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Comparing libev/ev.c (file contents):
Revision 1.79 by root, Fri Nov 9 15:15:20 2007 UTC vs.
Revision 1.178 by root, Tue Dec 11 18:36:11 2007 UTC

… …
26 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
29 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 */ 30 */
31
32#ifdef __cplusplus
33extern "C" {
34#endif
35
31#ifndef EV_STANDALONE 36#ifndef EV_STANDALONE
37# ifdef EV_CONFIG_H
38# include EV_CONFIG_H
39# else
32# include "config.h" 40# include "config.h"
41# endif
33 42
34# if HAVE_CLOCK_GETTIME 43# if HAVE_CLOCK_GETTIME
44# ifndef EV_USE_MONOTONIC
35# define EV_USE_MONOTONIC 1 45# define EV_USE_MONOTONIC 1
46# endif
47# ifndef EV_USE_REALTIME
36# define EV_USE_REALTIME 1 48# define EV_USE_REALTIME 1
49# endif
50# else
51# ifndef EV_USE_MONOTONIC
52# define EV_USE_MONOTONIC 0
53# endif
54# ifndef EV_USE_REALTIME
55# define EV_USE_REALTIME 0
56# endif
37# endif 57# endif
38 58
59# ifndef EV_USE_SELECT
39# if HAVE_SELECT && HAVE_SYS_SELECT_H 60# if HAVE_SELECT && HAVE_SYS_SELECT_H
40# define EV_USE_SELECT 1 61# define EV_USE_SELECT 1
62# else
63# define EV_USE_SELECT 0
64# endif
41# endif 65# endif
42 66
67# ifndef EV_USE_POLL
43# if HAVE_POLL && HAVE_POLL_H 68# if HAVE_POLL && HAVE_POLL_H
44# define EV_USE_POLL 1 69# define EV_USE_POLL 1
70# else
71# define EV_USE_POLL 0
72# endif
45# endif 73# endif
46 74
75# ifndef EV_USE_EPOLL
47# if HAVE_EPOLL && HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H 76# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
48# define EV_USE_EPOLL 1 77# define EV_USE_EPOLL 1
78# else
79# define EV_USE_EPOLL 0
80# endif
49# endif 81# endif
50 82
83# ifndef EV_USE_KQUEUE
51# if HAVE_KQUEUE && HAVE_WORKING_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H 84# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H
52# define EV_USE_KQUEUE 1 85# define EV_USE_KQUEUE 1
86# else
87# define EV_USE_KQUEUE 0
88# endif
89# endif
90
91# ifndef EV_USE_PORT
92# if HAVE_PORT_H && HAVE_PORT_CREATE
93# define EV_USE_PORT 1
94# else
95# define EV_USE_PORT 0
96# endif
97# endif
98
99# ifndef EV_USE_INOTIFY
100# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
101# define EV_USE_INOTIFY 1
102# else
103# define EV_USE_INOTIFY 0
104# endif
53# endif 105# endif
54 106
55#endif 107#endif
56 108
57#include <math.h> 109#include <math.h>
… …
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
123#ifdef EV_H
124# include EV_H
125#else
126# include "ev.h"
127#endif
128
71#ifndef WIN32 129#ifndef _WIN32
72# include <unistd.h>
73# include <sys/time.h> 130# include <sys/time.h>
74# 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
75#endif 138# endif
139#endif
140
76/**/ 141/**/
77 142
78#ifndef EV_USE_MONOTONIC 143#ifndef EV_USE_MONOTONIC
79# 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
80#endif 149#endif
81 150
82#ifndef EV_USE_SELECT 151#ifndef EV_USE_SELECT
83# define EV_USE_SELECT 1 152# define EV_USE_SELECT 1
84#endif 153#endif
85 154
86#ifndef EV_USE_POLL 155#ifndef EV_USE_POLL
87# 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
88#endif 161#endif
89 162
90#ifndef EV_USE_EPOLL 163#ifndef EV_USE_EPOLL
91# define EV_USE_EPOLL 0 164# define EV_USE_EPOLL 0
92#endif 165#endif
93 166
94#ifndef EV_USE_KQUEUE 167#ifndef EV_USE_KQUEUE
95# define EV_USE_KQUEUE 0 168# define EV_USE_KQUEUE 0
96#endif 169#endif
97 170
171#ifndef EV_USE_PORT
172# define EV_USE_PORT 0
173#endif
174
98#ifndef EV_USE_WIN32 175#ifndef EV_USE_INOTIFY
99# ifdef WIN32 176# define EV_USE_INOTIFY 0
100# define EV_USE_WIN32 0 /* it does not exist, use select */ 177#endif
101# undef EV_USE_SELECT 178
102# define EV_USE_SELECT 1 179#ifndef EV_PID_HASHSIZE
180# if EV_MINIMAL
181# define EV_PID_HASHSIZE 1
103# else 182# else
104# define EV_USE_WIN32 0 183# define EV_PID_HASHSIZE 16
105# endif 184# endif
106#endif 185#endif
107 186
108#ifndef EV_USE_REALTIME 187#ifndef EV_INOTIFY_HASHSIZE
109# 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
110#endif 193#endif
111 194
112/**/ 195/**/
113 196
114#ifndef CLOCK_MONOTONIC 197#ifndef CLOCK_MONOTONIC
… …
119#ifndef CLOCK_REALTIME 202#ifndef CLOCK_REALTIME
120# undef EV_USE_REALTIME 203# undef EV_USE_REALTIME
121# define EV_USE_REALTIME 0 204# define EV_USE_REALTIME 0
122#endif 205#endif
123 206
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
124/**/ 219/**/
125 220
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
126#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) */
127#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) */
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 */ 233/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
130
131#include "ev.h"
132 234
133#if __GNUC__ >= 3 235#if __GNUC__ >= 3
134# define expect(expr,value) __builtin_expect ((expr),(value)) 236# define expect(expr,value) __builtin_expect ((expr),(value))
135# define inline inline 237# define noinline __attribute__ ((noinline))
136#else 238#else
137# define expect(expr,value) (expr) 239# define expect(expr,value) (expr)
138# define inline static 240# define noinline
241# if __STDC_VERSION__ < 199901L
242# define inline
243# endif
139#endif 244#endif
140 245
141#define expect_false(expr) expect ((expr) != 0, 0) 246#define expect_false(expr) expect ((expr) != 0, 0)
142#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
143 255
144#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 256#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
145#define ABSPRI(w) ((w)->priority - EV_MINPRI) 257#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
146 258
259#define EMPTY /* required for microsofts broken pseudo-c compiler */
260#define EMPTY2(a,b) /* used to suppress some warnings */
261
147typedef struct ev_watcher *W; 262typedef ev_watcher *W;
148typedef struct ev_watcher_list *WL; 263typedef ev_watcher_list *WL;
149typedef struct ev_watcher_time *WT; 264typedef ev_watcher_time *WT;
150 265
151static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 266static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
152 267
268#ifdef _WIN32
153#include "ev_win32.c" 269# include "ev_win32.c"
270#endif
154 271
155/*****************************************************************************/ 272/*****************************************************************************/
156 273
157static void (*syserr_cb)(const char *msg); 274static void (*syserr_cb)(const char *msg);
158 275
276void
159void ev_set_syserr_cb (void (*cb)(const char *msg)) 277ev_set_syserr_cb (void (*cb)(const char *msg))
160{ 278{
161 syserr_cb = cb; 279 syserr_cb = cb;
162} 280}
163 281
164static void 282static void noinline
165syserr (const char *msg) 283syserr (const char *msg)
166{ 284{
167 if (!msg) 285 if (!msg)
168 msg = "(libev) system error"; 286 msg = "(libev) system error";
169 287
… …
176 } 294 }
177} 295}
178 296
179static void *(*alloc)(void *ptr, long size); 297static void *(*alloc)(void *ptr, long size);
180 298
299void
181void ev_set_allocator (void *(*cb)(void *ptr, long size)) 300ev_set_allocator (void *(*cb)(void *ptr, long size))
182{ 301{
183 alloc = cb; 302 alloc = cb;
184} 303}
185 304
186static void * 305inline_speed void *
187ev_realloc (void *ptr, long size) 306ev_realloc (void *ptr, long size)
188{ 307{
189 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size); 308 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
190 309
191 if (!ptr && size) 310 if (!ptr && size)
… …
205typedef struct 324typedef struct
206{ 325{
207 WL head; 326 WL head;
208 unsigned char events; 327 unsigned char events;
209 unsigned char reify; 328 unsigned char reify;
329#if EV_SELECT_IS_WINSOCKET
330 SOCKET handle;
331#endif
210} ANFD; 332} ANFD;
211 333
212typedef struct 334typedef struct
213{ 335{
214 W w; 336 W w;
215 int events; 337 int events;
216} ANPENDING; 338} ANPENDING;
217 339
340#if EV_USE_INOTIFY
341typedef struct
342{
343 WL head;
344} ANFS;
345#endif
346
218#if EV_MULTIPLICITY 347#if EV_MULTIPLICITY
219 348
220struct ev_loop 349 struct ev_loop
221{ 350 {
351 ev_tstamp ev_rt_now;
352 #define ev_rt_now ((loop)->ev_rt_now)
222# define VAR(name,decl) decl; 353 #define VAR(name,decl) decl;
223# include "ev_vars.h" 354 #include "ev_vars.h"
224};
225# undef VAR 355 #undef VAR
356 };
226# 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;
227 361
228#else 362#else
229 363
364 ev_tstamp ev_rt_now;
230# define VAR(name,decl) static decl; 365 #define VAR(name,decl) static decl;
231# include "ev_vars.h" 366 #include "ev_vars.h"
232# undef VAR 367 #undef VAR
368
369 static int ev_default_loop_ptr;
233 370
234#endif 371#endif
235 372
236/*****************************************************************************/ 373/*****************************************************************************/
237 374
238inline ev_tstamp 375ev_tstamp
239ev_time (void) 376ev_time (void)
240{ 377{
241#if EV_USE_REALTIME 378#if EV_USE_REALTIME
242 struct timespec ts; 379 struct timespec ts;
243 clock_gettime (CLOCK_REALTIME, &ts); 380 clock_gettime (CLOCK_REALTIME, &ts);
… …
247 gettimeofday (&tv, 0); 384 gettimeofday (&tv, 0);
248 return tv.tv_sec + tv.tv_usec * 1e-6; 385 return tv.tv_sec + tv.tv_usec * 1e-6;
249#endif 386#endif
250} 387}
251 388
252inline ev_tstamp 389ev_tstamp inline_size
253get_clock (void) 390get_clock (void)
254{ 391{
255#if EV_USE_MONOTONIC 392#if EV_USE_MONOTONIC
256 if (expect_true (have_monotonic)) 393 if (expect_true (have_monotonic))
257 { 394 {
… …
262#endif 399#endif
263 400
264 return ev_time (); 401 return ev_time ();
265} 402}
266 403
404#if EV_MULTIPLICITY
267ev_tstamp 405ev_tstamp
268ev_now (EV_P) 406ev_now (EV_P)
269{ 407{
270 return rt_now; 408 return ev_rt_now;
271} 409}
410#endif
272 411
273#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}
274 439
275#define array_needsize(type,base,cur,cnt,init) \ 440#define array_needsize(type,base,cur,cnt,init) \
276 if (expect_false ((cnt) > cur)) \ 441 if (expect_false ((cnt) > (cur))) \
277 { \ 442 { \
278 int newcnt = cur; \ 443 int ocur_ = (cur); \
279 do \ 444 (base) = (type *)array_realloc \
280 { \ 445 (sizeof (type), (base), &(cur), (cnt)); \
281 newcnt = array_roundsize (type, newcnt << 1); \ 446 init ((base) + (ocur_), (cur) - ocur_); \
282 } \
283 while ((cnt) > newcnt); \
284 \
285 base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\
286 init (base + cur, newcnt - cur); \
287 cur = newcnt; \
288 } 447 }
289 448
449#if 0
290#define array_slim(type,stem) \ 450#define array_slim(type,stem) \
291 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 451 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
292 { \ 452 { \
293 stem ## max = array_roundsize (stem ## cnt >> 1); \ 453 stem ## max = array_roundsize (stem ## cnt >> 1); \
294 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\ 454 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
295 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 455 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
296 } 456 }
297 457#endif
298/* microsoft's pseudo-c is quite far from C as the rest of the world and the standard knows it */
299/* bringing us everlasting joy in form of stupid extra macros that are not required in C */
300#define array_free_microshit(stem) \
301 ev_free (stem ## s); stem ## cnt = stem ## max = 0;
302 458
303#define array_free(stem, idx) \ 459#define array_free(stem, idx) \
304 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;
305 461
306/*****************************************************************************/ 462/*****************************************************************************/
307 463
308static void 464void noinline
465ev_feed_event (EV_P_ void *w, int revents)
466{
467 W w_ = (W)w;
468 int pri = ABSPRI (w_);
469
470 if (expect_false (w_->pending))
471 pendings [pri][w_->pending - 1].events |= revents;
472 else
473 {
474 w_->pending = ++pendingcnt [pri];
475 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
476 pendings [pri][w_->pending - 1].w = w_;
477 pendings [pri][w_->pending - 1].events = revents;
478 }
479}
480
481void inline_size
482queue_events (EV_P_ W *events, int eventcnt, int type)
483{
484 int i;
485
486 for (i = 0; i < eventcnt; ++i)
487 ev_feed_event (EV_A_ events [i], type);
488}
489
490/*****************************************************************************/
491
492void inline_size
309anfds_init (ANFD *base, int count) 493anfds_init (ANFD *base, int count)
310{ 494{
311 while (count--) 495 while (count--)
312 { 496 {
313 base->head = 0; 497 base->head = 0;
… …
316 500
317 ++base; 501 ++base;
318 } 502 }
319} 503}
320 504
321void 505void inline_speed
322ev_feed_event (EV_P_ void *w, int revents)
323{
324 W w_ = (W)w;
325
326 if (w_->pending)
327 {
328 pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
329 return;
330 }
331
332 w_->pending = ++pendingcnt [ABSPRI (w_)];
333 array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], (void));
334 pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
335 pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
336}
337
338static void
339queue_events (EV_P_ W *events, int eventcnt, int type)
340{
341 int i;
342
343 for (i = 0; i < eventcnt; ++i)
344 ev_feed_event (EV_A_ events [i], type);
345}
346
347inline void
348fd_event (EV_P_ int fd, int revents) 506fd_event (EV_P_ int fd, int revents)
349{ 507{
350 ANFD *anfd = anfds + fd; 508 ANFD *anfd = anfds + fd;
351 struct ev_io *w; 509 ev_io *w;
352 510
353 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)
354 { 512 {
355 int ev = w->events & revents; 513 int ev = w->events & revents;
356 514
357 if (ev) 515 if (ev)
358 ev_feed_event (EV_A_ (W)w, ev); 516 ev_feed_event (EV_A_ (W)w, ev);
… …
360} 518}
361 519
362void 520void
363ev_feed_fd_event (EV_P_ int fd, int revents) 521ev_feed_fd_event (EV_P_ int fd, int revents)
364{ 522{
523 if (fd >= 0 && fd < anfdmax)
365 fd_event (EV_A_ fd, revents); 524 fd_event (EV_A_ fd, revents);
366} 525}
367 526
368/*****************************************************************************/ 527void inline_size
369
370static void
371fd_reify (EV_P) 528fd_reify (EV_P)
372{ 529{
373 int i; 530 int i;
374 531
375 for (i = 0; i < fdchangecnt; ++i) 532 for (i = 0; i < fdchangecnt; ++i)
376 { 533 {
377 int fd = fdchanges [i]; 534 int fd = fdchanges [i];
378 ANFD *anfd = anfds + fd; 535 ANFD *anfd = anfds + fd;
379 struct ev_io *w; 536 ev_io *w;
380 537
381 int events = 0; 538 int events = 0;
382 539
383 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)
384 events |= w->events; 541 events |= w->events;
385 542
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
386 anfd->reify = 0; 552 anfd->reify = 0;
387 553
388 method_modify (EV_A_ fd, anfd->events, events); 554 backend_modify (EV_A_ fd, anfd->events, events);
389 anfd->events = events; 555 anfd->events = events;
390 } 556 }
391 557
392 fdchangecnt = 0; 558 fdchangecnt = 0;
393} 559}
394 560
395static void 561void inline_size
396fd_change (EV_P_ int fd) 562fd_change (EV_P_ int fd)
397{ 563{
398 if (anfds [fd].reify) 564 if (expect_false (anfds [fd].reify))
399 return; 565 return;
400 566
401 anfds [fd].reify = 1; 567 anfds [fd].reify = 1;
402 568
403 ++fdchangecnt; 569 ++fdchangecnt;
404 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void)); 570 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
405 fdchanges [fdchangecnt - 1] = fd; 571 fdchanges [fdchangecnt - 1] = fd;
406} 572}
407 573
408static void 574void inline_speed
409fd_kill (EV_P_ int fd) 575fd_kill (EV_P_ int fd)
410{ 576{
411 struct ev_io *w; 577 ev_io *w;
412 578
413 while ((w = (struct ev_io *)anfds [fd].head)) 579 while ((w = (ev_io *)anfds [fd].head))
414 { 580 {
415 ev_io_stop (EV_A_ w); 581 ev_io_stop (EV_A_ w);
416 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 582 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
417 } 583 }
418} 584}
419 585
420static int 586int inline_size
421fd_valid (int fd) 587fd_valid (int fd)
422{ 588{
423#ifdef WIN32 589#ifdef _WIN32
424 return !!win32_get_osfhandle (fd); 590 return _get_osfhandle (fd) != -1;
425#else 591#else
426 return fcntl (fd, F_GETFD) != -1; 592 return fcntl (fd, F_GETFD) != -1;
427#endif 593#endif
428} 594}
429 595
430/* called on EBADF to verify fds */ 596/* called on EBADF to verify fds */
431static void 597static void noinline
432fd_ebadf (EV_P) 598fd_ebadf (EV_P)
433{ 599{
434 int fd; 600 int fd;
435 601
436 for (fd = 0; fd < anfdmax; ++fd) 602 for (fd = 0; fd < anfdmax; ++fd)
… …
438 if (!fd_valid (fd) == -1 && errno == EBADF) 604 if (!fd_valid (fd) == -1 && errno == EBADF)
439 fd_kill (EV_A_ fd); 605 fd_kill (EV_A_ fd);
440} 606}
441 607
442/* called on ENOMEM in select/poll to kill some fds and retry */ 608/* called on ENOMEM in select/poll to kill some fds and retry */
443static void 609static void noinline
444fd_enomem (EV_P) 610fd_enomem (EV_P)
445{ 611{
446 int fd; 612 int fd;
447 613
448 for (fd = anfdmax; fd--; ) 614 for (fd = anfdmax; fd--; )
… …
451 fd_kill (EV_A_ fd); 617 fd_kill (EV_A_ fd);
452 return; 618 return;
453 } 619 }
454} 620}
455 621
456/* usually called after fork if method needs to re-arm all fds from scratch */ 622/* usually called after fork if backend needs to re-arm all fds from scratch */
457static void 623static void noinline
458fd_rearm_all (EV_P) 624fd_rearm_all (EV_P)
459{ 625{
460 int fd; 626 int fd;
461 627
462 /* this should be highly optimised to not do anything but set a flag */
463 for (fd = 0; fd < anfdmax; ++fd) 628 for (fd = 0; fd < anfdmax; ++fd)
464 if (anfds [fd].events) 629 if (anfds [fd].events)
465 { 630 {
466 anfds [fd].events = 0; 631 anfds [fd].events = 0;
467 fd_change (EV_A_ fd); 632 fd_change (EV_A_ fd);
468 } 633 }
469} 634}
470 635
471/*****************************************************************************/ 636/*****************************************************************************/
472 637
473static void 638void inline_speed
474upheap (WT *heap, int k) 639upheap (WT *heap, int k)
475{ 640{
476 WT w = heap [k]; 641 WT w = heap [k];
477 642
478 while (k && heap [k >> 1]->at > w->at) 643 while (k && heap [k >> 1]->at > w->at)
… …
485 heap [k] = w; 650 heap [k] = w;
486 ((W)heap [k])->active = k + 1; 651 ((W)heap [k])->active = k + 1;
487 652
488} 653}
489 654
490static void 655void inline_speed
491downheap (WT *heap, int N, int k) 656downheap (WT *heap, int N, int k)
492{ 657{
493 WT w = heap [k]; 658 WT w = heap [k];
494 659
495 while (k < (N >> 1)) 660 while (k < (N >> 1))
… …
509 674
510 heap [k] = w; 675 heap [k] = w;
511 ((W)heap [k])->active = k + 1; 676 ((W)heap [k])->active = k + 1;
512} 677}
513 678
679void inline_size
680adjustheap (WT *heap, int N, int k)
681{
682 upheap (heap, k);
683 downheap (heap, N, k);
684}
685
514/*****************************************************************************/ 686/*****************************************************************************/
515 687
516typedef struct 688typedef struct
517{ 689{
518 WL head; 690 WL head;
… …
522static ANSIG *signals; 694static ANSIG *signals;
523static int signalmax; 695static int signalmax;
524 696
525static int sigpipe [2]; 697static int sigpipe [2];
526static sig_atomic_t volatile gotsig; 698static sig_atomic_t volatile gotsig;
527static struct ev_io sigev; 699static ev_io sigev;
528 700
529static void 701void inline_size
530signals_init (ANSIG *base, int count) 702signals_init (ANSIG *base, int count)
531{ 703{
532 while (count--) 704 while (count--)
533 { 705 {
534 base->head = 0; 706 base->head = 0;
… …
539} 711}
540 712
541static void 713static void
542sighandler (int signum) 714sighandler (int signum)
543{ 715{
544#if WIN32 716#if _WIN32
545 signal (signum, sighandler); 717 signal (signum, sighandler);
546#endif 718#endif
547 719
548 signals [signum - 1].gotsig = 1; 720 signals [signum - 1].gotsig = 1;
549 721
550 if (!gotsig) 722 if (!gotsig)
551 { 723 {
552 int old_errno = errno; 724 int old_errno = errno;
553 gotsig = 1; 725 gotsig = 1;
554#ifdef WIN32
555 send (sigpipe [1], &signum, 1, MSG_DONTWAIT);
556#else
557 write (sigpipe [1], &signum, 1); 726 write (sigpipe [1], &signum, 1);
558#endif
559 errno = old_errno; 727 errno = old_errno;
560 } 728 }
561} 729}
562 730
563void 731void noinline
564ev_feed_signal_event (EV_P_ int signum) 732ev_feed_signal_event (EV_P_ int signum)
565{ 733{
734 WL w;
735
566#if EV_MULTIPLICITY 736#if EV_MULTIPLICITY
567 assert (("feeding signal events is only supported in the default loop", loop == default_loop)); 737 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
568#endif 738#endif
569 739
570 --signum; 740 --signum;
571 741
572 if (signum < 0 || signum >= signalmax) 742 if (signum < 0 || signum >= signalmax)
… …
577 for (w = signals [signum].head; w; w = w->next) 747 for (w = signals [signum].head; w; w = w->next)
578 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 748 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
579} 749}
580 750
581static void 751static void
582sigcb (EV_P_ struct ev_io *iow, int revents) 752sigcb (EV_P_ ev_io *iow, int revents)
583{ 753{
584 WL w;
585 int signum; 754 int signum;
586 755
587#ifdef WIN32
588 recv (sigpipe [0], &revents, 1, MSG_DONTWAIT);
589#else
590 read (sigpipe [0], &revents, 1); 756 read (sigpipe [0], &revents, 1);
591#endif
592 gotsig = 0; 757 gotsig = 0;
593 758
594 for (signum = signalmax; signum--; ) 759 for (signum = signalmax; signum--; )
595 if (signals [signum].gotsig) 760 if (signals [signum].gotsig)
596 sigevent (EV_A_ signum + 1); 761 ev_feed_signal_event (EV_A_ signum + 1);
597} 762}
598 763
599static void 764void inline_speed
765fd_intern (int fd)
766{
767#ifdef _WIN32
768 int arg = 1;
769 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
770#else
771 fcntl (fd, F_SETFD, FD_CLOEXEC);
772 fcntl (fd, F_SETFL, O_NONBLOCK);
773#endif
774}
775
776static void noinline
600siginit (EV_P) 777siginit (EV_P)
601{ 778{
602#ifndef WIN32 779 fd_intern (sigpipe [0]);
603 fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC); 780 fd_intern (sigpipe [1]);
604 fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
605
606 /* rather than sort out wether we really need nb, set it */
607 fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
608 fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
609#endif
610 781
611 ev_io_set (&sigev, sigpipe [0], EV_READ); 782 ev_io_set (&sigev, sigpipe [0], EV_READ);
612 ev_io_start (EV_A_ &sigev); 783 ev_io_start (EV_A_ &sigev);
613 ev_unref (EV_A); /* child watcher should not keep loop alive */ 784 ev_unref (EV_A); /* child watcher should not keep loop alive */
614} 785}
615 786
616/*****************************************************************************/ 787/*****************************************************************************/
617 788
618static struct ev_child *childs [PID_HASHSIZE]; 789static ev_child *childs [EV_PID_HASHSIZE];
619 790
620#ifndef WIN32 791#ifndef _WIN32
621 792
622static struct ev_signal childev; 793static ev_signal childev;
794
795void inline_speed
796child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
797{
798 ev_child *w;
799
800 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
801 if (w->pid == pid || !w->pid)
802 {
803 ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */
804 w->rpid = pid;
805 w->rstatus = status;
806 ev_feed_event (EV_A_ (W)w, EV_CHILD);
807 }
808}
623 809
624#ifndef WCONTINUED 810#ifndef WCONTINUED
625# define WCONTINUED 0 811# define WCONTINUED 0
626#endif 812#endif
627 813
628static void 814static void
629child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
630{
631 struct ev_child *w;
632
633 for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
634 if (w->pid == pid || !w->pid)
635 {
636 ev_priority (w) = ev_priority (sw); /* need to do it *now* */
637 w->rpid = pid;
638 w->rstatus = status;
639 ev_feed_event (EV_A_ (W)w, EV_CHILD);
640 }
641}
642
643static void
644childcb (EV_P_ struct ev_signal *sw, int revents) 815childcb (EV_P_ ev_signal *sw, int revents)
645{ 816{
646 int pid, status; 817 int pid, status;
647 818
819 /* some systems define WCONTINUED but then fail to support it (linux 2.4) */
648 if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) 820 if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
649 { 821 if (!WCONTINUED
822 || errno != EINVAL
823 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
824 return;
825
650 /* make sure we are called again until all childs have been reaped */ 826 /* make sure we are called again until all childs have been reaped */
827 /* we need to do it this way so that the callback gets called before we continue */
651 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 828 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
652 829
653 child_reap (EV_A_ sw, pid, pid, status); 830 child_reap (EV_A_ sw, pid, pid, status);
831 if (EV_PID_HASHSIZE > 1)
654 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */ 832 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
655 }
656} 833}
657 834
658#endif 835#endif
659 836
660/*****************************************************************************/ 837/*****************************************************************************/
661 838
839#if EV_USE_PORT
840# include "ev_port.c"
841#endif
662#if EV_USE_KQUEUE 842#if EV_USE_KQUEUE
663# include "ev_kqueue.c" 843# include "ev_kqueue.c"
664#endif 844#endif
665#if EV_USE_EPOLL 845#if EV_USE_EPOLL
666# include "ev_epoll.c" 846# include "ev_epoll.c"
… …
683{ 863{
684 return EV_VERSION_MINOR; 864 return EV_VERSION_MINOR;
685} 865}
686 866
687/* return true if we are running with elevated privileges and should ignore env variables */ 867/* return true if we are running with elevated privileges and should ignore env variables */
688static int 868int inline_size
689enable_secure (void) 869enable_secure (void)
690{ 870{
691#ifdef WIN32 871#ifdef _WIN32
692 return 0; 872 return 0;
693#else 873#else
694 return getuid () != geteuid () 874 return getuid () != geteuid ()
695 || getgid () != getegid (); 875 || getgid () != getegid ();
696#endif 876#endif
697} 877}
698 878
699int 879unsigned int
700ev_method (EV_P) 880ev_supported_backends (void)
701{ 881{
702 return method; 882 unsigned int flags = 0;
703}
704 883
705static void 884 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
706loop_init (EV_P_ int methods) 885 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
886 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
887 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
888 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
889
890 return flags;
891}
892
893unsigned int
894ev_recommended_backends (void)
707{ 895{
708 if (!method) 896 unsigned int flags = ev_supported_backends ();
897
898#ifndef __NetBSD__
899 /* kqueue is borked on everything but netbsd apparently */
900 /* it usually doesn't work correctly on anything but sockets and pipes */
901 flags &= ~EVBACKEND_KQUEUE;
902#endif
903#ifdef __APPLE__
904 // flags &= ~EVBACKEND_KQUEUE; for documentation
905 flags &= ~EVBACKEND_POLL;
906#endif
907
908 return flags;
909}
910
911unsigned int
912ev_embeddable_backends (void)
913{
914 return EVBACKEND_EPOLL
915 | EVBACKEND_KQUEUE
916 | EVBACKEND_PORT;
917}
918
919unsigned int
920ev_backend (EV_P)
921{
922 return backend;
923}
924
925unsigned int
926ev_loop_count (EV_P)
927{
928 return loop_count;
929}
930
931static void noinline
932loop_init (EV_P_ unsigned int flags)
933{
934 if (!backend)
709 { 935 {
710#if EV_USE_MONOTONIC 936#if EV_USE_MONOTONIC
711 { 937 {
712 struct timespec ts; 938 struct timespec ts;
713 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 939 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
714 have_monotonic = 1; 940 have_monotonic = 1;
715 } 941 }
716#endif 942#endif
717 943
718 rt_now = ev_time (); 944 ev_rt_now = ev_time ();
719 mn_now = get_clock (); 945 mn_now = get_clock ();
720 now_floor = mn_now; 946 now_floor = mn_now;
721 rtmn_diff = rt_now - mn_now; 947 rtmn_diff = ev_rt_now - mn_now;
722 948
723 if (methods == EVMETHOD_AUTO) 949 /* pid check not overridable via env */
724 if (!enable_secure () && getenv ("LIBEV_METHODS")) 950#ifndef _WIN32
951 if (flags & EVFLAG_FORKCHECK)
952 curpid = getpid ();
953#endif
954
955 if (!(flags & EVFLAG_NOENV)
956 && !enable_secure ()
957 && getenv ("LIBEV_FLAGS"))
725 methods = atoi (getenv ("LIBEV_METHODS")); 958 flags = atoi (getenv ("LIBEV_FLAGS"));
726 else
727 methods = EVMETHOD_ANY;
728 959
729 method = 0; 960 if (!(flags & 0x0000ffffUL))
961 flags |= ev_recommended_backends ();
962
963 backend = 0;
964 backend_fd = -1;
730#if EV_USE_WIN32 965#if EV_USE_INOTIFY
731 if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods); 966 fs_fd = -2;
967#endif
968
969#if EV_USE_PORT
970 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
732#endif 971#endif
733#if EV_USE_KQUEUE 972#if EV_USE_KQUEUE
734 if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods); 973 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
735#endif 974#endif
736#if EV_USE_EPOLL 975#if EV_USE_EPOLL
737 if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods); 976 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
738#endif 977#endif
739#if EV_USE_POLL 978#if EV_USE_POLL
740 if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods); 979 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
741#endif 980#endif
742#if EV_USE_SELECT 981#if EV_USE_SELECT
743 if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods); 982 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
744#endif 983#endif
745 984
746 ev_watcher_init (&sigev, sigcb); 985 ev_init (&sigev, sigcb);
747 ev_set_priority (&sigev, EV_MAXPRI); 986 ev_set_priority (&sigev, EV_MAXPRI);
748 } 987 }
749} 988}
750 989
751void 990static void noinline
752loop_destroy (EV_P) 991loop_destroy (EV_P)
753{ 992{
754 int i; 993 int i;
755 994
756#if EV_USE_WIN32 995#if EV_USE_INOTIFY
757 if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A); 996 if (fs_fd >= 0)
997 close (fs_fd);
998#endif
999
1000 if (backend_fd >= 0)
1001 close (backend_fd);
1002
1003#if EV_USE_PORT
1004 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
758#endif 1005#endif
759#if EV_USE_KQUEUE 1006#if EV_USE_KQUEUE
760 if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A); 1007 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
761#endif 1008#endif
762#if EV_USE_EPOLL 1009#if EV_USE_EPOLL
763 if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A); 1010 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
764#endif 1011#endif
765#if EV_USE_POLL 1012#if EV_USE_POLL
766 if (method == EVMETHOD_POLL ) poll_destroy (EV_A); 1013 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
767#endif 1014#endif
768#if EV_USE_SELECT 1015#if EV_USE_SELECT
769 if (method == EVMETHOD_SELECT) select_destroy (EV_A); 1016 if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
770#endif 1017#endif
771 1018
772 for (i = NUMPRI; i--; ) 1019 for (i = NUMPRI; i--; )
1020 {
773 array_free (pending, [i]); 1021 array_free (pending, [i]);
1022#if EV_IDLE_ENABLE
1023 array_free (idle, [i]);
1024#endif
1025 }
774 1026
775 /* have to use the microsoft-never-gets-it-right macro */ 1027 /* have to use the microsoft-never-gets-it-right macro */
776 array_free_microshit (fdchange); 1028 array_free (fdchange, EMPTY);
777 array_free_microshit (timer); 1029 array_free (timer, EMPTY);
778 array_free_microshit (periodic); 1030#if EV_PERIODIC_ENABLE
779 array_free_microshit (idle); 1031 array_free (periodic, EMPTY);
780 array_free_microshit (prepare); 1032#endif
781 array_free_microshit (check); 1033 array_free (prepare, EMPTY);
1034 array_free (check, EMPTY);
782 1035
783 method = 0; 1036 backend = 0;
784} 1037}
785 1038
786static void 1039void inline_size infy_fork (EV_P);
1040
1041void inline_size
787loop_fork (EV_P) 1042loop_fork (EV_P)
788{ 1043{
1044#if EV_USE_PORT
1045 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1046#endif
1047#if EV_USE_KQUEUE
1048 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
1049#endif
789#if EV_USE_EPOLL 1050#if EV_USE_EPOLL
790 if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A); 1051 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
791#endif 1052#endif
792#if EV_USE_KQUEUE 1053#if EV_USE_INOTIFY
793 if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A); 1054 infy_fork (EV_A);
794#endif 1055#endif
795 1056
796 if (ev_is_active (&sigev)) 1057 if (ev_is_active (&sigev))
797 { 1058 {
798 /* default loop */ 1059 /* default loop */
… …
811 postfork = 0; 1072 postfork = 0;
812} 1073}
813 1074
814#if EV_MULTIPLICITY 1075#if EV_MULTIPLICITY
815struct ev_loop * 1076struct ev_loop *
816ev_loop_new (int methods) 1077ev_loop_new (unsigned int flags)
817{ 1078{
818 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 1079 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
819 1080
820 memset (loop, 0, sizeof (struct ev_loop)); 1081 memset (loop, 0, sizeof (struct ev_loop));
821 1082
822 loop_init (EV_A_ methods); 1083 loop_init (EV_A_ flags);
823 1084
824 if (ev_method (EV_A)) 1085 if (ev_backend (EV_A))
825 return loop; 1086 return loop;
826 1087
827 return 0; 1088 return 0;
828} 1089}
829 1090
… …
841} 1102}
842 1103
843#endif 1104#endif
844 1105
845#if EV_MULTIPLICITY 1106#if EV_MULTIPLICITY
846struct ev_loop default_loop_struct;
847static struct ev_loop *default_loop;
848
849struct ev_loop * 1107struct ev_loop *
1108ev_default_loop_init (unsigned int flags)
850#else 1109#else
851static int default_loop;
852
853int 1110int
1111ev_default_loop (unsigned int flags)
854#endif 1112#endif
855ev_default_loop (int methods)
856{ 1113{
857 if (sigpipe [0] == sigpipe [1]) 1114 if (sigpipe [0] == sigpipe [1])
858 if (pipe (sigpipe)) 1115 if (pipe (sigpipe))
859 return 0; 1116 return 0;
860 1117
861 if (!default_loop) 1118 if (!ev_default_loop_ptr)
862 { 1119 {
863#if EV_MULTIPLICITY 1120#if EV_MULTIPLICITY
864 struct ev_loop *loop = default_loop = &default_loop_struct; 1121 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
865#else 1122#else
866 default_loop = 1; 1123 ev_default_loop_ptr = 1;
867#endif 1124#endif
868 1125
869 loop_init (EV_A_ methods); 1126 loop_init (EV_A_ flags);
870 1127
871 if (ev_method (EV_A)) 1128 if (ev_backend (EV_A))
872 { 1129 {
873 siginit (EV_A); 1130 siginit (EV_A);
874 1131
875#ifndef WIN32 1132#ifndef _WIN32
876 ev_signal_init (&childev, childcb, SIGCHLD); 1133 ev_signal_init (&childev, childcb, SIGCHLD);
877 ev_set_priority (&childev, EV_MAXPRI); 1134 ev_set_priority (&childev, EV_MAXPRI);
878 ev_signal_start (EV_A_ &childev); 1135 ev_signal_start (EV_A_ &childev);
879 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1136 ev_unref (EV_A); /* child watcher should not keep loop alive */
880#endif 1137#endif
881 } 1138 }
882 else 1139 else
883 default_loop = 0; 1140 ev_default_loop_ptr = 0;
884 } 1141 }
885 1142
886 return default_loop; 1143 return ev_default_loop_ptr;
887} 1144}
888 1145
889void 1146void
890ev_default_destroy (void) 1147ev_default_destroy (void)
891{ 1148{
892#if EV_MULTIPLICITY 1149#if EV_MULTIPLICITY
893 struct ev_loop *loop = default_loop; 1150 struct ev_loop *loop = ev_default_loop_ptr;
894#endif 1151#endif
895 1152
896#ifndef WIN32 1153#ifndef _WIN32
897 ev_ref (EV_A); /* child watcher */ 1154 ev_ref (EV_A); /* child watcher */
898 ev_signal_stop (EV_A_ &childev); 1155 ev_signal_stop (EV_A_ &childev);
899#endif 1156#endif
900 1157
901 ev_ref (EV_A); /* signal watcher */ 1158 ev_ref (EV_A); /* signal watcher */
… …
909 1166
910void 1167void
911ev_default_fork (void) 1168ev_default_fork (void)
912{ 1169{
913#if EV_MULTIPLICITY 1170#if EV_MULTIPLICITY
914 struct ev_loop *loop = default_loop; 1171 struct ev_loop *loop = ev_default_loop_ptr;
915#endif 1172#endif
916 1173
917 if (method) 1174 if (backend)
918 postfork = 1; 1175 postfork = 1;
919} 1176}
920 1177
921/*****************************************************************************/ 1178/*****************************************************************************/
922 1179
923static int 1180void
924any_pending (EV_P) 1181ev_invoke (EV_P_ void *w, int revents)
925{ 1182{
926 int pri; 1183 EV_CB_INVOKE ((W)w, revents);
927
928 for (pri = NUMPRI; pri--; )
929 if (pendingcnt [pri])
930 return 1;
931
932 return 0;
933} 1184}
934 1185
935static void 1186void inline_speed
936call_pending (EV_P) 1187call_pending (EV_P)
937{ 1188{
938 int pri; 1189 int pri;
939 1190
940 for (pri = NUMPRI; pri--; ) 1191 for (pri = NUMPRI; pri--; )
941 while (pendingcnt [pri]) 1192 while (pendingcnt [pri])
942 { 1193 {
943 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 1194 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
944 1195
945 if (p->w) 1196 if (expect_true (p->w))
946 { 1197 {
1198 /*assert (("non-pending watcher on pending list", p->w->pending));*/
1199
947 p->w->pending = 0; 1200 p->w->pending = 0;
948 p->w->cb (EV_A_ p->w, p->events); 1201 EV_CB_INVOKE (p->w, p->events);
949 } 1202 }
950 } 1203 }
951} 1204}
952 1205
953static void 1206void inline_size
954timers_reify (EV_P) 1207timers_reify (EV_P)
955{ 1208{
956 while (timercnt && ((WT)timers [0])->at <= mn_now) 1209 while (timercnt && ((WT)timers [0])->at <= mn_now)
957 { 1210 {
958 struct ev_timer *w = timers [0]; 1211 ev_timer *w = timers [0];
959 1212
960 assert (("inactive timer on timer heap detected", ev_is_active (w))); 1213 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
961 1214
962 /* first reschedule or stop timer */ 1215 /* first reschedule or stop timer */
963 if (w->repeat) 1216 if (w->repeat)
964 { 1217 {
965 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 1218 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1219
966 ((WT)w)->at = mn_now + w->repeat; 1220 ((WT)w)->at += w->repeat;
1221 if (((WT)w)->at < mn_now)
1222 ((WT)w)->at = mn_now;
1223
967 downheap ((WT *)timers, timercnt, 0); 1224 downheap ((WT *)timers, timercnt, 0);
968 } 1225 }
969 else 1226 else
970 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ 1227 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
971 1228
972 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); 1229 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
973 } 1230 }
974} 1231}
975 1232
976static void 1233#if EV_PERIODIC_ENABLE
1234void inline_size
977periodics_reify (EV_P) 1235periodics_reify (EV_P)
978{ 1236{
979 while (periodiccnt && ((WT)periodics [0])->at <= rt_now) 1237 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
980 { 1238 {
981 struct ev_periodic *w = periodics [0]; 1239 ev_periodic *w = periodics [0];
982 1240
983 assert (("inactive timer on periodic heap detected", ev_is_active (w))); 1241 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
984 1242
985 /* first reschedule or stop timer */ 1243 /* first reschedule or stop timer */
986 if (w->reschedule_cb) 1244 if (w->reschedule_cb)
987 { 1245 {
988 ev_tstamp at = ((WT)w)->at = w->reschedule_cb (w, rt_now + 0.0001); 1246 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
989
990 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > rt_now)); 1247 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
991 downheap ((WT *)periodics, periodiccnt, 0); 1248 downheap ((WT *)periodics, periodiccnt, 0);
992 } 1249 }
993 else if (w->interval) 1250 else if (w->interval)
994 { 1251 {
995 ((WT)w)->at += floor ((rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval; 1252 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1253 if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
996 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > rt_now)); 1254 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
997 downheap ((WT *)periodics, periodiccnt, 0); 1255 downheap ((WT *)periodics, periodiccnt, 0);
998 } 1256 }
999 else 1257 else
1000 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 1258 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1001 1259
1002 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 1260 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1003 } 1261 }
1004} 1262}
1005 1263
1006static void 1264static void noinline
1007periodics_reschedule (EV_P) 1265periodics_reschedule (EV_P)
1008{ 1266{
1009 int i; 1267 int i;
1010 1268
1011 /* adjust periodics after time jump */ 1269 /* adjust periodics after time jump */
1012 for (i = 0; i < periodiccnt; ++i) 1270 for (i = 0; i < periodiccnt; ++i)
1013 { 1271 {
1014 struct ev_periodic *w = periodics [i]; 1272 ev_periodic *w = periodics [i];
1015 1273
1016 if (w->reschedule_cb) 1274 if (w->reschedule_cb)
1017 ((WT)w)->at = w->reschedule_cb (w, rt_now); 1275 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1018 else if (w->interval) 1276 else if (w->interval)
1019 ((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval; 1277 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1020 } 1278 }
1021 1279
1022 /* now rebuild the heap */ 1280 /* now rebuild the heap */
1023 for (i = periodiccnt >> 1; i--; ) 1281 for (i = periodiccnt >> 1; i--; )
1024 downheap ((WT *)periodics, periodiccnt, i); 1282 downheap ((WT *)periodics, periodiccnt, i);
1025} 1283}
1284#endif
1026 1285
1027inline int 1286#if EV_IDLE_ENABLE
1028time_update_monotonic (EV_P) 1287void inline_size
1288idle_reify (EV_P)
1029{ 1289{
1030 mn_now = get_clock (); 1290 if (expect_false (idleall))
1031
1032 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1033 {
1034 rt_now = rtmn_diff + mn_now;
1035 return 0;
1036 } 1291 {
1037 else 1292 int pri;
1293
1294 for (pri = NUMPRI; pri--; )
1295 {
1296 if (pendingcnt [pri])
1297 break;
1298
1299 if (idlecnt [pri])
1300 {
1301 queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
1302 break;
1303 }
1304 }
1038 { 1305 }
1039 now_floor = mn_now;
1040 rt_now = ev_time ();
1041 return 1;
1042 }
1043} 1306}
1307#endif
1044 1308
1045static void 1309void inline_speed
1046time_update (EV_P) 1310time_update (EV_P_ ev_tstamp max_block)
1047{ 1311{
1048 int i; 1312 int i;
1049 1313
1050#if EV_USE_MONOTONIC 1314#if EV_USE_MONOTONIC
1051 if (expect_true (have_monotonic)) 1315 if (expect_true (have_monotonic))
1052 { 1316 {
1053 if (time_update_monotonic (EV_A)) 1317 ev_tstamp odiff = rtmn_diff;
1318
1319 mn_now = get_clock ();
1320
1321 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
1322 /* interpolate in the meantime */
1323 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1054 { 1324 {
1055 ev_tstamp odiff = rtmn_diff; 1325 ev_rt_now = rtmn_diff + mn_now;
1326 return;
1327 }
1056 1328
1329 now_floor = mn_now;
1330 ev_rt_now = ev_time ();
1331
1057 for (i = 4; --i; ) /* loop a few times, before making important decisions */ 1332 /* loop a few times, before making important decisions.
1333 * on the choice of "4": one iteration isn't enough,
1334 * in case we get preempted during the calls to
1335 * ev_time and get_clock. a second call is almost guaranteed
1336 * to succeed in that case, though. and looping a few more times
1337 * doesn't hurt either as we only do this on time-jumps or
1338 * in the unlikely event of having been preempted here.
1339 */
1340 for (i = 4; --i; )
1058 { 1341 {
1059 rtmn_diff = rt_now - mn_now; 1342 rtmn_diff = ev_rt_now - mn_now;
1060 1343
1061 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) 1344 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1062 return; /* all is well */ 1345 return; /* all is well */
1063 1346
1064 rt_now = ev_time (); 1347 ev_rt_now = ev_time ();
1065 mn_now = get_clock (); 1348 mn_now = get_clock ();
1066 now_floor = mn_now; 1349 now_floor = mn_now;
1067 } 1350 }
1068 1351
1352# if EV_PERIODIC_ENABLE
1353 periodics_reschedule (EV_A);
1354# endif
1355 /* no timer adjustment, as the monotonic clock doesn't jump */
1356 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1357 }
1358 else
1359#endif
1360 {
1361 ev_rt_now = ev_time ();
1362
1363 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1364 {
1365#if EV_PERIODIC_ENABLE
1069 periodics_reschedule (EV_A); 1366 periodics_reschedule (EV_A);
1070 /* no timer adjustment, as the monotonic clock doesn't jump */ 1367#endif
1071 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */ 1368 /* adjust timers. this is easy, as the offset is the same for all of them */
1369 for (i = 0; i < timercnt; ++i)
1370 ((WT)timers [i])->at += ev_rt_now - mn_now;
1072 } 1371 }
1073 }
1074 else
1075#endif
1076 {
1077 rt_now = ev_time ();
1078 1372
1079 if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
1080 {
1081 periodics_reschedule (EV_A);
1082
1083 /* adjust timers. this is easy, as the offset is the same for all */
1084 for (i = 0; i < timercnt; ++i)
1085 ((WT)timers [i])->at += rt_now - mn_now;
1086 }
1087
1088 mn_now = rt_now; 1373 mn_now = ev_rt_now;
1089 } 1374 }
1090} 1375}
1091 1376
1092void 1377void
1093ev_ref (EV_P) 1378ev_ref (EV_P)
… …
1104static int loop_done; 1389static int loop_done;
1105 1390
1106void 1391void
1107ev_loop (EV_P_ int flags) 1392ev_loop (EV_P_ int flags)
1108{ 1393{
1109 double block;
1110 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0; 1394 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
1395 ? EVUNLOOP_ONE
1396 : EVUNLOOP_CANCEL;
1397
1398 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
1111 1399
1112 do 1400 do
1113 { 1401 {
1402#ifndef _WIN32
1403 if (expect_false (curpid)) /* penalise the forking check even more */
1404 if (expect_false (getpid () != curpid))
1405 {
1406 curpid = getpid ();
1407 postfork = 1;
1408 }
1409#endif
1410
1411#if EV_FORK_ENABLE
1412 /* we might have forked, so queue fork handlers */
1413 if (expect_false (postfork))
1414 if (forkcnt)
1415 {
1416 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1417 call_pending (EV_A);
1418 }
1419#endif
1420
1114 /* queue check watchers (and execute them) */ 1421 /* queue prepare watchers (and execute them) */
1115 if (expect_false (preparecnt)) 1422 if (expect_false (preparecnt))
1116 { 1423 {
1117 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 1424 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1118 call_pending (EV_A); 1425 call_pending (EV_A);
1119 } 1426 }
1120 1427
1428 if (expect_false (!activecnt))
1429 break;
1430
1121 /* we might have forked, so reify kernel state if necessary */ 1431 /* we might have forked, so reify kernel state if necessary */
1122 if (expect_false (postfork)) 1432 if (expect_false (postfork))
1123 loop_fork (EV_A); 1433 loop_fork (EV_A);
1124 1434
1125 /* update fd-related kernel structures */ 1435 /* update fd-related kernel structures */
1126 fd_reify (EV_A); 1436 fd_reify (EV_A);
1127 1437
1128 /* calculate blocking time */ 1438 /* calculate blocking time */
1439 {
1440 ev_tstamp block;
1129 1441
1130 /* we only need this for !monotonic clock or timers, but as we basically 1442 if (expect_false (flags & EVLOOP_NONBLOCK || idleall || !activecnt))
1131 always have timers, we just calculate it always */ 1443 block = 0.; /* do not block at all */
1132#if EV_USE_MONOTONIC
1133 if (expect_true (have_monotonic))
1134 time_update_monotonic (EV_A);
1135 else 1444 else
1136#endif
1137 { 1445 {
1138 rt_now = ev_time (); 1446 /* update time to cancel out callback processing overhead */
1139 mn_now = rt_now; 1447 time_update (EV_A_ 1e100);
1140 }
1141 1448
1142 if (flags & EVLOOP_NONBLOCK || idlecnt)
1143 block = 0.;
1144 else
1145 {
1146 block = MAX_BLOCKTIME; 1449 block = MAX_BLOCKTIME;
1147 1450
1148 if (timercnt) 1451 if (timercnt)
1149 { 1452 {
1150 ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge; 1453 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1151 if (block > to) block = to; 1454 if (block > to) block = to;
1152 } 1455 }
1153 1456
1457#if EV_PERIODIC_ENABLE
1154 if (periodiccnt) 1458 if (periodiccnt)
1155 { 1459 {
1156 ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge; 1460 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1157 if (block > to) block = to; 1461 if (block > to) block = to;
1158 } 1462 }
1463#endif
1159 1464
1160 if (block < 0.) block = 0.; 1465 if (expect_false (block < 0.)) block = 0.;
1161 } 1466 }
1162 1467
1468 ++loop_count;
1163 method_poll (EV_A_ block); 1469 backend_poll (EV_A_ block);
1164 1470
1165 /* update rt_now, do magic */ 1471 /* update ev_rt_now, do magic */
1166 time_update (EV_A); 1472 time_update (EV_A_ block);
1473 }
1167 1474
1168 /* queue pending timers and reschedule them */ 1475 /* queue pending timers and reschedule them */
1169 timers_reify (EV_A); /* relative timers called last */ 1476 timers_reify (EV_A); /* relative timers called last */
1477#if EV_PERIODIC_ENABLE
1170 periodics_reify (EV_A); /* absolute timers called first */ 1478 periodics_reify (EV_A); /* absolute timers called first */
1479#endif
1171 1480
1481#if EV_IDLE_ENABLE
1172 /* queue idle watchers unless io or timers are pending */ 1482 /* queue idle watchers unless other events are pending */
1173 if (idlecnt && !any_pending (EV_A)) 1483 idle_reify (EV_A);
1174 queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); 1484#endif
1175 1485
1176 /* queue check watchers, to be executed first */ 1486 /* queue check watchers, to be executed first */
1177 if (checkcnt) 1487 if (expect_false (checkcnt))
1178 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 1488 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1179 1489
1180 call_pending (EV_A); 1490 call_pending (EV_A);
1491
1181 } 1492 }
1182 while (activecnt && !loop_done); 1493 while (expect_true (activecnt && !loop_done));
1183 1494
1184 if (loop_done != 2) 1495 if (loop_done == EVUNLOOP_ONE)
1185 loop_done = 0; 1496 loop_done = EVUNLOOP_CANCEL;
1186} 1497}
1187 1498
1188void 1499void
1189ev_unloop (EV_P_ int how) 1500ev_unloop (EV_P_ int how)
1190{ 1501{
1191 loop_done = how; 1502 loop_done = how;
1192} 1503}
1193 1504
1194/*****************************************************************************/ 1505/*****************************************************************************/
1195 1506
1196inline void 1507void inline_size
1197wlist_add (WL *head, WL elem) 1508wlist_add (WL *head, WL elem)
1198{ 1509{
1199 elem->next = *head; 1510 elem->next = *head;
1200 *head = elem; 1511 *head = elem;
1201} 1512}
1202 1513
1203inline void 1514void inline_size
1204wlist_del (WL *head, WL elem) 1515wlist_del (WL *head, WL elem)
1205{ 1516{
1206 while (*head) 1517 while (*head)
1207 { 1518 {
1208 if (*head == elem) 1519 if (*head == elem)
… …
1213 1524
1214 head = &(*head)->next; 1525 head = &(*head)->next;
1215 } 1526 }
1216} 1527}
1217 1528
1218inline void 1529void inline_speed
1219ev_clear_pending (EV_P_ W w) 1530clear_pending (EV_P_ W w)
1220{ 1531{
1221 if (w->pending) 1532 if (w->pending)
1222 { 1533 {
1223 pendings [ABSPRI (w)][w->pending - 1].w = 0; 1534 pendings [ABSPRI (w)][w->pending - 1].w = 0;
1224 w->pending = 0; 1535 w->pending = 0;
1225 } 1536 }
1226} 1537}
1227 1538
1228inline void 1539int
1540ev_clear_pending (EV_P_ void *w)
1541{
1542 W w_ = (W)w;
1543 int pending = w_->pending;
1544
1545 if (expect_true (pending))
1546 {
1547 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
1548 w_->pending = 0;
1549 p->w = 0;
1550 return p->events;
1551 }
1552 else
1553 return 0;
1554}
1555
1556void inline_size
1557pri_adjust (EV_P_ W w)
1558{
1559 int pri = w->priority;
1560 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1561 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1562 w->priority = pri;
1563}
1564
1565void inline_speed
1229ev_start (EV_P_ W w, int active) 1566ev_start (EV_P_ W w, int active)
1230{ 1567{
1231 if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; 1568 pri_adjust (EV_A_ w);
1232 if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1233
1234 w->active = active; 1569 w->active = active;
1235 ev_ref (EV_A); 1570 ev_ref (EV_A);
1236} 1571}
1237 1572
1238inline void 1573void inline_size
1239ev_stop (EV_P_ W w) 1574ev_stop (EV_P_ W w)
1240{ 1575{
1241 ev_unref (EV_A); 1576 ev_unref (EV_A);
1242 w->active = 0; 1577 w->active = 0;
1243} 1578}
1244 1579
1245/*****************************************************************************/ 1580/*****************************************************************************/
1246 1581
1247void 1582void noinline
1248ev_io_start (EV_P_ struct ev_io *w) 1583ev_io_start (EV_P_ ev_io *w)
1249{ 1584{
1250 int fd = w->fd; 1585 int fd = w->fd;
1251 1586
1252 if (ev_is_active (w)) 1587 if (expect_false (ev_is_active (w)))
1253 return; 1588 return;
1254 1589
1255 assert (("ev_io_start called with negative fd", fd >= 0)); 1590 assert (("ev_io_start called with negative fd", fd >= 0));
1256 1591
1257 ev_start (EV_A_ (W)w, 1); 1592 ev_start (EV_A_ (W)w, 1);
… …
1259 wlist_add ((WL *)&anfds[fd].head, (WL)w); 1594 wlist_add ((WL *)&anfds[fd].head, (WL)w);
1260 1595
1261 fd_change (EV_A_ fd); 1596 fd_change (EV_A_ fd);
1262} 1597}
1263 1598
1264void 1599void noinline
1265ev_io_stop (EV_P_ struct ev_io *w) 1600ev_io_stop (EV_P_ ev_io *w)
1266{ 1601{
1267 ev_clear_pending (EV_A_ (W)w); 1602 clear_pending (EV_A_ (W)w);
1268 if (!ev_is_active (w)) 1603 if (expect_false (!ev_is_active (w)))
1269 return; 1604 return;
1605
1606 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1270 1607
1271 wlist_del ((WL *)&anfds[w->fd].head, (WL)w); 1608 wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
1272 ev_stop (EV_A_ (W)w); 1609 ev_stop (EV_A_ (W)w);
1273 1610
1274 fd_change (EV_A_ w->fd); 1611 fd_change (EV_A_ w->fd);
1275} 1612}
1276 1613
1277void 1614void noinline
1278ev_timer_start (EV_P_ struct ev_timer *w) 1615ev_timer_start (EV_P_ ev_timer *w)
1279{ 1616{
1280 if (ev_is_active (w)) 1617 if (expect_false (ev_is_active (w)))
1281 return; 1618 return;
1282 1619
1283 ((WT)w)->at += mn_now; 1620 ((WT)w)->at += mn_now;
1284 1621
1285 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 1622 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1286 1623
1287 ev_start (EV_A_ (W)w, ++timercnt); 1624 ev_start (EV_A_ (W)w, ++timercnt);
1288 array_needsize (struct ev_timer *, timers, timermax, timercnt, (void)); 1625 array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);
1289 timers [timercnt - 1] = w; 1626 timers [timercnt - 1] = w;
1290 upheap ((WT *)timers, timercnt - 1); 1627 upheap ((WT *)timers, timercnt - 1);
1291 1628
1629 /*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
1630}
1631
1632void noinline
1633ev_timer_stop (EV_P_ ev_timer *w)
1634{
1635 clear_pending (EV_A_ (W)w);
1636 if (expect_false (!ev_is_active (w)))
1637 return;
1638
1292 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 1639 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1293}
1294 1640
1295void 1641 {
1296ev_timer_stop (EV_P_ struct ev_timer *w) 1642 int active = ((W)w)->active;
1297{
1298 ev_clear_pending (EV_A_ (W)w);
1299 if (!ev_is_active (w))
1300 return;
1301 1643
1302 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 1644 if (expect_true (--active < --timercnt))
1303
1304 if (((W)w)->active < timercnt--)
1305 { 1645 {
1306 timers [((W)w)->active - 1] = timers [timercnt]; 1646 timers [active] = timers [timercnt];
1307 downheap ((WT *)timers, timercnt, ((W)w)->active - 1); 1647 adjustheap ((WT *)timers, timercnt, active);
1308 } 1648 }
1649 }
1309 1650
1310 ((WT)w)->at = w->repeat; 1651 ((WT)w)->at -= mn_now;
1311 1652
1312 ev_stop (EV_A_ (W)w); 1653 ev_stop (EV_A_ (W)w);
1313} 1654}
1314 1655
1315void 1656void noinline
1316ev_timer_again (EV_P_ struct ev_timer *w) 1657ev_timer_again (EV_P_ ev_timer *w)
1317{ 1658{
1318 if (ev_is_active (w)) 1659 if (ev_is_active (w))
1319 { 1660 {
1320 if (w->repeat) 1661 if (w->repeat)
1321 { 1662 {
1322 ((WT)w)->at = mn_now + w->repeat; 1663 ((WT)w)->at = mn_now + w->repeat;
1323 downheap ((WT *)timers, timercnt, ((W)w)->active - 1); 1664 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1324 } 1665 }
1325 else 1666 else
1326 ev_timer_stop (EV_A_ w); 1667 ev_timer_stop (EV_A_ w);
1327 } 1668 }
1328 else if (w->repeat) 1669 else if (w->repeat)
1670 {
1671 w->at = w->repeat;
1329 ev_timer_start (EV_A_ w); 1672 ev_timer_start (EV_A_ w);
1673 }
1330} 1674}
1331 1675
1332void 1676#if EV_PERIODIC_ENABLE
1677void noinline
1333ev_periodic_start (EV_P_ struct ev_periodic *w) 1678ev_periodic_start (EV_P_ ev_periodic *w)
1334{ 1679{
1335 if (ev_is_active (w)) 1680 if (expect_false (ev_is_active (w)))
1336 return; 1681 return;
1337 1682
1338 if (w->reschedule_cb) 1683 if (w->reschedule_cb)
1339 ((WT)w)->at = w->reschedule_cb (w, rt_now); 1684 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1340 else if (w->interval) 1685 else if (w->interval)
1341 { 1686 {
1342 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 1687 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1343 /* this formula differs from the one in periodic_reify because we do not always round up */ 1688 /* this formula differs from the one in periodic_reify because we do not always round up */
1344 ((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval; 1689 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1345 } 1690 }
1691 else
1692 ((WT)w)->at = w->offset;
1346 1693
1347 ev_start (EV_A_ (W)w, ++periodiccnt); 1694 ev_start (EV_A_ (W)w, ++periodiccnt);
1348 array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void)); 1695 array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1349 periodics [periodiccnt - 1] = w; 1696 periodics [periodiccnt - 1] = w;
1350 upheap ((WT *)periodics, periodiccnt - 1); 1697 upheap ((WT *)periodics, periodiccnt - 1);
1351 1698
1699 /*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
1700}
1701
1702void noinline
1703ev_periodic_stop (EV_P_ ev_periodic *w)
1704{
1705 clear_pending (EV_A_ (W)w);
1706 if (expect_false (!ev_is_active (w)))
1707 return;
1708
1352 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1709 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1353}
1354 1710
1355void 1711 {
1356ev_periodic_stop (EV_P_ struct ev_periodic *w) 1712 int active = ((W)w)->active;
1357{
1358 ev_clear_pending (EV_A_ (W)w);
1359 if (!ev_is_active (w))
1360 return;
1361 1713
1362 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1714 if (expect_true (--active < --periodiccnt))
1363
1364 if (((W)w)->active < periodiccnt--)
1365 { 1715 {
1366 periodics [((W)w)->active - 1] = periodics [periodiccnt]; 1716 periodics [active] = periodics [periodiccnt];
1367 downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1); 1717 adjustheap ((WT *)periodics, periodiccnt, active);
1368 } 1718 }
1719 }
1369 1720
1370 ev_stop (EV_A_ (W)w); 1721 ev_stop (EV_A_ (W)w);
1371} 1722}
1372 1723
1373void 1724void noinline
1374ev_periodic_again (EV_P_ struct ev_periodic *w) 1725ev_periodic_again (EV_P_ ev_periodic *w)
1375{ 1726{
1727 /* TODO: use adjustheap and recalculation */
1376 ev_periodic_stop (EV_A_ w); 1728 ev_periodic_stop (EV_A_ w);
1377 ev_periodic_start (EV_A_ w); 1729 ev_periodic_start (EV_A_ w);
1378} 1730}
1379 1731#endif
1380void
1381ev_idle_start (EV_P_ struct ev_idle *w)
1382{
1383 if (ev_is_active (w))
1384 return;
1385
1386 ev_start (EV_A_ (W)w, ++idlecnt);
1387 array_needsize (struct ev_idle *, idles, idlemax, idlecnt, (void));
1388 idles [idlecnt - 1] = w;
1389}
1390
1391void
1392ev_idle_stop (EV_P_ struct ev_idle *w)
1393{
1394 ev_clear_pending (EV_A_ (W)w);
1395 if (ev_is_active (w))
1396 return;
1397
1398 idles [((W)w)->active - 1] = idles [--idlecnt];
1399 ev_stop (EV_A_ (W)w);
1400}
1401
1402void
1403ev_prepare_start (EV_P_ struct ev_prepare *w)
1404{
1405 if (ev_is_active (w))
1406 return;
1407
1408 ev_start (EV_A_ (W)w, ++preparecnt);
1409 array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, (void));
1410 prepares [preparecnt - 1] = w;
1411}
1412
1413void
1414ev_prepare_stop (EV_P_ struct ev_prepare *w)
1415{
1416 ev_clear_pending (EV_A_ (W)w);
1417 if (ev_is_active (w))
1418 return;
1419
1420 prepares [((W)w)->active - 1] = prepares [--preparecnt];
1421 ev_stop (EV_A_ (W)w);
1422}
1423
1424void
1425ev_check_start (EV_P_ struct ev_check *w)
1426{
1427 if (ev_is_active (w))
1428 return;
1429
1430 ev_start (EV_A_ (W)w, ++checkcnt);
1431 array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void));
1432 checks [checkcnt - 1] = w;
1433}
1434
1435void
1436ev_check_stop (EV_P_ struct ev_check *w)
1437{
1438 ev_clear_pending (EV_A_ (W)w);
1439 if (ev_is_active (w))
1440 return;
1441
1442 checks [((W)w)->active - 1] = checks [--checkcnt];
1443 ev_stop (EV_A_ (W)w);
1444}
1445 1732
1446#ifndef SA_RESTART 1733#ifndef SA_RESTART
1447# define SA_RESTART 0 1734# define SA_RESTART 0
1448#endif 1735#endif
1449 1736
1450void 1737void noinline
1451ev_signal_start (EV_P_ struct ev_signal *w) 1738ev_signal_start (EV_P_ ev_signal *w)
1452{ 1739{
1453#if EV_MULTIPLICITY 1740#if EV_MULTIPLICITY
1454 assert (("signal watchers are only supported in the default loop", loop == default_loop)); 1741 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1455#endif 1742#endif
1456 if (ev_is_active (w)) 1743 if (expect_false (ev_is_active (w)))
1457 return; 1744 return;
1458 1745
1459 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 1746 assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1460 1747
1461 ev_start (EV_A_ (W)w, 1); 1748 ev_start (EV_A_ (W)w, 1);
1462 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); 1749 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1463 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); 1750 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1464 1751
1465 if (!((WL)w)->next) 1752 if (!((WL)w)->next)
1466 { 1753 {
1467#if WIN32 1754#if _WIN32
1468 signal (w->signum, sighandler); 1755 signal (w->signum, sighandler);
1469#else 1756#else
1470 struct sigaction sa; 1757 struct sigaction sa;
1471 sa.sa_handler = sighandler; 1758 sa.sa_handler = sighandler;
1472 sigfillset (&sa.sa_mask); 1759 sigfillset (&sa.sa_mask);
… …
1474 sigaction (w->signum, &sa, 0); 1761 sigaction (w->signum, &sa, 0);
1475#endif 1762#endif
1476 } 1763 }
1477} 1764}
1478 1765
1479void 1766void noinline
1480ev_signal_stop (EV_P_ struct ev_signal *w) 1767ev_signal_stop (EV_P_ ev_signal *w)
1481{ 1768{
1482 ev_clear_pending (EV_A_ (W)w); 1769 clear_pending (EV_A_ (W)w);
1483 if (!ev_is_active (w)) 1770 if (expect_false (!ev_is_active (w)))
1484 return; 1771 return;
1485 1772
1486 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); 1773 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1487 ev_stop (EV_A_ (W)w); 1774 ev_stop (EV_A_ (W)w);
1488 1775
1489 if (!signals [w->signum - 1].head) 1776 if (!signals [w->signum - 1].head)
1490 signal (w->signum, SIG_DFL); 1777 signal (w->signum, SIG_DFL);
1491} 1778}
1492 1779
1493void 1780void
1494ev_child_start (EV_P_ struct ev_child *w) 1781ev_child_start (EV_P_ ev_child *w)
1495{ 1782{
1496#if EV_MULTIPLICITY 1783#if EV_MULTIPLICITY
1497 assert (("child watchers are only supported in the default loop", loop == default_loop)); 1784 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1498#endif 1785#endif
1499 if (ev_is_active (w)) 1786 if (expect_false (ev_is_active (w)))
1500 return; 1787 return;
1501 1788
1502 ev_start (EV_A_ (W)w, 1); 1789 ev_start (EV_A_ (W)w, 1);
1503 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1790 wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1504} 1791}
1505 1792
1506void 1793void
1507ev_child_stop (EV_P_ struct ev_child *w) 1794ev_child_stop (EV_P_ ev_child *w)
1508{ 1795{
1509 ev_clear_pending (EV_A_ (W)w); 1796 clear_pending (EV_A_ (W)w);
1510 if (ev_is_active (w)) 1797 if (expect_false (!ev_is_active (w)))
1511 return; 1798 return;
1512 1799
1513 wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1800 wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1514 ev_stop (EV_A_ (W)w); 1801 ev_stop (EV_A_ (W)w);
1515} 1802}
1516 1803
1804#if EV_STAT_ENABLE
1805
1806# ifdef _WIN32
1807# undef lstat
1808# define lstat(a,b) _stati64 (a,b)
1809# endif
1810
1811#define DEF_STAT_INTERVAL 5.0074891
1812#define MIN_STAT_INTERVAL 0.1074891
1813
1814static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
1815
1816#if EV_USE_INOTIFY
1817# define EV_INOTIFY_BUFSIZE 8192
1818
1819static void noinline
1820infy_add (EV_P_ ev_stat *w)
1821{
1822 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD);
1823
1824 if (w->wd < 0)
1825 {
1826 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
1827
1828 /* monitor some parent directory for speedup hints */
1829 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
1830 {
1831 char path [4096];
1832 strcpy (path, w->path);
1833
1834 do
1835 {
1836 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
1837 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
1838
1839 char *pend = strrchr (path, '/');
1840
1841 if (!pend)
1842 break; /* whoops, no '/', complain to your admin */
1843
1844 *pend = 0;
1845 w->wd = inotify_add_watch (fs_fd, path, mask);
1846 }
1847 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
1848 }
1849 }
1850 else
1851 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
1852
1853 if (w->wd >= 0)
1854 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
1855}
1856
1857static void noinline
1858infy_del (EV_P_ ev_stat *w)
1859{
1860 int slot;
1861 int wd = w->wd;
1862
1863 if (wd < 0)
1864 return;
1865
1866 w->wd = -2;
1867 slot = wd & (EV_INOTIFY_HASHSIZE - 1);
1868 wlist_del (&fs_hash [slot].head, (WL)w);
1869
1870 /* remove this watcher, if others are watching it, they will rearm */
1871 inotify_rm_watch (fs_fd, wd);
1872}
1873
1874static void noinline
1875infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
1876{
1877 if (slot < 0)
1878 /* overflow, need to check for all hahs slots */
1879 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
1880 infy_wd (EV_A_ slot, wd, ev);
1881 else
1882 {
1883 WL w_;
1884
1885 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
1886 {
1887 ev_stat *w = (ev_stat *)w_;
1888 w_ = w_->next; /* lets us remove this watcher and all before it */
1889
1890 if (w->wd == wd || wd == -1)
1891 {
1892 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
1893 {
1894 w->wd = -1;
1895 infy_add (EV_A_ w); /* re-add, no matter what */
1896 }
1897
1898 stat_timer_cb (EV_A_ &w->timer, 0);
1899 }
1900 }
1901 }
1902}
1903
1904static void
1905infy_cb (EV_P_ ev_io *w, int revents)
1906{
1907 char buf [EV_INOTIFY_BUFSIZE];
1908 struct inotify_event *ev = (struct inotify_event *)buf;
1909 int ofs;
1910 int len = read (fs_fd, buf, sizeof (buf));
1911
1912 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
1913 infy_wd (EV_A_ ev->wd, ev->wd, ev);
1914}
1915
1916void inline_size
1917infy_init (EV_P)
1918{
1919 if (fs_fd != -2)
1920 return;
1921
1922 fs_fd = inotify_init ();
1923
1924 if (fs_fd >= 0)
1925 {
1926 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
1927 ev_set_priority (&fs_w, EV_MAXPRI);
1928 ev_io_start (EV_A_ &fs_w);
1929 }
1930}
1931
1932void inline_size
1933infy_fork (EV_P)
1934{
1935 int slot;
1936
1937 if (fs_fd < 0)
1938 return;
1939
1940 close (fs_fd);
1941 fs_fd = inotify_init ();
1942
1943 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
1944 {
1945 WL w_ = fs_hash [slot].head;
1946 fs_hash [slot].head = 0;
1947
1948 while (w_)
1949 {
1950 ev_stat *w = (ev_stat *)w_;
1951 w_ = w_->next; /* lets us add this watcher */
1952
1953 w->wd = -1;
1954
1955 if (fs_fd >= 0)
1956 infy_add (EV_A_ w); /* re-add, no matter what */
1957 else
1958 ev_timer_start (EV_A_ &w->timer);
1959 }
1960
1961 }
1962}
1963
1964#endif
1965
1966void
1967ev_stat_stat (EV_P_ ev_stat *w)
1968{
1969 if (lstat (w->path, &w->attr) < 0)
1970 w->attr.st_nlink = 0;
1971 else if (!w->attr.st_nlink)
1972 w->attr.st_nlink = 1;
1973}
1974
1975static void noinline
1976stat_timer_cb (EV_P_ ev_timer *w_, int revents)
1977{
1978 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
1979
1980 /* we copy this here each the time so that */
1981 /* prev has the old value when the callback gets invoked */
1982 w->prev = w->attr;
1983 ev_stat_stat (EV_A_ w);
1984
1985 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
1986 if (
1987 w->prev.st_dev != w->attr.st_dev
1988 || w->prev.st_ino != w->attr.st_ino
1989 || w->prev.st_mode != w->attr.st_mode
1990 || w->prev.st_nlink != w->attr.st_nlink
1991 || w->prev.st_uid != w->attr.st_uid
1992 || w->prev.st_gid != w->attr.st_gid
1993 || w->prev.st_rdev != w->attr.st_rdev
1994 || w->prev.st_size != w->attr.st_size
1995 || w->prev.st_atime != w->attr.st_atime
1996 || w->prev.st_mtime != w->attr.st_mtime
1997 || w->prev.st_ctime != w->attr.st_ctime
1998 ) {
1999 #if EV_USE_INOTIFY
2000 infy_del (EV_A_ w);
2001 infy_add (EV_A_ w);
2002 ev_stat_stat (EV_A_ w); /* avoid race... */
2003 #endif
2004
2005 ev_feed_event (EV_A_ w, EV_STAT);
2006 }
2007}
2008
2009void
2010ev_stat_start (EV_P_ ev_stat *w)
2011{
2012 if (expect_false (ev_is_active (w)))
2013 return;
2014
2015 /* since we use memcmp, we need to clear any padding data etc. */
2016 memset (&w->prev, 0, sizeof (ev_statdata));
2017 memset (&w->attr, 0, sizeof (ev_statdata));
2018
2019 ev_stat_stat (EV_A_ w);
2020
2021 if (w->interval < MIN_STAT_INTERVAL)
2022 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2023
2024 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
2025 ev_set_priority (&w->timer, ev_priority (w));
2026
2027#if EV_USE_INOTIFY
2028 infy_init (EV_A);
2029
2030 if (fs_fd >= 0)
2031 infy_add (EV_A_ w);
2032 else
2033#endif
2034 ev_timer_start (EV_A_ &w->timer);
2035
2036 ev_start (EV_A_ (W)w, 1);
2037}
2038
2039void
2040ev_stat_stop (EV_P_ ev_stat *w)
2041{
2042 clear_pending (EV_A_ (W)w);
2043 if (expect_false (!ev_is_active (w)))
2044 return;
2045
2046#if EV_USE_INOTIFY
2047 infy_del (EV_A_ w);
2048#endif
2049 ev_timer_stop (EV_A_ &w->timer);
2050
2051 ev_stop (EV_A_ (W)w);
2052}
2053#endif
2054
2055#if EV_IDLE_ENABLE
2056void
2057ev_idle_start (EV_P_ ev_idle *w)
2058{
2059 if (expect_false (ev_is_active (w)))
2060 return;
2061
2062 pri_adjust (EV_A_ (W)w);
2063
2064 {
2065 int active = ++idlecnt [ABSPRI (w)];
2066
2067 ++idleall;
2068 ev_start (EV_A_ (W)w, active);
2069
2070 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2071 idles [ABSPRI (w)][active - 1] = w;
2072 }
2073}
2074
2075void
2076ev_idle_stop (EV_P_ ev_idle *w)
2077{
2078 clear_pending (EV_A_ (W)w);
2079 if (expect_false (!ev_is_active (w)))
2080 return;
2081
2082 {
2083 int active = ((W)w)->active;
2084
2085 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2086 ((W)idles [ABSPRI (w)][active - 1])->active = active;
2087
2088 ev_stop (EV_A_ (W)w);
2089 --idleall;
2090 }
2091}
2092#endif
2093
2094void
2095ev_prepare_start (EV_P_ ev_prepare *w)
2096{
2097 if (expect_false (ev_is_active (w)))
2098 return;
2099
2100 ev_start (EV_A_ (W)w, ++preparecnt);
2101 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2102 prepares [preparecnt - 1] = w;
2103}
2104
2105void
2106ev_prepare_stop (EV_P_ ev_prepare *w)
2107{
2108 clear_pending (EV_A_ (W)w);
2109 if (expect_false (!ev_is_active (w)))
2110 return;
2111
2112 {
2113 int active = ((W)w)->active;
2114 prepares [active - 1] = prepares [--preparecnt];
2115 ((W)prepares [active - 1])->active = active;
2116 }
2117
2118 ev_stop (EV_A_ (W)w);
2119}
2120
2121void
2122ev_check_start (EV_P_ ev_check *w)
2123{
2124 if (expect_false (ev_is_active (w)))
2125 return;
2126
2127 ev_start (EV_A_ (W)w, ++checkcnt);
2128 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2129 checks [checkcnt - 1] = w;
2130}
2131
2132void
2133ev_check_stop (EV_P_ ev_check *w)
2134{
2135 clear_pending (EV_A_ (W)w);
2136 if (expect_false (!ev_is_active (w)))
2137 return;
2138
2139 {
2140 int active = ((W)w)->active;
2141 checks [active - 1] = checks [--checkcnt];
2142 ((W)checks [active - 1])->active = active;
2143 }
2144
2145 ev_stop (EV_A_ (W)w);
2146}
2147
2148#if EV_EMBED_ENABLE
2149void noinline
2150ev_embed_sweep (EV_P_ ev_embed *w)
2151{
2152 ev_loop (w->loop, EVLOOP_NONBLOCK);
2153}
2154
2155static void
2156embed_cb (EV_P_ ev_io *io, int revents)
2157{
2158 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2159
2160 if (ev_cb (w))
2161 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2162 else
2163 ev_embed_sweep (loop, w);
2164}
2165
2166void
2167ev_embed_start (EV_P_ ev_embed *w)
2168{
2169 if (expect_false (ev_is_active (w)))
2170 return;
2171
2172 {
2173 struct ev_loop *loop = w->loop;
2174 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2175 ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
2176 }
2177
2178 ev_set_priority (&w->io, ev_priority (w));
2179 ev_io_start (EV_A_ &w->io);
2180
2181 ev_start (EV_A_ (W)w, 1);
2182}
2183
2184void
2185ev_embed_stop (EV_P_ ev_embed *w)
2186{
2187 clear_pending (EV_A_ (W)w);
2188 if (expect_false (!ev_is_active (w)))
2189 return;
2190
2191 ev_io_stop (EV_A_ &w->io);
2192
2193 ev_stop (EV_A_ (W)w);
2194}
2195#endif
2196
2197#if EV_FORK_ENABLE
2198void
2199ev_fork_start (EV_P_ ev_fork *w)
2200{
2201 if (expect_false (ev_is_active (w)))
2202 return;
2203
2204 ev_start (EV_A_ (W)w, ++forkcnt);
2205 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2206 forks [forkcnt - 1] = w;
2207}
2208
2209void
2210ev_fork_stop (EV_P_ ev_fork *w)
2211{
2212 clear_pending (EV_A_ (W)w);
2213 if (expect_false (!ev_is_active (w)))
2214 return;
2215
2216 {
2217 int active = ((W)w)->active;
2218 forks [active - 1] = forks [--forkcnt];
2219 ((W)forks [active - 1])->active = active;
2220 }
2221
2222 ev_stop (EV_A_ (W)w);
2223}
2224#endif
2225
1517/*****************************************************************************/ 2226/*****************************************************************************/
1518 2227
1519struct ev_once 2228struct ev_once
1520{ 2229{
1521 struct ev_io io; 2230 ev_io io;
1522 struct ev_timer to; 2231 ev_timer to;
1523 void (*cb)(int revents, void *arg); 2232 void (*cb)(int revents, void *arg);
1524 void *arg; 2233 void *arg;
1525}; 2234};
1526 2235
1527static void 2236static void
… …
1536 2245
1537 cb (revents, arg); 2246 cb (revents, arg);
1538} 2247}
1539 2248
1540static void 2249static void
1541once_cb_io (EV_P_ struct ev_io *w, int revents) 2250once_cb_io (EV_P_ ev_io *w, int revents)
1542{ 2251{
1543 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 2252 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1544} 2253}
1545 2254
1546static void 2255static void
1547once_cb_to (EV_P_ struct ev_timer *w, int revents) 2256once_cb_to (EV_P_ ev_timer *w, int revents)
1548{ 2257{
1549 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 2258 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1550} 2259}
1551 2260
1552void 2261void
1553ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 2262ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1554{ 2263{
1555 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 2264 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1556 2265
1557 if (!once) 2266 if (expect_false (!once))
2267 {
1558 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 2268 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1559 else 2269 return;
1560 { 2270 }
2271
1561 once->cb = cb; 2272 once->cb = cb;
1562 once->arg = arg; 2273 once->arg = arg;
1563 2274
1564 ev_watcher_init (&once->io, once_cb_io); 2275 ev_init (&once->io, once_cb_io);
1565 if (fd >= 0) 2276 if (fd >= 0)
1566 { 2277 {
1567 ev_io_set (&once->io, fd, events); 2278 ev_io_set (&once->io, fd, events);
1568 ev_io_start (EV_A_ &once->io); 2279 ev_io_start (EV_A_ &once->io);
1569 } 2280 }
1570 2281
1571 ev_watcher_init (&once->to, once_cb_to); 2282 ev_init (&once->to, once_cb_to);
1572 if (timeout >= 0.) 2283 if (timeout >= 0.)
1573 { 2284 {
1574 ev_timer_set (&once->to, timeout, 0.); 2285 ev_timer_set (&once->to, timeout, 0.);
1575 ev_timer_start (EV_A_ &once->to); 2286 ev_timer_start (EV_A_ &once->to);
1576 }
1577 } 2287 }
1578} 2288}
1579 2289
2290#ifdef __cplusplus
2291}
2292#endif
2293

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