
843periodics_reify (EV_P) 1235periodics_reify (EV_P)
844{ 1236{
845 while (periodiccnt && ((WT)periodics [0])->at <= rt_now) 1237 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
846 { 1238 {
847 struct ev_periodic *w = periodics [0]; 1239 ev_periodic *w = periodics [0];
848 1240
849 assert (("inactive timer on periodic heap detected", ev_is_active (w))); 1241 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
850 1242
851 /* first reschedule or stop timer */ 1243 /* first reschedule or stop timer */
852 if (w->interval) 1244 if (w->reschedule_cb)
853 { 1245 {
1246 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1247 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1248 downheap ((WT *)periodics, periodiccnt, 0);
1249 }
1250 else if (w->interval)
1251 {
854 ((WT)w)->at += floor ((rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval; 1252 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1253 if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
855 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));
856 downheap ((WT *)periodics, periodiccnt, 0); 1255 downheap ((WT *)periodics, periodiccnt, 0);
857 } 1256 }
858 else 1257 else
859 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 1258 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
860 1259
861 event (EV_A_ (W)w, EV_PERIODIC); 1260 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
862 } 1261 }
863} 1262}
864 1263
865static void 1264static void noinline
866periodics_reschedule (EV_P) 1265periodics_reschedule (EV_P)
867{ 1266{
868 int i; 1267 int i;
869 1268
870 /* adjust periodics after time jump */ 1269 /* adjust periodics after time jump */
871 for (i = 0; i < periodiccnt; ++i) 1270 for (i = 0; i < periodiccnt; ++i)
872 { 1271 {
873 struct ev_periodic *w = periodics [i]; 1272 ev_periodic *w = periodics [i];
874 1273
1274 if (w->reschedule_cb)
1275 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
875 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--; )
876 { 1295 {
877 ev_tstamp diff = ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval; 1296 if (pendingcnt [pri])
1297 break;
878 1298
879 if (fabs (diff) >= 1e-4) 1299 if (idlecnt [pri])
880 { 1300 {
881 ev_periodic_stop (EV_A_ w); 1301 queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
882 ev_periodic_start (EV_A_ w); 1302 break;
883
884 i = 0; /* restart loop, inefficient, but time jumps should be rare */
885 } 1303 }
886 } 1304 }
887 } 1305 }
888} 1306}
1307#endif
889 1308
890inline int 1309void inline_speed
891time_update_monotonic (EV_P) 1310time_update (EV_P_ ev_tstamp max_block)
892{
893 mn_now = get_clock ();
894
895 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
896 {
897 rt_now = rtmn_diff + mn_now;
898 return 0;
899 }
900 else
901 {
902 now_floor = mn_now;
903 rt_now = ev_time ();
904 return 1;
905 }
906}
907
908static void
909time_update (EV_P)
910{ 1311{
911 int i; 1312 int i;
912 1313
913#if EV_USE_MONOTONIC 1314#if EV_USE_MONOTONIC
914 if (expect_true (have_monotonic)) 1315 if (expect_true (have_monotonic))
915 { 1316 {
916 if (time_update_monotonic (EV_A)) 1317 ev_tstamp odiff = rtmn_diff;
1318
1319 mn_now = get_clock ();
1320
1321 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
1322 /* interpolate in the meantime */
1323 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
917 { 1324 {
918 ev_tstamp odiff = rtmn_diff; 1325 ev_rt_now = rtmn_diff + mn_now;
1326 return;
1327 }
919 1328
1329 now_floor = mn_now;
1330 ev_rt_now = ev_time ();
1331
920 for (i = 4; --i; ) /* loop a few times, before making important decisions */ 1332 /* loop a few times, before making important decisions.
1333 * on the choice of "4": one iteration isn't enough,
1334 * in case we get preempted during the calls to
1335 * ev_time and get_clock. a second call is almost guaranteed
1336 * to succeed in that case, though. and looping a few more times
1337 * doesn't hurt either as we only do this on time-jumps or
1338 * in the unlikely event of having been preempted here.
1339 */
1340 for (i = 4; --i; )
921 { 1341 {
922 rtmn_diff = rt_now - mn_now; 1342 rtmn_diff = ev_rt_now - mn_now;
923 1343
924 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) 1344 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
925 return; /* all is well */ 1345 return; /* all is well */
926 1346
927 rt_now = ev_time (); 1347 ev_rt_now = ev_time ();
928 mn_now = get_clock (); 1348 mn_now = get_clock ();
929 now_floor = mn_now; 1349 now_floor = mn_now;
930 } 1350 }
931 1351
1352# if EV_PERIODIC_ENABLE
1353 periodics_reschedule (EV_A);
1354# endif
1355 /* no timer adjustment, as the monotonic clock doesn't jump */
1356 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1357 }
1358 else
1359#endif
1360 {
1361 ev_rt_now = ev_time ();
1362
1363 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1364 {
1365#if EV_PERIODIC_ENABLE
932 periodics_reschedule (EV_A); 1366 periodics_reschedule (EV_A);
933 /* no timer adjustment, as the monotonic clock doesn't jump */ 1367#endif
934 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */ 1368 /* adjust timers. this is easy, as the offset is the same for all of them */
1369 for (i = 0; i < timercnt; ++i)
1370 ((WT)timers [i])->at += ev_rt_now - mn_now;
935 } 1371 }
936 }
937 else
938#endif
939 {
940 rt_now = ev_time ();
941 1372
942 if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
943 {
944 periodics_reschedule (EV_A);
945
946 /* adjust timers. this is easy, as the offset is the same for all */
947 for (i = 0; i < timercnt; ++i)
948 ((WT)timers [i])->at += rt_now - mn_now;
949 }
950
951 mn_now = rt_now; 1373 mn_now = ev_rt_now;
952 } 1374 }
953} 1375}
954 1376
955void 1377void
956ev_ref (EV_P) 1378ev_ref (EV_P)
… …
967static int loop_done; 1389static int loop_done;
968 1390
969void 1391void
970ev_loop (EV_P_ int flags) 1392ev_loop (EV_P_ int flags)
971{ 1393{
972 double block;
973 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0; 1394 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
1395 ? EVUNLOOP_ONE
1396 : EVUNLOOP_CANCEL;
1397
1398 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
974 1399
975 do 1400 do
976 { 1401 {
1402#ifndef _WIN32
1403 if (expect_false (curpid)) /* penalise the forking check even more */
1404 if (expect_false (getpid () != curpid))
1405 {
1406 curpid = getpid ();
1407 postfork = 1;
1408 }
1409#endif
1410
1411#if EV_FORK_ENABLE
1412 /* we might have forked, so queue fork handlers */
1413 if (expect_false (postfork))
1414 if (forkcnt)
1415 {
1416 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1417 call_pending (EV_A);
1418 }
1419#endif
1420
977 /* queue check watchers (and execute them) */ 1421 /* queue prepare watchers (and execute them) */
978 if (expect_false (preparecnt)) 1422 if (expect_false (preparecnt))
979 { 1423 {
980 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 1424 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
981 call_pending (EV_A); 1425 call_pending (EV_A);
982 } 1426 }
983 1427
1428 if (expect_false (!activecnt))
1429 break;
1430
1431 /* we might have forked, so reify kernel state if necessary */
1432 if (expect_false (postfork))
1433 loop_fork (EV_A);
1434
984 /* update fd-related kernel structures */ 1435 /* update fd-related kernel structures */
985 fd_reify (EV_A); 1436 fd_reify (EV_A);
986 1437
987 /* calculate blocking time */ 1438 /* calculate blocking time */
1439 {
1440 ev_tstamp block;
988 1441
989 /* we only need this for !monotonic clockor timers, but as we basically 1442 if (expect_false (flags & EVLOOP_NONBLOCK || idleall || !activecnt))
990 always have timers, we just calculate it always */ 1443 block = 0.; /* do not block at all */
991#if EV_USE_MONOTONIC
992 if (expect_true (have_monotonic))
993 time_update_monotonic (EV_A);
994 else 1444 else
995#endif
996 { 1445 {
997 rt_now = ev_time (); 1446 /* update time to cancel out callback processing overhead */
998 mn_now = rt_now; 1447 time_update (EV_A_ 1e100);
999 }
1000 1448
1001 if (flags & EVLOOP_NONBLOCK || idlecnt)
1002 block = 0.;
1003 else
1004 {
1005 block = MAX_BLOCKTIME; 1449 block = MAX_BLOCKTIME;
1006 1450
1007 if (timercnt) 1451 if (timercnt)
1008 { 1452 {
1009 ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge; 1453 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1010 if (block > to) block = to; 1454 if (block > to) block = to;
1011 } 1455 }
1012 1456
1457#if EV_PERIODIC_ENABLE
1013 if (periodiccnt) 1458 if (periodiccnt)
1014 { 1459 {
1015 ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge; 1460 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1016 if (block > to) block = to; 1461 if (block > to) block = to;
1017 } 1462 }
1463#endif
1018 1464
1019 if (block < 0.) block = 0.; 1465 if (expect_false (block < 0.)) block = 0.;
1020 } 1466 }
1021 1467
1468 ++loop_count;
1022 method_poll (EV_A_ block); 1469 backend_poll (EV_A_ block);
1023 1470
1024 /* update rt_now, do magic */ 1471 /* update ev_rt_now, do magic */
1025 time_update (EV_A); 1472 time_update (EV_A_ block);
1473 }
1026 1474
1027 /* queue pending timers and reschedule them */ 1475 /* queue pending timers and reschedule them */
1028 timers_reify (EV_A); /* relative timers called last */ 1476 timers_reify (EV_A); /* relative timers called last */
1477#if EV_PERIODIC_ENABLE
1029 periodics_reify (EV_A); /* absolute timers called first */ 1478 periodics_reify (EV_A); /* absolute timers called first */
1479#endif
1030 1480
1481#if EV_IDLE_ENABLE
1031 /* queue idle watchers unless io or timers are pending */ 1482 /* queue idle watchers unless other events are pending */
1032 if (!pendingcnt) 1483 idle_reify (EV_A);
1033 queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); 1484#endif
1034 1485
1035 /* queue check watchers, to be executed first */ 1486 /* queue check watchers, to be executed first */
1036 if (checkcnt) 1487 if (expect_false (checkcnt))
1037 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 1488 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1038 1489
1039 call_pending (EV_A); 1490 call_pending (EV_A);
1491
1040 } 1492 }
1041 while (activecnt && !loop_done); 1493 while (expect_true (activecnt && !loop_done));
1042 1494
1043 if (loop_done != 2) 1495 if (loop_done == EVUNLOOP_ONE)
1044 loop_done = 0; 1496 loop_done = EVUNLOOP_CANCEL;
1045} 1497}
1046 1498
1047void 1499void
1048ev_unloop (EV_P_ int how) 1500ev_unloop (EV_P_ int how)
1049{ 1501{
1050 loop_done = how; 1502 loop_done = how;
1051} 1503}
1052 1504
1053/*****************************************************************************/ 1505/*****************************************************************************/
1054 1506
1055inline void 1507void inline_size
1056wlist_add (WL *head, WL elem) 1508wlist_add (WL *head, WL elem)
1057{ 1509{
1058 elem->next = *head; 1510 elem->next = *head;
1059 *head = elem; 1511 *head = elem;
1060} 1512}
1061 1513
1062inline void 1514void inline_size
1063wlist_del (WL *head, WL elem) 1515wlist_del (WL *head, WL elem)
1064{ 1516{
1065 while (*head) 1517 while (*head)
1066 { 1518 {
1067 if (*head == elem) 1519 if (*head == elem)
… …
1072 1524
1073 head = &(*head)->next; 1525 head = &(*head)->next;
1074 } 1526 }
1075} 1527}
1076 1528
1077inline void 1529void inline_speed
1078ev_clear_pending (EV_P_ W w) 1530clear_pending (EV_P_ W w)
1079{ 1531{
1080 if (w->pending) 1532 if (w->pending)
1081 { 1533 {
1082 pendings [ABSPRI (w)][w->pending - 1].w = 0; 1534 pendings [ABSPRI (w)][w->pending - 1].w = 0;
1083 w->pending = 0; 1535 w->pending = 0;
1084 } 1536 }
1085} 1537}
1086 1538
1087inline void 1539int
1540ev_clear_pending (EV_P_ void *w)
1541{
1542 W w_ = (W)w;
1543 int pending = w_->pending;
1544
1545 if (expect_true (pending))
1546 {
1547 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
1548 w_->pending = 0;
1549 p->w = 0;
1550 return p->events;
1551 }
1552 else
1553 return 0;
1554}
1555
1556void inline_size
1557pri_adjust (EV_P_ W w)
1558{
1559 int pri = w->priority;
1560 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1561 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1562 w->priority = pri;
1563}
1564
1565void inline_speed
1088ev_start (EV_P_ W w, int active) 1566ev_start (EV_P_ W w, int active)
1089{ 1567{
1090 if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; 1568 pri_adjust (EV_A_ w);
1091 if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1092
1093 w->active = active; 1569 w->active = active;
1094 ev_ref (EV_A); 1570 ev_ref (EV_A);
1095} 1571}
1096 1572
1097inline void 1573void inline_size
1098ev_stop (EV_P_ W w) 1574ev_stop (EV_P_ W w)
1099{ 1575{
1100 ev_unref (EV_A); 1576 ev_unref (EV_A);
1101 w->active = 0; 1577 w->active = 0;
1102} 1578}
1103 1579
1104/*****************************************************************************/ 1580/*****************************************************************************/
1105 1581
1106void 1582void noinline
1107ev_io_start (EV_P_ struct ev_io *w) 1583ev_io_start (EV_P_ ev_io *w)
1108{ 1584{
1109 int fd = w->fd; 1585 int fd = w->fd;
1110 1586
1111 if (ev_is_active (w)) 1587 if (expect_false (ev_is_active (w)))
1112 return; 1588 return;
1113 1589
1114 assert (("ev_io_start called with negative fd", fd >= 0)); 1590 assert (("ev_io_start called with negative fd", fd >= 0));
1115 1591
1116 ev_start (EV_A_ (W)w, 1); 1592 ev_start (EV_A_ (W)w, 1);
1117 array_needsize (anfds, anfdmax, fd + 1, anfds_init); 1593 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1118 wlist_add ((WL *)&anfds[fd].head, (WL)w); 1594 wlist_add ((WL *)&anfds[fd].head, (WL)w);
1119 1595
1120 fd_change (EV_A_ fd); 1596 fd_change (EV_A_ fd);
1121} 1597}
1122 1598
1123void 1599void noinline
1124ev_io_stop (EV_P_ struct ev_io *w) 1600ev_io_stop (EV_P_ ev_io *w)
1125{ 1601{
1126 ev_clear_pending (EV_A_ (W)w); 1602 clear_pending (EV_A_ (W)w);
1127 if (!ev_is_active (w)) 1603 if (expect_false (!ev_is_active (w)))
1128 return; 1604 return;
1605
1606 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1129 1607
1130 wlist_del ((WL *)&anfds[w->fd].head, (WL)w); 1608 wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
1131 ev_stop (EV_A_ (W)w); 1609 ev_stop (EV_A_ (W)w);
1132 1610
1133 fd_change (EV_A_ w->fd); 1611 fd_change (EV_A_ w->fd);
1134} 1612}
1135 1613
1136void 1614void noinline
1137ev_timer_start (EV_P_ struct ev_timer *w) 1615ev_timer_start (EV_P_ ev_timer *w)
1138{ 1616{
1139 if (ev_is_active (w)) 1617 if (expect_false (ev_is_active (w)))
1140 return; 1618 return;
1141 1619
1142 ((WT)w)->at += mn_now; 1620 ((WT)w)->at += mn_now;
1143 1621
1144 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 1622 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1145 1623
1146 ev_start (EV_A_ (W)w, ++timercnt); 1624 ev_start (EV_A_ (W)w, ++timercnt);
1147 array_needsize (timers, timermax, timercnt, ); 1625 array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);
1148 timers [timercnt - 1] = w; 1626 timers [timercnt - 1] = w;
1149 upheap ((WT *)timers, timercnt - 1); 1627 upheap ((WT *)timers, timercnt - 1);
1150 1628
1629 /*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
1630}
1631
1632void noinline
1633ev_timer_stop (EV_P_ ev_timer *w)
1634{
1635 clear_pending (EV_A_ (W)w);
1636 if (expect_false (!ev_is_active (w)))
1637 return;
1638
1151 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 1639 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1152}
1153 1640
1154void 1641 {
1155ev_timer_stop (EV_P_ struct ev_timer *w) 1642 int active = ((W)w)->active;
1156{
1157 ev_clear_pending (EV_A_ (W)w);
1158 if (!ev_is_active (w))
1159 return;
1160 1643
1161 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 1644 if (expect_true (--active < --timercnt))
1162
1163 if (((W)w)->active < timercnt--)
1164 { 1645 {
1165 timers [((W)w)->active - 1] = timers [timercnt]; 1646 timers [active] = timers [timercnt];
1166 downheap ((WT *)timers, timercnt, ((W)w)->active - 1); 1647 adjustheap ((WT *)timers, timercnt, active);
1167 } 1648 }
1649 }
1168 1650
1169 ((WT)w)->at = w->repeat; 1651 ((WT)w)->at -= mn_now;
1170 1652
1171 ev_stop (EV_A_ (W)w); 1653 ev_stop (EV_A_ (W)w);
1172} 1654}
1173 1655
1174void 1656void noinline
1175ev_timer_again (EV_P_ struct ev_timer *w) 1657ev_timer_again (EV_P_ ev_timer *w)
1176{ 1658{
1177 if (ev_is_active (w)) 1659 if (ev_is_active (w))
1178 { 1660 {
1179 if (w->repeat) 1661 if (w->repeat)
1180 { 1662 {
1181 ((WT)w)->at = mn_now + w->repeat; 1663 ((WT)w)->at = mn_now + w->repeat;
1182 downheap ((WT *)timers, timercnt, ((W)w)->active - 1); 1664 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1183 } 1665 }
1184 else 1666 else
1185 ev_timer_stop (EV_A_ w); 1667 ev_timer_stop (EV_A_ w);
1186 } 1668 }
1187 else if (w->repeat) 1669 else if (w->repeat)
1670 {
1671 w->at = w->repeat;
1188 ev_timer_start (EV_A_ w); 1672 ev_timer_start (EV_A_ w);
1673 }
1189} 1674}
1190 1675
1191void 1676#if EV_PERIODIC_ENABLE
1677void noinline
1192ev_periodic_start (EV_P_ struct ev_periodic *w) 1678ev_periodic_start (EV_P_ ev_periodic *w)
1193{ 1679{
1194 if (ev_is_active (w)) 1680 if (expect_false (ev_is_active (w)))
1195 return; 1681 return;
1196 1682
1683 if (w->reschedule_cb)
1684 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1685 else if (w->interval)
1686 {
1197 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 1687 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1198
1199 /* this formula differs from the one in periodic_reify because we do not always round up */ 1688 /* this formula differs from the one in periodic_reify because we do not always round up */
1200 if (w->interval)
1201 ((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval; 1689 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1690 }
1691 else
1692 ((WT)w)->at = w->offset;
1202 1693
1203 ev_start (EV_A_ (W)w, ++periodiccnt); 1694 ev_start (EV_A_ (W)w, ++periodiccnt);
1204 array_needsize (periodics, periodicmax, periodiccnt, ); 1695 array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1205 periodics [periodiccnt - 1] = w; 1696 periodics [periodiccnt - 1] = w;
1206 upheap ((WT *)periodics, periodiccnt - 1); 1697 upheap ((WT *)periodics, periodiccnt - 1);
1207 1698
1699 /*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
1700}
1701
1702void noinline
1703ev_periodic_stop (EV_P_ ev_periodic *w)
1704{
1705 clear_pending (EV_A_ (W)w);
1706 if (expect_false (!ev_is_active (w)))
1707 return;
1708
1208 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1709 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1209}
1210 1710
1211void 1711 {
1212ev_periodic_stop (EV_P_ struct ev_periodic *w) 1712 int active = ((W)w)->active;
1213{
1214 ev_clear_pending (EV_A_ (W)w);
1215 if (!ev_is_active (w))
1216 return;
1217 1713
1218 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1714 if (expect_true (--active < --periodiccnt))
1219
1220 if (((W)w)->active < periodiccnt--)
1221 { 1715 {
1222 periodics [((W)w)->active - 1] = periodics [periodiccnt]; 1716 periodics [active] = periodics [periodiccnt];
1223 downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1); 1717 adjustheap ((WT *)periodics, periodiccnt, active);
1224 } 1718 }
1719 }
1225 1720
1226 ev_stop (EV_A_ (W)w); 1721 ev_stop (EV_A_ (W)w);
1227} 1722}
1228 1723
1229void 1724void noinline
1230ev_idle_start (EV_P_ struct ev_idle *w) 1725ev_periodic_again (EV_P_ ev_periodic *w)
1231{ 1726{
1232 if (ev_is_active (w)) 1727 /* TODO: use adjustheap and recalculation */
1233 return;
1234
1235 ev_start (EV_A_ (W)w, ++idlecnt);
1236 array_needsize (idles, idlemax, idlecnt, );
1237 idles [idlecnt - 1] = w;
1238}
1239
1240void
1241ev_idle_stop (EV_P_ struct ev_idle *w)
1242{
1243 ev_clear_pending (EV_A_ (W)w);
1244 if (ev_is_active (w))
1245 return;
1246
1247 idles [((W)w)->active - 1] = idles [--idlecnt];
1248 ev_stop (EV_A_ (W)w); 1728 ev_periodic_stop (EV_A_ w);
1729 ev_periodic_start (EV_A_ w);
1249} 1730}
1250 1731#endif
1251void
1252ev_prepare_start (EV_P_ struct ev_prepare *w)
1253{
1254 if (ev_is_active (w))
1255 return;
1256
1257 ev_start (EV_A_ (W)w, ++preparecnt);
1258 array_needsize (prepares, preparemax, preparecnt, );
1259 prepares [preparecnt - 1] = w;
1260}
1261
1262void
1263ev_prepare_stop (EV_P_ struct ev_prepare *w)
1264{
1265 ev_clear_pending (EV_A_ (W)w);
1266 if (ev_is_active (w))
1267 return;
1268
1269 prepares [((W)w)->active - 1] = prepares [--preparecnt];
1270 ev_stop (EV_A_ (W)w);
1271}
1272
1273void
1274ev_check_start (EV_P_ struct ev_check *w)
1275{
1276 if (ev_is_active (w))
1277 return;
1278
1279 ev_start (EV_A_ (W)w, ++checkcnt);
1280 array_needsize (checks, checkmax, checkcnt, );
1281 checks [checkcnt - 1] = w;
1282}
1283
1284void
1285ev_check_stop (EV_P_ struct ev_check *w)
1286{
1287 ev_clear_pending (EV_A_ (W)w);
1288 if (ev_is_active (w))
1289 return;
1290
1291 checks [((W)w)->active - 1] = checks [--checkcnt];
1292 ev_stop (EV_A_ (W)w);
1293}
1294 1732
1295#ifndef SA_RESTART 1733#ifndef SA_RESTART
1296# define SA_RESTART 0 1734# define SA_RESTART 0
1297#endif 1735#endif
1298 1736
1299void 1737void noinline
1300ev_signal_start (EV_P_ struct ev_signal *w) 1738ev_signal_start (EV_P_ ev_signal *w)
1301{ 1739{
1302#if EV_MULTIPLICITY 1740#if EV_MULTIPLICITY
1303 assert (("signal watchers are only supported in the default loop", loop == default_loop)); 1741 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1304#endif 1742#endif
1305 if (ev_is_active (w)) 1743 if (expect_false (ev_is_active (w)))
1306 return; 1744 return;
1307 1745
1308 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 1746 assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1309 1747
1310 ev_start (EV_A_ (W)w, 1); 1748 ev_start (EV_A_ (W)w, 1);
1311 array_needsize (signals, signalmax, w->signum, signals_init); 1749 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1312 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); 1750 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1313 1751
1314 if (!((WL)w)->next) 1752 if (!((WL)w)->next)
1315 { 1753 {
1754#if _WIN32
1755 signal (w->signum, sighandler);
1756#else
1316 struct sigaction sa; 1757 struct sigaction sa;
1317 sa.sa_handler = sighandler; 1758 sa.sa_handler = sighandler;
1318 sigfillset (&sa.sa_mask); 1759 sigfillset (&sa.sa_mask);
1319 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 1760 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1320 sigaction (w->signum, &sa, 0); 1761 sigaction (w->signum, &sa, 0);
1762#endif
1321 } 1763 }
1322} 1764}
1323 1765
1324void 1766void noinline
1325ev_signal_stop (EV_P_ struct ev_signal *w) 1767ev_signal_stop (EV_P_ ev_signal *w)
1326{ 1768{
1327 ev_clear_pending (EV_A_ (W)w); 1769 clear_pending (EV_A_ (W)w);
1328 if (!ev_is_active (w)) 1770 if (expect_false (!ev_is_active (w)))
1329 return; 1771 return;
1330 1772
1331 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); 1773 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1332 ev_stop (EV_A_ (W)w); 1774 ev_stop (EV_A_ (W)w);
1333 1775
1334 if (!signals [w->signum - 1].head) 1776 if (!signals [w->signum - 1].head)
1335 signal (w->signum, SIG_DFL); 1777 signal (w->signum, SIG_DFL);
1336} 1778}
1337 1779
1338void 1780void
1339ev_child_start (EV_P_ struct ev_child *w) 1781ev_child_start (EV_P_ ev_child *w)
1340{ 1782{
1341#if EV_MULTIPLICITY 1783#if EV_MULTIPLICITY
1342 assert (("child watchers are only supported in the default loop", loop == default_loop)); 1784 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1343#endif 1785#endif
1344 if (ev_is_active (w)) 1786 if (expect_false (ev_is_active (w)))
1345 return; 1787 return;
1346 1788
1347 ev_start (EV_A_ (W)w, 1); 1789 ev_start (EV_A_ (W)w, 1);
1348 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1790 wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1349} 1791}
1350 1792
1351void 1793void
1352ev_child_stop (EV_P_ struct ev_child *w) 1794ev_child_stop (EV_P_ ev_child *w)
1353{ 1795{
1354 ev_clear_pending (EV_A_ (W)w); 1796 clear_pending (EV_A_ (W)w);
1355 if (ev_is_active (w)) 1797 if (expect_false (!ev_is_active (w)))
1356 return; 1798 return;
1357 1799
1358 wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1800 wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1359 ev_stop (EV_A_ (W)w); 1801 ev_stop (EV_A_ (W)w);
1360} 1802}
1361 1803
1804#if EV_STAT_ENABLE
1805
1806# ifdef _WIN32
1807# undef lstat
1808# define lstat(a,b) _stati64 (a,b)
1809# endif
1810
1811#define DEF_STAT_INTERVAL 5.0074891
1812#define MIN_STAT_INTERVAL 0.1074891
1813
1814static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
1815
1816#if EV_USE_INOTIFY
1817# define EV_INOTIFY_BUFSIZE 8192
1818
1819static void noinline
1820infy_add (EV_P_ ev_stat *w)
1821{
1822 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);
1823
1824 if (w->wd < 0)
1825 {
1826 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
1827
1828 /* monitor some parent directory for speedup hints */
1829 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
1830 {
1831 char path [4096];
1832 strcpy (path, w->path);
1833
1834 do
1835 {
1836 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
1837 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
1838
1839 char *pend = strrchr (path, '/');
1840
1841 if (!pend)
1842 break; /* whoops, no '/', complain to your admin */
1843
1844 *pend = 0;
1845 w->wd = inotify_add_watch (fs_fd, path, mask);
1846 }
1847 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
1848 }
1849 }
1850 else
1851 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
1852
1853 if (w->wd >= 0)
1854 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
1855}
1856
1857static void noinline
1858infy_del (EV_P_ ev_stat *w)
1859{
1860 int slot;
1861 int wd = w->wd;
1862
1863 if (wd < 0)
1864 return;
1865
1866 w->wd = -2;
1867 slot = wd & (EV_INOTIFY_HASHSIZE - 1);
1868 wlist_del (&fs_hash [slot].head, (WL)w);
1869
1870 /* remove this watcher, if others are watching it, they will rearm */
1871 inotify_rm_watch (fs_fd, wd);
1872}
1873
1874static void noinline
1875infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
1876{
1877 if (slot < 0)
1878 /* overflow, need to check for all hahs slots */
1879 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
1880 infy_wd (EV_A_ slot, wd, ev);
1881 else
1882 {
1883 WL w_;
1884
1885 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
1886 {
1887 ev_stat *w = (ev_stat *)w_;
1888 w_ = w_->next; /* lets us remove this watcher and all before it */
1889
1890 if (w->wd == wd || wd == -1)
1891 {
1892 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
1893 {
1894 w->wd = -1;
1895 infy_add (EV_A_ w); /* re-add, no matter what */
1896 }
1897
1898 stat_timer_cb (EV_A_ &w->timer, 0);
1899 }
1900 }
1901 }
1902}
1903
1904static void
1905infy_cb (EV_P_ ev_io *w, int revents)
1906{
1907 char buf [EV_INOTIFY_BUFSIZE];
1908 struct inotify_event *ev = (struct inotify_event *)buf;
1909 int ofs;
1910 int len = read (fs_fd, buf, sizeof (buf));
1911
1912 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
1913 infy_wd (EV_A_ ev->wd, ev->wd, ev);
1914}
1915
1916void inline_size
1917infy_init (EV_P)
1918{
1919 if (fs_fd != -2)
1920 return;
1921
1922 fs_fd = inotify_init ();
1923
1924 if (fs_fd >= 0)
1925 {
1926 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
1927 ev_set_priority (&fs_w, EV_MAXPRI);
1928 ev_io_start (EV_A_ &fs_w);
1929 }
1930}
1931
1932void inline_size
1933infy_fork (EV_P)
1934{
1935 int slot;
1936
1937 if (fs_fd < 0)
1938 return;
1939
1940 close (fs_fd);
1941 fs_fd = inotify_init ();
1942
1943 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
1944 {
1945 WL w_ = fs_hash [slot].head;
1946 fs_hash [slot].head = 0;
1947
1948 while (w_)
1949 {
1950 ev_stat *w = (ev_stat *)w_;
1951 w_ = w_->next; /* lets us add this watcher */
1952
1953 w->wd = -1;
1954
1955 if (fs_fd >= 0)
1956 infy_add (EV_A_ w); /* re-add, no matter what */
1957 else
1958 ev_timer_start (EV_A_ &w->timer);
1959 }
1960
1961 }
1962}
1963
1964#endif
1965
1966void
1967ev_stat_stat (EV_P_ ev_stat *w)
1968{
1969 if (lstat (w->path, &w->attr) < 0)
1970 w->attr.st_nlink = 0;
1971 else if (!w->attr.st_nlink)
1972 w->attr.st_nlink = 1;
1973}
1974
1975static void noinline
1976stat_timer_cb (EV_P_ ev_timer *w_, int revents)
1977{
1978 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
1979
1980 /* we copy this here each the time so that */
1981 /* prev has the old value when the callback gets invoked */
1982 w->prev = w->attr;
1983 ev_stat_stat (EV_A_ w);
1984
1985 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
1986 if (
1987 w->prev.st_dev != w->attr.st_dev
1988 || w->prev.st_ino != w->attr.st_ino
1989 || w->prev.st_mode != w->attr.st_mode
1990 || w->prev.st_nlink != w->attr.st_nlink
1991 || w->prev.st_uid != w->attr.st_uid
1992 || w->prev.st_gid != w->attr.st_gid
1993 || w->prev.st_rdev != w->attr.st_rdev
1994 || w->prev.st_size != w->attr.st_size
1995 || w->prev.st_atime != w->attr.st_atime
1996 || w->prev.st_mtime != w->attr.st_mtime
1997 || w->prev.st_ctime != w->attr.st_ctime
1998 ) {
1999 #if EV_USE_INOTIFY
2000 infy_del (EV_A_ w);
2001 infy_add (EV_A_ w);
2002 ev_stat_stat (EV_A_ w); /* avoid race... */
2003 #endif
2004
2005 ev_feed_event (EV_A_ w, EV_STAT);
2006 }
2007}
2008
2009void
2010ev_stat_start (EV_P_ ev_stat *w)
2011{
2012 if (expect_false (ev_is_active (w)))
2013 return;
2014
2015 /* since we use memcmp, we need to clear any padding data etc. */
2016 memset (&w->prev, 0, sizeof (ev_statdata));
2017 memset (&w->attr, 0, sizeof (ev_statdata));
2018
2019 ev_stat_stat (EV_A_ w);
2020
2021 if (w->interval < MIN_STAT_INTERVAL)
2022 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2023
2024 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
2025 ev_set_priority (&w->timer, ev_priority (w));
2026
2027#if EV_USE_INOTIFY
2028 infy_init (EV_A);
2029
2030 if (fs_fd >= 0)
2031 infy_add (EV_A_ w);
2032 else
2033#endif
2034 ev_timer_start (EV_A_ &w->timer);
2035
2036 ev_start (EV_A_ (W)w, 1);
2037}
2038
2039void
2040ev_stat_stop (EV_P_ ev_stat *w)
2041{
2042 clear_pending (EV_A_ (W)w);
2043 if (expect_false (!ev_is_active (w)))
2044 return;
2045
2046#if EV_USE_INOTIFY
2047 infy_del (EV_A_ w);
2048#endif
2049 ev_timer_stop (EV_A_ &w->timer);
2050
2051 ev_stop (EV_A_ (W)w);
2052}
2053#endif
2054
2055#if EV_IDLE_ENABLE
2056void
2057ev_idle_start (EV_P_ ev_idle *w)
2058{
2059 if (expect_false (ev_is_active (w)))
2060 return;
2061
2062 pri_adjust (EV_A_ (W)w);
2063
2064 {
2065 int active = ++idlecnt [ABSPRI (w)];
2066
2067 ++idleall;
2068 ev_start (EV_A_ (W)w, active);
2069
2070 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2071 idles [ABSPRI (w)][active - 1] = w;
2072 }
2073}
2074
2075void
2076ev_idle_stop (EV_P_ ev_idle *w)
2077{
2078 clear_pending (EV_A_ (W)w);
2079 if (expect_false (!ev_is_active (w)))
2080 return;
2081
2082 {
2083 int active = ((W)w)->active;
2084
2085 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2086 ((W)idles [ABSPRI (w)][active - 1])->active = active;
2087
2088 ev_stop (EV_A_ (W)w);
2089 --idleall;
2090 }
2091}
2092#endif
2093
2094void
2095ev_prepare_start (EV_P_ ev_prepare *w)
2096{
2097 if (expect_false (ev_is_active (w)))
2098 return;
2099
2100 ev_start (EV_A_ (W)w, ++preparecnt);
2101 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2102 prepares [preparecnt - 1] = w;
2103}
2104
2105void
2106ev_prepare_stop (EV_P_ ev_prepare *w)
2107{
2108 clear_pending (EV_A_ (W)w);
2109 if (expect_false (!ev_is_active (w)))
2110 return;
2111
2112 {
2113 int active = ((W)w)->active;
2114 prepares [active - 1] = prepares [--preparecnt];
2115 ((W)prepares [active - 1])->active = active;
2116 }
2117
2118 ev_stop (EV_A_ (W)w);
2119}
2120
2121void
2122ev_check_start (EV_P_ ev_check *w)
2123{
2124 if (expect_false (ev_is_active (w)))
2125 return;
2126
2127 ev_start (EV_A_ (W)w, ++checkcnt);
2128 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2129 checks [checkcnt - 1] = w;
2130}
2131
2132void
2133ev_check_stop (EV_P_ ev_check *w)
2134{
2135 clear_pending (EV_A_ (W)w);
2136 if (expect_false (!ev_is_active (w)))
2137 return;
2138
2139 {
2140 int active = ((W)w)->active;
2141 checks [active - 1] = checks [--checkcnt];
2142 ((W)checks [active - 1])->active = active;
2143 }
2144
2145 ev_stop (EV_A_ (W)w);
2146}
2147
2148#if EV_EMBED_ENABLE
2149void noinline
2150ev_embed_sweep (EV_P_ ev_embed *w)
2151{
2152 ev_loop (w->loop, EVLOOP_NONBLOCK);
2153}
2154
2155static void
2156embed_cb (EV_P_ ev_io *io, int revents)
2157{
2158 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2159
2160 if (ev_cb (w))
2161 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2162 else
2163 ev_embed_sweep (loop, w);
2164}
2165
2166void
2167ev_embed_start (EV_P_ ev_embed *w)
2168{
2169 if (expect_false (ev_is_active (w)))
2170 return;
2171
2172 {
2173 struct ev_loop *loop = w->loop;
2174 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2175 ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
2176 }
2177
2178 ev_set_priority (&w->io, ev_priority (w));
2179 ev_io_start (EV_A_ &w->io);
2180
2181 ev_start (EV_A_ (W)w, 1);
2182}
2183
2184void
2185ev_embed_stop (EV_P_ ev_embed *w)
2186{
2187 clear_pending (EV_A_ (W)w);
2188 if (expect_false (!ev_is_active (w)))
2189 return;
2190
2191 ev_io_stop (EV_A_ &w->io);
2192
2193 ev_stop (EV_A_ (W)w);
2194}
2195#endif
2196
2197#if EV_FORK_ENABLE
2198void
2199ev_fork_start (EV_P_ ev_fork *w)
2200{
2201 if (expect_false (ev_is_active (w)))
2202 return;
2203
2204 ev_start (EV_A_ (W)w, ++forkcnt);
2205 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2206 forks [forkcnt - 1] = w;
2207}
2208
2209void
2210ev_fork_stop (EV_P_ ev_fork *w)
2211{
2212 clear_pending (EV_A_ (W)w);
2213 if (expect_false (!ev_is_active (w)))
2214 return;
2215
2216 {
2217 int active = ((W)w)->active;
2218 forks [active - 1] = forks [--forkcnt];
2219 ((W)forks [active - 1])->active = active;
2220 }
2221
2222 ev_stop (EV_A_ (W)w);
2223}
2224#endif
2225
1362/*****************************************************************************/ 2226/*****************************************************************************/
1363 2227
1364struct ev_once 2228struct ev_once
1365{ 2229{
1366 struct ev_io io; 2230 ev_io io;
1367 struct ev_timer to; 2231 ev_timer to;
1368 void (*cb)(int revents, void *arg); 2232 void (*cb)(int revents, void *arg);
1369 void *arg; 2233 void *arg;
1370}; 2234};
1371 2235
1372static void 2236static void
… …
1375 void (*cb)(int revents, void *arg) = once->cb; 2239 void (*cb)(int revents, void *arg) = once->cb;
1376 void *arg = once->arg; 2240 void *arg = once->arg;
1377 2241
1378 ev_io_stop (EV_A_ &once->io); 2242 ev_io_stop (EV_A_ &once->io);
1379 ev_timer_stop (EV_A_ &once->to); 2243 ev_timer_stop (EV_A_ &once->to);
1380 free (once); 2244 ev_free (once);
1381 2245
1382 cb (revents, arg); 2246 cb (revents, arg);
1383} 2247}
1384 2248
1385static void 2249static void
1386once_cb_io (EV_P_ struct ev_io *w, int revents) 2250once_cb_io (EV_P_ ev_io *w, int revents)
1387{ 2251{
1388 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 2252 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1389} 2253}
1390 2254
1391static void 2255static void
1392once_cb_to (EV_P_ struct ev_timer *w, int revents) 2256once_cb_to (EV_P_ ev_timer *w, int revents)
1393{ 2257{
1394 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 2258 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1395} 2259}
1396 2260
1397void 2261void
1398ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 2262ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1399{ 2263{
1400 struct ev_once *once = malloc (sizeof (struct ev_once)); 2264 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1401 2265
1402 if (!once) 2266 if (expect_false (!once))
2267 {
1403 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 2268 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1404 else 2269 return;
1405 { 2270 }
2271
1406 once->cb = cb; 2272 once->cb = cb;
1407 once->arg = arg; 2273 once->arg = arg;
1408 2274
1409 ev_watcher_init (&once->io, once_cb_io); 2275 ev_init (&once->io, once_cb_io);
1410 if (fd >= 0) 2276 if (fd >= 0)
1411 { 2277 {
1412 ev_io_set (&once->io, fd, events); 2278 ev_io_set (&once->io, fd, events);
1413 ev_io_start (EV_A_ &once->io); 2279 ev_io_start (EV_A_ &once->io);
1414 } 2280 }
1415 2281
1416 ev_watcher_init (&once->to, once_cb_to); 2282 ev_init (&once->to, once_cb_to);
1417 if (timeout >= 0.) 2283 if (timeout >= 0.)
1418 { 2284 {
1419 ev_timer_set (&once->to, timeout, 0.); 2285 ev_timer_set (&once->to, timeout, 0.);
1420 ev_timer_start (EV_A_ &once->to); 2286 ev_timer_start (EV_A_ &once->to);
1421 }
1422 } 2287 }
1423} 2288}
1424 2289
2290#ifdef __cplusplus
2291}
2292#endif
2293

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