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Comparing libev/ev.c (file contents):
Revision 1.85 by root, Sat Nov 10 03:13:50 2007 UTC vs.
Revision 1.183 by root, Wed Dec 12 05:11:56 2007 UTC

… …
26 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
29 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 */ 30 */
31
32#ifdef __cplusplus
33extern "C" {
34#endif
35
31#ifndef EV_STANDALONE 36#ifndef EV_STANDALONE
37# ifdef EV_CONFIG_H
38# include EV_CONFIG_H
39# else
32# include "config.h" 40# include "config.h"
41# endif
33 42
34# if HAVE_CLOCK_GETTIME 43# if HAVE_CLOCK_GETTIME
44# ifndef EV_USE_MONOTONIC
35# define EV_USE_MONOTONIC 1 45# define EV_USE_MONOTONIC 1
46# endif
47# ifndef EV_USE_REALTIME
36# define EV_USE_REALTIME 1 48# define EV_USE_REALTIME 1
49# endif
50# else
51# ifndef EV_USE_MONOTONIC
52# define EV_USE_MONOTONIC 0
53# endif
54# ifndef EV_USE_REALTIME
55# define EV_USE_REALTIME 0
56# endif
37# endif 57# endif
38 58
59# ifndef EV_USE_SELECT
39# if HAVE_SELECT && HAVE_SYS_SELECT_H 60# if HAVE_SELECT && HAVE_SYS_SELECT_H
40# define EV_USE_SELECT 1 61# define EV_USE_SELECT 1
62# else
63# define EV_USE_SELECT 0
64# endif
41# endif 65# endif
42 66
67# ifndef EV_USE_POLL
43# if HAVE_POLL && HAVE_POLL_H 68# if HAVE_POLL && HAVE_POLL_H
44# define EV_USE_POLL 1 69# define EV_USE_POLL 1
70# else
71# define EV_USE_POLL 0
72# endif
45# endif 73# endif
46 74
75# ifndef EV_USE_EPOLL
47# if HAVE_EPOLL && HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H 76# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
48# define EV_USE_EPOLL 1 77# define EV_USE_EPOLL 1
78# else
79# define EV_USE_EPOLL 0
80# endif
49# endif 81# endif
50 82
83# ifndef EV_USE_KQUEUE
51# if HAVE_KQUEUE && HAVE_WORKING_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H 84# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H
52# define EV_USE_KQUEUE 1 85# define EV_USE_KQUEUE 1
86# else
87# define EV_USE_KQUEUE 0
88# endif
89# endif
90
91# ifndef EV_USE_PORT
92# if HAVE_PORT_H && HAVE_PORT_CREATE
93# define EV_USE_PORT 1
94# else
95# define EV_USE_PORT 0
96# endif
97# endif
98
99# ifndef EV_USE_INOTIFY
100# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
101# define EV_USE_INOTIFY 1
102# else
103# define EV_USE_INOTIFY 0
104# endif
53# endif 105# endif
54 106
55#endif 107#endif
56 108
57#include <math.h> 109#include <math.h>
… …
66#include <sys/types.h> 118#include <sys/types.h>
67#include <time.h> 119#include <time.h>
68 120
69#include <signal.h> 121#include <signal.h>
70 122
71#ifndef WIN32
72# include <unistd.h>
73# include <sys/time.h>
74# include <sys/wait.h>
75#endif
76/**/
77
78#ifndef EV_USE_MONOTONIC
79# define EV_USE_MONOTONIC 1
80#endif
81
82#ifndef EV_USE_SELECT
83# define EV_USE_SELECT 1
84#endif
85
86#ifndef EV_USE_POLL
87# define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */
88#endif
89
90#ifndef EV_USE_EPOLL
91# define EV_USE_EPOLL 0
92#endif
93
94#ifndef EV_USE_KQUEUE
95# define EV_USE_KQUEUE 0
96#endif
97
98#ifndef EV_USE_WIN32
99# ifdef WIN32
100# define EV_USE_WIN32 0 /* it does not exist, use select */
101# undef EV_USE_SELECT
102# define EV_USE_SELECT 1
103# else
104# define EV_USE_WIN32 0
105# endif
106#endif
107
108#ifndef EV_USE_REALTIME
109# define EV_USE_REALTIME 1
110#endif
111
112/**/
113
114#ifndef CLOCK_MONOTONIC
115# undef EV_USE_MONOTONIC
116# define EV_USE_MONOTONIC 0
117#endif
118
119#ifndef CLOCK_REALTIME
120# undef EV_USE_REALTIME
121# define EV_USE_REALTIME 0
122#endif
123
124/**/
125
126#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
127#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */
128#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
129/*#define CLEANUP_INTERVAL 300. /* how often to try to free memory and re-check fds */
130
131#ifdef EV_H 123#ifdef EV_H
132# include EV_H 124# include EV_H
133#else 125#else
134# include "ev.h" 126# include "ev.h"
135#endif 127#endif
136 128
129#ifndef _WIN32
130# include <sys/time.h>
131# include <sys/wait.h>
132# include <unistd.h>
133#else
134# define WIN32_LEAN_AND_MEAN
135# include <windows.h>
136# ifndef EV_SELECT_IS_WINSOCKET
137# define EV_SELECT_IS_WINSOCKET 1
138# endif
139#endif
140
141/**/
142
143#ifndef EV_USE_MONOTONIC
144# define EV_USE_MONOTONIC 0
145#endif
146
147#ifndef EV_USE_REALTIME
148# define EV_USE_REALTIME 0
149#endif
150
151#ifndef EV_USE_SELECT
152# define EV_USE_SELECT 1
153#endif
154
155#ifndef EV_USE_POLL
156# ifdef _WIN32
157# define EV_USE_POLL 0
158# else
159# define EV_USE_POLL 1
160# endif
161#endif
162
163#ifndef EV_USE_EPOLL
164# define EV_USE_EPOLL 0
165#endif
166
167#ifndef EV_USE_KQUEUE
168# define EV_USE_KQUEUE 0
169#endif
170
171#ifndef EV_USE_PORT
172# define EV_USE_PORT 0
173#endif
174
175#ifndef EV_USE_INOTIFY
176# define EV_USE_INOTIFY 0
177#endif
178
179#ifndef EV_PID_HASHSIZE
180# if EV_MINIMAL
181# define EV_PID_HASHSIZE 1
182# else
183# define EV_PID_HASHSIZE 16
184# endif
185#endif
186
187#ifndef EV_INOTIFY_HASHSIZE
188# if EV_MINIMAL
189# define EV_INOTIFY_HASHSIZE 1
190# else
191# define EV_INOTIFY_HASHSIZE 16
192# endif
193#endif
194
195/**/
196
197#ifndef CLOCK_MONOTONIC
198# undef EV_USE_MONOTONIC
199# define EV_USE_MONOTONIC 0
200#endif
201
202#ifndef CLOCK_REALTIME
203# undef EV_USE_REALTIME
204# define EV_USE_REALTIME 0
205#endif
206
207#if EV_SELECT_IS_WINSOCKET
208# include <winsock.h>
209#endif
210
211#if !EV_STAT_ENABLE
212# define EV_USE_INOTIFY 0
213#endif
214
215#if EV_USE_INOTIFY
216# include <sys/inotify.h>
217#endif
218
219/**/
220
221/*
222 * This is used to avoid floating point rounding problems.
223 * It is added to ev_rt_now when scheduling periodics
224 * to ensure progress, time-wise, even when rounding
225 * errors are against us.
226 * This value is good at least till the year 4000.
227 * Better solutions welcome.
228 */
229#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
230
231#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
232#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
233/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
234
137#if __GNUC__ >= 3 235#if __GNUC__ >= 3
138# define expect(expr,value) __builtin_expect ((expr),(value)) 236# define expect(expr,value) __builtin_expect ((expr),(value))
139# define inline inline 237# define noinline __attribute__ ((noinline))
140#else 238#else
141# define expect(expr,value) (expr) 239# define expect(expr,value) (expr)
142# define inline static 240# define noinline
241# if __STDC_VERSION__ < 199901L
242# define inline
243# endif
143#endif 244#endif
144 245
145#define expect_false(expr) expect ((expr) != 0, 0) 246#define expect_false(expr) expect ((expr) != 0, 0)
146#define expect_true(expr) expect ((expr) != 0, 1) 247#define expect_true(expr) expect ((expr) != 0, 1)
248#define inline_size static inline
249
250#if EV_MINIMAL
251# define inline_speed static noinline
252#else
253# define inline_speed static inline
254#endif
147 255
148#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 256#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
149#define ABSPRI(w) ((w)->priority - EV_MINPRI) 257#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
150 258
259#define EMPTY /* required for microsofts broken pseudo-c compiler */
260#define EMPTY2(a,b) /* used to suppress some warnings */
261
151typedef struct ev_watcher *W; 262typedef ev_watcher *W;
152typedef struct ev_watcher_list *WL; 263typedef ev_watcher_list *WL;
153typedef struct ev_watcher_time *WT; 264typedef ev_watcher_time *WT;
154 265
155static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 266static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
156 267
268#ifdef _WIN32
157#include "ev_win32.c" 269# include "ev_win32.c"
270#endif
158 271
159/*****************************************************************************/ 272/*****************************************************************************/
160 273
161static void (*syserr_cb)(const char *msg); 274static void (*syserr_cb)(const char *msg);
162 275
276void
163void ev_set_syserr_cb (void (*cb)(const char *msg)) 277ev_set_syserr_cb (void (*cb)(const char *msg))
164{ 278{
165 syserr_cb = cb; 279 syserr_cb = cb;
166} 280}
167 281
168static void 282static void noinline
169syserr (const char *msg) 283syserr (const char *msg)
170{ 284{
171 if (!msg) 285 if (!msg)
172 msg = "(libev) system error"; 286 msg = "(libev) system error";
173 287
… …
180 } 294 }
181} 295}
182 296
183static void *(*alloc)(void *ptr, long size); 297static void *(*alloc)(void *ptr, long size);
184 298
299void
185void ev_set_allocator (void *(*cb)(void *ptr, long size)) 300ev_set_allocator (void *(*cb)(void *ptr, long size))
186{ 301{
187 alloc = cb; 302 alloc = cb;
188} 303}
189 304
190static void * 305inline_speed void *
191ev_realloc (void *ptr, long size) 306ev_realloc (void *ptr, long size)
192{ 307{
193 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size); 308 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
194 309
195 if (!ptr && size) 310 if (!ptr && size)
… …
209typedef struct 324typedef struct
210{ 325{
211 WL head; 326 WL head;
212 unsigned char events; 327 unsigned char events;
213 unsigned char reify; 328 unsigned char reify;
329#if EV_SELECT_IS_WINSOCKET
330 SOCKET handle;
331#endif
214} ANFD; 332} ANFD;
215 333
216typedef struct 334typedef struct
217{ 335{
218 W w; 336 W w;
219 int events; 337 int events;
220} ANPENDING; 338} ANPENDING;
221 339
340#if EV_USE_INOTIFY
341typedef struct
342{
343 WL head;
344} ANFS;
345#endif
346
222#if EV_MULTIPLICITY 347#if EV_MULTIPLICITY
223 348
224 struct ev_loop 349 struct ev_loop
225 { 350 {
351 ev_tstamp ev_rt_now;
352 #define ev_rt_now ((loop)->ev_rt_now)
226 #define VAR(name,decl) decl; 353 #define VAR(name,decl) decl;
227 #include "ev_vars.h" 354 #include "ev_vars.h"
228 #undef VAR 355 #undef VAR
229 }; 356 };
230 #include "ev_wrap.h" 357 #include "ev_wrap.h"
231 358
232 struct ev_loop default_loop_struct; 359 static struct ev_loop default_loop_struct;
233 static struct ev_loop *default_loop; 360 struct ev_loop *ev_default_loop_ptr;
234 361
235#else 362#else
236 363
364 ev_tstamp ev_rt_now;
237 #define VAR(name,decl) static decl; 365 #define VAR(name,decl) static decl;
238 #include "ev_vars.h" 366 #include "ev_vars.h"
239 #undef VAR 367 #undef VAR
240 368
241 static int default_loop; 369 static int ev_default_loop_ptr;
242 370
243#endif 371#endif
244 372
245/*****************************************************************************/ 373/*****************************************************************************/
246 374
247inline ev_tstamp 375ev_tstamp
248ev_time (void) 376ev_time (void)
249{ 377{
250#if EV_USE_REALTIME 378#if EV_USE_REALTIME
251 struct timespec ts; 379 struct timespec ts;
252 clock_gettime (CLOCK_REALTIME, &ts); 380 clock_gettime (CLOCK_REALTIME, &ts);
… …
256 gettimeofday (&tv, 0); 384 gettimeofday (&tv, 0);
257 return tv.tv_sec + tv.tv_usec * 1e-6; 385 return tv.tv_sec + tv.tv_usec * 1e-6;
258#endif 386#endif
259} 387}
260 388
261inline ev_tstamp 389ev_tstamp inline_size
262get_clock (void) 390get_clock (void)
263{ 391{
264#if EV_USE_MONOTONIC 392#if EV_USE_MONOTONIC
265 if (expect_true (have_monotonic)) 393 if (expect_true (have_monotonic))
266 { 394 {
… …
279{ 407{
280 return ev_rt_now; 408 return ev_rt_now;
281} 409}
282#endif 410#endif
283 411
284#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}
285 439
286#define array_needsize(type,base,cur,cnt,init) \ 440#define array_needsize(type,base,cur,cnt,init) \
287 if (expect_false ((cnt) > cur)) \ 441 if (expect_false ((cnt) > (cur))) \
288 { \ 442 { \
289 int newcnt = cur; \ 443 int ocur_ = (cur); \
290 do \ 444 (base) = (type *)array_realloc \
291 { \ 445 (sizeof (type), (base), &(cur), (cnt)); \
292 newcnt = array_roundsize (type, newcnt << 1); \ 446 init ((base) + (ocur_), (cur) - ocur_); \
293 } \
294 while ((cnt) > newcnt); \
295 \
296 base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\
297 init (base + cur, newcnt - cur); \
298 cur = newcnt; \
299 } 447 }
300 448
449#if 0
301#define array_slim(type,stem) \ 450#define array_slim(type,stem) \
302 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 451 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
303 { \ 452 { \
304 stem ## max = array_roundsize (stem ## cnt >> 1); \ 453 stem ## max = array_roundsize (stem ## cnt >> 1); \
305 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\ 454 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
306 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 455 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
307 } 456 }
308 457#endif
309/* microsoft's pseudo-c is quite far from C as the rest of the world and the standard knows it */
310/* bringing us everlasting joy in form of stupid extra macros that are not required in C */
311#define array_free_microshit(stem) \
312 ev_free (stem ## s); stem ## cnt = stem ## max = 0;
313 458
314#define array_free(stem, idx) \ 459#define array_free(stem, idx) \
315 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;
316 461
317/*****************************************************************************/ 462/*****************************************************************************/
318 463
319static void 464void noinline
465ev_feed_event (EV_P_ void *w, int revents)
466{
467 W w_ = (W)w;
468 int pri = ABSPRI (w_);
469
470 if (expect_false (w_->pending))
471 pendings [pri][w_->pending - 1].events |= revents;
472 else
473 {
474 w_->pending = ++pendingcnt [pri];
475 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
476 pendings [pri][w_->pending - 1].w = w_;
477 pendings [pri][w_->pending - 1].events = revents;
478 }
479}
480
481void inline_speed
482queue_events (EV_P_ W *events, int eventcnt, int type)
483{
484 int i;
485
486 for (i = 0; i < eventcnt; ++i)
487 ev_feed_event (EV_A_ events [i], type);
488}
489
490/*****************************************************************************/
491
492void inline_size
320anfds_init (ANFD *base, int count) 493anfds_init (ANFD *base, int count)
321{ 494{
322 while (count--) 495 while (count--)
323 { 496 {
324 base->head = 0; 497 base->head = 0;
… …
327 500
328 ++base; 501 ++base;
329 } 502 }
330} 503}
331 504
332void 505void inline_speed
333ev_feed_event (EV_P_ void *w, int revents)
334{
335 W w_ = (W)w;
336
337 if (w_->pending)
338 {
339 pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
340 return;
341 }
342
343 w_->pending = ++pendingcnt [ABSPRI (w_)];
344 array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], (void));
345 pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
346 pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
347}
348
349static void
350queue_events (EV_P_ W *events, int eventcnt, int type)
351{
352 int i;
353
354 for (i = 0; i < eventcnt; ++i)
355 ev_feed_event (EV_A_ events [i], type);
356}
357
358inline void
359fd_event (EV_P_ int fd, int revents) 506fd_event (EV_P_ int fd, int revents)
360{ 507{
361 ANFD *anfd = anfds + fd; 508 ANFD *anfd = anfds + fd;
362 struct ev_io *w; 509 ev_io *w;
363 510
364 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)
365 { 512 {
366 int ev = w->events & revents; 513 int ev = w->events & revents;
367 514
368 if (ev) 515 if (ev)
369 ev_feed_event (EV_A_ (W)w, ev); 516 ev_feed_event (EV_A_ (W)w, ev);
… …
371} 518}
372 519
373void 520void
374ev_feed_fd_event (EV_P_ int fd, int revents) 521ev_feed_fd_event (EV_P_ int fd, int revents)
375{ 522{
523 if (fd >= 0 && fd < anfdmax)
376 fd_event (EV_A_ fd, revents); 524 fd_event (EV_A_ fd, revents);
377} 525}
378 526
379/*****************************************************************************/ 527void inline_size
380
381static void
382fd_reify (EV_P) 528fd_reify (EV_P)
383{ 529{
384 int i; 530 int i;
385 531
386 for (i = 0; i < fdchangecnt; ++i) 532 for (i = 0; i < fdchangecnt; ++i)
387 { 533 {
388 int fd = fdchanges [i]; 534 int fd = fdchanges [i];
389 ANFD *anfd = anfds + fd; 535 ANFD *anfd = anfds + fd;
390 struct ev_io *w; 536 ev_io *w;
391 537
392 int events = 0; 538 int events = 0;
393 539
394 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)
395 events |= w->events; 541 events |= w->events;
396 542
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
397 anfd->reify = 0; 552 anfd->reify = 0;
398 553
399 method_modify (EV_A_ fd, anfd->events, events); 554 backend_modify (EV_A_ fd, anfd->events, events);
400 anfd->events = events; 555 anfd->events = events;
401 } 556 }
402 557
403 fdchangecnt = 0; 558 fdchangecnt = 0;
404} 559}
405 560
406static void 561void inline_size
407fd_change (EV_P_ int fd) 562fd_change (EV_P_ int fd, int flags)
408{ 563{
409 if (anfds [fd].reify) 564 unsigned char reify = anfds [fd].reify;
410 return;
411
412 anfds [fd].reify = 1; 565 anfds [fd].reify |= flags | 1;
413 566
567 if (expect_true (!reify))
568 {
414 ++fdchangecnt; 569 ++fdchangecnt;
415 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void)); 570 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
416 fdchanges [fdchangecnt - 1] = fd; 571 fdchanges [fdchangecnt - 1] = fd;
572 }
417} 573}
418 574
419static void 575void inline_speed
420fd_kill (EV_P_ int fd) 576fd_kill (EV_P_ int fd)
421{ 577{
422 struct ev_io *w; 578 ev_io *w;
423 579
424 while ((w = (struct ev_io *)anfds [fd].head)) 580 while ((w = (ev_io *)anfds [fd].head))
425 { 581 {
426 ev_io_stop (EV_A_ w); 582 ev_io_stop (EV_A_ w);
427 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 583 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
428 } 584 }
429} 585}
430 586
431static int 587int inline_size
432fd_valid (int fd) 588fd_valid (int fd)
433{ 589{
434#ifdef WIN32 590#ifdef _WIN32
435 return !!win32_get_osfhandle (fd); 591 return _get_osfhandle (fd) != -1;
436#else 592#else
437 return fcntl (fd, F_GETFD) != -1; 593 return fcntl (fd, F_GETFD) != -1;
438#endif 594#endif
439} 595}
440 596
441/* called on EBADF to verify fds */ 597/* called on EBADF to verify fds */
442static void 598static void noinline
443fd_ebadf (EV_P) 599fd_ebadf (EV_P)
444{ 600{
445 int fd; 601 int fd;
446 602
447 for (fd = 0; fd < anfdmax; ++fd) 603 for (fd = 0; fd < anfdmax; ++fd)
… …
449 if (!fd_valid (fd) == -1 && errno == EBADF) 605 if (!fd_valid (fd) == -1 && errno == EBADF)
450 fd_kill (EV_A_ fd); 606 fd_kill (EV_A_ fd);
451} 607}
452 608
453/* called on ENOMEM in select/poll to kill some fds and retry */ 609/* called on ENOMEM in select/poll to kill some fds and retry */
454static void 610static void noinline
455fd_enomem (EV_P) 611fd_enomem (EV_P)
456{ 612{
457 int fd; 613 int fd;
458 614
459 for (fd = anfdmax; fd--; ) 615 for (fd = anfdmax; fd--; )
… …
462 fd_kill (EV_A_ fd); 618 fd_kill (EV_A_ fd);
463 return; 619 return;
464 } 620 }
465} 621}
466 622
467/* usually called after fork if method needs to re-arm all fds from scratch */ 623/* usually called after fork if backend needs to re-arm all fds from scratch */
468static void 624static void noinline
469fd_rearm_all (EV_P) 625fd_rearm_all (EV_P)
470{ 626{
471 int fd; 627 int fd;
472 628
473 /* this should be highly optimised to not do anything but set a flag */
474 for (fd = 0; fd < anfdmax; ++fd) 629 for (fd = 0; fd < anfdmax; ++fd)
475 if (anfds [fd].events) 630 if (anfds [fd].events)
476 { 631 {
477 anfds [fd].events = 0; 632 anfds [fd].events = 0;
478 fd_change (EV_A_ fd); 633 fd_change (EV_A_ fd, EV_IOFDSET);
479 } 634 }
480} 635}
481 636
482/*****************************************************************************/ 637/*****************************************************************************/
483 638
484static void 639void inline_speed
485upheap (WT *heap, int k) 640upheap (WT *heap, int k)
486{ 641{
487 WT w = heap [k]; 642 WT w = heap [k];
488 643
489 while (k && heap [k >> 1]->at > w->at) 644 while (k)
490 { 645 {
646 int p = (k - 1) >> 1;
647
648 if (heap [p]->at <= w->at)
649 break;
650
491 heap [k] = heap [k >> 1]; 651 heap [k] = heap [p];
492 ((W)heap [k])->active = k + 1; 652 ((W)heap [k])->active = k + 1;
493 k >>= 1; 653 k = p;
494 } 654 }
495 655
496 heap [k] = w; 656 heap [k] = w;
497 ((W)heap [k])->active = k + 1; 657 ((W)heap [k])->active = k + 1;
498
499} 658}
500 659
501static void 660void inline_speed
502downheap (WT *heap, int N, int k) 661downheap (WT *heap, int N, int k)
503{ 662{
504 WT w = heap [k]; 663 WT w = heap [k];
505 664
506 while (k < (N >> 1)) 665 for (;;)
507 { 666 {
508 int j = k << 1; 667 int c = (k << 1) + 1;
509 668
510 if (j + 1 < N && heap [j]->at > heap [j + 1]->at) 669 if (c >= N)
511 ++j;
512
513 if (w->at <= heap [j]->at)
514 break; 670 break;
515 671
672 c += c + 1 < N && heap [c]->at > heap [c + 1]->at
673 ? 1 : 0;
674
675 if (w->at <= heap [c]->at)
676 break;
677
516 heap [k] = heap [j]; 678 heap [k] = heap [c];
517 ((W)heap [k])->active = k + 1; 679 ((W)heap [k])->active = k + 1;
680
518 k = j; 681 k = c;
519 } 682 }
520 683
521 heap [k] = w; 684 heap [k] = w;
522 ((W)heap [k])->active = k + 1; 685 ((W)heap [k])->active = k + 1;
523} 686}
524 687
525inline void 688void inline_size
526adjustheap (WT *heap, int N, int k, ev_tstamp at) 689adjustheap (WT *heap, int N, int k)
527{ 690{
528 ev_tstamp old_at = heap [k]->at; 691 upheap (heap, k);
529 heap [k]->at = at;
530
531 if (old_at < at)
532 downheap (heap, N, k); 692 downheap (heap, N, k);
533 else
534 upheap (heap, k);
535} 693}
536 694
537/*****************************************************************************/ 695/*****************************************************************************/
538 696
539typedef struct 697typedef struct
… …
545static ANSIG *signals; 703static ANSIG *signals;
546static int signalmax; 704static int signalmax;
547 705
548static int sigpipe [2]; 706static int sigpipe [2];
549static sig_atomic_t volatile gotsig; 707static sig_atomic_t volatile gotsig;
550static struct ev_io sigev; 708static ev_io sigev;
551 709
552static void 710void inline_size
553signals_init (ANSIG *base, int count) 711signals_init (ANSIG *base, int count)
554{ 712{
555 while (count--) 713 while (count--)
556 { 714 {
557 base->head = 0; 715 base->head = 0;
… …
562} 720}
563 721
564static void 722static void
565sighandler (int signum) 723sighandler (int signum)
566{ 724{
567#if WIN32 725#if _WIN32
568 signal (signum, sighandler); 726 signal (signum, sighandler);
569#endif 727#endif
570 728
571 signals [signum - 1].gotsig = 1; 729 signals [signum - 1].gotsig = 1;
572 730
573 if (!gotsig) 731 if (!gotsig)
574 { 732 {
575 int old_errno = errno; 733 int old_errno = errno;
576 gotsig = 1; 734 gotsig = 1;
577#ifdef WIN32
578 send (sigpipe [1], &signum, 1, MSG_DONTWAIT);
579#else
580 write (sigpipe [1], &signum, 1); 735 write (sigpipe [1], &signum, 1);
581#endif
582 errno = old_errno; 736 errno = old_errno;
583 } 737 }
584} 738}
585 739
586void 740void noinline
587ev_feed_signal_event (EV_P_ int signum) 741ev_feed_signal_event (EV_P_ int signum)
588{ 742{
589 WL w; 743 WL w;
590 744
591#if EV_MULTIPLICITY 745#if EV_MULTIPLICITY
592 assert (("feeding signal events is only supported in the default loop", loop == default_loop)); 746 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
593#endif 747#endif
594 748
595 --signum; 749 --signum;
596 750
597 if (signum < 0 || signum >= signalmax) 751 if (signum < 0 || signum >= signalmax)
… …
602 for (w = signals [signum].head; w; w = w->next) 756 for (w = signals [signum].head; w; w = w->next)
603 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 757 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
604} 758}
605 759
606static void 760static void
607sigcb (EV_P_ struct ev_io *iow, int revents) 761sigcb (EV_P_ ev_io *iow, int revents)
608{ 762{
609 int signum; 763 int signum;
610 764
611#ifdef WIN32
612 recv (sigpipe [0], &revents, 1, MSG_DONTWAIT);
613#else
614 read (sigpipe [0], &revents, 1); 765 read (sigpipe [0], &revents, 1);
615#endif
616 gotsig = 0; 766 gotsig = 0;
617 767
618 for (signum = signalmax; signum--; ) 768 for (signum = signalmax; signum--; )
619 if (signals [signum].gotsig) 769 if (signals [signum].gotsig)
620 ev_feed_signal_event (EV_A_ signum + 1); 770 ev_feed_signal_event (EV_A_ signum + 1);
621} 771}
622 772
623static void 773void inline_speed
774fd_intern (int fd)
775{
776#ifdef _WIN32
777 int arg = 1;
778 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
779#else
780 fcntl (fd, F_SETFD, FD_CLOEXEC);
781 fcntl (fd, F_SETFL, O_NONBLOCK);
782#endif
783}
784
785static void noinline
624siginit (EV_P) 786siginit (EV_P)
625{ 787{
626#ifndef WIN32 788 fd_intern (sigpipe [0]);
627 fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC); 789 fd_intern (sigpipe [1]);
628 fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
629
630 /* rather than sort out wether we really need nb, set it */
631 fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
632 fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
633#endif
634 790
635 ev_io_set (&sigev, sigpipe [0], EV_READ); 791 ev_io_set (&sigev, sigpipe [0], EV_READ);
636 ev_io_start (EV_A_ &sigev); 792 ev_io_start (EV_A_ &sigev);
637 ev_unref (EV_A); /* child watcher should not keep loop alive */ 793 ev_unref (EV_A); /* child watcher should not keep loop alive */
638} 794}
639 795
640/*****************************************************************************/ 796/*****************************************************************************/
641 797
642static struct ev_child *childs [PID_HASHSIZE]; 798static WL childs [EV_PID_HASHSIZE];
643 799
644#ifndef WIN32 800#ifndef _WIN32
645 801
646static struct ev_signal childev; 802static ev_signal childev;
803
804void inline_speed
805child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
806{
807 ev_child *w;
808
809 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
810 if (w->pid == pid || !w->pid)
811 {
812 ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */
813 w->rpid = pid;
814 w->rstatus = status;
815 ev_feed_event (EV_A_ (W)w, EV_CHILD);
816 }
817}
647 818
648#ifndef WCONTINUED 819#ifndef WCONTINUED
649# define WCONTINUED 0 820# define WCONTINUED 0
650#endif 821#endif
651 822
652static void 823static void
653child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
654{
655 struct ev_child *w;
656
657 for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
658 if (w->pid == pid || !w->pid)
659 {
660 ev_priority (w) = ev_priority (sw); /* need to do it *now* */
661 w->rpid = pid;
662 w->rstatus = status;
663 ev_feed_event (EV_A_ (W)w, EV_CHILD);
664 }
665}
666
667static void
668childcb (EV_P_ struct ev_signal *sw, int revents) 824childcb (EV_P_ ev_signal *sw, int revents)
669{ 825{
670 int pid, status; 826 int pid, status;
671 827
828 /* some systems define WCONTINUED but then fail to support it (linux 2.4) */
672 if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) 829 if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
673 { 830 if (!WCONTINUED
831 || errno != EINVAL
832 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
833 return;
834
674 /* make sure we are called again until all childs have been reaped */ 835 /* make sure we are called again until all childs have been reaped */
836 /* we need to do it this way so that the callback gets called before we continue */
675 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 837 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
676 838
677 child_reap (EV_A_ sw, pid, pid, status); 839 child_reap (EV_A_ sw, pid, pid, status);
840 if (EV_PID_HASHSIZE > 1)
678 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */ 841 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
679 }
680} 842}
681 843
682#endif 844#endif
683 845
684/*****************************************************************************/ 846/*****************************************************************************/
685 847
848#if EV_USE_PORT
849# include "ev_port.c"
850#endif
686#if EV_USE_KQUEUE 851#if EV_USE_KQUEUE
687# include "ev_kqueue.c" 852# include "ev_kqueue.c"
688#endif 853#endif
689#if EV_USE_EPOLL 854#if EV_USE_EPOLL
690# include "ev_epoll.c" 855# include "ev_epoll.c"
… …
707{ 872{
708 return EV_VERSION_MINOR; 873 return EV_VERSION_MINOR;
709} 874}
710 875
711/* return true if we are running with elevated privileges and should ignore env variables */ 876/* return true if we are running with elevated privileges and should ignore env variables */
712static int 877int inline_size
713enable_secure (void) 878enable_secure (void)
714{ 879{
715#ifdef WIN32 880#ifdef _WIN32
716 return 0; 881 return 0;
717#else 882#else
718 return getuid () != geteuid () 883 return getuid () != geteuid ()
719 || getgid () != getegid (); 884 || getgid () != getegid ();
720#endif 885#endif
721} 886}
722 887
723int 888unsigned int
724ev_method (EV_P) 889ev_supported_backends (void)
725{ 890{
726 return method; 891 unsigned int flags = 0;
727}
728 892
729static void 893 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
730loop_init (EV_P_ int methods) 894 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
895 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
896 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
897 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
898
899 return flags;
900}
901
902unsigned int
903ev_recommended_backends (void)
731{ 904{
732 if (!method) 905 unsigned int flags = ev_supported_backends ();
906
907#ifndef __NetBSD__
908 /* kqueue is borked on everything but netbsd apparently */
909 /* it usually doesn't work correctly on anything but sockets and pipes */
910 flags &= ~EVBACKEND_KQUEUE;
911#endif
912#ifdef __APPLE__
913 // flags &= ~EVBACKEND_KQUEUE; for documentation
914 flags &= ~EVBACKEND_POLL;
915#endif
916
917 return flags;
918}
919
920unsigned int
921ev_embeddable_backends (void)
922{
923 return EVBACKEND_EPOLL
924 | EVBACKEND_KQUEUE
925 | EVBACKEND_PORT;
926}
927
928unsigned int
929ev_backend (EV_P)
930{
931 return backend;
932}
933
934unsigned int
935ev_loop_count (EV_P)
936{
937 return loop_count;
938}
939
940static void noinline
941loop_init (EV_P_ unsigned int flags)
942{
943 if (!backend)
733 { 944 {
734#if EV_USE_MONOTONIC 945#if EV_USE_MONOTONIC
735 { 946 {
736 struct timespec ts; 947 struct timespec ts;
737 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 948 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
… …
742 ev_rt_now = ev_time (); 953 ev_rt_now = ev_time ();
743 mn_now = get_clock (); 954 mn_now = get_clock ();
744 now_floor = mn_now; 955 now_floor = mn_now;
745 rtmn_diff = ev_rt_now - mn_now; 956 rtmn_diff = ev_rt_now - mn_now;
746 957
747 if (methods == EVMETHOD_AUTO) 958 /* pid check not overridable via env */
748 if (!enable_secure () && getenv ("LIBEV_METHODS")) 959#ifndef _WIN32
960 if (flags & EVFLAG_FORKCHECK)
961 curpid = getpid ();
962#endif
963
964 if (!(flags & EVFLAG_NOENV)
965 && !enable_secure ()
966 && getenv ("LIBEV_FLAGS"))
749 methods = atoi (getenv ("LIBEV_METHODS")); 967 flags = atoi (getenv ("LIBEV_FLAGS"));
750 else
751 methods = EVMETHOD_ANY;
752 968
753 method = 0; 969 if (!(flags & 0x0000ffffUL))
970 flags |= ev_recommended_backends ();
971
972 backend = 0;
973 backend_fd = -1;
754#if EV_USE_WIN32 974#if EV_USE_INOTIFY
755 if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods); 975 fs_fd = -2;
976#endif
977
978#if EV_USE_PORT
979 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
756#endif 980#endif
757#if EV_USE_KQUEUE 981#if EV_USE_KQUEUE
758 if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods); 982 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
759#endif 983#endif
760#if EV_USE_EPOLL 984#if EV_USE_EPOLL
761 if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods); 985 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
762#endif 986#endif
763#if EV_USE_POLL 987#if EV_USE_POLL
764 if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods); 988 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
765#endif 989#endif
766#if EV_USE_SELECT 990#if EV_USE_SELECT
767 if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods); 991 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
768#endif 992#endif
769 993
770 ev_init (&sigev, sigcb); 994 ev_init (&sigev, sigcb);
771 ev_set_priority (&sigev, EV_MAXPRI); 995 ev_set_priority (&sigev, EV_MAXPRI);
772 } 996 }
773} 997}
774 998
775void 999static void noinline
776loop_destroy (EV_P) 1000loop_destroy (EV_P)
777{ 1001{
778 int i; 1002 int i;
779 1003
780#if EV_USE_WIN32 1004#if EV_USE_INOTIFY
781 if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A); 1005 if (fs_fd >= 0)
1006 close (fs_fd);
1007#endif
1008
1009 if (backend_fd >= 0)
1010 close (backend_fd);
1011
1012#if EV_USE_PORT
1013 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
782#endif 1014#endif
783#if EV_USE_KQUEUE 1015#if EV_USE_KQUEUE
784 if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A); 1016 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
785#endif 1017#endif
786#if EV_USE_EPOLL 1018#if EV_USE_EPOLL
787 if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A); 1019 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
788#endif 1020#endif
789#if EV_USE_POLL 1021#if EV_USE_POLL
790 if (method == EVMETHOD_POLL ) poll_destroy (EV_A); 1022 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
791#endif 1023#endif
792#if EV_USE_SELECT 1024#if EV_USE_SELECT
793 if (method == EVMETHOD_SELECT) select_destroy (EV_A); 1025 if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
794#endif 1026#endif
795 1027
796 for (i = NUMPRI; i--; ) 1028 for (i = NUMPRI; i--; )
1029 {
797 array_free (pending, [i]); 1030 array_free (pending, [i]);
1031#if EV_IDLE_ENABLE
1032 array_free (idle, [i]);
1033#endif
1034 }
798 1035
799 /* have to use the microsoft-never-gets-it-right macro */ 1036 /* have to use the microsoft-never-gets-it-right macro */
800 array_free_microshit (fdchange); 1037 array_free (fdchange, EMPTY);
801 array_free_microshit (timer); 1038 array_free (timer, EMPTY);
802 array_free_microshit (periodic); 1039#if EV_PERIODIC_ENABLE
803 array_free_microshit (idle); 1040 array_free (periodic, EMPTY);
804 array_free_microshit (prepare); 1041#endif
805 array_free_microshit (check); 1042 array_free (prepare, EMPTY);
1043 array_free (check, EMPTY);
806 1044
807 method = 0; 1045 backend = 0;
808} 1046}
809 1047
810static void 1048void inline_size infy_fork (EV_P);
1049
1050void inline_size
811loop_fork (EV_P) 1051loop_fork (EV_P)
812{ 1052{
1053#if EV_USE_PORT
1054 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1055#endif
1056#if EV_USE_KQUEUE
1057 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
1058#endif
813#if EV_USE_EPOLL 1059#if EV_USE_EPOLL
814 if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A); 1060 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
815#endif 1061#endif
816#if EV_USE_KQUEUE 1062#if EV_USE_INOTIFY
817 if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A); 1063 infy_fork (EV_A);
818#endif 1064#endif
819 1065
820 if (ev_is_active (&sigev)) 1066 if (ev_is_active (&sigev))
821 { 1067 {
822 /* default loop */ 1068 /* default loop */
… …
835 postfork = 0; 1081 postfork = 0;
836} 1082}
837 1083
838#if EV_MULTIPLICITY 1084#if EV_MULTIPLICITY
839struct ev_loop * 1085struct ev_loop *
840ev_loop_new (int methods) 1086ev_loop_new (unsigned int flags)
841{ 1087{
842 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 1088 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
843 1089
844 memset (loop, 0, sizeof (struct ev_loop)); 1090 memset (loop, 0, sizeof (struct ev_loop));
845 1091
846 loop_init (EV_A_ methods); 1092 loop_init (EV_A_ flags);
847 1093
848 if (ev_method (EV_A)) 1094 if (ev_backend (EV_A))
849 return loop; 1095 return loop;
850 1096
851 return 0; 1097 return 0;
852} 1098}
853 1099
… …
866 1112
867#endif 1113#endif
868 1114
869#if EV_MULTIPLICITY 1115#if EV_MULTIPLICITY
870struct ev_loop * 1116struct ev_loop *
1117ev_default_loop_init (unsigned int flags)
871#else 1118#else
872int 1119int
1120ev_default_loop (unsigned int flags)
873#endif 1121#endif
874ev_default_loop (int methods)
875{ 1122{
876 if (sigpipe [0] == sigpipe [1]) 1123 if (sigpipe [0] == sigpipe [1])
877 if (pipe (sigpipe)) 1124 if (pipe (sigpipe))
878 return 0; 1125 return 0;
879 1126
880 if (!default_loop) 1127 if (!ev_default_loop_ptr)
881 { 1128 {
882#if EV_MULTIPLICITY 1129#if EV_MULTIPLICITY
883 struct ev_loop *loop = default_loop = &default_loop_struct; 1130 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
884#else 1131#else
885 default_loop = 1; 1132 ev_default_loop_ptr = 1;
886#endif 1133#endif
887 1134
888 loop_init (EV_A_ methods); 1135 loop_init (EV_A_ flags);
889 1136
890 if (ev_method (EV_A)) 1137 if (ev_backend (EV_A))
891 { 1138 {
892 siginit (EV_A); 1139 siginit (EV_A);
893 1140
894#ifndef WIN32 1141#ifndef _WIN32
895 ev_signal_init (&childev, childcb, SIGCHLD); 1142 ev_signal_init (&childev, childcb, SIGCHLD);
896 ev_set_priority (&childev, EV_MAXPRI); 1143 ev_set_priority (&childev, EV_MAXPRI);
897 ev_signal_start (EV_A_ &childev); 1144 ev_signal_start (EV_A_ &childev);
898 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1145 ev_unref (EV_A); /* child watcher should not keep loop alive */
899#endif 1146#endif
900 } 1147 }
901 else 1148 else
902 default_loop = 0; 1149 ev_default_loop_ptr = 0;
903 } 1150 }
904 1151
905 return default_loop; 1152 return ev_default_loop_ptr;
906} 1153}
907 1154
908void 1155void
909ev_default_destroy (void) 1156ev_default_destroy (void)
910{ 1157{
911#if EV_MULTIPLICITY 1158#if EV_MULTIPLICITY
912 struct ev_loop *loop = default_loop; 1159 struct ev_loop *loop = ev_default_loop_ptr;
913#endif 1160#endif
914 1161
915#ifndef WIN32 1162#ifndef _WIN32
916 ev_ref (EV_A); /* child watcher */ 1163 ev_ref (EV_A); /* child watcher */
917 ev_signal_stop (EV_A_ &childev); 1164 ev_signal_stop (EV_A_ &childev);
918#endif 1165#endif
919 1166
920 ev_ref (EV_A); /* signal watcher */ 1167 ev_ref (EV_A); /* signal watcher */
… …
928 1175
929void 1176void
930ev_default_fork (void) 1177ev_default_fork (void)
931{ 1178{
932#if EV_MULTIPLICITY 1179#if EV_MULTIPLICITY
933 struct ev_loop *loop = default_loop; 1180 struct ev_loop *loop = ev_default_loop_ptr;
934#endif 1181#endif
935 1182
936 if (method) 1183 if (backend)
937 postfork = 1; 1184 postfork = 1;
938} 1185}
939 1186
940/*****************************************************************************/ 1187/*****************************************************************************/
941 1188
942static int 1189void
943any_pending (EV_P) 1190ev_invoke (EV_P_ void *w, int revents)
944{ 1191{
945 int pri; 1192 EV_CB_INVOKE ((W)w, revents);
946
947 for (pri = NUMPRI; pri--; )
948 if (pendingcnt [pri])
949 return 1;
950
951 return 0;
952} 1193}
953 1194
954static void 1195void inline_speed
955call_pending (EV_P) 1196call_pending (EV_P)
956{ 1197{
957 int pri; 1198 int pri;
958 1199
959 for (pri = NUMPRI; pri--; ) 1200 for (pri = NUMPRI; pri--; )
960 while (pendingcnt [pri]) 1201 while (pendingcnt [pri])
961 { 1202 {
962 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 1203 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
963 1204
964 if (p->w) 1205 if (expect_true (p->w))
965 { 1206 {
1207 /*assert (("non-pending watcher on pending list", p->w->pending));*/
1208
966 p->w->pending = 0; 1209 p->w->pending = 0;
967 EV_CB_INVOKE (p->w, p->events); 1210 EV_CB_INVOKE (p->w, p->events);
968 } 1211 }
969 } 1212 }
970} 1213}
971 1214
972static void 1215void inline_size
973timers_reify (EV_P) 1216timers_reify (EV_P)
974{ 1217{
975 while (timercnt && ((WT)timers [0])->at <= mn_now) 1218 while (timercnt && ((WT)timers [0])->at <= mn_now)
976 { 1219 {
977 struct ev_timer *w = timers [0]; 1220 ev_timer *w = (ev_timer *)timers [0];
978 1221
979 assert (("inactive timer on timer heap detected", ev_is_active (w))); 1222 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
980 1223
981 /* first reschedule or stop timer */ 1224 /* first reschedule or stop timer */
982 if (w->repeat) 1225 if (w->repeat)
983 { 1226 {
984 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 1227 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1228
985 ((WT)w)->at = mn_now + w->repeat; 1229 ((WT)w)->at += w->repeat;
1230 if (((WT)w)->at < mn_now)
1231 ((WT)w)->at = mn_now;
1232
986 downheap ((WT *)timers, timercnt, 0); 1233 downheap (timers, timercnt, 0);
987 } 1234 }
988 else 1235 else
989 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ 1236 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
990 1237
991 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); 1238 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
992 } 1239 }
993} 1240}
994 1241
995static void 1242#if EV_PERIODIC_ENABLE
1243void inline_size
996periodics_reify (EV_P) 1244periodics_reify (EV_P)
997{ 1245{
998 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now) 1246 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
999 { 1247 {
1000 struct ev_periodic *w = periodics [0]; 1248 ev_periodic *w = (ev_periodic *)periodics [0];
1001 1249
1002 assert (("inactive timer on periodic heap detected", ev_is_active (w))); 1250 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1003 1251
1004 /* first reschedule or stop timer */ 1252 /* first reschedule or stop timer */
1005 if (w->reschedule_cb) 1253 if (w->reschedule_cb)
1006 { 1254 {
1007 ev_tstamp at = ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001); 1255 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1008
1009 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now)); 1256 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1010 downheap ((WT *)periodics, periodiccnt, 0); 1257 downheap (periodics, periodiccnt, 0);
1011 } 1258 }
1012 else if (w->interval) 1259 else if (w->interval)
1013 { 1260 {
1014 ((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval; 1261 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1262 if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
1015 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now)); 1263 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1016 downheap ((WT *)periodics, periodiccnt, 0); 1264 downheap (periodics, periodiccnt, 0);
1017 } 1265 }
1018 else 1266 else
1019 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 1267 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1020 1268
1021 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 1269 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1022 } 1270 }
1023} 1271}
1024 1272
1025static void 1273static void noinline
1026periodics_reschedule (EV_P) 1274periodics_reschedule (EV_P)
1027{ 1275{
1028 int i; 1276 int i;
1029 1277
1030 /* adjust periodics after time jump */ 1278 /* adjust periodics after time jump */
1031 for (i = 0; i < periodiccnt; ++i) 1279 for (i = 0; i < periodiccnt; ++i)
1032 { 1280 {
1033 struct ev_periodic *w = periodics [i]; 1281 ev_periodic *w = (ev_periodic *)periodics [i];
1034 1282
1035 if (w->reschedule_cb) 1283 if (w->reschedule_cb)
1036 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 1284 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1037 else if (w->interval) 1285 else if (w->interval)
1038 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval; 1286 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1039 } 1287 }
1040 1288
1041 /* now rebuild the heap */ 1289 /* now rebuild the heap */
1042 for (i = periodiccnt >> 1; i--; ) 1290 for (i = periodiccnt >> 1; i--; )
1043 downheap ((WT *)periodics, periodiccnt, i); 1291 downheap (periodics, periodiccnt, i);
1044} 1292}
1293#endif
1045 1294
1046inline int 1295#if EV_IDLE_ENABLE
1047time_update_monotonic (EV_P) 1296void inline_size
1297idle_reify (EV_P)
1048{ 1298{
1299 if (expect_false (idleall))
1300 {
1301 int pri;
1302
1303 for (pri = NUMPRI; pri--; )
1304 {
1305 if (pendingcnt [pri])
1306 break;
1307
1308 if (idlecnt [pri])
1309 {
1310 queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
1311 break;
1312 }
1313 }
1314 }
1315}
1316#endif
1317
1318void inline_speed
1319time_update (EV_P_ ev_tstamp max_block)
1320{
1321 int i;
1322
1323#if EV_USE_MONOTONIC
1324 if (expect_true (have_monotonic))
1325 {
1326 ev_tstamp odiff = rtmn_diff;
1327
1049 mn_now = get_clock (); 1328 mn_now = get_clock ();
1050 1329
1330 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
1331 /* interpolate in the meantime */
1051 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 1332 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1052 { 1333 {
1053 ev_rt_now = rtmn_diff + mn_now; 1334 ev_rt_now = rtmn_diff + mn_now;
1054 return 0; 1335 return;
1055 } 1336 }
1056 else 1337
1057 {
1058 now_floor = mn_now; 1338 now_floor = mn_now;
1059 ev_rt_now = ev_time (); 1339 ev_rt_now = ev_time ();
1060 return 1;
1061 }
1062}
1063 1340
1064static void 1341 /* loop a few times, before making important decisions.
1065time_update (EV_P) 1342 * on the choice of "4": one iteration isn't enough,
1066{ 1343 * in case we get preempted during the calls to
1067 int i; 1344 * ev_time and get_clock. a second call is almost guaranteed
1068 1345 * to succeed in that case, though. and looping a few more times
1069#if EV_USE_MONOTONIC 1346 * doesn't hurt either as we only do this on time-jumps or
1070 if (expect_true (have_monotonic)) 1347 * in the unlikely event of having been preempted here.
1071 { 1348 */
1072 if (time_update_monotonic (EV_A)) 1349 for (i = 4; --i; )
1073 { 1350 {
1074 ev_tstamp odiff = rtmn_diff;
1075
1076 for (i = 4; --i; ) /* loop a few times, before making important decisions */
1077 {
1078 rtmn_diff = ev_rt_now - mn_now; 1351 rtmn_diff = ev_rt_now - mn_now;
1079 1352
1080 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) 1353 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1081 return; /* all is well */ 1354 return; /* all is well */
1082 1355
1083 ev_rt_now = ev_time (); 1356 ev_rt_now = ev_time ();
1084 mn_now = get_clock (); 1357 mn_now = get_clock ();
1085 now_floor = mn_now; 1358 now_floor = mn_now;
1086 } 1359 }
1087 1360
1361# if EV_PERIODIC_ENABLE
1362 periodics_reschedule (EV_A);
1363# endif
1364 /* no timer adjustment, as the monotonic clock doesn't jump */
1365 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1366 }
1367 else
1368#endif
1369 {
1370 ev_rt_now = ev_time ();
1371
1372 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1373 {
1374#if EV_PERIODIC_ENABLE
1088 periodics_reschedule (EV_A); 1375 periodics_reschedule (EV_A);
1089 /* no timer adjustment, as the monotonic clock doesn't jump */
1090 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1091 }
1092 }
1093 else
1094#endif 1376#endif
1095 {
1096 ev_rt_now = ev_time ();
1097
1098 if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
1099 {
1100 periodics_reschedule (EV_A);
1101
1102 /* adjust timers. this is easy, as the offset is the same for all */ 1377 /* adjust timers. this is easy, as the offset is the same for all of them */
1103 for (i = 0; i < timercnt; ++i) 1378 for (i = 0; i < timercnt; ++i)
1104 ((WT)timers [i])->at += ev_rt_now - mn_now; 1379 ((WT)timers [i])->at += ev_rt_now - mn_now;
1105 } 1380 }
1106 1381
1107 mn_now = ev_rt_now; 1382 mn_now = ev_rt_now;
… …
1123static int loop_done; 1398static int loop_done;
1124 1399
1125void 1400void
1126ev_loop (EV_P_ int flags) 1401ev_loop (EV_P_ int flags)
1127{ 1402{
1128 double block;
1129 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0; 1403 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
1404 ? EVUNLOOP_ONE
1405 : EVUNLOOP_CANCEL;
1406
1407 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
1130 1408
1131 do 1409 do
1132 { 1410 {
1411#ifndef _WIN32
1412 if (expect_false (curpid)) /* penalise the forking check even more */
1413 if (expect_false (getpid () != curpid))
1414 {
1415 curpid = getpid ();
1416 postfork = 1;
1417 }
1418#endif
1419
1420#if EV_FORK_ENABLE
1421 /* we might have forked, so queue fork handlers */
1422 if (expect_false (postfork))
1423 if (forkcnt)
1424 {
1425 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1426 call_pending (EV_A);
1427 }
1428#endif
1429
1133 /* queue check watchers (and execute them) */ 1430 /* queue prepare watchers (and execute them) */
1134 if (expect_false (preparecnt)) 1431 if (expect_false (preparecnt))
1135 { 1432 {
1136 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 1433 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1137 call_pending (EV_A); 1434 call_pending (EV_A);
1138 } 1435 }
1139 1436
1437 if (expect_false (!activecnt))
1438 break;
1439
1140 /* we might have forked, so reify kernel state if necessary */ 1440 /* we might have forked, so reify kernel state if necessary */
1141 if (expect_false (postfork)) 1441 if (expect_false (postfork))
1142 loop_fork (EV_A); 1442 loop_fork (EV_A);
1143 1443
1144 /* update fd-related kernel structures */ 1444 /* update fd-related kernel structures */
1145 fd_reify (EV_A); 1445 fd_reify (EV_A);
1146 1446
1147 /* calculate blocking time */ 1447 /* calculate blocking time */
1448 {
1449 ev_tstamp block;
1148 1450
1149 /* we only need this for !monotonic clock or timers, but as we basically 1451 if (expect_false (flags & EVLOOP_NONBLOCK || idleall || !activecnt))
1150 always have timers, we just calculate it always */ 1452 block = 0.; /* do not block at all */
1151#if EV_USE_MONOTONIC
1152 if (expect_true (have_monotonic))
1153 time_update_monotonic (EV_A);
1154 else 1453 else
1155#endif
1156 { 1454 {
1157 ev_rt_now = ev_time (); 1455 /* update time to cancel out callback processing overhead */
1158 mn_now = ev_rt_now; 1456 time_update (EV_A_ 1e100);
1159 }
1160 1457
1161 if (flags & EVLOOP_NONBLOCK || idlecnt)
1162 block = 0.;
1163 else
1164 {
1165 block = MAX_BLOCKTIME; 1458 block = MAX_BLOCKTIME;
1166 1459
1167 if (timercnt) 1460 if (timercnt)
1168 { 1461 {
1169 ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge; 1462 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1170 if (block > to) block = to; 1463 if (block > to) block = to;
1171 } 1464 }
1172 1465
1466#if EV_PERIODIC_ENABLE
1173 if (periodiccnt) 1467 if (periodiccnt)
1174 { 1468 {
1175 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge; 1469 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1176 if (block > to) block = to; 1470 if (block > to) block = to;
1177 } 1471 }
1472#endif
1178 1473
1179 if (block < 0.) block = 0.; 1474 if (expect_false (block < 0.)) block = 0.;
1180 } 1475 }
1181 1476
1477 ++loop_count;
1182 method_poll (EV_A_ block); 1478 backend_poll (EV_A_ block);
1183 1479
1184 /* update ev_rt_now, do magic */ 1480 /* update ev_rt_now, do magic */
1185 time_update (EV_A); 1481 time_update (EV_A_ block);
1482 }
1186 1483
1187 /* queue pending timers and reschedule them */ 1484 /* queue pending timers and reschedule them */
1188 timers_reify (EV_A); /* relative timers called last */ 1485 timers_reify (EV_A); /* relative timers called last */
1486#if EV_PERIODIC_ENABLE
1189 periodics_reify (EV_A); /* absolute timers called first */ 1487 periodics_reify (EV_A); /* absolute timers called first */
1488#endif
1190 1489
1490#if EV_IDLE_ENABLE
1191 /* queue idle watchers unless io or timers are pending */ 1491 /* queue idle watchers unless other events are pending */
1192 if (idlecnt && !any_pending (EV_A)) 1492 idle_reify (EV_A);
1193 queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); 1493#endif
1194 1494
1195 /* queue check watchers, to be executed first */ 1495 /* queue check watchers, to be executed first */
1196 if (checkcnt) 1496 if (expect_false (checkcnt))
1197 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 1497 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1198 1498
1199 call_pending (EV_A); 1499 call_pending (EV_A);
1500
1200 } 1501 }
1201 while (activecnt && !loop_done); 1502 while (expect_true (activecnt && !loop_done));
1202 1503
1203 if (loop_done != 2) 1504 if (loop_done == EVUNLOOP_ONE)
1204 loop_done = 0; 1505 loop_done = EVUNLOOP_CANCEL;
1205} 1506}
1206 1507
1207void 1508void
1208ev_unloop (EV_P_ int how) 1509ev_unloop (EV_P_ int how)
1209{ 1510{
1210 loop_done = how; 1511 loop_done = how;
1211} 1512}
1212 1513
1213/*****************************************************************************/ 1514/*****************************************************************************/
1214 1515
1215inline void 1516void inline_size
1216wlist_add (WL *head, WL elem) 1517wlist_add (WL *head, WL elem)
1217{ 1518{
1218 elem->next = *head; 1519 elem->next = *head;
1219 *head = elem; 1520 *head = elem;
1220} 1521}
1221 1522
1222inline void 1523void inline_size
1223wlist_del (WL *head, WL elem) 1524wlist_del (WL *head, WL elem)
1224{ 1525{
1225 while (*head) 1526 while (*head)
1226 { 1527 {
1227 if (*head == elem) 1528 if (*head == elem)
… …
1232 1533
1233 head = &(*head)->next; 1534 head = &(*head)->next;
1234 } 1535 }
1235} 1536}
1236 1537
1237inline void 1538void inline_speed
1238ev_clear_pending (EV_P_ W w) 1539clear_pending (EV_P_ W w)
1239{ 1540{
1240 if (w->pending) 1541 if (w->pending)
1241 { 1542 {
1242 pendings [ABSPRI (w)][w->pending - 1].w = 0; 1543 pendings [ABSPRI (w)][w->pending - 1].w = 0;
1243 w->pending = 0; 1544 w->pending = 0;
1244 } 1545 }
1245} 1546}
1246 1547
1247inline void 1548int
1549ev_clear_pending (EV_P_ void *w)
1550{
1551 W w_ = (W)w;
1552 int pending = w_->pending;
1553
1554 if (expect_true (pending))
1555 {
1556 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
1557 w_->pending = 0;
1558 p->w = 0;
1559 return p->events;
1560 }
1561 else
1562 return 0;
1563}
1564
1565void inline_size
1566pri_adjust (EV_P_ W w)
1567{
1568 int pri = w->priority;
1569 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1570 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1571 w->priority = pri;
1572}
1573
1574void inline_speed
1248ev_start (EV_P_ W w, int active) 1575ev_start (EV_P_ W w, int active)
1249{ 1576{
1250 if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; 1577 pri_adjust (EV_A_ w);
1251 if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1252
1253 w->active = active; 1578 w->active = active;
1254 ev_ref (EV_A); 1579 ev_ref (EV_A);
1255} 1580}
1256 1581
1257inline void 1582void inline_size
1258ev_stop (EV_P_ W w) 1583ev_stop (EV_P_ W w)
1259{ 1584{
1260 ev_unref (EV_A); 1585 ev_unref (EV_A);
1261 w->active = 0; 1586 w->active = 0;
1262} 1587}
1263 1588
1264/*****************************************************************************/ 1589/*****************************************************************************/
1265 1590
1266void 1591void noinline
1267ev_io_start (EV_P_ struct ev_io *w) 1592ev_io_start (EV_P_ ev_io *w)
1268{ 1593{
1269 int fd = w->fd; 1594 int fd = w->fd;
1270 1595
1271 if (ev_is_active (w)) 1596 if (expect_false (ev_is_active (w)))
1272 return; 1597 return;
1273 1598
1274 assert (("ev_io_start called with negative fd", fd >= 0)); 1599 assert (("ev_io_start called with negative fd", fd >= 0));
1275 1600
1276 ev_start (EV_A_ (W)w, 1); 1601 ev_start (EV_A_ (W)w, 1);
1277 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 1602 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1278 wlist_add ((WL *)&anfds[fd].head, (WL)w); 1603 wlist_add (&anfds[fd].head, (WL)w);
1279 1604
1280 fd_change (EV_A_ fd); 1605 fd_change (EV_A_ fd, w->events & EV_IOFDSET);
1606 w->events &= ~ EV_IOFDSET;
1281} 1607}
1282 1608
1283void 1609void noinline
1284ev_io_stop (EV_P_ struct ev_io *w) 1610ev_io_stop (EV_P_ ev_io *w)
1285{ 1611{
1286 ev_clear_pending (EV_A_ (W)w); 1612 clear_pending (EV_A_ (W)w);
1287 if (!ev_is_active (w)) 1613 if (expect_false (!ev_is_active (w)))
1288 return; 1614 return;
1289 1615
1616 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1617
1290 wlist_del ((WL *)&anfds[w->fd].head, (WL)w); 1618 wlist_del (&anfds[w->fd].head, (WL)w);
1291 ev_stop (EV_A_ (W)w); 1619 ev_stop (EV_A_ (W)w);
1292 1620
1293 fd_change (EV_A_ w->fd); 1621 fd_change (EV_A_ w->fd, 0);
1294} 1622}
1295 1623
1296void 1624void noinline
1297ev_timer_start (EV_P_ struct ev_timer *w) 1625ev_timer_start (EV_P_ ev_timer *w)
1626{
1627 if (expect_false (ev_is_active (w)))
1628 return;
1629
1630 ((WT)w)->at += mn_now;
1631
1632 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1633
1634 ev_start (EV_A_ (W)w, ++timercnt);
1635 array_needsize (WT, timers, timermax, timercnt, EMPTY2);
1636 timers [timercnt - 1] = (WT)w;
1637 upheap (timers, timercnt - 1);
1638
1639 /*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
1640}
1641
1642void noinline
1643ev_timer_stop (EV_P_ ev_timer *w)
1644{
1645 clear_pending (EV_A_ (W)w);
1646 if (expect_false (!ev_is_active (w)))
1647 return;
1648
1649 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w));
1650
1651 {
1652 int active = ((W)w)->active;
1653
1654 if (expect_true (--active < --timercnt))
1655 {
1656 timers [active] = timers [timercnt];
1657 adjustheap (timers, timercnt, active);
1658 }
1659 }
1660
1661 ((WT)w)->at -= mn_now;
1662
1663 ev_stop (EV_A_ (W)w);
1664}
1665
1666void noinline
1667ev_timer_again (EV_P_ ev_timer *w)
1298{ 1668{
1299 if (ev_is_active (w)) 1669 if (ev_is_active (w))
1300 return;
1301
1302 ((WT)w)->at += mn_now;
1303
1304 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1305
1306 ev_start (EV_A_ (W)w, ++timercnt);
1307 array_needsize (struct ev_timer *, timers, timermax, timercnt, (void));
1308 timers [timercnt - 1] = w;
1309 upheap ((WT *)timers, timercnt - 1);
1310
1311 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1312}
1313
1314void
1315ev_timer_stop (EV_P_ struct ev_timer *w)
1316{
1317 ev_clear_pending (EV_A_ (W)w);
1318 if (!ev_is_active (w))
1319 return;
1320
1321 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1322
1323 if (((W)w)->active < timercnt--)
1324 {
1325 timers [((W)w)->active - 1] = timers [timercnt];
1326 downheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1327 }
1328
1329 ((WT)w)->at = w->repeat;
1330
1331 ev_stop (EV_A_ (W)w);
1332}
1333
1334void
1335ev_timer_again (EV_P_ struct ev_timer *w)
1336{
1337 if (ev_is_active (w))
1338 { 1670 {
1339 if (w->repeat) 1671 if (w->repeat)
1672 {
1673 ((WT)w)->at = mn_now + w->repeat;
1340 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1, mn_now + w->repeat); 1674 adjustheap (timers, timercnt, ((W)w)->active - 1);
1675 }
1341 else 1676 else
1342 ev_timer_stop (EV_A_ w); 1677 ev_timer_stop (EV_A_ w);
1343 } 1678 }
1344 else if (w->repeat) 1679 else if (w->repeat)
1680 {
1681 w->at = w->repeat;
1345 ev_timer_start (EV_A_ w); 1682 ev_timer_start (EV_A_ w);
1683 }
1346} 1684}
1347 1685
1348void 1686#if EV_PERIODIC_ENABLE
1687void noinline
1349ev_periodic_start (EV_P_ struct ev_periodic *w) 1688ev_periodic_start (EV_P_ ev_periodic *w)
1350{ 1689{
1351 if (ev_is_active (w)) 1690 if (expect_false (ev_is_active (w)))
1352 return; 1691 return;
1353 1692
1354 if (w->reschedule_cb) 1693 if (w->reschedule_cb)
1355 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 1694 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1356 else if (w->interval) 1695 else if (w->interval)
1357 { 1696 {
1358 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 1697 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1359 /* this formula differs from the one in periodic_reify because we do not always round up */ 1698 /* this formula differs from the one in periodic_reify because we do not always round up */
1360 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval; 1699 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1361 } 1700 }
1701 else
1702 ((WT)w)->at = w->offset;
1362 1703
1363 ev_start (EV_A_ (W)w, ++periodiccnt); 1704 ev_start (EV_A_ (W)w, ++periodiccnt);
1364 array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void)); 1705 array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2);
1365 periodics [periodiccnt - 1] = w; 1706 periodics [periodiccnt - 1] = (WT)w;
1366 upheap ((WT *)periodics, periodiccnt - 1); 1707 upheap (periodics, periodiccnt - 1);
1367 1708
1368 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1709 /*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
1369} 1710}
1370 1711
1371void 1712void noinline
1372ev_periodic_stop (EV_P_ struct ev_periodic *w) 1713ev_periodic_stop (EV_P_ ev_periodic *w)
1373{ 1714{
1374 ev_clear_pending (EV_A_ (W)w); 1715 clear_pending (EV_A_ (W)w);
1375 if (!ev_is_active (w)) 1716 if (expect_false (!ev_is_active (w)))
1376 return; 1717 return;
1377 1718
1378 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1719 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w));
1379 1720
1380 if (((W)w)->active < periodiccnt--) 1721 {
1722 int active = ((W)w)->active;
1723
1724 if (expect_true (--active < --periodiccnt))
1381 { 1725 {
1382 periodics [((W)w)->active - 1] = periodics [periodiccnt]; 1726 periodics [active] = periodics [periodiccnt];
1383 downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1); 1727 adjustheap (periodics, periodiccnt, active);
1384 } 1728 }
1729 }
1385 1730
1386 ev_stop (EV_A_ (W)w); 1731 ev_stop (EV_A_ (W)w);
1387} 1732}
1388 1733
1389void 1734void noinline
1390ev_periodic_again (EV_P_ struct ev_periodic *w) 1735ev_periodic_again (EV_P_ ev_periodic *w)
1391{ 1736{
1392 /* TODO: use adjustheap and recalculation */ 1737 /* TODO: use adjustheap and recalculation */
1393 ev_periodic_stop (EV_A_ w); 1738 ev_periodic_stop (EV_A_ w);
1394 ev_periodic_start (EV_A_ w); 1739 ev_periodic_start (EV_A_ w);
1395} 1740}
1396 1741#endif
1397void
1398ev_idle_start (EV_P_ struct ev_idle *w)
1399{
1400 if (ev_is_active (w))
1401 return;
1402
1403 ev_start (EV_A_ (W)w, ++idlecnt);
1404 array_needsize (struct ev_idle *, idles, idlemax, idlecnt, (void));
1405 idles [idlecnt - 1] = w;
1406}
1407
1408void
1409ev_idle_stop (EV_P_ struct ev_idle *w)
1410{
1411 ev_clear_pending (EV_A_ (W)w);
1412 if (ev_is_active (w))
1413 return;
1414
1415 idles [((W)w)->active - 1] = idles [--idlecnt];
1416 ev_stop (EV_A_ (W)w);
1417}
1418
1419void
1420ev_prepare_start (EV_P_ struct ev_prepare *w)
1421{
1422 if (ev_is_active (w))
1423 return;
1424
1425 ev_start (EV_A_ (W)w, ++preparecnt);
1426 array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, (void));
1427 prepares [preparecnt - 1] = w;
1428}
1429
1430void
1431ev_prepare_stop (EV_P_ struct ev_prepare *w)
1432{
1433 ev_clear_pending (EV_A_ (W)w);
1434 if (ev_is_active (w))
1435 return;
1436
1437 prepares [((W)w)->active - 1] = prepares [--preparecnt];
1438 ev_stop (EV_A_ (W)w);
1439}
1440
1441void
1442ev_check_start (EV_P_ struct ev_check *w)
1443{
1444 if (ev_is_active (w))
1445 return;
1446
1447 ev_start (EV_A_ (W)w, ++checkcnt);
1448 array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void));
1449 checks [checkcnt - 1] = w;
1450}
1451
1452void
1453ev_check_stop (EV_P_ struct ev_check *w)
1454{
1455 ev_clear_pending (EV_A_ (W)w);
1456 if (ev_is_active (w))
1457 return;
1458
1459 checks [((W)w)->active - 1] = checks [--checkcnt];
1460 ev_stop (EV_A_ (W)w);
1461}
1462 1742
1463#ifndef SA_RESTART 1743#ifndef SA_RESTART
1464# define SA_RESTART 0 1744# define SA_RESTART 0
1465#endif 1745#endif
1466 1746
1467void 1747void noinline
1468ev_signal_start (EV_P_ struct ev_signal *w) 1748ev_signal_start (EV_P_ ev_signal *w)
1469{ 1749{
1470#if EV_MULTIPLICITY 1750#if EV_MULTIPLICITY
1471 assert (("signal watchers are only supported in the default loop", loop == default_loop)); 1751 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1472#endif 1752#endif
1473 if (ev_is_active (w)) 1753 if (expect_false (ev_is_active (w)))
1474 return; 1754 return;
1475 1755
1476 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 1756 assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1477 1757
1758 {
1759#ifndef _WIN32
1760 sigset_t full, prev;
1761 sigfillset (&full);
1762 sigprocmask (SIG_SETMASK, &full, &prev);
1763#endif
1764
1765 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1766
1767#ifndef _WIN32
1768 sigprocmask (SIG_SETMASK, &prev, 0);
1769#endif
1770 }
1771
1478 ev_start (EV_A_ (W)w, 1); 1772 ev_start (EV_A_ (W)w, 1);
1479 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1480 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); 1773 wlist_add (&signals [w->signum - 1].head, (WL)w);
1481 1774
1482 if (!((WL)w)->next) 1775 if (!((WL)w)->next)
1483 { 1776 {
1484#if WIN32 1777#if _WIN32
1485 signal (w->signum, sighandler); 1778 signal (w->signum, sighandler);
1486#else 1779#else
1487 struct sigaction sa; 1780 struct sigaction sa;
1488 sa.sa_handler = sighandler; 1781 sa.sa_handler = sighandler;
1489 sigfillset (&sa.sa_mask); 1782 sigfillset (&sa.sa_mask);
… …
1491 sigaction (w->signum, &sa, 0); 1784 sigaction (w->signum, &sa, 0);
1492#endif 1785#endif
1493 } 1786 }
1494} 1787}
1495 1788
1496void 1789void noinline
1497ev_signal_stop (EV_P_ struct ev_signal *w) 1790ev_signal_stop (EV_P_ ev_signal *w)
1498{ 1791{
1499 ev_clear_pending (EV_A_ (W)w); 1792 clear_pending (EV_A_ (W)w);
1500 if (!ev_is_active (w)) 1793 if (expect_false (!ev_is_active (w)))
1501 return; 1794 return;
1502 1795
1503 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); 1796 wlist_del (&signals [w->signum - 1].head, (WL)w);
1504 ev_stop (EV_A_ (W)w); 1797 ev_stop (EV_A_ (W)w);
1505 1798
1506 if (!signals [w->signum - 1].head) 1799 if (!signals [w->signum - 1].head)
1507 signal (w->signum, SIG_DFL); 1800 signal (w->signum, SIG_DFL);
1508} 1801}
1509 1802
1510void 1803void
1511ev_child_start (EV_P_ struct ev_child *w) 1804ev_child_start (EV_P_ ev_child *w)
1512{ 1805{
1513#if EV_MULTIPLICITY 1806#if EV_MULTIPLICITY
1514 assert (("child watchers are only supported in the default loop", loop == default_loop)); 1807 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1515#endif 1808#endif
1516 if (ev_is_active (w)) 1809 if (expect_false (ev_is_active (w)))
1517 return; 1810 return;
1518 1811
1519 ev_start (EV_A_ (W)w, 1); 1812 ev_start (EV_A_ (W)w, 1);
1520 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1813 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1521} 1814}
1522 1815
1523void 1816void
1524ev_child_stop (EV_P_ struct ev_child *w) 1817ev_child_stop (EV_P_ ev_child *w)
1525{ 1818{
1526 ev_clear_pending (EV_A_ (W)w); 1819 clear_pending (EV_A_ (W)w);
1527 if (ev_is_active (w)) 1820 if (expect_false (!ev_is_active (w)))
1528 return; 1821 return;
1529 1822
1530 wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1823 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1531 ev_stop (EV_A_ (W)w); 1824 ev_stop (EV_A_ (W)w);
1532} 1825}
1533 1826
1827#if EV_STAT_ENABLE
1828
1829# ifdef _WIN32
1830# undef lstat
1831# define lstat(a,b) _stati64 (a,b)
1832# endif
1833
1834#define DEF_STAT_INTERVAL 5.0074891
1835#define MIN_STAT_INTERVAL 0.1074891
1836
1837static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
1838
1839#if EV_USE_INOTIFY
1840# define EV_INOTIFY_BUFSIZE 8192
1841
1842static void noinline
1843infy_add (EV_P_ ev_stat *w)
1844{
1845 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);
1846
1847 if (w->wd < 0)
1848 {
1849 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
1850
1851 /* monitor some parent directory for speedup hints */
1852 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
1853 {
1854 char path [4096];
1855 strcpy (path, w->path);
1856
1857 do
1858 {
1859 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
1860 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
1861
1862 char *pend = strrchr (path, '/');
1863
1864 if (!pend)
1865 break; /* whoops, no '/', complain to your admin */
1866
1867 *pend = 0;
1868 w->wd = inotify_add_watch (fs_fd, path, mask);
1869 }
1870 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
1871 }
1872 }
1873 else
1874 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
1875
1876 if (w->wd >= 0)
1877 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
1878}
1879
1880static void noinline
1881infy_del (EV_P_ ev_stat *w)
1882{
1883 int slot;
1884 int wd = w->wd;
1885
1886 if (wd < 0)
1887 return;
1888
1889 w->wd = -2;
1890 slot = wd & (EV_INOTIFY_HASHSIZE - 1);
1891 wlist_del (&fs_hash [slot].head, (WL)w);
1892
1893 /* remove this watcher, if others are watching it, they will rearm */
1894 inotify_rm_watch (fs_fd, wd);
1895}
1896
1897static void noinline
1898infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
1899{
1900 if (slot < 0)
1901 /* overflow, need to check for all hahs slots */
1902 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
1903 infy_wd (EV_A_ slot, wd, ev);
1904 else
1905 {
1906 WL w_;
1907
1908 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
1909 {
1910 ev_stat *w = (ev_stat *)w_;
1911 w_ = w_->next; /* lets us remove this watcher and all before it */
1912
1913 if (w->wd == wd || wd == -1)
1914 {
1915 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
1916 {
1917 w->wd = -1;
1918 infy_add (EV_A_ w); /* re-add, no matter what */
1919 }
1920
1921 stat_timer_cb (EV_A_ &w->timer, 0);
1922 }
1923 }
1924 }
1925}
1926
1927static void
1928infy_cb (EV_P_ ev_io *w, int revents)
1929{
1930 char buf [EV_INOTIFY_BUFSIZE];
1931 struct inotify_event *ev = (struct inotify_event *)buf;
1932 int ofs;
1933 int len = read (fs_fd, buf, sizeof (buf));
1934
1935 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
1936 infy_wd (EV_A_ ev->wd, ev->wd, ev);
1937}
1938
1939void inline_size
1940infy_init (EV_P)
1941{
1942 if (fs_fd != -2)
1943 return;
1944
1945 fs_fd = inotify_init ();
1946
1947 if (fs_fd >= 0)
1948 {
1949 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
1950 ev_set_priority (&fs_w, EV_MAXPRI);
1951 ev_io_start (EV_A_ &fs_w);
1952 }
1953}
1954
1955void inline_size
1956infy_fork (EV_P)
1957{
1958 int slot;
1959
1960 if (fs_fd < 0)
1961 return;
1962
1963 close (fs_fd);
1964 fs_fd = inotify_init ();
1965
1966 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
1967 {
1968 WL w_ = fs_hash [slot].head;
1969 fs_hash [slot].head = 0;
1970
1971 while (w_)
1972 {
1973 ev_stat *w = (ev_stat *)w_;
1974 w_ = w_->next; /* lets us add this watcher */
1975
1976 w->wd = -1;
1977
1978 if (fs_fd >= 0)
1979 infy_add (EV_A_ w); /* re-add, no matter what */
1980 else
1981 ev_timer_start (EV_A_ &w->timer);
1982 }
1983
1984 }
1985}
1986
1987#endif
1988
1989void
1990ev_stat_stat (EV_P_ ev_stat *w)
1991{
1992 if (lstat (w->path, &w->attr) < 0)
1993 w->attr.st_nlink = 0;
1994 else if (!w->attr.st_nlink)
1995 w->attr.st_nlink = 1;
1996}
1997
1998static void noinline
1999stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2000{
2001 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2002
2003 /* we copy this here each the time so that */
2004 /* prev has the old value when the callback gets invoked */
2005 w->prev = w->attr;
2006 ev_stat_stat (EV_A_ w);
2007
2008 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2009 if (
2010 w->prev.st_dev != w->attr.st_dev
2011 || w->prev.st_ino != w->attr.st_ino
2012 || w->prev.st_mode != w->attr.st_mode
2013 || w->prev.st_nlink != w->attr.st_nlink
2014 || w->prev.st_uid != w->attr.st_uid
2015 || w->prev.st_gid != w->attr.st_gid
2016 || w->prev.st_rdev != w->attr.st_rdev
2017 || w->prev.st_size != w->attr.st_size
2018 || w->prev.st_atime != w->attr.st_atime
2019 || w->prev.st_mtime != w->attr.st_mtime
2020 || w->prev.st_ctime != w->attr.st_ctime
2021 ) {
2022 #if EV_USE_INOTIFY
2023 infy_del (EV_A_ w);
2024 infy_add (EV_A_ w);
2025 ev_stat_stat (EV_A_ w); /* avoid race... */
2026 #endif
2027
2028 ev_feed_event (EV_A_ w, EV_STAT);
2029 }
2030}
2031
2032void
2033ev_stat_start (EV_P_ ev_stat *w)
2034{
2035 if (expect_false (ev_is_active (w)))
2036 return;
2037
2038 /* since we use memcmp, we need to clear any padding data etc. */
2039 memset (&w->prev, 0, sizeof (ev_statdata));
2040 memset (&w->attr, 0, sizeof (ev_statdata));
2041
2042 ev_stat_stat (EV_A_ w);
2043
2044 if (w->interval < MIN_STAT_INTERVAL)
2045 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2046
2047 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
2048 ev_set_priority (&w->timer, ev_priority (w));
2049
2050#if EV_USE_INOTIFY
2051 infy_init (EV_A);
2052
2053 if (fs_fd >= 0)
2054 infy_add (EV_A_ w);
2055 else
2056#endif
2057 ev_timer_start (EV_A_ &w->timer);
2058
2059 ev_start (EV_A_ (W)w, 1);
2060}
2061
2062void
2063ev_stat_stop (EV_P_ ev_stat *w)
2064{
2065 clear_pending (EV_A_ (W)w);
2066 if (expect_false (!ev_is_active (w)))
2067 return;
2068
2069#if EV_USE_INOTIFY
2070 infy_del (EV_A_ w);
2071#endif
2072 ev_timer_stop (EV_A_ &w->timer);
2073
2074 ev_stop (EV_A_ (W)w);
2075}
2076#endif
2077
2078#if EV_IDLE_ENABLE
2079void
2080ev_idle_start (EV_P_ ev_idle *w)
2081{
2082 if (expect_false (ev_is_active (w)))
2083 return;
2084
2085 pri_adjust (EV_A_ (W)w);
2086
2087 {
2088 int active = ++idlecnt [ABSPRI (w)];
2089
2090 ++idleall;
2091 ev_start (EV_A_ (W)w, active);
2092
2093 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2094 idles [ABSPRI (w)][active - 1] = w;
2095 }
2096}
2097
2098void
2099ev_idle_stop (EV_P_ ev_idle *w)
2100{
2101 clear_pending (EV_A_ (W)w);
2102 if (expect_false (!ev_is_active (w)))
2103 return;
2104
2105 {
2106 int active = ((W)w)->active;
2107
2108 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2109 ((W)idles [ABSPRI (w)][active - 1])->active = active;
2110
2111 ev_stop (EV_A_ (W)w);
2112 --idleall;
2113 }
2114}
2115#endif
2116
2117void
2118ev_prepare_start (EV_P_ ev_prepare *w)
2119{
2120 if (expect_false (ev_is_active (w)))
2121 return;
2122
2123 ev_start (EV_A_ (W)w, ++preparecnt);
2124 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2125 prepares [preparecnt - 1] = w;
2126}
2127
2128void
2129ev_prepare_stop (EV_P_ ev_prepare *w)
2130{
2131 clear_pending (EV_A_ (W)w);
2132 if (expect_false (!ev_is_active (w)))
2133 return;
2134
2135 {
2136 int active = ((W)w)->active;
2137 prepares [active - 1] = prepares [--preparecnt];
2138 ((W)prepares [active - 1])->active = active;
2139 }
2140
2141 ev_stop (EV_A_ (W)w);
2142}
2143
2144void
2145ev_check_start (EV_P_ ev_check *w)
2146{
2147 if (expect_false (ev_is_active (w)))
2148 return;
2149
2150 ev_start (EV_A_ (W)w, ++checkcnt);
2151 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2152 checks [checkcnt - 1] = w;
2153}
2154
2155void
2156ev_check_stop (EV_P_ ev_check *w)
2157{
2158 clear_pending (EV_A_ (W)w);
2159 if (expect_false (!ev_is_active (w)))
2160 return;
2161
2162 {
2163 int active = ((W)w)->active;
2164 checks [active - 1] = checks [--checkcnt];
2165 ((W)checks [active - 1])->active = active;
2166 }
2167
2168 ev_stop (EV_A_ (W)w);
2169}
2170
2171#if EV_EMBED_ENABLE
2172void noinline
2173ev_embed_sweep (EV_P_ ev_embed *w)
2174{
2175 ev_loop (w->loop, EVLOOP_NONBLOCK);
2176}
2177
2178static void
2179embed_cb (EV_P_ ev_io *io, int revents)
2180{
2181 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2182
2183 if (ev_cb (w))
2184 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2185 else
2186 ev_embed_sweep (loop, w);
2187}
2188
2189void
2190ev_embed_start (EV_P_ ev_embed *w)
2191{
2192 if (expect_false (ev_is_active (w)))
2193 return;
2194
2195 {
2196 struct ev_loop *loop = w->loop;
2197 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2198 ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
2199 }
2200
2201 ev_set_priority (&w->io, ev_priority (w));
2202 ev_io_start (EV_A_ &w->io);
2203
2204 ev_start (EV_A_ (W)w, 1);
2205}
2206
2207void
2208ev_embed_stop (EV_P_ ev_embed *w)
2209{
2210 clear_pending (EV_A_ (W)w);
2211 if (expect_false (!ev_is_active (w)))
2212 return;
2213
2214 ev_io_stop (EV_A_ &w->io);
2215
2216 ev_stop (EV_A_ (W)w);
2217}
2218#endif
2219
2220#if EV_FORK_ENABLE
2221void
2222ev_fork_start (EV_P_ ev_fork *w)
2223{
2224 if (expect_false (ev_is_active (w)))
2225 return;
2226
2227 ev_start (EV_A_ (W)w, ++forkcnt);
2228 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2229 forks [forkcnt - 1] = w;
2230}
2231
2232void
2233ev_fork_stop (EV_P_ ev_fork *w)
2234{
2235 clear_pending (EV_A_ (W)w);
2236 if (expect_false (!ev_is_active (w)))
2237 return;
2238
2239 {
2240 int active = ((W)w)->active;
2241 forks [active - 1] = forks [--forkcnt];
2242 ((W)forks [active - 1])->active = active;
2243 }
2244
2245 ev_stop (EV_A_ (W)w);
2246}
2247#endif
2248
1534/*****************************************************************************/ 2249/*****************************************************************************/
1535 2250
1536struct ev_once 2251struct ev_once
1537{ 2252{
1538 struct ev_io io; 2253 ev_io io;
1539 struct ev_timer to; 2254 ev_timer to;
1540 void (*cb)(int revents, void *arg); 2255 void (*cb)(int revents, void *arg);
1541 void *arg; 2256 void *arg;
1542}; 2257};
1543 2258
1544static void 2259static void
… …
1553 2268
1554 cb (revents, arg); 2269 cb (revents, arg);
1555} 2270}
1556 2271
1557static void 2272static void
1558once_cb_io (EV_P_ struct ev_io *w, int revents) 2273once_cb_io (EV_P_ ev_io *w, int revents)
1559{ 2274{
1560 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 2275 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1561} 2276}
1562 2277
1563static void 2278static void
1564once_cb_to (EV_P_ struct ev_timer *w, int revents) 2279once_cb_to (EV_P_ ev_timer *w, int revents)
1565{ 2280{
1566 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 2281 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1567} 2282}
1568 2283
1569void 2284void
1570ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 2285ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1571{ 2286{
1572 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 2287 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1573 2288
1574 if (!once) 2289 if (expect_false (!once))
2290 {
1575 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 2291 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1576 else 2292 return;
1577 { 2293 }
2294
1578 once->cb = cb; 2295 once->cb = cb;
1579 once->arg = arg; 2296 once->arg = arg;
1580 2297
1581 ev_init (&once->io, once_cb_io); 2298 ev_init (&once->io, once_cb_io);
1582 if (fd >= 0) 2299 if (fd >= 0)
1583 { 2300 {
1584 ev_io_set (&once->io, fd, events); 2301 ev_io_set (&once->io, fd, events);
1585 ev_io_start (EV_A_ &once->io); 2302 ev_io_start (EV_A_ &once->io);
1586 } 2303 }
1587 2304
1588 ev_init (&once->to, once_cb_to); 2305 ev_init (&once->to, once_cb_to);
1589 if (timeout >= 0.) 2306 if (timeout >= 0.)
1590 { 2307 {
1591 ev_timer_set (&once->to, timeout, 0.); 2308 ev_timer_set (&once->to, timeout, 0.);
1592 ev_timer_start (EV_A_ &once->to); 2309 ev_timer_start (EV_A_ &once->to);
1593 }
1594 } 2310 }
1595} 2311}
1596 2312
2313#ifdef __cplusplus
2314}
2315#endif
2316

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