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Comparing libev/ev.c (file contents):
Revision 1.98 by root, Sun Nov 11 02:05:20 2007 UTC vs.
Revision 1.177 by root, Tue Dec 11 15:06:50 2007 UTC

… …
32#ifdef __cplusplus 32#ifdef __cplusplus
33extern "C" { 33extern "C" {
34#endif 34#endif
35 35
36#ifndef EV_STANDALONE 36#ifndef EV_STANDALONE
37# ifdef EV_CONFIG_H
38# include EV_CONFIG_H
39# else
37# include "config.h" 40# include "config.h"
41# endif
38 42
39# if HAVE_CLOCK_GETTIME 43# if HAVE_CLOCK_GETTIME
40# ifndef EV_USE_MONOTONIC 44# ifndef EV_USE_MONOTONIC
41# define EV_USE_MONOTONIC 1 45# define EV_USE_MONOTONIC 1
42# endif 46# endif
43# ifndef EV_USE_REALTIME 47# ifndef EV_USE_REALTIME
44# define EV_USE_REALTIME 1 48# define EV_USE_REALTIME 1
45# endif 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
46# endif 57# endif
47 58
48# if HAVE_SELECT && HAVE_SYS_SELECT_H && !defined (EV_USE_SELECT) 59# ifndef EV_USE_SELECT
60# if HAVE_SELECT && HAVE_SYS_SELECT_H
49# define EV_USE_SELECT 1 61# define EV_USE_SELECT 1
62# else
63# define EV_USE_SELECT 0
64# endif
50# endif 65# endif
51 66
52# if HAVE_POLL && HAVE_POLL_H && !defined (EV_USE_POLL) 67# ifndef EV_USE_POLL
68# if HAVE_POLL && HAVE_POLL_H
53# define EV_USE_POLL 1 69# define EV_USE_POLL 1
70# else
71# define EV_USE_POLL 0
72# endif
54# endif 73# endif
55 74
56# if HAVE_EPOLL && HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H && !defined (EV_USE_EPOLL) 75# ifndef EV_USE_EPOLL
76# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
57# define EV_USE_EPOLL 1 77# define EV_USE_EPOLL 1
78# else
79# define EV_USE_EPOLL 0
80# endif
58# endif 81# endif
59 82
83# ifndef EV_USE_KQUEUE
60# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H && !defined (EV_USE_KQUEUE) 84# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H
61# 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
62# endif 105# endif
63 106
64#endif 107#endif
65 108
66#include <math.h> 109#include <math.h>
… …
75#include <sys/types.h> 118#include <sys/types.h>
76#include <time.h> 119#include <time.h>
77 120
78#include <signal.h> 121#include <signal.h>
79 122
80#ifndef WIN32
81# include <unistd.h>
82# include <sys/time.h>
83# include <sys/wait.h>
84#endif
85/**/
86
87#ifndef EV_USE_MONOTONIC
88# define EV_USE_MONOTONIC 1
89#endif
90
91#ifndef EV_USE_SELECT
92# define EV_USE_SELECT 1
93#endif
94
95#ifndef EV_USE_POLL
96# define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */
97#endif
98
99#ifndef EV_USE_EPOLL
100# define EV_USE_EPOLL 0
101#endif
102
103#ifndef EV_USE_KQUEUE
104# define EV_USE_KQUEUE 0
105#endif
106
107#ifndef EV_USE_WIN32
108# ifdef WIN32
109# define EV_USE_WIN32 0 /* it does not exist, use select */
110# undef EV_USE_SELECT
111# define EV_USE_SELECT 1
112# else
113# define EV_USE_WIN32 0
114# endif
115#endif
116
117#ifndef EV_USE_REALTIME
118# define EV_USE_REALTIME 1
119#endif
120
121/**/
122
123#ifndef CLOCK_MONOTONIC
124# undef EV_USE_MONOTONIC
125# define EV_USE_MONOTONIC 0
126#endif
127
128#ifndef CLOCK_REALTIME
129# undef EV_USE_REALTIME
130# define EV_USE_REALTIME 0
131#endif
132
133/**/
134
135#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
136#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */
137#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
138/*#define CLEANUP_INTERVAL 300. /* how often to try to free memory and re-check fds */
139
140#ifdef EV_H 123#ifdef EV_H
141# include EV_H 124# include EV_H
142#else 125#else
143# include "ev.h" 126# include "ev.h"
144#endif 127#endif
145 128
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
146#if __GNUC__ >= 3 235#if __GNUC__ >= 3
147# define expect(expr,value) __builtin_expect ((expr),(value)) 236# define expect(expr,value) __builtin_expect ((expr),(value))
148# define inline inline 237# define noinline __attribute__ ((noinline))
149#else 238#else
150# define expect(expr,value) (expr) 239# define expect(expr,value) (expr)
151# define inline static 240# define noinline
241# if __STDC_VERSION__ < 199901L
242# define inline
243# endif
152#endif 244#endif
153 245
154#define expect_false(expr) expect ((expr) != 0, 0) 246#define expect_false(expr) expect ((expr) != 0, 0)
155#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
156 255
157#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 256#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
158#define ABSPRI(w) ((w)->priority - EV_MINPRI) 257#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
159 258
259#define EMPTY /* required for microsofts broken pseudo-c compiler */
260#define EMPTY2(a,b) /* used to suppress some warnings */
261
160typedef struct ev_watcher *W; 262typedef ev_watcher *W;
161typedef struct ev_watcher_list *WL; 263typedef ev_watcher_list *WL;
162typedef struct ev_watcher_time *WT; 264typedef ev_watcher_time *WT;
163 265
164static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 266static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
165 267
166#ifdef WIN32 268#ifdef _WIN32
167# include "ev_win32.c" 269# include "ev_win32.c"
168#endif 270#endif
169 271
170/*****************************************************************************/ 272/*****************************************************************************/
171 273
172static void (*syserr_cb)(const char *msg); 274static void (*syserr_cb)(const char *msg);
173 275
276void
174void ev_set_syserr_cb (void (*cb)(const char *msg)) 277ev_set_syserr_cb (void (*cb)(const char *msg))
175{ 278{
176 syserr_cb = cb; 279 syserr_cb = cb;
177} 280}
178 281
179static void 282static void noinline
180syserr (const char *msg) 283syserr (const char *msg)
181{ 284{
182 if (!msg) 285 if (!msg)
183 msg = "(libev) system error"; 286 msg = "(libev) system error";
184 287
… …
191 } 294 }
192} 295}
193 296
194static void *(*alloc)(void *ptr, long size); 297static void *(*alloc)(void *ptr, long size);
195 298
299void
196void ev_set_allocator (void *(*cb)(void *ptr, long size)) 300ev_set_allocator (void *(*cb)(void *ptr, long size))
197{ 301{
198 alloc = cb; 302 alloc = cb;
199} 303}
200 304
201static void * 305inline_speed void *
202ev_realloc (void *ptr, long size) 306ev_realloc (void *ptr, long size)
203{ 307{
204 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size); 308 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
205 309
206 if (!ptr && size) 310 if (!ptr && size)
… …
220typedef struct 324typedef struct
221{ 325{
222 WL head; 326 WL head;
223 unsigned char events; 327 unsigned char events;
224 unsigned char reify; 328 unsigned char reify;
329#if EV_SELECT_IS_WINSOCKET
330 SOCKET handle;
331#endif
225} ANFD; 332} ANFD;
226 333
227typedef struct 334typedef struct
228{ 335{
229 W w; 336 W w;
230 int events; 337 int events;
231} ANPENDING; 338} ANPENDING;
232 339
340#if EV_USE_INOTIFY
341typedef struct
342{
343 WL head;
344} ANFS;
345#endif
346
233#if EV_MULTIPLICITY 347#if EV_MULTIPLICITY
234 348
235 struct ev_loop 349 struct ev_loop
236 { 350 {
237 ev_tstamp ev_rt_now; 351 ev_tstamp ev_rt_now;
352 #define ev_rt_now ((loop)->ev_rt_now)
238 #define VAR(name,decl) decl; 353 #define VAR(name,decl) decl;
239 #include "ev_vars.h" 354 #include "ev_vars.h"
240 #undef VAR 355 #undef VAR
241 }; 356 };
242 #include "ev_wrap.h" 357 #include "ev_wrap.h"
243 358
244 struct ev_loop default_loop_struct; 359 static struct ev_loop default_loop_struct;
245 static struct ev_loop *default_loop; 360 struct ev_loop *ev_default_loop_ptr;
246 361
247#else 362#else
248 363
249 ev_tstamp ev_rt_now; 364 ev_tstamp ev_rt_now;
250 #define VAR(name,decl) static decl; 365 #define VAR(name,decl) static decl;
251 #include "ev_vars.h" 366 #include "ev_vars.h"
252 #undef VAR 367 #undef VAR
253 368
254 static int default_loop; 369 static int ev_default_loop_ptr;
255 370
256#endif 371#endif
257 372
258/*****************************************************************************/ 373/*****************************************************************************/
259 374
… …
269 gettimeofday (&tv, 0); 384 gettimeofday (&tv, 0);
270 return tv.tv_sec + tv.tv_usec * 1e-6; 385 return tv.tv_sec + tv.tv_usec * 1e-6;
271#endif 386#endif
272} 387}
273 388
274inline ev_tstamp 389ev_tstamp inline_size
275get_clock (void) 390get_clock (void)
276{ 391{
277#if EV_USE_MONOTONIC 392#if EV_USE_MONOTONIC
278 if (expect_true (have_monotonic)) 393 if (expect_true (have_monotonic))
279 { 394 {
… …
292{ 407{
293 return ev_rt_now; 408 return ev_rt_now;
294} 409}
295#endif 410#endif
296 411
297#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}
298 439
299#define array_needsize(type,base,cur,cnt,init) \ 440#define array_needsize(type,base,cur,cnt,init) \
300 if (expect_false ((cnt) > cur)) \ 441 if (expect_false ((cnt) > (cur))) \
301 { \ 442 { \
302 int newcnt = cur; \ 443 int ocur_ = (cur); \
303 do \ 444 (base) = (type *)array_realloc \
304 { \ 445 (sizeof (type), (base), &(cur), (cnt)); \
305 newcnt = array_roundsize (type, newcnt << 1); \ 446 init ((base) + (ocur_), (cur) - ocur_); \
306 } \
307 while ((cnt) > newcnt); \
308 \
309 base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\
310 init (base + cur, newcnt - cur); \
311 cur = newcnt; \
312 } 447 }
313 448
449#if 0
314#define array_slim(type,stem) \ 450#define array_slim(type,stem) \
315 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 451 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
316 { \ 452 { \
317 stem ## max = array_roundsize (stem ## cnt >> 1); \ 453 stem ## max = array_roundsize (stem ## cnt >> 1); \
318 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\ 454 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
319 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 455 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
320 } 456 }
321 457#endif
322/* microsoft's pseudo-c is quite far from C as the rest of the world and the standard knows it */
323/* bringing us everlasting joy in form of stupid extra macros that are not required in C */
324#define array_free_microshit(stem) \
325 ev_free (stem ## s); stem ## cnt = stem ## max = 0;
326 458
327#define array_free(stem, idx) \ 459#define array_free(stem, idx) \
328 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;
329 461
330/*****************************************************************************/ 462/*****************************************************************************/
331 463
332static 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
333anfds_init (ANFD *base, int count) 493anfds_init (ANFD *base, int count)
334{ 494{
335 while (count--) 495 while (count--)
336 { 496 {
337 base->head = 0; 497 base->head = 0;
… …
340 500
341 ++base; 501 ++base;
342 } 502 }
343} 503}
344 504
345void 505void inline_speed
346ev_feed_event (EV_P_ void *w, int revents)
347{
348 W w_ = (W)w;
349
350 if (w_->pending)
351 {
352 pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
353 return;
354 }
355
356 w_->pending = ++pendingcnt [ABSPRI (w_)];
357 array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], (void));
358 pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
359 pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
360}
361
362static void
363queue_events (EV_P_ W *events, int eventcnt, int type)
364{
365 int i;
366
367 for (i = 0; i < eventcnt; ++i)
368 ev_feed_event (EV_A_ events [i], type);
369}
370
371inline void
372fd_event (EV_P_ int fd, int revents) 506fd_event (EV_P_ int fd, int revents)
373{ 507{
374 ANFD *anfd = anfds + fd; 508 ANFD *anfd = anfds + fd;
375 struct ev_io *w; 509 ev_io *w;
376 510
377 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)
378 { 512 {
379 int ev = w->events & revents; 513 int ev = w->events & revents;
380 514
381 if (ev) 515 if (ev)
382 ev_feed_event (EV_A_ (W)w, ev); 516 ev_feed_event (EV_A_ (W)w, ev);
… …
384} 518}
385 519
386void 520void
387ev_feed_fd_event (EV_P_ int fd, int revents) 521ev_feed_fd_event (EV_P_ int fd, int revents)
388{ 522{
523 if (fd >= 0 && fd < anfdmax)
389 fd_event (EV_A_ fd, revents); 524 fd_event (EV_A_ fd, revents);
390} 525}
391 526
392/*****************************************************************************/ 527void inline_size
393
394static void
395fd_reify (EV_P) 528fd_reify (EV_P)
396{ 529{
397 int i; 530 int i;
398 531
399 for (i = 0; i < fdchangecnt; ++i) 532 for (i = 0; i < fdchangecnt; ++i)
400 { 533 {
401 int fd = fdchanges [i]; 534 int fd = fdchanges [i];
402 ANFD *anfd = anfds + fd; 535 ANFD *anfd = anfds + fd;
403 struct ev_io *w; 536 ev_io *w;
404 537
405 int events = 0; 538 int events = 0;
406 539
407 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)
408 events |= w->events; 541 events |= w->events;
409 542
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
410 anfd->reify = 0; 552 anfd->reify = 0;
411 553
412 method_modify (EV_A_ fd, anfd->events, events); 554 backend_modify (EV_A_ fd, anfd->events, events);
413 anfd->events = events; 555 anfd->events = events;
414 } 556 }
415 557
416 fdchangecnt = 0; 558 fdchangecnt = 0;
417} 559}
418 560
419static void 561void inline_size
420fd_change (EV_P_ int fd) 562fd_change (EV_P_ int fd)
421{ 563{
422 if (anfds [fd].reify) 564 if (expect_false (anfds [fd].reify))
423 return; 565 return;
424 566
425 anfds [fd].reify = 1; 567 anfds [fd].reify = 1;
426 568
427 ++fdchangecnt; 569 ++fdchangecnt;
428 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void)); 570 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
429 fdchanges [fdchangecnt - 1] = fd; 571 fdchanges [fdchangecnt - 1] = fd;
430} 572}
431 573
432static void 574void inline_speed
433fd_kill (EV_P_ int fd) 575fd_kill (EV_P_ int fd)
434{ 576{
435 struct ev_io *w; 577 ev_io *w;
436 578
437 while ((w = (struct ev_io *)anfds [fd].head)) 579 while ((w = (ev_io *)anfds [fd].head))
438 { 580 {
439 ev_io_stop (EV_A_ w); 581 ev_io_stop (EV_A_ w);
440 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);
441 } 583 }
442} 584}
443 585
444static int 586int inline_size
445fd_valid (int fd) 587fd_valid (int fd)
446{ 588{
447#ifdef WIN32 589#ifdef _WIN32
448 return !!win32_get_osfhandle (fd); 590 return _get_osfhandle (fd) != -1;
449#else 591#else
450 return fcntl (fd, F_GETFD) != -1; 592 return fcntl (fd, F_GETFD) != -1;
451#endif 593#endif
452} 594}
453 595
454/* called on EBADF to verify fds */ 596/* called on EBADF to verify fds */
455static void 597static void noinline
456fd_ebadf (EV_P) 598fd_ebadf (EV_P)
457{ 599{
458 int fd; 600 int fd;
459 601
460 for (fd = 0; fd < anfdmax; ++fd) 602 for (fd = 0; fd < anfdmax; ++fd)
… …
462 if (!fd_valid (fd) == -1 && errno == EBADF) 604 if (!fd_valid (fd) == -1 && errno == EBADF)
463 fd_kill (EV_A_ fd); 605 fd_kill (EV_A_ fd);
464} 606}
465 607
466/* 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 */
467static void 609static void noinline
468fd_enomem (EV_P) 610fd_enomem (EV_P)
469{ 611{
470 int fd; 612 int fd;
471 613
472 for (fd = anfdmax; fd--; ) 614 for (fd = anfdmax; fd--; )
… …
475 fd_kill (EV_A_ fd); 617 fd_kill (EV_A_ fd);
476 return; 618 return;
477 } 619 }
478} 620}
479 621
480/* 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 */
481static void 623static void noinline
482fd_rearm_all (EV_P) 624fd_rearm_all (EV_P)
483{ 625{
484 int fd; 626 int fd;
485 627
486 /* this should be highly optimised to not do anything but set a flag */
487 for (fd = 0; fd < anfdmax; ++fd) 628 for (fd = 0; fd < anfdmax; ++fd)
488 if (anfds [fd].events) 629 if (anfds [fd].events)
489 { 630 {
490 anfds [fd].events = 0; 631 anfds [fd].events = 0;
491 fd_change (EV_A_ fd); 632 fd_change (EV_A_ fd);
492 } 633 }
493} 634}
494 635
495/*****************************************************************************/ 636/*****************************************************************************/
496 637
497static void 638void inline_speed
498upheap (WT *heap, int k) 639upheap (WT *heap, int k)
499{ 640{
500 WT w = heap [k]; 641 WT w = heap [k];
501 642
502 while (k && heap [k >> 1]->at > w->at) 643 while (k && heap [k >> 1]->at > w->at)
… …
509 heap [k] = w; 650 heap [k] = w;
510 ((W)heap [k])->active = k + 1; 651 ((W)heap [k])->active = k + 1;
511 652
512} 653}
513 654
514static void 655void inline_speed
515downheap (WT *heap, int N, int k) 656downheap (WT *heap, int N, int k)
516{ 657{
517 WT w = heap [k]; 658 WT w = heap [k];
518 659
519 while (k < (N >> 1)) 660 while (k < (N >> 1))
… …
533 674
534 heap [k] = w; 675 heap [k] = w;
535 ((W)heap [k])->active = k + 1; 676 ((W)heap [k])->active = k + 1;
536} 677}
537 678
538inline void 679void inline_size
539adjustheap (WT *heap, int N, int k, ev_tstamp at) 680adjustheap (WT *heap, int N, int k)
540{ 681{
541 ev_tstamp old_at = heap [k]->at; 682 upheap (heap, k);
542 heap [k]->at = at;
543
544 if (old_at < at)
545 downheap (heap, N, k); 683 downheap (heap, N, k);
546 else
547 upheap (heap, k);
548} 684}
549 685
550/*****************************************************************************/ 686/*****************************************************************************/
551 687
552typedef struct 688typedef struct
… …
558static ANSIG *signals; 694static ANSIG *signals;
559static int signalmax; 695static int signalmax;
560 696
561static int sigpipe [2]; 697static int sigpipe [2];
562static sig_atomic_t volatile gotsig; 698static sig_atomic_t volatile gotsig;
563static struct ev_io sigev; 699static ev_io sigev;
564 700
565static void 701void inline_size
566signals_init (ANSIG *base, int count) 702signals_init (ANSIG *base, int count)
567{ 703{
568 while (count--) 704 while (count--)
569 { 705 {
570 base->head = 0; 706 base->head = 0;
… …
575} 711}
576 712
577static void 713static void
578sighandler (int signum) 714sighandler (int signum)
579{ 715{
580#if WIN32 716#if _WIN32
581 signal (signum, sighandler); 717 signal (signum, sighandler);
582#endif 718#endif
583 719
584 signals [signum - 1].gotsig = 1; 720 signals [signum - 1].gotsig = 1;
585 721
586 if (!gotsig) 722 if (!gotsig)
587 { 723 {
588 int old_errno = errno; 724 int old_errno = errno;
589 gotsig = 1; 725 gotsig = 1;
590#ifdef WIN32
591 send (sigpipe [1], &signum, 1, MSG_DONTWAIT);
592#else
593 write (sigpipe [1], &signum, 1); 726 write (sigpipe [1], &signum, 1);
594#endif
595 errno = old_errno; 727 errno = old_errno;
596 } 728 }
597} 729}
598 730
599void 731void noinline
600ev_feed_signal_event (EV_P_ int signum) 732ev_feed_signal_event (EV_P_ int signum)
601{ 733{
602 WL w; 734 WL w;
603 735
604#if EV_MULTIPLICITY 736#if EV_MULTIPLICITY
605 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));
606#endif 738#endif
607 739
608 --signum; 740 --signum;
609 741
610 if (signum < 0 || signum >= signalmax) 742 if (signum < 0 || signum >= signalmax)
… …
615 for (w = signals [signum].head; w; w = w->next) 747 for (w = signals [signum].head; w; w = w->next)
616 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 748 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
617} 749}
618 750
619static void 751static void
620sigcb (EV_P_ struct ev_io *iow, int revents) 752sigcb (EV_P_ ev_io *iow, int revents)
621{ 753{
622 int signum; 754 int signum;
623 755
624#ifdef WIN32
625 recv (sigpipe [0], &revents, 1, MSG_DONTWAIT);
626#else
627 read (sigpipe [0], &revents, 1); 756 read (sigpipe [0], &revents, 1);
628#endif
629 gotsig = 0; 757 gotsig = 0;
630 758
631 for (signum = signalmax; signum--; ) 759 for (signum = signalmax; signum--; )
632 if (signals [signum].gotsig) 760 if (signals [signum].gotsig)
633 ev_feed_signal_event (EV_A_ signum + 1); 761 ev_feed_signal_event (EV_A_ signum + 1);
634} 762}
635 763
636static 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
637siginit (EV_P) 777siginit (EV_P)
638{ 778{
639#ifndef WIN32 779 fd_intern (sigpipe [0]);
640 fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC); 780 fd_intern (sigpipe [1]);
641 fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
642
643 /* rather than sort out wether we really need nb, set it */
644 fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
645 fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
646#endif
647 781
648 ev_io_set (&sigev, sigpipe [0], EV_READ); 782 ev_io_set (&sigev, sigpipe [0], EV_READ);
649 ev_io_start (EV_A_ &sigev); 783 ev_io_start (EV_A_ &sigev);
650 ev_unref (EV_A); /* child watcher should not keep loop alive */ 784 ev_unref (EV_A); /* child watcher should not keep loop alive */
651} 785}
652 786
653/*****************************************************************************/ 787/*****************************************************************************/
654 788
655static struct ev_child *childs [PID_HASHSIZE]; 789static ev_child *childs [EV_PID_HASHSIZE];
656 790
657#ifndef WIN32 791#ifndef _WIN32
658 792
659static 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}
660 809
661#ifndef WCONTINUED 810#ifndef WCONTINUED
662# define WCONTINUED 0 811# define WCONTINUED 0
663#endif 812#endif
664 813
665static void 814static void
666child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
667{
668 struct ev_child *w;
669
670 for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
671 if (w->pid == pid || !w->pid)
672 {
673 ev_priority (w) = ev_priority (sw); /* need to do it *now* */
674 w->rpid = pid;
675 w->rstatus = status;
676 ev_feed_event (EV_A_ (W)w, EV_CHILD);
677 }
678}
679
680static void
681childcb (EV_P_ struct ev_signal *sw, int revents) 815childcb (EV_P_ ev_signal *sw, int revents)
682{ 816{
683 int pid, status; 817 int pid, status;
684 818
819 /* some systems define WCONTINUED but then fail to support it (linux 2.4) */
685 if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) 820 if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
686 { 821 if (!WCONTINUED
822 || errno != EINVAL
823 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
824 return;
825
687 /* 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 */
688 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 828 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
689 829
690 child_reap (EV_A_ sw, pid, pid, status); 830 child_reap (EV_A_ sw, pid, pid, status);
831 if (EV_PID_HASHSIZE > 1)
691 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 */
692 }
693} 833}
694 834
695#endif 835#endif
696 836
697/*****************************************************************************/ 837/*****************************************************************************/
698 838
839#if EV_USE_PORT
840# include "ev_port.c"
841#endif
699#if EV_USE_KQUEUE 842#if EV_USE_KQUEUE
700# include "ev_kqueue.c" 843# include "ev_kqueue.c"
701#endif 844#endif
702#if EV_USE_EPOLL 845#if EV_USE_EPOLL
703# include "ev_epoll.c" 846# include "ev_epoll.c"
… …
720{ 863{
721 return EV_VERSION_MINOR; 864 return EV_VERSION_MINOR;
722} 865}
723 866
724/* 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 */
725static int 868int inline_size
726enable_secure (void) 869enable_secure (void)
727{ 870{
728#ifdef WIN32 871#ifdef _WIN32
729 return 0; 872 return 0;
730#else 873#else
731 return getuid () != geteuid () 874 return getuid () != geteuid ()
732 || getgid () != getegid (); 875 || getgid () != getegid ();
733#endif 876#endif
734} 877}
735 878
736int 879unsigned int
737ev_method (EV_P) 880ev_supported_backends (void)
738{ 881{
739 return method; 882 unsigned int flags = 0;
740}
741 883
742static void 884 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
743loop_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)
744{ 895{
745 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)
746 { 935 {
747#if EV_USE_MONOTONIC 936#if EV_USE_MONOTONIC
748 { 937 {
749 struct timespec ts; 938 struct timespec ts;
750 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 939 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
… …
755 ev_rt_now = ev_time (); 944 ev_rt_now = ev_time ();
756 mn_now = get_clock (); 945 mn_now = get_clock ();
757 now_floor = mn_now; 946 now_floor = mn_now;
758 rtmn_diff = ev_rt_now - mn_now; 947 rtmn_diff = ev_rt_now - mn_now;
759 948
760 if (methods == EVMETHOD_AUTO) 949 /* pid check not overridable via env */
761 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"))
762 methods = atoi (getenv ("LIBEV_METHODS")); 958 flags = atoi (getenv ("LIBEV_FLAGS"));
763 else
764 methods = EVMETHOD_ANY;
765 959
766 method = 0; 960 if (!(flags & 0x0000ffffUL))
961 flags |= ev_recommended_backends ();
962
963 backend = 0;
964 backend_fd = -1;
767#if EV_USE_WIN32 965#if EV_USE_INOTIFY
768 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);
769#endif 971#endif
770#if EV_USE_KQUEUE 972#if EV_USE_KQUEUE
771 if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods); 973 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
772#endif 974#endif
773#if EV_USE_EPOLL 975#if EV_USE_EPOLL
774 if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods); 976 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
775#endif 977#endif
776#if EV_USE_POLL 978#if EV_USE_POLL
777 if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods); 979 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
778#endif 980#endif
779#if EV_USE_SELECT 981#if EV_USE_SELECT
780 if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods); 982 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
781#endif 983#endif
782 984
783 ev_init (&sigev, sigcb); 985 ev_init (&sigev, sigcb);
784 ev_set_priority (&sigev, EV_MAXPRI); 986 ev_set_priority (&sigev, EV_MAXPRI);
785 } 987 }
786} 988}
787 989
788void 990static void noinline
789loop_destroy (EV_P) 991loop_destroy (EV_P)
790{ 992{
791 int i; 993 int i;
792 994
793#if EV_USE_WIN32 995#if EV_USE_INOTIFY
794 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);
795#endif 1005#endif
796#if EV_USE_KQUEUE 1006#if EV_USE_KQUEUE
797 if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A); 1007 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
798#endif 1008#endif
799#if EV_USE_EPOLL 1009#if EV_USE_EPOLL
800 if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A); 1010 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
801#endif 1011#endif
802#if EV_USE_POLL 1012#if EV_USE_POLL
803 if (method == EVMETHOD_POLL ) poll_destroy (EV_A); 1013 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
804#endif 1014#endif
805#if EV_USE_SELECT 1015#if EV_USE_SELECT
806 if (method == EVMETHOD_SELECT) select_destroy (EV_A); 1016 if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
807#endif 1017#endif
808 1018
809 for (i = NUMPRI; i--; ) 1019 for (i = NUMPRI; i--; )
1020 {
810 array_free (pending, [i]); 1021 array_free (pending, [i]);
1022#if EV_IDLE_ENABLE
1023 array_free (idle, [i]);
1024#endif
1025 }
811 1026
812 /* have to use the microsoft-never-gets-it-right macro */ 1027 /* have to use the microsoft-never-gets-it-right macro */
813 array_free_microshit (fdchange); 1028 array_free (fdchange, EMPTY);
814 array_free_microshit (timer); 1029 array_free (timer, EMPTY);
815#if EV_PERIODICS 1030#if EV_PERIODIC_ENABLE
816 array_free_microshit (periodic); 1031 array_free (periodic, EMPTY);
817#endif 1032#endif
818 array_free_microshit (idle); 1033 array_free (prepare, EMPTY);
819 array_free_microshit (prepare); 1034 array_free (check, EMPTY);
820 array_free_microshit (check);
821 1035
822 method = 0; 1036 backend = 0;
823} 1037}
824 1038
825static void 1039void inline_size infy_fork (EV_P);
1040
1041void inline_size
826loop_fork (EV_P) 1042loop_fork (EV_P)
827{ 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
828#if EV_USE_EPOLL 1050#if EV_USE_EPOLL
829 if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A); 1051 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
830#endif 1052#endif
831#if EV_USE_KQUEUE 1053#if EV_USE_INOTIFY
832 if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A); 1054 infy_fork (EV_A);
833#endif 1055#endif
834 1056
835 if (ev_is_active (&sigev)) 1057 if (ev_is_active (&sigev))
836 { 1058 {
837 /* default loop */ 1059 /* default loop */
… …
850 postfork = 0; 1072 postfork = 0;
851} 1073}
852 1074
853#if EV_MULTIPLICITY 1075#if EV_MULTIPLICITY
854struct ev_loop * 1076struct ev_loop *
855ev_loop_new (int methods) 1077ev_loop_new (unsigned int flags)
856{ 1078{
857 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));
858 1080
859 memset (loop, 0, sizeof (struct ev_loop)); 1081 memset (loop, 0, sizeof (struct ev_loop));
860 1082
861 loop_init (EV_A_ methods); 1083 loop_init (EV_A_ flags);
862 1084
863 if (ev_method (EV_A)) 1085 if (ev_backend (EV_A))
864 return loop; 1086 return loop;
865 1087
866 return 0; 1088 return 0;
867} 1089}
868 1090
… …
881 1103
882#endif 1104#endif
883 1105
884#if EV_MULTIPLICITY 1106#if EV_MULTIPLICITY
885struct ev_loop * 1107struct ev_loop *
1108ev_default_loop_init (unsigned int flags)
886#else 1109#else
887int 1110int
1111ev_default_loop (unsigned int flags)
888#endif 1112#endif
889ev_default_loop (int methods)
890{ 1113{
891 if (sigpipe [0] == sigpipe [1]) 1114 if (sigpipe [0] == sigpipe [1])
892 if (pipe (sigpipe)) 1115 if (pipe (sigpipe))
893 return 0; 1116 return 0;
894 1117
895 if (!default_loop) 1118 if (!ev_default_loop_ptr)
896 { 1119 {
897#if EV_MULTIPLICITY 1120#if EV_MULTIPLICITY
898 struct ev_loop *loop = default_loop = &default_loop_struct; 1121 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
899#else 1122#else
900 default_loop = 1; 1123 ev_default_loop_ptr = 1;
901#endif 1124#endif
902 1125
903 loop_init (EV_A_ methods); 1126 loop_init (EV_A_ flags);
904 1127
905 if (ev_method (EV_A)) 1128 if (ev_backend (EV_A))
906 { 1129 {
907 siginit (EV_A); 1130 siginit (EV_A);
908 1131
909#ifndef WIN32 1132#ifndef _WIN32
910 ev_signal_init (&childev, childcb, SIGCHLD); 1133 ev_signal_init (&childev, childcb, SIGCHLD);
911 ev_set_priority (&childev, EV_MAXPRI); 1134 ev_set_priority (&childev, EV_MAXPRI);
912 ev_signal_start (EV_A_ &childev); 1135 ev_signal_start (EV_A_ &childev);
913 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1136 ev_unref (EV_A); /* child watcher should not keep loop alive */
914#endif 1137#endif
915 } 1138 }
916 else 1139 else
917 default_loop = 0; 1140 ev_default_loop_ptr = 0;
918 } 1141 }
919 1142
920 return default_loop; 1143 return ev_default_loop_ptr;
921} 1144}
922 1145
923void 1146void
924ev_default_destroy (void) 1147ev_default_destroy (void)
925{ 1148{
926#if EV_MULTIPLICITY 1149#if EV_MULTIPLICITY
927 struct ev_loop *loop = default_loop; 1150 struct ev_loop *loop = ev_default_loop_ptr;
928#endif 1151#endif
929 1152
930#ifndef WIN32 1153#ifndef _WIN32
931 ev_ref (EV_A); /* child watcher */ 1154 ev_ref (EV_A); /* child watcher */
932 ev_signal_stop (EV_A_ &childev); 1155 ev_signal_stop (EV_A_ &childev);
933#endif 1156#endif
934 1157
935 ev_ref (EV_A); /* signal watcher */ 1158 ev_ref (EV_A); /* signal watcher */
… …
943 1166
944void 1167void
945ev_default_fork (void) 1168ev_default_fork (void)
946{ 1169{
947#if EV_MULTIPLICITY 1170#if EV_MULTIPLICITY
948 struct ev_loop *loop = default_loop; 1171 struct ev_loop *loop = ev_default_loop_ptr;
949#endif 1172#endif
950 1173
951 if (method) 1174 if (backend)
952 postfork = 1; 1175 postfork = 1;
953} 1176}
954 1177
955/*****************************************************************************/ 1178/*****************************************************************************/
956 1179
957static int 1180void
958any_pending (EV_P) 1181ev_invoke (EV_P_ void *w, int revents)
959{ 1182{
960 int pri; 1183 EV_CB_INVOKE ((W)w, revents);
961
962 for (pri = NUMPRI; pri--; )
963 if (pendingcnt [pri])
964 return 1;
965
966 return 0;
967} 1184}
968 1185
969static void 1186void inline_speed
970call_pending (EV_P) 1187call_pending (EV_P)
971{ 1188{
972 int pri; 1189 int pri;
973 1190
974 for (pri = NUMPRI; pri--; ) 1191 for (pri = NUMPRI; pri--; )
975 while (pendingcnt [pri]) 1192 while (pendingcnt [pri])
976 { 1193 {
977 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 1194 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
978 1195
979 if (p->w) 1196 if (expect_true (p->w))
980 { 1197 {
1198 /*assert (("non-pending watcher on pending list", p->w->pending));*/
1199
981 p->w->pending = 0; 1200 p->w->pending = 0;
982 EV_CB_INVOKE (p->w, p->events); 1201 EV_CB_INVOKE (p->w, p->events);
983 } 1202 }
984 } 1203 }
985} 1204}
986 1205
987static void 1206void inline_size
988timers_reify (EV_P) 1207timers_reify (EV_P)
989{ 1208{
990 while (timercnt && ((WT)timers [0])->at <= mn_now) 1209 while (timercnt && ((WT)timers [0])->at <= mn_now)
991 { 1210 {
992 struct ev_timer *w = timers [0]; 1211 ev_timer *w = timers [0];
993 1212
994 assert (("inactive timer on timer heap detected", ev_is_active (w))); 1213 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
995 1214
996 /* first reschedule or stop timer */ 1215 /* first reschedule or stop timer */
997 if (w->repeat) 1216 if (w->repeat)
998 { 1217 {
999 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.));
… …
1009 1228
1010 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); 1229 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1011 } 1230 }
1012} 1231}
1013 1232
1014#if EV_PERIODICS 1233#if EV_PERIODIC_ENABLE
1015static void 1234void inline_size
1016periodics_reify (EV_P) 1235periodics_reify (EV_P)
1017{ 1236{
1018 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now) 1237 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1019 { 1238 {
1020 struct ev_periodic *w = periodics [0]; 1239 ev_periodic *w = periodics [0];
1021 1240
1022 assert (("inactive timer on periodic heap detected", ev_is_active (w))); 1241 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1023 1242
1024 /* first reschedule or stop timer */ 1243 /* first reschedule or stop timer */
1025 if (w->reschedule_cb) 1244 if (w->reschedule_cb)
1026 { 1245 {
1027 ev_tstamp at = ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001); 1246 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1028
1029 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now)); 1247 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1030 downheap ((WT *)periodics, periodiccnt, 0); 1248 downheap ((WT *)periodics, periodiccnt, 0);
1031 } 1249 }
1032 else if (w->interval) 1250 else if (w->interval)
1033 { 1251 {
1034 ((WT)w)->at += floor ((ev_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;
1035 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now)); 1254 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1036 downheap ((WT *)periodics, periodiccnt, 0); 1255 downheap ((WT *)periodics, periodiccnt, 0);
1037 } 1256 }
1038 else 1257 else
1039 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 1258 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1040 1259
1041 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 1260 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1042 } 1261 }
1043} 1262}
1044 1263
1045static void 1264static void noinline
1046periodics_reschedule (EV_P) 1265periodics_reschedule (EV_P)
1047{ 1266{
1048 int i; 1267 int i;
1049 1268
1050 /* adjust periodics after time jump */ 1269 /* adjust periodics after time jump */
1051 for (i = 0; i < periodiccnt; ++i) 1270 for (i = 0; i < periodiccnt; ++i)
1052 { 1271 {
1053 struct ev_periodic *w = periodics [i]; 1272 ev_periodic *w = periodics [i];
1054 1273
1055 if (w->reschedule_cb) 1274 if (w->reschedule_cb)
1056 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 1275 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1057 else if (w->interval) 1276 else if (w->interval)
1058 ((WT)w)->at += ceil ((ev_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;
1059 } 1278 }
1060 1279
1061 /* now rebuild the heap */ 1280 /* now rebuild the heap */
1062 for (i = periodiccnt >> 1; i--; ) 1281 for (i = periodiccnt >> 1; i--; )
1063 downheap ((WT *)periodics, periodiccnt, i); 1282 downheap ((WT *)periodics, periodiccnt, i);
1064} 1283}
1065#endif 1284#endif
1066 1285
1067inline int 1286#if EV_IDLE_ENABLE
1287void inline_size
1288idle_reify (EV_P)
1289{
1290 if (expect_false (idleall))
1291 {
1292 int pri;
1293
1294 for (pri = NUMPRI; pri--; )
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 }
1305 }
1306}
1307#endif
1308
1309int inline_size
1068time_update_monotonic (EV_P) 1310time_update_monotonic (EV_P)
1069{ 1311{
1070 mn_now = get_clock (); 1312 mn_now = get_clock ();
1071 1313
1072 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 1314 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
… …
1080 ev_rt_now = ev_time (); 1322 ev_rt_now = ev_time ();
1081 return 1; 1323 return 1;
1082 } 1324 }
1083} 1325}
1084 1326
1085static void 1327void inline_size
1086time_update (EV_P) 1328time_update (EV_P)
1087{ 1329{
1088 int i; 1330 int i;
1089 1331
1090#if EV_USE_MONOTONIC 1332#if EV_USE_MONOTONIC
… …
1092 { 1334 {
1093 if (time_update_monotonic (EV_A)) 1335 if (time_update_monotonic (EV_A))
1094 { 1336 {
1095 ev_tstamp odiff = rtmn_diff; 1337 ev_tstamp odiff = rtmn_diff;
1096 1338
1097 for (i = 4; --i; ) /* loop a few times, before making important decisions */ 1339 /* loop a few times, before making important decisions.
1340 * on the choice of "4": one iteration isn't enough,
1341 * in case we get preempted during the calls to
1342 * ev_time and get_clock. a second call is almost guaranteed
1343 * to succeed in that case, though. and looping a few more times
1344 * doesn't hurt either as we only do this on time-jumps or
1345 * in the unlikely event of having been preempted here.
1346 */
1347 for (i = 4; --i; )
1098 { 1348 {
1099 rtmn_diff = ev_rt_now - mn_now; 1349 rtmn_diff = ev_rt_now - mn_now;
1100 1350
1101 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) 1351 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1102 return; /* all is well */ 1352 return; /* all is well */
… …
1104 ev_rt_now = ev_time (); 1354 ev_rt_now = ev_time ();
1105 mn_now = get_clock (); 1355 mn_now = get_clock ();
1106 now_floor = mn_now; 1356 now_floor = mn_now;
1107 } 1357 }
1108 1358
1109# if EV_PERIODICS 1359# if EV_PERIODIC_ENABLE
1110 periodics_reschedule (EV_A); 1360 periodics_reschedule (EV_A);
1111# endif 1361# endif
1112 /* no timer adjustment, as the monotonic clock doesn't jump */ 1362 /* no timer adjustment, as the monotonic clock doesn't jump */
1113 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */ 1363 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1114 } 1364 }
… …
1118 { 1368 {
1119 ev_rt_now = ev_time (); 1369 ev_rt_now = ev_time ();
1120 1370
1121 if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP)) 1371 if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
1122 { 1372 {
1123#if EV_PERIODICS 1373#if EV_PERIODIC_ENABLE
1124 periodics_reschedule (EV_A); 1374 periodics_reschedule (EV_A);
1125#endif 1375#endif
1126
1127 /* adjust timers. this is easy, as the offset is the same for all */ 1376 /* adjust timers. this is easy, as the offset is the same for all of them */
1128 for (i = 0; i < timercnt; ++i) 1377 for (i = 0; i < timercnt; ++i)
1129 ((WT)timers [i])->at += ev_rt_now - mn_now; 1378 ((WT)timers [i])->at += ev_rt_now - mn_now;
1130 } 1379 }
1131 1380
1132 mn_now = ev_rt_now; 1381 mn_now = ev_rt_now;
… …
1148static int loop_done; 1397static int loop_done;
1149 1398
1150void 1399void
1151ev_loop (EV_P_ int flags) 1400ev_loop (EV_P_ int flags)
1152{ 1401{
1153 double block;
1154 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0; 1402 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
1403 ? EVUNLOOP_ONE
1404 : EVUNLOOP_CANCEL;
1405
1406 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
1155 1407
1156 do 1408 do
1157 { 1409 {
1410#ifndef _WIN32
1411 if (expect_false (curpid)) /* penalise the forking check even more */
1412 if (expect_false (getpid () != curpid))
1413 {
1414 curpid = getpid ();
1415 postfork = 1;
1416 }
1417#endif
1418
1419#if EV_FORK_ENABLE
1420 /* we might have forked, so queue fork handlers */
1421 if (expect_false (postfork))
1422 if (forkcnt)
1423 {
1424 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1425 call_pending (EV_A);
1426 }
1427#endif
1428
1158 /* queue check watchers (and execute them) */ 1429 /* queue prepare watchers (and execute them) */
1159 if (expect_false (preparecnt)) 1430 if (expect_false (preparecnt))
1160 { 1431 {
1161 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 1432 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1162 call_pending (EV_A); 1433 call_pending (EV_A);
1163 } 1434 }
1164 1435
1436 if (expect_false (!activecnt))
1437 break;
1438
1165 /* we might have forked, so reify kernel state if necessary */ 1439 /* we might have forked, so reify kernel state if necessary */
1166 if (expect_false (postfork)) 1440 if (expect_false (postfork))
1167 loop_fork (EV_A); 1441 loop_fork (EV_A);
1168 1442
1169 /* update fd-related kernel structures */ 1443 /* update fd-related kernel structures */
1170 fd_reify (EV_A); 1444 fd_reify (EV_A);
1171 1445
1172 /* calculate blocking time */ 1446 /* calculate blocking time */
1447 {
1448 ev_tstamp block;
1173 1449
1174 /* we only need this for !monotonic clock or timers, but as we basically 1450 if (expect_false (flags & EVLOOP_NONBLOCK || idleall || !activecnt))
1175 always have timers, we just calculate it always */ 1451 block = 0.; /* do not block at all */
1452 else
1453 {
1454 /* update time to cancel out callback processing overhead */
1176#if EV_USE_MONOTONIC 1455#if EV_USE_MONOTONIC
1177 if (expect_true (have_monotonic)) 1456 if (expect_true (have_monotonic))
1178 time_update_monotonic (EV_A); 1457 time_update_monotonic (EV_A);
1179 else 1458 else
1180#endif 1459#endif
1181 { 1460 {
1182 ev_rt_now = ev_time (); 1461 ev_rt_now = ev_time ();
1183 mn_now = ev_rt_now; 1462 mn_now = ev_rt_now;
1184 } 1463 }
1185 1464
1186 if (flags & EVLOOP_NONBLOCK || idlecnt)
1187 block = 0.;
1188 else
1189 {
1190 block = MAX_BLOCKTIME; 1465 block = MAX_BLOCKTIME;
1191 1466
1192 if (timercnt) 1467 if (timercnt)
1193 { 1468 {
1194 ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge; 1469 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1195 if (block > to) block = to; 1470 if (block > to) block = to;
1196 } 1471 }
1197 1472
1198#if EV_PERIODICS 1473#if EV_PERIODIC_ENABLE
1199 if (periodiccnt) 1474 if (periodiccnt)
1200 { 1475 {
1201 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge; 1476 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1202 if (block > to) block = to; 1477 if (block > to) block = to;
1203 } 1478 }
1204#endif 1479#endif
1205 1480
1206 if (block < 0.) block = 0.; 1481 if (expect_false (block < 0.)) block = 0.;
1207 } 1482 }
1208 1483
1484 ++loop_count;
1209 method_poll (EV_A_ block); 1485 backend_poll (EV_A_ block);
1486 }
1210 1487
1211 /* update ev_rt_now, do magic */ 1488 /* update ev_rt_now, do magic */
1212 time_update (EV_A); 1489 time_update (EV_A);
1213 1490
1214 /* queue pending timers and reschedule them */ 1491 /* queue pending timers and reschedule them */
1215 timers_reify (EV_A); /* relative timers called last */ 1492 timers_reify (EV_A); /* relative timers called last */
1216#if EV_PERIODICS 1493#if EV_PERIODIC_ENABLE
1217 periodics_reify (EV_A); /* absolute timers called first */ 1494 periodics_reify (EV_A); /* absolute timers called first */
1218#endif 1495#endif
1219 1496
1497#if EV_IDLE_ENABLE
1220 /* queue idle watchers unless io or timers are pending */ 1498 /* queue idle watchers unless other events are pending */
1221 if (idlecnt && !any_pending (EV_A)) 1499 idle_reify (EV_A);
1222 queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); 1500#endif
1223 1501
1224 /* queue check watchers, to be executed first */ 1502 /* queue check watchers, to be executed first */
1225 if (checkcnt) 1503 if (expect_false (checkcnt))
1226 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 1504 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1227 1505
1228 call_pending (EV_A); 1506 call_pending (EV_A);
1507
1229 } 1508 }
1230 while (activecnt && !loop_done); 1509 while (expect_true (activecnt && !loop_done));
1231 1510
1232 if (loop_done != 2) 1511 if (loop_done == EVUNLOOP_ONE)
1233 loop_done = 0; 1512 loop_done = EVUNLOOP_CANCEL;
1234} 1513}
1235 1514
1236void 1515void
1237ev_unloop (EV_P_ int how) 1516ev_unloop (EV_P_ int how)
1238{ 1517{
1239 loop_done = how; 1518 loop_done = how;
1240} 1519}
1241 1520
1242/*****************************************************************************/ 1521/*****************************************************************************/
1243 1522
1244inline void 1523void inline_size
1245wlist_add (WL *head, WL elem) 1524wlist_add (WL *head, WL elem)
1246{ 1525{
1247 elem->next = *head; 1526 elem->next = *head;
1248 *head = elem; 1527 *head = elem;
1249} 1528}
1250 1529
1251inline void 1530void inline_size
1252wlist_del (WL *head, WL elem) 1531wlist_del (WL *head, WL elem)
1253{ 1532{
1254 while (*head) 1533 while (*head)
1255 { 1534 {
1256 if (*head == elem) 1535 if (*head == elem)
… …
1261 1540
1262 head = &(*head)->next; 1541 head = &(*head)->next;
1263 } 1542 }
1264} 1543}
1265 1544
1266inline void 1545void inline_speed
1267ev_clear_pending (EV_P_ W w) 1546clear_pending (EV_P_ W w)
1268{ 1547{
1269 if (w->pending) 1548 if (w->pending)
1270 { 1549 {
1271 pendings [ABSPRI (w)][w->pending - 1].w = 0; 1550 pendings [ABSPRI (w)][w->pending - 1].w = 0;
1272 w->pending = 0; 1551 w->pending = 0;
1273 } 1552 }
1274} 1553}
1275 1554
1276inline void 1555int
1556ev_clear_pending (EV_P_ void *w)
1557{
1558 W w_ = (W)w;
1559 int pending = w_->pending;
1560
1561 if (expect_true (pending))
1562 {
1563 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
1564 w_->pending = 0;
1565 p->w = 0;
1566 return p->events;
1567 }
1568 else
1569 return 0;
1570}
1571
1572void inline_size
1573pri_adjust (EV_P_ W w)
1574{
1575 int pri = w->priority;
1576 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1577 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1578 w->priority = pri;
1579}
1580
1581void inline_speed
1277ev_start (EV_P_ W w, int active) 1582ev_start (EV_P_ W w, int active)
1278{ 1583{
1279 if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; 1584 pri_adjust (EV_A_ w);
1280 if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1281
1282 w->active = active; 1585 w->active = active;
1283 ev_ref (EV_A); 1586 ev_ref (EV_A);
1284} 1587}
1285 1588
1286inline void 1589void inline_size
1287ev_stop (EV_P_ W w) 1590ev_stop (EV_P_ W w)
1288{ 1591{
1289 ev_unref (EV_A); 1592 ev_unref (EV_A);
1290 w->active = 0; 1593 w->active = 0;
1291} 1594}
1292 1595
1293/*****************************************************************************/ 1596/*****************************************************************************/
1294 1597
1295void 1598void noinline
1296ev_io_start (EV_P_ struct ev_io *w) 1599ev_io_start (EV_P_ ev_io *w)
1297{ 1600{
1298 int fd = w->fd; 1601 int fd = w->fd;
1299 1602
1300 if (ev_is_active (w)) 1603 if (expect_false (ev_is_active (w)))
1301 return; 1604 return;
1302 1605
1303 assert (("ev_io_start called with negative fd", fd >= 0)); 1606 assert (("ev_io_start called with negative fd", fd >= 0));
1304 1607
1305 ev_start (EV_A_ (W)w, 1); 1608 ev_start (EV_A_ (W)w, 1);
… …
1307 wlist_add ((WL *)&anfds[fd].head, (WL)w); 1610 wlist_add ((WL *)&anfds[fd].head, (WL)w);
1308 1611
1309 fd_change (EV_A_ fd); 1612 fd_change (EV_A_ fd);
1310} 1613}
1311 1614
1312void 1615void noinline
1313ev_io_stop (EV_P_ struct ev_io *w) 1616ev_io_stop (EV_P_ ev_io *w)
1314{ 1617{
1315 ev_clear_pending (EV_A_ (W)w); 1618 clear_pending (EV_A_ (W)w);
1316 if (!ev_is_active (w)) 1619 if (expect_false (!ev_is_active (w)))
1317 return; 1620 return;
1318 1621
1319 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 1622 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1320 1623
1321 wlist_del ((WL *)&anfds[w->fd].head, (WL)w); 1624 wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
1322 ev_stop (EV_A_ (W)w); 1625 ev_stop (EV_A_ (W)w);
1323 1626
1324 fd_change (EV_A_ w->fd); 1627 fd_change (EV_A_ w->fd);
1325} 1628}
1326 1629
1327void 1630void noinline
1328ev_timer_start (EV_P_ struct ev_timer *w) 1631ev_timer_start (EV_P_ ev_timer *w)
1329{ 1632{
1330 if (ev_is_active (w)) 1633 if (expect_false (ev_is_active (w)))
1331 return; 1634 return;
1332 1635
1333 ((WT)w)->at += mn_now; 1636 ((WT)w)->at += mn_now;
1334 1637
1335 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 1638 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1336 1639
1337 ev_start (EV_A_ (W)w, ++timercnt); 1640 ev_start (EV_A_ (W)w, ++timercnt);
1338 array_needsize (struct ev_timer *, timers, timermax, timercnt, (void)); 1641 array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);
1339 timers [timercnt - 1] = w; 1642 timers [timercnt - 1] = w;
1340 upheap ((WT *)timers, timercnt - 1); 1643 upheap ((WT *)timers, timercnt - 1);
1341 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
1342 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 1655 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1343}
1344 1656
1345void 1657 {
1346ev_timer_stop (EV_P_ struct ev_timer *w) 1658 int active = ((W)w)->active;
1347{
1348 ev_clear_pending (EV_A_ (W)w);
1349 if (!ev_is_active (w))
1350 return;
1351 1659
1352 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 1660 if (expect_true (--active < --timercnt))
1353
1354 if (((W)w)->active < timercnt--)
1355 { 1661 {
1356 timers [((W)w)->active - 1] = timers [timercnt]; 1662 timers [active] = timers [timercnt];
1357 downheap ((WT *)timers, timercnt, ((W)w)->active - 1); 1663 adjustheap ((WT *)timers, timercnt, active);
1358 } 1664 }
1665 }
1359 1666
1360 ((WT)w)->at -= mn_now; 1667 ((WT)w)->at -= mn_now;
1361 1668
1362 ev_stop (EV_A_ (W)w); 1669 ev_stop (EV_A_ (W)w);
1363} 1670}
1364 1671
1365void 1672void noinline
1366ev_timer_again (EV_P_ struct ev_timer *w) 1673ev_timer_again (EV_P_ ev_timer *w)
1367{ 1674{
1368 if (ev_is_active (w)) 1675 if (ev_is_active (w))
1369 { 1676 {
1370 if (w->repeat) 1677 if (w->repeat)
1678 {
1679 ((WT)w)->at = mn_now + w->repeat;
1371 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1, mn_now + w->repeat); 1680 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1681 }
1372 else 1682 else
1373 ev_timer_stop (EV_A_ w); 1683 ev_timer_stop (EV_A_ w);
1374 } 1684 }
1375 else if (w->repeat) 1685 else if (w->repeat)
1686 {
1687 w->at = w->repeat;
1376 ev_timer_start (EV_A_ w); 1688 ev_timer_start (EV_A_ w);
1689 }
1377} 1690}
1378 1691
1379#if EV_PERIODICS 1692#if EV_PERIODIC_ENABLE
1380void 1693void noinline
1381ev_periodic_start (EV_P_ struct ev_periodic *w) 1694ev_periodic_start (EV_P_ ev_periodic *w)
1382{ 1695{
1383 if (ev_is_active (w)) 1696 if (expect_false (ev_is_active (w)))
1384 return; 1697 return;
1385 1698
1386 if (w->reschedule_cb) 1699 if (w->reschedule_cb)
1387 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 1700 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1388 else if (w->interval) 1701 else if (w->interval)
1389 { 1702 {
1390 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.));
1391 /* 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 */
1392 ((WT)w)->at += ceil ((ev_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;
1393 } 1706 }
1707 else
1708 ((WT)w)->at = w->offset;
1394 1709
1395 ev_start (EV_A_ (W)w, ++periodiccnt); 1710 ev_start (EV_A_ (W)w, ++periodiccnt);
1396 array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void)); 1711 array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1397 periodics [periodiccnt - 1] = w; 1712 periodics [periodiccnt - 1] = w;
1398 upheap ((WT *)periodics, periodiccnt - 1); 1713 upheap ((WT *)periodics, periodiccnt - 1);
1399 1714
1715 /*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
1716}
1717
1718void noinline
1719ev_periodic_stop (EV_P_ ev_periodic *w)
1720{
1721 clear_pending (EV_A_ (W)w);
1722 if (expect_false (!ev_is_active (w)))
1723 return;
1724
1400 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1725 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1401}
1402 1726
1403void 1727 {
1404ev_periodic_stop (EV_P_ struct ev_periodic *w) 1728 int active = ((W)w)->active;
1405{
1406 ev_clear_pending (EV_A_ (W)w);
1407 if (!ev_is_active (w))
1408 return;
1409 1729
1410 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1730 if (expect_true (--active < --periodiccnt))
1411
1412 if (((W)w)->active < periodiccnt--)
1413 { 1731 {
1414 periodics [((W)w)->active - 1] = periodics [periodiccnt]; 1732 periodics [active] = periodics [periodiccnt];
1415 downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1); 1733 adjustheap ((WT *)periodics, periodiccnt, active);
1416 } 1734 }
1735 }
1417 1736
1418 ev_stop (EV_A_ (W)w); 1737 ev_stop (EV_A_ (W)w);
1419} 1738}
1420 1739
1421void 1740void noinline
1422ev_periodic_again (EV_P_ struct ev_periodic *w) 1741ev_periodic_again (EV_P_ ev_periodic *w)
1423{ 1742{
1424 /* TODO: use adjustheap and recalculation */ 1743 /* TODO: use adjustheap and recalculation */
1425 ev_periodic_stop (EV_A_ w); 1744 ev_periodic_stop (EV_A_ w);
1426 ev_periodic_start (EV_A_ w); 1745 ev_periodic_start (EV_A_ w);
1427} 1746}
1428#endif 1747#endif
1429 1748
1430void
1431ev_idle_start (EV_P_ struct ev_idle *w)
1432{
1433 if (ev_is_active (w))
1434 return;
1435
1436 ev_start (EV_A_ (W)w, ++idlecnt);
1437 array_needsize (struct ev_idle *, idles, idlemax, idlecnt, (void));
1438 idles [idlecnt - 1] = w;
1439}
1440
1441void
1442ev_idle_stop (EV_P_ struct ev_idle *w)
1443{
1444 ev_clear_pending (EV_A_ (W)w);
1445 if (ev_is_active (w))
1446 return;
1447
1448 idles [((W)w)->active - 1] = idles [--idlecnt];
1449 ev_stop (EV_A_ (W)w);
1450}
1451
1452void
1453ev_prepare_start (EV_P_ struct ev_prepare *w)
1454{
1455 if (ev_is_active (w))
1456 return;
1457
1458 ev_start (EV_A_ (W)w, ++preparecnt);
1459 array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, (void));
1460 prepares [preparecnt - 1] = w;
1461}
1462
1463void
1464ev_prepare_stop (EV_P_ struct ev_prepare *w)
1465{
1466 ev_clear_pending (EV_A_ (W)w);
1467 if (ev_is_active (w))
1468 return;
1469
1470 prepares [((W)w)->active - 1] = prepares [--preparecnt];
1471 ev_stop (EV_A_ (W)w);
1472}
1473
1474void
1475ev_check_start (EV_P_ struct ev_check *w)
1476{
1477 if (ev_is_active (w))
1478 return;
1479
1480 ev_start (EV_A_ (W)w, ++checkcnt);
1481 array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void));
1482 checks [checkcnt - 1] = w;
1483}
1484
1485void
1486ev_check_stop (EV_P_ struct ev_check *w)
1487{
1488 ev_clear_pending (EV_A_ (W)w);
1489 if (!ev_is_active (w))
1490 return;
1491
1492 checks [((W)w)->active - 1] = checks [--checkcnt];
1493 ev_stop (EV_A_ (W)w);
1494}
1495
1496#ifndef SA_RESTART 1749#ifndef SA_RESTART
1497# define SA_RESTART 0 1750# define SA_RESTART 0
1498#endif 1751#endif
1499 1752
1500void 1753void noinline
1501ev_signal_start (EV_P_ struct ev_signal *w) 1754ev_signal_start (EV_P_ ev_signal *w)
1502{ 1755{
1503#if EV_MULTIPLICITY 1756#if EV_MULTIPLICITY
1504 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));
1505#endif 1758#endif
1506 if (ev_is_active (w)) 1759 if (expect_false (ev_is_active (w)))
1507 return; 1760 return;
1508 1761
1509 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));
1510 1763
1511 ev_start (EV_A_ (W)w, 1); 1764 ev_start (EV_A_ (W)w, 1);
1512 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); 1765 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1513 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); 1766 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1514 1767
1515 if (!((WL)w)->next) 1768 if (!((WL)w)->next)
1516 { 1769 {
1517#if WIN32 1770#if _WIN32
1518 signal (w->signum, sighandler); 1771 signal (w->signum, sighandler);
1519#else 1772#else
1520 struct sigaction sa; 1773 struct sigaction sa;
1521 sa.sa_handler = sighandler; 1774 sa.sa_handler = sighandler;
1522 sigfillset (&sa.sa_mask); 1775 sigfillset (&sa.sa_mask);
… …
1524 sigaction (w->signum, &sa, 0); 1777 sigaction (w->signum, &sa, 0);
1525#endif 1778#endif
1526 } 1779 }
1527} 1780}
1528 1781
1529void 1782void noinline
1530ev_signal_stop (EV_P_ struct ev_signal *w) 1783ev_signal_stop (EV_P_ ev_signal *w)
1531{ 1784{
1532 ev_clear_pending (EV_A_ (W)w); 1785 clear_pending (EV_A_ (W)w);
1533 if (!ev_is_active (w)) 1786 if (expect_false (!ev_is_active (w)))
1534 return; 1787 return;
1535 1788
1536 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); 1789 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1537 ev_stop (EV_A_ (W)w); 1790 ev_stop (EV_A_ (W)w);
1538 1791
1539 if (!signals [w->signum - 1].head) 1792 if (!signals [w->signum - 1].head)
1540 signal (w->signum, SIG_DFL); 1793 signal (w->signum, SIG_DFL);
1541} 1794}
1542 1795
1543void 1796void
1544ev_child_start (EV_P_ struct ev_child *w) 1797ev_child_start (EV_P_ ev_child *w)
1545{ 1798{
1546#if EV_MULTIPLICITY 1799#if EV_MULTIPLICITY
1547 assert (("child watchers are only supported in the default loop", loop == default_loop)); 1800 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1548#endif 1801#endif
1549 if (ev_is_active (w)) 1802 if (expect_false (ev_is_active (w)))
1550 return; 1803 return;
1551 1804
1552 ev_start (EV_A_ (W)w, 1); 1805 ev_start (EV_A_ (W)w, 1);
1553 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1806 wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1554} 1807}
1555 1808
1556void 1809void
1557ev_child_stop (EV_P_ struct ev_child *w) 1810ev_child_stop (EV_P_ ev_child *w)
1558{ 1811{
1559 ev_clear_pending (EV_A_ (W)w); 1812 clear_pending (EV_A_ (W)w);
1560 if (!ev_is_active (w)) 1813 if (expect_false (!ev_is_active (w)))
1561 return; 1814 return;
1562 1815
1563 wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1816 wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1564 ev_stop (EV_A_ (W)w); 1817 ev_stop (EV_A_ (W)w);
1565} 1818}
1566 1819
1820#if EV_STAT_ENABLE
1821
1822# ifdef _WIN32
1823# undef lstat
1824# define lstat(a,b) _stati64 (a,b)
1825# endif
1826
1827#define DEF_STAT_INTERVAL 5.0074891
1828#define MIN_STAT_INTERVAL 0.1074891
1829
1830static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
1831
1832#if EV_USE_INOTIFY
1833# define EV_INOTIFY_BUFSIZE 8192
1834
1835static void noinline
1836infy_add (EV_P_ ev_stat *w)
1837{
1838 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);
1839
1840 if (w->wd < 0)
1841 {
1842 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
1843
1844 /* monitor some parent directory for speedup hints */
1845 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
1846 {
1847 char path [4096];
1848 strcpy (path, w->path);
1849
1850 do
1851 {
1852 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
1853 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
1854
1855 char *pend = strrchr (path, '/');
1856
1857 if (!pend)
1858 break; /* whoops, no '/', complain to your admin */
1859
1860 *pend = 0;
1861 w->wd = inotify_add_watch (fs_fd, path, mask);
1862 }
1863 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
1864 }
1865 }
1866 else
1867 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
1868
1869 if (w->wd >= 0)
1870 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
1871}
1872
1873static void noinline
1874infy_del (EV_P_ ev_stat *w)
1875{
1876 int slot;
1877 int wd = w->wd;
1878
1879 if (wd < 0)
1880 return;
1881
1882 w->wd = -2;
1883 slot = wd & (EV_INOTIFY_HASHSIZE - 1);
1884 wlist_del (&fs_hash [slot].head, (WL)w);
1885
1886 /* remove this watcher, if others are watching it, they will rearm */
1887 inotify_rm_watch (fs_fd, wd);
1888}
1889
1890static void noinline
1891infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
1892{
1893 if (slot < 0)
1894 /* overflow, need to check for all hahs slots */
1895 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
1896 infy_wd (EV_A_ slot, wd, ev);
1897 else
1898 {
1899 WL w_;
1900
1901 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
1902 {
1903 ev_stat *w = (ev_stat *)w_;
1904 w_ = w_->next; /* lets us remove this watcher and all before it */
1905
1906 if (w->wd == wd || wd == -1)
1907 {
1908 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
1909 {
1910 w->wd = -1;
1911 infy_add (EV_A_ w); /* re-add, no matter what */
1912 }
1913
1914 stat_timer_cb (EV_A_ &w->timer, 0);
1915 }
1916 }
1917 }
1918}
1919
1920static void
1921infy_cb (EV_P_ ev_io *w, int revents)
1922{
1923 char buf [EV_INOTIFY_BUFSIZE];
1924 struct inotify_event *ev = (struct inotify_event *)buf;
1925 int ofs;
1926 int len = read (fs_fd, buf, sizeof (buf));
1927
1928 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
1929 infy_wd (EV_A_ ev->wd, ev->wd, ev);
1930}
1931
1932void inline_size
1933infy_init (EV_P)
1934{
1935 if (fs_fd != -2)
1936 return;
1937
1938 fs_fd = inotify_init ();
1939
1940 if (fs_fd >= 0)
1941 {
1942 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
1943 ev_set_priority (&fs_w, EV_MAXPRI);
1944 ev_io_start (EV_A_ &fs_w);
1945 }
1946}
1947
1948void inline_size
1949infy_fork (EV_P)
1950{
1951 int slot;
1952
1953 if (fs_fd < 0)
1954 return;
1955
1956 close (fs_fd);
1957 fs_fd = inotify_init ();
1958
1959 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
1960 {
1961 WL w_ = fs_hash [slot].head;
1962 fs_hash [slot].head = 0;
1963
1964 while (w_)
1965 {
1966 ev_stat *w = (ev_stat *)w_;
1967 w_ = w_->next; /* lets us add this watcher */
1968
1969 w->wd = -1;
1970
1971 if (fs_fd >= 0)
1972 infy_add (EV_A_ w); /* re-add, no matter what */
1973 else
1974 ev_timer_start (EV_A_ &w->timer);
1975 }
1976
1977 }
1978}
1979
1980#endif
1981
1982void
1983ev_stat_stat (EV_P_ ev_stat *w)
1984{
1985 if (lstat (w->path, &w->attr) < 0)
1986 w->attr.st_nlink = 0;
1987 else if (!w->attr.st_nlink)
1988 w->attr.st_nlink = 1;
1989}
1990
1991static void noinline
1992stat_timer_cb (EV_P_ ev_timer *w_, int revents)
1993{
1994 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
1995
1996 /* we copy this here each the time so that */
1997 /* prev has the old value when the callback gets invoked */
1998 w->prev = w->attr;
1999 ev_stat_stat (EV_A_ w);
2000
2001 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2002 if (
2003 w->prev.st_dev != w->attr.st_dev
2004 || w->prev.st_ino != w->attr.st_ino
2005 || w->prev.st_mode != w->attr.st_mode
2006 || w->prev.st_nlink != w->attr.st_nlink
2007 || w->prev.st_uid != w->attr.st_uid
2008 || w->prev.st_gid != w->attr.st_gid
2009 || w->prev.st_rdev != w->attr.st_rdev
2010 || w->prev.st_size != w->attr.st_size
2011 || w->prev.st_atime != w->attr.st_atime
2012 || w->prev.st_mtime != w->attr.st_mtime
2013 || w->prev.st_ctime != w->attr.st_ctime
2014 ) {
2015 #if EV_USE_INOTIFY
2016 infy_del (EV_A_ w);
2017 infy_add (EV_A_ w);
2018 ev_stat_stat (EV_A_ w); /* avoid race... */
2019 #endif
2020
2021 ev_feed_event (EV_A_ w, EV_STAT);
2022 }
2023}
2024
2025void
2026ev_stat_start (EV_P_ ev_stat *w)
2027{
2028 if (expect_false (ev_is_active (w)))
2029 return;
2030
2031 /* since we use memcmp, we need to clear any padding data etc. */
2032 memset (&w->prev, 0, sizeof (ev_statdata));
2033 memset (&w->attr, 0, sizeof (ev_statdata));
2034
2035 ev_stat_stat (EV_A_ w);
2036
2037 if (w->interval < MIN_STAT_INTERVAL)
2038 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2039
2040 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
2041 ev_set_priority (&w->timer, ev_priority (w));
2042
2043#if EV_USE_INOTIFY
2044 infy_init (EV_A);
2045
2046 if (fs_fd >= 0)
2047 infy_add (EV_A_ w);
2048 else
2049#endif
2050 ev_timer_start (EV_A_ &w->timer);
2051
2052 ev_start (EV_A_ (W)w, 1);
2053}
2054
2055void
2056ev_stat_stop (EV_P_ ev_stat *w)
2057{
2058 clear_pending (EV_A_ (W)w);
2059 if (expect_false (!ev_is_active (w)))
2060 return;
2061
2062#if EV_USE_INOTIFY
2063 infy_del (EV_A_ w);
2064#endif
2065 ev_timer_stop (EV_A_ &w->timer);
2066
2067 ev_stop (EV_A_ (W)w);
2068}
2069#endif
2070
2071#if EV_IDLE_ENABLE
2072void
2073ev_idle_start (EV_P_ ev_idle *w)
2074{
2075 if (expect_false (ev_is_active (w)))
2076 return;
2077
2078 pri_adjust (EV_A_ (W)w);
2079
2080 {
2081 int active = ++idlecnt [ABSPRI (w)];
2082
2083 ++idleall;
2084 ev_start (EV_A_ (W)w, active);
2085
2086 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2087 idles [ABSPRI (w)][active - 1] = w;
2088 }
2089}
2090
2091void
2092ev_idle_stop (EV_P_ ev_idle *w)
2093{
2094 clear_pending (EV_A_ (W)w);
2095 if (expect_false (!ev_is_active (w)))
2096 return;
2097
2098 {
2099 int active = ((W)w)->active;
2100
2101 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2102 ((W)idles [ABSPRI (w)][active - 1])->active = active;
2103
2104 ev_stop (EV_A_ (W)w);
2105 --idleall;
2106 }
2107}
2108#endif
2109
2110void
2111ev_prepare_start (EV_P_ ev_prepare *w)
2112{
2113 if (expect_false (ev_is_active (w)))
2114 return;
2115
2116 ev_start (EV_A_ (W)w, ++preparecnt);
2117 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2118 prepares [preparecnt - 1] = w;
2119}
2120
2121void
2122ev_prepare_stop (EV_P_ ev_prepare *w)
2123{
2124 clear_pending (EV_A_ (W)w);
2125 if (expect_false (!ev_is_active (w)))
2126 return;
2127
2128 {
2129 int active = ((W)w)->active;
2130 prepares [active - 1] = prepares [--preparecnt];
2131 ((W)prepares [active - 1])->active = active;
2132 }
2133
2134 ev_stop (EV_A_ (W)w);
2135}
2136
2137void
2138ev_check_start (EV_P_ ev_check *w)
2139{
2140 if (expect_false (ev_is_active (w)))
2141 return;
2142
2143 ev_start (EV_A_ (W)w, ++checkcnt);
2144 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2145 checks [checkcnt - 1] = w;
2146}
2147
2148void
2149ev_check_stop (EV_P_ ev_check *w)
2150{
2151 clear_pending (EV_A_ (W)w);
2152 if (expect_false (!ev_is_active (w)))
2153 return;
2154
2155 {
2156 int active = ((W)w)->active;
2157 checks [active - 1] = checks [--checkcnt];
2158 ((W)checks [active - 1])->active = active;
2159 }
2160
2161 ev_stop (EV_A_ (W)w);
2162}
2163
2164#if EV_EMBED_ENABLE
2165void noinline
2166ev_embed_sweep (EV_P_ ev_embed *w)
2167{
2168 ev_loop (w->loop, EVLOOP_NONBLOCK);
2169}
2170
2171static void
2172embed_cb (EV_P_ ev_io *io, int revents)
2173{
2174 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2175
2176 if (ev_cb (w))
2177 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2178 else
2179 ev_embed_sweep (loop, w);
2180}
2181
2182void
2183ev_embed_start (EV_P_ ev_embed *w)
2184{
2185 if (expect_false (ev_is_active (w)))
2186 return;
2187
2188 {
2189 struct ev_loop *loop = w->loop;
2190 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2191 ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
2192 }
2193
2194 ev_set_priority (&w->io, ev_priority (w));
2195 ev_io_start (EV_A_ &w->io);
2196
2197 ev_start (EV_A_ (W)w, 1);
2198}
2199
2200void
2201ev_embed_stop (EV_P_ ev_embed *w)
2202{
2203 clear_pending (EV_A_ (W)w);
2204 if (expect_false (!ev_is_active (w)))
2205 return;
2206
2207 ev_io_stop (EV_A_ &w->io);
2208
2209 ev_stop (EV_A_ (W)w);
2210}
2211#endif
2212
2213#if EV_FORK_ENABLE
2214void
2215ev_fork_start (EV_P_ ev_fork *w)
2216{
2217 if (expect_false (ev_is_active (w)))
2218 return;
2219
2220 ev_start (EV_A_ (W)w, ++forkcnt);
2221 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2222 forks [forkcnt - 1] = w;
2223}
2224
2225void
2226ev_fork_stop (EV_P_ ev_fork *w)
2227{
2228 clear_pending (EV_A_ (W)w);
2229 if (expect_false (!ev_is_active (w)))
2230 return;
2231
2232 {
2233 int active = ((W)w)->active;
2234 forks [active - 1] = forks [--forkcnt];
2235 ((W)forks [active - 1])->active = active;
2236 }
2237
2238 ev_stop (EV_A_ (W)w);
2239}
2240#endif
2241
1567/*****************************************************************************/ 2242/*****************************************************************************/
1568 2243
1569struct ev_once 2244struct ev_once
1570{ 2245{
1571 struct ev_io io; 2246 ev_io io;
1572 struct ev_timer to; 2247 ev_timer to;
1573 void (*cb)(int revents, void *arg); 2248 void (*cb)(int revents, void *arg);
1574 void *arg; 2249 void *arg;
1575}; 2250};
1576 2251
1577static void 2252static void
… …
1586 2261
1587 cb (revents, arg); 2262 cb (revents, arg);
1588} 2263}
1589 2264
1590static void 2265static void
1591once_cb_io (EV_P_ struct ev_io *w, int revents) 2266once_cb_io (EV_P_ ev_io *w, int revents)
1592{ 2267{
1593 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 2268 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1594} 2269}
1595 2270
1596static void 2271static void
1597once_cb_to (EV_P_ struct ev_timer *w, int revents) 2272once_cb_to (EV_P_ ev_timer *w, int revents)
1598{ 2273{
1599 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 2274 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1600} 2275}
1601 2276
1602void 2277void
1603ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 2278ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1604{ 2279{
1605 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 2280 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1606 2281
1607 if (!once) 2282 if (expect_false (!once))
2283 {
1608 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 2284 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1609 else 2285 return;
1610 { 2286 }
2287
1611 once->cb = cb; 2288 once->cb = cb;
1612 once->arg = arg; 2289 once->arg = arg;
1613 2290
1614 ev_init (&once->io, once_cb_io); 2291 ev_init (&once->io, once_cb_io);
1615 if (fd >= 0) 2292 if (fd >= 0)
1616 { 2293 {
1617 ev_io_set (&once->io, fd, events); 2294 ev_io_set (&once->io, fd, events);
1618 ev_io_start (EV_A_ &once->io); 2295 ev_io_start (EV_A_ &once->io);
1619 } 2296 }
1620 2297
1621 ev_init (&once->to, once_cb_to); 2298 ev_init (&once->to, once_cb_to);
1622 if (timeout >= 0.) 2299 if (timeout >= 0.)
1623 { 2300 {
1624 ev_timer_set (&once->to, timeout, 0.); 2301 ev_timer_set (&once->to, timeout, 0.);
1625 ev_timer_start (EV_A_ &once->to); 2302 ev_timer_start (EV_A_ &once->to);
1626 }
1627 } 2303 }
1628} 2304}
1629 2305
1630#ifdef __cplusplus 2306#ifdef __cplusplus
1631} 2307}

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