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

Comparing libev/ev.c (file contents):
Revision 1.63 by root, Sun Nov 4 22:03:17 2007 UTC vs.
Revision 1.182 by root, Wed Dec 12 01:27:08 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
458
459#define array_free(stem, idx) \
460 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
236 461
237/*****************************************************************************/ 462/*****************************************************************************/
238 463
239static void 464void noinline
465ev_feed_event (EV_P_ void *w, int revents)
466{
467 W w_ = (W)w;
468 int pri = ABSPRI (w_);
469
470 if (expect_false (w_->pending))
471 pendings [pri][w_->pending - 1].events |= revents;
472 else
473 {
474 w_->pending = ++pendingcnt [pri];
475 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
476 pendings [pri][w_->pending - 1].w = w_;
477 pendings [pri][w_->pending - 1].events = revents;
478 }
479}
480
481void inline_speed
482queue_events (EV_P_ W *events, int eventcnt, int type)
483{
484 int i;
485
486 for (i = 0; i < eventcnt; ++i)
487 ev_feed_event (EV_A_ events [i], type);
488}
489
490/*****************************************************************************/
491
492void inline_size
240anfds_init (ANFD *base, int count) 493anfds_init (ANFD *base, int count)
241{ 494{
242 while (count--) 495 while (count--)
243 { 496 {
244 base->head = 0; 497 base->head = 0;
… …
247 500
248 ++base; 501 ++base;
249 } 502 }
250} 503}
251 504
252static void 505void inline_speed
253event (EV_P_ W w, int events)
254{
255 if (w->pending)
256 {
257 pendings [ABSPRI (w)][w->pending - 1].events |= events;
258 return;
259 }
260
261 w->pending = ++pendingcnt [ABSPRI (w)];
262 array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], );
263 pendings [ABSPRI (w)][w->pending - 1].w = w;
264 pendings [ABSPRI (w)][w->pending - 1].events = events;
265}
266
267static void
268queue_events (EV_P_ W *events, int eventcnt, int type)
269{
270 int i;
271
272 for (i = 0; i < eventcnt; ++i)
273 event (EV_A_ events [i], type);
274}
275
276static void
277fd_event (EV_P_ int fd, int events) 506fd_event (EV_P_ int fd, int revents)
278{ 507{
279 ANFD *anfd = anfds + fd; 508 ANFD *anfd = anfds + fd;
280 struct ev_io *w; 509 ev_io *w;
281 510
282 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)
283 { 512 {
284 int ev = w->events & events; 513 int ev = w->events & revents;
285 514
286 if (ev) 515 if (ev)
287 event (EV_A_ (W)w, ev); 516 ev_feed_event (EV_A_ (W)w, ev);
288 } 517 }
289} 518}
290 519
291/*****************************************************************************/ 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}
292 526
293static void 527void inline_size
294fd_reify (EV_P) 528fd_reify (EV_P)
295{ 529{
296 int i; 530 int i;
297 531
298 for (i = 0; i < fdchangecnt; ++i) 532 for (i = 0; i < fdchangecnt; ++i)
299 { 533 {
300 int fd = fdchanges [i]; 534 int fd = fdchanges [i];
301 ANFD *anfd = anfds + fd; 535 ANFD *anfd = anfds + fd;
302 struct ev_io *w; 536 ev_io *w;
303 537
304 int events = 0; 538 int events = 0;
305 539
306 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)
307 events |= w->events; 541 events |= w->events;
308 542
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
309 anfd->reify = 0; 552 anfd->reify = 0;
310 553
311 if (anfd->events != events)
312 {
313 method_modify (EV_A_ fd, anfd->events, events); 554 backend_modify (EV_A_ fd, anfd->events, events);
314 anfd->events = events; 555 anfd->events = events;
315 }
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)
396 { 644 {
645 int p = (k - 1) >> 1;
646
647 if (heap [p]->at <= w->at)
648 break;
649
397 heap [k] = heap [k >> 1]; 650 heap [k] = heap [p];
398 ((W)heap [k])->active = k + 1; 651 ((W)heap [k])->active = k + 1;
399 k >>= 1; 652 k = p;
400 } 653 }
401 654
402 heap [k] = w; 655 heap [k] = w;
403 ((W)heap [k])->active = k + 1; 656 ((W)heap [k])->active = k + 1;
404
405} 657}
406 658
407static void 659void inline_speed
408downheap (WT *heap, int N, int k) 660downheap (WT *heap, int N, int k)
409{ 661{
410 WT w = heap [k]; 662 WT w = heap [k];
411 663
412 while (k < (N >> 1)) 664 for (;;)
413 { 665 {
414 int j = k << 1; 666 int c = (k << 1) + 1;
415 667
416 if (j + 1 < N && heap [j]->at > heap [j + 1]->at) 668 if (c >= N)
417 ++j;
418
419 if (w->at <= heap [j]->at)
420 break; 669 break;
421 670
671 c += c + 1 < N && heap [c]->at > heap [c + 1]->at
672 ? 1 : 0;
673
674 if (w->at <= heap [c]->at)
675 break;
676
422 heap [k] = heap [j]; 677 heap [k] = heap [c];
423 ((W)heap [k])->active = k + 1; 678 ((W)heap [k])->active = k + 1;
679
424 k = j; 680 k = c;
425 } 681 }
426 682
427 heap [k] = w; 683 heap [k] = w;
428 ((W)heap [k])->active = k + 1; 684 ((W)heap [k])->active = k + 1;
429} 685}
430 686
687void inline_size
688adjustheap (WT *heap, int N, int k)
689{
690 upheap (heap, k);
691 downheap (heap, N, k);
692}
693
431/*****************************************************************************/ 694/*****************************************************************************/
432 695
433typedef struct 696typedef struct
434{ 697{
435 struct ev_watcher_list *head; 698 WL head;
436 sig_atomic_t volatile gotsig; 699 sig_atomic_t volatile gotsig;
437} ANSIG; 700} ANSIG;
438 701
439static ANSIG *signals; 702static ANSIG *signals;
440static int signalmax; 703static int signalmax;
441 704
442static int sigpipe [2]; 705static int sigpipe [2];
443static sig_atomic_t volatile gotsig; 706static sig_atomic_t volatile gotsig;
444static struct ev_io sigev; 707static ev_io sigev;
445 708
446static void 709void inline_size
447signals_init (ANSIG *base, int count) 710signals_init (ANSIG *base, int count)
448{ 711{
449 while (count--) 712 while (count--)
450 { 713 {
451 base->head = 0; 714 base->head = 0;
… …
456} 719}
457 720
458static void 721static void
459sighandler (int signum) 722sighandler (int signum)
460{ 723{
724#if _WIN32
725 signal (signum, sighandler);
726#endif
727
461 signals [signum - 1].gotsig = 1; 728 signals [signum - 1].gotsig = 1;
462 729
463 if (!gotsig) 730 if (!gotsig)
464 { 731 {
465 int old_errno = errno; 732 int old_errno = errno;
… …
467 write (sigpipe [1], &signum, 1); 734 write (sigpipe [1], &signum, 1);
468 errno = old_errno; 735 errno = old_errno;
469 } 736 }
470} 737}
471 738
739void noinline
740ev_feed_signal_event (EV_P_ int signum)
741{
742 WL w;
743
744#if EV_MULTIPLICITY
745 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
746#endif
747
748 --signum;
749
750 if (signum < 0 || signum >= signalmax)
751 return;
752
753 signals [signum].gotsig = 0;
754
755 for (w = signals [signum].head; w; w = w->next)
756 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
757}
758
472static void 759static void
473sigcb (EV_P_ struct ev_io *iow, int revents) 760sigcb (EV_P_ ev_io *iow, int revents)
474{ 761{
475 struct ev_watcher_list *w;
476 int signum; 762 int signum;
477 763
478 read (sigpipe [0], &revents, 1); 764 read (sigpipe [0], &revents, 1);
479 gotsig = 0; 765 gotsig = 0;
480 766
481 for (signum = signalmax; signum--; ) 767 for (signum = signalmax; signum--; )
482 if (signals [signum].gotsig) 768 if (signals [signum].gotsig)
483 { 769 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} 770}
490 771
491static void 772void inline_speed
773fd_intern (int fd)
774{
775#ifdef _WIN32
776 int arg = 1;
777 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
778#else
779 fcntl (fd, F_SETFD, FD_CLOEXEC);
780 fcntl (fd, F_SETFL, O_NONBLOCK);
781#endif
782}
783
784static void noinline
492siginit (EV_P) 785siginit (EV_P)
493{ 786{
494#ifndef WIN32 787 fd_intern (sigpipe [0]);
495 fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC); 788 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
502 789
503 ev_io_set (&sigev, sigpipe [0], EV_READ); 790 ev_io_set (&sigev, sigpipe [0], EV_READ);
504 ev_io_start (EV_A_ &sigev); 791 ev_io_start (EV_A_ &sigev);
505 ev_unref (EV_A); /* child watcher should not keep loop alive */ 792 ev_unref (EV_A); /* child watcher should not keep loop alive */
506} 793}
507 794
508/*****************************************************************************/ 795/*****************************************************************************/
509 796
797static WL childs [EV_PID_HASHSIZE];
798
510#ifndef WIN32 799#ifndef _WIN32
511 800
512static struct ev_child *childs [PID_HASHSIZE];
513static struct ev_signal childev; 801static ev_signal childev;
802
803void inline_speed
804child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
805{
806 ev_child *w;
807
808 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
809 if (w->pid == pid || !w->pid)
810 {
811 ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */
812 w->rpid = pid;
813 w->rstatus = status;
814 ev_feed_event (EV_A_ (W)w, EV_CHILD);
815 }
816}
514 817
515#ifndef WCONTINUED 818#ifndef WCONTINUED
516# define WCONTINUED 0 819# define WCONTINUED 0
517#endif 820#endif
518 821
519static void 822static 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) 823childcb (EV_P_ ev_signal *sw, int revents)
536{ 824{
537 int pid, status; 825 int pid, status;
538 826
827 /* some systems define WCONTINUED but then fail to support it (linux 2.4) */
539 if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) 828 if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
540 { 829 if (!WCONTINUED
830 || errno != EINVAL
831 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
832 return;
833
541 /* make sure we are called again until all childs have been reaped */ 834 /* make sure we are called again until all childs have been reaped */
835 /* we need to do it this way so that the callback gets called before we continue */
542 event (EV_A_ (W)sw, EV_SIGNAL); 836 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
543 837
544 child_reap (EV_A_ sw, pid, pid, status); 838 child_reap (EV_A_ sw, pid, pid, status);
839 if (EV_PID_HASHSIZE > 1)
545 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */ 840 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
546 }
547} 841}
548 842
549#endif 843#endif
550 844
551/*****************************************************************************/ 845/*****************************************************************************/
552 846
847#if EV_USE_PORT
848# include "ev_port.c"
849#endif
553#if EV_USE_KQUEUE 850#if EV_USE_KQUEUE
554# include "ev_kqueue.c" 851# include "ev_kqueue.c"
555#endif 852#endif
556#if EV_USE_EPOLL 853#if EV_USE_EPOLL
557# include "ev_epoll.c" 854# include "ev_epoll.c"
… …
574{ 871{
575 return EV_VERSION_MINOR; 872 return EV_VERSION_MINOR;
576} 873}
577 874
578/* return true if we are running with elevated privileges and should ignore env variables */ 875/* return true if we are running with elevated privileges and should ignore env variables */
579static int 876int inline_size
580enable_secure (void) 877enable_secure (void)
581{ 878{
582#ifdef WIN32 879#ifdef _WIN32
583 return 0; 880 return 0;
584#else 881#else
585 return getuid () != geteuid () 882 return getuid () != geteuid ()
586 || getgid () != getegid (); 883 || getgid () != getegid ();
587#endif 884#endif
588} 885}
589 886
590int 887unsigned int
591ev_method (EV_P) 888ev_supported_backends (void)
592{ 889{
593 return method; 890 unsigned int flags = 0;
594}
595 891
596static void 892 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
597loop_init (EV_P_ int methods) 893 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
894 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
895 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
896 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
897
898 return flags;
899}
900
901unsigned int
902ev_recommended_backends (void)
598{ 903{
599 if (!method) 904 unsigned int flags = ev_supported_backends ();
905
906#ifndef __NetBSD__
907 /* kqueue is borked on everything but netbsd apparently */
908 /* it usually doesn't work correctly on anything but sockets and pipes */
909 flags &= ~EVBACKEND_KQUEUE;
910#endif
911#ifdef __APPLE__
912 // flags &= ~EVBACKEND_KQUEUE; for documentation
913 flags &= ~EVBACKEND_POLL;
914#endif
915
916 return flags;
917}
918
919unsigned int
920ev_embeddable_backends (void)
921{
922 return EVBACKEND_EPOLL
923 | EVBACKEND_KQUEUE
924 | EVBACKEND_PORT;
925}
926
927unsigned int
928ev_backend (EV_P)
929{
930 return backend;
931}
932
933unsigned int
934ev_loop_count (EV_P)
935{
936 return loop_count;
937}
938
939static void noinline
940loop_init (EV_P_ unsigned int flags)
941{
942 if (!backend)
600 { 943 {
601#if EV_USE_MONOTONIC 944#if EV_USE_MONOTONIC
602 { 945 {
603 struct timespec ts; 946 struct timespec ts;
604 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 947 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
605 have_monotonic = 1; 948 have_monotonic = 1;
606 } 949 }
607#endif 950#endif
608 951
609 rt_now = ev_time (); 952 ev_rt_now = ev_time ();
610 mn_now = get_clock (); 953 mn_now = get_clock ();
611 now_floor = mn_now; 954 now_floor = mn_now;
612 rtmn_diff = rt_now - mn_now; 955 rtmn_diff = ev_rt_now - mn_now;
613 956
614 if (methods == EVMETHOD_AUTO) 957 /* pid check not overridable via env */
615 if (!enable_secure () && getenv ("LIBEV_METHODS")) 958#ifndef _WIN32
959 if (flags & EVFLAG_FORKCHECK)
960 curpid = getpid ();
961#endif
962
963 if (!(flags & EVFLAG_NOENV)
964 && !enable_secure ()
965 && getenv ("LIBEV_FLAGS"))
616 methods = atoi (getenv ("LIBEV_METHODS")); 966 flags = atoi (getenv ("LIBEV_FLAGS"));
617 else
618 methods = EVMETHOD_ANY;
619 967
620 method = 0; 968 if (!(flags & 0x0000ffffUL))
969 flags |= ev_recommended_backends ();
970
971 backend = 0;
972 backend_fd = -1;
621#if EV_USE_WIN32 973#if EV_USE_INOTIFY
622 if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods); 974 fs_fd = -2;
975#endif
976
977#if EV_USE_PORT
978 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
623#endif 979#endif
624#if EV_USE_KQUEUE 980#if EV_USE_KQUEUE
625 if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods); 981 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
626#endif 982#endif
627#if EV_USE_EPOLL 983#if EV_USE_EPOLL
628 if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods); 984 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
629#endif 985#endif
630#if EV_USE_POLL 986#if EV_USE_POLL
631 if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods); 987 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
632#endif 988#endif
633#if EV_USE_SELECT 989#if EV_USE_SELECT
634 if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods); 990 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
635#endif 991#endif
636 }
637}
638 992
639void 993 ev_init (&sigev, sigcb);
994 ev_set_priority (&sigev, EV_MAXPRI);
995 }
996}
997
998static void noinline
640loop_destroy (EV_P) 999loop_destroy (EV_P)
641{ 1000{
1001 int i;
1002
642#if EV_USE_WIN32 1003#if EV_USE_INOTIFY
643 if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A); 1004 if (fs_fd >= 0)
1005 close (fs_fd);
1006#endif
1007
1008 if (backend_fd >= 0)
1009 close (backend_fd);
1010
1011#if EV_USE_PORT
1012 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
644#endif 1013#endif
645#if EV_USE_KQUEUE 1014#if EV_USE_KQUEUE
646 if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A); 1015 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
647#endif 1016#endif
648#if EV_USE_EPOLL 1017#if EV_USE_EPOLL
649 if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A); 1018 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
650#endif 1019#endif
651#if EV_USE_POLL 1020#if EV_USE_POLL
652 if (method == EVMETHOD_POLL ) poll_destroy (EV_A); 1021 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
653#endif 1022#endif
654#if EV_USE_SELECT 1023#if EV_USE_SELECT
655 if (method == EVMETHOD_SELECT) select_destroy (EV_A); 1024 if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
656#endif 1025#endif
657 1026
658 method = 0; 1027 for (i = NUMPRI; i--; )
659 /*TODO*/ 1028 {
660} 1029 array_free (pending, [i]);
1030#if EV_IDLE_ENABLE
1031 array_free (idle, [i]);
1032#endif
1033 }
661 1034
662void 1035 /* have to use the microsoft-never-gets-it-right macro */
1036 array_free (fdchange, EMPTY);
1037 array_free (timer, EMPTY);
1038#if EV_PERIODIC_ENABLE
1039 array_free (periodic, EMPTY);
1040#endif
1041 array_free (prepare, EMPTY);
1042 array_free (check, EMPTY);
1043
1044 backend = 0;
1045}
1046
1047void inline_size infy_fork (EV_P);
1048
1049void inline_size
663loop_fork (EV_P) 1050loop_fork (EV_P)
664{ 1051{
665 /*TODO*/ 1052#if EV_USE_PORT
1053 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1054#endif
1055#if EV_USE_KQUEUE
1056 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
1057#endif
666#if EV_USE_EPOLL 1058#if EV_USE_EPOLL
667 if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A); 1059 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
668#endif 1060#endif
669#if EV_USE_KQUEUE 1061#if EV_USE_INOTIFY
670 if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A); 1062 infy_fork (EV_A);
671#endif 1063#endif
1064
1065 if (ev_is_active (&sigev))
1066 {
1067 /* default loop */
1068
1069 ev_ref (EV_A);
1070 ev_io_stop (EV_A_ &sigev);
1071 close (sigpipe [0]);
1072 close (sigpipe [1]);
1073
1074 while (pipe (sigpipe))
1075 syserr ("(libev) error creating pipe");
1076
1077 siginit (EV_A);
1078 }
1079
1080 postfork = 0;
672} 1081}
673 1082
674#if EV_MULTIPLICITY 1083#if EV_MULTIPLICITY
675struct ev_loop * 1084struct ev_loop *
676ev_loop_new (int methods) 1085ev_loop_new (unsigned int flags)
677{ 1086{
678 struct ev_loop *loop = (struct ev_loop *)calloc (1, sizeof (struct ev_loop)); 1087 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
679 1088
1089 memset (loop, 0, sizeof (struct ev_loop));
1090
680 loop_init (EV_A_ methods); 1091 loop_init (EV_A_ flags);
681 1092
682 if (ev_method (EV_A)) 1093 if (ev_backend (EV_A))
683 return loop; 1094 return loop;
684 1095
685 return 0; 1096 return 0;
686} 1097}
687 1098
688void 1099void
689ev_loop_destroy (EV_P) 1100ev_loop_destroy (EV_P)
690{ 1101{
691 loop_destroy (EV_A); 1102 loop_destroy (EV_A);
692 free (loop); 1103 ev_free (loop);
693} 1104}
694 1105
695void 1106void
696ev_loop_fork (EV_P) 1107ev_loop_fork (EV_P)
697{ 1108{
698 loop_fork (EV_A); 1109 postfork = 1;
699} 1110}
700 1111
701#endif 1112#endif
702 1113
703#if EV_MULTIPLICITY 1114#if EV_MULTIPLICITY
704struct ev_loop default_loop_struct;
705static struct ev_loop *default_loop;
706
707struct ev_loop * 1115struct ev_loop *
1116ev_default_loop_init (unsigned int flags)
708#else 1117#else
709static int default_loop;
710
711int 1118int
1119ev_default_loop (unsigned int flags)
712#endif 1120#endif
713ev_default_loop (int methods)
714{ 1121{
715 if (sigpipe [0] == sigpipe [1]) 1122 if (sigpipe [0] == sigpipe [1])
716 if (pipe (sigpipe)) 1123 if (pipe (sigpipe))
717 return 0; 1124 return 0;
718 1125
719 if (!default_loop) 1126 if (!ev_default_loop_ptr)
720 { 1127 {
721#if EV_MULTIPLICITY 1128#if EV_MULTIPLICITY
722 struct ev_loop *loop = default_loop = &default_loop_struct; 1129 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
723#else 1130#else
724 default_loop = 1; 1131 ev_default_loop_ptr = 1;
725#endif 1132#endif
726 1133
727 loop_init (EV_A_ methods); 1134 loop_init (EV_A_ flags);
728 1135
729 if (ev_method (EV_A)) 1136 if (ev_backend (EV_A))
730 { 1137 {
731 ev_watcher_init (&sigev, sigcb);
732 ev_set_priority (&sigev, EV_MAXPRI);
733 siginit (EV_A); 1138 siginit (EV_A);
734 1139
735#ifndef WIN32 1140#ifndef _WIN32
736 ev_signal_init (&childev, childcb, SIGCHLD); 1141 ev_signal_init (&childev, childcb, SIGCHLD);
737 ev_set_priority (&childev, EV_MAXPRI); 1142 ev_set_priority (&childev, EV_MAXPRI);
738 ev_signal_start (EV_A_ &childev); 1143 ev_signal_start (EV_A_ &childev);
739 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1144 ev_unref (EV_A); /* child watcher should not keep loop alive */
740#endif 1145#endif
741 } 1146 }
742 else 1147 else
743 default_loop = 0; 1148 ev_default_loop_ptr = 0;
744 } 1149 }
745 1150
746 return default_loop; 1151 return ev_default_loop_ptr;
747} 1152}
748 1153
749void 1154void
750ev_default_destroy (void) 1155ev_default_destroy (void)
751{ 1156{
752#if EV_MULTIPLICITY 1157#if EV_MULTIPLICITY
753 struct ev_loop *loop = default_loop; 1158 struct ev_loop *loop = ev_default_loop_ptr;
754#endif 1159#endif
755 1160
1161#ifndef _WIN32
756 ev_ref (EV_A); /* child watcher */ 1162 ev_ref (EV_A); /* child watcher */
757 ev_signal_stop (EV_A_ &childev); 1163 ev_signal_stop (EV_A_ &childev);
1164#endif
758 1165
759 ev_ref (EV_A); /* signal watcher */ 1166 ev_ref (EV_A); /* signal watcher */
760 ev_io_stop (EV_A_ &sigev); 1167 ev_io_stop (EV_A_ &sigev);
761 1168
762 close (sigpipe [0]); sigpipe [0] = 0; 1169 close (sigpipe [0]); sigpipe [0] = 0;
… …
767 1174
768void 1175void
769ev_default_fork (void) 1176ev_default_fork (void)
770{ 1177{
771#if EV_MULTIPLICITY 1178#if EV_MULTIPLICITY
772 struct ev_loop *loop = default_loop; 1179 struct ev_loop *loop = ev_default_loop_ptr;
773#endif 1180#endif
774 1181
775 loop_fork (EV_A); 1182 if (backend)
776 1183 postfork = 1;
777 ev_io_stop (EV_A_ &sigev);
778 close (sigpipe [0]);
779 close (sigpipe [1]);
780 pipe (sigpipe);
781
782 ev_ref (EV_A); /* signal watcher */
783 siginit (EV_A);
784} 1184}
785 1185
786/*****************************************************************************/ 1186/*****************************************************************************/
787 1187
788static void 1188void
1189ev_invoke (EV_P_ void *w, int revents)
1190{
1191 EV_CB_INVOKE ((W)w, revents);
1192}
1193
1194void inline_speed
789call_pending (EV_P) 1195call_pending (EV_P)
790{ 1196{
791 int pri; 1197 int pri;
792 1198
793 for (pri = NUMPRI; pri--; ) 1199 for (pri = NUMPRI; pri--; )
794 while (pendingcnt [pri]) 1200 while (pendingcnt [pri])
795 { 1201 {
796 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 1202 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
797 1203
798 if (p->w) 1204 if (expect_true (p->w))
799 { 1205 {
1206 /*assert (("non-pending watcher on pending list", p->w->pending));*/
1207
800 p->w->pending = 0; 1208 p->w->pending = 0;
801 1209 EV_CB_INVOKE (p->w, p->events);
802 (*(void (**)(EV_P_ W, int))&p->w->cb) (EV_A_ p->w, p->events);
803 } 1210 }
804 } 1211 }
805} 1212}
806 1213
807static void 1214void inline_size
808timers_reify (EV_P) 1215timers_reify (EV_P)
809{ 1216{
810 while (timercnt && ((WT)timers [0])->at <= mn_now) 1217 while (timercnt && ((WT)timers [0])->at <= mn_now)
811 { 1218 {
812 struct ev_timer *w = timers [0]; 1219 ev_timer *w = (ev_timer *)timers [0];
813 1220
814 assert (("inactive timer on timer heap detected", ev_is_active (w))); 1221 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
815 1222
816 /* first reschedule or stop timer */ 1223 /* first reschedule or stop timer */
817 if (w->repeat) 1224 if (w->repeat)
818 { 1225 {
819 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 1226 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1227
820 ((WT)w)->at = mn_now + w->repeat; 1228 ((WT)w)->at += w->repeat;
1229 if (((WT)w)->at < mn_now)
1230 ((WT)w)->at = mn_now;
1231
821 downheap ((WT *)timers, timercnt, 0); 1232 downheap (timers, timercnt, 0);
822 } 1233 }
823 else 1234 else
824 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ 1235 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
825 1236
826 event (EV_A_ (W)w, EV_TIMEOUT); 1237 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
827 } 1238 }
828} 1239}
829 1240
830static void 1241#if EV_PERIODIC_ENABLE
1242void inline_size
831periodics_reify (EV_P) 1243periodics_reify (EV_P)
832{ 1244{
833 while (periodiccnt && ((WT)periodics [0])->at <= rt_now) 1245 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
834 { 1246 {
835 struct ev_periodic *w = periodics [0]; 1247 ev_periodic *w = (ev_periodic *)periodics [0];
836 1248
837 assert (("inactive timer on periodic heap detected", ev_is_active (w))); 1249 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
838 1250
839 /* first reschedule or stop timer */ 1251 /* first reschedule or stop timer */
840 if (w->interval) 1252 if (w->reschedule_cb)
841 { 1253 {
1254 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1255 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1256 downheap (periodics, periodiccnt, 0);
1257 }
1258 else if (w->interval)
1259 {
842 ((WT)w)->at += floor ((rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval; 1260 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1261 if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
843 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > rt_now)); 1262 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
844 downheap ((WT *)periodics, periodiccnt, 0); 1263 downheap (periodics, periodiccnt, 0);
845 } 1264 }
846 else 1265 else
847 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 1266 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
848 1267
849 event (EV_A_ (W)w, EV_PERIODIC); 1268 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
850 } 1269 }
851} 1270}
852 1271
853static void 1272static void noinline
854periodics_reschedule (EV_P) 1273periodics_reschedule (EV_P)
855{ 1274{
856 int i; 1275 int i;
857 1276
858 /* adjust periodics after time jump */ 1277 /* adjust periodics after time jump */
859 for (i = 0; i < periodiccnt; ++i) 1278 for (i = 0; i < periodiccnt; ++i)
860 { 1279 {
861 struct ev_periodic *w = periodics [i]; 1280 ev_periodic *w = (ev_periodic *)periodics [i];
862 1281
1282 if (w->reschedule_cb)
1283 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
863 if (w->interval) 1284 else if (w->interval)
1285 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1286 }
1287
1288 /* now rebuild the heap */
1289 for (i = periodiccnt >> 1; i--; )
1290 downheap (periodics, periodiccnt, i);
1291}
1292#endif
1293
1294#if EV_IDLE_ENABLE
1295void inline_size
1296idle_reify (EV_P)
1297{
1298 if (expect_false (idleall))
1299 {
1300 int pri;
1301
1302 for (pri = NUMPRI; pri--; )
864 { 1303 {
865 ev_tstamp diff = ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval; 1304 if (pendingcnt [pri])
1305 break;
866 1306
867 if (fabs (diff) >= 1e-4) 1307 if (idlecnt [pri])
868 { 1308 {
869 ev_periodic_stop (EV_A_ w); 1309 queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
870 ev_periodic_start (EV_A_ w); 1310 break;
871
872 i = 0; /* restart loop, inefficient, but time jumps should be rare */
873 } 1311 }
874 } 1312 }
875 } 1313 }
876} 1314}
1315#endif
877 1316
878inline int 1317void inline_speed
879time_update_monotonic (EV_P) 1318time_update (EV_P_ ev_tstamp max_block)
880{
881 mn_now = get_clock ();
882
883 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
884 {
885 rt_now = rtmn_diff + mn_now;
886 return 0;
887 }
888 else
889 {
890 now_floor = mn_now;
891 rt_now = ev_time ();
892 return 1;
893 }
894}
895
896static void
897time_update (EV_P)
898{ 1319{
899 int i; 1320 int i;
900 1321
901#if EV_USE_MONOTONIC 1322#if EV_USE_MONOTONIC
902 if (expect_true (have_monotonic)) 1323 if (expect_true (have_monotonic))
903 { 1324 {
904 if (time_update_monotonic (EV_A)) 1325 ev_tstamp odiff = rtmn_diff;
1326
1327 mn_now = get_clock ();
1328
1329 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
1330 /* interpolate in the meantime */
1331 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
905 { 1332 {
906 ev_tstamp odiff = rtmn_diff; 1333 ev_rt_now = rtmn_diff + mn_now;
1334 return;
1335 }
907 1336
1337 now_floor = mn_now;
1338 ev_rt_now = ev_time ();
1339
908 for (i = 4; --i; ) /* loop a few times, before making important decisions */ 1340 /* loop a few times, before making important decisions.
1341 * on the choice of "4": one iteration isn't enough,
1342 * in case we get preempted during the calls to
1343 * ev_time and get_clock. a second call is almost guaranteed
1344 * to succeed in that case, though. and looping a few more times
1345 * doesn't hurt either as we only do this on time-jumps or
1346 * in the unlikely event of having been preempted here.
1347 */
1348 for (i = 4; --i; )
909 { 1349 {
910 rtmn_diff = rt_now - mn_now; 1350 rtmn_diff = ev_rt_now - mn_now;
911 1351
912 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) 1352 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
913 return; /* all is well */ 1353 return; /* all is well */
914 1354
915 rt_now = ev_time (); 1355 ev_rt_now = ev_time ();
916 mn_now = get_clock (); 1356 mn_now = get_clock ();
917 now_floor = mn_now; 1357 now_floor = mn_now;
918 } 1358 }
919 1359
1360# if EV_PERIODIC_ENABLE
1361 periodics_reschedule (EV_A);
1362# endif
1363 /* no timer adjustment, as the monotonic clock doesn't jump */
1364 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1365 }
1366 else
1367#endif
1368 {
1369 ev_rt_now = ev_time ();
1370
1371 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1372 {
1373#if EV_PERIODIC_ENABLE
920 periodics_reschedule (EV_A); 1374 periodics_reschedule (EV_A);
921 /* no timer adjustment, as the monotonic clock doesn't jump */ 1375#endif
922 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */ 1376 /* adjust timers. this is easy, as the offset is the same for all of them */
1377 for (i = 0; i < timercnt; ++i)
1378 ((WT)timers [i])->at += ev_rt_now - mn_now;
923 } 1379 }
924 }
925 else
926#endif
927 {
928 rt_now = ev_time ();
929 1380
930 if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
931 {
932 periodics_reschedule (EV_A);
933
934 /* adjust timers. this is easy, as the offset is the same for all */
935 for (i = 0; i < timercnt; ++i)
936 ((WT)timers [i])->at += rt_now - mn_now;
937 }
938
939 mn_now = rt_now; 1381 mn_now = ev_rt_now;
940 } 1382 }
941} 1383}
942 1384
943void 1385void
944ev_ref (EV_P) 1386ev_ref (EV_P)
… …
955static int loop_done; 1397static int loop_done;
956 1398
957void 1399void
958ev_loop (EV_P_ int flags) 1400ev_loop (EV_P_ int flags)
959{ 1401{
960 double block;
961 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0; 1402 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
1403 ? EVUNLOOP_ONE
1404 : EVUNLOOP_CANCEL;
1405
1406 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
962 1407
963 do 1408 do
964 { 1409 {
1410#ifndef _WIN32
1411 if (expect_false (curpid)) /* penalise the forking check even more */
1412 if (expect_false (getpid () != curpid))
1413 {
1414 curpid = getpid ();
1415 postfork = 1;
1416 }
1417#endif
1418
1419#if EV_FORK_ENABLE
1420 /* we might have forked, so queue fork handlers */
1421 if (expect_false (postfork))
1422 if (forkcnt)
1423 {
1424 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1425 call_pending (EV_A);
1426 }
1427#endif
1428
965 /* queue check watchers (and execute them) */ 1429 /* queue prepare watchers (and execute them) */
966 if (expect_false (preparecnt)) 1430 if (expect_false (preparecnt))
967 { 1431 {
968 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 1432 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
969 call_pending (EV_A); 1433 call_pending (EV_A);
970 } 1434 }
971 1435
1436 if (expect_false (!activecnt))
1437 break;
1438
1439 /* we might have forked, so reify kernel state if necessary */
1440 if (expect_false (postfork))
1441 loop_fork (EV_A);
1442
972 /* update fd-related kernel structures */ 1443 /* update fd-related kernel structures */
973 fd_reify (EV_A); 1444 fd_reify (EV_A);
974 1445
975 /* calculate blocking time */ 1446 /* calculate blocking time */
1447 {
1448 ev_tstamp block;
976 1449
977 /* we only need this for !monotonic clockor timers, but as we basically 1450 if (expect_false (flags & EVLOOP_NONBLOCK || idleall || !activecnt))
978 always have timers, we just calculate it always */ 1451 block = 0.; /* do not block at all */
979#if EV_USE_MONOTONIC
980 if (expect_true (have_monotonic))
981 time_update_monotonic (EV_A);
982 else 1452 else
983#endif
984 { 1453 {
985 rt_now = ev_time (); 1454 /* update time to cancel out callback processing overhead */
986 mn_now = rt_now; 1455 time_update (EV_A_ 1e100);
987 }
988 1456
989 if (flags & EVLOOP_NONBLOCK || idlecnt)
990 block = 0.;
991 else
992 {
993 block = MAX_BLOCKTIME; 1457 block = MAX_BLOCKTIME;
994 1458
995 if (timercnt) 1459 if (timercnt)
996 { 1460 {
997 ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge; 1461 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
998 if (block > to) block = to; 1462 if (block > to) block = to;
999 } 1463 }
1000 1464
1465#if EV_PERIODIC_ENABLE
1001 if (periodiccnt) 1466 if (periodiccnt)
1002 { 1467 {
1003 ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge; 1468 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1004 if (block > to) block = to; 1469 if (block > to) block = to;
1005 } 1470 }
1471#endif
1006 1472
1007 if (block < 0.) block = 0.; 1473 if (expect_false (block < 0.)) block = 0.;
1008 } 1474 }
1009 1475
1476 ++loop_count;
1010 method_poll (EV_A_ block); 1477 backend_poll (EV_A_ block);
1011 1478
1012 /* update rt_now, do magic */ 1479 /* update ev_rt_now, do magic */
1013 time_update (EV_A); 1480 time_update (EV_A_ block);
1481 }
1014 1482
1015 /* queue pending timers and reschedule them */ 1483 /* queue pending timers and reschedule them */
1016 timers_reify (EV_A); /* relative timers called last */ 1484 timers_reify (EV_A); /* relative timers called last */
1485#if EV_PERIODIC_ENABLE
1017 periodics_reify (EV_A); /* absolute timers called first */ 1486 periodics_reify (EV_A); /* absolute timers called first */
1487#endif
1018 1488
1489#if EV_IDLE_ENABLE
1019 /* queue idle watchers unless io or timers are pending */ 1490 /* queue idle watchers unless other events are pending */
1020 if (!pendingcnt) 1491 idle_reify (EV_A);
1021 queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); 1492#endif
1022 1493
1023 /* queue check watchers, to be executed first */ 1494 /* queue check watchers, to be executed first */
1024 if (checkcnt) 1495 if (expect_false (checkcnt))
1025 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 1496 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1026 1497
1027 call_pending (EV_A); 1498 call_pending (EV_A);
1499
1028 } 1500 }
1029 while (activecnt && !loop_done); 1501 while (expect_true (activecnt && !loop_done));
1030 1502
1031 if (loop_done != 2) 1503 if (loop_done == EVUNLOOP_ONE)
1032 loop_done = 0; 1504 loop_done = EVUNLOOP_CANCEL;
1033} 1505}
1034 1506
1035void 1507void
1036ev_unloop (EV_P_ int how) 1508ev_unloop (EV_P_ int how)
1037{ 1509{
1038 loop_done = how; 1510 loop_done = how;
1039} 1511}
1040 1512
1041/*****************************************************************************/ 1513/*****************************************************************************/
1042 1514
1043inline void 1515void inline_size
1044wlist_add (WL *head, WL elem) 1516wlist_add (WL *head, WL elem)
1045{ 1517{
1046 elem->next = *head; 1518 elem->next = *head;
1047 *head = elem; 1519 *head = elem;
1048} 1520}
1049 1521
1050inline void 1522void inline_size
1051wlist_del (WL *head, WL elem) 1523wlist_del (WL *head, WL elem)
1052{ 1524{
1053 while (*head) 1525 while (*head)
1054 { 1526 {
1055 if (*head == elem) 1527 if (*head == elem)
… …
1060 1532
1061 head = &(*head)->next; 1533 head = &(*head)->next;
1062 } 1534 }
1063} 1535}
1064 1536
1065inline void 1537void inline_speed
1066ev_clear_pending (EV_P_ W w) 1538clear_pending (EV_P_ W w)
1067{ 1539{
1068 if (w->pending) 1540 if (w->pending)
1069 { 1541 {
1070 pendings [ABSPRI (w)][w->pending - 1].w = 0; 1542 pendings [ABSPRI (w)][w->pending - 1].w = 0;
1071 w->pending = 0; 1543 w->pending = 0;
1072 } 1544 }
1073} 1545}
1074 1546
1075inline void 1547int
1548ev_clear_pending (EV_P_ void *w)
1549{
1550 W w_ = (W)w;
1551 int pending = w_->pending;
1552
1553 if (expect_true (pending))
1554 {
1555 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
1556 w_->pending = 0;
1557 p->w = 0;
1558 return p->events;
1559 }
1560 else
1561 return 0;
1562}
1563
1564void inline_size
1565pri_adjust (EV_P_ W w)
1566{
1567 int pri = w->priority;
1568 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1569 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1570 w->priority = pri;
1571}
1572
1573void inline_speed
1076ev_start (EV_P_ W w, int active) 1574ev_start (EV_P_ W w, int active)
1077{ 1575{
1078 if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; 1576 pri_adjust (EV_A_ w);
1079 if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1080
1081 w->active = active; 1577 w->active = active;
1082 ev_ref (EV_A); 1578 ev_ref (EV_A);
1083} 1579}
1084 1580
1085inline void 1581void inline_size
1086ev_stop (EV_P_ W w) 1582ev_stop (EV_P_ W w)
1087{ 1583{
1088 ev_unref (EV_A); 1584 ev_unref (EV_A);
1089 w->active = 0; 1585 w->active = 0;
1090} 1586}
1091 1587
1092/*****************************************************************************/ 1588/*****************************************************************************/
1093 1589
1094void 1590void noinline
1095ev_io_start (EV_P_ struct ev_io *w) 1591ev_io_start (EV_P_ ev_io *w)
1096{ 1592{
1097 int fd = w->fd; 1593 int fd = w->fd;
1098 1594
1099 if (ev_is_active (w)) 1595 if (expect_false (ev_is_active (w)))
1100 return; 1596 return;
1101 1597
1102 assert (("ev_io_start called with negative fd", fd >= 0)); 1598 assert (("ev_io_start called with negative fd", fd >= 0));
1103 1599
1104 ev_start (EV_A_ (W)w, 1); 1600 ev_start (EV_A_ (W)w, 1);
1105 array_needsize (anfds, anfdmax, fd + 1, anfds_init); 1601 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1106 wlist_add ((WL *)&anfds[fd].head, (WL)w); 1602 wlist_add (&anfds[fd].head, (WL)w);
1107 1603
1108 fd_change (EV_A_ fd); 1604 fd_change (EV_A_ fd);
1109} 1605}
1110 1606
1111void 1607void noinline
1112ev_io_stop (EV_P_ struct ev_io *w) 1608ev_io_stop (EV_P_ ev_io *w)
1113{ 1609{
1114 ev_clear_pending (EV_A_ (W)w); 1610 clear_pending (EV_A_ (W)w);
1115 if (!ev_is_active (w)) 1611 if (expect_false (!ev_is_active (w)))
1116 return; 1612 return;
1117 1613
1614 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1615
1118 wlist_del ((WL *)&anfds[w->fd].head, (WL)w); 1616 wlist_del (&anfds[w->fd].head, (WL)w);
1119 ev_stop (EV_A_ (W)w); 1617 ev_stop (EV_A_ (W)w);
1120 1618
1121 fd_change (EV_A_ w->fd); 1619 fd_change (EV_A_ w->fd);
1122} 1620}
1123 1621
1124void 1622void noinline
1125ev_timer_start (EV_P_ struct ev_timer *w) 1623ev_timer_start (EV_P_ ev_timer *w)
1126{ 1624{
1127 if (ev_is_active (w)) 1625 if (expect_false (ev_is_active (w)))
1128 return; 1626 return;
1129 1627
1130 ((WT)w)->at += mn_now; 1628 ((WT)w)->at += mn_now;
1131 1629
1132 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 1630 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1133 1631
1134 ev_start (EV_A_ (W)w, ++timercnt); 1632 ev_start (EV_A_ (W)w, ++timercnt);
1135 array_needsize (timers, timermax, timercnt, ); 1633 array_needsize (WT, timers, timermax, timercnt, EMPTY2);
1136 timers [timercnt - 1] = w; 1634 timers [timercnt - 1] = (WT)w;
1137 upheap ((WT *)timers, timercnt - 1); 1635 upheap (timers, timercnt - 1);
1138 1636
1139 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 1637 /*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
1140} 1638}
1141 1639
1142void 1640void noinline
1143ev_timer_stop (EV_P_ struct ev_timer *w) 1641ev_timer_stop (EV_P_ ev_timer *w)
1144{ 1642{
1145 ev_clear_pending (EV_A_ (W)w); 1643 clear_pending (EV_A_ (W)w);
1146 if (!ev_is_active (w)) 1644 if (expect_false (!ev_is_active (w)))
1147 return; 1645 return;
1148 1646
1149 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 1647 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w));
1150 1648
1151 if (((W)w)->active < timercnt--) 1649 {
1650 int active = ((W)w)->active;
1651
1652 if (expect_true (--active < --timercnt))
1152 { 1653 {
1153 timers [((W)w)->active - 1] = timers [timercnt]; 1654 timers [active] = timers [timercnt];
1154 downheap ((WT *)timers, timercnt, ((W)w)->active - 1); 1655 adjustheap (timers, timercnt, active);
1155 } 1656 }
1657 }
1156 1658
1157 ((WT)w)->at = w->repeat; 1659 ((WT)w)->at -= mn_now;
1158 1660
1159 ev_stop (EV_A_ (W)w); 1661 ev_stop (EV_A_ (W)w);
1160} 1662}
1161 1663
1162void 1664void noinline
1163ev_timer_again (EV_P_ struct ev_timer *w) 1665ev_timer_again (EV_P_ ev_timer *w)
1164{ 1666{
1165 if (ev_is_active (w)) 1667 if (ev_is_active (w))
1166 { 1668 {
1167 if (w->repeat) 1669 if (w->repeat)
1168 { 1670 {
1169 ((WT)w)->at = mn_now + w->repeat; 1671 ((WT)w)->at = mn_now + w->repeat;
1170 downheap ((WT *)timers, timercnt, ((W)w)->active - 1); 1672 adjustheap (timers, timercnt, ((W)w)->active - 1);
1171 } 1673 }
1172 else 1674 else
1173 ev_timer_stop (EV_A_ w); 1675 ev_timer_stop (EV_A_ w);
1174 } 1676 }
1175 else if (w->repeat) 1677 else if (w->repeat)
1678 {
1679 w->at = w->repeat;
1176 ev_timer_start (EV_A_ w); 1680 ev_timer_start (EV_A_ w);
1681 }
1177} 1682}
1178 1683
1179void 1684#if EV_PERIODIC_ENABLE
1685void noinline
1180ev_periodic_start (EV_P_ struct ev_periodic *w) 1686ev_periodic_start (EV_P_ ev_periodic *w)
1181{ 1687{
1182 if (ev_is_active (w)) 1688 if (expect_false (ev_is_active (w)))
1183 return; 1689 return;
1184 1690
1691 if (w->reschedule_cb)
1692 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1693 else if (w->interval)
1694 {
1185 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 1695 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1186
1187 /* this formula differs from the one in periodic_reify because we do not always round up */ 1696 /* this formula differs from the one in periodic_reify because we do not always round up */
1188 if (w->interval)
1189 ((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval; 1697 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1698 }
1699 else
1700 ((WT)w)->at = w->offset;
1190 1701
1191 ev_start (EV_A_ (W)w, ++periodiccnt); 1702 ev_start (EV_A_ (W)w, ++periodiccnt);
1192 array_needsize (periodics, periodicmax, periodiccnt, ); 1703 array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2);
1193 periodics [periodiccnt - 1] = w; 1704 periodics [periodiccnt - 1] = (WT)w;
1194 upheap ((WT *)periodics, periodiccnt - 1); 1705 upheap (periodics, periodiccnt - 1);
1195 1706
1196 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1707 /*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
1197} 1708}
1198 1709
1199void 1710void noinline
1200ev_periodic_stop (EV_P_ struct ev_periodic *w) 1711ev_periodic_stop (EV_P_ ev_periodic *w)
1201{ 1712{
1202 ev_clear_pending (EV_A_ (W)w); 1713 clear_pending (EV_A_ (W)w);
1203 if (!ev_is_active (w)) 1714 if (expect_false (!ev_is_active (w)))
1204 return; 1715 return;
1205 1716
1206 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1717 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w));
1207 1718
1208 if (((W)w)->active < periodiccnt--) 1719 {
1720 int active = ((W)w)->active;
1721
1722 if (expect_true (--active < --periodiccnt))
1209 { 1723 {
1210 periodics [((W)w)->active - 1] = periodics [periodiccnt]; 1724 periodics [active] = periodics [periodiccnt];
1211 downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1); 1725 adjustheap (periodics, periodiccnt, active);
1212 } 1726 }
1727 }
1213 1728
1214 ev_stop (EV_A_ (W)w); 1729 ev_stop (EV_A_ (W)w);
1215} 1730}
1216 1731
1217void 1732void noinline
1218ev_idle_start (EV_P_ struct ev_idle *w) 1733ev_periodic_again (EV_P_ ev_periodic *w)
1219{ 1734{
1220 if (ev_is_active (w)) 1735 /* TODO: use adjustheap and recalculation */
1221 return;
1222
1223 ev_start (EV_A_ (W)w, ++idlecnt);
1224 array_needsize (idles, idlemax, idlecnt, );
1225 idles [idlecnt - 1] = w;
1226}
1227
1228void
1229ev_idle_stop (EV_P_ struct ev_idle *w)
1230{
1231 ev_clear_pending (EV_A_ (W)w);
1232 if (ev_is_active (w))
1233 return;
1234
1235 idles [((W)w)->active - 1] = idles [--idlecnt];
1236 ev_stop (EV_A_ (W)w); 1736 ev_periodic_stop (EV_A_ w);
1737 ev_periodic_start (EV_A_ w);
1237} 1738}
1238 1739#endif
1239void
1240ev_prepare_start (EV_P_ struct ev_prepare *w)
1241{
1242 if (ev_is_active (w))
1243 return;
1244
1245 ev_start (EV_A_ (W)w, ++preparecnt);
1246 array_needsize (prepares, preparemax, preparecnt, );
1247 prepares [preparecnt - 1] = w;
1248}
1249
1250void
1251ev_prepare_stop (EV_P_ struct ev_prepare *w)
1252{
1253 ev_clear_pending (EV_A_ (W)w);
1254 if (ev_is_active (w))
1255 return;
1256
1257 prepares [((W)w)->active - 1] = prepares [--preparecnt];
1258 ev_stop (EV_A_ (W)w);
1259}
1260
1261void
1262ev_check_start (EV_P_ struct ev_check *w)
1263{
1264 if (ev_is_active (w))
1265 return;
1266
1267 ev_start (EV_A_ (W)w, ++checkcnt);
1268 array_needsize (checks, checkmax, checkcnt, );
1269 checks [checkcnt - 1] = w;
1270}
1271
1272void
1273ev_check_stop (EV_P_ struct ev_check *w)
1274{
1275 ev_clear_pending (EV_A_ (W)w);
1276 if (ev_is_active (w))
1277 return;
1278
1279 checks [((W)w)->active - 1] = checks [--checkcnt];
1280 ev_stop (EV_A_ (W)w);
1281}
1282 1740
1283#ifndef SA_RESTART 1741#ifndef SA_RESTART
1284# define SA_RESTART 0 1742# define SA_RESTART 0
1285#endif 1743#endif
1286 1744
1287void 1745void noinline
1288ev_signal_start (EV_P_ struct ev_signal *w) 1746ev_signal_start (EV_P_ ev_signal *w)
1289{ 1747{
1290#if EV_MULTIPLICITY 1748#if EV_MULTIPLICITY
1291 assert (("signal watchers are only supported in the default loop", loop == default_loop)); 1749 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1292#endif 1750#endif
1293 if (ev_is_active (w)) 1751 if (expect_false (ev_is_active (w)))
1294 return; 1752 return;
1295 1753
1296 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 1754 assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1297 1755
1756 {
1757#ifndef _WIN32
1758 sigset_t full, prev;
1759 sigfillset (&full);
1760 sigprocmask (SIG_SETMASK, &full, &prev);
1761#endif
1762
1763 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1764
1765#ifndef _WIN32
1766 sigprocmask (SIG_SETMASK, &prev, 0);
1767#endif
1768 }
1769
1298 ev_start (EV_A_ (W)w, 1); 1770 ev_start (EV_A_ (W)w, 1);
1299 array_needsize (signals, signalmax, w->signum, signals_init);
1300 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); 1771 wlist_add (&signals [w->signum - 1].head, (WL)w);
1301 1772
1302 if (!((WL)w)->next) 1773 if (!((WL)w)->next)
1303 { 1774 {
1775#if _WIN32
1776 signal (w->signum, sighandler);
1777#else
1304 struct sigaction sa; 1778 struct sigaction sa;
1305 sa.sa_handler = sighandler; 1779 sa.sa_handler = sighandler;
1306 sigfillset (&sa.sa_mask); 1780 sigfillset (&sa.sa_mask);
1307 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 1781 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1308 sigaction (w->signum, &sa, 0); 1782 sigaction (w->signum, &sa, 0);
1783#endif
1309 } 1784 }
1310} 1785}
1311 1786
1312void 1787void noinline
1313ev_signal_stop (EV_P_ struct ev_signal *w) 1788ev_signal_stop (EV_P_ ev_signal *w)
1314{ 1789{
1315 ev_clear_pending (EV_A_ (W)w); 1790 clear_pending (EV_A_ (W)w);
1316 if (!ev_is_active (w)) 1791 if (expect_false (!ev_is_active (w)))
1317 return; 1792 return;
1318 1793
1319 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); 1794 wlist_del (&signals [w->signum - 1].head, (WL)w);
1320 ev_stop (EV_A_ (W)w); 1795 ev_stop (EV_A_ (W)w);
1321 1796
1322 if (!signals [w->signum - 1].head) 1797 if (!signals [w->signum - 1].head)
1323 signal (w->signum, SIG_DFL); 1798 signal (w->signum, SIG_DFL);
1324} 1799}
1325 1800
1326void 1801void
1327ev_child_start (EV_P_ struct ev_child *w) 1802ev_child_start (EV_P_ ev_child *w)
1328{ 1803{
1329#if EV_MULTIPLICITY 1804#if EV_MULTIPLICITY
1330 assert (("child watchers are only supported in the default loop", loop == default_loop)); 1805 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1331#endif 1806#endif
1332 if (ev_is_active (w)) 1807 if (expect_false (ev_is_active (w)))
1333 return; 1808 return;
1334 1809
1335 ev_start (EV_A_ (W)w, 1); 1810 ev_start (EV_A_ (W)w, 1);
1336 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1811 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1337} 1812}
1338 1813
1339void 1814void
1340ev_child_stop (EV_P_ struct ev_child *w) 1815ev_child_stop (EV_P_ ev_child *w)
1341{ 1816{
1342 ev_clear_pending (EV_A_ (W)w); 1817 clear_pending (EV_A_ (W)w);
1343 if (ev_is_active (w)) 1818 if (expect_false (!ev_is_active (w)))
1344 return; 1819 return;
1345 1820
1346 wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1821 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1347 ev_stop (EV_A_ (W)w); 1822 ev_stop (EV_A_ (W)w);
1348} 1823}
1349 1824
1825#if EV_STAT_ENABLE
1826
1827# ifdef _WIN32
1828# undef lstat
1829# define lstat(a,b) _stati64 (a,b)
1830# endif
1831
1832#define DEF_STAT_INTERVAL 5.0074891
1833#define MIN_STAT_INTERVAL 0.1074891
1834
1835static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
1836
1837#if EV_USE_INOTIFY
1838# define EV_INOTIFY_BUFSIZE 8192
1839
1840static void noinline
1841infy_add (EV_P_ ev_stat *w)
1842{
1843 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);
1844
1845 if (w->wd < 0)
1846 {
1847 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
1848
1849 /* monitor some parent directory for speedup hints */
1850 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
1851 {
1852 char path [4096];
1853 strcpy (path, w->path);
1854
1855 do
1856 {
1857 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
1858 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
1859
1860 char *pend = strrchr (path, '/');
1861
1862 if (!pend)
1863 break; /* whoops, no '/', complain to your admin */
1864
1865 *pend = 0;
1866 w->wd = inotify_add_watch (fs_fd, path, mask);
1867 }
1868 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
1869 }
1870 }
1871 else
1872 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
1873
1874 if (w->wd >= 0)
1875 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
1876}
1877
1878static void noinline
1879infy_del (EV_P_ ev_stat *w)
1880{
1881 int slot;
1882 int wd = w->wd;
1883
1884 if (wd < 0)
1885 return;
1886
1887 w->wd = -2;
1888 slot = wd & (EV_INOTIFY_HASHSIZE - 1);
1889 wlist_del (&fs_hash [slot].head, (WL)w);
1890
1891 /* remove this watcher, if others are watching it, they will rearm */
1892 inotify_rm_watch (fs_fd, wd);
1893}
1894
1895static void noinline
1896infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
1897{
1898 if (slot < 0)
1899 /* overflow, need to check for all hahs slots */
1900 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
1901 infy_wd (EV_A_ slot, wd, ev);
1902 else
1903 {
1904 WL w_;
1905
1906 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
1907 {
1908 ev_stat *w = (ev_stat *)w_;
1909 w_ = w_->next; /* lets us remove this watcher and all before it */
1910
1911 if (w->wd == wd || wd == -1)
1912 {
1913 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
1914 {
1915 w->wd = -1;
1916 infy_add (EV_A_ w); /* re-add, no matter what */
1917 }
1918
1919 stat_timer_cb (EV_A_ &w->timer, 0);
1920 }
1921 }
1922 }
1923}
1924
1925static void
1926infy_cb (EV_P_ ev_io *w, int revents)
1927{
1928 char buf [EV_INOTIFY_BUFSIZE];
1929 struct inotify_event *ev = (struct inotify_event *)buf;
1930 int ofs;
1931 int len = read (fs_fd, buf, sizeof (buf));
1932
1933 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
1934 infy_wd (EV_A_ ev->wd, ev->wd, ev);
1935}
1936
1937void inline_size
1938infy_init (EV_P)
1939{
1940 if (fs_fd != -2)
1941 return;
1942
1943 fs_fd = inotify_init ();
1944
1945 if (fs_fd >= 0)
1946 {
1947 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
1948 ev_set_priority (&fs_w, EV_MAXPRI);
1949 ev_io_start (EV_A_ &fs_w);
1950 }
1951}
1952
1953void inline_size
1954infy_fork (EV_P)
1955{
1956 int slot;
1957
1958 if (fs_fd < 0)
1959 return;
1960
1961 close (fs_fd);
1962 fs_fd = inotify_init ();
1963
1964 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
1965 {
1966 WL w_ = fs_hash [slot].head;
1967 fs_hash [slot].head = 0;
1968
1969 while (w_)
1970 {
1971 ev_stat *w = (ev_stat *)w_;
1972 w_ = w_->next; /* lets us add this watcher */
1973
1974 w->wd = -1;
1975
1976 if (fs_fd >= 0)
1977 infy_add (EV_A_ w); /* re-add, no matter what */
1978 else
1979 ev_timer_start (EV_A_ &w->timer);
1980 }
1981
1982 }
1983}
1984
1985#endif
1986
1987void
1988ev_stat_stat (EV_P_ ev_stat *w)
1989{
1990 if (lstat (w->path, &w->attr) < 0)
1991 w->attr.st_nlink = 0;
1992 else if (!w->attr.st_nlink)
1993 w->attr.st_nlink = 1;
1994}
1995
1996static void noinline
1997stat_timer_cb (EV_P_ ev_timer *w_, int revents)
1998{
1999 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2000
2001 /* we copy this here each the time so that */
2002 /* prev has the old value when the callback gets invoked */
2003 w->prev = w->attr;
2004 ev_stat_stat (EV_A_ w);
2005
2006 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2007 if (
2008 w->prev.st_dev != w->attr.st_dev
2009 || w->prev.st_ino != w->attr.st_ino
2010 || w->prev.st_mode != w->attr.st_mode
2011 || w->prev.st_nlink != w->attr.st_nlink
2012 || w->prev.st_uid != w->attr.st_uid
2013 || w->prev.st_gid != w->attr.st_gid
2014 || w->prev.st_rdev != w->attr.st_rdev
2015 || w->prev.st_size != w->attr.st_size
2016 || w->prev.st_atime != w->attr.st_atime
2017 || w->prev.st_mtime != w->attr.st_mtime
2018 || w->prev.st_ctime != w->attr.st_ctime
2019 ) {
2020 #if EV_USE_INOTIFY
2021 infy_del (EV_A_ w);
2022 infy_add (EV_A_ w);
2023 ev_stat_stat (EV_A_ w); /* avoid race... */
2024 #endif
2025
2026 ev_feed_event (EV_A_ w, EV_STAT);
2027 }
2028}
2029
2030void
2031ev_stat_start (EV_P_ ev_stat *w)
2032{
2033 if (expect_false (ev_is_active (w)))
2034 return;
2035
2036 /* since we use memcmp, we need to clear any padding data etc. */
2037 memset (&w->prev, 0, sizeof (ev_statdata));
2038 memset (&w->attr, 0, sizeof (ev_statdata));
2039
2040 ev_stat_stat (EV_A_ w);
2041
2042 if (w->interval < MIN_STAT_INTERVAL)
2043 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2044
2045 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
2046 ev_set_priority (&w->timer, ev_priority (w));
2047
2048#if EV_USE_INOTIFY
2049 infy_init (EV_A);
2050
2051 if (fs_fd >= 0)
2052 infy_add (EV_A_ w);
2053 else
2054#endif
2055 ev_timer_start (EV_A_ &w->timer);
2056
2057 ev_start (EV_A_ (W)w, 1);
2058}
2059
2060void
2061ev_stat_stop (EV_P_ ev_stat *w)
2062{
2063 clear_pending (EV_A_ (W)w);
2064 if (expect_false (!ev_is_active (w)))
2065 return;
2066
2067#if EV_USE_INOTIFY
2068 infy_del (EV_A_ w);
2069#endif
2070 ev_timer_stop (EV_A_ &w->timer);
2071
2072 ev_stop (EV_A_ (W)w);
2073}
2074#endif
2075
2076#if EV_IDLE_ENABLE
2077void
2078ev_idle_start (EV_P_ ev_idle *w)
2079{
2080 if (expect_false (ev_is_active (w)))
2081 return;
2082
2083 pri_adjust (EV_A_ (W)w);
2084
2085 {
2086 int active = ++idlecnt [ABSPRI (w)];
2087
2088 ++idleall;
2089 ev_start (EV_A_ (W)w, active);
2090
2091 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2092 idles [ABSPRI (w)][active - 1] = w;
2093 }
2094}
2095
2096void
2097ev_idle_stop (EV_P_ ev_idle *w)
2098{
2099 clear_pending (EV_A_ (W)w);
2100 if (expect_false (!ev_is_active (w)))
2101 return;
2102
2103 {
2104 int active = ((W)w)->active;
2105
2106 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2107 ((W)idles [ABSPRI (w)][active - 1])->active = active;
2108
2109 ev_stop (EV_A_ (W)w);
2110 --idleall;
2111 }
2112}
2113#endif
2114
2115void
2116ev_prepare_start (EV_P_ ev_prepare *w)
2117{
2118 if (expect_false (ev_is_active (w)))
2119 return;
2120
2121 ev_start (EV_A_ (W)w, ++preparecnt);
2122 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2123 prepares [preparecnt - 1] = w;
2124}
2125
2126void
2127ev_prepare_stop (EV_P_ ev_prepare *w)
2128{
2129 clear_pending (EV_A_ (W)w);
2130 if (expect_false (!ev_is_active (w)))
2131 return;
2132
2133 {
2134 int active = ((W)w)->active;
2135 prepares [active - 1] = prepares [--preparecnt];
2136 ((W)prepares [active - 1])->active = active;
2137 }
2138
2139 ev_stop (EV_A_ (W)w);
2140}
2141
2142void
2143ev_check_start (EV_P_ ev_check *w)
2144{
2145 if (expect_false (ev_is_active (w)))
2146 return;
2147
2148 ev_start (EV_A_ (W)w, ++checkcnt);
2149 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2150 checks [checkcnt - 1] = w;
2151}
2152
2153void
2154ev_check_stop (EV_P_ ev_check *w)
2155{
2156 clear_pending (EV_A_ (W)w);
2157 if (expect_false (!ev_is_active (w)))
2158 return;
2159
2160 {
2161 int active = ((W)w)->active;
2162 checks [active - 1] = checks [--checkcnt];
2163 ((W)checks [active - 1])->active = active;
2164 }
2165
2166 ev_stop (EV_A_ (W)w);
2167}
2168
2169#if EV_EMBED_ENABLE
2170void noinline
2171ev_embed_sweep (EV_P_ ev_embed *w)
2172{
2173 ev_loop (w->loop, EVLOOP_NONBLOCK);
2174}
2175
2176static void
2177embed_cb (EV_P_ ev_io *io, int revents)
2178{
2179 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2180
2181 if (ev_cb (w))
2182 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2183 else
2184 ev_embed_sweep (loop, w);
2185}
2186
2187void
2188ev_embed_start (EV_P_ ev_embed *w)
2189{
2190 if (expect_false (ev_is_active (w)))
2191 return;
2192
2193 {
2194 struct ev_loop *loop = w->loop;
2195 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2196 ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
2197 }
2198
2199 ev_set_priority (&w->io, ev_priority (w));
2200 ev_io_start (EV_A_ &w->io);
2201
2202 ev_start (EV_A_ (W)w, 1);
2203}
2204
2205void
2206ev_embed_stop (EV_P_ ev_embed *w)
2207{
2208 clear_pending (EV_A_ (W)w);
2209 if (expect_false (!ev_is_active (w)))
2210 return;
2211
2212 ev_io_stop (EV_A_ &w->io);
2213
2214 ev_stop (EV_A_ (W)w);
2215}
2216#endif
2217
2218#if EV_FORK_ENABLE
2219void
2220ev_fork_start (EV_P_ ev_fork *w)
2221{
2222 if (expect_false (ev_is_active (w)))
2223 return;
2224
2225 ev_start (EV_A_ (W)w, ++forkcnt);
2226 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2227 forks [forkcnt - 1] = w;
2228}
2229
2230void
2231ev_fork_stop (EV_P_ ev_fork *w)
2232{
2233 clear_pending (EV_A_ (W)w);
2234 if (expect_false (!ev_is_active (w)))
2235 return;
2236
2237 {
2238 int active = ((W)w)->active;
2239 forks [active - 1] = forks [--forkcnt];
2240 ((W)forks [active - 1])->active = active;
2241 }
2242
2243 ev_stop (EV_A_ (W)w);
2244}
2245#endif
2246
1350/*****************************************************************************/ 2247/*****************************************************************************/
1351 2248
1352struct ev_once 2249struct ev_once
1353{ 2250{
1354 struct ev_io io; 2251 ev_io io;
1355 struct ev_timer to; 2252 ev_timer to;
1356 void (*cb)(int revents, void *arg); 2253 void (*cb)(int revents, void *arg);
1357 void *arg; 2254 void *arg;
1358}; 2255};
1359 2256
1360static void 2257static void
… …
1363 void (*cb)(int revents, void *arg) = once->cb; 2260 void (*cb)(int revents, void *arg) = once->cb;
1364 void *arg = once->arg; 2261 void *arg = once->arg;
1365 2262
1366 ev_io_stop (EV_A_ &once->io); 2263 ev_io_stop (EV_A_ &once->io);
1367 ev_timer_stop (EV_A_ &once->to); 2264 ev_timer_stop (EV_A_ &once->to);
1368 free (once); 2265 ev_free (once);
1369 2266
1370 cb (revents, arg); 2267 cb (revents, arg);
1371} 2268}
1372 2269
1373static void 2270static void
1374once_cb_io (EV_P_ struct ev_io *w, int revents) 2271once_cb_io (EV_P_ ev_io *w, int revents)
1375{ 2272{
1376 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 2273 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1377} 2274}
1378 2275
1379static void 2276static void
1380once_cb_to (EV_P_ struct ev_timer *w, int revents) 2277once_cb_to (EV_P_ ev_timer *w, int revents)
1381{ 2278{
1382 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 2279 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1383} 2280}
1384 2281
1385void 2282void
1386ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 2283ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1387{ 2284{
1388 struct ev_once *once = malloc (sizeof (struct ev_once)); 2285 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1389 2286
1390 if (!once) 2287 if (expect_false (!once))
2288 {
1391 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 2289 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1392 else 2290 return;
1393 { 2291 }
2292
1394 once->cb = cb; 2293 once->cb = cb;
1395 once->arg = arg; 2294 once->arg = arg;
1396 2295
1397 ev_watcher_init (&once->io, once_cb_io); 2296 ev_init (&once->io, once_cb_io);
1398 if (fd >= 0) 2297 if (fd >= 0)
1399 { 2298 {
1400 ev_io_set (&once->io, fd, events); 2299 ev_io_set (&once->io, fd, events);
1401 ev_io_start (EV_A_ &once->io); 2300 ev_io_start (EV_A_ &once->io);
1402 } 2301 }
1403 2302
1404 ev_watcher_init (&once->to, once_cb_to); 2303 ev_init (&once->to, once_cb_to);
1405 if (timeout >= 0.) 2304 if (timeout >= 0.)
1406 { 2305 {
1407 ev_timer_set (&once->to, timeout, 0.); 2306 ev_timer_set (&once->to, timeout, 0.);
1408 ev_timer_start (EV_A_ &once->to); 2307 ev_timer_start (EV_A_ &once->to);
1409 }
1410 } 2308 }
1411} 2309}
1412 2310
2311#ifdef __cplusplus
2312}
2313#endif
2314

Diff Legend

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