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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 1.177 by root, Tue Dec 11 15:06:50 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_size
482queue_events (EV_P_ W *events, int eventcnt, int type)
483{
484 int i;
485
486 for (i = 0; i < eventcnt; ++i)
487 ev_feed_event (EV_A_ events [i], type);
488}
489
490/*****************************************************************************/
491
492void inline_size
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)
395{ 563{
396 if (anfds [fd].reify) 564 if (expect_false (anfds [fd].reify))
397 return; 565 return;
398 566
399 anfds [fd].reify = 1; 567 anfds [fd].reify = 1;
400 568
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;
404} 572}
405 573
406static void 574void inline_speed
407fd_kill (EV_P_ int fd) 575fd_kill (EV_P_ int fd)
408{ 576{
409 struct ev_io *w; 577 ev_io *w;
410 578
411 while ((w = (struct ev_io *)anfds [fd].head)) 579 while ((w = (ev_io *)anfds [fd].head))
412 { 580 {
413 ev_io_stop (EV_A_ w); 581 ev_io_stop (EV_A_ w);
414 event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 582 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
415 } 583 }
416} 584}
417 585
418static int 586int inline_size
419fd_valid (int fd) 587fd_valid (int fd)
420{ 588{
421#ifdef WIN32 589#ifdef _WIN32
422 return !!win32_get_osfhandle (fd); 590 return _get_osfhandle (fd) != -1;
423#else 591#else
424 return fcntl (fd, F_GETFD) != -1; 592 return fcntl (fd, F_GETFD) != -1;
425#endif 593#endif
426} 594}
427 595
428/* called on EBADF to verify fds */ 596/* called on EBADF to verify fds */
429static void 597static void noinline
430fd_ebadf (EV_P) 598fd_ebadf (EV_P)
431{ 599{
432 int fd; 600 int fd;
433 601
434 for (fd = 0; fd < anfdmax; ++fd) 602 for (fd = 0; fd < anfdmax; ++fd)
… …
436 if (!fd_valid (fd) == -1 && errno == EBADF) 604 if (!fd_valid (fd) == -1 && errno == EBADF)
437 fd_kill (EV_A_ fd); 605 fd_kill (EV_A_ fd);
438} 606}
439 607
440/* called on ENOMEM in select/poll to kill some fds and retry */ 608/* called on ENOMEM in select/poll to kill some fds and retry */
441static void 609static void noinline
442fd_enomem (EV_P) 610fd_enomem (EV_P)
443{ 611{
444 int fd; 612 int fd;
445 613
446 for (fd = anfdmax; fd--; ) 614 for (fd = anfdmax; fd--; )
… …
449 fd_kill (EV_A_ fd); 617 fd_kill (EV_A_ fd);
450 return; 618 return;
451 } 619 }
452} 620}
453 621
454/* usually called after fork if method needs to re-arm all fds from scratch */ 622/* usually called after fork if backend needs to re-arm all fds from scratch */
455static void 623static void noinline
456fd_rearm_all (EV_P) 624fd_rearm_all (EV_P)
457{ 625{
458 int fd; 626 int fd;
459 627
460 /* this should be highly optimised to not do anything but set a flag */
461 for (fd = 0; fd < anfdmax; ++fd) 628 for (fd = 0; fd < anfdmax; ++fd)
462 if (anfds [fd].events) 629 if (anfds [fd].events)
463 { 630 {
464 anfds [fd].events = 0; 631 anfds [fd].events = 0;
465 fd_change (EV_A_ fd); 632 fd_change (EV_A_ fd);
466 } 633 }
467} 634}
468 635
469/*****************************************************************************/ 636/*****************************************************************************/
470 637
471static void 638void inline_speed
472upheap (WT *heap, int k) 639upheap (WT *heap, int k)
473{ 640{
474 WT w = heap [k]; 641 WT w = heap [k];
475 642
476 while (k && heap [k >> 1]->at > w->at) 643 while (k && heap [k >> 1]->at > w->at)
… …
483 heap [k] = w; 650 heap [k] = w;
484 ((W)heap [k])->active = k + 1; 651 ((W)heap [k])->active = k + 1;
485 652
486} 653}
487 654
488static void 655void inline_speed
489downheap (WT *heap, int N, int k) 656downheap (WT *heap, int N, int k)
490{ 657{
491 WT w = heap [k]; 658 WT w = heap [k];
492 659
493 while (k < (N >> 1)) 660 while (k < (N >> 1))
… …
507 674
508 heap [k] = w; 675 heap [k] = w;
509 ((W)heap [k])->active = k + 1; 676 ((W)heap [k])->active = k + 1;
510} 677}
511 678
679void inline_size
680adjustheap (WT *heap, int N, int k)
681{
682 upheap (heap, k);
683 downheap (heap, N, k);
684}
685
512/*****************************************************************************/ 686/*****************************************************************************/
513 687
514typedef struct 688typedef struct
515{ 689{
516 WL head; 690 WL head;
… …
520static ANSIG *signals; 694static ANSIG *signals;
521static int signalmax; 695static int signalmax;
522 696
523static int sigpipe [2]; 697static int sigpipe [2];
524static sig_atomic_t volatile gotsig; 698static sig_atomic_t volatile gotsig;
525static struct ev_io sigev; 699static ev_io sigev;
526 700
527static void 701void inline_size
528signals_init (ANSIG *base, int count) 702signals_init (ANSIG *base, int count)
529{ 703{
530 while (count--) 704 while (count--)
531 { 705 {
532 base->head = 0; 706 base->head = 0;
… …
537} 711}
538 712
539static void 713static void
540sighandler (int signum) 714sighandler (int signum)
541{ 715{
542#if WIN32 716#if _WIN32
543 signal (signum, sighandler); 717 signal (signum, sighandler);
544#endif 718#endif
545 719
546 signals [signum - 1].gotsig = 1; 720 signals [signum - 1].gotsig = 1;
547 721
… …
552 write (sigpipe [1], &signum, 1); 726 write (sigpipe [1], &signum, 1);
553 errno = old_errno; 727 errno = old_errno;
554 } 728 }
555} 729}
556 730
731void noinline
732ev_feed_signal_event (EV_P_ int signum)
733{
734 WL w;
735
736#if EV_MULTIPLICITY
737 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
738#endif
739
740 --signum;
741
742 if (signum < 0 || signum >= signalmax)
743 return;
744
745 signals [signum].gotsig = 0;
746
747 for (w = signals [signum].head; w; w = w->next)
748 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
749}
750
557static void 751static void
558sigcb (EV_P_ struct ev_io *iow, int revents) 752sigcb (EV_P_ ev_io *iow, int revents)
559{ 753{
560 WL w;
561 int signum; 754 int signum;
562 755
563 read (sigpipe [0], &revents, 1); 756 read (sigpipe [0], &revents, 1);
564 gotsig = 0; 757 gotsig = 0;
565 758
566 for (signum = signalmax; signum--; ) 759 for (signum = signalmax; signum--; )
567 if (signals [signum].gotsig) 760 if (signals [signum].gotsig)
568 { 761 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} 762}
575 763
576static void 764void inline_speed
765fd_intern (int fd)
766{
767#ifdef _WIN32
768 int arg = 1;
769 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
770#else
771 fcntl (fd, F_SETFD, FD_CLOEXEC);
772 fcntl (fd, F_SETFL, O_NONBLOCK);
773#endif
774}
775
776static void noinline
577siginit (EV_P) 777siginit (EV_P)
578{ 778{
579#ifndef WIN32 779 fd_intern (sigpipe [0]);
580 fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC); 780 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
587 781
588 ev_io_set (&sigev, sigpipe [0], EV_READ); 782 ev_io_set (&sigev, sigpipe [0], EV_READ);
589 ev_io_start (EV_A_ &sigev); 783 ev_io_start (EV_A_ &sigev);
590 ev_unref (EV_A); /* child watcher should not keep loop alive */ 784 ev_unref (EV_A); /* child watcher should not keep loop alive */
591} 785}
592 786
593/*****************************************************************************/ 787/*****************************************************************************/
594 788
595static struct ev_child *childs [PID_HASHSIZE]; 789static ev_child *childs [EV_PID_HASHSIZE];
596 790
597#ifndef WIN32 791#ifndef _WIN32
598 792
599static struct ev_signal childev; 793static ev_signal childev;
794
795void inline_speed
796child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
797{
798 ev_child *w;
799
800 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
801 if (w->pid == pid || !w->pid)
802 {
803 ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */
804 w->rpid = pid;
805 w->rstatus = status;
806 ev_feed_event (EV_A_ (W)w, EV_CHILD);
807 }
808}
600 809
601#ifndef WCONTINUED 810#ifndef WCONTINUED
602# define WCONTINUED 0 811# define WCONTINUED 0
603#endif 812#endif
604 813
605static void 814static 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) 815childcb (EV_P_ ev_signal *sw, int revents)
622{ 816{
623 int pid, status; 817 int pid, status;
624 818
819 /* some systems define WCONTINUED but then fail to support it (linux 2.4) */
625 if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) 820 if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
626 { 821 if (!WCONTINUED
822 || errno != EINVAL
823 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
824 return;
825
627 /* make sure we are called again until all childs have been reaped */ 826 /* make sure we are called again until all childs have been reaped */
827 /* we need to do it this way so that the callback gets called before we continue */
628 event (EV_A_ (W)sw, EV_SIGNAL); 828 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
629 829
630 child_reap (EV_A_ sw, pid, pid, status); 830 child_reap (EV_A_ sw, pid, pid, status);
831 if (EV_PID_HASHSIZE > 1)
631 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */ 832 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
632 }
633} 833}
634 834
635#endif 835#endif
636 836
637/*****************************************************************************/ 837/*****************************************************************************/
638 838
839#if EV_USE_PORT
840# include "ev_port.c"
841#endif
639#if EV_USE_KQUEUE 842#if EV_USE_KQUEUE
640# include "ev_kqueue.c" 843# include "ev_kqueue.c"
641#endif 844#endif
642#if EV_USE_EPOLL 845#if EV_USE_EPOLL
643# include "ev_epoll.c" 846# include "ev_epoll.c"
… …
660{ 863{
661 return EV_VERSION_MINOR; 864 return EV_VERSION_MINOR;
662} 865}
663 866
664/* return true if we are running with elevated privileges and should ignore env variables */ 867/* return true if we are running with elevated privileges and should ignore env variables */
665static int 868int inline_size
666enable_secure (void) 869enable_secure (void)
667{ 870{
668#ifdef WIN32 871#ifdef _WIN32
669 return 0; 872 return 0;
670#else 873#else
671 return getuid () != geteuid () 874 return getuid () != geteuid ()
672 || getgid () != getegid (); 875 || getgid () != getegid ();
673#endif 876#endif
674} 877}
675 878
676int 879unsigned int
677ev_method (EV_P) 880ev_supported_backends (void)
678{ 881{
679 return method; 882 unsigned int flags = 0;
680}
681 883
682static void 884 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
683loop_init (EV_P_ int methods) 885 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
886 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
887 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
888 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
889
890 return flags;
891}
892
893unsigned int
894ev_recommended_backends (void)
684{ 895{
685 if (!method) 896 unsigned int flags = ev_supported_backends ();
897
898#ifndef __NetBSD__
899 /* kqueue is borked on everything but netbsd apparently */
900 /* it usually doesn't work correctly on anything but sockets and pipes */
901 flags &= ~EVBACKEND_KQUEUE;
902#endif
903#ifdef __APPLE__
904 // flags &= ~EVBACKEND_KQUEUE; for documentation
905 flags &= ~EVBACKEND_POLL;
906#endif
907
908 return flags;
909}
910
911unsigned int
912ev_embeddable_backends (void)
913{
914 return EVBACKEND_EPOLL
915 | EVBACKEND_KQUEUE
916 | EVBACKEND_PORT;
917}
918
919unsigned int
920ev_backend (EV_P)
921{
922 return backend;
923}
924
925unsigned int
926ev_loop_count (EV_P)
927{
928 return loop_count;
929}
930
931static void noinline
932loop_init (EV_P_ unsigned int flags)
933{
934 if (!backend)
686 { 935 {
687#if EV_USE_MONOTONIC 936#if EV_USE_MONOTONIC
688 { 937 {
689 struct timespec ts; 938 struct timespec ts;
690 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 939 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
691 have_monotonic = 1; 940 have_monotonic = 1;
692 } 941 }
693#endif 942#endif
694 943
695 rt_now = ev_time (); 944 ev_rt_now = ev_time ();
696 mn_now = get_clock (); 945 mn_now = get_clock ();
697 now_floor = mn_now; 946 now_floor = mn_now;
698 rtmn_diff = rt_now - mn_now; 947 rtmn_diff = ev_rt_now - mn_now;
699 948
700 if (methods == EVMETHOD_AUTO) 949 /* pid check not overridable via env */
701 if (!enable_secure () && getenv ("LIBEV_METHODS")) 950#ifndef _WIN32
951 if (flags & EVFLAG_FORKCHECK)
952 curpid = getpid ();
953#endif
954
955 if (!(flags & EVFLAG_NOENV)
956 && !enable_secure ()
957 && getenv ("LIBEV_FLAGS"))
702 methods = atoi (getenv ("LIBEV_METHODS")); 958 flags = atoi (getenv ("LIBEV_FLAGS"));
703 else
704 methods = EVMETHOD_ANY;
705 959
706 method = 0; 960 if (!(flags & 0x0000ffffUL))
961 flags |= ev_recommended_backends ();
962
963 backend = 0;
964 backend_fd = -1;
707#if EV_USE_WIN32 965#if EV_USE_INOTIFY
708 if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods); 966 fs_fd = -2;
967#endif
968
969#if EV_USE_PORT
970 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
709#endif 971#endif
710#if EV_USE_KQUEUE 972#if EV_USE_KQUEUE
711 if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods); 973 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
712#endif 974#endif
713#if EV_USE_EPOLL 975#if EV_USE_EPOLL
714 if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods); 976 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
715#endif 977#endif
716#if EV_USE_POLL 978#if EV_USE_POLL
717 if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods); 979 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
718#endif 980#endif
719#if EV_USE_SELECT 981#if EV_USE_SELECT
720 if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods); 982 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
721#endif 983#endif
722 984
723 ev_watcher_init (&sigev, sigcb); 985 ev_init (&sigev, sigcb);
724 ev_set_priority (&sigev, EV_MAXPRI); 986 ev_set_priority (&sigev, EV_MAXPRI);
725 } 987 }
726} 988}
727 989
728void 990static void noinline
729loop_destroy (EV_P) 991loop_destroy (EV_P)
730{ 992{
731 int i; 993 int i;
732 994
733#if EV_USE_WIN32 995#if EV_USE_INOTIFY
734 if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A); 996 if (fs_fd >= 0)
997 close (fs_fd);
998#endif
999
1000 if (backend_fd >= 0)
1001 close (backend_fd);
1002
1003#if EV_USE_PORT
1004 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
735#endif 1005#endif
736#if EV_USE_KQUEUE 1006#if EV_USE_KQUEUE
737 if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A); 1007 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
738#endif 1008#endif
739#if EV_USE_EPOLL 1009#if EV_USE_EPOLL
740 if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A); 1010 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
741#endif 1011#endif
742#if EV_USE_POLL 1012#if EV_USE_POLL
743 if (method == EVMETHOD_POLL ) poll_destroy (EV_A); 1013 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
744#endif 1014#endif
745#if EV_USE_SELECT 1015#if EV_USE_SELECT
746 if (method == EVMETHOD_SELECT) select_destroy (EV_A); 1016 if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
747#endif 1017#endif
748 1018
749 for (i = NUMPRI; i--; ) 1019 for (i = NUMPRI; i--; )
1020 {
750 array_free (pending, [i]); 1021 array_free (pending, [i]);
1022#if EV_IDLE_ENABLE
1023 array_free (idle, [i]);
1024#endif
1025 }
751 1026
752 /* have to use the microsoft-never-gets-it-right macro */ 1027 /* have to use the microsoft-never-gets-it-right macro */
753 array_free_microshit (fdchange); 1028 array_free (fdchange, EMPTY);
754 array_free_microshit (timer); 1029 array_free (timer, EMPTY);
755 array_free_microshit (periodic); 1030#if EV_PERIODIC_ENABLE
756 array_free_microshit (idle); 1031 array_free (periodic, EMPTY);
757 array_free_microshit (prepare); 1032#endif
758 array_free_microshit (check); 1033 array_free (prepare, EMPTY);
1034 array_free (check, EMPTY);
759 1035
760 method = 0; 1036 backend = 0;
761} 1037}
762 1038
763static void 1039void inline_size infy_fork (EV_P);
1040
1041void inline_size
764loop_fork (EV_P) 1042loop_fork (EV_P)
765{ 1043{
1044#if EV_USE_PORT
1045 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1046#endif
1047#if EV_USE_KQUEUE
1048 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
1049#endif
766#if EV_USE_EPOLL 1050#if EV_USE_EPOLL
767 if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A); 1051 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
768#endif 1052#endif
769#if EV_USE_KQUEUE 1053#if EV_USE_INOTIFY
770 if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A); 1054 infy_fork (EV_A);
771#endif 1055#endif
772 1056
773 if (ev_is_active (&sigev)) 1057 if (ev_is_active (&sigev))
774 { 1058 {
775 /* default loop */ 1059 /* default loop */
… …
788 postfork = 0; 1072 postfork = 0;
789} 1073}
790 1074
791#if EV_MULTIPLICITY 1075#if EV_MULTIPLICITY
792struct ev_loop * 1076struct ev_loop *
793ev_loop_new (int methods) 1077ev_loop_new (unsigned int flags)
794{ 1078{
795 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 1079 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
796 1080
797 memset (loop, 0, sizeof (struct ev_loop)); 1081 memset (loop, 0, sizeof (struct ev_loop));
798 1082
799 loop_init (EV_A_ methods); 1083 loop_init (EV_A_ flags);
800 1084
801 if (ev_method (EV_A)) 1085 if (ev_backend (EV_A))
802 return loop; 1086 return loop;
803 1087
804 return 0; 1088 return 0;
805} 1089}
806 1090
… …
818} 1102}
819 1103
820#endif 1104#endif
821 1105
822#if EV_MULTIPLICITY 1106#if EV_MULTIPLICITY
823struct ev_loop default_loop_struct;
824static struct ev_loop *default_loop;
825
826struct ev_loop * 1107struct ev_loop *
1108ev_default_loop_init (unsigned int flags)
827#else 1109#else
828static int default_loop;
829
830int 1110int
1111ev_default_loop (unsigned int flags)
831#endif 1112#endif
832ev_default_loop (int methods)
833{ 1113{
834 if (sigpipe [0] == sigpipe [1]) 1114 if (sigpipe [0] == sigpipe [1])
835 if (pipe (sigpipe)) 1115 if (pipe (sigpipe))
836 return 0; 1116 return 0;
837 1117
838 if (!default_loop) 1118 if (!ev_default_loop_ptr)
839 { 1119 {
840#if EV_MULTIPLICITY 1120#if EV_MULTIPLICITY
841 struct ev_loop *loop = default_loop = &default_loop_struct; 1121 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
842#else 1122#else
843 default_loop = 1; 1123 ev_default_loop_ptr = 1;
844#endif 1124#endif
845 1125
846 loop_init (EV_A_ methods); 1126 loop_init (EV_A_ flags);
847 1127
848 if (ev_method (EV_A)) 1128 if (ev_backend (EV_A))
849 { 1129 {
850 siginit (EV_A); 1130 siginit (EV_A);
851 1131
852#ifndef WIN32 1132#ifndef _WIN32
853 ev_signal_init (&childev, childcb, SIGCHLD); 1133 ev_signal_init (&childev, childcb, SIGCHLD);
854 ev_set_priority (&childev, EV_MAXPRI); 1134 ev_set_priority (&childev, EV_MAXPRI);
855 ev_signal_start (EV_A_ &childev); 1135 ev_signal_start (EV_A_ &childev);
856 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1136 ev_unref (EV_A); /* child watcher should not keep loop alive */
857#endif 1137#endif
858 } 1138 }
859 else 1139 else
860 default_loop = 0; 1140 ev_default_loop_ptr = 0;
861 } 1141 }
862 1142
863 return default_loop; 1143 return ev_default_loop_ptr;
864} 1144}
865 1145
866void 1146void
867ev_default_destroy (void) 1147ev_default_destroy (void)
868{ 1148{
869#if EV_MULTIPLICITY 1149#if EV_MULTIPLICITY
870 struct ev_loop *loop = default_loop; 1150 struct ev_loop *loop = ev_default_loop_ptr;
871#endif 1151#endif
872 1152
873#ifndef WIN32 1153#ifndef _WIN32
874 ev_ref (EV_A); /* child watcher */ 1154 ev_ref (EV_A); /* child watcher */
875 ev_signal_stop (EV_A_ &childev); 1155 ev_signal_stop (EV_A_ &childev);
876#endif 1156#endif
877 1157
878 ev_ref (EV_A); /* signal watcher */ 1158 ev_ref (EV_A); /* signal watcher */
… …
886 1166
887void 1167void
888ev_default_fork (void) 1168ev_default_fork (void)
889{ 1169{
890#if EV_MULTIPLICITY 1170#if EV_MULTIPLICITY
891 struct ev_loop *loop = default_loop; 1171 struct ev_loop *loop = ev_default_loop_ptr;
892#endif 1172#endif
893 1173
894 if (method) 1174 if (backend)
895 postfork = 1; 1175 postfork = 1;
896} 1176}
897 1177
898/*****************************************************************************/ 1178/*****************************************************************************/
899 1179
900static void 1180void
1181ev_invoke (EV_P_ void *w, int revents)
1182{
1183 EV_CB_INVOKE ((W)w, revents);
1184}
1185
1186void inline_speed
901call_pending (EV_P) 1187call_pending (EV_P)
902{ 1188{
903 int pri; 1189 int pri;
904 1190
905 for (pri = NUMPRI; pri--; ) 1191 for (pri = NUMPRI; pri--; )
906 while (pendingcnt [pri]) 1192 while (pendingcnt [pri])
907 { 1193 {
908 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 1194 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
909 1195
910 if (p->w) 1196 if (expect_true (p->w))
911 { 1197 {
1198 /*assert (("non-pending watcher on pending list", p->w->pending));*/
1199
912 p->w->pending = 0; 1200 p->w->pending = 0;
913 p->w->cb (EV_A_ p->w, p->events); 1201 EV_CB_INVOKE (p->w, p->events);
914 } 1202 }
915 } 1203 }
916} 1204}
917 1205
918static void 1206void inline_size
919timers_reify (EV_P) 1207timers_reify (EV_P)
920{ 1208{
921 while (timercnt && ((WT)timers [0])->at <= mn_now) 1209 while (timercnt && ((WT)timers [0])->at <= mn_now)
922 { 1210 {
923 struct ev_timer *w = timers [0]; 1211 ev_timer *w = timers [0];
924 1212
925 assert (("inactive timer on timer heap detected", ev_is_active (w))); 1213 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
926 1214
927 /* first reschedule or stop timer */ 1215 /* first reschedule or stop timer */
928 if (w->repeat) 1216 if (w->repeat)
929 { 1217 {
930 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 1218 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1219
931 ((WT)w)->at = mn_now + w->repeat; 1220 ((WT)w)->at += w->repeat;
1221 if (((WT)w)->at < mn_now)
1222 ((WT)w)->at = mn_now;
1223
932 downheap ((WT *)timers, timercnt, 0); 1224 downheap ((WT *)timers, timercnt, 0);
933 } 1225 }
934 else 1226 else
935 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ 1227 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
936 1228
937 event (EV_A_ (W)w, EV_TIMEOUT); 1229 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
938 } 1230 }
939} 1231}
940 1232
941static void 1233#if EV_PERIODIC_ENABLE
1234void inline_size
942periodics_reify (EV_P) 1235periodics_reify (EV_P)
943{ 1236{
944 while (periodiccnt && ((WT)periodics [0])->at <= rt_now) 1237 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
945 { 1238 {
946 struct ev_periodic *w = periodics [0]; 1239 ev_periodic *w = periodics [0];
947 1240
948 assert (("inactive timer on periodic heap detected", ev_is_active (w))); 1241 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
949 1242
950 /* first reschedule or stop timer */ 1243 /* first reschedule or stop timer */
951 if (w->interval) 1244 if (w->reschedule_cb)
952 { 1245 {
1246 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1247 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1248 downheap ((WT *)periodics, periodiccnt, 0);
1249 }
1250 else if (w->interval)
1251 {
953 ((WT)w)->at += floor ((rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval; 1252 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1253 if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
954 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > rt_now)); 1254 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
955 downheap ((WT *)periodics, periodiccnt, 0); 1255 downheap ((WT *)periodics, periodiccnt, 0);
956 } 1256 }
957 else 1257 else
958 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 1258 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
959 1259
960 event (EV_A_ (W)w, EV_PERIODIC); 1260 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
961 } 1261 }
962} 1262}
963 1263
964static void 1264static void noinline
965periodics_reschedule (EV_P) 1265periodics_reschedule (EV_P)
966{ 1266{
967 int i; 1267 int i;
968 1268
969 /* adjust periodics after time jump */ 1269 /* adjust periodics after time jump */
970 for (i = 0; i < periodiccnt; ++i) 1270 for (i = 0; i < periodiccnt; ++i)
971 { 1271 {
972 struct ev_periodic *w = periodics [i]; 1272 ev_periodic *w = periodics [i];
973 1273
1274 if (w->reschedule_cb)
1275 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
974 if (w->interval) 1276 else if (w->interval)
1277 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1278 }
1279
1280 /* now rebuild the heap */
1281 for (i = periodiccnt >> 1; i--; )
1282 downheap ((WT *)periodics, periodiccnt, i);
1283}
1284#endif
1285
1286#if EV_IDLE_ENABLE
1287void inline_size
1288idle_reify (EV_P)
1289{
1290 if (expect_false (idleall))
1291 {
1292 int pri;
1293
1294 for (pri = NUMPRI; pri--; )
975 { 1295 {
976 ev_tstamp diff = ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval; 1296 if (pendingcnt [pri])
1297 break;
977 1298
978 if (fabs (diff) >= 1e-4) 1299 if (idlecnt [pri])
979 { 1300 {
980 ev_periodic_stop (EV_A_ w); 1301 queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
981 ev_periodic_start (EV_A_ w); 1302 break;
982
983 i = 0; /* restart loop, inefficient, but time jumps should be rare */
984 } 1303 }
985 } 1304 }
986 } 1305 }
987} 1306}
1307#endif
988 1308
989inline int 1309int inline_size
990time_update_monotonic (EV_P) 1310time_update_monotonic (EV_P)
991{ 1311{
992 mn_now = get_clock (); 1312 mn_now = get_clock ();
993 1313
994 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 1314 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
995 { 1315 {
996 rt_now = rtmn_diff + mn_now; 1316 ev_rt_now = rtmn_diff + mn_now;
997 return 0; 1317 return 0;
998 } 1318 }
999 else 1319 else
1000 { 1320 {
1001 now_floor = mn_now; 1321 now_floor = mn_now;
1002 rt_now = ev_time (); 1322 ev_rt_now = ev_time ();
1003 return 1; 1323 return 1;
1004 } 1324 }
1005} 1325}
1006 1326
1007static void 1327void inline_size
1008time_update (EV_P) 1328time_update (EV_P)
1009{ 1329{
1010 int i; 1330 int i;
1011 1331
1012#if EV_USE_MONOTONIC 1332#if EV_USE_MONOTONIC
… …
1014 { 1334 {
1015 if (time_update_monotonic (EV_A)) 1335 if (time_update_monotonic (EV_A))
1016 { 1336 {
1017 ev_tstamp odiff = rtmn_diff; 1337 ev_tstamp odiff = rtmn_diff;
1018 1338
1019 for (i = 4; --i; ) /* loop a few times, before making important decisions */ 1339 /* loop a few times, before making important decisions.
1340 * on the choice of "4": one iteration isn't enough,
1341 * in case we get preempted during the calls to
1342 * ev_time and get_clock. a second call is almost guaranteed
1343 * to succeed in that case, though. and looping a few more times
1344 * doesn't hurt either as we only do this on time-jumps or
1345 * in the unlikely event of having been preempted here.
1346 */
1347 for (i = 4; --i; )
1020 { 1348 {
1021 rtmn_diff = rt_now - mn_now; 1349 rtmn_diff = ev_rt_now - mn_now;
1022 1350
1023 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) 1351 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1024 return; /* all is well */ 1352 return; /* all is well */
1025 1353
1026 rt_now = ev_time (); 1354 ev_rt_now = ev_time ();
1027 mn_now = get_clock (); 1355 mn_now = get_clock ();
1028 now_floor = mn_now; 1356 now_floor = mn_now;
1029 } 1357 }
1030 1358
1359# if EV_PERIODIC_ENABLE
1031 periodics_reschedule (EV_A); 1360 periodics_reschedule (EV_A);
1361# endif
1032 /* no timer adjustment, as the monotonic clock doesn't jump */ 1362 /* no timer adjustment, as the monotonic clock doesn't jump */
1033 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */ 1363 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1034 } 1364 }
1035 } 1365 }
1036 else 1366 else
1037#endif 1367#endif
1038 { 1368 {
1039 rt_now = ev_time (); 1369 ev_rt_now = ev_time ();
1040 1370
1041 if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP)) 1371 if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
1042 { 1372 {
1373#if EV_PERIODIC_ENABLE
1043 periodics_reschedule (EV_A); 1374 periodics_reschedule (EV_A);
1044 1375#endif
1045 /* adjust timers. this is easy, as the offset is the same for all */ 1376 /* adjust timers. this is easy, as the offset is the same for all of them */
1046 for (i = 0; i < timercnt; ++i) 1377 for (i = 0; i < timercnt; ++i)
1047 ((WT)timers [i])->at += rt_now - mn_now; 1378 ((WT)timers [i])->at += ev_rt_now - mn_now;
1048 } 1379 }
1049 1380
1050 mn_now = rt_now; 1381 mn_now = ev_rt_now;
1051 } 1382 }
1052} 1383}
1053 1384
1054void 1385void
1055ev_ref (EV_P) 1386ev_ref (EV_P)
… …
1066static int loop_done; 1397static int loop_done;
1067 1398
1068void 1399void
1069ev_loop (EV_P_ int flags) 1400ev_loop (EV_P_ int flags)
1070{ 1401{
1071 double block;
1072 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0; 1402 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
1403 ? EVUNLOOP_ONE
1404 : EVUNLOOP_CANCEL;
1405
1406 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
1073 1407
1074 do 1408 do
1075 { 1409 {
1410#ifndef _WIN32
1411 if (expect_false (curpid)) /* penalise the forking check even more */
1412 if (expect_false (getpid () != curpid))
1413 {
1414 curpid = getpid ();
1415 postfork = 1;
1416 }
1417#endif
1418
1419#if EV_FORK_ENABLE
1420 /* we might have forked, so queue fork handlers */
1421 if (expect_false (postfork))
1422 if (forkcnt)
1423 {
1424 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1425 call_pending (EV_A);
1426 }
1427#endif
1428
1076 /* queue check watchers (and execute them) */ 1429 /* queue prepare watchers (and execute them) */
1077 if (expect_false (preparecnt)) 1430 if (expect_false (preparecnt))
1078 { 1431 {
1079 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 1432 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1080 call_pending (EV_A); 1433 call_pending (EV_A);
1081 } 1434 }
1082 1435
1436 if (expect_false (!activecnt))
1437 break;
1438
1083 /* we might have forked, so reify kernel state if necessary */ 1439 /* we might have forked, so reify kernel state if necessary */
1084 if (expect_false (postfork)) 1440 if (expect_false (postfork))
1085 loop_fork (EV_A); 1441 loop_fork (EV_A);
1086 1442
1087 /* update fd-related kernel structures */ 1443 /* update fd-related kernel structures */
1088 fd_reify (EV_A); 1444 fd_reify (EV_A);
1089 1445
1090 /* calculate blocking time */ 1446 /* calculate blocking time */
1447 {
1448 ev_tstamp block;
1091 1449
1092 /* we only need this for !monotonic clockor timers, but as we basically 1450 if (expect_false (flags & EVLOOP_NONBLOCK || idleall || !activecnt))
1093 always have timers, we just calculate it always */ 1451 block = 0.; /* do not block at all */
1452 else
1453 {
1454 /* update time to cancel out callback processing overhead */
1094#if EV_USE_MONOTONIC 1455#if EV_USE_MONOTONIC
1095 if (expect_true (have_monotonic)) 1456 if (expect_true (have_monotonic))
1096 time_update_monotonic (EV_A); 1457 time_update_monotonic (EV_A);
1097 else 1458 else
1098#endif 1459#endif
1099 { 1460 {
1100 rt_now = ev_time (); 1461 ev_rt_now = ev_time ();
1101 mn_now = rt_now; 1462 mn_now = ev_rt_now;
1102 } 1463 }
1103 1464
1104 if (flags & EVLOOP_NONBLOCK || idlecnt)
1105 block = 0.;
1106 else
1107 {
1108 block = MAX_BLOCKTIME; 1465 block = MAX_BLOCKTIME;
1109 1466
1110 if (timercnt) 1467 if (timercnt)
1111 { 1468 {
1112 ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge; 1469 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1113 if (block > to) block = to; 1470 if (block > to) block = to;
1114 } 1471 }
1115 1472
1473#if EV_PERIODIC_ENABLE
1116 if (periodiccnt) 1474 if (periodiccnt)
1117 { 1475 {
1118 ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge; 1476 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1119 if (block > to) block = to; 1477 if (block > to) block = to;
1120 } 1478 }
1479#endif
1121 1480
1122 if (block < 0.) block = 0.; 1481 if (expect_false (block < 0.)) block = 0.;
1123 } 1482 }
1124 1483
1484 ++loop_count;
1125 method_poll (EV_A_ block); 1485 backend_poll (EV_A_ block);
1486 }
1126 1487
1127 /* update rt_now, do magic */ 1488 /* update ev_rt_now, do magic */
1128 time_update (EV_A); 1489 time_update (EV_A);
1129 1490
1130 /* queue pending timers and reschedule them */ 1491 /* queue pending timers and reschedule them */
1131 timers_reify (EV_A); /* relative timers called last */ 1492 timers_reify (EV_A); /* relative timers called last */
1493#if EV_PERIODIC_ENABLE
1132 periodics_reify (EV_A); /* absolute timers called first */ 1494 periodics_reify (EV_A); /* absolute timers called first */
1495#endif
1133 1496
1497#if EV_IDLE_ENABLE
1134 /* queue idle watchers unless io or timers are pending */ 1498 /* queue idle watchers unless other events are pending */
1135 if (!pendingcnt) 1499 idle_reify (EV_A);
1136 queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); 1500#endif
1137 1501
1138 /* queue check watchers, to be executed first */ 1502 /* queue check watchers, to be executed first */
1139 if (checkcnt) 1503 if (expect_false (checkcnt))
1140 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 1504 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1141 1505
1142 call_pending (EV_A); 1506 call_pending (EV_A);
1507
1143 } 1508 }
1144 while (activecnt && !loop_done); 1509 while (expect_true (activecnt && !loop_done));
1145 1510
1146 if (loop_done != 2) 1511 if (loop_done == EVUNLOOP_ONE)
1147 loop_done = 0; 1512 loop_done = EVUNLOOP_CANCEL;
1148} 1513}
1149 1514
1150void 1515void
1151ev_unloop (EV_P_ int how) 1516ev_unloop (EV_P_ int how)
1152{ 1517{
1153 loop_done = how; 1518 loop_done = how;
1154} 1519}
1155 1520
1156/*****************************************************************************/ 1521/*****************************************************************************/
1157 1522
1158inline void 1523void inline_size
1159wlist_add (WL *head, WL elem) 1524wlist_add (WL *head, WL elem)
1160{ 1525{
1161 elem->next = *head; 1526 elem->next = *head;
1162 *head = elem; 1527 *head = elem;
1163} 1528}
1164 1529
1165inline void 1530void inline_size
1166wlist_del (WL *head, WL elem) 1531wlist_del (WL *head, WL elem)
1167{ 1532{
1168 while (*head) 1533 while (*head)
1169 { 1534 {
1170 if (*head == elem) 1535 if (*head == elem)
… …
1175 1540
1176 head = &(*head)->next; 1541 head = &(*head)->next;
1177 } 1542 }
1178} 1543}
1179 1544
1180inline void 1545void inline_speed
1181ev_clear_pending (EV_P_ W w) 1546clear_pending (EV_P_ W w)
1182{ 1547{
1183 if (w->pending) 1548 if (w->pending)
1184 { 1549 {
1185 pendings [ABSPRI (w)][w->pending - 1].w = 0; 1550 pendings [ABSPRI (w)][w->pending - 1].w = 0;
1186 w->pending = 0; 1551 w->pending = 0;
1187 } 1552 }
1188} 1553}
1189 1554
1190inline void 1555int
1556ev_clear_pending (EV_P_ void *w)
1557{
1558 W w_ = (W)w;
1559 int pending = w_->pending;
1560
1561 if (expect_true (pending))
1562 {
1563 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
1564 w_->pending = 0;
1565 p->w = 0;
1566 return p->events;
1567 }
1568 else
1569 return 0;
1570}
1571
1572void inline_size
1573pri_adjust (EV_P_ W w)
1574{
1575 int pri = w->priority;
1576 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1577 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1578 w->priority = pri;
1579}
1580
1581void inline_speed
1191ev_start (EV_P_ W w, int active) 1582ev_start (EV_P_ W w, int active)
1192{ 1583{
1193 if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; 1584 pri_adjust (EV_A_ w);
1194 if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1195
1196 w->active = active; 1585 w->active = active;
1197 ev_ref (EV_A); 1586 ev_ref (EV_A);
1198} 1587}
1199 1588
1200inline void 1589void inline_size
1201ev_stop (EV_P_ W w) 1590ev_stop (EV_P_ W w)
1202{ 1591{
1203 ev_unref (EV_A); 1592 ev_unref (EV_A);
1204 w->active = 0; 1593 w->active = 0;
1205} 1594}
1206 1595
1207/*****************************************************************************/ 1596/*****************************************************************************/
1208 1597
1209void 1598void noinline
1210ev_io_start (EV_P_ struct ev_io *w) 1599ev_io_start (EV_P_ ev_io *w)
1211{ 1600{
1212 int fd = w->fd; 1601 int fd = w->fd;
1213 1602
1214 if (ev_is_active (w)) 1603 if (expect_false (ev_is_active (w)))
1215 return; 1604 return;
1216 1605
1217 assert (("ev_io_start called with negative fd", fd >= 0)); 1606 assert (("ev_io_start called with negative fd", fd >= 0));
1218 1607
1219 ev_start (EV_A_ (W)w, 1); 1608 ev_start (EV_A_ (W)w, 1);
1220 array_needsize (anfds, anfdmax, fd + 1, anfds_init); 1609 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1221 wlist_add ((WL *)&anfds[fd].head, (WL)w); 1610 wlist_add ((WL *)&anfds[fd].head, (WL)w);
1222 1611
1223 fd_change (EV_A_ fd); 1612 fd_change (EV_A_ fd);
1224} 1613}
1225 1614
1226void 1615void noinline
1227ev_io_stop (EV_P_ struct ev_io *w) 1616ev_io_stop (EV_P_ ev_io *w)
1228{ 1617{
1229 ev_clear_pending (EV_A_ (W)w); 1618 clear_pending (EV_A_ (W)w);
1230 if (!ev_is_active (w)) 1619 if (expect_false (!ev_is_active (w)))
1231 return; 1620 return;
1621
1622 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1232 1623
1233 wlist_del ((WL *)&anfds[w->fd].head, (WL)w); 1624 wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
1234 ev_stop (EV_A_ (W)w); 1625 ev_stop (EV_A_ (W)w);
1235 1626
1236 fd_change (EV_A_ w->fd); 1627 fd_change (EV_A_ w->fd);
1237} 1628}
1238 1629
1239void 1630void noinline
1240ev_timer_start (EV_P_ struct ev_timer *w) 1631ev_timer_start (EV_P_ ev_timer *w)
1241{ 1632{
1242 if (ev_is_active (w)) 1633 if (expect_false (ev_is_active (w)))
1243 return; 1634 return;
1244 1635
1245 ((WT)w)->at += mn_now; 1636 ((WT)w)->at += mn_now;
1246 1637
1247 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 1638 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1248 1639
1249 ev_start (EV_A_ (W)w, ++timercnt); 1640 ev_start (EV_A_ (W)w, ++timercnt);
1250 array_needsize (timers, timermax, timercnt, (void)); 1641 array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);
1251 timers [timercnt - 1] = w; 1642 timers [timercnt - 1] = w;
1252 upheap ((WT *)timers, timercnt - 1); 1643 upheap ((WT *)timers, timercnt - 1);
1253 1644
1645 /*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
1646}
1647
1648void noinline
1649ev_timer_stop (EV_P_ ev_timer *w)
1650{
1651 clear_pending (EV_A_ (W)w);
1652 if (expect_false (!ev_is_active (w)))
1653 return;
1654
1254 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 1655 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1255}
1256 1656
1257void 1657 {
1258ev_timer_stop (EV_P_ struct ev_timer *w) 1658 int active = ((W)w)->active;
1259{
1260 ev_clear_pending (EV_A_ (W)w);
1261 if (!ev_is_active (w))
1262 return;
1263 1659
1264 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 1660 if (expect_true (--active < --timercnt))
1265
1266 if (((W)w)->active < timercnt--)
1267 { 1661 {
1268 timers [((W)w)->active - 1] = timers [timercnt]; 1662 timers [active] = timers [timercnt];
1269 downheap ((WT *)timers, timercnt, ((W)w)->active - 1); 1663 adjustheap ((WT *)timers, timercnt, active);
1270 } 1664 }
1665 }
1271 1666
1272 ((WT)w)->at = w->repeat; 1667 ((WT)w)->at -= mn_now;
1273 1668
1274 ev_stop (EV_A_ (W)w); 1669 ev_stop (EV_A_ (W)w);
1275} 1670}
1276 1671
1277void 1672void noinline
1278ev_timer_again (EV_P_ struct ev_timer *w) 1673ev_timer_again (EV_P_ ev_timer *w)
1279{ 1674{
1280 if (ev_is_active (w)) 1675 if (ev_is_active (w))
1281 { 1676 {
1282 if (w->repeat) 1677 if (w->repeat)
1283 { 1678 {
1284 ((WT)w)->at = mn_now + w->repeat; 1679 ((WT)w)->at = mn_now + w->repeat;
1285 downheap ((WT *)timers, timercnt, ((W)w)->active - 1); 1680 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1286 } 1681 }
1287 else 1682 else
1288 ev_timer_stop (EV_A_ w); 1683 ev_timer_stop (EV_A_ w);
1289 } 1684 }
1290 else if (w->repeat) 1685 else if (w->repeat)
1686 {
1687 w->at = w->repeat;
1291 ev_timer_start (EV_A_ w); 1688 ev_timer_start (EV_A_ w);
1689 }
1292} 1690}
1293 1691
1294void 1692#if EV_PERIODIC_ENABLE
1693void noinline
1295ev_periodic_start (EV_P_ struct ev_periodic *w) 1694ev_periodic_start (EV_P_ ev_periodic *w)
1296{ 1695{
1297 if (ev_is_active (w)) 1696 if (expect_false (ev_is_active (w)))
1298 return; 1697 return;
1299 1698
1699 if (w->reschedule_cb)
1700 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1701 else if (w->interval)
1702 {
1300 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 1703 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1301
1302 /* this formula differs from the one in periodic_reify because we do not always round up */ 1704 /* this formula differs from the one in periodic_reify because we do not always round up */
1303 if (w->interval)
1304 ((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval; 1705 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1706 }
1707 else
1708 ((WT)w)->at = w->offset;
1305 1709
1306 ev_start (EV_A_ (W)w, ++periodiccnt); 1710 ev_start (EV_A_ (W)w, ++periodiccnt);
1307 array_needsize (periodics, periodicmax, periodiccnt, (void)); 1711 array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1308 periodics [periodiccnt - 1] = w; 1712 periodics [periodiccnt - 1] = w;
1309 upheap ((WT *)periodics, periodiccnt - 1); 1713 upheap ((WT *)periodics, periodiccnt - 1);
1310 1714
1715 /*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
1716}
1717
1718void noinline
1719ev_periodic_stop (EV_P_ ev_periodic *w)
1720{
1721 clear_pending (EV_A_ (W)w);
1722 if (expect_false (!ev_is_active (w)))
1723 return;
1724
1311 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1725 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1312}
1313 1726
1314void 1727 {
1315ev_periodic_stop (EV_P_ struct ev_periodic *w) 1728 int active = ((W)w)->active;
1316{
1317 ev_clear_pending (EV_A_ (W)w);
1318 if (!ev_is_active (w))
1319 return;
1320 1729
1321 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1730 if (expect_true (--active < --periodiccnt))
1322
1323 if (((W)w)->active < periodiccnt--)
1324 { 1731 {
1325 periodics [((W)w)->active - 1] = periodics [periodiccnt]; 1732 periodics [active] = periodics [periodiccnt];
1326 downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1); 1733 adjustheap ((WT *)periodics, periodiccnt, active);
1327 } 1734 }
1735 }
1328 1736
1329 ev_stop (EV_A_ (W)w); 1737 ev_stop (EV_A_ (W)w);
1330} 1738}
1331 1739
1332void 1740void noinline
1333ev_idle_start (EV_P_ struct ev_idle *w) 1741ev_periodic_again (EV_P_ ev_periodic *w)
1334{ 1742{
1335 if (ev_is_active (w)) 1743 /* 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); 1744 ev_periodic_stop (EV_A_ w);
1745 ev_periodic_start (EV_A_ w);
1352} 1746}
1353 1747#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 1748
1398#ifndef SA_RESTART 1749#ifndef SA_RESTART
1399# define SA_RESTART 0 1750# define SA_RESTART 0
1400#endif 1751#endif
1401 1752
1402void 1753void noinline
1403ev_signal_start (EV_P_ struct ev_signal *w) 1754ev_signal_start (EV_P_ ev_signal *w)
1404{ 1755{
1405#if EV_MULTIPLICITY 1756#if EV_MULTIPLICITY
1406 assert (("signal watchers are only supported in the default loop", loop == default_loop)); 1757 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1407#endif 1758#endif
1408 if (ev_is_active (w)) 1759 if (expect_false (ev_is_active (w)))
1409 return; 1760 return;
1410 1761
1411 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 1762 assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1412 1763
1413 ev_start (EV_A_ (W)w, 1); 1764 ev_start (EV_A_ (W)w, 1);
1414 array_needsize (signals, signalmax, w->signum, signals_init); 1765 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1415 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); 1766 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1416 1767
1417 if (!((WL)w)->next) 1768 if (!((WL)w)->next)
1418 { 1769 {
1419#if WIN32 1770#if _WIN32
1420 signal (w->signum, sighandler); 1771 signal (w->signum, sighandler);
1421#else 1772#else
1422 struct sigaction sa; 1773 struct sigaction sa;
1423 sa.sa_handler = sighandler; 1774 sa.sa_handler = sighandler;
1424 sigfillset (&sa.sa_mask); 1775 sigfillset (&sa.sa_mask);
… …
1426 sigaction (w->signum, &sa, 0); 1777 sigaction (w->signum, &sa, 0);
1427#endif 1778#endif
1428 } 1779 }
1429} 1780}
1430 1781
1431void 1782void noinline
1432ev_signal_stop (EV_P_ struct ev_signal *w) 1783ev_signal_stop (EV_P_ ev_signal *w)
1433{ 1784{
1434 ev_clear_pending (EV_A_ (W)w); 1785 clear_pending (EV_A_ (W)w);
1435 if (!ev_is_active (w)) 1786 if (expect_false (!ev_is_active (w)))
1436 return; 1787 return;
1437 1788
1438 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); 1789 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1439 ev_stop (EV_A_ (W)w); 1790 ev_stop (EV_A_ (W)w);
1440 1791
1441 if (!signals [w->signum - 1].head) 1792 if (!signals [w->signum - 1].head)
1442 signal (w->signum, SIG_DFL); 1793 signal (w->signum, SIG_DFL);
1443} 1794}
1444 1795
1445void 1796void
1446ev_child_start (EV_P_ struct ev_child *w) 1797ev_child_start (EV_P_ ev_child *w)
1447{ 1798{
1448#if EV_MULTIPLICITY 1799#if EV_MULTIPLICITY
1449 assert (("child watchers are only supported in the default loop", loop == default_loop)); 1800 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1450#endif 1801#endif
1451 if (ev_is_active (w)) 1802 if (expect_false (ev_is_active (w)))
1452 return; 1803 return;
1453 1804
1454 ev_start (EV_A_ (W)w, 1); 1805 ev_start (EV_A_ (W)w, 1);
1455 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1806 wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1456} 1807}
1457 1808
1458void 1809void
1459ev_child_stop (EV_P_ struct ev_child *w) 1810ev_child_stop (EV_P_ ev_child *w)
1460{ 1811{
1461 ev_clear_pending (EV_A_ (W)w); 1812 clear_pending (EV_A_ (W)w);
1462 if (ev_is_active (w)) 1813 if (expect_false (!ev_is_active (w)))
1463 return; 1814 return;
1464 1815
1465 wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1816 wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1466 ev_stop (EV_A_ (W)w); 1817 ev_stop (EV_A_ (W)w);
1467} 1818}
1468 1819
1820#if EV_STAT_ENABLE
1821
1822# ifdef _WIN32
1823# undef lstat
1824# define lstat(a,b) _stati64 (a,b)
1825# endif
1826
1827#define DEF_STAT_INTERVAL 5.0074891
1828#define MIN_STAT_INTERVAL 0.1074891
1829
1830static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
1831
1832#if EV_USE_INOTIFY
1833# define EV_INOTIFY_BUFSIZE 8192
1834
1835static void noinline
1836infy_add (EV_P_ ev_stat *w)
1837{
1838 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD);
1839
1840 if (w->wd < 0)
1841 {
1842 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
1843
1844 /* monitor some parent directory for speedup hints */
1845 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
1846 {
1847 char path [4096];
1848 strcpy (path, w->path);
1849
1850 do
1851 {
1852 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
1853 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
1854
1855 char *pend = strrchr (path, '/');
1856
1857 if (!pend)
1858 break; /* whoops, no '/', complain to your admin */
1859
1860 *pend = 0;
1861 w->wd = inotify_add_watch (fs_fd, path, mask);
1862 }
1863 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
1864 }
1865 }
1866 else
1867 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
1868
1869 if (w->wd >= 0)
1870 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
1871}
1872
1873static void noinline
1874infy_del (EV_P_ ev_stat *w)
1875{
1876 int slot;
1877 int wd = w->wd;
1878
1879 if (wd < 0)
1880 return;
1881
1882 w->wd = -2;
1883 slot = wd & (EV_INOTIFY_HASHSIZE - 1);
1884 wlist_del (&fs_hash [slot].head, (WL)w);
1885
1886 /* remove this watcher, if others are watching it, they will rearm */
1887 inotify_rm_watch (fs_fd, wd);
1888}
1889
1890static void noinline
1891infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
1892{
1893 if (slot < 0)
1894 /* overflow, need to check for all hahs slots */
1895 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
1896 infy_wd (EV_A_ slot, wd, ev);
1897 else
1898 {
1899 WL w_;
1900
1901 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
1902 {
1903 ev_stat *w = (ev_stat *)w_;
1904 w_ = w_->next; /* lets us remove this watcher and all before it */
1905
1906 if (w->wd == wd || wd == -1)
1907 {
1908 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
1909 {
1910 w->wd = -1;
1911 infy_add (EV_A_ w); /* re-add, no matter what */
1912 }
1913
1914 stat_timer_cb (EV_A_ &w->timer, 0);
1915 }
1916 }
1917 }
1918}
1919
1920static void
1921infy_cb (EV_P_ ev_io *w, int revents)
1922{
1923 char buf [EV_INOTIFY_BUFSIZE];
1924 struct inotify_event *ev = (struct inotify_event *)buf;
1925 int ofs;
1926 int len = read (fs_fd, buf, sizeof (buf));
1927
1928 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
1929 infy_wd (EV_A_ ev->wd, ev->wd, ev);
1930}
1931
1932void inline_size
1933infy_init (EV_P)
1934{
1935 if (fs_fd != -2)
1936 return;
1937
1938 fs_fd = inotify_init ();
1939
1940 if (fs_fd >= 0)
1941 {
1942 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
1943 ev_set_priority (&fs_w, EV_MAXPRI);
1944 ev_io_start (EV_A_ &fs_w);
1945 }
1946}
1947
1948void inline_size
1949infy_fork (EV_P)
1950{
1951 int slot;
1952
1953 if (fs_fd < 0)
1954 return;
1955
1956 close (fs_fd);
1957 fs_fd = inotify_init ();
1958
1959 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
1960 {
1961 WL w_ = fs_hash [slot].head;
1962 fs_hash [slot].head = 0;
1963
1964 while (w_)
1965 {
1966 ev_stat *w = (ev_stat *)w_;
1967 w_ = w_->next; /* lets us add this watcher */
1968
1969 w->wd = -1;
1970
1971 if (fs_fd >= 0)
1972 infy_add (EV_A_ w); /* re-add, no matter what */
1973 else
1974 ev_timer_start (EV_A_ &w->timer);
1975 }
1976
1977 }
1978}
1979
1980#endif
1981
1982void
1983ev_stat_stat (EV_P_ ev_stat *w)
1984{
1985 if (lstat (w->path, &w->attr) < 0)
1986 w->attr.st_nlink = 0;
1987 else if (!w->attr.st_nlink)
1988 w->attr.st_nlink = 1;
1989}
1990
1991static void noinline
1992stat_timer_cb (EV_P_ ev_timer *w_, int revents)
1993{
1994 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
1995
1996 /* we copy this here each the time so that */
1997 /* prev has the old value when the callback gets invoked */
1998 w->prev = w->attr;
1999 ev_stat_stat (EV_A_ w);
2000
2001 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2002 if (
2003 w->prev.st_dev != w->attr.st_dev
2004 || w->prev.st_ino != w->attr.st_ino
2005 || w->prev.st_mode != w->attr.st_mode
2006 || w->prev.st_nlink != w->attr.st_nlink
2007 || w->prev.st_uid != w->attr.st_uid
2008 || w->prev.st_gid != w->attr.st_gid
2009 || w->prev.st_rdev != w->attr.st_rdev
2010 || w->prev.st_size != w->attr.st_size
2011 || w->prev.st_atime != w->attr.st_atime
2012 || w->prev.st_mtime != w->attr.st_mtime
2013 || w->prev.st_ctime != w->attr.st_ctime
2014 ) {
2015 #if EV_USE_INOTIFY
2016 infy_del (EV_A_ w);
2017 infy_add (EV_A_ w);
2018 ev_stat_stat (EV_A_ w); /* avoid race... */
2019 #endif
2020
2021 ev_feed_event (EV_A_ w, EV_STAT);
2022 }
2023}
2024
2025void
2026ev_stat_start (EV_P_ ev_stat *w)
2027{
2028 if (expect_false (ev_is_active (w)))
2029 return;
2030
2031 /* since we use memcmp, we need to clear any padding data etc. */
2032 memset (&w->prev, 0, sizeof (ev_statdata));
2033 memset (&w->attr, 0, sizeof (ev_statdata));
2034
2035 ev_stat_stat (EV_A_ w);
2036
2037 if (w->interval < MIN_STAT_INTERVAL)
2038 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2039
2040 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
2041 ev_set_priority (&w->timer, ev_priority (w));
2042
2043#if EV_USE_INOTIFY
2044 infy_init (EV_A);
2045
2046 if (fs_fd >= 0)
2047 infy_add (EV_A_ w);
2048 else
2049#endif
2050 ev_timer_start (EV_A_ &w->timer);
2051
2052 ev_start (EV_A_ (W)w, 1);
2053}
2054
2055void
2056ev_stat_stop (EV_P_ ev_stat *w)
2057{
2058 clear_pending (EV_A_ (W)w);
2059 if (expect_false (!ev_is_active (w)))
2060 return;
2061
2062#if EV_USE_INOTIFY
2063 infy_del (EV_A_ w);
2064#endif
2065 ev_timer_stop (EV_A_ &w->timer);
2066
2067 ev_stop (EV_A_ (W)w);
2068}
2069#endif
2070
2071#if EV_IDLE_ENABLE
2072void
2073ev_idle_start (EV_P_ ev_idle *w)
2074{
2075 if (expect_false (ev_is_active (w)))
2076 return;
2077
2078 pri_adjust (EV_A_ (W)w);
2079
2080 {
2081 int active = ++idlecnt [ABSPRI (w)];
2082
2083 ++idleall;
2084 ev_start (EV_A_ (W)w, active);
2085
2086 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2087 idles [ABSPRI (w)][active - 1] = w;
2088 }
2089}
2090
2091void
2092ev_idle_stop (EV_P_ ev_idle *w)
2093{
2094 clear_pending (EV_A_ (W)w);
2095 if (expect_false (!ev_is_active (w)))
2096 return;
2097
2098 {
2099 int active = ((W)w)->active;
2100
2101 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2102 ((W)idles [ABSPRI (w)][active - 1])->active = active;
2103
2104 ev_stop (EV_A_ (W)w);
2105 --idleall;
2106 }
2107}
2108#endif
2109
2110void
2111ev_prepare_start (EV_P_ ev_prepare *w)
2112{
2113 if (expect_false (ev_is_active (w)))
2114 return;
2115
2116 ev_start (EV_A_ (W)w, ++preparecnt);
2117 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2118 prepares [preparecnt - 1] = w;
2119}
2120
2121void
2122ev_prepare_stop (EV_P_ ev_prepare *w)
2123{
2124 clear_pending (EV_A_ (W)w);
2125 if (expect_false (!ev_is_active (w)))
2126 return;
2127
2128 {
2129 int active = ((W)w)->active;
2130 prepares [active - 1] = prepares [--preparecnt];
2131 ((W)prepares [active - 1])->active = active;
2132 }
2133
2134 ev_stop (EV_A_ (W)w);
2135}
2136
2137void
2138ev_check_start (EV_P_ ev_check *w)
2139{
2140 if (expect_false (ev_is_active (w)))
2141 return;
2142
2143 ev_start (EV_A_ (W)w, ++checkcnt);
2144 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2145 checks [checkcnt - 1] = w;
2146}
2147
2148void
2149ev_check_stop (EV_P_ ev_check *w)
2150{
2151 clear_pending (EV_A_ (W)w);
2152 if (expect_false (!ev_is_active (w)))
2153 return;
2154
2155 {
2156 int active = ((W)w)->active;
2157 checks [active - 1] = checks [--checkcnt];
2158 ((W)checks [active - 1])->active = active;
2159 }
2160
2161 ev_stop (EV_A_ (W)w);
2162}
2163
2164#if EV_EMBED_ENABLE
2165void noinline
2166ev_embed_sweep (EV_P_ ev_embed *w)
2167{
2168 ev_loop (w->loop, EVLOOP_NONBLOCK);
2169}
2170
2171static void
2172embed_cb (EV_P_ ev_io *io, int revents)
2173{
2174 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2175
2176 if (ev_cb (w))
2177 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2178 else
2179 ev_embed_sweep (loop, w);
2180}
2181
2182void
2183ev_embed_start (EV_P_ ev_embed *w)
2184{
2185 if (expect_false (ev_is_active (w)))
2186 return;
2187
2188 {
2189 struct ev_loop *loop = w->loop;
2190 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2191 ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
2192 }
2193
2194 ev_set_priority (&w->io, ev_priority (w));
2195 ev_io_start (EV_A_ &w->io);
2196
2197 ev_start (EV_A_ (W)w, 1);
2198}
2199
2200void
2201ev_embed_stop (EV_P_ ev_embed *w)
2202{
2203 clear_pending (EV_A_ (W)w);
2204 if (expect_false (!ev_is_active (w)))
2205 return;
2206
2207 ev_io_stop (EV_A_ &w->io);
2208
2209 ev_stop (EV_A_ (W)w);
2210}
2211#endif
2212
2213#if EV_FORK_ENABLE
2214void
2215ev_fork_start (EV_P_ ev_fork *w)
2216{
2217 if (expect_false (ev_is_active (w)))
2218 return;
2219
2220 ev_start (EV_A_ (W)w, ++forkcnt);
2221 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2222 forks [forkcnt - 1] = w;
2223}
2224
2225void
2226ev_fork_stop (EV_P_ ev_fork *w)
2227{
2228 clear_pending (EV_A_ (W)w);
2229 if (expect_false (!ev_is_active (w)))
2230 return;
2231
2232 {
2233 int active = ((W)w)->active;
2234 forks [active - 1] = forks [--forkcnt];
2235 ((W)forks [active - 1])->active = active;
2236 }
2237
2238 ev_stop (EV_A_ (W)w);
2239}
2240#endif
2241
1469/*****************************************************************************/ 2242/*****************************************************************************/
1470 2243
1471struct ev_once 2244struct ev_once
1472{ 2245{
1473 struct ev_io io; 2246 ev_io io;
1474 struct ev_timer to; 2247 ev_timer to;
1475 void (*cb)(int revents, void *arg); 2248 void (*cb)(int revents, void *arg);
1476 void *arg; 2249 void *arg;
1477}; 2250};
1478 2251
1479static void 2252static void
… …
1488 2261
1489 cb (revents, arg); 2262 cb (revents, arg);
1490} 2263}
1491 2264
1492static void 2265static void
1493once_cb_io (EV_P_ struct ev_io *w, int revents) 2266once_cb_io (EV_P_ ev_io *w, int revents)
1494{ 2267{
1495 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 2268 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1496} 2269}
1497 2270
1498static void 2271static void
1499once_cb_to (EV_P_ struct ev_timer *w, int revents) 2272once_cb_to (EV_P_ ev_timer *w, int revents)
1500{ 2273{
1501 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 2274 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1502} 2275}
1503 2276
1504void 2277void
1505ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 2278ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1506{ 2279{
1507 struct ev_once *once = ev_malloc (sizeof (struct ev_once)); 2280 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1508 2281
1509 if (!once) 2282 if (expect_false (!once))
2283 {
1510 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 2284 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1511 else 2285 return;
1512 { 2286 }
2287
1513 once->cb = cb; 2288 once->cb = cb;
1514 once->arg = arg; 2289 once->arg = arg;
1515 2290
1516 ev_watcher_init (&once->io, once_cb_io); 2291 ev_init (&once->io, once_cb_io);
1517 if (fd >= 0) 2292 if (fd >= 0)
1518 { 2293 {
1519 ev_io_set (&once->io, fd, events); 2294 ev_io_set (&once->io, fd, events);
1520 ev_io_start (EV_A_ &once->io); 2295 ev_io_start (EV_A_ &once->io);
1521 } 2296 }
1522 2297
1523 ev_watcher_init (&once->to, once_cb_to); 2298 ev_init (&once->to, once_cb_to);
1524 if (timeout >= 0.) 2299 if (timeout >= 0.)
1525 { 2300 {
1526 ev_timer_set (&once->to, timeout, 0.); 2301 ev_timer_set (&once->to, timeout, 0.);
1527 ev_timer_start (EV_A_ &once->to); 2302 ev_timer_start (EV_A_ &once->to);
1528 }
1529 } 2303 }
1530} 2304}
1531 2305
2306#ifdef __cplusplus
2307}
2308#endif
2309

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