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Comparing libev/ev.c (file contents):
Revision 1.68 by root, Mon Nov 5 20:19:00 2007 UTC vs.
Revision 1.184 by root, Wed Dec 12 05:30:52 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
150#if WIN32 268#ifdef _WIN32
151/* note: the comment below could not be substantiated, but what would I care */ 269# include "ev_win32.c"
152/* MSDN says this is required to handle SIGFPE */
153volatile double SIGFPE_REQ = 0.0f;
154#endif 270#endif
271
272/*****************************************************************************/
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)
155 321
156/*****************************************************************************/ 322/*****************************************************************************/
157 323
158typedef struct 324typedef struct
159{ 325{
160 WL head; 326 WL head;
161 unsigned char events; 327 unsigned char events;
162 unsigned char reify; 328 unsigned char reify;
329#if EV_SELECT_IS_WINSOCKET
330 SOCKET handle;
331#endif
163} ANFD; 332} ANFD;
164 333
165typedef struct 334typedef struct
166{ 335{
167 W w; 336 W w;
168 int events; 337 int events;
169} ANPENDING; 338} ANPENDING;
170 339
340#if EV_USE_INOTIFY
341typedef struct
342{
343 WL head;
344} ANFS;
345#endif
346
171#if EV_MULTIPLICITY 347#if EV_MULTIPLICITY
172 348
173struct ev_loop 349 struct ev_loop
174{ 350 {
351 ev_tstamp ev_rt_now;
352 #define ev_rt_now ((loop)->ev_rt_now)
175# define VAR(name,decl) decl; 353 #define VAR(name,decl) decl;
176# include "ev_vars.h" 354 #include "ev_vars.h"
177};
178# undef VAR 355 #undef VAR
356 };
179# 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;
180 361
181#else 362#else
182 363
364 ev_tstamp ev_rt_now;
183# define VAR(name,decl) static decl; 365 #define VAR(name,decl) static decl;
184# include "ev_vars.h" 366 #include "ev_vars.h"
185# undef VAR 367 #undef VAR
368
369 static int ev_default_loop_ptr;
186 370
187#endif 371#endif
188 372
189/*****************************************************************************/ 373/*****************************************************************************/
190 374
191inline ev_tstamp 375ev_tstamp
192ev_time (void) 376ev_time (void)
193{ 377{
194#if EV_USE_REALTIME 378#if EV_USE_REALTIME
195 struct timespec ts; 379 struct timespec ts;
196 clock_gettime (CLOCK_REALTIME, &ts); 380 clock_gettime (CLOCK_REALTIME, &ts);
… …
200 gettimeofday (&tv, 0); 384 gettimeofday (&tv, 0);
201 return tv.tv_sec + tv.tv_usec * 1e-6; 385 return tv.tv_sec + tv.tv_usec * 1e-6;
202#endif 386#endif
203} 387}
204 388
205inline ev_tstamp 389ev_tstamp inline_size
206get_clock (void) 390get_clock (void)
207{ 391{
208#if EV_USE_MONOTONIC 392#if EV_USE_MONOTONIC
209 if (expect_true (have_monotonic)) 393 if (expect_true (have_monotonic))
210 { 394 {
… …
215#endif 399#endif
216 400
217 return ev_time (); 401 return ev_time ();
218} 402}
219 403
404#if EV_MULTIPLICITY
220ev_tstamp 405ev_tstamp
221ev_now (EV_P) 406ev_now (EV_P)
222{ 407{
223 return rt_now; 408 return ev_rt_now;
224} 409}
410#endif
225 411
226#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;
227 416
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
228#define array_needsize(base,cur,cnt,init) \ 440#define array_needsize(type,base,cur,cnt,init) \
229 if (expect_false ((cnt) > cur)) \ 441 if (expect_false ((cnt) > (cur))) \
230 { \ 442 { \
231 int newcnt = cur; \ 443 int ocur_ = (cur); \
232 do \ 444 (base) = (type *)array_realloc \
233 { \ 445 (sizeof (type), (base), &(cur), (cnt)); \
234 newcnt = array_roundsize (base, newcnt << 1); \ 446 init ((base) + (ocur_), (cur) - ocur_); \
235 } \
236 while ((cnt) > newcnt); \
237 \
238 base = realloc (base, sizeof (*base) * (newcnt)); \
239 init (base + cur, newcnt - cur); \
240 cur = newcnt; \
241 } 447 }
242 448
449#if 0
243#define array_slim(stem) \ 450#define array_slim(type,stem) \
244 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 451 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
245 { \ 452 { \
246 stem ## max = array_roundsize (stem ## cnt >> 1); \ 453 stem ## max = array_roundsize (stem ## cnt >> 1); \
247 base = realloc (base, sizeof (*base) * (stem ## max)); \ 454 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
248 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 455 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
249 } 456 }
457#endif
250 458
251#define array_free(stem, idx) \ 459#define array_free(stem, idx) \
252 free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 460 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
253 461
254/*****************************************************************************/ 462/*****************************************************************************/
255 463
256static 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
257anfds_init (ANFD *base, int count) 493anfds_init (ANFD *base, int count)
258{ 494{
259 while (count--) 495 while (count--)
260 { 496 {
261 base->head = 0; 497 base->head = 0;
… …
264 500
265 ++base; 501 ++base;
266 } 502 }
267} 503}
268 504
269static void 505void inline_speed
270event (EV_P_ W w, int events)
271{
272 if (w->pending)
273 {
274 pendings [ABSPRI (w)][w->pending - 1].events |= events;
275 return;
276 }
277
278 w->pending = ++pendingcnt [ABSPRI (w)];
279 array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], );
280 pendings [ABSPRI (w)][w->pending - 1].w = w;
281 pendings [ABSPRI (w)][w->pending - 1].events = events;
282}
283
284static void
285queue_events (EV_P_ W *events, int eventcnt, int type)
286{
287 int i;
288
289 for (i = 0; i < eventcnt; ++i)
290 event (EV_A_ events [i], type);
291}
292
293static void
294fd_event (EV_P_ int fd, int events) 506fd_event (EV_P_ int fd, int revents)
295{ 507{
296 ANFD *anfd = anfds + fd; 508 ANFD *anfd = anfds + fd;
297 struct ev_io *w; 509 ev_io *w;
298 510
299 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)
300 { 512 {
301 int ev = w->events & events; 513 int ev = w->events & revents;
302 514
303 if (ev) 515 if (ev)
304 event (EV_A_ (W)w, ev); 516 ev_feed_event (EV_A_ (W)w, ev);
305 } 517 }
306} 518}
307 519
308/*****************************************************************************/ 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}
309 526
310static void 527void inline_size
311fd_reify (EV_P) 528fd_reify (EV_P)
312{ 529{
313 int i; 530 int i;
314 531
315 for (i = 0; i < fdchangecnt; ++i) 532 for (i = 0; i < fdchangecnt; ++i)
316 { 533 {
317 int fd = fdchanges [i]; 534 int fd = fdchanges [i];
318 ANFD *anfd = anfds + fd; 535 ANFD *anfd = anfds + fd;
319 struct ev_io *w; 536 ev_io *w;
320 537
321 int events = 0; 538 unsigned char events = 0;
322 539
323 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)
324 events |= w->events; 541 events |= (unsigned char)w->events;
325 542
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
552 {
553 unsigned char o_events = anfd->events;
554 unsigned char o_reify = anfd->reify;
555
326 anfd->reify = 0; 556 anfd->reify = 0;
327
328 method_modify (EV_A_ fd, anfd->events, events);
329 anfd->events = events; 557 anfd->events = events;
558
559 if (o_events != events || o_reify & EV_IOFDSET)
560 backend_modify (EV_A_ fd, o_events, events);
561 }
330 } 562 }
331 563
332 fdchangecnt = 0; 564 fdchangecnt = 0;
333} 565}
334 566
335static void 567void inline_size
336fd_change (EV_P_ int fd) 568fd_change (EV_P_ int fd, int flags)
337{ 569{
338 if (anfds [fd].reify || fdchangecnt < 0) 570 unsigned char reify = anfds [fd].reify;
339 return;
340
341 anfds [fd].reify = 1; 571 anfds [fd].reify |= flags;
342 572
573 if (expect_true (!reify))
574 {
343 ++fdchangecnt; 575 ++fdchangecnt;
344 array_needsize (fdchanges, fdchangemax, fdchangecnt, ); 576 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
345 fdchanges [fdchangecnt - 1] = fd; 577 fdchanges [fdchangecnt - 1] = fd;
578 }
346} 579}
347 580
348static void 581void inline_speed
349fd_kill (EV_P_ int fd) 582fd_kill (EV_P_ int fd)
350{ 583{
351 struct ev_io *w; 584 ev_io *w;
352 585
353 while ((w = (struct ev_io *)anfds [fd].head)) 586 while ((w = (ev_io *)anfds [fd].head))
354 { 587 {
355 ev_io_stop (EV_A_ w); 588 ev_io_stop (EV_A_ w);
356 event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 589 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
357 } 590 }
591}
592
593int inline_size
594fd_valid (int fd)
595{
596#ifdef _WIN32
597 return _get_osfhandle (fd) != -1;
598#else
599 return fcntl (fd, F_GETFD) != -1;
600#endif
358} 601}
359 602
360/* called on EBADF to verify fds */ 603/* called on EBADF to verify fds */
361static void 604static void noinline
362fd_ebadf (EV_P) 605fd_ebadf (EV_P)
363{ 606{
364 int fd; 607 int fd;
365 608
366 for (fd = 0; fd < anfdmax; ++fd) 609 for (fd = 0; fd < anfdmax; ++fd)
367 if (anfds [fd].events) 610 if (anfds [fd].events)
368 if (fcntl (fd, F_GETFD) == -1 && errno == EBADF) 611 if (!fd_valid (fd) == -1 && errno == EBADF)
369 fd_kill (EV_A_ fd); 612 fd_kill (EV_A_ fd);
370} 613}
371 614
372/* called on ENOMEM in select/poll to kill some fds and retry */ 615/* called on ENOMEM in select/poll to kill some fds and retry */
373static void 616static void noinline
374fd_enomem (EV_P) 617fd_enomem (EV_P)
375{ 618{
376 int fd; 619 int fd;
377 620
378 for (fd = anfdmax; fd--; ) 621 for (fd = anfdmax; fd--; )
… …
381 fd_kill (EV_A_ fd); 624 fd_kill (EV_A_ fd);
382 return; 625 return;
383 } 626 }
384} 627}
385 628
386/* susually called after fork if method needs to re-arm all fds from scratch */ 629/* usually called after fork if backend needs to re-arm all fds from scratch */
387static void 630static void noinline
388fd_rearm_all (EV_P) 631fd_rearm_all (EV_P)
389{ 632{
390 int fd; 633 int fd;
391 634
392 /* this should be highly optimised to not do anything but set a flag */
393 for (fd = 0; fd < anfdmax; ++fd) 635 for (fd = 0; fd < anfdmax; ++fd)
394 if (anfds [fd].events) 636 if (anfds [fd].events)
395 { 637 {
396 anfds [fd].events = 0; 638 anfds [fd].events = 0;
397 fd_change (EV_A_ fd); 639 fd_change (EV_A_ fd, EV_IOFDSET | 1);
398 } 640 }
399} 641}
400 642
401/*****************************************************************************/ 643/*****************************************************************************/
402 644
403static void 645void inline_speed
404upheap (WT *heap, int k) 646upheap (WT *heap, int k)
405{ 647{
406 WT w = heap [k]; 648 WT w = heap [k];
407 649
408 while (k && heap [k >> 1]->at > w->at) 650 while (k)
409 { 651 {
652 int p = (k - 1) >> 1;
653
654 if (heap [p]->at <= w->at)
655 break;
656
410 heap [k] = heap [k >> 1]; 657 heap [k] = heap [p];
411 ((W)heap [k])->active = k + 1; 658 ((W)heap [k])->active = k + 1;
412 k >>= 1; 659 k = p;
413 } 660 }
414 661
415 heap [k] = w; 662 heap [k] = w;
416 ((W)heap [k])->active = k + 1; 663 ((W)heap [k])->active = k + 1;
417
418} 664}
419 665
420static void 666void inline_speed
421downheap (WT *heap, int N, int k) 667downheap (WT *heap, int N, int k)
422{ 668{
423 WT w = heap [k]; 669 WT w = heap [k];
424 670
425 while (k < (N >> 1)) 671 for (;;)
426 { 672 {
427 int j = k << 1; 673 int c = (k << 1) + 1;
428 674
429 if (j + 1 < N && heap [j]->at > heap [j + 1]->at) 675 if (c >= N)
430 ++j;
431
432 if (w->at <= heap [j]->at)
433 break; 676 break;
434 677
678 c += c + 1 < N && heap [c]->at > heap [c + 1]->at
679 ? 1 : 0;
680
681 if (w->at <= heap [c]->at)
682 break;
683
435 heap [k] = heap [j]; 684 heap [k] = heap [c];
436 ((W)heap [k])->active = k + 1; 685 ((W)heap [k])->active = k + 1;
686
437 k = j; 687 k = c;
438 } 688 }
439 689
440 heap [k] = w; 690 heap [k] = w;
441 ((W)heap [k])->active = k + 1; 691 ((W)heap [k])->active = k + 1;
692}
693
694void inline_size
695adjustheap (WT *heap, int N, int k)
696{
697 upheap (heap, k);
698 downheap (heap, N, k);
442} 699}
443 700
444/*****************************************************************************/ 701/*****************************************************************************/
445 702
446typedef struct 703typedef struct
… …
452static ANSIG *signals; 709static ANSIG *signals;
453static int signalmax; 710static int signalmax;
454 711
455static int sigpipe [2]; 712static int sigpipe [2];
456static sig_atomic_t volatile gotsig; 713static sig_atomic_t volatile gotsig;
457static struct ev_io sigev; 714static ev_io sigev;
458 715
459static void 716void inline_size
460signals_init (ANSIG *base, int count) 717signals_init (ANSIG *base, int count)
461{ 718{
462 while (count--) 719 while (count--)
463 { 720 {
464 base->head = 0; 721 base->head = 0;
… …
469} 726}
470 727
471static void 728static void
472sighandler (int signum) 729sighandler (int signum)
473{ 730{
474#if WIN32 731#if _WIN32
475 signal (signum, sighandler); 732 signal (signum, sighandler);
476#endif 733#endif
477 734
478 signals [signum - 1].gotsig = 1; 735 signals [signum - 1].gotsig = 1;
479 736
… …
484 write (sigpipe [1], &signum, 1); 741 write (sigpipe [1], &signum, 1);
485 errno = old_errno; 742 errno = old_errno;
486 } 743 }
487} 744}
488 745
746void noinline
747ev_feed_signal_event (EV_P_ int signum)
748{
749 WL w;
750
751#if EV_MULTIPLICITY
752 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
753#endif
754
755 --signum;
756
757 if (signum < 0 || signum >= signalmax)
758 return;
759
760 signals [signum].gotsig = 0;
761
762 for (w = signals [signum].head; w; w = w->next)
763 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
764}
765
489static void 766static void
490sigcb (EV_P_ struct ev_io *iow, int revents) 767sigcb (EV_P_ ev_io *iow, int revents)
491{ 768{
492 WL w;
493 int signum; 769 int signum;
494 770
495 read (sigpipe [0], &revents, 1); 771 read (sigpipe [0], &revents, 1);
496 gotsig = 0; 772 gotsig = 0;
497 773
498 for (signum = signalmax; signum--; ) 774 for (signum = signalmax; signum--; )
499 if (signals [signum].gotsig) 775 if (signals [signum].gotsig)
500 { 776 ev_feed_signal_event (EV_A_ signum + 1);
501 signals [signum].gotsig = 0;
502
503 for (w = signals [signum].head; w; w = w->next)
504 event (EV_A_ (W)w, EV_SIGNAL);
505 }
506} 777}
507 778
508static void 779void inline_speed
780fd_intern (int fd)
781{
782#ifdef _WIN32
783 int arg = 1;
784 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
785#else
786 fcntl (fd, F_SETFD, FD_CLOEXEC);
787 fcntl (fd, F_SETFL, O_NONBLOCK);
788#endif
789}
790
791static void noinline
509siginit (EV_P) 792siginit (EV_P)
510{ 793{
511#ifndef WIN32 794 fd_intern (sigpipe [0]);
512 fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC); 795 fd_intern (sigpipe [1]);
513 fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
514
515 /* rather than sort out wether we really need nb, set it */
516 fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
517 fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
518#endif
519 796
520 ev_io_set (&sigev, sigpipe [0], EV_READ); 797 ev_io_set (&sigev, sigpipe [0], EV_READ);
521 ev_io_start (EV_A_ &sigev); 798 ev_io_start (EV_A_ &sigev);
522 ev_unref (EV_A); /* child watcher should not keep loop alive */ 799 ev_unref (EV_A); /* child watcher should not keep loop alive */
523} 800}
524 801
525/*****************************************************************************/ 802/*****************************************************************************/
526 803
804static WL childs [EV_PID_HASHSIZE];
805
527#ifndef WIN32 806#ifndef _WIN32
528 807
529static struct ev_child *childs [PID_HASHSIZE];
530static struct ev_signal childev; 808static ev_signal childev;
809
810void inline_speed
811child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
812{
813 ev_child *w;
814
815 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
816 if (w->pid == pid || !w->pid)
817 {
818 ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */
819 w->rpid = pid;
820 w->rstatus = status;
821 ev_feed_event (EV_A_ (W)w, EV_CHILD);
822 }
823}
531 824
532#ifndef WCONTINUED 825#ifndef WCONTINUED
533# define WCONTINUED 0 826# define WCONTINUED 0
534#endif 827#endif
535 828
536static void 829static void
537child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
538{
539 struct ev_child *w;
540
541 for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
542 if (w->pid == pid || !w->pid)
543 {
544 ev_priority (w) = ev_priority (sw); /* need to do it *now* */
545 w->rpid = pid;
546 w->rstatus = status;
547 event (EV_A_ (W)w, EV_CHILD);
548 }
549}
550
551static void
552childcb (EV_P_ struct ev_signal *sw, int revents) 830childcb (EV_P_ ev_signal *sw, int revents)
553{ 831{
554 int pid, status; 832 int pid, status;
555 833
834 /* some systems define WCONTINUED but then fail to support it (linux 2.4) */
556 if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) 835 if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
557 { 836 if (!WCONTINUED
837 || errno != EINVAL
838 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
839 return;
840
558 /* make sure we are called again until all childs have been reaped */ 841 /* make sure we are called again until all childs have been reaped */
842 /* we need to do it this way so that the callback gets called before we continue */
559 event (EV_A_ (W)sw, EV_SIGNAL); 843 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
560 844
561 child_reap (EV_A_ sw, pid, pid, status); 845 child_reap (EV_A_ sw, pid, pid, status);
846 if (EV_PID_HASHSIZE > 1)
562 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */ 847 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
563 }
564} 848}
565 849
566#endif 850#endif
567 851
568/*****************************************************************************/ 852/*****************************************************************************/
569 853
854#if EV_USE_PORT
855# include "ev_port.c"
856#endif
570#if EV_USE_KQUEUE 857#if EV_USE_KQUEUE
571# include "ev_kqueue.c" 858# include "ev_kqueue.c"
572#endif 859#endif
573#if EV_USE_EPOLL 860#if EV_USE_EPOLL
574# include "ev_epoll.c" 861# include "ev_epoll.c"
… …
591{ 878{
592 return EV_VERSION_MINOR; 879 return EV_VERSION_MINOR;
593} 880}
594 881
595/* return true if we are running with elevated privileges and should ignore env variables */ 882/* return true if we are running with elevated privileges and should ignore env variables */
596static int 883int inline_size
597enable_secure (void) 884enable_secure (void)
598{ 885{
599#ifdef WIN32 886#ifdef _WIN32
600 return 0; 887 return 0;
601#else 888#else
602 return getuid () != geteuid () 889 return getuid () != geteuid ()
603 || getgid () != getegid (); 890 || getgid () != getegid ();
604#endif 891#endif
605} 892}
606 893
607int 894unsigned int
608ev_method (EV_P) 895ev_supported_backends (void)
609{ 896{
610 return method; 897 unsigned int flags = 0;
611}
612 898
613static void 899 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
614loop_init (EV_P_ int methods) 900 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
901 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
902 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
903 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
904
905 return flags;
906}
907
908unsigned int
909ev_recommended_backends (void)
615{ 910{
616 if (!method) 911 unsigned int flags = ev_supported_backends ();
912
913#ifndef __NetBSD__
914 /* kqueue is borked on everything but netbsd apparently */
915 /* it usually doesn't work correctly on anything but sockets and pipes */
916 flags &= ~EVBACKEND_KQUEUE;
917#endif
918#ifdef __APPLE__
919 // flags &= ~EVBACKEND_KQUEUE; for documentation
920 flags &= ~EVBACKEND_POLL;
921#endif
922
923 return flags;
924}
925
926unsigned int
927ev_embeddable_backends (void)
928{
929 return EVBACKEND_EPOLL
930 | EVBACKEND_KQUEUE
931 | EVBACKEND_PORT;
932}
933
934unsigned int
935ev_backend (EV_P)
936{
937 return backend;
938}
939
940unsigned int
941ev_loop_count (EV_P)
942{
943 return loop_count;
944}
945
946static void noinline
947loop_init (EV_P_ unsigned int flags)
948{
949 if (!backend)
617 { 950 {
618#if EV_USE_MONOTONIC 951#if EV_USE_MONOTONIC
619 { 952 {
620 struct timespec ts; 953 struct timespec ts;
621 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 954 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
622 have_monotonic = 1; 955 have_monotonic = 1;
623 } 956 }
624#endif 957#endif
625 958
626 rt_now = ev_time (); 959 ev_rt_now = ev_time ();
627 mn_now = get_clock (); 960 mn_now = get_clock ();
628 now_floor = mn_now; 961 now_floor = mn_now;
629 rtmn_diff = rt_now - mn_now; 962 rtmn_diff = ev_rt_now - mn_now;
630 963
631 if (methods == EVMETHOD_AUTO) 964 /* pid check not overridable via env */
632 if (!enable_secure () && getenv ("LIBEV_METHODS")) 965#ifndef _WIN32
966 if (flags & EVFLAG_FORKCHECK)
967 curpid = getpid ();
968#endif
969
970 if (!(flags & EVFLAG_NOENV)
971 && !enable_secure ()
972 && getenv ("LIBEV_FLAGS"))
633 methods = atoi (getenv ("LIBEV_METHODS")); 973 flags = atoi (getenv ("LIBEV_FLAGS"));
634 else
635 methods = EVMETHOD_ANY;
636 974
637 method = 0; 975 if (!(flags & 0x0000ffffUL))
976 flags |= ev_recommended_backends ();
977
978 backend = 0;
979 backend_fd = -1;
638#if EV_USE_WIN32 980#if EV_USE_INOTIFY
639 if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods); 981 fs_fd = -2;
982#endif
983
984#if EV_USE_PORT
985 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
640#endif 986#endif
641#if EV_USE_KQUEUE 987#if EV_USE_KQUEUE
642 if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods); 988 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
643#endif 989#endif
644#if EV_USE_EPOLL 990#if EV_USE_EPOLL
645 if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods); 991 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
646#endif 992#endif
647#if EV_USE_POLL 993#if EV_USE_POLL
648 if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods); 994 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
649#endif 995#endif
650#if EV_USE_SELECT 996#if EV_USE_SELECT
651 if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods); 997 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
652#endif 998#endif
653 }
654}
655 999
656void 1000 ev_init (&sigev, sigcb);
1001 ev_set_priority (&sigev, EV_MAXPRI);
1002 }
1003}
1004
1005static void noinline
657loop_destroy (EV_P) 1006loop_destroy (EV_P)
658{ 1007{
659 int i; 1008 int i;
660 1009
661#if EV_USE_WIN32 1010#if EV_USE_INOTIFY
662 if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A); 1011 if (fs_fd >= 0)
1012 close (fs_fd);
1013#endif
1014
1015 if (backend_fd >= 0)
1016 close (backend_fd);
1017
1018#if EV_USE_PORT
1019 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
663#endif 1020#endif
664#if EV_USE_KQUEUE 1021#if EV_USE_KQUEUE
665 if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A); 1022 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
666#endif 1023#endif
667#if EV_USE_EPOLL 1024#if EV_USE_EPOLL
668 if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A); 1025 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
669#endif 1026#endif
670#if EV_USE_POLL 1027#if EV_USE_POLL
671 if (method == EVMETHOD_POLL ) poll_destroy (EV_A); 1028 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
672#endif 1029#endif
673#if EV_USE_SELECT 1030#if EV_USE_SELECT
674 if (method == EVMETHOD_SELECT) select_destroy (EV_A); 1031 if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
675#endif 1032#endif
676 1033
677 for (i = NUMPRI; i--; ) 1034 for (i = NUMPRI; i--; )
1035 {
678 array_free (pending, [i]); 1036 array_free (pending, [i]);
1037#if EV_IDLE_ENABLE
1038 array_free (idle, [i]);
1039#endif
1040 }
679 1041
1042 /* have to use the microsoft-never-gets-it-right macro */
680 array_free (fdchange, ); 1043 array_free (fdchange, EMPTY);
681 array_free (timer, ); 1044 array_free (timer, EMPTY);
1045#if EV_PERIODIC_ENABLE
682 array_free (periodic, ); 1046 array_free (periodic, EMPTY);
683 array_free (idle, ); 1047#endif
684 array_free (prepare, ); 1048 array_free (prepare, EMPTY);
685 array_free (check, ); 1049 array_free (check, EMPTY);
686 1050
687 method = 0; 1051 backend = 0;
688 /*TODO*/
689} 1052}
690 1053
691void 1054void inline_size infy_fork (EV_P);
1055
1056void inline_size
692loop_fork (EV_P) 1057loop_fork (EV_P)
693{ 1058{
694 /*TODO*/ 1059#if EV_USE_PORT
1060 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1061#endif
1062#if EV_USE_KQUEUE
1063 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
1064#endif
695#if EV_USE_EPOLL 1065#if EV_USE_EPOLL
696 if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A); 1066 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
697#endif 1067#endif
698#if EV_USE_KQUEUE 1068#if EV_USE_INOTIFY
699 if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A); 1069 infy_fork (EV_A);
700#endif 1070#endif
1071
1072 if (ev_is_active (&sigev))
1073 {
1074 /* default loop */
1075
1076 ev_ref (EV_A);
1077 ev_io_stop (EV_A_ &sigev);
1078 close (sigpipe [0]);
1079 close (sigpipe [1]);
1080
1081 while (pipe (sigpipe))
1082 syserr ("(libev) error creating pipe");
1083
1084 siginit (EV_A);
1085 }
1086
1087 postfork = 0;
701} 1088}
702 1089
703#if EV_MULTIPLICITY 1090#if EV_MULTIPLICITY
704struct ev_loop * 1091struct ev_loop *
705ev_loop_new (int methods) 1092ev_loop_new (unsigned int flags)
706{ 1093{
707 struct ev_loop *loop = (struct ev_loop *)calloc (1, sizeof (struct ev_loop)); 1094 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
708 1095
1096 memset (loop, 0, sizeof (struct ev_loop));
1097
709 loop_init (EV_A_ methods); 1098 loop_init (EV_A_ flags);
710 1099
711 if (ev_method (EV_A)) 1100 if (ev_backend (EV_A))
712 return loop; 1101 return loop;
713 1102
714 return 0; 1103 return 0;
715} 1104}
716 1105
717void 1106void
718ev_loop_destroy (EV_P) 1107ev_loop_destroy (EV_P)
719{ 1108{
720 loop_destroy (EV_A); 1109 loop_destroy (EV_A);
721 free (loop); 1110 ev_free (loop);
722} 1111}
723 1112
724void 1113void
725ev_loop_fork (EV_P) 1114ev_loop_fork (EV_P)
726{ 1115{
727 loop_fork (EV_A); 1116 postfork = 1;
728} 1117}
729 1118
730#endif 1119#endif
731 1120
732#if EV_MULTIPLICITY 1121#if EV_MULTIPLICITY
733struct ev_loop default_loop_struct;
734static struct ev_loop *default_loop;
735
736struct ev_loop * 1122struct ev_loop *
1123ev_default_loop_init (unsigned int flags)
737#else 1124#else
738static int default_loop;
739
740int 1125int
1126ev_default_loop (unsigned int flags)
741#endif 1127#endif
742ev_default_loop (int methods)
743{ 1128{
744 if (sigpipe [0] == sigpipe [1]) 1129 if (sigpipe [0] == sigpipe [1])
745 if (pipe (sigpipe)) 1130 if (pipe (sigpipe))
746 return 0; 1131 return 0;
747 1132
748 if (!default_loop) 1133 if (!ev_default_loop_ptr)
749 { 1134 {
750#if EV_MULTIPLICITY 1135#if EV_MULTIPLICITY
751 struct ev_loop *loop = default_loop = &default_loop_struct; 1136 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
752#else 1137#else
753 default_loop = 1; 1138 ev_default_loop_ptr = 1;
754#endif 1139#endif
755 1140
756 loop_init (EV_A_ methods); 1141 loop_init (EV_A_ flags);
757 1142
758 if (ev_method (EV_A)) 1143 if (ev_backend (EV_A))
759 { 1144 {
760 ev_watcher_init (&sigev, sigcb);
761 ev_set_priority (&sigev, EV_MAXPRI);
762 siginit (EV_A); 1145 siginit (EV_A);
763 1146
764#ifndef WIN32 1147#ifndef _WIN32
765 ev_signal_init (&childev, childcb, SIGCHLD); 1148 ev_signal_init (&childev, childcb, SIGCHLD);
766 ev_set_priority (&childev, EV_MAXPRI); 1149 ev_set_priority (&childev, EV_MAXPRI);
767 ev_signal_start (EV_A_ &childev); 1150 ev_signal_start (EV_A_ &childev);
768 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1151 ev_unref (EV_A); /* child watcher should not keep loop alive */
769#endif 1152#endif
770 } 1153 }
771 else 1154 else
772 default_loop = 0; 1155 ev_default_loop_ptr = 0;
773 } 1156 }
774 1157
775 return default_loop; 1158 return ev_default_loop_ptr;
776} 1159}
777 1160
778void 1161void
779ev_default_destroy (void) 1162ev_default_destroy (void)
780{ 1163{
781#if EV_MULTIPLICITY 1164#if EV_MULTIPLICITY
782 struct ev_loop *loop = default_loop; 1165 struct ev_loop *loop = ev_default_loop_ptr;
783#endif 1166#endif
784 1167
1168#ifndef _WIN32
785 ev_ref (EV_A); /* child watcher */ 1169 ev_ref (EV_A); /* child watcher */
786 ev_signal_stop (EV_A_ &childev); 1170 ev_signal_stop (EV_A_ &childev);
1171#endif
787 1172
788 ev_ref (EV_A); /* signal watcher */ 1173 ev_ref (EV_A); /* signal watcher */
789 ev_io_stop (EV_A_ &sigev); 1174 ev_io_stop (EV_A_ &sigev);
790 1175
791 close (sigpipe [0]); sigpipe [0] = 0; 1176 close (sigpipe [0]); sigpipe [0] = 0;
… …
796 1181
797void 1182void
798ev_default_fork (void) 1183ev_default_fork (void)
799{ 1184{
800#if EV_MULTIPLICITY 1185#if EV_MULTIPLICITY
801 struct ev_loop *loop = default_loop; 1186 struct ev_loop *loop = ev_default_loop_ptr;
802#endif 1187#endif
803 1188
804 loop_fork (EV_A); 1189 if (backend)
805 1190 postfork = 1;
806 ev_io_stop (EV_A_ &sigev);
807 close (sigpipe [0]);
808 close (sigpipe [1]);
809 pipe (sigpipe);
810
811 ev_ref (EV_A); /* signal watcher */
812 siginit (EV_A);
813} 1191}
814 1192
815/*****************************************************************************/ 1193/*****************************************************************************/
816 1194
817static void 1195void
1196ev_invoke (EV_P_ void *w, int revents)
1197{
1198 EV_CB_INVOKE ((W)w, revents);
1199}
1200
1201void inline_speed
818call_pending (EV_P) 1202call_pending (EV_P)
819{ 1203{
820 int pri; 1204 int pri;
821 1205
822 for (pri = NUMPRI; pri--; ) 1206 for (pri = NUMPRI; pri--; )
823 while (pendingcnt [pri]) 1207 while (pendingcnt [pri])
824 { 1208 {
825 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 1209 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
826 1210
827 if (p->w) 1211 if (expect_true (p->w))
828 { 1212 {
1213 /*assert (("non-pending watcher on pending list", p->w->pending));*/
1214
829 p->w->pending = 0; 1215 p->w->pending = 0;
830 p->w->cb (EV_A_ p->w, p->events); 1216 EV_CB_INVOKE (p->w, p->events);
831 } 1217 }
832 } 1218 }
833} 1219}
834 1220
835static void 1221void inline_size
836timers_reify (EV_P) 1222timers_reify (EV_P)
837{ 1223{
838 while (timercnt && ((WT)timers [0])->at <= mn_now) 1224 while (timercnt && ((WT)timers [0])->at <= mn_now)
839 { 1225 {
840 struct ev_timer *w = timers [0]; 1226 ev_timer *w = (ev_timer *)timers [0];
841 1227
842 assert (("inactive timer on timer heap detected", ev_is_active (w))); 1228 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
843 1229
844 /* first reschedule or stop timer */ 1230 /* first reschedule or stop timer */
845 if (w->repeat) 1231 if (w->repeat)
846 { 1232 {
847 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 1233 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1234
848 ((WT)w)->at = mn_now + w->repeat; 1235 ((WT)w)->at += w->repeat;
1236 if (((WT)w)->at < mn_now)
1237 ((WT)w)->at = mn_now;
1238
849 downheap ((WT *)timers, timercnt, 0); 1239 downheap (timers, timercnt, 0);
850 } 1240 }
851 else 1241 else
852 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ 1242 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
853 1243
854 event (EV_A_ (W)w, EV_TIMEOUT); 1244 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
855 } 1245 }
856} 1246}
857 1247
858static void 1248#if EV_PERIODIC_ENABLE
1249void inline_size
859periodics_reify (EV_P) 1250periodics_reify (EV_P)
860{ 1251{
861 while (periodiccnt && ((WT)periodics [0])->at <= rt_now) 1252 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
862 { 1253 {
863 struct ev_periodic *w = periodics [0]; 1254 ev_periodic *w = (ev_periodic *)periodics [0];
864 1255
865 assert (("inactive timer on periodic heap detected", ev_is_active (w))); 1256 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
866 1257
867 /* first reschedule or stop timer */ 1258 /* first reschedule or stop timer */
868 if (w->interval) 1259 if (w->reschedule_cb)
869 { 1260 {
1261 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1262 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1263 downheap (periodics, periodiccnt, 0);
1264 }
1265 else if (w->interval)
1266 {
870 ((WT)w)->at += floor ((rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval; 1267 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1268 if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
871 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > rt_now)); 1269 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
872 downheap ((WT *)periodics, periodiccnt, 0); 1270 downheap (periodics, periodiccnt, 0);
873 } 1271 }
874 else 1272 else
875 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 1273 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
876 1274
877 event (EV_A_ (W)w, EV_PERIODIC); 1275 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
878 } 1276 }
879} 1277}
880 1278
881static void 1279static void noinline
882periodics_reschedule (EV_P) 1280periodics_reschedule (EV_P)
883{ 1281{
884 int i; 1282 int i;
885 1283
886 /* adjust periodics after time jump */ 1284 /* adjust periodics after time jump */
887 for (i = 0; i < periodiccnt; ++i) 1285 for (i = 0; i < periodiccnt; ++i)
888 { 1286 {
889 struct ev_periodic *w = periodics [i]; 1287 ev_periodic *w = (ev_periodic *)periodics [i];
890 1288
1289 if (w->reschedule_cb)
1290 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
891 if (w->interval) 1291 else if (w->interval)
1292 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1293 }
1294
1295 /* now rebuild the heap */
1296 for (i = periodiccnt >> 1; i--; )
1297 downheap (periodics, periodiccnt, i);
1298}
1299#endif
1300
1301#if EV_IDLE_ENABLE
1302void inline_size
1303idle_reify (EV_P)
1304{
1305 if (expect_false (idleall))
1306 {
1307 int pri;
1308
1309 for (pri = NUMPRI; pri--; )
892 { 1310 {
893 ev_tstamp diff = ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval; 1311 if (pendingcnt [pri])
1312 break;
894 1313
895 if (fabs (diff) >= 1e-4) 1314 if (idlecnt [pri])
896 { 1315 {
897 ev_periodic_stop (EV_A_ w); 1316 queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
898 ev_periodic_start (EV_A_ w); 1317 break;
899
900 i = 0; /* restart loop, inefficient, but time jumps should be rare */
901 } 1318 }
902 } 1319 }
903 } 1320 }
904} 1321}
1322#endif
905 1323
906inline int 1324void inline_speed
907time_update_monotonic (EV_P) 1325time_update (EV_P_ ev_tstamp max_block)
908{
909 mn_now = get_clock ();
910
911 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
912 {
913 rt_now = rtmn_diff + mn_now;
914 return 0;
915 }
916 else
917 {
918 now_floor = mn_now;
919 rt_now = ev_time ();
920 return 1;
921 }
922}
923
924static void
925time_update (EV_P)
926{ 1326{
927 int i; 1327 int i;
928 1328
929#if EV_USE_MONOTONIC 1329#if EV_USE_MONOTONIC
930 if (expect_true (have_monotonic)) 1330 if (expect_true (have_monotonic))
931 { 1331 {
932 if (time_update_monotonic (EV_A)) 1332 ev_tstamp odiff = rtmn_diff;
1333
1334 mn_now = get_clock ();
1335
1336 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
1337 /* interpolate in the meantime */
1338 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
933 { 1339 {
934 ev_tstamp odiff = rtmn_diff; 1340 ev_rt_now = rtmn_diff + mn_now;
1341 return;
1342 }
935 1343
1344 now_floor = mn_now;
1345 ev_rt_now = ev_time ();
1346
936 for (i = 4; --i; ) /* loop a few times, before making important decisions */ 1347 /* loop a few times, before making important decisions.
1348 * on the choice of "4": one iteration isn't enough,
1349 * in case we get preempted during the calls to
1350 * ev_time and get_clock. a second call is almost guaranteed
1351 * to succeed in that case, though. and looping a few more times
1352 * doesn't hurt either as we only do this on time-jumps or
1353 * in the unlikely event of having been preempted here.
1354 */
1355 for (i = 4; --i; )
937 { 1356 {
938 rtmn_diff = rt_now - mn_now; 1357 rtmn_diff = ev_rt_now - mn_now;
939 1358
940 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) 1359 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
941 return; /* all is well */ 1360 return; /* all is well */
942 1361
943 rt_now = ev_time (); 1362 ev_rt_now = ev_time ();
944 mn_now = get_clock (); 1363 mn_now = get_clock ();
945 now_floor = mn_now; 1364 now_floor = mn_now;
946 } 1365 }
947 1366
1367# if EV_PERIODIC_ENABLE
1368 periodics_reschedule (EV_A);
1369# endif
1370 /* no timer adjustment, as the monotonic clock doesn't jump */
1371 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1372 }
1373 else
1374#endif
1375 {
1376 ev_rt_now = ev_time ();
1377
1378 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1379 {
1380#if EV_PERIODIC_ENABLE
948 periodics_reschedule (EV_A); 1381 periodics_reschedule (EV_A);
949 /* no timer adjustment, as the monotonic clock doesn't jump */ 1382#endif
950 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */ 1383 /* adjust timers. this is easy, as the offset is the same for all of them */
1384 for (i = 0; i < timercnt; ++i)
1385 ((WT)timers [i])->at += ev_rt_now - mn_now;
951 } 1386 }
952 }
953 else
954#endif
955 {
956 rt_now = ev_time ();
957 1387
958 if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
959 {
960 periodics_reschedule (EV_A);
961
962 /* adjust timers. this is easy, as the offset is the same for all */
963 for (i = 0; i < timercnt; ++i)
964 ((WT)timers [i])->at += rt_now - mn_now;
965 }
966
967 mn_now = rt_now; 1388 mn_now = ev_rt_now;
968 } 1389 }
969} 1390}
970 1391
971void 1392void
972ev_ref (EV_P) 1393ev_ref (EV_P)
… …
983static int loop_done; 1404static int loop_done;
984 1405
985void 1406void
986ev_loop (EV_P_ int flags) 1407ev_loop (EV_P_ int flags)
987{ 1408{
988 double block;
989 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0; 1409 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
1410 ? EVUNLOOP_ONE
1411 : EVUNLOOP_CANCEL;
1412
1413 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
990 1414
991 do 1415 do
992 { 1416 {
1417#ifndef _WIN32
1418 if (expect_false (curpid)) /* penalise the forking check even more */
1419 if (expect_false (getpid () != curpid))
1420 {
1421 curpid = getpid ();
1422 postfork = 1;
1423 }
1424#endif
1425
1426#if EV_FORK_ENABLE
1427 /* we might have forked, so queue fork handlers */
1428 if (expect_false (postfork))
1429 if (forkcnt)
1430 {
1431 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1432 call_pending (EV_A);
1433 }
1434#endif
1435
993 /* queue check watchers (and execute them) */ 1436 /* queue prepare watchers (and execute them) */
994 if (expect_false (preparecnt)) 1437 if (expect_false (preparecnt))
995 { 1438 {
996 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 1439 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
997 call_pending (EV_A); 1440 call_pending (EV_A);
998 } 1441 }
999 1442
1443 if (expect_false (!activecnt))
1444 break;
1445
1446 /* we might have forked, so reify kernel state if necessary */
1447 if (expect_false (postfork))
1448 loop_fork (EV_A);
1449
1000 /* update fd-related kernel structures */ 1450 /* update fd-related kernel structures */
1001 fd_reify (EV_A); 1451 fd_reify (EV_A);
1002 1452
1003 /* calculate blocking time */ 1453 /* calculate blocking time */
1454 {
1455 ev_tstamp block;
1004 1456
1005 /* we only need this for !monotonic clockor timers, but as we basically 1457 if (expect_false (flags & EVLOOP_NONBLOCK || idleall || !activecnt))
1006 always have timers, we just calculate it always */ 1458 block = 0.; /* do not block at all */
1007#if EV_USE_MONOTONIC
1008 if (expect_true (have_monotonic))
1009 time_update_monotonic (EV_A);
1010 else 1459 else
1011#endif
1012 { 1460 {
1013 rt_now = ev_time (); 1461 /* update time to cancel out callback processing overhead */
1014 mn_now = rt_now; 1462 time_update (EV_A_ 1e100);
1015 }
1016 1463
1017 if (flags & EVLOOP_NONBLOCK || idlecnt)
1018 block = 0.;
1019 else
1020 {
1021 block = MAX_BLOCKTIME; 1464 block = MAX_BLOCKTIME;
1022 1465
1023 if (timercnt) 1466 if (timercnt)
1024 { 1467 {
1025 ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge; 1468 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1026 if (block > to) block = to; 1469 if (block > to) block = to;
1027 } 1470 }
1028 1471
1472#if EV_PERIODIC_ENABLE
1029 if (periodiccnt) 1473 if (periodiccnt)
1030 { 1474 {
1031 ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge; 1475 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1032 if (block > to) block = to; 1476 if (block > to) block = to;
1033 } 1477 }
1478#endif
1034 1479
1035 if (block < 0.) block = 0.; 1480 if (expect_false (block < 0.)) block = 0.;
1036 } 1481 }
1037 1482
1483 ++loop_count;
1038 method_poll (EV_A_ block); 1484 backend_poll (EV_A_ block);
1039 1485
1040 /* update rt_now, do magic */ 1486 /* update ev_rt_now, do magic */
1041 time_update (EV_A); 1487 time_update (EV_A_ block);
1488 }
1042 1489
1043 /* queue pending timers and reschedule them */ 1490 /* queue pending timers and reschedule them */
1044 timers_reify (EV_A); /* relative timers called last */ 1491 timers_reify (EV_A); /* relative timers called last */
1492#if EV_PERIODIC_ENABLE
1045 periodics_reify (EV_A); /* absolute timers called first */ 1493 periodics_reify (EV_A); /* absolute timers called first */
1494#endif
1046 1495
1496#if EV_IDLE_ENABLE
1047 /* queue idle watchers unless io or timers are pending */ 1497 /* queue idle watchers unless other events are pending */
1048 if (!pendingcnt) 1498 idle_reify (EV_A);
1049 queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); 1499#endif
1050 1500
1051 /* queue check watchers, to be executed first */ 1501 /* queue check watchers, to be executed first */
1052 if (checkcnt) 1502 if (expect_false (checkcnt))
1053 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 1503 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1054 1504
1055 call_pending (EV_A); 1505 call_pending (EV_A);
1506
1056 } 1507 }
1057 while (activecnt && !loop_done); 1508 while (expect_true (activecnt && !loop_done));
1058 1509
1059 if (loop_done != 2) 1510 if (loop_done == EVUNLOOP_ONE)
1060 loop_done = 0; 1511 loop_done = EVUNLOOP_CANCEL;
1061} 1512}
1062 1513
1063void 1514void
1064ev_unloop (EV_P_ int how) 1515ev_unloop (EV_P_ int how)
1065{ 1516{
1066 loop_done = how; 1517 loop_done = how;
1067} 1518}
1068 1519
1069/*****************************************************************************/ 1520/*****************************************************************************/
1070 1521
1071inline void 1522void inline_size
1072wlist_add (WL *head, WL elem) 1523wlist_add (WL *head, WL elem)
1073{ 1524{
1074 elem->next = *head; 1525 elem->next = *head;
1075 *head = elem; 1526 *head = elem;
1076} 1527}
1077 1528
1078inline void 1529void inline_size
1079wlist_del (WL *head, WL elem) 1530wlist_del (WL *head, WL elem)
1080{ 1531{
1081 while (*head) 1532 while (*head)
1082 { 1533 {
1083 if (*head == elem) 1534 if (*head == elem)
… …
1088 1539
1089 head = &(*head)->next; 1540 head = &(*head)->next;
1090 } 1541 }
1091} 1542}
1092 1543
1093inline void 1544void inline_speed
1094ev_clear_pending (EV_P_ W w) 1545clear_pending (EV_P_ W w)
1095{ 1546{
1096 if (w->pending) 1547 if (w->pending)
1097 { 1548 {
1098 pendings [ABSPRI (w)][w->pending - 1].w = 0; 1549 pendings [ABSPRI (w)][w->pending - 1].w = 0;
1099 w->pending = 0; 1550 w->pending = 0;
1100 } 1551 }
1101} 1552}
1102 1553
1103inline void 1554int
1555ev_clear_pending (EV_P_ void *w)
1556{
1557 W w_ = (W)w;
1558 int pending = w_->pending;
1559
1560 if (expect_true (pending))
1561 {
1562 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
1563 w_->pending = 0;
1564 p->w = 0;
1565 return p->events;
1566 }
1567 else
1568 return 0;
1569}
1570
1571void inline_size
1572pri_adjust (EV_P_ W w)
1573{
1574 int pri = w->priority;
1575 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1576 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1577 w->priority = pri;
1578}
1579
1580void inline_speed
1104ev_start (EV_P_ W w, int active) 1581ev_start (EV_P_ W w, int active)
1105{ 1582{
1106 if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; 1583 pri_adjust (EV_A_ w);
1107 if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1108
1109 w->active = active; 1584 w->active = active;
1110 ev_ref (EV_A); 1585 ev_ref (EV_A);
1111} 1586}
1112 1587
1113inline void 1588void inline_size
1114ev_stop (EV_P_ W w) 1589ev_stop (EV_P_ W w)
1115{ 1590{
1116 ev_unref (EV_A); 1591 ev_unref (EV_A);
1117 w->active = 0; 1592 w->active = 0;
1118} 1593}
1119 1594
1120/*****************************************************************************/ 1595/*****************************************************************************/
1121 1596
1122void 1597void noinline
1123ev_io_start (EV_P_ struct ev_io *w) 1598ev_io_start (EV_P_ ev_io *w)
1124{ 1599{
1125 int fd = w->fd; 1600 int fd = w->fd;
1126 1601
1127 if (ev_is_active (w)) 1602 if (expect_false (ev_is_active (w)))
1128 return; 1603 return;
1129 1604
1130 assert (("ev_io_start called with negative fd", fd >= 0)); 1605 assert (("ev_io_start called with negative fd", fd >= 0));
1131 1606
1132 ev_start (EV_A_ (W)w, 1); 1607 ev_start (EV_A_ (W)w, 1);
1133 array_needsize (anfds, anfdmax, fd + 1, anfds_init); 1608 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1134 wlist_add ((WL *)&anfds[fd].head, (WL)w); 1609 wlist_add (&anfds[fd].head, (WL)w);
1135 1610
1136 fd_change (EV_A_ fd); 1611 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);
1612 w->events &= ~EV_IOFDSET;
1137} 1613}
1138 1614
1139void 1615void noinline
1140ev_io_stop (EV_P_ struct ev_io *w) 1616ev_io_stop (EV_P_ ev_io *w)
1141{ 1617{
1142 ev_clear_pending (EV_A_ (W)w); 1618 clear_pending (EV_A_ (W)w);
1143 if (!ev_is_active (w)) 1619 if (expect_false (!ev_is_active (w)))
1144 return; 1620 return;
1145 1621
1622 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1623
1146 wlist_del ((WL *)&anfds[w->fd].head, (WL)w); 1624 wlist_del (&anfds[w->fd].head, (WL)w);
1147 ev_stop (EV_A_ (W)w); 1625 ev_stop (EV_A_ (W)w);
1148 1626
1149 fd_change (EV_A_ w->fd); 1627 fd_change (EV_A_ w->fd, 1);
1150} 1628}
1151 1629
1152void 1630void noinline
1153ev_timer_start (EV_P_ struct ev_timer *w) 1631ev_timer_start (EV_P_ ev_timer *w)
1154{ 1632{
1155 if (ev_is_active (w)) 1633 if (expect_false (ev_is_active (w)))
1156 return; 1634 return;
1157 1635
1158 ((WT)w)->at += mn_now; 1636 ((WT)w)->at += mn_now;
1159 1637
1160 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 1638 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1161 1639
1162 ev_start (EV_A_ (W)w, ++timercnt); 1640 ev_start (EV_A_ (W)w, ++timercnt);
1163 array_needsize (timers, timermax, timercnt, ); 1641 array_needsize (WT, timers, timermax, timercnt, EMPTY2);
1164 timers [timercnt - 1] = w; 1642 timers [timercnt - 1] = (WT)w;
1165 upheap ((WT *)timers, timercnt - 1); 1643 upheap (timers, timercnt - 1);
1166 1644
1167 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 1645 /*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
1168} 1646}
1169 1647
1170void 1648void noinline
1171ev_timer_stop (EV_P_ struct ev_timer *w) 1649ev_timer_stop (EV_P_ ev_timer *w)
1172{ 1650{
1173 ev_clear_pending (EV_A_ (W)w); 1651 clear_pending (EV_A_ (W)w);
1174 if (!ev_is_active (w)) 1652 if (expect_false (!ev_is_active (w)))
1175 return; 1653 return;
1176 1654
1177 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 1655 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w));
1178 1656
1179 if (((W)w)->active < timercnt--) 1657 {
1658 int active = ((W)w)->active;
1659
1660 if (expect_true (--active < --timercnt))
1180 { 1661 {
1181 timers [((W)w)->active - 1] = timers [timercnt]; 1662 timers [active] = timers [timercnt];
1182 downheap ((WT *)timers, timercnt, ((W)w)->active - 1); 1663 adjustheap (timers, timercnt, active);
1183 } 1664 }
1665 }
1184 1666
1185 ((WT)w)->at = w->repeat; 1667 ((WT)w)->at -= mn_now;
1186 1668
1187 ev_stop (EV_A_ (W)w); 1669 ev_stop (EV_A_ (W)w);
1188} 1670}
1189 1671
1190void 1672void noinline
1191ev_timer_again (EV_P_ struct ev_timer *w) 1673ev_timer_again (EV_P_ ev_timer *w)
1192{ 1674{
1193 if (ev_is_active (w)) 1675 if (ev_is_active (w))
1194 { 1676 {
1195 if (w->repeat) 1677 if (w->repeat)
1196 { 1678 {
1197 ((WT)w)->at = mn_now + w->repeat; 1679 ((WT)w)->at = mn_now + w->repeat;
1198 downheap ((WT *)timers, timercnt, ((W)w)->active - 1); 1680 adjustheap (timers, timercnt, ((W)w)->active - 1);
1199 } 1681 }
1200 else 1682 else
1201 ev_timer_stop (EV_A_ w); 1683 ev_timer_stop (EV_A_ w);
1202 } 1684 }
1203 else if (w->repeat) 1685 else if (w->repeat)
1686 {
1687 w->at = w->repeat;
1204 ev_timer_start (EV_A_ w); 1688 ev_timer_start (EV_A_ w);
1689 }
1205} 1690}
1206 1691
1207void 1692#if EV_PERIODIC_ENABLE
1693void noinline
1208ev_periodic_start (EV_P_ struct ev_periodic *w) 1694ev_periodic_start (EV_P_ ev_periodic *w)
1209{ 1695{
1210 if (ev_is_active (w)) 1696 if (expect_false (ev_is_active (w)))
1211 return; 1697 return;
1212 1698
1699 if (w->reschedule_cb)
1700 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1701 else if (w->interval)
1702 {
1213 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 1703 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1214
1215 /* this formula differs from the one in periodic_reify because we do not always round up */ 1704 /* this formula differs from the one in periodic_reify because we do not always round up */
1216 if (w->interval)
1217 ((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval; 1705 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1706 }
1707 else
1708 ((WT)w)->at = w->offset;
1218 1709
1219 ev_start (EV_A_ (W)w, ++periodiccnt); 1710 ev_start (EV_A_ (W)w, ++periodiccnt);
1220 array_needsize (periodics, periodicmax, periodiccnt, ); 1711 array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2);
1221 periodics [periodiccnt - 1] = w; 1712 periodics [periodiccnt - 1] = (WT)w;
1222 upheap ((WT *)periodics, periodiccnt - 1); 1713 upheap (periodics, periodiccnt - 1);
1223 1714
1224 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1715 /*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
1225} 1716}
1226 1717
1227void 1718void noinline
1228ev_periodic_stop (EV_P_ struct ev_periodic *w) 1719ev_periodic_stop (EV_P_ ev_periodic *w)
1229{ 1720{
1230 ev_clear_pending (EV_A_ (W)w); 1721 clear_pending (EV_A_ (W)w);
1231 if (!ev_is_active (w)) 1722 if (expect_false (!ev_is_active (w)))
1232 return; 1723 return;
1233 1724
1234 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1725 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w));
1235 1726
1236 if (((W)w)->active < periodiccnt--) 1727 {
1728 int active = ((W)w)->active;
1729
1730 if (expect_true (--active < --periodiccnt))
1237 { 1731 {
1238 periodics [((W)w)->active - 1] = periodics [periodiccnt]; 1732 periodics [active] = periodics [periodiccnt];
1239 downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1); 1733 adjustheap (periodics, periodiccnt, active);
1240 } 1734 }
1735 }
1241 1736
1242 ev_stop (EV_A_ (W)w); 1737 ev_stop (EV_A_ (W)w);
1243} 1738}
1244 1739
1245void 1740void noinline
1246ev_idle_start (EV_P_ struct ev_idle *w) 1741ev_periodic_again (EV_P_ ev_periodic *w)
1247{ 1742{
1248 if (ev_is_active (w)) 1743 /* TODO: use adjustheap and recalculation */
1249 return;
1250
1251 ev_start (EV_A_ (W)w, ++idlecnt);
1252 array_needsize (idles, idlemax, idlecnt, );
1253 idles [idlecnt - 1] = w;
1254}
1255
1256void
1257ev_idle_stop (EV_P_ struct ev_idle *w)
1258{
1259 ev_clear_pending (EV_A_ (W)w);
1260 if (ev_is_active (w))
1261 return;
1262
1263 idles [((W)w)->active - 1] = idles [--idlecnt];
1264 ev_stop (EV_A_ (W)w); 1744 ev_periodic_stop (EV_A_ w);
1745 ev_periodic_start (EV_A_ w);
1265} 1746}
1266 1747#endif
1267void
1268ev_prepare_start (EV_P_ struct ev_prepare *w)
1269{
1270 if (ev_is_active (w))
1271 return;
1272
1273 ev_start (EV_A_ (W)w, ++preparecnt);
1274 array_needsize (prepares, preparemax, preparecnt, );
1275 prepares [preparecnt - 1] = w;
1276}
1277
1278void
1279ev_prepare_stop (EV_P_ struct ev_prepare *w)
1280{
1281 ev_clear_pending (EV_A_ (W)w);
1282 if (ev_is_active (w))
1283 return;
1284
1285 prepares [((W)w)->active - 1] = prepares [--preparecnt];
1286 ev_stop (EV_A_ (W)w);
1287}
1288
1289void
1290ev_check_start (EV_P_ struct ev_check *w)
1291{
1292 if (ev_is_active (w))
1293 return;
1294
1295 ev_start (EV_A_ (W)w, ++checkcnt);
1296 array_needsize (checks, checkmax, checkcnt, );
1297 checks [checkcnt - 1] = w;
1298}
1299
1300void
1301ev_check_stop (EV_P_ struct ev_check *w)
1302{
1303 ev_clear_pending (EV_A_ (W)w);
1304 if (ev_is_active (w))
1305 return;
1306
1307 checks [((W)w)->active - 1] = checks [--checkcnt];
1308 ev_stop (EV_A_ (W)w);
1309}
1310 1748
1311#ifndef SA_RESTART 1749#ifndef SA_RESTART
1312# define SA_RESTART 0 1750# define SA_RESTART 0
1313#endif 1751#endif
1314 1752
1315void 1753void noinline
1316ev_signal_start (EV_P_ struct ev_signal *w) 1754ev_signal_start (EV_P_ ev_signal *w)
1317{ 1755{
1318#if EV_MULTIPLICITY 1756#if EV_MULTIPLICITY
1319 assert (("signal watchers are only supported in the default loop", loop == default_loop)); 1757 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1320#endif 1758#endif
1321 if (ev_is_active (w)) 1759 if (expect_false (ev_is_active (w)))
1322 return; 1760 return;
1323 1761
1324 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 1762 assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1325 1763
1764 {
1765#ifndef _WIN32
1766 sigset_t full, prev;
1767 sigfillset (&full);
1768 sigprocmask (SIG_SETMASK, &full, &prev);
1769#endif
1770
1771 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1772
1773#ifndef _WIN32
1774 sigprocmask (SIG_SETMASK, &prev, 0);
1775#endif
1776 }
1777
1326 ev_start (EV_A_ (W)w, 1); 1778 ev_start (EV_A_ (W)w, 1);
1327 array_needsize (signals, signalmax, w->signum, signals_init);
1328 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); 1779 wlist_add (&signals [w->signum - 1].head, (WL)w);
1329 1780
1330 if (!((WL)w)->next) 1781 if (!((WL)w)->next)
1331 { 1782 {
1332#if WIN32 1783#if _WIN32
1333 signal (w->signum, sighandler); 1784 signal (w->signum, sighandler);
1334#else 1785#else
1335 struct sigaction sa; 1786 struct sigaction sa;
1336 sa.sa_handler = sighandler; 1787 sa.sa_handler = sighandler;
1337 sigfillset (&sa.sa_mask); 1788 sigfillset (&sa.sa_mask);
… …
1339 sigaction (w->signum, &sa, 0); 1790 sigaction (w->signum, &sa, 0);
1340#endif 1791#endif
1341 } 1792 }
1342} 1793}
1343 1794
1344void 1795void noinline
1345ev_signal_stop (EV_P_ struct ev_signal *w) 1796ev_signal_stop (EV_P_ ev_signal *w)
1346{ 1797{
1347 ev_clear_pending (EV_A_ (W)w); 1798 clear_pending (EV_A_ (W)w);
1348 if (!ev_is_active (w)) 1799 if (expect_false (!ev_is_active (w)))
1349 return; 1800 return;
1350 1801
1351 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); 1802 wlist_del (&signals [w->signum - 1].head, (WL)w);
1352 ev_stop (EV_A_ (W)w); 1803 ev_stop (EV_A_ (W)w);
1353 1804
1354 if (!signals [w->signum - 1].head) 1805 if (!signals [w->signum - 1].head)
1355 signal (w->signum, SIG_DFL); 1806 signal (w->signum, SIG_DFL);
1356} 1807}
1357 1808
1358void 1809void
1359ev_child_start (EV_P_ struct ev_child *w) 1810ev_child_start (EV_P_ ev_child *w)
1360{ 1811{
1361#if EV_MULTIPLICITY 1812#if EV_MULTIPLICITY
1362 assert (("child watchers are only supported in the default loop", loop == default_loop)); 1813 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1363#endif 1814#endif
1364 if (ev_is_active (w)) 1815 if (expect_false (ev_is_active (w)))
1365 return; 1816 return;
1366 1817
1367 ev_start (EV_A_ (W)w, 1); 1818 ev_start (EV_A_ (W)w, 1);
1368 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1819 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1369} 1820}
1370 1821
1371void 1822void
1372ev_child_stop (EV_P_ struct ev_child *w) 1823ev_child_stop (EV_P_ ev_child *w)
1373{ 1824{
1374 ev_clear_pending (EV_A_ (W)w); 1825 clear_pending (EV_A_ (W)w);
1375 if (ev_is_active (w)) 1826 if (expect_false (!ev_is_active (w)))
1376 return; 1827 return;
1377 1828
1378 wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1829 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1379 ev_stop (EV_A_ (W)w); 1830 ev_stop (EV_A_ (W)w);
1380} 1831}
1381 1832
1833#if EV_STAT_ENABLE
1834
1835# ifdef _WIN32
1836# undef lstat
1837# define lstat(a,b) _stati64 (a,b)
1838# endif
1839
1840#define DEF_STAT_INTERVAL 5.0074891
1841#define MIN_STAT_INTERVAL 0.1074891
1842
1843static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
1844
1845#if EV_USE_INOTIFY
1846# define EV_INOTIFY_BUFSIZE 8192
1847
1848static void noinline
1849infy_add (EV_P_ ev_stat *w)
1850{
1851 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);
1852
1853 if (w->wd < 0)
1854 {
1855 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
1856
1857 /* monitor some parent directory for speedup hints */
1858 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
1859 {
1860 char path [4096];
1861 strcpy (path, w->path);
1862
1863 do
1864 {
1865 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
1866 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
1867
1868 char *pend = strrchr (path, '/');
1869
1870 if (!pend)
1871 break; /* whoops, no '/', complain to your admin */
1872
1873 *pend = 0;
1874 w->wd = inotify_add_watch (fs_fd, path, mask);
1875 }
1876 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
1877 }
1878 }
1879 else
1880 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
1881
1882 if (w->wd >= 0)
1883 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
1884}
1885
1886static void noinline
1887infy_del (EV_P_ ev_stat *w)
1888{
1889 int slot;
1890 int wd = w->wd;
1891
1892 if (wd < 0)
1893 return;
1894
1895 w->wd = -2;
1896 slot = wd & (EV_INOTIFY_HASHSIZE - 1);
1897 wlist_del (&fs_hash [slot].head, (WL)w);
1898
1899 /* remove this watcher, if others are watching it, they will rearm */
1900 inotify_rm_watch (fs_fd, wd);
1901}
1902
1903static void noinline
1904infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
1905{
1906 if (slot < 0)
1907 /* overflow, need to check for all hahs slots */
1908 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
1909 infy_wd (EV_A_ slot, wd, ev);
1910 else
1911 {
1912 WL w_;
1913
1914 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
1915 {
1916 ev_stat *w = (ev_stat *)w_;
1917 w_ = w_->next; /* lets us remove this watcher and all before it */
1918
1919 if (w->wd == wd || wd == -1)
1920 {
1921 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
1922 {
1923 w->wd = -1;
1924 infy_add (EV_A_ w); /* re-add, no matter what */
1925 }
1926
1927 stat_timer_cb (EV_A_ &w->timer, 0);
1928 }
1929 }
1930 }
1931}
1932
1933static void
1934infy_cb (EV_P_ ev_io *w, int revents)
1935{
1936 char buf [EV_INOTIFY_BUFSIZE];
1937 struct inotify_event *ev = (struct inotify_event *)buf;
1938 int ofs;
1939 int len = read (fs_fd, buf, sizeof (buf));
1940
1941 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
1942 infy_wd (EV_A_ ev->wd, ev->wd, ev);
1943}
1944
1945void inline_size
1946infy_init (EV_P)
1947{
1948 if (fs_fd != -2)
1949 return;
1950
1951 fs_fd = inotify_init ();
1952
1953 if (fs_fd >= 0)
1954 {
1955 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
1956 ev_set_priority (&fs_w, EV_MAXPRI);
1957 ev_io_start (EV_A_ &fs_w);
1958 }
1959}
1960
1961void inline_size
1962infy_fork (EV_P)
1963{
1964 int slot;
1965
1966 if (fs_fd < 0)
1967 return;
1968
1969 close (fs_fd);
1970 fs_fd = inotify_init ();
1971
1972 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
1973 {
1974 WL w_ = fs_hash [slot].head;
1975 fs_hash [slot].head = 0;
1976
1977 while (w_)
1978 {
1979 ev_stat *w = (ev_stat *)w_;
1980 w_ = w_->next; /* lets us add this watcher */
1981
1982 w->wd = -1;
1983
1984 if (fs_fd >= 0)
1985 infy_add (EV_A_ w); /* re-add, no matter what */
1986 else
1987 ev_timer_start (EV_A_ &w->timer);
1988 }
1989
1990 }
1991}
1992
1993#endif
1994
1995void
1996ev_stat_stat (EV_P_ ev_stat *w)
1997{
1998 if (lstat (w->path, &w->attr) < 0)
1999 w->attr.st_nlink = 0;
2000 else if (!w->attr.st_nlink)
2001 w->attr.st_nlink = 1;
2002}
2003
2004static void noinline
2005stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2006{
2007 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2008
2009 /* we copy this here each the time so that */
2010 /* prev has the old value when the callback gets invoked */
2011 w->prev = w->attr;
2012 ev_stat_stat (EV_A_ w);
2013
2014 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2015 if (
2016 w->prev.st_dev != w->attr.st_dev
2017 || w->prev.st_ino != w->attr.st_ino
2018 || w->prev.st_mode != w->attr.st_mode
2019 || w->prev.st_nlink != w->attr.st_nlink
2020 || w->prev.st_uid != w->attr.st_uid
2021 || w->prev.st_gid != w->attr.st_gid
2022 || w->prev.st_rdev != w->attr.st_rdev
2023 || w->prev.st_size != w->attr.st_size
2024 || w->prev.st_atime != w->attr.st_atime
2025 || w->prev.st_mtime != w->attr.st_mtime
2026 || w->prev.st_ctime != w->attr.st_ctime
2027 ) {
2028 #if EV_USE_INOTIFY
2029 infy_del (EV_A_ w);
2030 infy_add (EV_A_ w);
2031 ev_stat_stat (EV_A_ w); /* avoid race... */
2032 #endif
2033
2034 ev_feed_event (EV_A_ w, EV_STAT);
2035 }
2036}
2037
2038void
2039ev_stat_start (EV_P_ ev_stat *w)
2040{
2041 if (expect_false (ev_is_active (w)))
2042 return;
2043
2044 /* since we use memcmp, we need to clear any padding data etc. */
2045 memset (&w->prev, 0, sizeof (ev_statdata));
2046 memset (&w->attr, 0, sizeof (ev_statdata));
2047
2048 ev_stat_stat (EV_A_ w);
2049
2050 if (w->interval < MIN_STAT_INTERVAL)
2051 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2052
2053 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
2054 ev_set_priority (&w->timer, ev_priority (w));
2055
2056#if EV_USE_INOTIFY
2057 infy_init (EV_A);
2058
2059 if (fs_fd >= 0)
2060 infy_add (EV_A_ w);
2061 else
2062#endif
2063 ev_timer_start (EV_A_ &w->timer);
2064
2065 ev_start (EV_A_ (W)w, 1);
2066}
2067
2068void
2069ev_stat_stop (EV_P_ ev_stat *w)
2070{
2071 clear_pending (EV_A_ (W)w);
2072 if (expect_false (!ev_is_active (w)))
2073 return;
2074
2075#if EV_USE_INOTIFY
2076 infy_del (EV_A_ w);
2077#endif
2078 ev_timer_stop (EV_A_ &w->timer);
2079
2080 ev_stop (EV_A_ (W)w);
2081}
2082#endif
2083
2084#if EV_IDLE_ENABLE
2085void
2086ev_idle_start (EV_P_ ev_idle *w)
2087{
2088 if (expect_false (ev_is_active (w)))
2089 return;
2090
2091 pri_adjust (EV_A_ (W)w);
2092
2093 {
2094 int active = ++idlecnt [ABSPRI (w)];
2095
2096 ++idleall;
2097 ev_start (EV_A_ (W)w, active);
2098
2099 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2100 idles [ABSPRI (w)][active - 1] = w;
2101 }
2102}
2103
2104void
2105ev_idle_stop (EV_P_ ev_idle *w)
2106{
2107 clear_pending (EV_A_ (W)w);
2108 if (expect_false (!ev_is_active (w)))
2109 return;
2110
2111 {
2112 int active = ((W)w)->active;
2113
2114 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2115 ((W)idles [ABSPRI (w)][active - 1])->active = active;
2116
2117 ev_stop (EV_A_ (W)w);
2118 --idleall;
2119 }
2120}
2121#endif
2122
2123void
2124ev_prepare_start (EV_P_ ev_prepare *w)
2125{
2126 if (expect_false (ev_is_active (w)))
2127 return;
2128
2129 ev_start (EV_A_ (W)w, ++preparecnt);
2130 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2131 prepares [preparecnt - 1] = w;
2132}
2133
2134void
2135ev_prepare_stop (EV_P_ ev_prepare *w)
2136{
2137 clear_pending (EV_A_ (W)w);
2138 if (expect_false (!ev_is_active (w)))
2139 return;
2140
2141 {
2142 int active = ((W)w)->active;
2143 prepares [active - 1] = prepares [--preparecnt];
2144 ((W)prepares [active - 1])->active = active;
2145 }
2146
2147 ev_stop (EV_A_ (W)w);
2148}
2149
2150void
2151ev_check_start (EV_P_ ev_check *w)
2152{
2153 if (expect_false (ev_is_active (w)))
2154 return;
2155
2156 ev_start (EV_A_ (W)w, ++checkcnt);
2157 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2158 checks [checkcnt - 1] = w;
2159}
2160
2161void
2162ev_check_stop (EV_P_ ev_check *w)
2163{
2164 clear_pending (EV_A_ (W)w);
2165 if (expect_false (!ev_is_active (w)))
2166 return;
2167
2168 {
2169 int active = ((W)w)->active;
2170 checks [active - 1] = checks [--checkcnt];
2171 ((W)checks [active - 1])->active = active;
2172 }
2173
2174 ev_stop (EV_A_ (W)w);
2175}
2176
2177#if EV_EMBED_ENABLE
2178void noinline
2179ev_embed_sweep (EV_P_ ev_embed *w)
2180{
2181 ev_loop (w->loop, EVLOOP_NONBLOCK);
2182}
2183
2184static void
2185embed_cb (EV_P_ ev_io *io, int revents)
2186{
2187 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2188
2189 if (ev_cb (w))
2190 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2191 else
2192 ev_embed_sweep (loop, w);
2193}
2194
2195void
2196ev_embed_start (EV_P_ ev_embed *w)
2197{
2198 if (expect_false (ev_is_active (w)))
2199 return;
2200
2201 {
2202 struct ev_loop *loop = w->loop;
2203 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2204 ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
2205 }
2206
2207 ev_set_priority (&w->io, ev_priority (w));
2208 ev_io_start (EV_A_ &w->io);
2209
2210 ev_start (EV_A_ (W)w, 1);
2211}
2212
2213void
2214ev_embed_stop (EV_P_ ev_embed *w)
2215{
2216 clear_pending (EV_A_ (W)w);
2217 if (expect_false (!ev_is_active (w)))
2218 return;
2219
2220 ev_io_stop (EV_A_ &w->io);
2221
2222 ev_stop (EV_A_ (W)w);
2223}
2224#endif
2225
2226#if EV_FORK_ENABLE
2227void
2228ev_fork_start (EV_P_ ev_fork *w)
2229{
2230 if (expect_false (ev_is_active (w)))
2231 return;
2232
2233 ev_start (EV_A_ (W)w, ++forkcnt);
2234 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2235 forks [forkcnt - 1] = w;
2236}
2237
2238void
2239ev_fork_stop (EV_P_ ev_fork *w)
2240{
2241 clear_pending (EV_A_ (W)w);
2242 if (expect_false (!ev_is_active (w)))
2243 return;
2244
2245 {
2246 int active = ((W)w)->active;
2247 forks [active - 1] = forks [--forkcnt];
2248 ((W)forks [active - 1])->active = active;
2249 }
2250
2251 ev_stop (EV_A_ (W)w);
2252}
2253#endif
2254
1382/*****************************************************************************/ 2255/*****************************************************************************/
1383 2256
1384struct ev_once 2257struct ev_once
1385{ 2258{
1386 struct ev_io io; 2259 ev_io io;
1387 struct ev_timer to; 2260 ev_timer to;
1388 void (*cb)(int revents, void *arg); 2261 void (*cb)(int revents, void *arg);
1389 void *arg; 2262 void *arg;
1390}; 2263};
1391 2264
1392static void 2265static void
… …
1395 void (*cb)(int revents, void *arg) = once->cb; 2268 void (*cb)(int revents, void *arg) = once->cb;
1396 void *arg = once->arg; 2269 void *arg = once->arg;
1397 2270
1398 ev_io_stop (EV_A_ &once->io); 2271 ev_io_stop (EV_A_ &once->io);
1399 ev_timer_stop (EV_A_ &once->to); 2272 ev_timer_stop (EV_A_ &once->to);
1400 free (once); 2273 ev_free (once);
1401 2274
1402 cb (revents, arg); 2275 cb (revents, arg);
1403} 2276}
1404 2277
1405static void 2278static void
1406once_cb_io (EV_P_ struct ev_io *w, int revents) 2279once_cb_io (EV_P_ ev_io *w, int revents)
1407{ 2280{
1408 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 2281 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1409} 2282}
1410 2283
1411static void 2284static void
1412once_cb_to (EV_P_ struct ev_timer *w, int revents) 2285once_cb_to (EV_P_ ev_timer *w, int revents)
1413{ 2286{
1414 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 2287 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1415} 2288}
1416 2289
1417void 2290void
1418ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 2291ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1419{ 2292{
1420 struct ev_once *once = malloc (sizeof (struct ev_once)); 2293 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1421 2294
1422 if (!once) 2295 if (expect_false (!once))
2296 {
1423 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 2297 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1424 else 2298 return;
1425 { 2299 }
2300
1426 once->cb = cb; 2301 once->cb = cb;
1427 once->arg = arg; 2302 once->arg = arg;
1428 2303
1429 ev_watcher_init (&once->io, once_cb_io); 2304 ev_init (&once->io, once_cb_io);
1430 if (fd >= 0) 2305 if (fd >= 0)
1431 { 2306 {
1432 ev_io_set (&once->io, fd, events); 2307 ev_io_set (&once->io, fd, events);
1433 ev_io_start (EV_A_ &once->io); 2308 ev_io_start (EV_A_ &once->io);
1434 } 2309 }
1435 2310
1436 ev_watcher_init (&once->to, once_cb_to); 2311 ev_init (&once->to, once_cb_to);
1437 if (timeout >= 0.) 2312 if (timeout >= 0.)
1438 { 2313 {
1439 ev_timer_set (&once->to, timeout, 0.); 2314 ev_timer_set (&once->to, timeout, 0.);
1440 ev_timer_start (EV_A_ &once->to); 2315 ev_timer_start (EV_A_ &once->to);
1441 }
1442 } 2316 }
1443} 2317}
1444 2318
2319#ifdef __cplusplus
2320}
2321#endif
2322

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