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Comparing libev/ev.c (file contents):
Revision 1.71 by root, Tue Nov 6 13:17:55 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>
… …
64#include <assert.h> 116#include <assert.h>
65#include <errno.h> 117#include <errno.h>
66#include <sys/types.h> 118#include <sys/types.h>
67#include <time.h> 119#include <time.h>
68 120
69#ifndef PERL
70# include <signal.h> 121#include <signal.h>
71#endif
72 122
123#ifdef EV_H
124# include EV_H
125#else
126# include "ev.h"
127#endif
128
73#ifndef WIN32 129#ifndef _WIN32
74# include <unistd.h>
75# include <sys/time.h> 130# include <sys/time.h>
76# include <sys/wait.h> 131# include <sys/wait.h>
132# include <unistd.h>
133#else
134# define WIN32_LEAN_AND_MEAN
135# include <windows.h>
136# ifndef EV_SELECT_IS_WINSOCKET
137# define EV_SELECT_IS_WINSOCKET 1
77#endif 138# endif
139#endif
140
78/**/ 141/**/
79 142
80#ifndef EV_USE_MONOTONIC 143#ifndef EV_USE_MONOTONIC
81# define EV_USE_MONOTONIC 1 144# define EV_USE_MONOTONIC 0
145#endif
146
147#ifndef EV_USE_REALTIME
148# define EV_USE_REALTIME 0
82#endif 149#endif
83 150
84#ifndef EV_USE_SELECT 151#ifndef EV_USE_SELECT
85# define EV_USE_SELECT 1 152# define EV_USE_SELECT 1
86#endif 153#endif
87 154
88#ifndef EV_USE_POLL 155#ifndef EV_USE_POLL
89# define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */ 156# ifdef _WIN32
157# define EV_USE_POLL 0
158# else
159# define EV_USE_POLL 1
160# endif
90#endif 161#endif
91 162
92#ifndef EV_USE_EPOLL 163#ifndef EV_USE_EPOLL
93# define EV_USE_EPOLL 0 164# define EV_USE_EPOLL 0
94#endif 165#endif
95 166
96#ifndef EV_USE_KQUEUE 167#ifndef EV_USE_KQUEUE
97# define EV_USE_KQUEUE 0 168# define EV_USE_KQUEUE 0
98#endif 169#endif
99 170
171#ifndef EV_USE_PORT
172# define EV_USE_PORT 0
173#endif
174
100#ifndef EV_USE_WIN32 175#ifndef EV_USE_INOTIFY
101# ifdef WIN32 176# define EV_USE_INOTIFY 0
102# define EV_USE_WIN32 0 /* it does not exist, use select */ 177#endif
103# undef EV_USE_SELECT 178
104# define EV_USE_SELECT 1 179#ifndef EV_PID_HASHSIZE
180# if EV_MINIMAL
181# define EV_PID_HASHSIZE 1
105# else 182# else
106# define EV_USE_WIN32 0 183# define EV_PID_HASHSIZE 16
107# endif 184# endif
108#endif 185#endif
109 186
110#ifndef EV_USE_REALTIME 187#ifndef EV_INOTIFY_HASHSIZE
111# define EV_USE_REALTIME 1 188# if EV_MINIMAL
189# define EV_INOTIFY_HASHSIZE 1
190# else
191# define EV_INOTIFY_HASHSIZE 16
192# endif
112#endif 193#endif
113 194
114/**/ 195/**/
115 196
116#ifndef CLOCK_MONOTONIC 197#ifndef CLOCK_MONOTONIC
… …
121#ifndef CLOCK_REALTIME 202#ifndef CLOCK_REALTIME
122# undef EV_USE_REALTIME 203# undef EV_USE_REALTIME
123# define EV_USE_REALTIME 0 204# define EV_USE_REALTIME 0
124#endif 205#endif
125 206
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
126/**/ 219/**/
127 220
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
128#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 231#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
129#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */ 232#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
130#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
131/*#define CLEANUP_INTERVAL 300. /* how often to try to free memory and re-check fds */ 233/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
132
133#include "ev.h"
134 234
135#if __GNUC__ >= 3 235#if __GNUC__ >= 3
136# define expect(expr,value) __builtin_expect ((expr),(value)) 236# define expect(expr,value) __builtin_expect ((expr),(value))
137# define inline inline 237# define noinline __attribute__ ((noinline))
138#else 238#else
139# define expect(expr,value) (expr) 239# define expect(expr,value) (expr)
140# define inline static 240# define noinline
241# if __STDC_VERSION__ < 199901L
242# define inline
243# endif
141#endif 244#endif
142 245
143#define expect_false(expr) expect ((expr) != 0, 0) 246#define expect_false(expr) expect ((expr) != 0, 0)
144#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
145 255
146#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 256#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
147#define ABSPRI(w) ((w)->priority - EV_MINPRI) 257#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
148 258
259#define EMPTY /* required for microsofts broken pseudo-c compiler */
260#define EMPTY2(a,b) /* used to suppress some warnings */
261
149typedef struct ev_watcher *W; 262typedef ev_watcher *W;
150typedef struct ev_watcher_list *WL; 263typedef ev_watcher_list *WL;
151typedef struct ev_watcher_time *WT; 264typedef ev_watcher_time *WT;
152 265
153static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 266static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
154 267
155#if WIN32 268#ifdef _WIN32
156/* note: the comment below could not be substantiated, but what would I care */ 269# include "ev_win32.c"
157/* MSDN says this is required to handle SIGFPE */
158volatile double SIGFPE_REQ = 0.0f;
159#endif 270#endif
160 271
161/*****************************************************************************/ 272/*****************************************************************************/
162 273
163static void (*syserr_cb)(const char *msg); 274static void (*syserr_cb)(const char *msg);
164 275
276void
165void ev_set_syserr_cb (void (*cb)(const char *msg)) 277ev_set_syserr_cb (void (*cb)(const char *msg))
166{ 278{
167 syserr_cb = cb; 279 syserr_cb = cb;
168} 280}
169 281
170static void 282static void noinline
171syserr (const char *msg) 283syserr (const char *msg)
172{ 284{
173 if (!msg) 285 if (!msg)
174 msg = "(libev) system error"; 286 msg = "(libev) system error";
175 287
… …
182 } 294 }
183} 295}
184 296
185static void *(*alloc)(void *ptr, long size); 297static void *(*alloc)(void *ptr, long size);
186 298
299void
187void ev_set_allocator (void *(*cb)(void *ptr, long size)) 300ev_set_allocator (void *(*cb)(void *ptr, long size))
188{ 301{
189 alloc = cb; 302 alloc = cb;
190} 303}
191 304
192static void * 305inline_speed void *
193ev_realloc (void *ptr, long size) 306ev_realloc (void *ptr, long size)
194{ 307{
195 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size); 308 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
196 309
197 if (!ptr && size) 310 if (!ptr && size)
… …
211typedef struct 324typedef struct
212{ 325{
213 WL head; 326 WL head;
214 unsigned char events; 327 unsigned char events;
215 unsigned char reify; 328 unsigned char reify;
329#if EV_SELECT_IS_WINSOCKET
330 SOCKET handle;
331#endif
216} ANFD; 332} ANFD;
217 333
218typedef struct 334typedef struct
219{ 335{
220 W w; 336 W w;
221 int events; 337 int events;
222} ANPENDING; 338} ANPENDING;
223 339
340#if EV_USE_INOTIFY
341typedef struct
342{
343 WL head;
344} ANFS;
345#endif
346
224#if EV_MULTIPLICITY 347#if EV_MULTIPLICITY
225 348
226struct ev_loop 349 struct ev_loop
227{ 350 {
351 ev_tstamp ev_rt_now;
352 #define ev_rt_now ((loop)->ev_rt_now)
228# define VAR(name,decl) decl; 353 #define VAR(name,decl) decl;
229# include "ev_vars.h" 354 #include "ev_vars.h"
230};
231# undef VAR 355 #undef VAR
356 };
232# include "ev_wrap.h" 357 #include "ev_wrap.h"
358
359 static struct ev_loop default_loop_struct;
360 struct ev_loop *ev_default_loop_ptr;
233 361
234#else 362#else
235 363
364 ev_tstamp ev_rt_now;
236# define VAR(name,decl) static decl; 365 #define VAR(name,decl) static decl;
237# include "ev_vars.h" 366 #include "ev_vars.h"
238# undef VAR 367 #undef VAR
368
369 static int ev_default_loop_ptr;
239 370
240#endif 371#endif
241 372
242/*****************************************************************************/ 373/*****************************************************************************/
243 374
244inline ev_tstamp 375ev_tstamp
245ev_time (void) 376ev_time (void)
246{ 377{
247#if EV_USE_REALTIME 378#if EV_USE_REALTIME
248 struct timespec ts; 379 struct timespec ts;
249 clock_gettime (CLOCK_REALTIME, &ts); 380 clock_gettime (CLOCK_REALTIME, &ts);
… …
253 gettimeofday (&tv, 0); 384 gettimeofday (&tv, 0);
254 return tv.tv_sec + tv.tv_usec * 1e-6; 385 return tv.tv_sec + tv.tv_usec * 1e-6;
255#endif 386#endif
256} 387}
257 388
258inline ev_tstamp 389ev_tstamp inline_size
259get_clock (void) 390get_clock (void)
260{ 391{
261#if EV_USE_MONOTONIC 392#if EV_USE_MONOTONIC
262 if (expect_true (have_monotonic)) 393 if (expect_true (have_monotonic))
263 { 394 {
… …
268#endif 399#endif
269 400
270 return ev_time (); 401 return ev_time ();
271} 402}
272 403
404#if EV_MULTIPLICITY
273ev_tstamp 405ev_tstamp
274ev_now (EV_P) 406ev_now (EV_P)
275{ 407{
276 return rt_now; 408 return ev_rt_now;
277} 409}
410#endif
278 411
279#define array_roundsize(base,n) ((n) | 4 & ~3) 412int inline_size
413array_nextsize (int elem, int cur, int cnt)
414{
415 int ncur = cur + 1;
280 416
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}
439
281#define array_needsize(base,cur,cnt,init) \ 440#define array_needsize(type,base,cur,cnt,init) \
282 if (expect_false ((cnt) > cur)) \ 441 if (expect_false ((cnt) > (cur))) \
283 { \ 442 { \
284 int newcnt = cur; \ 443 int ocur_ = (cur); \
285 do \ 444 (base) = (type *)array_realloc \
286 { \ 445 (sizeof (type), (base), &(cur), (cnt)); \
287 newcnt = array_roundsize (base, newcnt << 1); \ 446 init ((base) + (ocur_), (cur) - ocur_); \
288 } \
289 while ((cnt) > newcnt); \
290 \
291 base = ev_realloc (base, sizeof (*base) * (newcnt)); \
292 init (base + cur, newcnt - cur); \
293 cur = newcnt; \
294 } 447 }
295 448
449#if 0
296#define array_slim(stem) \ 450#define array_slim(type,stem) \
297 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 451 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
298 { \ 452 { \
299 stem ## max = array_roundsize (stem ## cnt >> 1); \ 453 stem ## max = array_roundsize (stem ## cnt >> 1); \
300 base = ev_realloc (base, sizeof (*base) * (stem ## max)); \ 454 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
301 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 455 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
302 } 456 }
303 457#endif
304/* microsoft's pseudo-c is quite far from C as the rest of the world and the standard knows it */
305/* bringing us everlasting joy in form of stupid extra macros that are not required in C */
306#define array_free_microshit(stem) \
307 ev_free (stem ## s); stem ## cnt = stem ## max = 0;
308 458
309#define array_free(stem, idx) \ 459#define array_free(stem, idx) \
310 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;
311 461
312/*****************************************************************************/ 462/*****************************************************************************/
313 463
314static 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
315anfds_init (ANFD *base, int count) 493anfds_init (ANFD *base, int count)
316{ 494{
317 while (count--) 495 while (count--)
318 { 496 {
319 base->head = 0; 497 base->head = 0;
… …
322 500
323 ++base; 501 ++base;
324 } 502 }
325} 503}
326 504
327static void 505void inline_speed
328event (EV_P_ W w, int events)
329{
330 if (w->pending)
331 {
332 pendings [ABSPRI (w)][w->pending - 1].events |= events;
333 return;
334 }
335
336 w->pending = ++pendingcnt [ABSPRI (w)];
337 array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], (void));
338 pendings [ABSPRI (w)][w->pending - 1].w = w;
339 pendings [ABSPRI (w)][w->pending - 1].events = events;
340}
341
342static void
343queue_events (EV_P_ W *events, int eventcnt, int type)
344{
345 int i;
346
347 for (i = 0; i < eventcnt; ++i)
348 event (EV_A_ events [i], type);
349}
350
351static void
352fd_event (EV_P_ int fd, int events) 506fd_event (EV_P_ int fd, int revents)
353{ 507{
354 ANFD *anfd = anfds + fd; 508 ANFD *anfd = anfds + fd;
355 struct ev_io *w; 509 ev_io *w;
356 510
357 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)
358 { 512 {
359 int ev = w->events & events; 513 int ev = w->events & revents;
360 514
361 if (ev) 515 if (ev)
362 event (EV_A_ (W)w, ev); 516 ev_feed_event (EV_A_ (W)w, ev);
363 } 517 }
364} 518}
365 519
366/*****************************************************************************/ 520void
521ev_feed_fd_event (EV_P_ int fd, int revents)
522{
523 if (fd >= 0 && fd < anfdmax)
524 fd_event (EV_A_ fd, revents);
525}
367 526
368static void 527void inline_size
369fd_reify (EV_P) 528fd_reify (EV_P)
370{ 529{
371 int i; 530 int i;
372 531
373 for (i = 0; i < fdchangecnt; ++i) 532 for (i = 0; i < fdchangecnt; ++i)
374 { 533 {
375 int fd = fdchanges [i]; 534 int fd = fdchanges [i];
376 ANFD *anfd = anfds + fd; 535 ANFD *anfd = anfds + fd;
377 struct ev_io *w; 536 ev_io *w;
378 537
379 int events = 0; 538 int events = 0;
380 539
381 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)
382 events |= w->events; 541 events |= w->events;
383 542
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
384 anfd->reify = 0; 552 anfd->reify = 0;
385 553
386 method_modify (EV_A_ fd, anfd->events, events); 554 backend_modify (EV_A_ fd, anfd->events, events);
387 anfd->events = events; 555 anfd->events = events;
388 } 556 }
389 557
390 fdchangecnt = 0; 558 fdchangecnt = 0;
391} 559}
392 560
393static void 561void inline_size
394fd_change (EV_P_ int fd) 562fd_change (EV_P_ int fd, int flags)
395{ 563{
396 if (anfds [fd].reify) 564 unsigned char reify = anfds [fd].reify;
397 return;
398
399 anfds [fd].reify = 1; 565 anfds [fd].reify |= flags | 1;
400 566
567 if (expect_true (!reify))
568 {
401 ++fdchangecnt; 569 ++fdchangecnt;
402 array_needsize (fdchanges, fdchangemax, fdchangecnt, (void)); 570 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
403 fdchanges [fdchangecnt - 1] = fd; 571 fdchanges [fdchangecnt - 1] = fd;
572 }
404} 573}
405 574
406static void 575void inline_speed
407fd_kill (EV_P_ int fd) 576fd_kill (EV_P_ int fd)
408{ 577{
409 struct ev_io *w; 578 ev_io *w;
410 579
411 while ((w = (struct ev_io *)anfds [fd].head)) 580 while ((w = (ev_io *)anfds [fd].head))
412 { 581 {
413 ev_io_stop (EV_A_ w); 582 ev_io_stop (EV_A_ w);
414 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);
415 } 584 }
416} 585}
417 586
418static int 587int inline_size
419fd_valid (int fd) 588fd_valid (int fd)
420{ 589{
421#ifdef WIN32 590#ifdef _WIN32
422 return !!win32_get_osfhandle (fd); 591 return _get_osfhandle (fd) != -1;
423#else 592#else
424 return fcntl (fd, F_GETFD) != -1; 593 return fcntl (fd, F_GETFD) != -1;
425#endif 594#endif
426} 595}
427 596
428/* called on EBADF to verify fds */ 597/* called on EBADF to verify fds */
429static void 598static void noinline
430fd_ebadf (EV_P) 599fd_ebadf (EV_P)
431{ 600{
432 int fd; 601 int fd;
433 602
434 for (fd = 0; fd < anfdmax; ++fd) 603 for (fd = 0; fd < anfdmax; ++fd)
… …
436 if (!fd_valid (fd) == -1 && errno == EBADF) 605 if (!fd_valid (fd) == -1 && errno == EBADF)
437 fd_kill (EV_A_ fd); 606 fd_kill (EV_A_ fd);
438} 607}
439 608
440/* 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 */
441static void 610static void noinline
442fd_enomem (EV_P) 611fd_enomem (EV_P)
443{ 612{
444 int fd; 613 int fd;
445 614
446 for (fd = anfdmax; fd--; ) 615 for (fd = anfdmax; fd--; )
… …
449 fd_kill (EV_A_ fd); 618 fd_kill (EV_A_ fd);
450 return; 619 return;
451 } 620 }
452} 621}
453 622
454/* 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 */
455static void 624static void noinline
456fd_rearm_all (EV_P) 625fd_rearm_all (EV_P)
457{ 626{
458 int fd; 627 int fd;
459 628
460 /* this should be highly optimised to not do anything but set a flag */
461 for (fd = 0; fd < anfdmax; ++fd) 629 for (fd = 0; fd < anfdmax; ++fd)
462 if (anfds [fd].events) 630 if (anfds [fd].events)
463 { 631 {
464 anfds [fd].events = 0; 632 anfds [fd].events = 0;
465 fd_change (EV_A_ fd); 633 fd_change (EV_A_ fd, EV_IOFDSET);
466 } 634 }
467} 635}
468 636
469/*****************************************************************************/ 637/*****************************************************************************/
470 638
471static void 639void inline_speed
472upheap (WT *heap, int k) 640upheap (WT *heap, int k)
473{ 641{
474 WT w = heap [k]; 642 WT w = heap [k];
475 643
476 while (k && heap [k >> 1]->at > w->at) 644 while (k)
477 { 645 {
646 int p = (k - 1) >> 1;
647
648 if (heap [p]->at <= w->at)
649 break;
650
478 heap [k] = heap [k >> 1]; 651 heap [k] = heap [p];
479 ((W)heap [k])->active = k + 1; 652 ((W)heap [k])->active = k + 1;
480 k >>= 1; 653 k = p;
481 } 654 }
482 655
483 heap [k] = w; 656 heap [k] = w;
484 ((W)heap [k])->active = k + 1; 657 ((W)heap [k])->active = k + 1;
485
486} 658}
487 659
488static void 660void inline_speed
489downheap (WT *heap, int N, int k) 661downheap (WT *heap, int N, int k)
490{ 662{
491 WT w = heap [k]; 663 WT w = heap [k];
492 664
493 while (k < (N >> 1)) 665 for (;;)
494 { 666 {
495 int j = k << 1; 667 int c = (k << 1) + 1;
496 668
497 if (j + 1 < N && heap [j]->at > heap [j + 1]->at) 669 if (c >= N)
498 ++j;
499
500 if (w->at <= heap [j]->at)
501 break; 670 break;
502 671
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
503 heap [k] = heap [j]; 678 heap [k] = heap [c];
504 ((W)heap [k])->active = k + 1; 679 ((W)heap [k])->active = k + 1;
680
505 k = j; 681 k = c;
506 } 682 }
507 683
508 heap [k] = w; 684 heap [k] = w;
509 ((W)heap [k])->active = k + 1; 685 ((W)heap [k])->active = k + 1;
686}
687
688void inline_size
689adjustheap (WT *heap, int N, int k)
690{
691 upheap (heap, k);
692 downheap (heap, N, k);
510} 693}
511 694
512/*****************************************************************************/ 695/*****************************************************************************/
513 696
514typedef struct 697typedef struct
… …
520static ANSIG *signals; 703static ANSIG *signals;
521static int signalmax; 704static int signalmax;
522 705
523static int sigpipe [2]; 706static int sigpipe [2];
524static sig_atomic_t volatile gotsig; 707static sig_atomic_t volatile gotsig;
525static struct ev_io sigev; 708static ev_io sigev;
526 709
527static void 710void inline_size
528signals_init (ANSIG *base, int count) 711signals_init (ANSIG *base, int count)
529{ 712{
530 while (count--) 713 while (count--)
531 { 714 {
532 base->head = 0; 715 base->head = 0;
… …
537} 720}
538 721
539static void 722static void
540sighandler (int signum) 723sighandler (int signum)
541{ 724{
542#if WIN32 725#if _WIN32
543 signal (signum, sighandler); 726 signal (signum, sighandler);
544#endif 727#endif
545 728
546 signals [signum - 1].gotsig = 1; 729 signals [signum - 1].gotsig = 1;
547 730
… …
552 write (sigpipe [1], &signum, 1); 735 write (sigpipe [1], &signum, 1);
553 errno = old_errno; 736 errno = old_errno;
554 } 737 }
555} 738}
556 739
740void noinline
741ev_feed_signal_event (EV_P_ int signum)
742{
743 WL w;
744
745#if EV_MULTIPLICITY
746 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
747#endif
748
749 --signum;
750
751 if (signum < 0 || signum >= signalmax)
752 return;
753
754 signals [signum].gotsig = 0;
755
756 for (w = signals [signum].head; w; w = w->next)
757 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
758}
759
557static void 760static void
558sigcb (EV_P_ struct ev_io *iow, int revents) 761sigcb (EV_P_ ev_io *iow, int revents)
559{ 762{
560 WL w;
561 int signum; 763 int signum;
562 764
563 read (sigpipe [0], &revents, 1); 765 read (sigpipe [0], &revents, 1);
564 gotsig = 0; 766 gotsig = 0;
565 767
566 for (signum = signalmax; signum--; ) 768 for (signum = signalmax; signum--; )
567 if (signals [signum].gotsig) 769 if (signals [signum].gotsig)
568 { 770 ev_feed_signal_event (EV_A_ signum + 1);
569 signals [signum].gotsig = 0;
570
571 for (w = signals [signum].head; w; w = w->next)
572 event (EV_A_ (W)w, EV_SIGNAL);
573 }
574} 771}
575 772
576static 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
577siginit (EV_P) 786siginit (EV_P)
578{ 787{
579#ifndef WIN32 788 fd_intern (sigpipe [0]);
580 fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC); 789 fd_intern (sigpipe [1]);
581 fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
582
583 /* rather than sort out wether we really need nb, set it */
584 fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
585 fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
586#endif
587 790
588 ev_io_set (&sigev, sigpipe [0], EV_READ); 791 ev_io_set (&sigev, sigpipe [0], EV_READ);
589 ev_io_start (EV_A_ &sigev); 792 ev_io_start (EV_A_ &sigev);
590 ev_unref (EV_A); /* child watcher should not keep loop alive */ 793 ev_unref (EV_A); /* child watcher should not keep loop alive */
591} 794}
592 795
593/*****************************************************************************/ 796/*****************************************************************************/
594 797
595static struct ev_child *childs [PID_HASHSIZE]; 798static WL childs [EV_PID_HASHSIZE];
596 799
597#ifndef WIN32 800#ifndef _WIN32
598 801
599static 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}
600 818
601#ifndef WCONTINUED 819#ifndef WCONTINUED
602# define WCONTINUED 0 820# define WCONTINUED 0
603#endif 821#endif
604 822
605static void 823static void
606child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
607{
608 struct ev_child *w;
609
610 for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
611 if (w->pid == pid || !w->pid)
612 {
613 ev_priority (w) = ev_priority (sw); /* need to do it *now* */
614 w->rpid = pid;
615 w->rstatus = status;
616 event (EV_A_ (W)w, EV_CHILD);
617 }
618}
619
620static void
621childcb (EV_P_ struct ev_signal *sw, int revents) 824childcb (EV_P_ ev_signal *sw, int revents)
622{ 825{
623 int pid, status; 826 int pid, status;
624 827
828 /* some systems define WCONTINUED but then fail to support it (linux 2.4) */
625 if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) 829 if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
626 { 830 if (!WCONTINUED
831 || errno != EINVAL
832 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
833 return;
834
627 /* 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 */
628 event (EV_A_ (W)sw, EV_SIGNAL); 837 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
629 838
630 child_reap (EV_A_ sw, pid, pid, status); 839 child_reap (EV_A_ sw, pid, pid, status);
840 if (EV_PID_HASHSIZE > 1)
631 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 */
632 }
633} 842}
634 843
635#endif 844#endif
636 845
637/*****************************************************************************/ 846/*****************************************************************************/
638 847
848#if EV_USE_PORT
849# include "ev_port.c"
850#endif
639#if EV_USE_KQUEUE 851#if EV_USE_KQUEUE
640# include "ev_kqueue.c" 852# include "ev_kqueue.c"
641#endif 853#endif
642#if EV_USE_EPOLL 854#if EV_USE_EPOLL
643# include "ev_epoll.c" 855# include "ev_epoll.c"
… …
660{ 872{
661 return EV_VERSION_MINOR; 873 return EV_VERSION_MINOR;
662} 874}
663 875
664/* 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 */
665static int 877int inline_size
666enable_secure (void) 878enable_secure (void)
667{ 879{
668#ifdef WIN32 880#ifdef _WIN32
669 return 0; 881 return 0;
670#else 882#else
671 return getuid () != geteuid () 883 return getuid () != geteuid ()
672 || getgid () != getegid (); 884 || getgid () != getegid ();
673#endif 885#endif
674} 886}
675 887
676int 888unsigned int
677ev_method (EV_P) 889ev_supported_backends (void)
678{ 890{
679 return method; 891 unsigned int flags = 0;
680}
681 892
682static void 893 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
683loop_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)
684{ 904{
685 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)
686 { 944 {
687#if EV_USE_MONOTONIC 945#if EV_USE_MONOTONIC
688 { 946 {
689 struct timespec ts; 947 struct timespec ts;
690 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 948 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
691 have_monotonic = 1; 949 have_monotonic = 1;
692 } 950 }
693#endif 951#endif
694 952
695 rt_now = ev_time (); 953 ev_rt_now = ev_time ();
696 mn_now = get_clock (); 954 mn_now = get_clock ();
697 now_floor = mn_now; 955 now_floor = mn_now;
698 rtmn_diff = rt_now - mn_now; 956 rtmn_diff = ev_rt_now - mn_now;
699 957
700 if (methods == EVMETHOD_AUTO) 958 /* pid check not overridable via env */
701 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"))
702 methods = atoi (getenv ("LIBEV_METHODS")); 967 flags = atoi (getenv ("LIBEV_FLAGS"));
703 else
704 methods = EVMETHOD_ANY;
705 968
706 method = 0; 969 if (!(flags & 0x0000ffffUL))
970 flags |= ev_recommended_backends ();
971
972 backend = 0;
973 backend_fd = -1;
707#if EV_USE_WIN32 974#if EV_USE_INOTIFY
708 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);
709#endif 980#endif
710#if EV_USE_KQUEUE 981#if EV_USE_KQUEUE
711 if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods); 982 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
712#endif 983#endif
713#if EV_USE_EPOLL 984#if EV_USE_EPOLL
714 if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods); 985 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
715#endif 986#endif
716#if EV_USE_POLL 987#if EV_USE_POLL
717 if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods); 988 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
718#endif 989#endif
719#if EV_USE_SELECT 990#if EV_USE_SELECT
720 if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods); 991 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
721#endif 992#endif
722 993
723 ev_watcher_init (&sigev, sigcb); 994 ev_init (&sigev, sigcb);
724 ev_set_priority (&sigev, EV_MAXPRI); 995 ev_set_priority (&sigev, EV_MAXPRI);
725 } 996 }
726} 997}
727 998
728void 999static void noinline
729loop_destroy (EV_P) 1000loop_destroy (EV_P)
730{ 1001{
731 int i; 1002 int i;
732 1003
733#if EV_USE_WIN32 1004#if EV_USE_INOTIFY
734 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);
735#endif 1014#endif
736#if EV_USE_KQUEUE 1015#if EV_USE_KQUEUE
737 if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A); 1016 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
738#endif 1017#endif
739#if EV_USE_EPOLL 1018#if EV_USE_EPOLL
740 if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A); 1019 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
741#endif 1020#endif
742#if EV_USE_POLL 1021#if EV_USE_POLL
743 if (method == EVMETHOD_POLL ) poll_destroy (EV_A); 1022 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
744#endif 1023#endif
745#if EV_USE_SELECT 1024#if EV_USE_SELECT
746 if (method == EVMETHOD_SELECT) select_destroy (EV_A); 1025 if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
747#endif 1026#endif
748 1027
749 for (i = NUMPRI; i--; ) 1028 for (i = NUMPRI; i--; )
1029 {
750 array_free (pending, [i]); 1030 array_free (pending, [i]);
1031#if EV_IDLE_ENABLE
1032 array_free (idle, [i]);
1033#endif
1034 }
751 1035
752 /* have to use the microsoft-never-gets-it-right macro */ 1036 /* have to use the microsoft-never-gets-it-right macro */
753 array_free_microshit (fdchange); 1037 array_free (fdchange, EMPTY);
754 array_free_microshit (timer); 1038 array_free (timer, EMPTY);
755 array_free_microshit (periodic); 1039#if EV_PERIODIC_ENABLE
756 array_free_microshit (idle); 1040 array_free (periodic, EMPTY);
757 array_free_microshit (prepare); 1041#endif
758 array_free_microshit (check); 1042 array_free (prepare, EMPTY);
1043 array_free (check, EMPTY);
759 1044
760 method = 0; 1045 backend = 0;
761} 1046}
762 1047
763static void 1048void inline_size infy_fork (EV_P);
1049
1050void inline_size
764loop_fork (EV_P) 1051loop_fork (EV_P)
765{ 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
766#if EV_USE_EPOLL 1059#if EV_USE_EPOLL
767 if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A); 1060 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
768#endif 1061#endif
769#if EV_USE_KQUEUE 1062#if EV_USE_INOTIFY
770 if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A); 1063 infy_fork (EV_A);
771#endif 1064#endif
772 1065
773 if (ev_is_active (&sigev)) 1066 if (ev_is_active (&sigev))
774 { 1067 {
775 /* default loop */ 1068 /* default loop */
… …
788 postfork = 0; 1081 postfork = 0;
789} 1082}
790 1083
791#if EV_MULTIPLICITY 1084#if EV_MULTIPLICITY
792struct ev_loop * 1085struct ev_loop *
793ev_loop_new (int methods) 1086ev_loop_new (unsigned int flags)
794{ 1087{
795 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));
796 1089
797 memset (loop, 0, sizeof (struct ev_loop)); 1090 memset (loop, 0, sizeof (struct ev_loop));
798 1091
799 loop_init (EV_A_ methods); 1092 loop_init (EV_A_ flags);
800 1093
801 if (ev_method (EV_A)) 1094 if (ev_backend (EV_A))
802 return loop; 1095 return loop;
803 1096
804 return 0; 1097 return 0;
805} 1098}
806 1099
… …
818} 1111}
819 1112
820#endif 1113#endif
821 1114
822#if EV_MULTIPLICITY 1115#if EV_MULTIPLICITY
823struct ev_loop default_loop_struct;
824static struct ev_loop *default_loop;
825
826struct ev_loop * 1116struct ev_loop *
1117ev_default_loop_init (unsigned int flags)
827#else 1118#else
828static int default_loop;
829
830int 1119int
1120ev_default_loop (unsigned int flags)
831#endif 1121#endif
832ev_default_loop (int methods)
833{ 1122{
834 if (sigpipe [0] == sigpipe [1]) 1123 if (sigpipe [0] == sigpipe [1])
835 if (pipe (sigpipe)) 1124 if (pipe (sigpipe))
836 return 0; 1125 return 0;
837 1126
838 if (!default_loop) 1127 if (!ev_default_loop_ptr)
839 { 1128 {
840#if EV_MULTIPLICITY 1129#if EV_MULTIPLICITY
841 struct ev_loop *loop = default_loop = &default_loop_struct; 1130 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
842#else 1131#else
843 default_loop = 1; 1132 ev_default_loop_ptr = 1;
844#endif 1133#endif
845 1134
846 loop_init (EV_A_ methods); 1135 loop_init (EV_A_ flags);
847 1136
848 if (ev_method (EV_A)) 1137 if (ev_backend (EV_A))
849 { 1138 {
850 siginit (EV_A); 1139 siginit (EV_A);
851 1140
852#ifndef WIN32 1141#ifndef _WIN32
853 ev_signal_init (&childev, childcb, SIGCHLD); 1142 ev_signal_init (&childev, childcb, SIGCHLD);
854 ev_set_priority (&childev, EV_MAXPRI); 1143 ev_set_priority (&childev, EV_MAXPRI);
855 ev_signal_start (EV_A_ &childev); 1144 ev_signal_start (EV_A_ &childev);
856 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1145 ev_unref (EV_A); /* child watcher should not keep loop alive */
857#endif 1146#endif
858 } 1147 }
859 else 1148 else
860 default_loop = 0; 1149 ev_default_loop_ptr = 0;
861 } 1150 }
862 1151
863 return default_loop; 1152 return ev_default_loop_ptr;
864} 1153}
865 1154
866void 1155void
867ev_default_destroy (void) 1156ev_default_destroy (void)
868{ 1157{
869#if EV_MULTIPLICITY 1158#if EV_MULTIPLICITY
870 struct ev_loop *loop = default_loop; 1159 struct ev_loop *loop = ev_default_loop_ptr;
871#endif 1160#endif
872 1161
873#ifndef WIN32 1162#ifndef _WIN32
874 ev_ref (EV_A); /* child watcher */ 1163 ev_ref (EV_A); /* child watcher */
875 ev_signal_stop (EV_A_ &childev); 1164 ev_signal_stop (EV_A_ &childev);
876#endif 1165#endif
877 1166
878 ev_ref (EV_A); /* signal watcher */ 1167 ev_ref (EV_A); /* signal watcher */
… …
886 1175
887void 1176void
888ev_default_fork (void) 1177ev_default_fork (void)
889{ 1178{
890#if EV_MULTIPLICITY 1179#if EV_MULTIPLICITY
891 struct ev_loop *loop = default_loop; 1180 struct ev_loop *loop = ev_default_loop_ptr;
892#endif 1181#endif
893 1182
894 if (method) 1183 if (backend)
895 postfork = 1; 1184 postfork = 1;
896} 1185}
897 1186
898/*****************************************************************************/ 1187/*****************************************************************************/
899 1188
900static void 1189void
1190ev_invoke (EV_P_ void *w, int revents)
1191{
1192 EV_CB_INVOKE ((W)w, revents);
1193}
1194
1195void inline_speed
901call_pending (EV_P) 1196call_pending (EV_P)
902{ 1197{
903 int pri; 1198 int pri;
904 1199
905 for (pri = NUMPRI; pri--; ) 1200 for (pri = NUMPRI; pri--; )
906 while (pendingcnt [pri]) 1201 while (pendingcnt [pri])
907 { 1202 {
908 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 1203 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
909 1204
910 if (p->w) 1205 if (expect_true (p->w))
911 { 1206 {
1207 /*assert (("non-pending watcher on pending list", p->w->pending));*/
1208
912 p->w->pending = 0; 1209 p->w->pending = 0;
913 p->w->cb (EV_A_ p->w, p->events); 1210 EV_CB_INVOKE (p->w, p->events);
914 } 1211 }
915 } 1212 }
916} 1213}
917 1214
918static void 1215void inline_size
919timers_reify (EV_P) 1216timers_reify (EV_P)
920{ 1217{
921 while (timercnt && ((WT)timers [0])->at <= mn_now) 1218 while (timercnt && ((WT)timers [0])->at <= mn_now)
922 { 1219 {
923 struct ev_timer *w = timers [0]; 1220 ev_timer *w = (ev_timer *)timers [0];
924 1221
925 assert (("inactive timer on timer heap detected", ev_is_active (w))); 1222 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
926 1223
927 /* first reschedule or stop timer */ 1224 /* first reschedule or stop timer */
928 if (w->repeat) 1225 if (w->repeat)
929 { 1226 {
930 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
931 ((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
932 downheap ((WT *)timers, timercnt, 0); 1233 downheap (timers, timercnt, 0);
933 } 1234 }
934 else 1235 else
935 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ 1236 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
936 1237
937 event (EV_A_ (W)w, EV_TIMEOUT); 1238 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
938 } 1239 }
939} 1240}
940 1241
941static void 1242#if EV_PERIODIC_ENABLE
1243void inline_size
942periodics_reify (EV_P) 1244periodics_reify (EV_P)
943{ 1245{
944 while (periodiccnt && ((WT)periodics [0])->at <= rt_now) 1246 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
945 { 1247 {
946 struct ev_periodic *w = periodics [0]; 1248 ev_periodic *w = (ev_periodic *)periodics [0];
947 1249
948 assert (("inactive timer on periodic heap detected", ev_is_active (w))); 1250 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
949 1251
950 /* first reschedule or stop timer */ 1252 /* first reschedule or stop timer */
951 if (w->interval) 1253 if (w->reschedule_cb)
952 { 1254 {
1255 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1256 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1257 downheap (periodics, periodiccnt, 0);
1258 }
1259 else if (w->interval)
1260 {
953 ((WT)w)->at += floor ((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;
954 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > rt_now)); 1263 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
955 downheap ((WT *)periodics, periodiccnt, 0); 1264 downheap (periodics, periodiccnt, 0);
956 } 1265 }
957 else 1266 else
958 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 1267 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
959 1268
960 event (EV_A_ (W)w, EV_PERIODIC); 1269 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
961 } 1270 }
962} 1271}
963 1272
964static void 1273static void noinline
965periodics_reschedule (EV_P) 1274periodics_reschedule (EV_P)
966{ 1275{
967 int i; 1276 int i;
968 1277
969 /* adjust periodics after time jump */ 1278 /* adjust periodics after time jump */
970 for (i = 0; i < periodiccnt; ++i) 1279 for (i = 0; i < periodiccnt; ++i)
971 { 1280 {
972 struct ev_periodic *w = periodics [i]; 1281 ev_periodic *w = (ev_periodic *)periodics [i];
973 1282
1283 if (w->reschedule_cb)
1284 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
974 if (w->interval) 1285 else if (w->interval)
1286 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1287 }
1288
1289 /* now rebuild the heap */
1290 for (i = periodiccnt >> 1; i--; )
1291 downheap (periodics, periodiccnt, i);
1292}
1293#endif
1294
1295#if EV_IDLE_ENABLE
1296void inline_size
1297idle_reify (EV_P)
1298{
1299 if (expect_false (idleall))
1300 {
1301 int pri;
1302
1303 for (pri = NUMPRI; pri--; )
975 { 1304 {
976 ev_tstamp diff = ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval; 1305 if (pendingcnt [pri])
1306 break;
977 1307
978 if (fabs (diff) >= 1e-4) 1308 if (idlecnt [pri])
979 { 1309 {
980 ev_periodic_stop (EV_A_ w); 1310 queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
981 ev_periodic_start (EV_A_ w); 1311 break;
982
983 i = 0; /* restart loop, inefficient, but time jumps should be rare */
984 } 1312 }
985 } 1313 }
986 } 1314 }
987} 1315}
1316#endif
988 1317
989inline int 1318void inline_speed
990time_update_monotonic (EV_P) 1319time_update (EV_P_ ev_tstamp max_block)
991{
992 mn_now = get_clock ();
993
994 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
995 {
996 rt_now = rtmn_diff + mn_now;
997 return 0;
998 }
999 else
1000 {
1001 now_floor = mn_now;
1002 rt_now = ev_time ();
1003 return 1;
1004 }
1005}
1006
1007static void
1008time_update (EV_P)
1009{ 1320{
1010 int i; 1321 int i;
1011 1322
1012#if EV_USE_MONOTONIC 1323#if EV_USE_MONOTONIC
1013 if (expect_true (have_monotonic)) 1324 if (expect_true (have_monotonic))
1014 { 1325 {
1015 if (time_update_monotonic (EV_A)) 1326 ev_tstamp odiff = rtmn_diff;
1327
1328 mn_now = get_clock ();
1329
1330 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
1331 /* interpolate in the meantime */
1332 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1016 { 1333 {
1017 ev_tstamp odiff = rtmn_diff; 1334 ev_rt_now = rtmn_diff + mn_now;
1335 return;
1336 }
1018 1337
1338 now_floor = mn_now;
1339 ev_rt_now = ev_time ();
1340
1019 for (i = 4; --i; ) /* loop a few times, before making important decisions */ 1341 /* loop a few times, before making important decisions.
1342 * on the choice of "4": one iteration isn't enough,
1343 * in case we get preempted during the calls to
1344 * ev_time and get_clock. a second call is almost guaranteed
1345 * to succeed in that case, though. and looping a few more times
1346 * doesn't hurt either as we only do this on time-jumps or
1347 * in the unlikely event of having been preempted here.
1348 */
1349 for (i = 4; --i; )
1020 { 1350 {
1021 rtmn_diff = rt_now - mn_now; 1351 rtmn_diff = ev_rt_now - mn_now;
1022 1352
1023 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) 1353 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1024 return; /* all is well */ 1354 return; /* all is well */
1025 1355
1026 rt_now = ev_time (); 1356 ev_rt_now = ev_time ();
1027 mn_now = get_clock (); 1357 mn_now = get_clock ();
1028 now_floor = mn_now; 1358 now_floor = mn_now;
1029 } 1359 }
1030 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
1031 periodics_reschedule (EV_A); 1375 periodics_reschedule (EV_A);
1032 /* no timer adjustment, as the monotonic clock doesn't jump */ 1376#endif
1033 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */ 1377 /* adjust timers. this is easy, as the offset is the same for all of them */
1378 for (i = 0; i < timercnt; ++i)
1379 ((WT)timers [i])->at += ev_rt_now - mn_now;
1034 } 1380 }
1035 }
1036 else
1037#endif
1038 {
1039 rt_now = ev_time ();
1040 1381
1041 if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
1042 {
1043 periodics_reschedule (EV_A);
1044
1045 /* adjust timers. this is easy, as the offset is the same for all */
1046 for (i = 0; i < timercnt; ++i)
1047 ((WT)timers [i])->at += rt_now - mn_now;
1048 }
1049
1050 mn_now = rt_now; 1382 mn_now = ev_rt_now;
1051 } 1383 }
1052} 1384}
1053 1385
1054void 1386void
1055ev_ref (EV_P) 1387ev_ref (EV_P)
… …
1066static int loop_done; 1398static int loop_done;
1067 1399
1068void 1400void
1069ev_loop (EV_P_ int flags) 1401ev_loop (EV_P_ int flags)
1070{ 1402{
1071 double block;
1072 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 */
1073 1408
1074 do 1409 do
1075 { 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
1076 /* queue check watchers (and execute them) */ 1430 /* queue prepare watchers (and execute them) */
1077 if (expect_false (preparecnt)) 1431 if (expect_false (preparecnt))
1078 { 1432 {
1079 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 1433 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1080 call_pending (EV_A); 1434 call_pending (EV_A);
1081 } 1435 }
1082 1436
1437 if (expect_false (!activecnt))
1438 break;
1439
1083 /* we might have forked, so reify kernel state if necessary */ 1440 /* we might have forked, so reify kernel state if necessary */
1084 if (expect_false (postfork)) 1441 if (expect_false (postfork))
1085 loop_fork (EV_A); 1442 loop_fork (EV_A);
1086 1443
1087 /* update fd-related kernel structures */ 1444 /* update fd-related kernel structures */
1088 fd_reify (EV_A); 1445 fd_reify (EV_A);
1089 1446
1090 /* calculate blocking time */ 1447 /* calculate blocking time */
1448 {
1449 ev_tstamp block;
1091 1450
1092 /* we only need this for !monotonic clockor timers, but as we basically 1451 if (expect_false (flags & EVLOOP_NONBLOCK || idleall || !activecnt))
1093 always have timers, we just calculate it always */ 1452 block = 0.; /* do not block at all */
1094#if EV_USE_MONOTONIC
1095 if (expect_true (have_monotonic))
1096 time_update_monotonic (EV_A);
1097 else 1453 else
1098#endif
1099 { 1454 {
1100 rt_now = ev_time (); 1455 /* update time to cancel out callback processing overhead */
1101 mn_now = rt_now; 1456 time_update (EV_A_ 1e100);
1102 }
1103 1457
1104 if (flags & EVLOOP_NONBLOCK || idlecnt)
1105 block = 0.;
1106 else
1107 {
1108 block = MAX_BLOCKTIME; 1458 block = MAX_BLOCKTIME;
1109 1459
1110 if (timercnt) 1460 if (timercnt)
1111 { 1461 {
1112 ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge; 1462 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1113 if (block > to) block = to; 1463 if (block > to) block = to;
1114 } 1464 }
1115 1465
1466#if EV_PERIODIC_ENABLE
1116 if (periodiccnt) 1467 if (periodiccnt)
1117 { 1468 {
1118 ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge; 1469 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1119 if (block > to) block = to; 1470 if (block > to) block = to;
1120 } 1471 }
1472#endif
1121 1473
1122 if (block < 0.) block = 0.; 1474 if (expect_false (block < 0.)) block = 0.;
1123 } 1475 }
1124 1476
1477 ++loop_count;
1125 method_poll (EV_A_ block); 1478 backend_poll (EV_A_ block);
1126 1479
1127 /* update rt_now, do magic */ 1480 /* update ev_rt_now, do magic */
1128 time_update (EV_A); 1481 time_update (EV_A_ block);
1482 }
1129 1483
1130 /* queue pending timers and reschedule them */ 1484 /* queue pending timers and reschedule them */
1131 timers_reify (EV_A); /* relative timers called last */ 1485 timers_reify (EV_A); /* relative timers called last */
1486#if EV_PERIODIC_ENABLE
1132 periodics_reify (EV_A); /* absolute timers called first */ 1487 periodics_reify (EV_A); /* absolute timers called first */
1488#endif
1133 1489
1490#if EV_IDLE_ENABLE
1134 /* queue idle watchers unless io or timers are pending */ 1491 /* queue idle watchers unless other events are pending */
1135 if (!pendingcnt) 1492 idle_reify (EV_A);
1136 queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); 1493#endif
1137 1494
1138 /* queue check watchers, to be executed first */ 1495 /* queue check watchers, to be executed first */
1139 if (checkcnt) 1496 if (expect_false (checkcnt))
1140 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 1497 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1141 1498
1142 call_pending (EV_A); 1499 call_pending (EV_A);
1500
1143 } 1501 }
1144 while (activecnt && !loop_done); 1502 while (expect_true (activecnt && !loop_done));
1145 1503
1146 if (loop_done != 2) 1504 if (loop_done == EVUNLOOP_ONE)
1147 loop_done = 0; 1505 loop_done = EVUNLOOP_CANCEL;
1148} 1506}
1149 1507
1150void 1508void
1151ev_unloop (EV_P_ int how) 1509ev_unloop (EV_P_ int how)
1152{ 1510{
1153 loop_done = how; 1511 loop_done = how;
1154} 1512}
1155 1513
1156/*****************************************************************************/ 1514/*****************************************************************************/
1157 1515
1158inline void 1516void inline_size
1159wlist_add (WL *head, WL elem) 1517wlist_add (WL *head, WL elem)
1160{ 1518{
1161 elem->next = *head; 1519 elem->next = *head;
1162 *head = elem; 1520 *head = elem;
1163} 1521}
1164 1522
1165inline void 1523void inline_size
1166wlist_del (WL *head, WL elem) 1524wlist_del (WL *head, WL elem)
1167{ 1525{
1168 while (*head) 1526 while (*head)
1169 { 1527 {
1170 if (*head == elem) 1528 if (*head == elem)
… …
1175 1533
1176 head = &(*head)->next; 1534 head = &(*head)->next;
1177 } 1535 }
1178} 1536}
1179 1537
1180inline void 1538void inline_speed
1181ev_clear_pending (EV_P_ W w) 1539clear_pending (EV_P_ W w)
1182{ 1540{
1183 if (w->pending) 1541 if (w->pending)
1184 { 1542 {
1185 pendings [ABSPRI (w)][w->pending - 1].w = 0; 1543 pendings [ABSPRI (w)][w->pending - 1].w = 0;
1186 w->pending = 0; 1544 w->pending = 0;
1187 } 1545 }
1188} 1546}
1189 1547
1190inline 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
1191ev_start (EV_P_ W w, int active) 1575ev_start (EV_P_ W w, int active)
1192{ 1576{
1193 if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; 1577 pri_adjust (EV_A_ w);
1194 if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1195
1196 w->active = active; 1578 w->active = active;
1197 ev_ref (EV_A); 1579 ev_ref (EV_A);
1198} 1580}
1199 1581
1200inline void 1582void inline_size
1201ev_stop (EV_P_ W w) 1583ev_stop (EV_P_ W w)
1202{ 1584{
1203 ev_unref (EV_A); 1585 ev_unref (EV_A);
1204 w->active = 0; 1586 w->active = 0;
1205} 1587}
1206 1588
1207/*****************************************************************************/ 1589/*****************************************************************************/
1208 1590
1209void 1591void noinline
1210ev_io_start (EV_P_ struct ev_io *w) 1592ev_io_start (EV_P_ ev_io *w)
1211{ 1593{
1212 int fd = w->fd; 1594 int fd = w->fd;
1213 1595
1214 if (ev_is_active (w)) 1596 if (expect_false (ev_is_active (w)))
1215 return; 1597 return;
1216 1598
1217 assert (("ev_io_start called with negative fd", fd >= 0)); 1599 assert (("ev_io_start called with negative fd", fd >= 0));
1218 1600
1219 ev_start (EV_A_ (W)w, 1); 1601 ev_start (EV_A_ (W)w, 1);
1220 array_needsize (anfds, anfdmax, fd + 1, anfds_init); 1602 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1221 wlist_add ((WL *)&anfds[fd].head, (WL)w); 1603 wlist_add (&anfds[fd].head, (WL)w);
1222 1604
1223 fd_change (EV_A_ fd); 1605 fd_change (EV_A_ fd, w->events & EV_IOFDSET);
1606 w->events &= ~ EV_IOFDSET;
1224} 1607}
1225 1608
1226void 1609void noinline
1227ev_io_stop (EV_P_ struct ev_io *w) 1610ev_io_stop (EV_P_ ev_io *w)
1228{ 1611{
1229 ev_clear_pending (EV_A_ (W)w); 1612 clear_pending (EV_A_ (W)w);
1230 if (!ev_is_active (w)) 1613 if (expect_false (!ev_is_active (w)))
1231 return; 1614 return;
1232 1615
1616 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1617
1233 wlist_del ((WL *)&anfds[w->fd].head, (WL)w); 1618 wlist_del (&anfds[w->fd].head, (WL)w);
1234 ev_stop (EV_A_ (W)w); 1619 ev_stop (EV_A_ (W)w);
1235 1620
1236 fd_change (EV_A_ w->fd); 1621 fd_change (EV_A_ w->fd, 0);
1237} 1622}
1238 1623
1239void 1624void noinline
1240ev_timer_start (EV_P_ struct ev_timer *w) 1625ev_timer_start (EV_P_ ev_timer *w)
1241{ 1626{
1242 if (ev_is_active (w)) 1627 if (expect_false (ev_is_active (w)))
1243 return; 1628 return;
1244 1629
1245 ((WT)w)->at += mn_now; 1630 ((WT)w)->at += mn_now;
1246 1631
1247 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 1632 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1248 1633
1249 ev_start (EV_A_ (W)w, ++timercnt); 1634 ev_start (EV_A_ (W)w, ++timercnt);
1250 array_needsize (timers, timermax, timercnt, (void)); 1635 array_needsize (WT, timers, timermax, timercnt, EMPTY2);
1251 timers [timercnt - 1] = w; 1636 timers [timercnt - 1] = (WT)w;
1252 upheap ((WT *)timers, timercnt - 1); 1637 upheap (timers, timercnt - 1);
1253 1638
1254 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 1639 /*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
1255} 1640}
1256 1641
1257void 1642void noinline
1258ev_timer_stop (EV_P_ struct ev_timer *w) 1643ev_timer_stop (EV_P_ ev_timer *w)
1259{ 1644{
1260 ev_clear_pending (EV_A_ (W)w); 1645 clear_pending (EV_A_ (W)w);
1261 if (!ev_is_active (w)) 1646 if (expect_false (!ev_is_active (w)))
1262 return; 1647 return;
1263 1648
1264 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 1649 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w));
1265 1650
1266 if (((W)w)->active < timercnt--) 1651 {
1652 int active = ((W)w)->active;
1653
1654 if (expect_true (--active < --timercnt))
1267 { 1655 {
1268 timers [((W)w)->active - 1] = timers [timercnt]; 1656 timers [active] = timers [timercnt];
1269 downheap ((WT *)timers, timercnt, ((W)w)->active - 1); 1657 adjustheap (timers, timercnt, active);
1270 } 1658 }
1659 }
1271 1660
1272 ((WT)w)->at = w->repeat; 1661 ((WT)w)->at -= mn_now;
1273 1662
1274 ev_stop (EV_A_ (W)w); 1663 ev_stop (EV_A_ (W)w);
1275} 1664}
1276 1665
1277void 1666void noinline
1278ev_timer_again (EV_P_ struct ev_timer *w) 1667ev_timer_again (EV_P_ ev_timer *w)
1279{ 1668{
1280 if (ev_is_active (w)) 1669 if (ev_is_active (w))
1281 { 1670 {
1282 if (w->repeat) 1671 if (w->repeat)
1283 { 1672 {
1284 ((WT)w)->at = mn_now + w->repeat; 1673 ((WT)w)->at = mn_now + w->repeat;
1285 downheap ((WT *)timers, timercnt, ((W)w)->active - 1); 1674 adjustheap (timers, timercnt, ((W)w)->active - 1);
1286 } 1675 }
1287 else 1676 else
1288 ev_timer_stop (EV_A_ w); 1677 ev_timer_stop (EV_A_ w);
1289 } 1678 }
1290 else if (w->repeat) 1679 else if (w->repeat)
1680 {
1681 w->at = w->repeat;
1291 ev_timer_start (EV_A_ w); 1682 ev_timer_start (EV_A_ w);
1683 }
1292} 1684}
1293 1685
1294void 1686#if EV_PERIODIC_ENABLE
1687void noinline
1295ev_periodic_start (EV_P_ struct ev_periodic *w) 1688ev_periodic_start (EV_P_ ev_periodic *w)
1296{ 1689{
1297 if (ev_is_active (w)) 1690 if (expect_false (ev_is_active (w)))
1298 return; 1691 return;
1299 1692
1693 if (w->reschedule_cb)
1694 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1695 else if (w->interval)
1696 {
1300 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.));
1301
1302 /* 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 */
1303 if (w->interval)
1304 ((WT)w)->at += ceil ((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;
1700 }
1701 else
1702 ((WT)w)->at = w->offset;
1305 1703
1306 ev_start (EV_A_ (W)w, ++periodiccnt); 1704 ev_start (EV_A_ (W)w, ++periodiccnt);
1307 array_needsize (periodics, periodicmax, periodiccnt, (void)); 1705 array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2);
1308 periodics [periodiccnt - 1] = w; 1706 periodics [periodiccnt - 1] = (WT)w;
1309 upheap ((WT *)periodics, periodiccnt - 1); 1707 upheap (periodics, periodiccnt - 1);
1310 1708
1311 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1709 /*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
1312} 1710}
1313 1711
1314void 1712void noinline
1315ev_periodic_stop (EV_P_ struct ev_periodic *w) 1713ev_periodic_stop (EV_P_ ev_periodic *w)
1316{ 1714{
1317 ev_clear_pending (EV_A_ (W)w); 1715 clear_pending (EV_A_ (W)w);
1318 if (!ev_is_active (w)) 1716 if (expect_false (!ev_is_active (w)))
1319 return; 1717 return;
1320 1718
1321 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1719 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w));
1322 1720
1323 if (((W)w)->active < periodiccnt--) 1721 {
1722 int active = ((W)w)->active;
1723
1724 if (expect_true (--active < --periodiccnt))
1324 { 1725 {
1325 periodics [((W)w)->active - 1] = periodics [periodiccnt]; 1726 periodics [active] = periodics [periodiccnt];
1326 downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1); 1727 adjustheap (periodics, periodiccnt, active);
1327 } 1728 }
1729 }
1328 1730
1329 ev_stop (EV_A_ (W)w); 1731 ev_stop (EV_A_ (W)w);
1330} 1732}
1331 1733
1332void 1734void noinline
1333ev_idle_start (EV_P_ struct ev_idle *w) 1735ev_periodic_again (EV_P_ ev_periodic *w)
1334{ 1736{
1335 if (ev_is_active (w)) 1737 /* TODO: use adjustheap and recalculation */
1336 return;
1337
1338 ev_start (EV_A_ (W)w, ++idlecnt);
1339 array_needsize (idles, idlemax, idlecnt, (void));
1340 idles [idlecnt - 1] = w;
1341}
1342
1343void
1344ev_idle_stop (EV_P_ struct ev_idle *w)
1345{
1346 ev_clear_pending (EV_A_ (W)w);
1347 if (ev_is_active (w))
1348 return;
1349
1350 idles [((W)w)->active - 1] = idles [--idlecnt];
1351 ev_stop (EV_A_ (W)w); 1738 ev_periodic_stop (EV_A_ w);
1739 ev_periodic_start (EV_A_ w);
1352} 1740}
1353 1741#endif
1354void
1355ev_prepare_start (EV_P_ struct ev_prepare *w)
1356{
1357 if (ev_is_active (w))
1358 return;
1359
1360 ev_start (EV_A_ (W)w, ++preparecnt);
1361 array_needsize (prepares, preparemax, preparecnt, (void));
1362 prepares [preparecnt - 1] = w;
1363}
1364
1365void
1366ev_prepare_stop (EV_P_ struct ev_prepare *w)
1367{
1368 ev_clear_pending (EV_A_ (W)w);
1369 if (ev_is_active (w))
1370 return;
1371
1372 prepares [((W)w)->active - 1] = prepares [--preparecnt];
1373 ev_stop (EV_A_ (W)w);
1374}
1375
1376void
1377ev_check_start (EV_P_ struct ev_check *w)
1378{
1379 if (ev_is_active (w))
1380 return;
1381
1382 ev_start (EV_A_ (W)w, ++checkcnt);
1383 array_needsize (checks, checkmax, checkcnt, (void));
1384 checks [checkcnt - 1] = w;
1385}
1386
1387void
1388ev_check_stop (EV_P_ struct ev_check *w)
1389{
1390 ev_clear_pending (EV_A_ (W)w);
1391 if (ev_is_active (w))
1392 return;
1393
1394 checks [((W)w)->active - 1] = checks [--checkcnt];
1395 ev_stop (EV_A_ (W)w);
1396}
1397 1742
1398#ifndef SA_RESTART 1743#ifndef SA_RESTART
1399# define SA_RESTART 0 1744# define SA_RESTART 0
1400#endif 1745#endif
1401 1746
1402void 1747void noinline
1403ev_signal_start (EV_P_ struct ev_signal *w) 1748ev_signal_start (EV_P_ ev_signal *w)
1404{ 1749{
1405#if EV_MULTIPLICITY 1750#if EV_MULTIPLICITY
1406 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));
1407#endif 1752#endif
1408 if (ev_is_active (w)) 1753 if (expect_false (ev_is_active (w)))
1409 return; 1754 return;
1410 1755
1411 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));
1412 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
1413 ev_start (EV_A_ (W)w, 1); 1772 ev_start (EV_A_ (W)w, 1);
1414 array_needsize (signals, signalmax, w->signum, signals_init);
1415 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); 1773 wlist_add (&signals [w->signum - 1].head, (WL)w);
1416 1774
1417 if (!((WL)w)->next) 1775 if (!((WL)w)->next)
1418 { 1776 {
1419#if WIN32 1777#if _WIN32
1420 signal (w->signum, sighandler); 1778 signal (w->signum, sighandler);
1421#else 1779#else
1422 struct sigaction sa; 1780 struct sigaction sa;
1423 sa.sa_handler = sighandler; 1781 sa.sa_handler = sighandler;
1424 sigfillset (&sa.sa_mask); 1782 sigfillset (&sa.sa_mask);
… …
1426 sigaction (w->signum, &sa, 0); 1784 sigaction (w->signum, &sa, 0);
1427#endif 1785#endif
1428 } 1786 }
1429} 1787}
1430 1788
1431void 1789void noinline
1432ev_signal_stop (EV_P_ struct ev_signal *w) 1790ev_signal_stop (EV_P_ ev_signal *w)
1433{ 1791{
1434 ev_clear_pending (EV_A_ (W)w); 1792 clear_pending (EV_A_ (W)w);
1435 if (!ev_is_active (w)) 1793 if (expect_false (!ev_is_active (w)))
1436 return; 1794 return;
1437 1795
1438 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); 1796 wlist_del (&signals [w->signum - 1].head, (WL)w);
1439 ev_stop (EV_A_ (W)w); 1797 ev_stop (EV_A_ (W)w);
1440 1798
1441 if (!signals [w->signum - 1].head) 1799 if (!signals [w->signum - 1].head)
1442 signal (w->signum, SIG_DFL); 1800 signal (w->signum, SIG_DFL);
1443} 1801}
1444 1802
1445void 1803void
1446ev_child_start (EV_P_ struct ev_child *w) 1804ev_child_start (EV_P_ ev_child *w)
1447{ 1805{
1448#if EV_MULTIPLICITY 1806#if EV_MULTIPLICITY
1449 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));
1450#endif 1808#endif
1451 if (ev_is_active (w)) 1809 if (expect_false (ev_is_active (w)))
1452 return; 1810 return;
1453 1811
1454 ev_start (EV_A_ (W)w, 1); 1812 ev_start (EV_A_ (W)w, 1);
1455 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1813 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1456} 1814}
1457 1815
1458void 1816void
1459ev_child_stop (EV_P_ struct ev_child *w) 1817ev_child_stop (EV_P_ ev_child *w)
1460{ 1818{
1461 ev_clear_pending (EV_A_ (W)w); 1819 clear_pending (EV_A_ (W)w);
1462 if (ev_is_active (w)) 1820 if (expect_false (!ev_is_active (w)))
1463 return; 1821 return;
1464 1822
1465 wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1823 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1466 ev_stop (EV_A_ (W)w); 1824 ev_stop (EV_A_ (W)w);
1467} 1825}
1468 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
1469/*****************************************************************************/ 2249/*****************************************************************************/
1470 2250
1471struct ev_once 2251struct ev_once
1472{ 2252{
1473 struct ev_io io; 2253 ev_io io;
1474 struct ev_timer to; 2254 ev_timer to;
1475 void (*cb)(int revents, void *arg); 2255 void (*cb)(int revents, void *arg);
1476 void *arg; 2256 void *arg;
1477}; 2257};
1478 2258
1479static void 2259static void
… …
1488 2268
1489 cb (revents, arg); 2269 cb (revents, arg);
1490} 2270}
1491 2271
1492static void 2272static void
1493once_cb_io (EV_P_ struct ev_io *w, int revents) 2273once_cb_io (EV_P_ ev_io *w, int revents)
1494{ 2274{
1495 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);
1496} 2276}
1497 2277
1498static void 2278static void
1499once_cb_to (EV_P_ struct ev_timer *w, int revents) 2279once_cb_to (EV_P_ ev_timer *w, int revents)
1500{ 2280{
1501 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);
1502} 2282}
1503 2283
1504void 2284void
1505ev_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)
1506{ 2286{
1507 struct ev_once *once = ev_malloc (sizeof (struct ev_once)); 2287 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1508 2288
1509 if (!once) 2289 if (expect_false (!once))
2290 {
1510 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 2291 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1511 else 2292 return;
1512 { 2293 }
2294
1513 once->cb = cb; 2295 once->cb = cb;
1514 once->arg = arg; 2296 once->arg = arg;
1515 2297
1516 ev_watcher_init (&once->io, once_cb_io); 2298 ev_init (&once->io, once_cb_io);
1517 if (fd >= 0) 2299 if (fd >= 0)
1518 { 2300 {
1519 ev_io_set (&once->io, fd, events); 2301 ev_io_set (&once->io, fd, events);
1520 ev_io_start (EV_A_ &once->io); 2302 ev_io_start (EV_A_ &once->io);
1521 } 2303 }
1522 2304
1523 ev_watcher_init (&once->to, once_cb_to); 2305 ev_init (&once->to, once_cb_to);
1524 if (timeout >= 0.) 2306 if (timeout >= 0.)
1525 { 2307 {
1526 ev_timer_set (&once->to, timeout, 0.); 2308 ev_timer_set (&once->to, timeout, 0.);
1527 ev_timer_start (EV_A_ &once->to); 2309 ev_timer_start (EV_A_ &once->to);
1528 }
1529 } 2310 }
1530} 2311}
1531 2312
2313#ifdef __cplusplus
2314}
2315#endif
2316

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