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Comparing libev/ev.c (file contents):
Revision 1.84 by root, Fri Nov 9 23:04:35 2007 UTC vs.
Revision 1.170 by root, Sat Dec 8 22:11:14 2007 UTC

… …
26 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
29 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 */ 30 */
31
32#ifdef __cplusplus
33extern "C" {
34#endif
35
31#ifndef EV_STANDALONE 36#ifndef EV_STANDALONE
37# ifdef EV_CONFIG_H
38# include EV_CONFIG_H
39# else
32# include "config.h" 40# include "config.h"
41# endif
33 42
34# if HAVE_CLOCK_GETTIME 43# if HAVE_CLOCK_GETTIME
44# ifndef EV_USE_MONOTONIC
35# define EV_USE_MONOTONIC 1 45# define EV_USE_MONOTONIC 1
46# endif
47# ifndef EV_USE_REALTIME
36# define EV_USE_REALTIME 1 48# define EV_USE_REALTIME 1
49# endif
50# else
51# ifndef EV_USE_MONOTONIC
52# define EV_USE_MONOTONIC 0
53# endif
54# ifndef EV_USE_REALTIME
55# define EV_USE_REALTIME 0
56# endif
37# endif 57# endif
38 58
59# ifndef EV_USE_SELECT
39# if HAVE_SELECT && HAVE_SYS_SELECT_H 60# if HAVE_SELECT && HAVE_SYS_SELECT_H
40# define EV_USE_SELECT 1 61# define EV_USE_SELECT 1
62# else
63# define EV_USE_SELECT 0
64# endif
41# endif 65# endif
42 66
67# ifndef EV_USE_POLL
43# if HAVE_POLL && HAVE_POLL_H 68# if HAVE_POLL && HAVE_POLL_H
44# define EV_USE_POLL 1 69# define EV_USE_POLL 1
70# else
71# define EV_USE_POLL 0
72# endif
45# endif 73# endif
46 74
75# ifndef EV_USE_EPOLL
47# if HAVE_EPOLL && HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H 76# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
48# define EV_USE_EPOLL 1 77# define EV_USE_EPOLL 1
78# else
79# define EV_USE_EPOLL 0
80# endif
49# endif 81# endif
50 82
83# ifndef EV_USE_KQUEUE
51# if HAVE_KQUEUE && HAVE_WORKING_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H 84# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H
52# define EV_USE_KQUEUE 1 85# define EV_USE_KQUEUE 1
86# else
87# define EV_USE_KQUEUE 0
88# endif
89# endif
90
91# ifndef EV_USE_PORT
92# if HAVE_PORT_H && HAVE_PORT_CREATE
93# define EV_USE_PORT 1
94# else
95# define EV_USE_PORT 0
96# endif
97# endif
98
99# ifndef EV_USE_INOTIFY
100# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
101# define EV_USE_INOTIFY 1
102# else
103# define EV_USE_INOTIFY 0
104# endif
53# endif 105# endif
54 106
55#endif 107#endif
56 108
57#include <math.h> 109#include <math.h>
… …
66#include <sys/types.h> 118#include <sys/types.h>
67#include <time.h> 119#include <time.h>
68 120
69#include <signal.h> 121#include <signal.h>
70 122
71#ifndef WIN32
72# include <unistd.h>
73# include <sys/time.h>
74# include <sys/wait.h>
75#endif
76/**/
77
78#ifndef EV_USE_MONOTONIC
79# define EV_USE_MONOTONIC 1
80#endif
81
82#ifndef EV_USE_SELECT
83# define EV_USE_SELECT 1
84#endif
85
86#ifndef EV_USE_POLL
87# define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */
88#endif
89
90#ifndef EV_USE_EPOLL
91# define EV_USE_EPOLL 0
92#endif
93
94#ifndef EV_USE_KQUEUE
95# define EV_USE_KQUEUE 0
96#endif
97
98#ifndef EV_USE_WIN32
99# ifdef WIN32
100# define EV_USE_WIN32 0 /* it does not exist, use select */
101# undef EV_USE_SELECT
102# define EV_USE_SELECT 1
103# else
104# define EV_USE_WIN32 0
105# endif
106#endif
107
108#ifndef EV_USE_REALTIME
109# define EV_USE_REALTIME 1
110#endif
111
112/**/
113
114#ifndef CLOCK_MONOTONIC
115# undef EV_USE_MONOTONIC
116# define EV_USE_MONOTONIC 0
117#endif
118
119#ifndef CLOCK_REALTIME
120# undef EV_USE_REALTIME
121# define EV_USE_REALTIME 0
122#endif
123
124/**/
125
126#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
127#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */
128#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
129/*#define CLEANUP_INTERVAL 300. /* how often to try to free memory and re-check fds */
130
131#ifdef EV_H 123#ifdef EV_H
132# include EV_H 124# include EV_H
133#else 125#else
134# include "ev.h" 126# include "ev.h"
135#endif 127#endif
136 128
129#ifndef _WIN32
130# include <sys/time.h>
131# include <sys/wait.h>
132# include <unistd.h>
133#else
134# define WIN32_LEAN_AND_MEAN
135# include <windows.h>
136# ifndef EV_SELECT_IS_WINSOCKET
137# define EV_SELECT_IS_WINSOCKET 1
138# endif
139#endif
140
141/**/
142
143#ifndef EV_USE_MONOTONIC
144# define EV_USE_MONOTONIC 0
145#endif
146
147#ifndef EV_USE_REALTIME
148# define EV_USE_REALTIME 0
149#endif
150
151#ifndef EV_USE_SELECT
152# define EV_USE_SELECT 1
153#endif
154
155#ifndef EV_USE_POLL
156# ifdef _WIN32
157# define EV_USE_POLL 0
158# else
159# define EV_USE_POLL 1
160# endif
161#endif
162
163#ifndef EV_USE_EPOLL
164# define EV_USE_EPOLL 0
165#endif
166
167#ifndef EV_USE_KQUEUE
168# define EV_USE_KQUEUE 0
169#endif
170
171#ifndef EV_USE_PORT
172# define EV_USE_PORT 0
173#endif
174
175#ifndef EV_USE_INOTIFY
176# define EV_USE_INOTIFY 0
177#endif
178
179#ifndef EV_PID_HASHSIZE
180# if EV_MINIMAL
181# define EV_PID_HASHSIZE 1
182# else
183# define EV_PID_HASHSIZE 16
184# endif
185#endif
186
187#ifndef EV_INOTIFY_HASHSIZE
188# if EV_MINIMAL
189# define EV_INOTIFY_HASHSIZE 1
190# else
191# define EV_INOTIFY_HASHSIZE 16
192# endif
193#endif
194
195/**/
196
197#ifndef CLOCK_MONOTONIC
198# undef EV_USE_MONOTONIC
199# define EV_USE_MONOTONIC 0
200#endif
201
202#ifndef CLOCK_REALTIME
203# undef EV_USE_REALTIME
204# define EV_USE_REALTIME 0
205#endif
206
207#if EV_SELECT_IS_WINSOCKET
208# include <winsock.h>
209#endif
210
211#if !EV_STAT_ENABLE
212# define EV_USE_INOTIFY 0
213#endif
214
215#if EV_USE_INOTIFY
216# include <sys/inotify.h>
217#endif
218
219/**/
220
221#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
222#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
223/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds */
224
137#if __GNUC__ >= 3 225#if __GNUC__ >= 3
138# define expect(expr,value) __builtin_expect ((expr),(value)) 226# define expect(expr,value) __builtin_expect ((expr),(value))
139# define inline inline 227# define noinline __attribute__ ((noinline))
140#else 228#else
141# define expect(expr,value) (expr) 229# define expect(expr,value) (expr)
142# define inline static 230# define noinline
231# if __STDC_VERSION__ < 199901L
232# define inline
233# endif
143#endif 234#endif
144 235
145#define expect_false(expr) expect ((expr) != 0, 0) 236#define expect_false(expr) expect ((expr) != 0, 0)
146#define expect_true(expr) expect ((expr) != 0, 1) 237#define expect_true(expr) expect ((expr) != 0, 1)
238#define inline_size static inline
239
240#if EV_MINIMAL
241# define inline_speed static noinline
242#else
243# define inline_speed static inline
244#endif
147 245
148#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 246#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
149#define ABSPRI(w) ((w)->priority - EV_MINPRI) 247#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
150 248
249#define EMPTY /* required for microsofts broken pseudo-c compiler */
250#define EMPTY2(a,b) /* used to suppress some warnings */
251
151typedef struct ev_watcher *W; 252typedef ev_watcher *W;
152typedef struct ev_watcher_list *WL; 253typedef ev_watcher_list *WL;
153typedef struct ev_watcher_time *WT; 254typedef ev_watcher_time *WT;
154 255
155static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 256static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
156 257
258#ifdef _WIN32
157#include "ev_win32.c" 259# include "ev_win32.c"
260#endif
158 261
159/*****************************************************************************/ 262/*****************************************************************************/
160 263
161static void (*syserr_cb)(const char *msg); 264static void (*syserr_cb)(const char *msg);
162 265
266void
163void ev_set_syserr_cb (void (*cb)(const char *msg)) 267ev_set_syserr_cb (void (*cb)(const char *msg))
164{ 268{
165 syserr_cb = cb; 269 syserr_cb = cb;
166} 270}
167 271
168static void 272static void noinline
169syserr (const char *msg) 273syserr (const char *msg)
170{ 274{
171 if (!msg) 275 if (!msg)
172 msg = "(libev) system error"; 276 msg = "(libev) system error";
173 277
… …
180 } 284 }
181} 285}
182 286
183static void *(*alloc)(void *ptr, long size); 287static void *(*alloc)(void *ptr, long size);
184 288
289void
185void ev_set_allocator (void *(*cb)(void *ptr, long size)) 290ev_set_allocator (void *(*cb)(void *ptr, long size))
186{ 291{
187 alloc = cb; 292 alloc = cb;
188} 293}
189 294
190static void * 295inline_speed void *
191ev_realloc (void *ptr, long size) 296ev_realloc (void *ptr, long size)
192{ 297{
193 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size); 298 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
194 299
195 if (!ptr && size) 300 if (!ptr && size)
… …
209typedef struct 314typedef struct
210{ 315{
211 WL head; 316 WL head;
212 unsigned char events; 317 unsigned char events;
213 unsigned char reify; 318 unsigned char reify;
319#if EV_SELECT_IS_WINSOCKET
320 SOCKET handle;
321#endif
214} ANFD; 322} ANFD;
215 323
216typedef struct 324typedef struct
217{ 325{
218 W w; 326 W w;
219 int events; 327 int events;
220} ANPENDING; 328} ANPENDING;
221 329
330#if EV_USE_INOTIFY
331typedef struct
332{
333 WL head;
334} ANFS;
335#endif
336
222#if EV_MULTIPLICITY 337#if EV_MULTIPLICITY
223 338
224 struct ev_loop 339 struct ev_loop
225 { 340 {
341 ev_tstamp ev_rt_now;
342 #define ev_rt_now ((loop)->ev_rt_now)
226 #define VAR(name,decl) decl; 343 #define VAR(name,decl) decl;
227 #include "ev_vars.h" 344 #include "ev_vars.h"
228 #undef VAR 345 #undef VAR
229 }; 346 };
230 #include "ev_wrap.h" 347 #include "ev_wrap.h"
231 348
232 struct ev_loop default_loop_struct; 349 static struct ev_loop default_loop_struct;
233 static struct ev_loop *default_loop; 350 struct ev_loop *ev_default_loop_ptr;
234 351
235#else 352#else
236 353
354 ev_tstamp ev_rt_now;
237 #define VAR(name,decl) static decl; 355 #define VAR(name,decl) static decl;
238 #include "ev_vars.h" 356 #include "ev_vars.h"
239 #undef VAR 357 #undef VAR
240 358
241 static int default_loop; 359 static int ev_default_loop_ptr;
242 360
243#endif 361#endif
244 362
245/*****************************************************************************/ 363/*****************************************************************************/
246 364
247inline ev_tstamp 365ev_tstamp
248ev_time (void) 366ev_time (void)
249{ 367{
250#if EV_USE_REALTIME 368#if EV_USE_REALTIME
251 struct timespec ts; 369 struct timespec ts;
252 clock_gettime (CLOCK_REALTIME, &ts); 370 clock_gettime (CLOCK_REALTIME, &ts);
… …
256 gettimeofday (&tv, 0); 374 gettimeofday (&tv, 0);
257 return tv.tv_sec + tv.tv_usec * 1e-6; 375 return tv.tv_sec + tv.tv_usec * 1e-6;
258#endif 376#endif
259} 377}
260 378
261inline ev_tstamp 379ev_tstamp inline_size
262get_clock (void) 380get_clock (void)
263{ 381{
264#if EV_USE_MONOTONIC 382#if EV_USE_MONOTONIC
265 if (expect_true (have_monotonic)) 383 if (expect_true (have_monotonic))
266 { 384 {
… …
271#endif 389#endif
272 390
273 return ev_time (); 391 return ev_time ();
274} 392}
275 393
394#if EV_MULTIPLICITY
276ev_tstamp 395ev_tstamp
277ev_now (EV_P) 396ev_now (EV_P)
278{ 397{
279 return rt_now; 398 return ev_rt_now;
280} 399}
400#endif
281 401
282#define array_roundsize(type,n) ((n) | 4 & ~3) 402int inline_size
403array_nextsize (int elem, int cur, int cnt)
404{
405 int ncur = cur + 1;
406
407 do
408 ncur <<= 1;
409 while (cnt > ncur);
410
411 /* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */
412 if (elem * ncur > 4096)
413 {
414 ncur *= elem;
415 ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095;
416 ncur = ncur - sizeof (void *) * 4;
417 ncur /= elem;
418 }
419
420 return ncur;
421}
422
423inline_speed void *
424array_realloc (int elem, void *base, int *cur, int cnt)
425{
426 *cur = array_nextsize (elem, *cur, cnt);
427 return ev_realloc (base, elem * *cur);
428}
283 429
284#define array_needsize(type,base,cur,cnt,init) \ 430#define array_needsize(type,base,cur,cnt,init) \
285 if (expect_false ((cnt) > cur)) \ 431 if (expect_false ((cnt) > (cur))) \
286 { \ 432 { \
287 int newcnt = cur; \ 433 int ocur_ = (cur); \
288 do \ 434 (base) = (type *)array_realloc \
289 { \ 435 (sizeof (type), (base), &(cur), (cnt)); \
290 newcnt = array_roundsize (type, newcnt << 1); \ 436 init ((base) + (ocur_), (cur) - ocur_); \
291 } \
292 while ((cnt) > newcnt); \
293 \
294 base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\
295 init (base + cur, newcnt - cur); \
296 cur = newcnt; \
297 } 437 }
298 438
439#if 0
299#define array_slim(type,stem) \ 440#define array_slim(type,stem) \
300 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 441 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
301 { \ 442 { \
302 stem ## max = array_roundsize (stem ## cnt >> 1); \ 443 stem ## max = array_roundsize (stem ## cnt >> 1); \
303 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\ 444 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
304 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 445 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
305 } 446 }
306 447#endif
307/* microsoft's pseudo-c is quite far from C as the rest of the world and the standard knows it */
308/* bringing us everlasting joy in form of stupid extra macros that are not required in C */
309#define array_free_microshit(stem) \
310 ev_free (stem ## s); stem ## cnt = stem ## max = 0;
311 448
312#define array_free(stem, idx) \ 449#define array_free(stem, idx) \
313 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 450 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
314 451
315/*****************************************************************************/ 452/*****************************************************************************/
316 453
317static void 454void noinline
455ev_feed_event (EV_P_ void *w, int revents)
456{
457 W w_ = (W)w;
458
459 if (expect_false (w_->pending))
460 {
461 pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
462 return;
463 }
464
465 w_->pending = ++pendingcnt [ABSPRI (w_)];
466 array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
467 pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
468 pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
469}
470
471void inline_size
472queue_events (EV_P_ W *events, int eventcnt, int type)
473{
474 int i;
475
476 for (i = 0; i < eventcnt; ++i)
477 ev_feed_event (EV_A_ events [i], type);
478}
479
480/*****************************************************************************/
481
482void inline_size
318anfds_init (ANFD *base, int count) 483anfds_init (ANFD *base, int count)
319{ 484{
320 while (count--) 485 while (count--)
321 { 486 {
322 base->head = 0; 487 base->head = 0;
… …
325 490
326 ++base; 491 ++base;
327 } 492 }
328} 493}
329 494
330void 495void inline_speed
331ev_feed_event (EV_P_ void *w, int revents)
332{
333 W w_ = (W)w;
334
335 if (w_->pending)
336 {
337 pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
338 return;
339 }
340
341 w_->pending = ++pendingcnt [ABSPRI (w_)];
342 array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], (void));
343 pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
344 pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
345}
346
347static void
348queue_events (EV_P_ W *events, int eventcnt, int type)
349{
350 int i;
351
352 for (i = 0; i < eventcnt; ++i)
353 ev_feed_event (EV_A_ events [i], type);
354}
355
356inline void
357fd_event (EV_P_ int fd, int revents) 496fd_event (EV_P_ int fd, int revents)
358{ 497{
359 ANFD *anfd = anfds + fd; 498 ANFD *anfd = anfds + fd;
360 struct ev_io *w; 499 ev_io *w;
361 500
362 for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) 501 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
363 { 502 {
364 int ev = w->events & revents; 503 int ev = w->events & revents;
365 504
366 if (ev) 505 if (ev)
367 ev_feed_event (EV_A_ (W)w, ev); 506 ev_feed_event (EV_A_ (W)w, ev);
… …
369} 508}
370 509
371void 510void
372ev_feed_fd_event (EV_P_ int fd, int revents) 511ev_feed_fd_event (EV_P_ int fd, int revents)
373{ 512{
513 if (fd >= 0 && fd < anfdmax)
374 fd_event (EV_A_ fd, revents); 514 fd_event (EV_A_ fd, revents);
375} 515}
376 516
377/*****************************************************************************/ 517void inline_size
378
379static void
380fd_reify (EV_P) 518fd_reify (EV_P)
381{ 519{
382 int i; 520 int i;
383 521
384 for (i = 0; i < fdchangecnt; ++i) 522 for (i = 0; i < fdchangecnt; ++i)
385 { 523 {
386 int fd = fdchanges [i]; 524 int fd = fdchanges [i];
387 ANFD *anfd = anfds + fd; 525 ANFD *anfd = anfds + fd;
388 struct ev_io *w; 526 ev_io *w;
389 527
390 int events = 0; 528 int events = 0;
391 529
392 for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) 530 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
393 events |= w->events; 531 events |= w->events;
394 532
533#if EV_SELECT_IS_WINSOCKET
534 if (events)
535 {
536 unsigned long argp;
537 anfd->handle = _get_osfhandle (fd);
538 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
539 }
540#endif
541
395 anfd->reify = 0; 542 anfd->reify = 0;
396 543
397 method_modify (EV_A_ fd, anfd->events, events); 544 backend_modify (EV_A_ fd, anfd->events, events);
398 anfd->events = events; 545 anfd->events = events;
399 } 546 }
400 547
401 fdchangecnt = 0; 548 fdchangecnt = 0;
402} 549}
403 550
404static void 551void inline_size
405fd_change (EV_P_ int fd) 552fd_change (EV_P_ int fd)
406{ 553{
407 if (anfds [fd].reify) 554 if (expect_false (anfds [fd].reify))
408 return; 555 return;
409 556
410 anfds [fd].reify = 1; 557 anfds [fd].reify = 1;
411 558
412 ++fdchangecnt; 559 ++fdchangecnt;
413 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void)); 560 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
414 fdchanges [fdchangecnt - 1] = fd; 561 fdchanges [fdchangecnt - 1] = fd;
415} 562}
416 563
417static void 564void inline_speed
418fd_kill (EV_P_ int fd) 565fd_kill (EV_P_ int fd)
419{ 566{
420 struct ev_io *w; 567 ev_io *w;
421 568
422 while ((w = (struct ev_io *)anfds [fd].head)) 569 while ((w = (ev_io *)anfds [fd].head))
423 { 570 {
424 ev_io_stop (EV_A_ w); 571 ev_io_stop (EV_A_ w);
425 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 572 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
426 } 573 }
427} 574}
428 575
429static int 576int inline_size
430fd_valid (int fd) 577fd_valid (int fd)
431{ 578{
432#ifdef WIN32 579#ifdef _WIN32
433 return !!win32_get_osfhandle (fd); 580 return _get_osfhandle (fd) != -1;
434#else 581#else
435 return fcntl (fd, F_GETFD) != -1; 582 return fcntl (fd, F_GETFD) != -1;
436#endif 583#endif
437} 584}
438 585
439/* called on EBADF to verify fds */ 586/* called on EBADF to verify fds */
440static void 587static void noinline
441fd_ebadf (EV_P) 588fd_ebadf (EV_P)
442{ 589{
443 int fd; 590 int fd;
444 591
445 for (fd = 0; fd < anfdmax; ++fd) 592 for (fd = 0; fd < anfdmax; ++fd)
… …
447 if (!fd_valid (fd) == -1 && errno == EBADF) 594 if (!fd_valid (fd) == -1 && errno == EBADF)
448 fd_kill (EV_A_ fd); 595 fd_kill (EV_A_ fd);
449} 596}
450 597
451/* called on ENOMEM in select/poll to kill some fds and retry */ 598/* called on ENOMEM in select/poll to kill some fds and retry */
452static void 599static void noinline
453fd_enomem (EV_P) 600fd_enomem (EV_P)
454{ 601{
455 int fd; 602 int fd;
456 603
457 for (fd = anfdmax; fd--; ) 604 for (fd = anfdmax; fd--; )
… …
460 fd_kill (EV_A_ fd); 607 fd_kill (EV_A_ fd);
461 return; 608 return;
462 } 609 }
463} 610}
464 611
465/* usually called after fork if method needs to re-arm all fds from scratch */ 612/* usually called after fork if backend needs to re-arm all fds from scratch */
466static void 613static void noinline
467fd_rearm_all (EV_P) 614fd_rearm_all (EV_P)
468{ 615{
469 int fd; 616 int fd;
470 617
471 /* this should be highly optimised to not do anything but set a flag */
472 for (fd = 0; fd < anfdmax; ++fd) 618 for (fd = 0; fd < anfdmax; ++fd)
473 if (anfds [fd].events) 619 if (anfds [fd].events)
474 { 620 {
475 anfds [fd].events = 0; 621 anfds [fd].events = 0;
476 fd_change (EV_A_ fd); 622 fd_change (EV_A_ fd);
477 } 623 }
478} 624}
479 625
480/*****************************************************************************/ 626/*****************************************************************************/
481 627
482static void 628void inline_speed
483upheap (WT *heap, int k) 629upheap (WT *heap, int k)
484{ 630{
485 WT w = heap [k]; 631 WT w = heap [k];
486 632
487 while (k && heap [k >> 1]->at > w->at) 633 while (k && heap [k >> 1]->at > w->at)
… …
494 heap [k] = w; 640 heap [k] = w;
495 ((W)heap [k])->active = k + 1; 641 ((W)heap [k])->active = k + 1;
496 642
497} 643}
498 644
499static void 645void inline_speed
500downheap (WT *heap, int N, int k) 646downheap (WT *heap, int N, int k)
501{ 647{
502 WT w = heap [k]; 648 WT w = heap [k];
503 649
504 while (k < (N >> 1)) 650 while (k < (N >> 1))
… …
518 664
519 heap [k] = w; 665 heap [k] = w;
520 ((W)heap [k])->active = k + 1; 666 ((W)heap [k])->active = k + 1;
521} 667}
522 668
523inline void 669void inline_size
524adjustheap (WT *heap, int N, int k, ev_tstamp at) 670adjustheap (WT *heap, int N, int k)
525{ 671{
526 ev_tstamp old_at = heap [k]->at; 672 upheap (heap, k);
527 heap [k]->at = at;
528
529 if (old_at < at)
530 downheap (heap, N, k); 673 downheap (heap, N, k);
531 else
532 upheap (heap, k);
533} 674}
534 675
535/*****************************************************************************/ 676/*****************************************************************************/
536 677
537typedef struct 678typedef struct
… …
543static ANSIG *signals; 684static ANSIG *signals;
544static int signalmax; 685static int signalmax;
545 686
546static int sigpipe [2]; 687static int sigpipe [2];
547static sig_atomic_t volatile gotsig; 688static sig_atomic_t volatile gotsig;
548static struct ev_io sigev; 689static ev_io sigev;
549 690
550static void 691void inline_size
551signals_init (ANSIG *base, int count) 692signals_init (ANSIG *base, int count)
552{ 693{
553 while (count--) 694 while (count--)
554 { 695 {
555 base->head = 0; 696 base->head = 0;
… …
560} 701}
561 702
562static void 703static void
563sighandler (int signum) 704sighandler (int signum)
564{ 705{
565#if WIN32 706#if _WIN32
566 signal (signum, sighandler); 707 signal (signum, sighandler);
567#endif 708#endif
568 709
569 signals [signum - 1].gotsig = 1; 710 signals [signum - 1].gotsig = 1;
570 711
571 if (!gotsig) 712 if (!gotsig)
572 { 713 {
573 int old_errno = errno; 714 int old_errno = errno;
574 gotsig = 1; 715 gotsig = 1;
575#ifdef WIN32
576 send (sigpipe [1], &signum, 1, MSG_DONTWAIT);
577#else
578 write (sigpipe [1], &signum, 1); 716 write (sigpipe [1], &signum, 1);
579#endif
580 errno = old_errno; 717 errno = old_errno;
581 } 718 }
582} 719}
583 720
584void 721void noinline
585ev_feed_signal_event (EV_P_ int signum) 722ev_feed_signal_event (EV_P_ int signum)
586{ 723{
587 WL w; 724 WL w;
588 725
589#if EV_MULTIPLICITY 726#if EV_MULTIPLICITY
590 assert (("feeding signal events is only supported in the default loop", loop == default_loop)); 727 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
591#endif 728#endif
592 729
593 --signum; 730 --signum;
594 731
595 if (signum < 0 || signum >= signalmax) 732 if (signum < 0 || signum >= signalmax)
… …
600 for (w = signals [signum].head; w; w = w->next) 737 for (w = signals [signum].head; w; w = w->next)
601 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 738 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
602} 739}
603 740
604static void 741static void
605sigcb (EV_P_ struct ev_io *iow, int revents) 742sigcb (EV_P_ ev_io *iow, int revents)
606{ 743{
607 int signum; 744 int signum;
608 745
609#ifdef WIN32
610 recv (sigpipe [0], &revents, 1, MSG_DONTWAIT);
611#else
612 read (sigpipe [0], &revents, 1); 746 read (sigpipe [0], &revents, 1);
613#endif
614 gotsig = 0; 747 gotsig = 0;
615 748
616 for (signum = signalmax; signum--; ) 749 for (signum = signalmax; signum--; )
617 if (signals [signum].gotsig) 750 if (signals [signum].gotsig)
618 ev_feed_signal_event (EV_A_ signum + 1); 751 ev_feed_signal_event (EV_A_ signum + 1);
619} 752}
620 753
621static void 754void inline_size
755fd_intern (int fd)
756{
757#ifdef _WIN32
758 int arg = 1;
759 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
760#else
761 fcntl (fd, F_SETFD, FD_CLOEXEC);
762 fcntl (fd, F_SETFL, O_NONBLOCK);
763#endif
764}
765
766static void noinline
622siginit (EV_P) 767siginit (EV_P)
623{ 768{
624#ifndef WIN32 769 fd_intern (sigpipe [0]);
625 fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC); 770 fd_intern (sigpipe [1]);
626 fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
627
628 /* rather than sort out wether we really need nb, set it */
629 fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
630 fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
631#endif
632 771
633 ev_io_set (&sigev, sigpipe [0], EV_READ); 772 ev_io_set (&sigev, sigpipe [0], EV_READ);
634 ev_io_start (EV_A_ &sigev); 773 ev_io_start (EV_A_ &sigev);
635 ev_unref (EV_A); /* child watcher should not keep loop alive */ 774 ev_unref (EV_A); /* child watcher should not keep loop alive */
636} 775}
637 776
638/*****************************************************************************/ 777/*****************************************************************************/
639 778
640static struct ev_child *childs [PID_HASHSIZE]; 779static ev_child *childs [EV_PID_HASHSIZE];
641 780
642#ifndef WIN32 781#ifndef _WIN32
643 782
644static struct ev_signal childev; 783static ev_signal childev;
784
785void inline_speed
786child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
787{
788 ev_child *w;
789
790 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
791 if (w->pid == pid || !w->pid)
792 {
793 ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */
794 w->rpid = pid;
795 w->rstatus = status;
796 ev_feed_event (EV_A_ (W)w, EV_CHILD);
797 }
798}
645 799
646#ifndef WCONTINUED 800#ifndef WCONTINUED
647# define WCONTINUED 0 801# define WCONTINUED 0
648#endif 802#endif
649 803
650static void 804static void
651child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
652{
653 struct ev_child *w;
654
655 for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
656 if (w->pid == pid || !w->pid)
657 {
658 ev_priority (w) = ev_priority (sw); /* need to do it *now* */
659 w->rpid = pid;
660 w->rstatus = status;
661 ev_feed_event (EV_A_ (W)w, EV_CHILD);
662 }
663}
664
665static void
666childcb (EV_P_ struct ev_signal *sw, int revents) 805childcb (EV_P_ ev_signal *sw, int revents)
667{ 806{
668 int pid, status; 807 int pid, status;
669 808
809 /* some systems define WCONTINUED but then fail to support it (linux 2.4) */
670 if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) 810 if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
671 { 811 if (!WCONTINUED
812 || errno != EINVAL
813 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
814 return;
815
672 /* make sure we are called again until all childs have been reaped */ 816 /* make sure we are called again until all childs have been reaped */
817 /* we need to do it this way so that the callback gets called before we continue */
673 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 818 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
674 819
675 child_reap (EV_A_ sw, pid, pid, status); 820 child_reap (EV_A_ sw, pid, pid, status);
821 if (EV_PID_HASHSIZE > 1)
676 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */ 822 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
677 }
678} 823}
679 824
680#endif 825#endif
681 826
682/*****************************************************************************/ 827/*****************************************************************************/
683 828
829#if EV_USE_PORT
830# include "ev_port.c"
831#endif
684#if EV_USE_KQUEUE 832#if EV_USE_KQUEUE
685# include "ev_kqueue.c" 833# include "ev_kqueue.c"
686#endif 834#endif
687#if EV_USE_EPOLL 835#if EV_USE_EPOLL
688# include "ev_epoll.c" 836# include "ev_epoll.c"
… …
705{ 853{
706 return EV_VERSION_MINOR; 854 return EV_VERSION_MINOR;
707} 855}
708 856
709/* return true if we are running with elevated privileges and should ignore env variables */ 857/* return true if we are running with elevated privileges and should ignore env variables */
710static int 858int inline_size
711enable_secure (void) 859enable_secure (void)
712{ 860{
713#ifdef WIN32 861#ifdef _WIN32
714 return 0; 862 return 0;
715#else 863#else
716 return getuid () != geteuid () 864 return getuid () != geteuid ()
717 || getgid () != getegid (); 865 || getgid () != getegid ();
718#endif 866#endif
719} 867}
720 868
721int 869unsigned int
722ev_method (EV_P) 870ev_supported_backends (void)
723{ 871{
724 return method; 872 unsigned int flags = 0;
725}
726 873
727static void 874 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
728loop_init (EV_P_ int methods) 875 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
876 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
877 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
878 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
879
880 return flags;
881}
882
883unsigned int
884ev_recommended_backends (void)
729{ 885{
730 if (!method) 886 unsigned int flags = ev_supported_backends ();
887
888#ifndef __NetBSD__
889 /* kqueue is borked on everything but netbsd apparently */
890 /* it usually doesn't work correctly on anything but sockets and pipes */
891 flags &= ~EVBACKEND_KQUEUE;
892#endif
893#ifdef __APPLE__
894 // flags &= ~EVBACKEND_KQUEUE; for documentation
895 flags &= ~EVBACKEND_POLL;
896#endif
897
898 return flags;
899}
900
901unsigned int
902ev_embeddable_backends (void)
903{
904 return EVBACKEND_EPOLL
905 | EVBACKEND_KQUEUE
906 | EVBACKEND_PORT;
907}
908
909unsigned int
910ev_backend (EV_P)
911{
912 return backend;
913}
914
915unsigned int
916ev_loop_count (EV_P)
917{
918 return loop_count;
919}
920
921static void noinline
922loop_init (EV_P_ unsigned int flags)
923{
924 if (!backend)
731 { 925 {
732#if EV_USE_MONOTONIC 926#if EV_USE_MONOTONIC
733 { 927 {
734 struct timespec ts; 928 struct timespec ts;
735 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 929 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
736 have_monotonic = 1; 930 have_monotonic = 1;
737 } 931 }
738#endif 932#endif
739 933
740 rt_now = ev_time (); 934 ev_rt_now = ev_time ();
741 mn_now = get_clock (); 935 mn_now = get_clock ();
742 now_floor = mn_now; 936 now_floor = mn_now;
743 rtmn_diff = rt_now - mn_now; 937 rtmn_diff = ev_rt_now - mn_now;
744 938
745 if (methods == EVMETHOD_AUTO) 939 /* pid check not overridable via env */
746 if (!enable_secure () && getenv ("LIBEV_METHODS")) 940#ifndef _WIN32
941 if (flags & EVFLAG_FORKCHECK)
942 curpid = getpid ();
943#endif
944
945 if (!(flags & EVFLAG_NOENV)
946 && !enable_secure ()
947 && getenv ("LIBEV_FLAGS"))
747 methods = atoi (getenv ("LIBEV_METHODS")); 948 flags = atoi (getenv ("LIBEV_FLAGS"));
748 else
749 methods = EVMETHOD_ANY;
750 949
751 method = 0; 950 if (!(flags & 0x0000ffffUL))
951 flags |= ev_recommended_backends ();
952
953 backend = 0;
954 backend_fd = -1;
752#if EV_USE_WIN32 955#if EV_USE_INOTIFY
753 if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods); 956 fs_fd = -2;
957#endif
958
959#if EV_USE_PORT
960 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
754#endif 961#endif
755#if EV_USE_KQUEUE 962#if EV_USE_KQUEUE
756 if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods); 963 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
757#endif 964#endif
758#if EV_USE_EPOLL 965#if EV_USE_EPOLL
759 if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods); 966 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
760#endif 967#endif
761#if EV_USE_POLL 968#if EV_USE_POLL
762 if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods); 969 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
763#endif 970#endif
764#if EV_USE_SELECT 971#if EV_USE_SELECT
765 if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods); 972 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
766#endif 973#endif
767 974
768 ev_init (&sigev, sigcb); 975 ev_init (&sigev, sigcb);
769 ev_set_priority (&sigev, EV_MAXPRI); 976 ev_set_priority (&sigev, EV_MAXPRI);
770 } 977 }
771} 978}
772 979
773void 980static void noinline
774loop_destroy (EV_P) 981loop_destroy (EV_P)
775{ 982{
776 int i; 983 int i;
777 984
778#if EV_USE_WIN32 985#if EV_USE_INOTIFY
779 if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A); 986 if (fs_fd >= 0)
987 close (fs_fd);
988#endif
989
990 if (backend_fd >= 0)
991 close (backend_fd);
992
993#if EV_USE_PORT
994 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
780#endif 995#endif
781#if EV_USE_KQUEUE 996#if EV_USE_KQUEUE
782 if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A); 997 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
783#endif 998#endif
784#if EV_USE_EPOLL 999#if EV_USE_EPOLL
785 if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A); 1000 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
786#endif 1001#endif
787#if EV_USE_POLL 1002#if EV_USE_POLL
788 if (method == EVMETHOD_POLL ) poll_destroy (EV_A); 1003 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
789#endif 1004#endif
790#if EV_USE_SELECT 1005#if EV_USE_SELECT
791 if (method == EVMETHOD_SELECT) select_destroy (EV_A); 1006 if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
792#endif 1007#endif
793 1008
794 for (i = NUMPRI; i--; ) 1009 for (i = NUMPRI; i--; )
1010 {
795 array_free (pending, [i]); 1011 array_free (pending, [i]);
1012#if EV_IDLE_ENABLE
1013 array_free (idle, [i]);
1014#endif
1015 }
796 1016
797 /* have to use the microsoft-never-gets-it-right macro */ 1017 /* have to use the microsoft-never-gets-it-right macro */
798 array_free_microshit (fdchange); 1018 array_free (fdchange, EMPTY);
799 array_free_microshit (timer); 1019 array_free (timer, EMPTY);
800 array_free_microshit (periodic); 1020#if EV_PERIODIC_ENABLE
801 array_free_microshit (idle); 1021 array_free (periodic, EMPTY);
802 array_free_microshit (prepare); 1022#endif
803 array_free_microshit (check); 1023 array_free (prepare, EMPTY);
1024 array_free (check, EMPTY);
804 1025
805 method = 0; 1026 backend = 0;
806} 1027}
807 1028
808static void 1029void inline_size infy_fork (EV_P);
1030
1031void inline_size
809loop_fork (EV_P) 1032loop_fork (EV_P)
810{ 1033{
1034#if EV_USE_PORT
1035 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1036#endif
1037#if EV_USE_KQUEUE
1038 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
1039#endif
811#if EV_USE_EPOLL 1040#if EV_USE_EPOLL
812 if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A); 1041 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
813#endif 1042#endif
814#if EV_USE_KQUEUE 1043#if EV_USE_INOTIFY
815 if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A); 1044 infy_fork (EV_A);
816#endif 1045#endif
817 1046
818 if (ev_is_active (&sigev)) 1047 if (ev_is_active (&sigev))
819 { 1048 {
820 /* default loop */ 1049 /* default loop */
… …
833 postfork = 0; 1062 postfork = 0;
834} 1063}
835 1064
836#if EV_MULTIPLICITY 1065#if EV_MULTIPLICITY
837struct ev_loop * 1066struct ev_loop *
838ev_loop_new (int methods) 1067ev_loop_new (unsigned int flags)
839{ 1068{
840 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 1069 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
841 1070
842 memset (loop, 0, sizeof (struct ev_loop)); 1071 memset (loop, 0, sizeof (struct ev_loop));
843 1072
844 loop_init (EV_A_ methods); 1073 loop_init (EV_A_ flags);
845 1074
846 if (ev_method (EV_A)) 1075 if (ev_backend (EV_A))
847 return loop; 1076 return loop;
848 1077
849 return 0; 1078 return 0;
850} 1079}
851 1080
… …
864 1093
865#endif 1094#endif
866 1095
867#if EV_MULTIPLICITY 1096#if EV_MULTIPLICITY
868struct ev_loop * 1097struct ev_loop *
1098ev_default_loop_init (unsigned int flags)
869#else 1099#else
870int 1100int
1101ev_default_loop (unsigned int flags)
871#endif 1102#endif
872ev_default_loop (int methods)
873{ 1103{
874 if (sigpipe [0] == sigpipe [1]) 1104 if (sigpipe [0] == sigpipe [1])
875 if (pipe (sigpipe)) 1105 if (pipe (sigpipe))
876 return 0; 1106 return 0;
877 1107
878 if (!default_loop) 1108 if (!ev_default_loop_ptr)
879 { 1109 {
880#if EV_MULTIPLICITY 1110#if EV_MULTIPLICITY
881 struct ev_loop *loop = default_loop = &default_loop_struct; 1111 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
882#else 1112#else
883 default_loop = 1; 1113 ev_default_loop_ptr = 1;
884#endif 1114#endif
885 1115
886 loop_init (EV_A_ methods); 1116 loop_init (EV_A_ flags);
887 1117
888 if (ev_method (EV_A)) 1118 if (ev_backend (EV_A))
889 { 1119 {
890 siginit (EV_A); 1120 siginit (EV_A);
891 1121
892#ifndef WIN32 1122#ifndef _WIN32
893 ev_signal_init (&childev, childcb, SIGCHLD); 1123 ev_signal_init (&childev, childcb, SIGCHLD);
894 ev_set_priority (&childev, EV_MAXPRI); 1124 ev_set_priority (&childev, EV_MAXPRI);
895 ev_signal_start (EV_A_ &childev); 1125 ev_signal_start (EV_A_ &childev);
896 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1126 ev_unref (EV_A); /* child watcher should not keep loop alive */
897#endif 1127#endif
898 } 1128 }
899 else 1129 else
900 default_loop = 0; 1130 ev_default_loop_ptr = 0;
901 } 1131 }
902 1132
903 return default_loop; 1133 return ev_default_loop_ptr;
904} 1134}
905 1135
906void 1136void
907ev_default_destroy (void) 1137ev_default_destroy (void)
908{ 1138{
909#if EV_MULTIPLICITY 1139#if EV_MULTIPLICITY
910 struct ev_loop *loop = default_loop; 1140 struct ev_loop *loop = ev_default_loop_ptr;
911#endif 1141#endif
912 1142
913#ifndef WIN32 1143#ifndef _WIN32
914 ev_ref (EV_A); /* child watcher */ 1144 ev_ref (EV_A); /* child watcher */
915 ev_signal_stop (EV_A_ &childev); 1145 ev_signal_stop (EV_A_ &childev);
916#endif 1146#endif
917 1147
918 ev_ref (EV_A); /* signal watcher */ 1148 ev_ref (EV_A); /* signal watcher */
… …
926 1156
927void 1157void
928ev_default_fork (void) 1158ev_default_fork (void)
929{ 1159{
930#if EV_MULTIPLICITY 1160#if EV_MULTIPLICITY
931 struct ev_loop *loop = default_loop; 1161 struct ev_loop *loop = ev_default_loop_ptr;
932#endif 1162#endif
933 1163
934 if (method) 1164 if (backend)
935 postfork = 1; 1165 postfork = 1;
936} 1166}
937 1167
938/*****************************************************************************/ 1168/*****************************************************************************/
939 1169
940static int 1170void
941any_pending (EV_P) 1171ev_invoke (EV_P_ void *w, int revents)
942{ 1172{
943 int pri; 1173 EV_CB_INVOKE ((W)w, revents);
944
945 for (pri = NUMPRI; pri--; )
946 if (pendingcnt [pri])
947 return 1;
948
949 return 0;
950} 1174}
951 1175
952static void 1176void inline_speed
953call_pending (EV_P) 1177call_pending (EV_P)
954{ 1178{
955 int pri; 1179 int pri;
956 1180
957 for (pri = NUMPRI; pri--; ) 1181 for (pri = NUMPRI; pri--; )
958 while (pendingcnt [pri]) 1182 while (pendingcnt [pri])
959 { 1183 {
960 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 1184 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
961 1185
962 if (p->w) 1186 if (expect_true (p->w))
963 { 1187 {
1188 /*assert (("non-pending watcher on pending list", p->w->pending));*/
1189
964 p->w->pending = 0; 1190 p->w->pending = 0;
965 EV_CB_INVOKE (p->w, p->events); 1191 EV_CB_INVOKE (p->w, p->events);
966 } 1192 }
967 } 1193 }
968} 1194}
969 1195
970static void 1196void inline_size
971timers_reify (EV_P) 1197timers_reify (EV_P)
972{ 1198{
973 while (timercnt && ((WT)timers [0])->at <= mn_now) 1199 while (timercnt && ((WT)timers [0])->at <= mn_now)
974 { 1200 {
975 struct ev_timer *w = timers [0]; 1201 ev_timer *w = timers [0];
976 1202
977 assert (("inactive timer on timer heap detected", ev_is_active (w))); 1203 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
978 1204
979 /* first reschedule or stop timer */ 1205 /* first reschedule or stop timer */
980 if (w->repeat) 1206 if (w->repeat)
981 { 1207 {
982 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 1208 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1209
983 ((WT)w)->at = mn_now + w->repeat; 1210 ((WT)w)->at += w->repeat;
1211 if (((WT)w)->at < mn_now)
1212 ((WT)w)->at = mn_now;
1213
984 downheap ((WT *)timers, timercnt, 0); 1214 downheap ((WT *)timers, timercnt, 0);
985 } 1215 }
986 else 1216 else
987 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ 1217 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
988 1218
989 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); 1219 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
990 } 1220 }
991} 1221}
992 1222
993static void 1223#if EV_PERIODIC_ENABLE
1224void inline_size
994periodics_reify (EV_P) 1225periodics_reify (EV_P)
995{ 1226{
996 while (periodiccnt && ((WT)periodics [0])->at <= rt_now) 1227 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
997 { 1228 {
998 struct ev_periodic *w = periodics [0]; 1229 ev_periodic *w = periodics [0];
999 1230
1000 assert (("inactive timer on periodic heap detected", ev_is_active (w))); 1231 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1001 1232
1002 /* first reschedule or stop timer */ 1233 /* first reschedule or stop timer */
1003 if (w->reschedule_cb) 1234 if (w->reschedule_cb)
1004 { 1235 {
1005 ev_tstamp at = ((WT)w)->at = w->reschedule_cb (w, rt_now + 0.0001); 1236 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
1006
1007 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > rt_now)); 1237 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1008 downheap ((WT *)periodics, periodiccnt, 0); 1238 downheap ((WT *)periodics, periodiccnt, 0);
1009 } 1239 }
1010 else if (w->interval) 1240 else if (w->interval)
1011 { 1241 {
1012 ((WT)w)->at += floor ((rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval; 1242 ((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
1013 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > rt_now)); 1243 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1014 downheap ((WT *)periodics, periodiccnt, 0); 1244 downheap ((WT *)periodics, periodiccnt, 0);
1015 } 1245 }
1016 else 1246 else
1017 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 1247 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1018 1248
1019 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 1249 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1020 } 1250 }
1021} 1251}
1022 1252
1023static void 1253static void noinline
1024periodics_reschedule (EV_P) 1254periodics_reschedule (EV_P)
1025{ 1255{
1026 int i; 1256 int i;
1027 1257
1028 /* adjust periodics after time jump */ 1258 /* adjust periodics after time jump */
1029 for (i = 0; i < periodiccnt; ++i) 1259 for (i = 0; i < periodiccnt; ++i)
1030 { 1260 {
1031 struct ev_periodic *w = periodics [i]; 1261 ev_periodic *w = periodics [i];
1032 1262
1033 if (w->reschedule_cb) 1263 if (w->reschedule_cb)
1034 ((WT)w)->at = w->reschedule_cb (w, rt_now); 1264 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1035 else if (w->interval) 1265 else if (w->interval)
1036 ((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval; 1266 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
1037 } 1267 }
1038 1268
1039 /* now rebuild the heap */ 1269 /* now rebuild the heap */
1040 for (i = periodiccnt >> 1; i--; ) 1270 for (i = periodiccnt >> 1; i--; )
1041 downheap ((WT *)periodics, periodiccnt, i); 1271 downheap ((WT *)periodics, periodiccnt, i);
1042} 1272}
1273#endif
1043 1274
1044inline int 1275#if EV_IDLE_ENABLE
1276void inline_size
1277idle_reify (EV_P)
1278{
1279 if (expect_false (idleall))
1280 {
1281 int pri;
1282
1283 for (pri = NUMPRI; pri--; )
1284 {
1285 if (pendingcnt [pri])
1286 break;
1287
1288 if (idlecnt [pri])
1289 {
1290 queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
1291 break;
1292 }
1293 }
1294 }
1295}
1296#endif
1297
1298int inline_size
1045time_update_monotonic (EV_P) 1299time_update_monotonic (EV_P)
1046{ 1300{
1047 mn_now = get_clock (); 1301 mn_now = get_clock ();
1048 1302
1049 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 1303 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1050 { 1304 {
1051 rt_now = rtmn_diff + mn_now; 1305 ev_rt_now = rtmn_diff + mn_now;
1052 return 0; 1306 return 0;
1053 } 1307 }
1054 else 1308 else
1055 { 1309 {
1056 now_floor = mn_now; 1310 now_floor = mn_now;
1057 rt_now = ev_time (); 1311 ev_rt_now = ev_time ();
1058 return 1; 1312 return 1;
1059 } 1313 }
1060} 1314}
1061 1315
1062static void 1316void inline_size
1063time_update (EV_P) 1317time_update (EV_P)
1064{ 1318{
1065 int i; 1319 int i;
1066 1320
1067#if EV_USE_MONOTONIC 1321#if EV_USE_MONOTONIC
… …
1069 { 1323 {
1070 if (time_update_monotonic (EV_A)) 1324 if (time_update_monotonic (EV_A))
1071 { 1325 {
1072 ev_tstamp odiff = rtmn_diff; 1326 ev_tstamp odiff = rtmn_diff;
1073 1327
1074 for (i = 4; --i; ) /* loop a few times, before making important decisions */ 1328 /* loop a few times, before making important decisions.
1329 * on the choice of "4": one iteration isn't enough,
1330 * in case we get preempted during the calls to
1331 * ev_time and get_clock. a second call is almost guaranteed
1332 * to succeed in that case, though. and looping a few more times
1333 * doesn't hurt either as we only do this on time-jumps or
1334 * in the unlikely event of having been preempted here.
1335 */
1336 for (i = 4; --i; )
1075 { 1337 {
1076 rtmn_diff = rt_now - mn_now; 1338 rtmn_diff = ev_rt_now - mn_now;
1077 1339
1078 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) 1340 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1079 return; /* all is well */ 1341 return; /* all is well */
1080 1342
1081 rt_now = ev_time (); 1343 ev_rt_now = ev_time ();
1082 mn_now = get_clock (); 1344 mn_now = get_clock ();
1083 now_floor = mn_now; 1345 now_floor = mn_now;
1084 } 1346 }
1085 1347
1348# if EV_PERIODIC_ENABLE
1086 periodics_reschedule (EV_A); 1349 periodics_reschedule (EV_A);
1350# endif
1087 /* no timer adjustment, as the monotonic clock doesn't jump */ 1351 /* no timer adjustment, as the monotonic clock doesn't jump */
1088 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */ 1352 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1089 } 1353 }
1090 } 1354 }
1091 else 1355 else
1092#endif 1356#endif
1093 { 1357 {
1094 rt_now = ev_time (); 1358 ev_rt_now = ev_time ();
1095 1359
1096 if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP)) 1360 if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
1097 { 1361 {
1362#if EV_PERIODIC_ENABLE
1098 periodics_reschedule (EV_A); 1363 periodics_reschedule (EV_A);
1364#endif
1099 1365
1100 /* adjust timers. this is easy, as the offset is the same for all */ 1366 /* adjust timers. this is easy, as the offset is the same for all of them */
1101 for (i = 0; i < timercnt; ++i) 1367 for (i = 0; i < timercnt; ++i)
1102 ((WT)timers [i])->at += rt_now - mn_now; 1368 ((WT)timers [i])->at += ev_rt_now - mn_now;
1103 } 1369 }
1104 1370
1105 mn_now = rt_now; 1371 mn_now = ev_rt_now;
1106 } 1372 }
1107} 1373}
1108 1374
1109void 1375void
1110ev_ref (EV_P) 1376ev_ref (EV_P)
… …
1121static int loop_done; 1387static int loop_done;
1122 1388
1123void 1389void
1124ev_loop (EV_P_ int flags) 1390ev_loop (EV_P_ int flags)
1125{ 1391{
1126 double block;
1127 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0; 1392 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
1393 ? EVUNLOOP_ONE
1394 : EVUNLOOP_CANCEL;
1395
1396 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
1128 1397
1129 do 1398 do
1130 { 1399 {
1400#ifndef _WIN32
1401 if (expect_false (curpid)) /* penalise the forking check even more */
1402 if (expect_false (getpid () != curpid))
1403 {
1404 curpid = getpid ();
1405 postfork = 1;
1406 }
1407#endif
1408
1409#if EV_FORK_ENABLE
1410 /* we might have forked, so queue fork handlers */
1411 if (expect_false (postfork))
1412 if (forkcnt)
1413 {
1414 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1415 call_pending (EV_A);
1416 }
1417#endif
1418
1131 /* queue check watchers (and execute them) */ 1419 /* queue prepare watchers (and execute them) */
1132 if (expect_false (preparecnt)) 1420 if (expect_false (preparecnt))
1133 { 1421 {
1134 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 1422 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1135 call_pending (EV_A); 1423 call_pending (EV_A);
1136 } 1424 }
1137 1425
1426 if (expect_false (!activecnt))
1427 break;
1428
1138 /* we might have forked, so reify kernel state if necessary */ 1429 /* we might have forked, so reify kernel state if necessary */
1139 if (expect_false (postfork)) 1430 if (expect_false (postfork))
1140 loop_fork (EV_A); 1431 loop_fork (EV_A);
1141 1432
1142 /* update fd-related kernel structures */ 1433 /* update fd-related kernel structures */
1143 fd_reify (EV_A); 1434 fd_reify (EV_A);
1144 1435
1145 /* calculate blocking time */ 1436 /* calculate blocking time */
1437 {
1438 ev_tstamp block;
1146 1439
1147 /* we only need this for !monotonic clock or timers, but as we basically 1440 if (expect_false (flags & EVLOOP_NONBLOCK || idleall || !activecnt))
1148 always have timers, we just calculate it always */ 1441 block = 0.; /* do not block at all */
1442 else
1443 {
1444 /* update time to cancel out callback processing overhead */
1149#if EV_USE_MONOTONIC 1445#if EV_USE_MONOTONIC
1150 if (expect_true (have_monotonic)) 1446 if (expect_true (have_monotonic))
1151 time_update_monotonic (EV_A); 1447 time_update_monotonic (EV_A);
1152 else 1448 else
1153#endif 1449#endif
1154 { 1450 {
1155 rt_now = ev_time (); 1451 ev_rt_now = ev_time ();
1156 mn_now = rt_now; 1452 mn_now = ev_rt_now;
1157 } 1453 }
1158 1454
1159 if (flags & EVLOOP_NONBLOCK || idlecnt)
1160 block = 0.;
1161 else
1162 {
1163 block = MAX_BLOCKTIME; 1455 block = MAX_BLOCKTIME;
1164 1456
1165 if (timercnt) 1457 if (timercnt)
1166 { 1458 {
1167 ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge; 1459 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1168 if (block > to) block = to; 1460 if (block > to) block = to;
1169 } 1461 }
1170 1462
1463#if EV_PERIODIC_ENABLE
1171 if (periodiccnt) 1464 if (periodiccnt)
1172 { 1465 {
1173 ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge; 1466 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1174 if (block > to) block = to; 1467 if (block > to) block = to;
1175 } 1468 }
1469#endif
1176 1470
1177 if (block < 0.) block = 0.; 1471 if (expect_false (block < 0.)) block = 0.;
1178 } 1472 }
1179 1473
1474 ++loop_count;
1180 method_poll (EV_A_ block); 1475 backend_poll (EV_A_ block);
1476 }
1181 1477
1182 /* update rt_now, do magic */ 1478 /* update ev_rt_now, do magic */
1183 time_update (EV_A); 1479 time_update (EV_A);
1184 1480
1185 /* queue pending timers and reschedule them */ 1481 /* queue pending timers and reschedule them */
1186 timers_reify (EV_A); /* relative timers called last */ 1482 timers_reify (EV_A); /* relative timers called last */
1483#if EV_PERIODIC_ENABLE
1187 periodics_reify (EV_A); /* absolute timers called first */ 1484 periodics_reify (EV_A); /* absolute timers called first */
1485#endif
1188 1486
1487#if EV_IDLE_ENABLE
1189 /* queue idle watchers unless io or timers are pending */ 1488 /* queue idle watchers unless other events are pending */
1190 if (idlecnt && !any_pending (EV_A)) 1489 idle_reify (EV_A);
1191 queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); 1490#endif
1192 1491
1193 /* queue check watchers, to be executed first */ 1492 /* queue check watchers, to be executed first */
1194 if (checkcnt) 1493 if (expect_false (checkcnt))
1195 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 1494 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1196 1495
1197 call_pending (EV_A); 1496 call_pending (EV_A);
1497
1198 } 1498 }
1199 while (activecnt && !loop_done); 1499 while (expect_true (activecnt && !loop_done));
1200 1500
1201 if (loop_done != 2) 1501 if (loop_done == EVUNLOOP_ONE)
1202 loop_done = 0; 1502 loop_done = EVUNLOOP_CANCEL;
1203} 1503}
1204 1504
1205void 1505void
1206ev_unloop (EV_P_ int how) 1506ev_unloop (EV_P_ int how)
1207{ 1507{
1208 loop_done = how; 1508 loop_done = how;
1209} 1509}
1210 1510
1211/*****************************************************************************/ 1511/*****************************************************************************/
1212 1512
1213inline void 1513void inline_size
1214wlist_add (WL *head, WL elem) 1514wlist_add (WL *head, WL elem)
1215{ 1515{
1216 elem->next = *head; 1516 elem->next = *head;
1217 *head = elem; 1517 *head = elem;
1218} 1518}
1219 1519
1220inline void 1520void inline_size
1221wlist_del (WL *head, WL elem) 1521wlist_del (WL *head, WL elem)
1222{ 1522{
1223 while (*head) 1523 while (*head)
1224 { 1524 {
1225 if (*head == elem) 1525 if (*head == elem)
… …
1230 1530
1231 head = &(*head)->next; 1531 head = &(*head)->next;
1232 } 1532 }
1233} 1533}
1234 1534
1235inline void 1535void inline_speed
1236ev_clear_pending (EV_P_ W w) 1536clear_pending (EV_P_ W w)
1237{ 1537{
1238 if (w->pending) 1538 if (w->pending)
1239 { 1539 {
1240 pendings [ABSPRI (w)][w->pending - 1].w = 0; 1540 pendings [ABSPRI (w)][w->pending - 1].w = 0;
1241 w->pending = 0; 1541 w->pending = 0;
1242 } 1542 }
1243} 1543}
1244 1544
1245inline void 1545int
1546ev_clear_pending (EV_P_ void *w)
1547{
1548 W w_ = (W)w;
1549 int pending = w_->pending;
1550
1551 if (!pending)
1552 return 0;
1553
1554 w_->pending = 0;
1555 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
1556 p->w = 0;
1557
1558 return p->events;
1559}
1560
1561void inline_size
1562pri_adjust (EV_P_ W w)
1563{
1564 int pri = w->priority;
1565 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1566 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1567 w->priority = pri;
1568}
1569
1570void inline_speed
1246ev_start (EV_P_ W w, int active) 1571ev_start (EV_P_ W w, int active)
1247{ 1572{
1248 if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; 1573 pri_adjust (EV_A_ w);
1249 if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1250
1251 w->active = active; 1574 w->active = active;
1252 ev_ref (EV_A); 1575 ev_ref (EV_A);
1253} 1576}
1254 1577
1255inline void 1578void inline_size
1256ev_stop (EV_P_ W w) 1579ev_stop (EV_P_ W w)
1257{ 1580{
1258 ev_unref (EV_A); 1581 ev_unref (EV_A);
1259 w->active = 0; 1582 w->active = 0;
1260} 1583}
1261 1584
1262/*****************************************************************************/ 1585/*****************************************************************************/
1263 1586
1264void 1587void
1265ev_io_start (EV_P_ struct ev_io *w) 1588ev_io_start (EV_P_ ev_io *w)
1266{ 1589{
1267 int fd = w->fd; 1590 int fd = w->fd;
1268 1591
1269 if (ev_is_active (w)) 1592 if (expect_false (ev_is_active (w)))
1270 return; 1593 return;
1271 1594
1272 assert (("ev_io_start called with negative fd", fd >= 0)); 1595 assert (("ev_io_start called with negative fd", fd >= 0));
1273 1596
1274 ev_start (EV_A_ (W)w, 1); 1597 ev_start (EV_A_ (W)w, 1);
… …
1277 1600
1278 fd_change (EV_A_ fd); 1601 fd_change (EV_A_ fd);
1279} 1602}
1280 1603
1281void 1604void
1282ev_io_stop (EV_P_ struct ev_io *w) 1605ev_io_stop (EV_P_ ev_io *w)
1283{ 1606{
1284 ev_clear_pending (EV_A_ (W)w); 1607 clear_pending (EV_A_ (W)w);
1285 if (!ev_is_active (w)) 1608 if (expect_false (!ev_is_active (w)))
1286 return; 1609 return;
1610
1611 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1287 1612
1288 wlist_del ((WL *)&anfds[w->fd].head, (WL)w); 1613 wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
1289 ev_stop (EV_A_ (W)w); 1614 ev_stop (EV_A_ (W)w);
1290 1615
1291 fd_change (EV_A_ w->fd); 1616 fd_change (EV_A_ w->fd);
1292} 1617}
1293 1618
1294void 1619void
1295ev_timer_start (EV_P_ struct ev_timer *w) 1620ev_timer_start (EV_P_ ev_timer *w)
1296{ 1621{
1297 if (ev_is_active (w)) 1622 if (expect_false (ev_is_active (w)))
1298 return; 1623 return;
1299 1624
1300 ((WT)w)->at += mn_now; 1625 ((WT)w)->at += mn_now;
1301 1626
1302 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 1627 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1303 1628
1304 ev_start (EV_A_ (W)w, ++timercnt); 1629 ev_start (EV_A_ (W)w, ++timercnt);
1305 array_needsize (struct ev_timer *, timers, timermax, timercnt, (void)); 1630 array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);
1306 timers [timercnt - 1] = w; 1631 timers [timercnt - 1] = w;
1307 upheap ((WT *)timers, timercnt - 1); 1632 upheap ((WT *)timers, timercnt - 1);
1308 1633
1634 /*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
1635}
1636
1637void
1638ev_timer_stop (EV_P_ ev_timer *w)
1639{
1640 clear_pending (EV_A_ (W)w);
1641 if (expect_false (!ev_is_active (w)))
1642 return;
1643
1309 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 1644 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1310}
1311 1645
1312void 1646 {
1313ev_timer_stop (EV_P_ struct ev_timer *w) 1647 int active = ((W)w)->active;
1314{
1315 ev_clear_pending (EV_A_ (W)w);
1316 if (!ev_is_active (w))
1317 return;
1318 1648
1319 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 1649 if (expect_true (--active < --timercnt))
1320
1321 if (((W)w)->active < timercnt--)
1322 { 1650 {
1323 timers [((W)w)->active - 1] = timers [timercnt]; 1651 timers [active] = timers [timercnt];
1324 downheap ((WT *)timers, timercnt, ((W)w)->active - 1); 1652 adjustheap ((WT *)timers, timercnt, active);
1325 } 1653 }
1654 }
1326 1655
1327 ((WT)w)->at = w->repeat; 1656 ((WT)w)->at -= mn_now;
1328 1657
1329 ev_stop (EV_A_ (W)w); 1658 ev_stop (EV_A_ (W)w);
1330} 1659}
1331 1660
1332void 1661void
1333ev_timer_again (EV_P_ struct ev_timer *w) 1662ev_timer_again (EV_P_ ev_timer *w)
1334{ 1663{
1335 if (ev_is_active (w)) 1664 if (ev_is_active (w))
1336 { 1665 {
1337 if (w->repeat) 1666 if (w->repeat)
1667 {
1668 ((WT)w)->at = mn_now + w->repeat;
1338 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1, mn_now + w->repeat); 1669 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1670 }
1339 else 1671 else
1340 ev_timer_stop (EV_A_ w); 1672 ev_timer_stop (EV_A_ w);
1341 } 1673 }
1342 else if (w->repeat) 1674 else if (w->repeat)
1675 {
1676 w->at = w->repeat;
1343 ev_timer_start (EV_A_ w); 1677 ev_timer_start (EV_A_ w);
1678 }
1344} 1679}
1345 1680
1681#if EV_PERIODIC_ENABLE
1346void 1682void
1347ev_periodic_start (EV_P_ struct ev_periodic *w) 1683ev_periodic_start (EV_P_ ev_periodic *w)
1348{ 1684{
1349 if (ev_is_active (w)) 1685 if (expect_false (ev_is_active (w)))
1350 return; 1686 return;
1351 1687
1352 if (w->reschedule_cb) 1688 if (w->reschedule_cb)
1353 ((WT)w)->at = w->reschedule_cb (w, rt_now); 1689 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1354 else if (w->interval) 1690 else if (w->interval)
1355 { 1691 {
1356 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 1692 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1357 /* this formula differs from the one in periodic_reify because we do not always round up */ 1693 /* this formula differs from the one in periodic_reify because we do not always round up */
1358 ((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval; 1694 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
1359 } 1695 }
1360 1696
1361 ev_start (EV_A_ (W)w, ++periodiccnt); 1697 ev_start (EV_A_ (W)w, ++periodiccnt);
1362 array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void)); 1698 array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1363 periodics [periodiccnt - 1] = w; 1699 periodics [periodiccnt - 1] = w;
1364 upheap ((WT *)periodics, periodiccnt - 1); 1700 upheap ((WT *)periodics, periodiccnt - 1);
1365 1701
1702 /*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
1703}
1704
1705void
1706ev_periodic_stop (EV_P_ ev_periodic *w)
1707{
1708 clear_pending (EV_A_ (W)w);
1709 if (expect_false (!ev_is_active (w)))
1710 return;
1711
1366 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1712 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1367}
1368 1713
1369void 1714 {
1370ev_periodic_stop (EV_P_ struct ev_periodic *w) 1715 int active = ((W)w)->active;
1371{
1372 ev_clear_pending (EV_A_ (W)w);
1373 if (!ev_is_active (w))
1374 return;
1375 1716
1376 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1717 if (expect_true (--active < --periodiccnt))
1377
1378 if (((W)w)->active < periodiccnt--)
1379 { 1718 {
1380 periodics [((W)w)->active - 1] = periodics [periodiccnt]; 1719 periodics [active] = periodics [periodiccnt];
1381 downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1); 1720 adjustheap ((WT *)periodics, periodiccnt, active);
1382 } 1721 }
1722 }
1383 1723
1384 ev_stop (EV_A_ (W)w); 1724 ev_stop (EV_A_ (W)w);
1385} 1725}
1386 1726
1387void 1727void
1388ev_periodic_again (EV_P_ struct ev_periodic *w) 1728ev_periodic_again (EV_P_ ev_periodic *w)
1389{ 1729{
1390 /* TODO: use adjustheap and recalculation */ 1730 /* TODO: use adjustheap and recalculation */
1391 ev_periodic_stop (EV_A_ w); 1731 ev_periodic_stop (EV_A_ w);
1392 ev_periodic_start (EV_A_ w); 1732 ev_periodic_start (EV_A_ w);
1393} 1733}
1394 1734#endif
1395void
1396ev_idle_start (EV_P_ struct ev_idle *w)
1397{
1398 if (ev_is_active (w))
1399 return;
1400
1401 ev_start (EV_A_ (W)w, ++idlecnt);
1402 array_needsize (struct ev_idle *, idles, idlemax, idlecnt, (void));
1403 idles [idlecnt - 1] = w;
1404}
1405
1406void
1407ev_idle_stop (EV_P_ struct ev_idle *w)
1408{
1409 ev_clear_pending (EV_A_ (W)w);
1410 if (ev_is_active (w))
1411 return;
1412
1413 idles [((W)w)->active - 1] = idles [--idlecnt];
1414 ev_stop (EV_A_ (W)w);
1415}
1416
1417void
1418ev_prepare_start (EV_P_ struct ev_prepare *w)
1419{
1420 if (ev_is_active (w))
1421 return;
1422
1423 ev_start (EV_A_ (W)w, ++preparecnt);
1424 array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, (void));
1425 prepares [preparecnt - 1] = w;
1426}
1427
1428void
1429ev_prepare_stop (EV_P_ struct ev_prepare *w)
1430{
1431 ev_clear_pending (EV_A_ (W)w);
1432 if (ev_is_active (w))
1433 return;
1434
1435 prepares [((W)w)->active - 1] = prepares [--preparecnt];
1436 ev_stop (EV_A_ (W)w);
1437}
1438
1439void
1440ev_check_start (EV_P_ struct ev_check *w)
1441{
1442 if (ev_is_active (w))
1443 return;
1444
1445 ev_start (EV_A_ (W)w, ++checkcnt);
1446 array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void));
1447 checks [checkcnt - 1] = w;
1448}
1449
1450void
1451ev_check_stop (EV_P_ struct ev_check *w)
1452{
1453 ev_clear_pending (EV_A_ (W)w);
1454 if (ev_is_active (w))
1455 return;
1456
1457 checks [((W)w)->active - 1] = checks [--checkcnt];
1458 ev_stop (EV_A_ (W)w);
1459}
1460 1735
1461#ifndef SA_RESTART 1736#ifndef SA_RESTART
1462# define SA_RESTART 0 1737# define SA_RESTART 0
1463#endif 1738#endif
1464 1739
1465void 1740void
1466ev_signal_start (EV_P_ struct ev_signal *w) 1741ev_signal_start (EV_P_ ev_signal *w)
1467{ 1742{
1468#if EV_MULTIPLICITY 1743#if EV_MULTIPLICITY
1469 assert (("signal watchers are only supported in the default loop", loop == default_loop)); 1744 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1470#endif 1745#endif
1471 if (ev_is_active (w)) 1746 if (expect_false (ev_is_active (w)))
1472 return; 1747 return;
1473 1748
1474 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 1749 assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1475 1750
1476 ev_start (EV_A_ (W)w, 1); 1751 ev_start (EV_A_ (W)w, 1);
1477 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); 1752 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1478 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); 1753 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1479 1754
1480 if (!((WL)w)->next) 1755 if (!((WL)w)->next)
1481 { 1756 {
1482#if WIN32 1757#if _WIN32
1483 signal (w->signum, sighandler); 1758 signal (w->signum, sighandler);
1484#else 1759#else
1485 struct sigaction sa; 1760 struct sigaction sa;
1486 sa.sa_handler = sighandler; 1761 sa.sa_handler = sighandler;
1487 sigfillset (&sa.sa_mask); 1762 sigfillset (&sa.sa_mask);
… …
1490#endif 1765#endif
1491 } 1766 }
1492} 1767}
1493 1768
1494void 1769void
1495ev_signal_stop (EV_P_ struct ev_signal *w) 1770ev_signal_stop (EV_P_ ev_signal *w)
1496{ 1771{
1497 ev_clear_pending (EV_A_ (W)w); 1772 clear_pending (EV_A_ (W)w);
1498 if (!ev_is_active (w)) 1773 if (expect_false (!ev_is_active (w)))
1499 return; 1774 return;
1500 1775
1501 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); 1776 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1502 ev_stop (EV_A_ (W)w); 1777 ev_stop (EV_A_ (W)w);
1503 1778
1504 if (!signals [w->signum - 1].head) 1779 if (!signals [w->signum - 1].head)
1505 signal (w->signum, SIG_DFL); 1780 signal (w->signum, SIG_DFL);
1506} 1781}
1507 1782
1508void 1783void
1509ev_child_start (EV_P_ struct ev_child *w) 1784ev_child_start (EV_P_ ev_child *w)
1510{ 1785{
1511#if EV_MULTIPLICITY 1786#if EV_MULTIPLICITY
1512 assert (("child watchers are only supported in the default loop", loop == default_loop)); 1787 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1513#endif 1788#endif
1514 if (ev_is_active (w)) 1789 if (expect_false (ev_is_active (w)))
1515 return; 1790 return;
1516 1791
1517 ev_start (EV_A_ (W)w, 1); 1792 ev_start (EV_A_ (W)w, 1);
1518 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1793 wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1519} 1794}
1520 1795
1521void 1796void
1522ev_child_stop (EV_P_ struct ev_child *w) 1797ev_child_stop (EV_P_ ev_child *w)
1523{ 1798{
1524 ev_clear_pending (EV_A_ (W)w); 1799 clear_pending (EV_A_ (W)w);
1525 if (ev_is_active (w)) 1800 if (expect_false (!ev_is_active (w)))
1526 return; 1801 return;
1527 1802
1528 wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1803 wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1529 ev_stop (EV_A_ (W)w); 1804 ev_stop (EV_A_ (W)w);
1530} 1805}
1531 1806
1807#if EV_STAT_ENABLE
1808
1809# ifdef _WIN32
1810# undef lstat
1811# define lstat(a,b) _stati64 (a,b)
1812# endif
1813
1814#define DEF_STAT_INTERVAL 5.0074891
1815#define MIN_STAT_INTERVAL 0.1074891
1816
1817static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
1818
1819#if EV_USE_INOTIFY
1820# define EV_INOTIFY_BUFSIZE 8192
1821
1822static void noinline
1823infy_add (EV_P_ ev_stat *w)
1824{
1825 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);
1826
1827 if (w->wd < 0)
1828 {
1829 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
1830
1831 /* monitor some parent directory for speedup hints */
1832 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
1833 {
1834 char path [4096];
1835 strcpy (path, w->path);
1836
1837 do
1838 {
1839 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
1840 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
1841
1842 char *pend = strrchr (path, '/');
1843
1844 if (!pend)
1845 break; /* whoops, no '/', complain to your admin */
1846
1847 *pend = 0;
1848 w->wd = inotify_add_watch (fs_fd, path, mask);
1849 }
1850 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
1851 }
1852 }
1853 else
1854 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
1855
1856 if (w->wd >= 0)
1857 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
1858}
1859
1860static void noinline
1861infy_del (EV_P_ ev_stat *w)
1862{
1863 int slot;
1864 int wd = w->wd;
1865
1866 if (wd < 0)
1867 return;
1868
1869 w->wd = -2;
1870 slot = wd & (EV_INOTIFY_HASHSIZE - 1);
1871 wlist_del (&fs_hash [slot].head, (WL)w);
1872
1873 /* remove this watcher, if others are watching it, they will rearm */
1874 inotify_rm_watch (fs_fd, wd);
1875}
1876
1877static void noinline
1878infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
1879{
1880 if (slot < 0)
1881 /* overflow, need to check for all hahs slots */
1882 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
1883 infy_wd (EV_A_ slot, wd, ev);
1884 else
1885 {
1886 WL w_;
1887
1888 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
1889 {
1890 ev_stat *w = (ev_stat *)w_;
1891 w_ = w_->next; /* lets us remove this watcher and all before it */
1892
1893 if (w->wd == wd || wd == -1)
1894 {
1895 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
1896 {
1897 w->wd = -1;
1898 infy_add (EV_A_ w); /* re-add, no matter what */
1899 }
1900
1901 stat_timer_cb (EV_A_ &w->timer, 0);
1902 }
1903 }
1904 }
1905}
1906
1907static void
1908infy_cb (EV_P_ ev_io *w, int revents)
1909{
1910 char buf [EV_INOTIFY_BUFSIZE];
1911 struct inotify_event *ev = (struct inotify_event *)buf;
1912 int ofs;
1913 int len = read (fs_fd, buf, sizeof (buf));
1914
1915 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
1916 infy_wd (EV_A_ ev->wd, ev->wd, ev);
1917}
1918
1919void inline_size
1920infy_init (EV_P)
1921{
1922 if (fs_fd != -2)
1923 return;
1924
1925 fs_fd = inotify_init ();
1926
1927 if (fs_fd >= 0)
1928 {
1929 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
1930 ev_set_priority (&fs_w, EV_MAXPRI);
1931 ev_io_start (EV_A_ &fs_w);
1932 }
1933}
1934
1935void inline_size
1936infy_fork (EV_P)
1937{
1938 int slot;
1939
1940 if (fs_fd < 0)
1941 return;
1942
1943 close (fs_fd);
1944 fs_fd = inotify_init ();
1945
1946 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
1947 {
1948 WL w_ = fs_hash [slot].head;
1949 fs_hash [slot].head = 0;
1950
1951 while (w_)
1952 {
1953 ev_stat *w = (ev_stat *)w_;
1954 w_ = w_->next; /* lets us add this watcher */
1955
1956 w->wd = -1;
1957
1958 if (fs_fd >= 0)
1959 infy_add (EV_A_ w); /* re-add, no matter what */
1960 else
1961 ev_timer_start (EV_A_ &w->timer);
1962 }
1963
1964 }
1965}
1966
1967#endif
1968
1969void
1970ev_stat_stat (EV_P_ ev_stat *w)
1971{
1972 if (lstat (w->path, &w->attr) < 0)
1973 w->attr.st_nlink = 0;
1974 else if (!w->attr.st_nlink)
1975 w->attr.st_nlink = 1;
1976}
1977
1978static void noinline
1979stat_timer_cb (EV_P_ ev_timer *w_, int revents)
1980{
1981 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
1982
1983 /* we copy this here each the time so that */
1984 /* prev has the old value when the callback gets invoked */
1985 w->prev = w->attr;
1986 ev_stat_stat (EV_A_ w);
1987
1988 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
1989 if (
1990 w->prev.st_dev != w->attr.st_dev
1991 || w->prev.st_ino != w->attr.st_ino
1992 || w->prev.st_mode != w->attr.st_mode
1993 || w->prev.st_nlink != w->attr.st_nlink
1994 || w->prev.st_uid != w->attr.st_uid
1995 || w->prev.st_gid != w->attr.st_gid
1996 || w->prev.st_rdev != w->attr.st_rdev
1997 || w->prev.st_size != w->attr.st_size
1998 || w->prev.st_atime != w->attr.st_atime
1999 || w->prev.st_mtime != w->attr.st_mtime
2000 || w->prev.st_ctime != w->attr.st_ctime
2001 ) {
2002 #if EV_USE_INOTIFY
2003 infy_del (EV_A_ w);
2004 infy_add (EV_A_ w);
2005 ev_stat_stat (EV_A_ w); /* avoid race... */
2006 #endif
2007
2008 ev_feed_event (EV_A_ w, EV_STAT);
2009 }
2010}
2011
2012void
2013ev_stat_start (EV_P_ ev_stat *w)
2014{
2015 if (expect_false (ev_is_active (w)))
2016 return;
2017
2018 /* since we use memcmp, we need to clear any padding data etc. */
2019 memset (&w->prev, 0, sizeof (ev_statdata));
2020 memset (&w->attr, 0, sizeof (ev_statdata));
2021
2022 ev_stat_stat (EV_A_ w);
2023
2024 if (w->interval < MIN_STAT_INTERVAL)
2025 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2026
2027 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
2028 ev_set_priority (&w->timer, ev_priority (w));
2029
2030#if EV_USE_INOTIFY
2031 infy_init (EV_A);
2032
2033 if (fs_fd >= 0)
2034 infy_add (EV_A_ w);
2035 else
2036#endif
2037 ev_timer_start (EV_A_ &w->timer);
2038
2039 ev_start (EV_A_ (W)w, 1);
2040}
2041
2042void
2043ev_stat_stop (EV_P_ ev_stat *w)
2044{
2045 clear_pending (EV_A_ (W)w);
2046 if (expect_false (!ev_is_active (w)))
2047 return;
2048
2049#if EV_USE_INOTIFY
2050 infy_del (EV_A_ w);
2051#endif
2052 ev_timer_stop (EV_A_ &w->timer);
2053
2054 ev_stop (EV_A_ (W)w);
2055}
2056#endif
2057
2058#if EV_IDLE_ENABLE
2059void
2060ev_idle_start (EV_P_ ev_idle *w)
2061{
2062 if (expect_false (ev_is_active (w)))
2063 return;
2064
2065 pri_adjust (EV_A_ (W)w);
2066
2067 {
2068 int active = ++idlecnt [ABSPRI (w)];
2069
2070 ++idleall;
2071 ev_start (EV_A_ (W)w, active);
2072
2073 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2074 idles [ABSPRI (w)][active - 1] = w;
2075 }
2076}
2077
2078void
2079ev_idle_stop (EV_P_ ev_idle *w)
2080{
2081 clear_pending (EV_A_ (W)w);
2082 if (expect_false (!ev_is_active (w)))
2083 return;
2084
2085 {
2086 int active = ((W)w)->active;
2087
2088 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2089 ((W)idles [ABSPRI (w)][active - 1])->active = active;
2090
2091 ev_stop (EV_A_ (W)w);
2092 --idleall;
2093 }
2094}
2095#endif
2096
2097void
2098ev_prepare_start (EV_P_ ev_prepare *w)
2099{
2100 if (expect_false (ev_is_active (w)))
2101 return;
2102
2103 ev_start (EV_A_ (W)w, ++preparecnt);
2104 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2105 prepares [preparecnt - 1] = w;
2106}
2107
2108void
2109ev_prepare_stop (EV_P_ ev_prepare *w)
2110{
2111 clear_pending (EV_A_ (W)w);
2112 if (expect_false (!ev_is_active (w)))
2113 return;
2114
2115 {
2116 int active = ((W)w)->active;
2117 prepares [active - 1] = prepares [--preparecnt];
2118 ((W)prepares [active - 1])->active = active;
2119 }
2120
2121 ev_stop (EV_A_ (W)w);
2122}
2123
2124void
2125ev_check_start (EV_P_ ev_check *w)
2126{
2127 if (expect_false (ev_is_active (w)))
2128 return;
2129
2130 ev_start (EV_A_ (W)w, ++checkcnt);
2131 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2132 checks [checkcnt - 1] = w;
2133}
2134
2135void
2136ev_check_stop (EV_P_ ev_check *w)
2137{
2138 clear_pending (EV_A_ (W)w);
2139 if (expect_false (!ev_is_active (w)))
2140 return;
2141
2142 {
2143 int active = ((W)w)->active;
2144 checks [active - 1] = checks [--checkcnt];
2145 ((W)checks [active - 1])->active = active;
2146 }
2147
2148 ev_stop (EV_A_ (W)w);
2149}
2150
2151#if EV_EMBED_ENABLE
2152void noinline
2153ev_embed_sweep (EV_P_ ev_embed *w)
2154{
2155 ev_loop (w->loop, EVLOOP_NONBLOCK);
2156}
2157
2158static void
2159embed_cb (EV_P_ ev_io *io, int revents)
2160{
2161 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2162
2163 if (ev_cb (w))
2164 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2165 else
2166 ev_embed_sweep (loop, w);
2167}
2168
2169void
2170ev_embed_start (EV_P_ ev_embed *w)
2171{
2172 if (expect_false (ev_is_active (w)))
2173 return;
2174
2175 {
2176 struct ev_loop *loop = w->loop;
2177 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2178 ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
2179 }
2180
2181 ev_set_priority (&w->io, ev_priority (w));
2182 ev_io_start (EV_A_ &w->io);
2183
2184 ev_start (EV_A_ (W)w, 1);
2185}
2186
2187void
2188ev_embed_stop (EV_P_ ev_embed *w)
2189{
2190 clear_pending (EV_A_ (W)w);
2191 if (expect_false (!ev_is_active (w)))
2192 return;
2193
2194 ev_io_stop (EV_A_ &w->io);
2195
2196 ev_stop (EV_A_ (W)w);
2197}
2198#endif
2199
2200#if EV_FORK_ENABLE
2201void
2202ev_fork_start (EV_P_ ev_fork *w)
2203{
2204 if (expect_false (ev_is_active (w)))
2205 return;
2206
2207 ev_start (EV_A_ (W)w, ++forkcnt);
2208 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2209 forks [forkcnt - 1] = w;
2210}
2211
2212void
2213ev_fork_stop (EV_P_ ev_fork *w)
2214{
2215 clear_pending (EV_A_ (W)w);
2216 if (expect_false (!ev_is_active (w)))
2217 return;
2218
2219 {
2220 int active = ((W)w)->active;
2221 forks [active - 1] = forks [--forkcnt];
2222 ((W)forks [active - 1])->active = active;
2223 }
2224
2225 ev_stop (EV_A_ (W)w);
2226}
2227#endif
2228
1532/*****************************************************************************/ 2229/*****************************************************************************/
1533 2230
1534struct ev_once 2231struct ev_once
1535{ 2232{
1536 struct ev_io io; 2233 ev_io io;
1537 struct ev_timer to; 2234 ev_timer to;
1538 void (*cb)(int revents, void *arg); 2235 void (*cb)(int revents, void *arg);
1539 void *arg; 2236 void *arg;
1540}; 2237};
1541 2238
1542static void 2239static void
… …
1551 2248
1552 cb (revents, arg); 2249 cb (revents, arg);
1553} 2250}
1554 2251
1555static void 2252static void
1556once_cb_io (EV_P_ struct ev_io *w, int revents) 2253once_cb_io (EV_P_ ev_io *w, int revents)
1557{ 2254{
1558 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 2255 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1559} 2256}
1560 2257
1561static void 2258static void
1562once_cb_to (EV_P_ struct ev_timer *w, int revents) 2259once_cb_to (EV_P_ ev_timer *w, int revents)
1563{ 2260{
1564 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 2261 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1565} 2262}
1566 2263
1567void 2264void
1568ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 2265ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1569{ 2266{
1570 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 2267 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1571 2268
1572 if (!once) 2269 if (expect_false (!once))
2270 {
1573 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 2271 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1574 else 2272 return;
1575 { 2273 }
2274
1576 once->cb = cb; 2275 once->cb = cb;
1577 once->arg = arg; 2276 once->arg = arg;
1578 2277
1579 ev_init (&once->io, once_cb_io); 2278 ev_init (&once->io, once_cb_io);
1580 if (fd >= 0) 2279 if (fd >= 0)
1581 { 2280 {
1582 ev_io_set (&once->io, fd, events); 2281 ev_io_set (&once->io, fd, events);
1583 ev_io_start (EV_A_ &once->io); 2282 ev_io_start (EV_A_ &once->io);
1584 } 2283 }
1585 2284
1586 ev_init (&once->to, once_cb_to); 2285 ev_init (&once->to, once_cb_to);
1587 if (timeout >= 0.) 2286 if (timeout >= 0.)
1588 { 2287 {
1589 ev_timer_set (&once->to, timeout, 0.); 2288 ev_timer_set (&once->to, timeout, 0.);
1590 ev_timer_start (EV_A_ &once->to); 2289 ev_timer_start (EV_A_ &once->to);
1591 }
1592 } 2290 }
1593} 2291}
1594 2292
2293#ifdef __cplusplus
2294}
2295#endif
2296

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