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Comparing libev/ev.c (file contents):
Revision 1.84 by root, Fri Nov 9 23:04:35 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>
… …
66#include <sys/types.h> 118#include <sys/types.h>
67#include <time.h> 119#include <time.h>
68 120
69#include <signal.h> 121#include <signal.h>
70 122
71#ifndef WIN32
72# include <unistd.h>
73# include <sys/time.h>
74# include <sys/wait.h>
75#endif
76/**/
77
78#ifndef EV_USE_MONOTONIC
79# define EV_USE_MONOTONIC 1
80#endif
81
82#ifndef EV_USE_SELECT
83# define EV_USE_SELECT 1
84#endif
85
86#ifndef EV_USE_POLL
87# define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */
88#endif
89
90#ifndef EV_USE_EPOLL
91# define EV_USE_EPOLL 0
92#endif
93
94#ifndef EV_USE_KQUEUE
95# define EV_USE_KQUEUE 0
96#endif
97
98#ifndef EV_USE_WIN32
99# ifdef WIN32
100# define EV_USE_WIN32 0 /* it does not exist, use select */
101# undef EV_USE_SELECT
102# define EV_USE_SELECT 1
103# else
104# define EV_USE_WIN32 0
105# endif
106#endif
107
108#ifndef EV_USE_REALTIME
109# define EV_USE_REALTIME 1
110#endif
111
112/**/
113
114#ifndef CLOCK_MONOTONIC
115# undef EV_USE_MONOTONIC
116# define EV_USE_MONOTONIC 0
117#endif
118
119#ifndef CLOCK_REALTIME
120# undef EV_USE_REALTIME
121# define EV_USE_REALTIME 0
122#endif
123
124/**/
125
126#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
127#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */
128#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
129/*#define CLEANUP_INTERVAL 300. /* how often to try to free memory and re-check fds */
130
131#ifdef EV_H 123#ifdef EV_H
132# include EV_H 124# include EV_H
133#else 125#else
134# include "ev.h" 126# include "ev.h"
135#endif 127#endif
136 128
129#ifndef _WIN32
130# include <sys/time.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
138# endif
139#endif
140
141/**/
142
143#ifndef EV_USE_MONOTONIC
144# define EV_USE_MONOTONIC 0
145#endif
146
147#ifndef EV_USE_REALTIME
148# define EV_USE_REALTIME 0
149#endif
150
151#ifndef EV_USE_SELECT
152# define EV_USE_SELECT 1
153#endif
154
155#ifndef EV_USE_POLL
156# ifdef _WIN32
157# define EV_USE_POLL 0
158# else
159# define EV_USE_POLL 1
160# endif
161#endif
162
163#ifndef EV_USE_EPOLL
164# define EV_USE_EPOLL 0
165#endif
166
167#ifndef EV_USE_KQUEUE
168# define EV_USE_KQUEUE 0
169#endif
170
171#ifndef EV_USE_PORT
172# define EV_USE_PORT 0
173#endif
174
175#ifndef EV_USE_INOTIFY
176# define EV_USE_INOTIFY 0
177#endif
178
179#ifndef EV_PID_HASHSIZE
180# if EV_MINIMAL
181# define EV_PID_HASHSIZE 1
182# else
183# define EV_PID_HASHSIZE 16
184# endif
185#endif
186
187#ifndef EV_INOTIFY_HASHSIZE
188# if EV_MINIMAL
189# define EV_INOTIFY_HASHSIZE 1
190# else
191# define EV_INOTIFY_HASHSIZE 16
192# endif
193#endif
194
195/**/
196
197#ifndef CLOCK_MONOTONIC
198# undef EV_USE_MONOTONIC
199# define EV_USE_MONOTONIC 0
200#endif
201
202#ifndef CLOCK_REALTIME
203# undef EV_USE_REALTIME
204# define EV_USE_REALTIME 0
205#endif
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
219/**/
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
231#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
232#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
233/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
234
137#if __GNUC__ >= 3 235#if __GNUC__ >= 3
138# define expect(expr,value) __builtin_expect ((expr),(value)) 236# define expect(expr,value) __builtin_expect ((expr),(value))
139# define inline inline 237# define noinline __attribute__ ((noinline))
140#else 238#else
141# define expect(expr,value) (expr) 239# define expect(expr,value) (expr)
142# define inline static 240# define noinline
241# if __STDC_VERSION__ < 199901L
242# define inline
243# endif
143#endif 244#endif
144 245
145#define expect_false(expr) expect ((expr) != 0, 0) 246#define expect_false(expr) expect ((expr) != 0, 0)
146#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
147 255
148#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 256#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
149#define ABSPRI(w) ((w)->priority - EV_MINPRI) 257#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
150 258
259#define EMPTY /* required for microsofts broken pseudo-c compiler */
260#define EMPTY2(a,b) /* used to suppress some warnings */
261
151typedef struct ev_watcher *W; 262typedef ev_watcher *W;
152typedef struct ev_watcher_list *WL; 263typedef ev_watcher_list *WL;
153typedef struct ev_watcher_time *WT; 264typedef ev_watcher_time *WT;
154 265
155static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 266static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
156 267
268#ifdef _WIN32
157#include "ev_win32.c" 269# include "ev_win32.c"
270#endif
158 271
159/*****************************************************************************/ 272/*****************************************************************************/
160 273
161static void (*syserr_cb)(const char *msg); 274static void (*syserr_cb)(const char *msg);
162 275
276void
163void ev_set_syserr_cb (void (*cb)(const char *msg)) 277ev_set_syserr_cb (void (*cb)(const char *msg))
164{ 278{
165 syserr_cb = cb; 279 syserr_cb = cb;
166} 280}
167 281
168static void 282static void noinline
169syserr (const char *msg) 283syserr (const char *msg)
170{ 284{
171 if (!msg) 285 if (!msg)
172 msg = "(libev) system error"; 286 msg = "(libev) system error";
173 287
… …
180 } 294 }
181} 295}
182 296
183static void *(*alloc)(void *ptr, long size); 297static void *(*alloc)(void *ptr, long size);
184 298
299void
185void ev_set_allocator (void *(*cb)(void *ptr, long size)) 300ev_set_allocator (void *(*cb)(void *ptr, long size))
186{ 301{
187 alloc = cb; 302 alloc = cb;
188} 303}
189 304
190static void * 305inline_speed void *
191ev_realloc (void *ptr, long size) 306ev_realloc (void *ptr, long size)
192{ 307{
193 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size); 308 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
194 309
195 if (!ptr && size) 310 if (!ptr && size)
… …
209typedef struct 324typedef struct
210{ 325{
211 WL head; 326 WL head;
212 unsigned char events; 327 unsigned char events;
213 unsigned char reify; 328 unsigned char reify;
329#if EV_SELECT_IS_WINSOCKET
330 SOCKET handle;
331#endif
214} ANFD; 332} ANFD;
215 333
216typedef struct 334typedef struct
217{ 335{
218 W w; 336 W w;
219 int events; 337 int events;
220} ANPENDING; 338} ANPENDING;
221 339
340#if EV_USE_INOTIFY
341typedef struct
342{
343 WL head;
344} ANFS;
345#endif
346
222#if EV_MULTIPLICITY 347#if EV_MULTIPLICITY
223 348
224 struct ev_loop 349 struct ev_loop
225 { 350 {
351 ev_tstamp ev_rt_now;
352 #define ev_rt_now ((loop)->ev_rt_now)
226 #define VAR(name,decl) decl; 353 #define VAR(name,decl) decl;
227 #include "ev_vars.h" 354 #include "ev_vars.h"
228 #undef VAR 355 #undef VAR
229 }; 356 };
230 #include "ev_wrap.h" 357 #include "ev_wrap.h"
231 358
232 struct ev_loop default_loop_struct; 359 static struct ev_loop default_loop_struct;
233 static struct ev_loop *default_loop; 360 struct ev_loop *ev_default_loop_ptr;
234 361
235#else 362#else
236 363
364 ev_tstamp ev_rt_now;
237 #define VAR(name,decl) static decl; 365 #define VAR(name,decl) static decl;
238 #include "ev_vars.h" 366 #include "ev_vars.h"
239 #undef VAR 367 #undef VAR
240 368
241 static int default_loop; 369 static int ev_default_loop_ptr;
242 370
243#endif 371#endif
244 372
245/*****************************************************************************/ 373/*****************************************************************************/
246 374
247inline ev_tstamp 375ev_tstamp
248ev_time (void) 376ev_time (void)
249{ 377{
250#if EV_USE_REALTIME 378#if EV_USE_REALTIME
251 struct timespec ts; 379 struct timespec ts;
252 clock_gettime (CLOCK_REALTIME, &ts); 380 clock_gettime (CLOCK_REALTIME, &ts);
… …
256 gettimeofday (&tv, 0); 384 gettimeofday (&tv, 0);
257 return tv.tv_sec + tv.tv_usec * 1e-6; 385 return tv.tv_sec + tv.tv_usec * 1e-6;
258#endif 386#endif
259} 387}
260 388
261inline ev_tstamp 389ev_tstamp inline_size
262get_clock (void) 390get_clock (void)
263{ 391{
264#if EV_USE_MONOTONIC 392#if EV_USE_MONOTONIC
265 if (expect_true (have_monotonic)) 393 if (expect_true (have_monotonic))
266 { 394 {
… …
271#endif 399#endif
272 400
273 return ev_time (); 401 return ev_time ();
274} 402}
275 403
404#if EV_MULTIPLICITY
276ev_tstamp 405ev_tstamp
277ev_now (EV_P) 406ev_now (EV_P)
278{ 407{
279 return rt_now; 408 return ev_rt_now;
280} 409}
410#endif
281 411
282#define array_roundsize(type,n) ((n) | 4 & ~3) 412int inline_size
413array_nextsize (int elem, int cur, int cnt)
414{
415 int ncur = cur + 1;
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}
283 439
284#define array_needsize(type,base,cur,cnt,init) \ 440#define array_needsize(type,base,cur,cnt,init) \
285 if (expect_false ((cnt) > cur)) \ 441 if (expect_false ((cnt) > (cur))) \
286 { \ 442 { \
287 int newcnt = cur; \ 443 int ocur_ = (cur); \
288 do \ 444 (base) = (type *)array_realloc \
289 { \ 445 (sizeof (type), (base), &(cur), (cnt)); \
290 newcnt = array_roundsize (type, newcnt << 1); \ 446 init ((base) + (ocur_), (cur) - ocur_); \
291 } \
292 while ((cnt) > newcnt); \
293 \
294 base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\
295 init (base + cur, newcnt - cur); \
296 cur = newcnt; \
297 } 447 }
298 448
449#if 0
299#define array_slim(type,stem) \ 450#define array_slim(type,stem) \
300 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 451 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
301 { \ 452 { \
302 stem ## max = array_roundsize (stem ## cnt >> 1); \ 453 stem ## max = array_roundsize (stem ## cnt >> 1); \
303 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\ 454 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
304 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 455 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
305 } 456 }
306 457#endif
307/* microsoft's pseudo-c is quite far from C as the rest of the world and the standard knows it */
308/* bringing us everlasting joy in form of stupid extra macros that are not required in C */
309#define array_free_microshit(stem) \
310 ev_free (stem ## s); stem ## cnt = stem ## max = 0;
311 458
312#define array_free(stem, idx) \ 459#define array_free(stem, idx) \
313 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 460 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
314 461
315/*****************************************************************************/ 462/*****************************************************************************/
316 463
317static 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
318anfds_init (ANFD *base, int count) 493anfds_init (ANFD *base, int count)
319{ 494{
320 while (count--) 495 while (count--)
321 { 496 {
322 base->head = 0; 497 base->head = 0;
… …
325 500
326 ++base; 501 ++base;
327 } 502 }
328} 503}
329 504
330void 505void inline_speed
331ev_feed_event (EV_P_ void *w, int revents)
332{
333 W w_ = (W)w;
334
335 if (w_->pending)
336 {
337 pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
338 return;
339 }
340
341 w_->pending = ++pendingcnt [ABSPRI (w_)];
342 array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], (void));
343 pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
344 pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
345}
346
347static void
348queue_events (EV_P_ W *events, int eventcnt, int type)
349{
350 int i;
351
352 for (i = 0; i < eventcnt; ++i)
353 ev_feed_event (EV_A_ events [i], type);
354}
355
356inline void
357fd_event (EV_P_ int fd, int revents) 506fd_event (EV_P_ int fd, int revents)
358{ 507{
359 ANFD *anfd = anfds + fd; 508 ANFD *anfd = anfds + fd;
360 struct ev_io *w; 509 ev_io *w;
361 510
362 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)
363 { 512 {
364 int ev = w->events & revents; 513 int ev = w->events & revents;
365 514
366 if (ev) 515 if (ev)
367 ev_feed_event (EV_A_ (W)w, ev); 516 ev_feed_event (EV_A_ (W)w, ev);
… …
369} 518}
370 519
371void 520void
372ev_feed_fd_event (EV_P_ int fd, int revents) 521ev_feed_fd_event (EV_P_ int fd, int revents)
373{ 522{
523 if (fd >= 0 && fd < anfdmax)
374 fd_event (EV_A_ fd, revents); 524 fd_event (EV_A_ fd, revents);
375} 525}
376 526
377/*****************************************************************************/ 527void inline_size
378
379static void
380fd_reify (EV_P) 528fd_reify (EV_P)
381{ 529{
382 int i; 530 int i;
383 531
384 for (i = 0; i < fdchangecnt; ++i) 532 for (i = 0; i < fdchangecnt; ++i)
385 { 533 {
386 int fd = fdchanges [i]; 534 int fd = fdchanges [i];
387 ANFD *anfd = anfds + fd; 535 ANFD *anfd = anfds + fd;
388 struct ev_io *w; 536 ev_io *w;
389 537
390 int events = 0; 538 unsigned char events = 0;
391 539
392 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)
393 events |= w->events; 541 events |= (unsigned char)w->events;
394 542
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
395 anfd->reify = 0; 556 anfd->reify = 0;
396
397 method_modify (EV_A_ fd, anfd->events, events);
398 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 }
399 } 562 }
400 563
401 fdchangecnt = 0; 564 fdchangecnt = 0;
402} 565}
403 566
404static void 567void inline_size
405fd_change (EV_P_ int fd) 568fd_change (EV_P_ int fd, int flags)
406{ 569{
407 if (anfds [fd].reify) 570 unsigned char reify = anfds [fd].reify;
408 return;
409
410 anfds [fd].reify = 1; 571 anfds [fd].reify |= flags;
411 572
573 if (expect_true (!reify))
574 {
412 ++fdchangecnt; 575 ++fdchangecnt;
413 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void)); 576 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
414 fdchanges [fdchangecnt - 1] = fd; 577 fdchanges [fdchangecnt - 1] = fd;
578 }
415} 579}
416 580
417static void 581void inline_speed
418fd_kill (EV_P_ int fd) 582fd_kill (EV_P_ int fd)
419{ 583{
420 struct ev_io *w; 584 ev_io *w;
421 585
422 while ((w = (struct ev_io *)anfds [fd].head)) 586 while ((w = (ev_io *)anfds [fd].head))
423 { 587 {
424 ev_io_stop (EV_A_ w); 588 ev_io_stop (EV_A_ w);
425 ev_feed_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);
426 } 590 }
427} 591}
428 592
429static int 593int inline_size
430fd_valid (int fd) 594fd_valid (int fd)
431{ 595{
432#ifdef WIN32 596#ifdef _WIN32
433 return !!win32_get_osfhandle (fd); 597 return _get_osfhandle (fd) != -1;
434#else 598#else
435 return fcntl (fd, F_GETFD) != -1; 599 return fcntl (fd, F_GETFD) != -1;
436#endif 600#endif
437} 601}
438 602
439/* called on EBADF to verify fds */ 603/* called on EBADF to verify fds */
440static void 604static void noinline
441fd_ebadf (EV_P) 605fd_ebadf (EV_P)
442{ 606{
443 int fd; 607 int fd;
444 608
445 for (fd = 0; fd < anfdmax; ++fd) 609 for (fd = 0; fd < anfdmax; ++fd)
… …
447 if (!fd_valid (fd) == -1 && errno == EBADF) 611 if (!fd_valid (fd) == -1 && errno == EBADF)
448 fd_kill (EV_A_ fd); 612 fd_kill (EV_A_ fd);
449} 613}
450 614
451/* 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 */
452static void 616static void noinline
453fd_enomem (EV_P) 617fd_enomem (EV_P)
454{ 618{
455 int fd; 619 int fd;
456 620
457 for (fd = anfdmax; fd--; ) 621 for (fd = anfdmax; fd--; )
… …
460 fd_kill (EV_A_ fd); 624 fd_kill (EV_A_ fd);
461 return; 625 return;
462 } 626 }
463} 627}
464 628
465/* usually 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 */
466static void 630static void noinline
467fd_rearm_all (EV_P) 631fd_rearm_all (EV_P)
468{ 632{
469 int fd; 633 int fd;
470 634
471 /* this should be highly optimised to not do anything but set a flag */
472 for (fd = 0; fd < anfdmax; ++fd) 635 for (fd = 0; fd < anfdmax; ++fd)
473 if (anfds [fd].events) 636 if (anfds [fd].events)
474 { 637 {
475 anfds [fd].events = 0; 638 anfds [fd].events = 0;
476 fd_change (EV_A_ fd); 639 fd_change (EV_A_ fd, EV_IOFDSET | 1);
477 } 640 }
478} 641}
479 642
480/*****************************************************************************/ 643/*****************************************************************************/
481 644
482static void 645void inline_speed
483upheap (WT *heap, int k) 646upheap (WT *heap, int k)
484{ 647{
485 WT w = heap [k]; 648 WT w = heap [k];
486 649
487 while (k && heap [k >> 1]->at > w->at) 650 while (k)
488 { 651 {
652 int p = (k - 1) >> 1;
653
654 if (heap [p]->at <= w->at)
655 break;
656
489 heap [k] = heap [k >> 1]; 657 heap [k] = heap [p];
490 ((W)heap [k])->active = k + 1; 658 ((W)heap [k])->active = k + 1;
491 k >>= 1; 659 k = p;
492 } 660 }
493 661
494 heap [k] = w; 662 heap [k] = w;
495 ((W)heap [k])->active = k + 1; 663 ((W)heap [k])->active = k + 1;
496
497} 664}
498 665
499static void 666void inline_speed
500downheap (WT *heap, int N, int k) 667downheap (WT *heap, int N, int k)
501{ 668{
502 WT w = heap [k]; 669 WT w = heap [k];
503 670
504 while (k < (N >> 1)) 671 for (;;)
505 { 672 {
506 int j = k << 1; 673 int c = (k << 1) + 1;
507 674
508 if (j + 1 < N && heap [j]->at > heap [j + 1]->at) 675 if (c >= N)
509 ++j;
510
511 if (w->at <= heap [j]->at)
512 break; 676 break;
513 677
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
514 heap [k] = heap [j]; 684 heap [k] = heap [c];
515 ((W)heap [k])->active = k + 1; 685 ((W)heap [k])->active = k + 1;
686
516 k = j; 687 k = c;
517 } 688 }
518 689
519 heap [k] = w; 690 heap [k] = w;
520 ((W)heap [k])->active = k + 1; 691 ((W)heap [k])->active = k + 1;
521} 692}
522 693
523inline void 694void inline_size
524adjustheap (WT *heap, int N, int k, ev_tstamp at) 695adjustheap (WT *heap, int N, int k)
525{ 696{
526 ev_tstamp old_at = heap [k]->at; 697 upheap (heap, k);
527 heap [k]->at = at;
528
529 if (old_at < at)
530 downheap (heap, N, k); 698 downheap (heap, N, k);
531 else
532 upheap (heap, k);
533} 699}
534 700
535/*****************************************************************************/ 701/*****************************************************************************/
536 702
537typedef struct 703typedef struct
… …
543static ANSIG *signals; 709static ANSIG *signals;
544static int signalmax; 710static int signalmax;
545 711
546static int sigpipe [2]; 712static int sigpipe [2];
547static sig_atomic_t volatile gotsig; 713static sig_atomic_t volatile gotsig;
548static struct ev_io sigev; 714static ev_io sigev;
549 715
550static void 716void inline_size
551signals_init (ANSIG *base, int count) 717signals_init (ANSIG *base, int count)
552{ 718{
553 while (count--) 719 while (count--)
554 { 720 {
555 base->head = 0; 721 base->head = 0;
… …
560} 726}
561 727
562static void 728static void
563sighandler (int signum) 729sighandler (int signum)
564{ 730{
565#if WIN32 731#if _WIN32
566 signal (signum, sighandler); 732 signal (signum, sighandler);
567#endif 733#endif
568 734
569 signals [signum - 1].gotsig = 1; 735 signals [signum - 1].gotsig = 1;
570 736
571 if (!gotsig) 737 if (!gotsig)
572 { 738 {
573 int old_errno = errno; 739 int old_errno = errno;
574 gotsig = 1; 740 gotsig = 1;
575#ifdef WIN32
576 send (sigpipe [1], &signum, 1, MSG_DONTWAIT);
577#else
578 write (sigpipe [1], &signum, 1); 741 write (sigpipe [1], &signum, 1);
579#endif
580 errno = old_errno; 742 errno = old_errno;
581 } 743 }
582} 744}
583 745
584void 746void noinline
585ev_feed_signal_event (EV_P_ int signum) 747ev_feed_signal_event (EV_P_ int signum)
586{ 748{
587 WL w; 749 WL w;
588 750
589#if EV_MULTIPLICITY 751#if EV_MULTIPLICITY
590 assert (("feeding signal events is only supported in the default loop", loop == default_loop)); 752 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
591#endif 753#endif
592 754
593 --signum; 755 --signum;
594 756
595 if (signum < 0 || signum >= signalmax) 757 if (signum < 0 || signum >= signalmax)
… …
600 for (w = signals [signum].head; w; w = w->next) 762 for (w = signals [signum].head; w; w = w->next)
601 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 763 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
602} 764}
603 765
604static void 766static void
605sigcb (EV_P_ struct ev_io *iow, int revents) 767sigcb (EV_P_ ev_io *iow, int revents)
606{ 768{
607 int signum; 769 int signum;
608 770
609#ifdef WIN32
610 recv (sigpipe [0], &revents, 1, MSG_DONTWAIT);
611#else
612 read (sigpipe [0], &revents, 1); 771 read (sigpipe [0], &revents, 1);
613#endif
614 gotsig = 0; 772 gotsig = 0;
615 773
616 for (signum = signalmax; signum--; ) 774 for (signum = signalmax; signum--; )
617 if (signals [signum].gotsig) 775 if (signals [signum].gotsig)
618 ev_feed_signal_event (EV_A_ signum + 1); 776 ev_feed_signal_event (EV_A_ signum + 1);
619} 777}
620 778
621static 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
622siginit (EV_P) 792siginit (EV_P)
623{ 793{
624#ifndef WIN32 794 fd_intern (sigpipe [0]);
625 fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC); 795 fd_intern (sigpipe [1]);
626 fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
627
628 /* rather than sort out wether we really need nb, set it */
629 fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
630 fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
631#endif
632 796
633 ev_io_set (&sigev, sigpipe [0], EV_READ); 797 ev_io_set (&sigev, sigpipe [0], EV_READ);
634 ev_io_start (EV_A_ &sigev); 798 ev_io_start (EV_A_ &sigev);
635 ev_unref (EV_A); /* child watcher should not keep loop alive */ 799 ev_unref (EV_A); /* child watcher should not keep loop alive */
636} 800}
637 801
638/*****************************************************************************/ 802/*****************************************************************************/
639 803
640static struct ev_child *childs [PID_HASHSIZE]; 804static WL childs [EV_PID_HASHSIZE];
641 805
642#ifndef WIN32 806#ifndef _WIN32
643 807
644static 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}
645 824
646#ifndef WCONTINUED 825#ifndef WCONTINUED
647# define WCONTINUED 0 826# define WCONTINUED 0
648#endif 827#endif
649 828
650static void 829static void
651child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
652{
653 struct ev_child *w;
654
655 for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
656 if (w->pid == pid || !w->pid)
657 {
658 ev_priority (w) = ev_priority (sw); /* need to do it *now* */
659 w->rpid = pid;
660 w->rstatus = status;
661 ev_feed_event (EV_A_ (W)w, EV_CHILD);
662 }
663}
664
665static void
666childcb (EV_P_ struct ev_signal *sw, int revents) 830childcb (EV_P_ ev_signal *sw, int revents)
667{ 831{
668 int pid, status; 832 int pid, status;
669 833
834 /* some systems define WCONTINUED but then fail to support it (linux 2.4) */
670 if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) 835 if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
671 { 836 if (!WCONTINUED
837 || errno != EINVAL
838 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
839 return;
840
672 /* 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 */
673 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 843 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
674 844
675 child_reap (EV_A_ sw, pid, pid, status); 845 child_reap (EV_A_ sw, pid, pid, status);
846 if (EV_PID_HASHSIZE > 1)
676 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 */
677 }
678} 848}
679 849
680#endif 850#endif
681 851
682/*****************************************************************************/ 852/*****************************************************************************/
683 853
854#if EV_USE_PORT
855# include "ev_port.c"
856#endif
684#if EV_USE_KQUEUE 857#if EV_USE_KQUEUE
685# include "ev_kqueue.c" 858# include "ev_kqueue.c"
686#endif 859#endif
687#if EV_USE_EPOLL 860#if EV_USE_EPOLL
688# include "ev_epoll.c" 861# include "ev_epoll.c"
… …
705{ 878{
706 return EV_VERSION_MINOR; 879 return EV_VERSION_MINOR;
707} 880}
708 881
709/* 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 */
710static int 883int inline_size
711enable_secure (void) 884enable_secure (void)
712{ 885{
713#ifdef WIN32 886#ifdef _WIN32
714 return 0; 887 return 0;
715#else 888#else
716 return getuid () != geteuid () 889 return getuid () != geteuid ()
717 || getgid () != getegid (); 890 || getgid () != getegid ();
718#endif 891#endif
719} 892}
720 893
721int 894unsigned int
722ev_method (EV_P) 895ev_supported_backends (void)
723{ 896{
724 return method; 897 unsigned int flags = 0;
725}
726 898
727static void 899 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
728loop_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)
729{ 910{
730 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)
731 { 950 {
732#if EV_USE_MONOTONIC 951#if EV_USE_MONOTONIC
733 { 952 {
734 struct timespec ts; 953 struct timespec ts;
735 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 954 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
736 have_monotonic = 1; 955 have_monotonic = 1;
737 } 956 }
738#endif 957#endif
739 958
740 rt_now = ev_time (); 959 ev_rt_now = ev_time ();
741 mn_now = get_clock (); 960 mn_now = get_clock ();
742 now_floor = mn_now; 961 now_floor = mn_now;
743 rtmn_diff = rt_now - mn_now; 962 rtmn_diff = ev_rt_now - mn_now;
744 963
745 if (methods == EVMETHOD_AUTO) 964 /* pid check not overridable via env */
746 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"))
747 methods = atoi (getenv ("LIBEV_METHODS")); 973 flags = atoi (getenv ("LIBEV_FLAGS"));
748 else
749 methods = EVMETHOD_ANY;
750 974
751 method = 0; 975 if (!(flags & 0x0000ffffUL))
976 flags |= ev_recommended_backends ();
977
978 backend = 0;
979 backend_fd = -1;
752#if EV_USE_WIN32 980#if EV_USE_INOTIFY
753 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);
754#endif 986#endif
755#if EV_USE_KQUEUE 987#if EV_USE_KQUEUE
756 if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods); 988 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
757#endif 989#endif
758#if EV_USE_EPOLL 990#if EV_USE_EPOLL
759 if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods); 991 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
760#endif 992#endif
761#if EV_USE_POLL 993#if EV_USE_POLL
762 if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods); 994 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
763#endif 995#endif
764#if EV_USE_SELECT 996#if EV_USE_SELECT
765 if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods); 997 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
766#endif 998#endif
767 999
768 ev_init (&sigev, sigcb); 1000 ev_init (&sigev, sigcb);
769 ev_set_priority (&sigev, EV_MAXPRI); 1001 ev_set_priority (&sigev, EV_MAXPRI);
770 } 1002 }
771} 1003}
772 1004
773void 1005static void noinline
774loop_destroy (EV_P) 1006loop_destroy (EV_P)
775{ 1007{
776 int i; 1008 int i;
777 1009
778#if EV_USE_WIN32 1010#if EV_USE_INOTIFY
779 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);
780#endif 1020#endif
781#if EV_USE_KQUEUE 1021#if EV_USE_KQUEUE
782 if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A); 1022 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
783#endif 1023#endif
784#if EV_USE_EPOLL 1024#if EV_USE_EPOLL
785 if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A); 1025 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
786#endif 1026#endif
787#if EV_USE_POLL 1027#if EV_USE_POLL
788 if (method == EVMETHOD_POLL ) poll_destroy (EV_A); 1028 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
789#endif 1029#endif
790#if EV_USE_SELECT 1030#if EV_USE_SELECT
791 if (method == EVMETHOD_SELECT) select_destroy (EV_A); 1031 if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
792#endif 1032#endif
793 1033
794 for (i = NUMPRI; i--; ) 1034 for (i = NUMPRI; i--; )
1035 {
795 array_free (pending, [i]); 1036 array_free (pending, [i]);
1037#if EV_IDLE_ENABLE
1038 array_free (idle, [i]);
1039#endif
1040 }
796 1041
797 /* have to use the microsoft-never-gets-it-right macro */ 1042 /* have to use the microsoft-never-gets-it-right macro */
798 array_free_microshit (fdchange); 1043 array_free (fdchange, EMPTY);
799 array_free_microshit (timer); 1044 array_free (timer, EMPTY);
800 array_free_microshit (periodic); 1045#if EV_PERIODIC_ENABLE
801 array_free_microshit (idle); 1046 array_free (periodic, EMPTY);
802 array_free_microshit (prepare); 1047#endif
803 array_free_microshit (check); 1048 array_free (prepare, EMPTY);
1049 array_free (check, EMPTY);
804 1050
805 method = 0; 1051 backend = 0;
806} 1052}
807 1053
808static void 1054void inline_size infy_fork (EV_P);
1055
1056void inline_size
809loop_fork (EV_P) 1057loop_fork (EV_P)
810{ 1058{
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
811#if EV_USE_EPOLL 1065#if EV_USE_EPOLL
812 if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A); 1066 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
813#endif 1067#endif
814#if EV_USE_KQUEUE 1068#if EV_USE_INOTIFY
815 if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A); 1069 infy_fork (EV_A);
816#endif 1070#endif
817 1071
818 if (ev_is_active (&sigev)) 1072 if (ev_is_active (&sigev))
819 { 1073 {
820 /* default loop */ 1074 /* default loop */
… …
833 postfork = 0; 1087 postfork = 0;
834} 1088}
835 1089
836#if EV_MULTIPLICITY 1090#if EV_MULTIPLICITY
837struct ev_loop * 1091struct ev_loop *
838ev_loop_new (int methods) 1092ev_loop_new (unsigned int flags)
839{ 1093{
840 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 1094 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
841 1095
842 memset (loop, 0, sizeof (struct ev_loop)); 1096 memset (loop, 0, sizeof (struct ev_loop));
843 1097
844 loop_init (EV_A_ methods); 1098 loop_init (EV_A_ flags);
845 1099
846 if (ev_method (EV_A)) 1100 if (ev_backend (EV_A))
847 return loop; 1101 return loop;
848 1102
849 return 0; 1103 return 0;
850} 1104}
851 1105
… …
864 1118
865#endif 1119#endif
866 1120
867#if EV_MULTIPLICITY 1121#if EV_MULTIPLICITY
868struct ev_loop * 1122struct ev_loop *
1123ev_default_loop_init (unsigned int flags)
869#else 1124#else
870int 1125int
1126ev_default_loop (unsigned int flags)
871#endif 1127#endif
872ev_default_loop (int methods)
873{ 1128{
874 if (sigpipe [0] == sigpipe [1]) 1129 if (sigpipe [0] == sigpipe [1])
875 if (pipe (sigpipe)) 1130 if (pipe (sigpipe))
876 return 0; 1131 return 0;
877 1132
878 if (!default_loop) 1133 if (!ev_default_loop_ptr)
879 { 1134 {
880#if EV_MULTIPLICITY 1135#if EV_MULTIPLICITY
881 struct ev_loop *loop = default_loop = &default_loop_struct; 1136 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
882#else 1137#else
883 default_loop = 1; 1138 ev_default_loop_ptr = 1;
884#endif 1139#endif
885 1140
886 loop_init (EV_A_ methods); 1141 loop_init (EV_A_ flags);
887 1142
888 if (ev_method (EV_A)) 1143 if (ev_backend (EV_A))
889 { 1144 {
890 siginit (EV_A); 1145 siginit (EV_A);
891 1146
892#ifndef WIN32 1147#ifndef _WIN32
893 ev_signal_init (&childev, childcb, SIGCHLD); 1148 ev_signal_init (&childev, childcb, SIGCHLD);
894 ev_set_priority (&childev, EV_MAXPRI); 1149 ev_set_priority (&childev, EV_MAXPRI);
895 ev_signal_start (EV_A_ &childev); 1150 ev_signal_start (EV_A_ &childev);
896 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1151 ev_unref (EV_A); /* child watcher should not keep loop alive */
897#endif 1152#endif
898 } 1153 }
899 else 1154 else
900 default_loop = 0; 1155 ev_default_loop_ptr = 0;
901 } 1156 }
902 1157
903 return default_loop; 1158 return ev_default_loop_ptr;
904} 1159}
905 1160
906void 1161void
907ev_default_destroy (void) 1162ev_default_destroy (void)
908{ 1163{
909#if EV_MULTIPLICITY 1164#if EV_MULTIPLICITY
910 struct ev_loop *loop = default_loop; 1165 struct ev_loop *loop = ev_default_loop_ptr;
911#endif 1166#endif
912 1167
913#ifndef WIN32 1168#ifndef _WIN32
914 ev_ref (EV_A); /* child watcher */ 1169 ev_ref (EV_A); /* child watcher */
915 ev_signal_stop (EV_A_ &childev); 1170 ev_signal_stop (EV_A_ &childev);
916#endif 1171#endif
917 1172
918 ev_ref (EV_A); /* signal watcher */ 1173 ev_ref (EV_A); /* signal watcher */
… …
926 1181
927void 1182void
928ev_default_fork (void) 1183ev_default_fork (void)
929{ 1184{
930#if EV_MULTIPLICITY 1185#if EV_MULTIPLICITY
931 struct ev_loop *loop = default_loop; 1186 struct ev_loop *loop = ev_default_loop_ptr;
932#endif 1187#endif
933 1188
934 if (method) 1189 if (backend)
935 postfork = 1; 1190 postfork = 1;
936} 1191}
937 1192
938/*****************************************************************************/ 1193/*****************************************************************************/
939 1194
940static int 1195void
941any_pending (EV_P) 1196ev_invoke (EV_P_ void *w, int revents)
942{ 1197{
943 int pri; 1198 EV_CB_INVOKE ((W)w, revents);
944
945 for (pri = NUMPRI; pri--; )
946 if (pendingcnt [pri])
947 return 1;
948
949 return 0;
950} 1199}
951 1200
952static void 1201void inline_speed
953call_pending (EV_P) 1202call_pending (EV_P)
954{ 1203{
955 int pri; 1204 int pri;
956 1205
957 for (pri = NUMPRI; pri--; ) 1206 for (pri = NUMPRI; pri--; )
958 while (pendingcnt [pri]) 1207 while (pendingcnt [pri])
959 { 1208 {
960 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 1209 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
961 1210
962 if (p->w) 1211 if (expect_true (p->w))
963 { 1212 {
1213 /*assert (("non-pending watcher on pending list", p->w->pending));*/
1214
964 p->w->pending = 0; 1215 p->w->pending = 0;
965 EV_CB_INVOKE (p->w, p->events); 1216 EV_CB_INVOKE (p->w, p->events);
966 } 1217 }
967 } 1218 }
968} 1219}
969 1220
970static void 1221void inline_size
971timers_reify (EV_P) 1222timers_reify (EV_P)
972{ 1223{
973 while (timercnt && ((WT)timers [0])->at <= mn_now) 1224 while (timercnt && ((WT)timers [0])->at <= mn_now)
974 { 1225 {
975 struct ev_timer *w = timers [0]; 1226 ev_timer *w = (ev_timer *)timers [0];
976 1227
977 assert (("inactive timer on timer heap detected", ev_is_active (w))); 1228 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
978 1229
979 /* first reschedule or stop timer */ 1230 /* first reschedule or stop timer */
980 if (w->repeat) 1231 if (w->repeat)
981 { 1232 {
982 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
983 ((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
984 downheap ((WT *)timers, timercnt, 0); 1239 downheap (timers, timercnt, 0);
985 } 1240 }
986 else 1241 else
987 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ 1242 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
988 1243
989 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); 1244 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
990 } 1245 }
991} 1246}
992 1247
993static void 1248#if EV_PERIODIC_ENABLE
1249void inline_size
994periodics_reify (EV_P) 1250periodics_reify (EV_P)
995{ 1251{
996 while (periodiccnt && ((WT)periodics [0])->at <= rt_now) 1252 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
997 { 1253 {
998 struct ev_periodic *w = periodics [0]; 1254 ev_periodic *w = (ev_periodic *)periodics [0];
999 1255
1000 assert (("inactive timer on periodic heap detected", ev_is_active (w))); 1256 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1001 1257
1002 /* first reschedule or stop timer */ 1258 /* first reschedule or stop timer */
1003 if (w->reschedule_cb) 1259 if (w->reschedule_cb)
1004 { 1260 {
1005 ev_tstamp at = ((WT)w)->at = w->reschedule_cb (w, rt_now + 0.0001); 1261 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1006
1007 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > rt_now)); 1262 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1008 downheap ((WT *)periodics, periodiccnt, 0); 1263 downheap (periodics, periodiccnt, 0);
1009 } 1264 }
1010 else if (w->interval) 1265 else if (w->interval)
1011 { 1266 {
1012 ((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;
1013 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));
1014 downheap ((WT *)periodics, periodiccnt, 0); 1270 downheap (periodics, periodiccnt, 0);
1015 } 1271 }
1016 else 1272 else
1017 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 1273 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1018 1274
1019 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 1275 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1020 } 1276 }
1021} 1277}
1022 1278
1023static void 1279static void noinline
1024periodics_reschedule (EV_P) 1280periodics_reschedule (EV_P)
1025{ 1281{
1026 int i; 1282 int i;
1027 1283
1028 /* adjust periodics after time jump */ 1284 /* adjust periodics after time jump */
1029 for (i = 0; i < periodiccnt; ++i) 1285 for (i = 0; i < periodiccnt; ++i)
1030 { 1286 {
1031 struct ev_periodic *w = periodics [i]; 1287 ev_periodic *w = (ev_periodic *)periodics [i];
1032 1288
1033 if (w->reschedule_cb) 1289 if (w->reschedule_cb)
1034 ((WT)w)->at = w->reschedule_cb (w, rt_now); 1290 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1035 else if (w->interval) 1291 else if (w->interval)
1036 ((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval; 1292 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1037 } 1293 }
1038 1294
1039 /* now rebuild the heap */ 1295 /* now rebuild the heap */
1040 for (i = periodiccnt >> 1; i--; ) 1296 for (i = periodiccnt >> 1; i--; )
1041 downheap ((WT *)periodics, periodiccnt, i); 1297 downheap (periodics, periodiccnt, i);
1042} 1298}
1299#endif
1043 1300
1044inline int 1301#if EV_IDLE_ENABLE
1045time_update_monotonic (EV_P) 1302void inline_size
1303idle_reify (EV_P)
1046{ 1304{
1047 mn_now = get_clock (); 1305 if (expect_false (idleall))
1048
1049 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1050 {
1051 rt_now = rtmn_diff + mn_now;
1052 return 0;
1053 } 1306 {
1054 else 1307 int pri;
1308
1309 for (pri = NUMPRI; pri--; )
1310 {
1311 if (pendingcnt [pri])
1312 break;
1313
1314 if (idlecnt [pri])
1315 {
1316 queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
1317 break;
1318 }
1319 }
1055 { 1320 }
1056 now_floor = mn_now;
1057 rt_now = ev_time ();
1058 return 1;
1059 }
1060} 1321}
1322#endif
1061 1323
1062static void 1324void inline_speed
1063time_update (EV_P) 1325time_update (EV_P_ ev_tstamp max_block)
1064{ 1326{
1065 int i; 1327 int i;
1066 1328
1067#if EV_USE_MONOTONIC 1329#if EV_USE_MONOTONIC
1068 if (expect_true (have_monotonic)) 1330 if (expect_true (have_monotonic))
1069 { 1331 {
1070 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))
1071 { 1339 {
1072 ev_tstamp odiff = rtmn_diff; 1340 ev_rt_now = rtmn_diff + mn_now;
1341 return;
1342 }
1073 1343
1344 now_floor = mn_now;
1345 ev_rt_now = ev_time ();
1346
1074 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; )
1075 { 1356 {
1076 rtmn_diff = rt_now - mn_now; 1357 rtmn_diff = ev_rt_now - mn_now;
1077 1358
1078 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) 1359 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1079 return; /* all is well */ 1360 return; /* all is well */
1080 1361
1081 rt_now = ev_time (); 1362 ev_rt_now = ev_time ();
1082 mn_now = get_clock (); 1363 mn_now = get_clock ();
1083 now_floor = mn_now; 1364 now_floor = mn_now;
1084 } 1365 }
1085 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
1086 periodics_reschedule (EV_A); 1381 periodics_reschedule (EV_A);
1087 /* no timer adjustment, as the monotonic clock doesn't jump */ 1382#endif
1088 /* 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;
1089 } 1386 }
1090 }
1091 else
1092#endif
1093 {
1094 rt_now = ev_time ();
1095 1387
1096 if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
1097 {
1098 periodics_reschedule (EV_A);
1099
1100 /* adjust timers. this is easy, as the offset is the same for all */
1101 for (i = 0; i < timercnt; ++i)
1102 ((WT)timers [i])->at += rt_now - mn_now;
1103 }
1104
1105 mn_now = rt_now; 1388 mn_now = ev_rt_now;
1106 } 1389 }
1107} 1390}
1108 1391
1109void 1392void
1110ev_ref (EV_P) 1393ev_ref (EV_P)
… …
1121static int loop_done; 1404static int loop_done;
1122 1405
1123void 1406void
1124ev_loop (EV_P_ int flags) 1407ev_loop (EV_P_ int flags)
1125{ 1408{
1126 double block;
1127 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 */
1128 1414
1129 do 1415 do
1130 { 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
1131 /* queue check watchers (and execute them) */ 1436 /* queue prepare watchers (and execute them) */
1132 if (expect_false (preparecnt)) 1437 if (expect_false (preparecnt))
1133 { 1438 {
1134 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 1439 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1135 call_pending (EV_A); 1440 call_pending (EV_A);
1136 } 1441 }
1137 1442
1443 if (expect_false (!activecnt))
1444 break;
1445
1138 /* we might have forked, so reify kernel state if necessary */ 1446 /* we might have forked, so reify kernel state if necessary */
1139 if (expect_false (postfork)) 1447 if (expect_false (postfork))
1140 loop_fork (EV_A); 1448 loop_fork (EV_A);
1141 1449
1142 /* update fd-related kernel structures */ 1450 /* update fd-related kernel structures */
1143 fd_reify (EV_A); 1451 fd_reify (EV_A);
1144 1452
1145 /* calculate blocking time */ 1453 /* calculate blocking time */
1454 {
1455 ev_tstamp block;
1146 1456
1147 /* we only need this for !monotonic clock or timers, but as we basically 1457 if (expect_false (flags & EVLOOP_NONBLOCK || idleall || !activecnt))
1148 always have timers, we just calculate it always */ 1458 block = 0.; /* do not block at all */
1149#if EV_USE_MONOTONIC
1150 if (expect_true (have_monotonic))
1151 time_update_monotonic (EV_A);
1152 else 1459 else
1153#endif
1154 { 1460 {
1155 rt_now = ev_time (); 1461 /* update time to cancel out callback processing overhead */
1156 mn_now = rt_now; 1462 time_update (EV_A_ 1e100);
1157 }
1158 1463
1159 if (flags & EVLOOP_NONBLOCK || idlecnt)
1160 block = 0.;
1161 else
1162 {
1163 block = MAX_BLOCKTIME; 1464 block = MAX_BLOCKTIME;
1164 1465
1165 if (timercnt) 1466 if (timercnt)
1166 { 1467 {
1167 ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge; 1468 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1168 if (block > to) block = to; 1469 if (block > to) block = to;
1169 } 1470 }
1170 1471
1472#if EV_PERIODIC_ENABLE
1171 if (periodiccnt) 1473 if (periodiccnt)
1172 { 1474 {
1173 ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge; 1475 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1174 if (block > to) block = to; 1476 if (block > to) block = to;
1175 } 1477 }
1478#endif
1176 1479
1177 if (block < 0.) block = 0.; 1480 if (expect_false (block < 0.)) block = 0.;
1178 } 1481 }
1179 1482
1483 ++loop_count;
1180 method_poll (EV_A_ block); 1484 backend_poll (EV_A_ block);
1181 1485
1182 /* update rt_now, do magic */ 1486 /* update ev_rt_now, do magic */
1183 time_update (EV_A); 1487 time_update (EV_A_ block);
1488 }
1184 1489
1185 /* queue pending timers and reschedule them */ 1490 /* queue pending timers and reschedule them */
1186 timers_reify (EV_A); /* relative timers called last */ 1491 timers_reify (EV_A); /* relative timers called last */
1492#if EV_PERIODIC_ENABLE
1187 periodics_reify (EV_A); /* absolute timers called first */ 1493 periodics_reify (EV_A); /* absolute timers called first */
1494#endif
1188 1495
1496#if EV_IDLE_ENABLE
1189 /* queue idle watchers unless io or timers are pending */ 1497 /* queue idle watchers unless other events are pending */
1190 if (idlecnt && !any_pending (EV_A)) 1498 idle_reify (EV_A);
1191 queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); 1499#endif
1192 1500
1193 /* queue check watchers, to be executed first */ 1501 /* queue check watchers, to be executed first */
1194 if (checkcnt) 1502 if (expect_false (checkcnt))
1195 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 1503 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1196 1504
1197 call_pending (EV_A); 1505 call_pending (EV_A);
1506
1198 } 1507 }
1199 while (activecnt && !loop_done); 1508 while (expect_true (activecnt && !loop_done));
1200 1509
1201 if (loop_done != 2) 1510 if (loop_done == EVUNLOOP_ONE)
1202 loop_done = 0; 1511 loop_done = EVUNLOOP_CANCEL;
1203} 1512}
1204 1513
1205void 1514void
1206ev_unloop (EV_P_ int how) 1515ev_unloop (EV_P_ int how)
1207{ 1516{
1208 loop_done = how; 1517 loop_done = how;
1209} 1518}
1210 1519
1211/*****************************************************************************/ 1520/*****************************************************************************/
1212 1521
1213inline void 1522void inline_size
1214wlist_add (WL *head, WL elem) 1523wlist_add (WL *head, WL elem)
1215{ 1524{
1216 elem->next = *head; 1525 elem->next = *head;
1217 *head = elem; 1526 *head = elem;
1218} 1527}
1219 1528
1220inline void 1529void inline_size
1221wlist_del (WL *head, WL elem) 1530wlist_del (WL *head, WL elem)
1222{ 1531{
1223 while (*head) 1532 while (*head)
1224 { 1533 {
1225 if (*head == elem) 1534 if (*head == elem)
… …
1230 1539
1231 head = &(*head)->next; 1540 head = &(*head)->next;
1232 } 1541 }
1233} 1542}
1234 1543
1235inline void 1544void inline_speed
1236ev_clear_pending (EV_P_ W w) 1545clear_pending (EV_P_ W w)
1237{ 1546{
1238 if (w->pending) 1547 if (w->pending)
1239 { 1548 {
1240 pendings [ABSPRI (w)][w->pending - 1].w = 0; 1549 pendings [ABSPRI (w)][w->pending - 1].w = 0;
1241 w->pending = 0; 1550 w->pending = 0;
1242 } 1551 }
1243} 1552}
1244 1553
1245inline 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
1246ev_start (EV_P_ W w, int active) 1581ev_start (EV_P_ W w, int active)
1247{ 1582{
1248 if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; 1583 pri_adjust (EV_A_ w);
1249 if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1250
1251 w->active = active; 1584 w->active = active;
1252 ev_ref (EV_A); 1585 ev_ref (EV_A);
1253} 1586}
1254 1587
1255inline void 1588void inline_size
1256ev_stop (EV_P_ W w) 1589ev_stop (EV_P_ W w)
1257{ 1590{
1258 ev_unref (EV_A); 1591 ev_unref (EV_A);
1259 w->active = 0; 1592 w->active = 0;
1260} 1593}
1261 1594
1262/*****************************************************************************/ 1595/*****************************************************************************/
1263 1596
1264void 1597void noinline
1265ev_io_start (EV_P_ struct ev_io *w) 1598ev_io_start (EV_P_ ev_io *w)
1266{ 1599{
1267 int fd = w->fd; 1600 int fd = w->fd;
1268 1601
1269 if (ev_is_active (w)) 1602 if (expect_false (ev_is_active (w)))
1270 return; 1603 return;
1271 1604
1272 assert (("ev_io_start called with negative fd", fd >= 0)); 1605 assert (("ev_io_start called with negative fd", fd >= 0));
1273 1606
1274 ev_start (EV_A_ (W)w, 1); 1607 ev_start (EV_A_ (W)w, 1);
1275 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 1608 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1276 wlist_add ((WL *)&anfds[fd].head, (WL)w); 1609 wlist_add (&anfds[fd].head, (WL)w);
1277 1610
1278 fd_change (EV_A_ fd); 1611 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);
1612 w->events &= ~EV_IOFDSET;
1279} 1613}
1280 1614
1281void 1615void noinline
1282ev_io_stop (EV_P_ struct ev_io *w) 1616ev_io_stop (EV_P_ ev_io *w)
1283{ 1617{
1284 ev_clear_pending (EV_A_ (W)w); 1618 clear_pending (EV_A_ (W)w);
1285 if (!ev_is_active (w)) 1619 if (expect_false (!ev_is_active (w)))
1286 return; 1620 return;
1287 1621
1622 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1623
1288 wlist_del ((WL *)&anfds[w->fd].head, (WL)w); 1624 wlist_del (&anfds[w->fd].head, (WL)w);
1289 ev_stop (EV_A_ (W)w); 1625 ev_stop (EV_A_ (W)w);
1290 1626
1291 fd_change (EV_A_ w->fd); 1627 fd_change (EV_A_ w->fd, 1);
1292} 1628}
1293 1629
1294void 1630void noinline
1295ev_timer_start (EV_P_ struct ev_timer *w) 1631ev_timer_start (EV_P_ ev_timer *w)
1632{
1633 if (expect_false (ev_is_active (w)))
1634 return;
1635
1636 ((WT)w)->at += mn_now;
1637
1638 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1639
1640 ev_start (EV_A_ (W)w, ++timercnt);
1641 array_needsize (WT, timers, timermax, timercnt, EMPTY2);
1642 timers [timercnt - 1] = (WT)w;
1643 upheap (timers, timercnt - 1);
1644
1645 /*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
1646}
1647
1648void noinline
1649ev_timer_stop (EV_P_ ev_timer *w)
1650{
1651 clear_pending (EV_A_ (W)w);
1652 if (expect_false (!ev_is_active (w)))
1653 return;
1654
1655 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w));
1656
1657 {
1658 int active = ((W)w)->active;
1659
1660 if (expect_true (--active < --timercnt))
1661 {
1662 timers [active] = timers [timercnt];
1663 adjustheap (timers, timercnt, active);
1664 }
1665 }
1666
1667 ((WT)w)->at -= mn_now;
1668
1669 ev_stop (EV_A_ (W)w);
1670}
1671
1672void noinline
1673ev_timer_again (EV_P_ ev_timer *w)
1296{ 1674{
1297 if (ev_is_active (w)) 1675 if (ev_is_active (w))
1298 return;
1299
1300 ((WT)w)->at += mn_now;
1301
1302 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1303
1304 ev_start (EV_A_ (W)w, ++timercnt);
1305 array_needsize (struct ev_timer *, timers, timermax, timercnt, (void));
1306 timers [timercnt - 1] = w;
1307 upheap ((WT *)timers, timercnt - 1);
1308
1309 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1310}
1311
1312void
1313ev_timer_stop (EV_P_ struct ev_timer *w)
1314{
1315 ev_clear_pending (EV_A_ (W)w);
1316 if (!ev_is_active (w))
1317 return;
1318
1319 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1320
1321 if (((W)w)->active < timercnt--)
1322 {
1323 timers [((W)w)->active - 1] = timers [timercnt];
1324 downheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1325 }
1326
1327 ((WT)w)->at = w->repeat;
1328
1329 ev_stop (EV_A_ (W)w);
1330}
1331
1332void
1333ev_timer_again (EV_P_ struct ev_timer *w)
1334{
1335 if (ev_is_active (w))
1336 { 1676 {
1337 if (w->repeat) 1677 if (w->repeat)
1678 {
1679 ((WT)w)->at = mn_now + w->repeat;
1338 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1, mn_now + w->repeat); 1680 adjustheap (timers, timercnt, ((W)w)->active - 1);
1681 }
1339 else 1682 else
1340 ev_timer_stop (EV_A_ w); 1683 ev_timer_stop (EV_A_ w);
1341 } 1684 }
1342 else if (w->repeat) 1685 else if (w->repeat)
1686 {
1687 w->at = w->repeat;
1343 ev_timer_start (EV_A_ w); 1688 ev_timer_start (EV_A_ w);
1689 }
1344} 1690}
1345 1691
1346void 1692#if EV_PERIODIC_ENABLE
1693void noinline
1347ev_periodic_start (EV_P_ struct ev_periodic *w) 1694ev_periodic_start (EV_P_ ev_periodic *w)
1348{ 1695{
1349 if (ev_is_active (w)) 1696 if (expect_false (ev_is_active (w)))
1350 return; 1697 return;
1351 1698
1352 if (w->reschedule_cb) 1699 if (w->reschedule_cb)
1353 ((WT)w)->at = w->reschedule_cb (w, rt_now); 1700 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1354 else if (w->interval) 1701 else if (w->interval)
1355 { 1702 {
1356 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.));
1357 /* 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 */
1358 ((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;
1359 } 1706 }
1707 else
1708 ((WT)w)->at = w->offset;
1360 1709
1361 ev_start (EV_A_ (W)w, ++periodiccnt); 1710 ev_start (EV_A_ (W)w, ++periodiccnt);
1362 array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void)); 1711 array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2);
1363 periodics [periodiccnt - 1] = w; 1712 periodics [periodiccnt - 1] = (WT)w;
1364 upheap ((WT *)periodics, periodiccnt - 1); 1713 upheap (periodics, periodiccnt - 1);
1365 1714
1366 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1715 /*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
1367} 1716}
1368 1717
1369void 1718void noinline
1370ev_periodic_stop (EV_P_ struct ev_periodic *w) 1719ev_periodic_stop (EV_P_ ev_periodic *w)
1371{ 1720{
1372 ev_clear_pending (EV_A_ (W)w); 1721 clear_pending (EV_A_ (W)w);
1373 if (!ev_is_active (w)) 1722 if (expect_false (!ev_is_active (w)))
1374 return; 1723 return;
1375 1724
1376 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1725 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w));
1377 1726
1378 if (((W)w)->active < periodiccnt--) 1727 {
1728 int active = ((W)w)->active;
1729
1730 if (expect_true (--active < --periodiccnt))
1379 { 1731 {
1380 periodics [((W)w)->active - 1] = periodics [periodiccnt]; 1732 periodics [active] = periodics [periodiccnt];
1381 downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1); 1733 adjustheap (periodics, periodiccnt, active);
1382 } 1734 }
1735 }
1383 1736
1384 ev_stop (EV_A_ (W)w); 1737 ev_stop (EV_A_ (W)w);
1385} 1738}
1386 1739
1387void 1740void noinline
1388ev_periodic_again (EV_P_ struct ev_periodic *w) 1741ev_periodic_again (EV_P_ ev_periodic *w)
1389{ 1742{
1390 /* TODO: use adjustheap and recalculation */ 1743 /* TODO: use adjustheap and recalculation */
1391 ev_periodic_stop (EV_A_ w); 1744 ev_periodic_stop (EV_A_ w);
1392 ev_periodic_start (EV_A_ w); 1745 ev_periodic_start (EV_A_ w);
1393} 1746}
1394 1747#endif
1395void
1396ev_idle_start (EV_P_ struct ev_idle *w)
1397{
1398 if (ev_is_active (w))
1399 return;
1400
1401 ev_start (EV_A_ (W)w, ++idlecnt);
1402 array_needsize (struct ev_idle *, idles, idlemax, idlecnt, (void));
1403 idles [idlecnt - 1] = w;
1404}
1405
1406void
1407ev_idle_stop (EV_P_ struct ev_idle *w)
1408{
1409 ev_clear_pending (EV_A_ (W)w);
1410 if (ev_is_active (w))
1411 return;
1412
1413 idles [((W)w)->active - 1] = idles [--idlecnt];
1414 ev_stop (EV_A_ (W)w);
1415}
1416
1417void
1418ev_prepare_start (EV_P_ struct ev_prepare *w)
1419{
1420 if (ev_is_active (w))
1421 return;
1422
1423 ev_start (EV_A_ (W)w, ++preparecnt);
1424 array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, (void));
1425 prepares [preparecnt - 1] = w;
1426}
1427
1428void
1429ev_prepare_stop (EV_P_ struct ev_prepare *w)
1430{
1431 ev_clear_pending (EV_A_ (W)w);
1432 if (ev_is_active (w))
1433 return;
1434
1435 prepares [((W)w)->active - 1] = prepares [--preparecnt];
1436 ev_stop (EV_A_ (W)w);
1437}
1438
1439void
1440ev_check_start (EV_P_ struct ev_check *w)
1441{
1442 if (ev_is_active (w))
1443 return;
1444
1445 ev_start (EV_A_ (W)w, ++checkcnt);
1446 array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void));
1447 checks [checkcnt - 1] = w;
1448}
1449
1450void
1451ev_check_stop (EV_P_ struct ev_check *w)
1452{
1453 ev_clear_pending (EV_A_ (W)w);
1454 if (ev_is_active (w))
1455 return;
1456
1457 checks [((W)w)->active - 1] = checks [--checkcnt];
1458 ev_stop (EV_A_ (W)w);
1459}
1460 1748
1461#ifndef SA_RESTART 1749#ifndef SA_RESTART
1462# define SA_RESTART 0 1750# define SA_RESTART 0
1463#endif 1751#endif
1464 1752
1465void 1753void noinline
1466ev_signal_start (EV_P_ struct ev_signal *w) 1754ev_signal_start (EV_P_ ev_signal *w)
1467{ 1755{
1468#if EV_MULTIPLICITY 1756#if EV_MULTIPLICITY
1469 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));
1470#endif 1758#endif
1471 if (ev_is_active (w)) 1759 if (expect_false (ev_is_active (w)))
1472 return; 1760 return;
1473 1761
1474 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));
1475 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
1476 ev_start (EV_A_ (W)w, 1); 1778 ev_start (EV_A_ (W)w, 1);
1477 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1478 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); 1779 wlist_add (&signals [w->signum - 1].head, (WL)w);
1479 1780
1480 if (!((WL)w)->next) 1781 if (!((WL)w)->next)
1481 { 1782 {
1482#if WIN32 1783#if _WIN32
1483 signal (w->signum, sighandler); 1784 signal (w->signum, sighandler);
1484#else 1785#else
1485 struct sigaction sa; 1786 struct sigaction sa;
1486 sa.sa_handler = sighandler; 1787 sa.sa_handler = sighandler;
1487 sigfillset (&sa.sa_mask); 1788 sigfillset (&sa.sa_mask);
… …
1489 sigaction (w->signum, &sa, 0); 1790 sigaction (w->signum, &sa, 0);
1490#endif 1791#endif
1491 } 1792 }
1492} 1793}
1493 1794
1494void 1795void noinline
1495ev_signal_stop (EV_P_ struct ev_signal *w) 1796ev_signal_stop (EV_P_ ev_signal *w)
1496{ 1797{
1497 ev_clear_pending (EV_A_ (W)w); 1798 clear_pending (EV_A_ (W)w);
1498 if (!ev_is_active (w)) 1799 if (expect_false (!ev_is_active (w)))
1499 return; 1800 return;
1500 1801
1501 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); 1802 wlist_del (&signals [w->signum - 1].head, (WL)w);
1502 ev_stop (EV_A_ (W)w); 1803 ev_stop (EV_A_ (W)w);
1503 1804
1504 if (!signals [w->signum - 1].head) 1805 if (!signals [w->signum - 1].head)
1505 signal (w->signum, SIG_DFL); 1806 signal (w->signum, SIG_DFL);
1506} 1807}
1507 1808
1508void 1809void
1509ev_child_start (EV_P_ struct ev_child *w) 1810ev_child_start (EV_P_ ev_child *w)
1510{ 1811{
1511#if EV_MULTIPLICITY 1812#if EV_MULTIPLICITY
1512 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));
1513#endif 1814#endif
1514 if (ev_is_active (w)) 1815 if (expect_false (ev_is_active (w)))
1515 return; 1816 return;
1516 1817
1517 ev_start (EV_A_ (W)w, 1); 1818 ev_start (EV_A_ (W)w, 1);
1518 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1819 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1519} 1820}
1520 1821
1521void 1822void
1522ev_child_stop (EV_P_ struct ev_child *w) 1823ev_child_stop (EV_P_ ev_child *w)
1523{ 1824{
1524 ev_clear_pending (EV_A_ (W)w); 1825 clear_pending (EV_A_ (W)w);
1525 if (ev_is_active (w)) 1826 if (expect_false (!ev_is_active (w)))
1526 return; 1827 return;
1527 1828
1528 wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1829 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1529 ev_stop (EV_A_ (W)w); 1830 ev_stop (EV_A_ (W)w);
1530} 1831}
1531 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
1532/*****************************************************************************/ 2255/*****************************************************************************/
1533 2256
1534struct ev_once 2257struct ev_once
1535{ 2258{
1536 struct ev_io io; 2259 ev_io io;
1537 struct ev_timer to; 2260 ev_timer to;
1538 void (*cb)(int revents, void *arg); 2261 void (*cb)(int revents, void *arg);
1539 void *arg; 2262 void *arg;
1540}; 2263};
1541 2264
1542static void 2265static void
… …
1551 2274
1552 cb (revents, arg); 2275 cb (revents, arg);
1553} 2276}
1554 2277
1555static void 2278static void
1556once_cb_io (EV_P_ struct ev_io *w, int revents) 2279once_cb_io (EV_P_ ev_io *w, int revents)
1557{ 2280{
1558 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);
1559} 2282}
1560 2283
1561static void 2284static void
1562once_cb_to (EV_P_ struct ev_timer *w, int revents) 2285once_cb_to (EV_P_ ev_timer *w, int revents)
1563{ 2286{
1564 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);
1565} 2288}
1566 2289
1567void 2290void
1568ev_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)
1569{ 2292{
1570 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 2293 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1571 2294
1572 if (!once) 2295 if (expect_false (!once))
2296 {
1573 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 2297 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1574 else 2298 return;
1575 { 2299 }
2300
1576 once->cb = cb; 2301 once->cb = cb;
1577 once->arg = arg; 2302 once->arg = arg;
1578 2303
1579 ev_init (&once->io, once_cb_io); 2304 ev_init (&once->io, once_cb_io);
1580 if (fd >= 0) 2305 if (fd >= 0)
1581 { 2306 {
1582 ev_io_set (&once->io, fd, events); 2307 ev_io_set (&once->io, fd, events);
1583 ev_io_start (EV_A_ &once->io); 2308 ev_io_start (EV_A_ &once->io);
1584 } 2309 }
1585 2310
1586 ev_init (&once->to, once_cb_to); 2311 ev_init (&once->to, once_cb_to);
1587 if (timeout >= 0.) 2312 if (timeout >= 0.)
1588 { 2313 {
1589 ev_timer_set (&once->to, timeout, 0.); 2314 ev_timer_set (&once->to, timeout, 0.);
1590 ev_timer_start (EV_A_ &once->to); 2315 ev_timer_start (EV_A_ &once->to);
1591 }
1592 } 2316 }
1593} 2317}
1594 2318
2319#ifdef __cplusplus
2320}
2321#endif
2322

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