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Comparing libev/ev.c (file contents):
Revision 1.68 by root, Mon Nov 5 20:19:00 2007 UTC vs.
Revision 1.178 by root, Tue Dec 11 18:36:11 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>
58#include <stdlib.h> 110#include <stdlib.h>
59#include <unistd.h>
60#include <fcntl.h> 111#include <fcntl.h>
61#include <signal.h>
62#include <stddef.h> 112#include <stddef.h>
63 113
64#include <stdio.h> 114#include <stdio.h>
65 115
66#include <assert.h> 116#include <assert.h>
67#include <errno.h> 117#include <errno.h>
68#include <sys/types.h> 118#include <sys/types.h>
119#include <time.h>
120
121#include <signal.h>
122
123#ifdef EV_H
124# include EV_H
125#else
126# include "ev.h"
127#endif
128
69#ifndef WIN32 129#ifndef _WIN32
130# include <sys/time.h>
70# 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
71#endif 138# endif
72#include <sys/time.h> 139#endif
73#include <time.h>
74 140
75/**/ 141/**/
76 142
77#ifndef EV_USE_MONOTONIC 143#ifndef EV_USE_MONOTONIC
78# 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
79#endif 149#endif
80 150
81#ifndef EV_USE_SELECT 151#ifndef EV_USE_SELECT
82# define EV_USE_SELECT 1 152# define EV_USE_SELECT 1
83#endif 153#endif
84 154
85#ifndef EV_USE_POLL 155#ifndef EV_USE_POLL
86# 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
87#endif 161#endif
88 162
89#ifndef EV_USE_EPOLL 163#ifndef EV_USE_EPOLL
90# define EV_USE_EPOLL 0 164# define EV_USE_EPOLL 0
91#endif 165#endif
92 166
93#ifndef EV_USE_KQUEUE 167#ifndef EV_USE_KQUEUE
94# define EV_USE_KQUEUE 0 168# define EV_USE_KQUEUE 0
95#endif 169#endif
96 170
171#ifndef EV_USE_PORT
172# define EV_USE_PORT 0
173#endif
174
97#ifndef EV_USE_WIN32 175#ifndef EV_USE_INOTIFY
98# ifdef WIN32 176# define EV_USE_INOTIFY 0
99# define EV_USE_WIN32 1 177#endif
178
179#ifndef EV_PID_HASHSIZE
180# if EV_MINIMAL
181# define EV_PID_HASHSIZE 1
100# else 182# else
101# define EV_USE_WIN32 0 183# define EV_PID_HASHSIZE 16
102# endif 184# endif
103#endif 185#endif
104 186
105#ifndef EV_USE_REALTIME 187#ifndef EV_INOTIFY_HASHSIZE
106# 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
107#endif 193#endif
108 194
109/**/ 195/**/
110 196
111#ifndef CLOCK_MONOTONIC 197#ifndef CLOCK_MONOTONIC
… …
116#ifndef CLOCK_REALTIME 202#ifndef CLOCK_REALTIME
117# undef EV_USE_REALTIME 203# undef EV_USE_REALTIME
118# define EV_USE_REALTIME 0 204# define EV_USE_REALTIME 0
119#endif 205#endif
120 206
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
121/**/ 219/**/
122 220
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
123#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) */
124#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) */
125#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
126/*#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 */
127
128#include "ev.h"
129 234
130#if __GNUC__ >= 3 235#if __GNUC__ >= 3
131# define expect(expr,value) __builtin_expect ((expr),(value)) 236# define expect(expr,value) __builtin_expect ((expr),(value))
132# define inline inline 237# define noinline __attribute__ ((noinline))
133#else 238#else
134# define expect(expr,value) (expr) 239# define expect(expr,value) (expr)
135# define inline static 240# define noinline
241# if __STDC_VERSION__ < 199901L
242# define inline
243# endif
136#endif 244#endif
137 245
138#define expect_false(expr) expect ((expr) != 0, 0) 246#define expect_false(expr) expect ((expr) != 0, 0)
139#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
140 255
141#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 256#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
142#define ABSPRI(w) ((w)->priority - EV_MINPRI) 257#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
143 258
259#define EMPTY /* required for microsofts broken pseudo-c compiler */
260#define EMPTY2(a,b) /* used to suppress some warnings */
261
144typedef struct ev_watcher *W; 262typedef ev_watcher *W;
145typedef struct ev_watcher_list *WL; 263typedef ev_watcher_list *WL;
146typedef struct ev_watcher_time *WT; 264typedef ev_watcher_time *WT;
147 265
148static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 266static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
149 267
150#if WIN32 268#ifdef _WIN32
151/* note: the comment below could not be substantiated, but what would I care */ 269# include "ev_win32.c"
152/* MSDN says this is required to handle SIGFPE */
153volatile double SIGFPE_REQ = 0.0f;
154#endif 270#endif
271
272/*****************************************************************************/
273
274static void (*syserr_cb)(const char *msg);
275
276void
277ev_set_syserr_cb (void (*cb)(const char *msg))
278{
279 syserr_cb = cb;
280}
281
282static void noinline
283syserr (const char *msg)
284{
285 if (!msg)
286 msg = "(libev) system error";
287
288 if (syserr_cb)
289 syserr_cb (msg);
290 else
291 {
292 perror (msg);
293 abort ();
294 }
295}
296
297static void *(*alloc)(void *ptr, long size);
298
299void
300ev_set_allocator (void *(*cb)(void *ptr, long size))
301{
302 alloc = cb;
303}
304
305inline_speed void *
306ev_realloc (void *ptr, long size)
307{
308 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
309
310 if (!ptr && size)
311 {
312 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
313 abort ();
314 }
315
316 return ptr;
317}
318
319#define ev_malloc(size) ev_realloc (0, (size))
320#define ev_free(ptr) ev_realloc ((ptr), 0)
155 321
156/*****************************************************************************/ 322/*****************************************************************************/
157 323
158typedef struct 324typedef struct
159{ 325{
160 WL head; 326 WL head;
161 unsigned char events; 327 unsigned char events;
162 unsigned char reify; 328 unsigned char reify;
329#if EV_SELECT_IS_WINSOCKET
330 SOCKET handle;
331#endif
163} ANFD; 332} ANFD;
164 333
165typedef struct 334typedef struct
166{ 335{
167 W w; 336 W w;
168 int events; 337 int events;
169} ANPENDING; 338} ANPENDING;
170 339
340#if EV_USE_INOTIFY
341typedef struct
342{
343 WL head;
344} ANFS;
345#endif
346
171#if EV_MULTIPLICITY 347#if EV_MULTIPLICITY
172 348
173struct ev_loop 349 struct ev_loop
174{ 350 {
351 ev_tstamp ev_rt_now;
352 #define ev_rt_now ((loop)->ev_rt_now)
175# define VAR(name,decl) decl; 353 #define VAR(name,decl) decl;
176# include "ev_vars.h" 354 #include "ev_vars.h"
177};
178# undef VAR 355 #undef VAR
356 };
179# 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;
180 361
181#else 362#else
182 363
364 ev_tstamp ev_rt_now;
183# define VAR(name,decl) static decl; 365 #define VAR(name,decl) static decl;
184# include "ev_vars.h" 366 #include "ev_vars.h"
185# undef VAR 367 #undef VAR
368
369 static int ev_default_loop_ptr;
186 370
187#endif 371#endif
188 372
189/*****************************************************************************/ 373/*****************************************************************************/
190 374
191inline ev_tstamp 375ev_tstamp
192ev_time (void) 376ev_time (void)
193{ 377{
194#if EV_USE_REALTIME 378#if EV_USE_REALTIME
195 struct timespec ts; 379 struct timespec ts;
196 clock_gettime (CLOCK_REALTIME, &ts); 380 clock_gettime (CLOCK_REALTIME, &ts);
… …
200 gettimeofday (&tv, 0); 384 gettimeofday (&tv, 0);
201 return tv.tv_sec + tv.tv_usec * 1e-6; 385 return tv.tv_sec + tv.tv_usec * 1e-6;
202#endif 386#endif
203} 387}
204 388
205inline ev_tstamp 389ev_tstamp inline_size
206get_clock (void) 390get_clock (void)
207{ 391{
208#if EV_USE_MONOTONIC 392#if EV_USE_MONOTONIC
209 if (expect_true (have_monotonic)) 393 if (expect_true (have_monotonic))
210 { 394 {
… …
215#endif 399#endif
216 400
217 return ev_time (); 401 return ev_time ();
218} 402}
219 403
404#if EV_MULTIPLICITY
220ev_tstamp 405ev_tstamp
221ev_now (EV_P) 406ev_now (EV_P)
222{ 407{
223 return rt_now; 408 return ev_rt_now;
224} 409}
410#endif
225 411
226#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;
227 416
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
228#define array_needsize(base,cur,cnt,init) \ 440#define array_needsize(type,base,cur,cnt,init) \
229 if (expect_false ((cnt) > cur)) \ 441 if (expect_false ((cnt) > (cur))) \
230 { \ 442 { \
231 int newcnt = cur; \ 443 int ocur_ = (cur); \
232 do \ 444 (base) = (type *)array_realloc \
233 { \ 445 (sizeof (type), (base), &(cur), (cnt)); \
234 newcnt = array_roundsize (base, newcnt << 1); \ 446 init ((base) + (ocur_), (cur) - ocur_); \
235 } \
236 while ((cnt) > newcnt); \
237 \
238 base = realloc (base, sizeof (*base) * (newcnt)); \
239 init (base + cur, newcnt - cur); \
240 cur = newcnt; \
241 } 447 }
242 448
449#if 0
243#define array_slim(stem) \ 450#define array_slim(type,stem) \
244 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 451 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
245 { \ 452 { \
246 stem ## max = array_roundsize (stem ## cnt >> 1); \ 453 stem ## max = array_roundsize (stem ## cnt >> 1); \
247 base = realloc (base, sizeof (*base) * (stem ## max)); \ 454 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
248 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 455 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
249 } 456 }
457#endif
250 458
251#define array_free(stem, idx) \ 459#define array_free(stem, idx) \
252 free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 460 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
253 461
254/*****************************************************************************/ 462/*****************************************************************************/
255 463
256static 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
257anfds_init (ANFD *base, int count) 493anfds_init (ANFD *base, int count)
258{ 494{
259 while (count--) 495 while (count--)
260 { 496 {
261 base->head = 0; 497 base->head = 0;
… …
264 500
265 ++base; 501 ++base;
266 } 502 }
267} 503}
268 504
269static void 505void inline_speed
270event (EV_P_ W w, int events)
271{
272 if (w->pending)
273 {
274 pendings [ABSPRI (w)][w->pending - 1].events |= events;
275 return;
276 }
277
278 w->pending = ++pendingcnt [ABSPRI (w)];
279 array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], );
280 pendings [ABSPRI (w)][w->pending - 1].w = w;
281 pendings [ABSPRI (w)][w->pending - 1].events = events;
282}
283
284static void
285queue_events (EV_P_ W *events, int eventcnt, int type)
286{
287 int i;
288
289 for (i = 0; i < eventcnt; ++i)
290 event (EV_A_ events [i], type);
291}
292
293static void
294fd_event (EV_P_ int fd, int events) 506fd_event (EV_P_ int fd, int revents)
295{ 507{
296 ANFD *anfd = anfds + fd; 508 ANFD *anfd = anfds + fd;
297 struct ev_io *w; 509 ev_io *w;
298 510
299 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)
300 { 512 {
301 int ev = w->events & events; 513 int ev = w->events & revents;
302 514
303 if (ev) 515 if (ev)
304 event (EV_A_ (W)w, ev); 516 ev_feed_event (EV_A_ (W)w, ev);
305 } 517 }
306} 518}
307 519
308/*****************************************************************************/ 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}
309 526
310static void 527void inline_size
311fd_reify (EV_P) 528fd_reify (EV_P)
312{ 529{
313 int i; 530 int i;
314 531
315 for (i = 0; i < fdchangecnt; ++i) 532 for (i = 0; i < fdchangecnt; ++i)
316 { 533 {
317 int fd = fdchanges [i]; 534 int fd = fdchanges [i];
318 ANFD *anfd = anfds + fd; 535 ANFD *anfd = anfds + fd;
319 struct ev_io *w; 536 ev_io *w;
320 537
321 int events = 0; 538 int events = 0;
322 539
323 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)
324 events |= w->events; 541 events |= w->events;
325 542
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
326 anfd->reify = 0; 552 anfd->reify = 0;
327 553
328 method_modify (EV_A_ fd, anfd->events, events); 554 backend_modify (EV_A_ fd, anfd->events, events);
329 anfd->events = events; 555 anfd->events = events;
330 } 556 }
331 557
332 fdchangecnt = 0; 558 fdchangecnt = 0;
333} 559}
334 560
335static void 561void inline_size
336fd_change (EV_P_ int fd) 562fd_change (EV_P_ int fd)
337{ 563{
338 if (anfds [fd].reify || fdchangecnt < 0) 564 if (expect_false (anfds [fd].reify))
339 return; 565 return;
340 566
341 anfds [fd].reify = 1; 567 anfds [fd].reify = 1;
342 568
343 ++fdchangecnt; 569 ++fdchangecnt;
344 array_needsize (fdchanges, fdchangemax, fdchangecnt, ); 570 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
345 fdchanges [fdchangecnt - 1] = fd; 571 fdchanges [fdchangecnt - 1] = fd;
346} 572}
347 573
348static void 574void inline_speed
349fd_kill (EV_P_ int fd) 575fd_kill (EV_P_ int fd)
350{ 576{
351 struct ev_io *w; 577 ev_io *w;
352 578
353 while ((w = (struct ev_io *)anfds [fd].head)) 579 while ((w = (ev_io *)anfds [fd].head))
354 { 580 {
355 ev_io_stop (EV_A_ w); 581 ev_io_stop (EV_A_ w);
356 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);
357 } 583 }
584}
585
586int inline_size
587fd_valid (int fd)
588{
589#ifdef _WIN32
590 return _get_osfhandle (fd) != -1;
591#else
592 return fcntl (fd, F_GETFD) != -1;
593#endif
358} 594}
359 595
360/* called on EBADF to verify fds */ 596/* called on EBADF to verify fds */
361static void 597static void noinline
362fd_ebadf (EV_P) 598fd_ebadf (EV_P)
363{ 599{
364 int fd; 600 int fd;
365 601
366 for (fd = 0; fd < anfdmax; ++fd) 602 for (fd = 0; fd < anfdmax; ++fd)
367 if (anfds [fd].events) 603 if (anfds [fd].events)
368 if (fcntl (fd, F_GETFD) == -1 && errno == EBADF) 604 if (!fd_valid (fd) == -1 && errno == EBADF)
369 fd_kill (EV_A_ fd); 605 fd_kill (EV_A_ fd);
370} 606}
371 607
372/* 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 */
373static void 609static void noinline
374fd_enomem (EV_P) 610fd_enomem (EV_P)
375{ 611{
376 int fd; 612 int fd;
377 613
378 for (fd = anfdmax; fd--; ) 614 for (fd = anfdmax; fd--; )
… …
381 fd_kill (EV_A_ fd); 617 fd_kill (EV_A_ fd);
382 return; 618 return;
383 } 619 }
384} 620}
385 621
386/* susually 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 */
387static void 623static void noinline
388fd_rearm_all (EV_P) 624fd_rearm_all (EV_P)
389{ 625{
390 int fd; 626 int fd;
391 627
392 /* this should be highly optimised to not do anything but set a flag */
393 for (fd = 0; fd < anfdmax; ++fd) 628 for (fd = 0; fd < anfdmax; ++fd)
394 if (anfds [fd].events) 629 if (anfds [fd].events)
395 { 630 {
396 anfds [fd].events = 0; 631 anfds [fd].events = 0;
397 fd_change (EV_A_ fd); 632 fd_change (EV_A_ fd);
398 } 633 }
399} 634}
400 635
401/*****************************************************************************/ 636/*****************************************************************************/
402 637
403static void 638void inline_speed
404upheap (WT *heap, int k) 639upheap (WT *heap, int k)
405{ 640{
406 WT w = heap [k]; 641 WT w = heap [k];
407 642
408 while (k && heap [k >> 1]->at > w->at) 643 while (k && heap [k >> 1]->at > w->at)
… …
415 heap [k] = w; 650 heap [k] = w;
416 ((W)heap [k])->active = k + 1; 651 ((W)heap [k])->active = k + 1;
417 652
418} 653}
419 654
420static void 655void inline_speed
421downheap (WT *heap, int N, int k) 656downheap (WT *heap, int N, int k)
422{ 657{
423 WT w = heap [k]; 658 WT w = heap [k];
424 659
425 while (k < (N >> 1)) 660 while (k < (N >> 1))
… …
439 674
440 heap [k] = w; 675 heap [k] = w;
441 ((W)heap [k])->active = k + 1; 676 ((W)heap [k])->active = k + 1;
442} 677}
443 678
679void inline_size
680adjustheap (WT *heap, int N, int k)
681{
682 upheap (heap, k);
683 downheap (heap, N, k);
684}
685
444/*****************************************************************************/ 686/*****************************************************************************/
445 687
446typedef struct 688typedef struct
447{ 689{
448 WL head; 690 WL head;
… …
452static ANSIG *signals; 694static ANSIG *signals;
453static int signalmax; 695static int signalmax;
454 696
455static int sigpipe [2]; 697static int sigpipe [2];
456static sig_atomic_t volatile gotsig; 698static sig_atomic_t volatile gotsig;
457static struct ev_io sigev; 699static ev_io sigev;
458 700
459static void 701void inline_size
460signals_init (ANSIG *base, int count) 702signals_init (ANSIG *base, int count)
461{ 703{
462 while (count--) 704 while (count--)
463 { 705 {
464 base->head = 0; 706 base->head = 0;
… …
469} 711}
470 712
471static void 713static void
472sighandler (int signum) 714sighandler (int signum)
473{ 715{
474#if WIN32 716#if _WIN32
475 signal (signum, sighandler); 717 signal (signum, sighandler);
476#endif 718#endif
477 719
478 signals [signum - 1].gotsig = 1; 720 signals [signum - 1].gotsig = 1;
479 721
… …
484 write (sigpipe [1], &signum, 1); 726 write (sigpipe [1], &signum, 1);
485 errno = old_errno; 727 errno = old_errno;
486 } 728 }
487} 729}
488 730
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
489static void 751static void
490sigcb (EV_P_ struct ev_io *iow, int revents) 752sigcb (EV_P_ ev_io *iow, int revents)
491{ 753{
492 WL w;
493 int signum; 754 int signum;
494 755
495 read (sigpipe [0], &revents, 1); 756 read (sigpipe [0], &revents, 1);
496 gotsig = 0; 757 gotsig = 0;
497 758
498 for (signum = signalmax; signum--; ) 759 for (signum = signalmax; signum--; )
499 if (signals [signum].gotsig) 760 if (signals [signum].gotsig)
500 { 761 ev_feed_signal_event (EV_A_ signum + 1);
501 signals [signum].gotsig = 0;
502
503 for (w = signals [signum].head; w; w = w->next)
504 event (EV_A_ (W)w, EV_SIGNAL);
505 }
506} 762}
507 763
508static 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
509siginit (EV_P) 777siginit (EV_P)
510{ 778{
511#ifndef WIN32 779 fd_intern (sigpipe [0]);
512 fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC); 780 fd_intern (sigpipe [1]);
513 fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
514
515 /* rather than sort out wether we really need nb, set it */
516 fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
517 fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
518#endif
519 781
520 ev_io_set (&sigev, sigpipe [0], EV_READ); 782 ev_io_set (&sigev, sigpipe [0], EV_READ);
521 ev_io_start (EV_A_ &sigev); 783 ev_io_start (EV_A_ &sigev);
522 ev_unref (EV_A); /* child watcher should not keep loop alive */ 784 ev_unref (EV_A); /* child watcher should not keep loop alive */
523} 785}
524 786
525/*****************************************************************************/ 787/*****************************************************************************/
526 788
789static ev_child *childs [EV_PID_HASHSIZE];
790
527#ifndef WIN32 791#ifndef _WIN32
528 792
529static struct ev_child *childs [PID_HASHSIZE];
530static 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}
531 809
532#ifndef WCONTINUED 810#ifndef WCONTINUED
533# define WCONTINUED 0 811# define WCONTINUED 0
534#endif 812#endif
535 813
536static void 814static void
537child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
538{
539 struct ev_child *w;
540
541 for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
542 if (w->pid == pid || !w->pid)
543 {
544 ev_priority (w) = ev_priority (sw); /* need to do it *now* */
545 w->rpid = pid;
546 w->rstatus = status;
547 event (EV_A_ (W)w, EV_CHILD);
548 }
549}
550
551static void
552childcb (EV_P_ struct ev_signal *sw, int revents) 815childcb (EV_P_ ev_signal *sw, int revents)
553{ 816{
554 int pid, status; 817 int pid, status;
555 818
819 /* some systems define WCONTINUED but then fail to support it (linux 2.4) */
556 if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) 820 if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
557 { 821 if (!WCONTINUED
822 || errno != EINVAL
823 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
824 return;
825
558 /* 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 */
559 event (EV_A_ (W)sw, EV_SIGNAL); 828 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
560 829
561 child_reap (EV_A_ sw, pid, pid, status); 830 child_reap (EV_A_ sw, pid, pid, status);
831 if (EV_PID_HASHSIZE > 1)
562 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 */
563 }
564} 833}
565 834
566#endif 835#endif
567 836
568/*****************************************************************************/ 837/*****************************************************************************/
569 838
839#if EV_USE_PORT
840# include "ev_port.c"
841#endif
570#if EV_USE_KQUEUE 842#if EV_USE_KQUEUE
571# include "ev_kqueue.c" 843# include "ev_kqueue.c"
572#endif 844#endif
573#if EV_USE_EPOLL 845#if EV_USE_EPOLL
574# include "ev_epoll.c" 846# include "ev_epoll.c"
… …
591{ 863{
592 return EV_VERSION_MINOR; 864 return EV_VERSION_MINOR;
593} 865}
594 866
595/* 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 */
596static int 868int inline_size
597enable_secure (void) 869enable_secure (void)
598{ 870{
599#ifdef WIN32 871#ifdef _WIN32
600 return 0; 872 return 0;
601#else 873#else
602 return getuid () != geteuid () 874 return getuid () != geteuid ()
603 || getgid () != getegid (); 875 || getgid () != getegid ();
604#endif 876#endif
605} 877}
606 878
607int 879unsigned int
608ev_method (EV_P) 880ev_supported_backends (void)
609{ 881{
610 return method; 882 unsigned int flags = 0;
611}
612 883
613static void 884 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
614loop_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)
615{ 895{
616 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)
617 { 935 {
618#if EV_USE_MONOTONIC 936#if EV_USE_MONOTONIC
619 { 937 {
620 struct timespec ts; 938 struct timespec ts;
621 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 939 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
622 have_monotonic = 1; 940 have_monotonic = 1;
623 } 941 }
624#endif 942#endif
625 943
626 rt_now = ev_time (); 944 ev_rt_now = ev_time ();
627 mn_now = get_clock (); 945 mn_now = get_clock ();
628 now_floor = mn_now; 946 now_floor = mn_now;
629 rtmn_diff = rt_now - mn_now; 947 rtmn_diff = ev_rt_now - mn_now;
630 948
631 if (methods == EVMETHOD_AUTO) 949 /* pid check not overridable via env */
632 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"))
633 methods = atoi (getenv ("LIBEV_METHODS")); 958 flags = atoi (getenv ("LIBEV_FLAGS"));
634 else
635 methods = EVMETHOD_ANY;
636 959
637 method = 0; 960 if (!(flags & 0x0000ffffUL))
961 flags |= ev_recommended_backends ();
962
963 backend = 0;
964 backend_fd = -1;
638#if EV_USE_WIN32 965#if EV_USE_INOTIFY
639 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);
640#endif 971#endif
641#if EV_USE_KQUEUE 972#if EV_USE_KQUEUE
642 if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods); 973 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
643#endif 974#endif
644#if EV_USE_EPOLL 975#if EV_USE_EPOLL
645 if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods); 976 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
646#endif 977#endif
647#if EV_USE_POLL 978#if EV_USE_POLL
648 if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods); 979 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
649#endif 980#endif
650#if EV_USE_SELECT 981#if EV_USE_SELECT
651 if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods); 982 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
652#endif 983#endif
653 }
654}
655 984
656void 985 ev_init (&sigev, sigcb);
986 ev_set_priority (&sigev, EV_MAXPRI);
987 }
988}
989
990static void noinline
657loop_destroy (EV_P) 991loop_destroy (EV_P)
658{ 992{
659 int i; 993 int i;
660 994
661#if EV_USE_WIN32 995#if EV_USE_INOTIFY
662 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);
663#endif 1005#endif
664#if EV_USE_KQUEUE 1006#if EV_USE_KQUEUE
665 if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A); 1007 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
666#endif 1008#endif
667#if EV_USE_EPOLL 1009#if EV_USE_EPOLL
668 if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A); 1010 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
669#endif 1011#endif
670#if EV_USE_POLL 1012#if EV_USE_POLL
671 if (method == EVMETHOD_POLL ) poll_destroy (EV_A); 1013 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
672#endif 1014#endif
673#if EV_USE_SELECT 1015#if EV_USE_SELECT
674 if (method == EVMETHOD_SELECT) select_destroy (EV_A); 1016 if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
675#endif 1017#endif
676 1018
677 for (i = NUMPRI; i--; ) 1019 for (i = NUMPRI; i--; )
1020 {
678 array_free (pending, [i]); 1021 array_free (pending, [i]);
1022#if EV_IDLE_ENABLE
1023 array_free (idle, [i]);
1024#endif
1025 }
679 1026
1027 /* have to use the microsoft-never-gets-it-right macro */
680 array_free (fdchange, ); 1028 array_free (fdchange, EMPTY);
681 array_free (timer, ); 1029 array_free (timer, EMPTY);
1030#if EV_PERIODIC_ENABLE
682 array_free (periodic, ); 1031 array_free (periodic, EMPTY);
683 array_free (idle, ); 1032#endif
684 array_free (prepare, ); 1033 array_free (prepare, EMPTY);
685 array_free (check, ); 1034 array_free (check, EMPTY);
686 1035
687 method = 0; 1036 backend = 0;
688 /*TODO*/
689} 1037}
690 1038
691void 1039void inline_size infy_fork (EV_P);
1040
1041void inline_size
692loop_fork (EV_P) 1042loop_fork (EV_P)
693{ 1043{
694 /*TODO*/ 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
695#if EV_USE_EPOLL 1050#if EV_USE_EPOLL
696 if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A); 1051 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
697#endif 1052#endif
698#if EV_USE_KQUEUE 1053#if EV_USE_INOTIFY
699 if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A); 1054 infy_fork (EV_A);
700#endif 1055#endif
1056
1057 if (ev_is_active (&sigev))
1058 {
1059 /* default loop */
1060
1061 ev_ref (EV_A);
1062 ev_io_stop (EV_A_ &sigev);
1063 close (sigpipe [0]);
1064 close (sigpipe [1]);
1065
1066 while (pipe (sigpipe))
1067 syserr ("(libev) error creating pipe");
1068
1069 siginit (EV_A);
1070 }
1071
1072 postfork = 0;
701} 1073}
702 1074
703#if EV_MULTIPLICITY 1075#if EV_MULTIPLICITY
704struct ev_loop * 1076struct ev_loop *
705ev_loop_new (int methods) 1077ev_loop_new (unsigned int flags)
706{ 1078{
707 struct ev_loop *loop = (struct ev_loop *)calloc (1, sizeof (struct ev_loop)); 1079 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
708 1080
1081 memset (loop, 0, sizeof (struct ev_loop));
1082
709 loop_init (EV_A_ methods); 1083 loop_init (EV_A_ flags);
710 1084
711 if (ev_method (EV_A)) 1085 if (ev_backend (EV_A))
712 return loop; 1086 return loop;
713 1087
714 return 0; 1088 return 0;
715} 1089}
716 1090
717void 1091void
718ev_loop_destroy (EV_P) 1092ev_loop_destroy (EV_P)
719{ 1093{
720 loop_destroy (EV_A); 1094 loop_destroy (EV_A);
721 free (loop); 1095 ev_free (loop);
722} 1096}
723 1097
724void 1098void
725ev_loop_fork (EV_P) 1099ev_loop_fork (EV_P)
726{ 1100{
727 loop_fork (EV_A); 1101 postfork = 1;
728} 1102}
729 1103
730#endif 1104#endif
731 1105
732#if EV_MULTIPLICITY 1106#if EV_MULTIPLICITY
733struct ev_loop default_loop_struct;
734static struct ev_loop *default_loop;
735
736struct ev_loop * 1107struct ev_loop *
1108ev_default_loop_init (unsigned int flags)
737#else 1109#else
738static int default_loop;
739
740int 1110int
1111ev_default_loop (unsigned int flags)
741#endif 1112#endif
742ev_default_loop (int methods)
743{ 1113{
744 if (sigpipe [0] == sigpipe [1]) 1114 if (sigpipe [0] == sigpipe [1])
745 if (pipe (sigpipe)) 1115 if (pipe (sigpipe))
746 return 0; 1116 return 0;
747 1117
748 if (!default_loop) 1118 if (!ev_default_loop_ptr)
749 { 1119 {
750#if EV_MULTIPLICITY 1120#if EV_MULTIPLICITY
751 struct ev_loop *loop = default_loop = &default_loop_struct; 1121 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
752#else 1122#else
753 default_loop = 1; 1123 ev_default_loop_ptr = 1;
754#endif 1124#endif
755 1125
756 loop_init (EV_A_ methods); 1126 loop_init (EV_A_ flags);
757 1127
758 if (ev_method (EV_A)) 1128 if (ev_backend (EV_A))
759 { 1129 {
760 ev_watcher_init (&sigev, sigcb);
761 ev_set_priority (&sigev, EV_MAXPRI);
762 siginit (EV_A); 1130 siginit (EV_A);
763 1131
764#ifndef WIN32 1132#ifndef _WIN32
765 ev_signal_init (&childev, childcb, SIGCHLD); 1133 ev_signal_init (&childev, childcb, SIGCHLD);
766 ev_set_priority (&childev, EV_MAXPRI); 1134 ev_set_priority (&childev, EV_MAXPRI);
767 ev_signal_start (EV_A_ &childev); 1135 ev_signal_start (EV_A_ &childev);
768 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1136 ev_unref (EV_A); /* child watcher should not keep loop alive */
769#endif 1137#endif
770 } 1138 }
771 else 1139 else
772 default_loop = 0; 1140 ev_default_loop_ptr = 0;
773 } 1141 }
774 1142
775 return default_loop; 1143 return ev_default_loop_ptr;
776} 1144}
777 1145
778void 1146void
779ev_default_destroy (void) 1147ev_default_destroy (void)
780{ 1148{
781#if EV_MULTIPLICITY 1149#if EV_MULTIPLICITY
782 struct ev_loop *loop = default_loop; 1150 struct ev_loop *loop = ev_default_loop_ptr;
783#endif 1151#endif
784 1152
1153#ifndef _WIN32
785 ev_ref (EV_A); /* child watcher */ 1154 ev_ref (EV_A); /* child watcher */
786 ev_signal_stop (EV_A_ &childev); 1155 ev_signal_stop (EV_A_ &childev);
1156#endif
787 1157
788 ev_ref (EV_A); /* signal watcher */ 1158 ev_ref (EV_A); /* signal watcher */
789 ev_io_stop (EV_A_ &sigev); 1159 ev_io_stop (EV_A_ &sigev);
790 1160
791 close (sigpipe [0]); sigpipe [0] = 0; 1161 close (sigpipe [0]); sigpipe [0] = 0;
… …
796 1166
797void 1167void
798ev_default_fork (void) 1168ev_default_fork (void)
799{ 1169{
800#if EV_MULTIPLICITY 1170#if EV_MULTIPLICITY
801 struct ev_loop *loop = default_loop; 1171 struct ev_loop *loop = ev_default_loop_ptr;
802#endif 1172#endif
803 1173
804 loop_fork (EV_A); 1174 if (backend)
805 1175 postfork = 1;
806 ev_io_stop (EV_A_ &sigev);
807 close (sigpipe [0]);
808 close (sigpipe [1]);
809 pipe (sigpipe);
810
811 ev_ref (EV_A); /* signal watcher */
812 siginit (EV_A);
813} 1176}
814 1177
815/*****************************************************************************/ 1178/*****************************************************************************/
816 1179
817static void 1180void
1181ev_invoke (EV_P_ void *w, int revents)
1182{
1183 EV_CB_INVOKE ((W)w, revents);
1184}
1185
1186void inline_speed
818call_pending (EV_P) 1187call_pending (EV_P)
819{ 1188{
820 int pri; 1189 int pri;
821 1190
822 for (pri = NUMPRI; pri--; ) 1191 for (pri = NUMPRI; pri--; )
823 while (pendingcnt [pri]) 1192 while (pendingcnt [pri])
824 { 1193 {
825 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 1194 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
826 1195
827 if (p->w) 1196 if (expect_true (p->w))
828 { 1197 {
1198 /*assert (("non-pending watcher on pending list", p->w->pending));*/
1199
829 p->w->pending = 0; 1200 p->w->pending = 0;
830 p->w->cb (EV_A_ p->w, p->events); 1201 EV_CB_INVOKE (p->w, p->events);
831 } 1202 }
832 } 1203 }
833} 1204}
834 1205
835static void 1206void inline_size
836timers_reify (EV_P) 1207timers_reify (EV_P)
837{ 1208{
838 while (timercnt && ((WT)timers [0])->at <= mn_now) 1209 while (timercnt && ((WT)timers [0])->at <= mn_now)
839 { 1210 {
840 struct ev_timer *w = timers [0]; 1211 ev_timer *w = timers [0];
841 1212
842 assert (("inactive timer on timer heap detected", ev_is_active (w))); 1213 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
843 1214
844 /* first reschedule or stop timer */ 1215 /* first reschedule or stop timer */
845 if (w->repeat) 1216 if (w->repeat)
846 { 1217 {
847 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
848 ((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
849 downheap ((WT *)timers, timercnt, 0); 1224 downheap ((WT *)timers, timercnt, 0);
850 } 1225 }
851 else 1226 else
852 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ 1227 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
853 1228
854 event (EV_A_ (W)w, EV_TIMEOUT); 1229 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
855 } 1230 }
856} 1231}
857 1232
858static void 1233#if EV_PERIODIC_ENABLE
1234void inline_size
859periodics_reify (EV_P) 1235periodics_reify (EV_P)
860{ 1236{
861 while (periodiccnt && ((WT)periodics [0])->at <= rt_now) 1237 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
862 { 1238 {
863 struct ev_periodic *w = periodics [0]; 1239 ev_periodic *w = periodics [0];
864 1240
865 assert (("inactive timer on periodic heap detected", ev_is_active (w))); 1241 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
866 1242
867 /* first reschedule or stop timer */ 1243 /* first reschedule or stop timer */
868 if (w->interval) 1244 if (w->reschedule_cb)
869 { 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 {
870 ((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;
871 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));
872 downheap ((WT *)periodics, periodiccnt, 0); 1255 downheap ((WT *)periodics, periodiccnt, 0);
873 } 1256 }
874 else 1257 else
875 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 1258 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
876 1259
877 event (EV_A_ (W)w, EV_PERIODIC); 1260 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
878 } 1261 }
879} 1262}
880 1263
881static void 1264static void noinline
882periodics_reschedule (EV_P) 1265periodics_reschedule (EV_P)
883{ 1266{
884 int i; 1267 int i;
885 1268
886 /* adjust periodics after time jump */ 1269 /* adjust periodics after time jump */
887 for (i = 0; i < periodiccnt; ++i) 1270 for (i = 0; i < periodiccnt; ++i)
888 { 1271 {
889 struct ev_periodic *w = periodics [i]; 1272 ev_periodic *w = periodics [i];
890 1273
1274 if (w->reschedule_cb)
1275 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
891 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--; )
892 { 1295 {
893 ev_tstamp diff = ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval; 1296 if (pendingcnt [pri])
1297 break;
894 1298
895 if (fabs (diff) >= 1e-4) 1299 if (idlecnt [pri])
896 { 1300 {
897 ev_periodic_stop (EV_A_ w); 1301 queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
898 ev_periodic_start (EV_A_ w); 1302 break;
899
900 i = 0; /* restart loop, inefficient, but time jumps should be rare */
901 } 1303 }
902 } 1304 }
903 } 1305 }
904} 1306}
1307#endif
905 1308
906inline int 1309void inline_speed
907time_update_monotonic (EV_P) 1310time_update (EV_P_ ev_tstamp max_block)
908{
909 mn_now = get_clock ();
910
911 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
912 {
913 rt_now = rtmn_diff + mn_now;
914 return 0;
915 }
916 else
917 {
918 now_floor = mn_now;
919 rt_now = ev_time ();
920 return 1;
921 }
922}
923
924static void
925time_update (EV_P)
926{ 1311{
927 int i; 1312 int i;
928 1313
929#if EV_USE_MONOTONIC 1314#if EV_USE_MONOTONIC
930 if (expect_true (have_monotonic)) 1315 if (expect_true (have_monotonic))
931 { 1316 {
932 if (time_update_monotonic (EV_A)) 1317 ev_tstamp odiff = rtmn_diff;
1318
1319 mn_now = get_clock ();
1320
1321 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
1322 /* interpolate in the meantime */
1323 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
933 { 1324 {
934 ev_tstamp odiff = rtmn_diff; 1325 ev_rt_now = rtmn_diff + mn_now;
1326 return;
1327 }
935 1328
1329 now_floor = mn_now;
1330 ev_rt_now = ev_time ();
1331
936 for (i = 4; --i; ) /* loop a few times, before making important decisions */ 1332 /* loop a few times, before making important decisions.
1333 * on the choice of "4": one iteration isn't enough,
1334 * in case we get preempted during the calls to
1335 * ev_time and get_clock. a second call is almost guaranteed
1336 * to succeed in that case, though. and looping a few more times
1337 * doesn't hurt either as we only do this on time-jumps or
1338 * in the unlikely event of having been preempted here.
1339 */
1340 for (i = 4; --i; )
937 { 1341 {
938 rtmn_diff = rt_now - mn_now; 1342 rtmn_diff = ev_rt_now - mn_now;
939 1343
940 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) 1344 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
941 return; /* all is well */ 1345 return; /* all is well */
942 1346
943 rt_now = ev_time (); 1347 ev_rt_now = ev_time ();
944 mn_now = get_clock (); 1348 mn_now = get_clock ();
945 now_floor = mn_now; 1349 now_floor = mn_now;
946 } 1350 }
947 1351
1352# if EV_PERIODIC_ENABLE
1353 periodics_reschedule (EV_A);
1354# endif
1355 /* no timer adjustment, as the monotonic clock doesn't jump */
1356 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1357 }
1358 else
1359#endif
1360 {
1361 ev_rt_now = ev_time ();
1362
1363 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1364 {
1365#if EV_PERIODIC_ENABLE
948 periodics_reschedule (EV_A); 1366 periodics_reschedule (EV_A);
949 /* no timer adjustment, as the monotonic clock doesn't jump */ 1367#endif
950 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */ 1368 /* adjust timers. this is easy, as the offset is the same for all of them */
1369 for (i = 0; i < timercnt; ++i)
1370 ((WT)timers [i])->at += ev_rt_now - mn_now;
951 } 1371 }
952 }
953 else
954#endif
955 {
956 rt_now = ev_time ();
957 1372
958 if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
959 {
960 periodics_reschedule (EV_A);
961
962 /* adjust timers. this is easy, as the offset is the same for all */
963 for (i = 0; i < timercnt; ++i)
964 ((WT)timers [i])->at += rt_now - mn_now;
965 }
966
967 mn_now = rt_now; 1373 mn_now = ev_rt_now;
968 } 1374 }
969} 1375}
970 1376
971void 1377void
972ev_ref (EV_P) 1378ev_ref (EV_P)
… …
983static int loop_done; 1389static int loop_done;
984 1390
985void 1391void
986ev_loop (EV_P_ int flags) 1392ev_loop (EV_P_ int flags)
987{ 1393{
988 double block;
989 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0; 1394 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
1395 ? EVUNLOOP_ONE
1396 : EVUNLOOP_CANCEL;
1397
1398 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
990 1399
991 do 1400 do
992 { 1401 {
1402#ifndef _WIN32
1403 if (expect_false (curpid)) /* penalise the forking check even more */
1404 if (expect_false (getpid () != curpid))
1405 {
1406 curpid = getpid ();
1407 postfork = 1;
1408 }
1409#endif
1410
1411#if EV_FORK_ENABLE
1412 /* we might have forked, so queue fork handlers */
1413 if (expect_false (postfork))
1414 if (forkcnt)
1415 {
1416 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1417 call_pending (EV_A);
1418 }
1419#endif
1420
993 /* queue check watchers (and execute them) */ 1421 /* queue prepare watchers (and execute them) */
994 if (expect_false (preparecnt)) 1422 if (expect_false (preparecnt))
995 { 1423 {
996 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 1424 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
997 call_pending (EV_A); 1425 call_pending (EV_A);
998 } 1426 }
999 1427
1428 if (expect_false (!activecnt))
1429 break;
1430
1431 /* we might have forked, so reify kernel state if necessary */
1432 if (expect_false (postfork))
1433 loop_fork (EV_A);
1434
1000 /* update fd-related kernel structures */ 1435 /* update fd-related kernel structures */
1001 fd_reify (EV_A); 1436 fd_reify (EV_A);
1002 1437
1003 /* calculate blocking time */ 1438 /* calculate blocking time */
1439 {
1440 ev_tstamp block;
1004 1441
1005 /* we only need this for !monotonic clockor timers, but as we basically 1442 if (expect_false (flags & EVLOOP_NONBLOCK || idleall || !activecnt))
1006 always have timers, we just calculate it always */ 1443 block = 0.; /* do not block at all */
1007#if EV_USE_MONOTONIC
1008 if (expect_true (have_monotonic))
1009 time_update_monotonic (EV_A);
1010 else 1444 else
1011#endif
1012 { 1445 {
1013 rt_now = ev_time (); 1446 /* update time to cancel out callback processing overhead */
1014 mn_now = rt_now; 1447 time_update (EV_A_ 1e100);
1015 }
1016 1448
1017 if (flags & EVLOOP_NONBLOCK || idlecnt)
1018 block = 0.;
1019 else
1020 {
1021 block = MAX_BLOCKTIME; 1449 block = MAX_BLOCKTIME;
1022 1450
1023 if (timercnt) 1451 if (timercnt)
1024 { 1452 {
1025 ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge; 1453 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1026 if (block > to) block = to; 1454 if (block > to) block = to;
1027 } 1455 }
1028 1456
1457#if EV_PERIODIC_ENABLE
1029 if (periodiccnt) 1458 if (periodiccnt)
1030 { 1459 {
1031 ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge; 1460 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1032 if (block > to) block = to; 1461 if (block > to) block = to;
1033 } 1462 }
1463#endif
1034 1464
1035 if (block < 0.) block = 0.; 1465 if (expect_false (block < 0.)) block = 0.;
1036 } 1466 }
1037 1467
1468 ++loop_count;
1038 method_poll (EV_A_ block); 1469 backend_poll (EV_A_ block);
1039 1470
1040 /* update rt_now, do magic */ 1471 /* update ev_rt_now, do magic */
1041 time_update (EV_A); 1472 time_update (EV_A_ block);
1473 }
1042 1474
1043 /* queue pending timers and reschedule them */ 1475 /* queue pending timers and reschedule them */
1044 timers_reify (EV_A); /* relative timers called last */ 1476 timers_reify (EV_A); /* relative timers called last */
1477#if EV_PERIODIC_ENABLE
1045 periodics_reify (EV_A); /* absolute timers called first */ 1478 periodics_reify (EV_A); /* absolute timers called first */
1479#endif
1046 1480
1481#if EV_IDLE_ENABLE
1047 /* queue idle watchers unless io or timers are pending */ 1482 /* queue idle watchers unless other events are pending */
1048 if (!pendingcnt) 1483 idle_reify (EV_A);
1049 queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); 1484#endif
1050 1485
1051 /* queue check watchers, to be executed first */ 1486 /* queue check watchers, to be executed first */
1052 if (checkcnt) 1487 if (expect_false (checkcnt))
1053 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 1488 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1054 1489
1055 call_pending (EV_A); 1490 call_pending (EV_A);
1491
1056 } 1492 }
1057 while (activecnt && !loop_done); 1493 while (expect_true (activecnt && !loop_done));
1058 1494
1059 if (loop_done != 2) 1495 if (loop_done == EVUNLOOP_ONE)
1060 loop_done = 0; 1496 loop_done = EVUNLOOP_CANCEL;
1061} 1497}
1062 1498
1063void 1499void
1064ev_unloop (EV_P_ int how) 1500ev_unloop (EV_P_ int how)
1065{ 1501{
1066 loop_done = how; 1502 loop_done = how;
1067} 1503}
1068 1504
1069/*****************************************************************************/ 1505/*****************************************************************************/
1070 1506
1071inline void 1507void inline_size
1072wlist_add (WL *head, WL elem) 1508wlist_add (WL *head, WL elem)
1073{ 1509{
1074 elem->next = *head; 1510 elem->next = *head;
1075 *head = elem; 1511 *head = elem;
1076} 1512}
1077 1513
1078inline void 1514void inline_size
1079wlist_del (WL *head, WL elem) 1515wlist_del (WL *head, WL elem)
1080{ 1516{
1081 while (*head) 1517 while (*head)
1082 { 1518 {
1083 if (*head == elem) 1519 if (*head == elem)
… …
1088 1524
1089 head = &(*head)->next; 1525 head = &(*head)->next;
1090 } 1526 }
1091} 1527}
1092 1528
1093inline void 1529void inline_speed
1094ev_clear_pending (EV_P_ W w) 1530clear_pending (EV_P_ W w)
1095{ 1531{
1096 if (w->pending) 1532 if (w->pending)
1097 { 1533 {
1098 pendings [ABSPRI (w)][w->pending - 1].w = 0; 1534 pendings [ABSPRI (w)][w->pending - 1].w = 0;
1099 w->pending = 0; 1535 w->pending = 0;
1100 } 1536 }
1101} 1537}
1102 1538
1103inline void 1539int
1540ev_clear_pending (EV_P_ void *w)
1541{
1542 W w_ = (W)w;
1543 int pending = w_->pending;
1544
1545 if (expect_true (pending))
1546 {
1547 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
1548 w_->pending = 0;
1549 p->w = 0;
1550 return p->events;
1551 }
1552 else
1553 return 0;
1554}
1555
1556void inline_size
1557pri_adjust (EV_P_ W w)
1558{
1559 int pri = w->priority;
1560 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1561 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1562 w->priority = pri;
1563}
1564
1565void inline_speed
1104ev_start (EV_P_ W w, int active) 1566ev_start (EV_P_ W w, int active)
1105{ 1567{
1106 if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; 1568 pri_adjust (EV_A_ w);
1107 if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1108
1109 w->active = active; 1569 w->active = active;
1110 ev_ref (EV_A); 1570 ev_ref (EV_A);
1111} 1571}
1112 1572
1113inline void 1573void inline_size
1114ev_stop (EV_P_ W w) 1574ev_stop (EV_P_ W w)
1115{ 1575{
1116 ev_unref (EV_A); 1576 ev_unref (EV_A);
1117 w->active = 0; 1577 w->active = 0;
1118} 1578}
1119 1579
1120/*****************************************************************************/ 1580/*****************************************************************************/
1121 1581
1122void 1582void noinline
1123ev_io_start (EV_P_ struct ev_io *w) 1583ev_io_start (EV_P_ ev_io *w)
1124{ 1584{
1125 int fd = w->fd; 1585 int fd = w->fd;
1126 1586
1127 if (ev_is_active (w)) 1587 if (expect_false (ev_is_active (w)))
1128 return; 1588 return;
1129 1589
1130 assert (("ev_io_start called with negative fd", fd >= 0)); 1590 assert (("ev_io_start called with negative fd", fd >= 0));
1131 1591
1132 ev_start (EV_A_ (W)w, 1); 1592 ev_start (EV_A_ (W)w, 1);
1133 array_needsize (anfds, anfdmax, fd + 1, anfds_init); 1593 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1134 wlist_add ((WL *)&anfds[fd].head, (WL)w); 1594 wlist_add ((WL *)&anfds[fd].head, (WL)w);
1135 1595
1136 fd_change (EV_A_ fd); 1596 fd_change (EV_A_ fd);
1137} 1597}
1138 1598
1139void 1599void noinline
1140ev_io_stop (EV_P_ struct ev_io *w) 1600ev_io_stop (EV_P_ ev_io *w)
1141{ 1601{
1142 ev_clear_pending (EV_A_ (W)w); 1602 clear_pending (EV_A_ (W)w);
1143 if (!ev_is_active (w)) 1603 if (expect_false (!ev_is_active (w)))
1144 return; 1604 return;
1605
1606 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1145 1607
1146 wlist_del ((WL *)&anfds[w->fd].head, (WL)w); 1608 wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
1147 ev_stop (EV_A_ (W)w); 1609 ev_stop (EV_A_ (W)w);
1148 1610
1149 fd_change (EV_A_ w->fd); 1611 fd_change (EV_A_ w->fd);
1150} 1612}
1151 1613
1152void 1614void noinline
1153ev_timer_start (EV_P_ struct ev_timer *w) 1615ev_timer_start (EV_P_ ev_timer *w)
1154{ 1616{
1155 if (ev_is_active (w)) 1617 if (expect_false (ev_is_active (w)))
1156 return; 1618 return;
1157 1619
1158 ((WT)w)->at += mn_now; 1620 ((WT)w)->at += mn_now;
1159 1621
1160 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 1622 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1161 1623
1162 ev_start (EV_A_ (W)w, ++timercnt); 1624 ev_start (EV_A_ (W)w, ++timercnt);
1163 array_needsize (timers, timermax, timercnt, ); 1625 array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);
1164 timers [timercnt - 1] = w; 1626 timers [timercnt - 1] = w;
1165 upheap ((WT *)timers, timercnt - 1); 1627 upheap ((WT *)timers, timercnt - 1);
1166 1628
1629 /*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
1630}
1631
1632void noinline
1633ev_timer_stop (EV_P_ ev_timer *w)
1634{
1635 clear_pending (EV_A_ (W)w);
1636 if (expect_false (!ev_is_active (w)))
1637 return;
1638
1167 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 1639 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1168}
1169 1640
1170void 1641 {
1171ev_timer_stop (EV_P_ struct ev_timer *w) 1642 int active = ((W)w)->active;
1172{
1173 ev_clear_pending (EV_A_ (W)w);
1174 if (!ev_is_active (w))
1175 return;
1176 1643
1177 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 1644 if (expect_true (--active < --timercnt))
1178
1179 if (((W)w)->active < timercnt--)
1180 { 1645 {
1181 timers [((W)w)->active - 1] = timers [timercnt]; 1646 timers [active] = timers [timercnt];
1182 downheap ((WT *)timers, timercnt, ((W)w)->active - 1); 1647 adjustheap ((WT *)timers, timercnt, active);
1183 } 1648 }
1649 }
1184 1650
1185 ((WT)w)->at = w->repeat; 1651 ((WT)w)->at -= mn_now;
1186 1652
1187 ev_stop (EV_A_ (W)w); 1653 ev_stop (EV_A_ (W)w);
1188} 1654}
1189 1655
1190void 1656void noinline
1191ev_timer_again (EV_P_ struct ev_timer *w) 1657ev_timer_again (EV_P_ ev_timer *w)
1192{ 1658{
1193 if (ev_is_active (w)) 1659 if (ev_is_active (w))
1194 { 1660 {
1195 if (w->repeat) 1661 if (w->repeat)
1196 { 1662 {
1197 ((WT)w)->at = mn_now + w->repeat; 1663 ((WT)w)->at = mn_now + w->repeat;
1198 downheap ((WT *)timers, timercnt, ((W)w)->active - 1); 1664 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1199 } 1665 }
1200 else 1666 else
1201 ev_timer_stop (EV_A_ w); 1667 ev_timer_stop (EV_A_ w);
1202 } 1668 }
1203 else if (w->repeat) 1669 else if (w->repeat)
1670 {
1671 w->at = w->repeat;
1204 ev_timer_start (EV_A_ w); 1672 ev_timer_start (EV_A_ w);
1673 }
1205} 1674}
1206 1675
1207void 1676#if EV_PERIODIC_ENABLE
1677void noinline
1208ev_periodic_start (EV_P_ struct ev_periodic *w) 1678ev_periodic_start (EV_P_ ev_periodic *w)
1209{ 1679{
1210 if (ev_is_active (w)) 1680 if (expect_false (ev_is_active (w)))
1211 return; 1681 return;
1212 1682
1683 if (w->reschedule_cb)
1684 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1685 else if (w->interval)
1686 {
1213 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 1687 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1214
1215 /* this formula differs from the one in periodic_reify because we do not always round up */ 1688 /* this formula differs from the one in periodic_reify because we do not always round up */
1216 if (w->interval)
1217 ((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval; 1689 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1690 }
1691 else
1692 ((WT)w)->at = w->offset;
1218 1693
1219 ev_start (EV_A_ (W)w, ++periodiccnt); 1694 ev_start (EV_A_ (W)w, ++periodiccnt);
1220 array_needsize (periodics, periodicmax, periodiccnt, ); 1695 array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1221 periodics [periodiccnt - 1] = w; 1696 periodics [periodiccnt - 1] = w;
1222 upheap ((WT *)periodics, periodiccnt - 1); 1697 upheap ((WT *)periodics, periodiccnt - 1);
1223 1698
1699 /*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
1700}
1701
1702void noinline
1703ev_periodic_stop (EV_P_ ev_periodic *w)
1704{
1705 clear_pending (EV_A_ (W)w);
1706 if (expect_false (!ev_is_active (w)))
1707 return;
1708
1224 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1709 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1225}
1226 1710
1227void 1711 {
1228ev_periodic_stop (EV_P_ struct ev_periodic *w) 1712 int active = ((W)w)->active;
1229{
1230 ev_clear_pending (EV_A_ (W)w);
1231 if (!ev_is_active (w))
1232 return;
1233 1713
1234 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1714 if (expect_true (--active < --periodiccnt))
1235
1236 if (((W)w)->active < periodiccnt--)
1237 { 1715 {
1238 periodics [((W)w)->active - 1] = periodics [periodiccnt]; 1716 periodics [active] = periodics [periodiccnt];
1239 downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1); 1717 adjustheap ((WT *)periodics, periodiccnt, active);
1240 } 1718 }
1719 }
1241 1720
1242 ev_stop (EV_A_ (W)w); 1721 ev_stop (EV_A_ (W)w);
1243} 1722}
1244 1723
1245void 1724void noinline
1246ev_idle_start (EV_P_ struct ev_idle *w) 1725ev_periodic_again (EV_P_ ev_periodic *w)
1247{ 1726{
1248 if (ev_is_active (w)) 1727 /* TODO: use adjustheap and recalculation */
1249 return;
1250
1251 ev_start (EV_A_ (W)w, ++idlecnt);
1252 array_needsize (idles, idlemax, idlecnt, );
1253 idles [idlecnt - 1] = w;
1254}
1255
1256void
1257ev_idle_stop (EV_P_ struct ev_idle *w)
1258{
1259 ev_clear_pending (EV_A_ (W)w);
1260 if (ev_is_active (w))
1261 return;
1262
1263 idles [((W)w)->active - 1] = idles [--idlecnt];
1264 ev_stop (EV_A_ (W)w); 1728 ev_periodic_stop (EV_A_ w);
1729 ev_periodic_start (EV_A_ w);
1265} 1730}
1266 1731#endif
1267void
1268ev_prepare_start (EV_P_ struct ev_prepare *w)
1269{
1270 if (ev_is_active (w))
1271 return;
1272
1273 ev_start (EV_A_ (W)w, ++preparecnt);
1274 array_needsize (prepares, preparemax, preparecnt, );
1275 prepares [preparecnt - 1] = w;
1276}
1277
1278void
1279ev_prepare_stop (EV_P_ struct ev_prepare *w)
1280{
1281 ev_clear_pending (EV_A_ (W)w);
1282 if (ev_is_active (w))
1283 return;
1284
1285 prepares [((W)w)->active - 1] = prepares [--preparecnt];
1286 ev_stop (EV_A_ (W)w);
1287}
1288
1289void
1290ev_check_start (EV_P_ struct ev_check *w)
1291{
1292 if (ev_is_active (w))
1293 return;
1294
1295 ev_start (EV_A_ (W)w, ++checkcnt);
1296 array_needsize (checks, checkmax, checkcnt, );
1297 checks [checkcnt - 1] = w;
1298}
1299
1300void
1301ev_check_stop (EV_P_ struct ev_check *w)
1302{
1303 ev_clear_pending (EV_A_ (W)w);
1304 if (ev_is_active (w))
1305 return;
1306
1307 checks [((W)w)->active - 1] = checks [--checkcnt];
1308 ev_stop (EV_A_ (W)w);
1309}
1310 1732
1311#ifndef SA_RESTART 1733#ifndef SA_RESTART
1312# define SA_RESTART 0 1734# define SA_RESTART 0
1313#endif 1735#endif
1314 1736
1315void 1737void noinline
1316ev_signal_start (EV_P_ struct ev_signal *w) 1738ev_signal_start (EV_P_ ev_signal *w)
1317{ 1739{
1318#if EV_MULTIPLICITY 1740#if EV_MULTIPLICITY
1319 assert (("signal watchers are only supported in the default loop", loop == default_loop)); 1741 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1320#endif 1742#endif
1321 if (ev_is_active (w)) 1743 if (expect_false (ev_is_active (w)))
1322 return; 1744 return;
1323 1745
1324 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 1746 assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1325 1747
1326 ev_start (EV_A_ (W)w, 1); 1748 ev_start (EV_A_ (W)w, 1);
1327 array_needsize (signals, signalmax, w->signum, signals_init); 1749 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1328 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); 1750 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1329 1751
1330 if (!((WL)w)->next) 1752 if (!((WL)w)->next)
1331 { 1753 {
1332#if WIN32 1754#if _WIN32
1333 signal (w->signum, sighandler); 1755 signal (w->signum, sighandler);
1334#else 1756#else
1335 struct sigaction sa; 1757 struct sigaction sa;
1336 sa.sa_handler = sighandler; 1758 sa.sa_handler = sighandler;
1337 sigfillset (&sa.sa_mask); 1759 sigfillset (&sa.sa_mask);
… …
1339 sigaction (w->signum, &sa, 0); 1761 sigaction (w->signum, &sa, 0);
1340#endif 1762#endif
1341 } 1763 }
1342} 1764}
1343 1765
1344void 1766void noinline
1345ev_signal_stop (EV_P_ struct ev_signal *w) 1767ev_signal_stop (EV_P_ ev_signal *w)
1346{ 1768{
1347 ev_clear_pending (EV_A_ (W)w); 1769 clear_pending (EV_A_ (W)w);
1348 if (!ev_is_active (w)) 1770 if (expect_false (!ev_is_active (w)))
1349 return; 1771 return;
1350 1772
1351 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); 1773 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1352 ev_stop (EV_A_ (W)w); 1774 ev_stop (EV_A_ (W)w);
1353 1775
1354 if (!signals [w->signum - 1].head) 1776 if (!signals [w->signum - 1].head)
1355 signal (w->signum, SIG_DFL); 1777 signal (w->signum, SIG_DFL);
1356} 1778}
1357 1779
1358void 1780void
1359ev_child_start (EV_P_ struct ev_child *w) 1781ev_child_start (EV_P_ ev_child *w)
1360{ 1782{
1361#if EV_MULTIPLICITY 1783#if EV_MULTIPLICITY
1362 assert (("child watchers are only supported in the default loop", loop == default_loop)); 1784 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1363#endif 1785#endif
1364 if (ev_is_active (w)) 1786 if (expect_false (ev_is_active (w)))
1365 return; 1787 return;
1366 1788
1367 ev_start (EV_A_ (W)w, 1); 1789 ev_start (EV_A_ (W)w, 1);
1368 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1790 wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1369} 1791}
1370 1792
1371void 1793void
1372ev_child_stop (EV_P_ struct ev_child *w) 1794ev_child_stop (EV_P_ ev_child *w)
1373{ 1795{
1374 ev_clear_pending (EV_A_ (W)w); 1796 clear_pending (EV_A_ (W)w);
1375 if (ev_is_active (w)) 1797 if (expect_false (!ev_is_active (w)))
1376 return; 1798 return;
1377 1799
1378 wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1800 wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1379 ev_stop (EV_A_ (W)w); 1801 ev_stop (EV_A_ (W)w);
1380} 1802}
1381 1803
1804#if EV_STAT_ENABLE
1805
1806# ifdef _WIN32
1807# undef lstat
1808# define lstat(a,b) _stati64 (a,b)
1809# endif
1810
1811#define DEF_STAT_INTERVAL 5.0074891
1812#define MIN_STAT_INTERVAL 0.1074891
1813
1814static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
1815
1816#if EV_USE_INOTIFY
1817# define EV_INOTIFY_BUFSIZE 8192
1818
1819static void noinline
1820infy_add (EV_P_ ev_stat *w)
1821{
1822 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);
1823
1824 if (w->wd < 0)
1825 {
1826 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
1827
1828 /* monitor some parent directory for speedup hints */
1829 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
1830 {
1831 char path [4096];
1832 strcpy (path, w->path);
1833
1834 do
1835 {
1836 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
1837 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
1838
1839 char *pend = strrchr (path, '/');
1840
1841 if (!pend)
1842 break; /* whoops, no '/', complain to your admin */
1843
1844 *pend = 0;
1845 w->wd = inotify_add_watch (fs_fd, path, mask);
1846 }
1847 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
1848 }
1849 }
1850 else
1851 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
1852
1853 if (w->wd >= 0)
1854 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
1855}
1856
1857static void noinline
1858infy_del (EV_P_ ev_stat *w)
1859{
1860 int slot;
1861 int wd = w->wd;
1862
1863 if (wd < 0)
1864 return;
1865
1866 w->wd = -2;
1867 slot = wd & (EV_INOTIFY_HASHSIZE - 1);
1868 wlist_del (&fs_hash [slot].head, (WL)w);
1869
1870 /* remove this watcher, if others are watching it, they will rearm */
1871 inotify_rm_watch (fs_fd, wd);
1872}
1873
1874static void noinline
1875infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
1876{
1877 if (slot < 0)
1878 /* overflow, need to check for all hahs slots */
1879 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
1880 infy_wd (EV_A_ slot, wd, ev);
1881 else
1882 {
1883 WL w_;
1884
1885 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
1886 {
1887 ev_stat *w = (ev_stat *)w_;
1888 w_ = w_->next; /* lets us remove this watcher and all before it */
1889
1890 if (w->wd == wd || wd == -1)
1891 {
1892 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
1893 {
1894 w->wd = -1;
1895 infy_add (EV_A_ w); /* re-add, no matter what */
1896 }
1897
1898 stat_timer_cb (EV_A_ &w->timer, 0);
1899 }
1900 }
1901 }
1902}
1903
1904static void
1905infy_cb (EV_P_ ev_io *w, int revents)
1906{
1907 char buf [EV_INOTIFY_BUFSIZE];
1908 struct inotify_event *ev = (struct inotify_event *)buf;
1909 int ofs;
1910 int len = read (fs_fd, buf, sizeof (buf));
1911
1912 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
1913 infy_wd (EV_A_ ev->wd, ev->wd, ev);
1914}
1915
1916void inline_size
1917infy_init (EV_P)
1918{
1919 if (fs_fd != -2)
1920 return;
1921
1922 fs_fd = inotify_init ();
1923
1924 if (fs_fd >= 0)
1925 {
1926 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
1927 ev_set_priority (&fs_w, EV_MAXPRI);
1928 ev_io_start (EV_A_ &fs_w);
1929 }
1930}
1931
1932void inline_size
1933infy_fork (EV_P)
1934{
1935 int slot;
1936
1937 if (fs_fd < 0)
1938 return;
1939
1940 close (fs_fd);
1941 fs_fd = inotify_init ();
1942
1943 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
1944 {
1945 WL w_ = fs_hash [slot].head;
1946 fs_hash [slot].head = 0;
1947
1948 while (w_)
1949 {
1950 ev_stat *w = (ev_stat *)w_;
1951 w_ = w_->next; /* lets us add this watcher */
1952
1953 w->wd = -1;
1954
1955 if (fs_fd >= 0)
1956 infy_add (EV_A_ w); /* re-add, no matter what */
1957 else
1958 ev_timer_start (EV_A_ &w->timer);
1959 }
1960
1961 }
1962}
1963
1964#endif
1965
1966void
1967ev_stat_stat (EV_P_ ev_stat *w)
1968{
1969 if (lstat (w->path, &w->attr) < 0)
1970 w->attr.st_nlink = 0;
1971 else if (!w->attr.st_nlink)
1972 w->attr.st_nlink = 1;
1973}
1974
1975static void noinline
1976stat_timer_cb (EV_P_ ev_timer *w_, int revents)
1977{
1978 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
1979
1980 /* we copy this here each the time so that */
1981 /* prev has the old value when the callback gets invoked */
1982 w->prev = w->attr;
1983 ev_stat_stat (EV_A_ w);
1984
1985 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
1986 if (
1987 w->prev.st_dev != w->attr.st_dev
1988 || w->prev.st_ino != w->attr.st_ino
1989 || w->prev.st_mode != w->attr.st_mode
1990 || w->prev.st_nlink != w->attr.st_nlink
1991 || w->prev.st_uid != w->attr.st_uid
1992 || w->prev.st_gid != w->attr.st_gid
1993 || w->prev.st_rdev != w->attr.st_rdev
1994 || w->prev.st_size != w->attr.st_size
1995 || w->prev.st_atime != w->attr.st_atime
1996 || w->prev.st_mtime != w->attr.st_mtime
1997 || w->prev.st_ctime != w->attr.st_ctime
1998 ) {
1999 #if EV_USE_INOTIFY
2000 infy_del (EV_A_ w);
2001 infy_add (EV_A_ w);
2002 ev_stat_stat (EV_A_ w); /* avoid race... */
2003 #endif
2004
2005 ev_feed_event (EV_A_ w, EV_STAT);
2006 }
2007}
2008
2009void
2010ev_stat_start (EV_P_ ev_stat *w)
2011{
2012 if (expect_false (ev_is_active (w)))
2013 return;
2014
2015 /* since we use memcmp, we need to clear any padding data etc. */
2016 memset (&w->prev, 0, sizeof (ev_statdata));
2017 memset (&w->attr, 0, sizeof (ev_statdata));
2018
2019 ev_stat_stat (EV_A_ w);
2020
2021 if (w->interval < MIN_STAT_INTERVAL)
2022 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2023
2024 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
2025 ev_set_priority (&w->timer, ev_priority (w));
2026
2027#if EV_USE_INOTIFY
2028 infy_init (EV_A);
2029
2030 if (fs_fd >= 0)
2031 infy_add (EV_A_ w);
2032 else
2033#endif
2034 ev_timer_start (EV_A_ &w->timer);
2035
2036 ev_start (EV_A_ (W)w, 1);
2037}
2038
2039void
2040ev_stat_stop (EV_P_ ev_stat *w)
2041{
2042 clear_pending (EV_A_ (W)w);
2043 if (expect_false (!ev_is_active (w)))
2044 return;
2045
2046#if EV_USE_INOTIFY
2047 infy_del (EV_A_ w);
2048#endif
2049 ev_timer_stop (EV_A_ &w->timer);
2050
2051 ev_stop (EV_A_ (W)w);
2052}
2053#endif
2054
2055#if EV_IDLE_ENABLE
2056void
2057ev_idle_start (EV_P_ ev_idle *w)
2058{
2059 if (expect_false (ev_is_active (w)))
2060 return;
2061
2062 pri_adjust (EV_A_ (W)w);
2063
2064 {
2065 int active = ++idlecnt [ABSPRI (w)];
2066
2067 ++idleall;
2068 ev_start (EV_A_ (W)w, active);
2069
2070 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2071 idles [ABSPRI (w)][active - 1] = w;
2072 }
2073}
2074
2075void
2076ev_idle_stop (EV_P_ ev_idle *w)
2077{
2078 clear_pending (EV_A_ (W)w);
2079 if (expect_false (!ev_is_active (w)))
2080 return;
2081
2082 {
2083 int active = ((W)w)->active;
2084
2085 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2086 ((W)idles [ABSPRI (w)][active - 1])->active = active;
2087
2088 ev_stop (EV_A_ (W)w);
2089 --idleall;
2090 }
2091}
2092#endif
2093
2094void
2095ev_prepare_start (EV_P_ ev_prepare *w)
2096{
2097 if (expect_false (ev_is_active (w)))
2098 return;
2099
2100 ev_start (EV_A_ (W)w, ++preparecnt);
2101 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2102 prepares [preparecnt - 1] = w;
2103}
2104
2105void
2106ev_prepare_stop (EV_P_ ev_prepare *w)
2107{
2108 clear_pending (EV_A_ (W)w);
2109 if (expect_false (!ev_is_active (w)))
2110 return;
2111
2112 {
2113 int active = ((W)w)->active;
2114 prepares [active - 1] = prepares [--preparecnt];
2115 ((W)prepares [active - 1])->active = active;
2116 }
2117
2118 ev_stop (EV_A_ (W)w);
2119}
2120
2121void
2122ev_check_start (EV_P_ ev_check *w)
2123{
2124 if (expect_false (ev_is_active (w)))
2125 return;
2126
2127 ev_start (EV_A_ (W)w, ++checkcnt);
2128 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2129 checks [checkcnt - 1] = w;
2130}
2131
2132void
2133ev_check_stop (EV_P_ ev_check *w)
2134{
2135 clear_pending (EV_A_ (W)w);
2136 if (expect_false (!ev_is_active (w)))
2137 return;
2138
2139 {
2140 int active = ((W)w)->active;
2141 checks [active - 1] = checks [--checkcnt];
2142 ((W)checks [active - 1])->active = active;
2143 }
2144
2145 ev_stop (EV_A_ (W)w);
2146}
2147
2148#if EV_EMBED_ENABLE
2149void noinline
2150ev_embed_sweep (EV_P_ ev_embed *w)
2151{
2152 ev_loop (w->loop, EVLOOP_NONBLOCK);
2153}
2154
2155static void
2156embed_cb (EV_P_ ev_io *io, int revents)
2157{
2158 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2159
2160 if (ev_cb (w))
2161 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2162 else
2163 ev_embed_sweep (loop, w);
2164}
2165
2166void
2167ev_embed_start (EV_P_ ev_embed *w)
2168{
2169 if (expect_false (ev_is_active (w)))
2170 return;
2171
2172 {
2173 struct ev_loop *loop = w->loop;
2174 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2175 ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
2176 }
2177
2178 ev_set_priority (&w->io, ev_priority (w));
2179 ev_io_start (EV_A_ &w->io);
2180
2181 ev_start (EV_A_ (W)w, 1);
2182}
2183
2184void
2185ev_embed_stop (EV_P_ ev_embed *w)
2186{
2187 clear_pending (EV_A_ (W)w);
2188 if (expect_false (!ev_is_active (w)))
2189 return;
2190
2191 ev_io_stop (EV_A_ &w->io);
2192
2193 ev_stop (EV_A_ (W)w);
2194}
2195#endif
2196
2197#if EV_FORK_ENABLE
2198void
2199ev_fork_start (EV_P_ ev_fork *w)
2200{
2201 if (expect_false (ev_is_active (w)))
2202 return;
2203
2204 ev_start (EV_A_ (W)w, ++forkcnt);
2205 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2206 forks [forkcnt - 1] = w;
2207}
2208
2209void
2210ev_fork_stop (EV_P_ ev_fork *w)
2211{
2212 clear_pending (EV_A_ (W)w);
2213 if (expect_false (!ev_is_active (w)))
2214 return;
2215
2216 {
2217 int active = ((W)w)->active;
2218 forks [active - 1] = forks [--forkcnt];
2219 ((W)forks [active - 1])->active = active;
2220 }
2221
2222 ev_stop (EV_A_ (W)w);
2223}
2224#endif
2225
1382/*****************************************************************************/ 2226/*****************************************************************************/
1383 2227
1384struct ev_once 2228struct ev_once
1385{ 2229{
1386 struct ev_io io; 2230 ev_io io;
1387 struct ev_timer to; 2231 ev_timer to;
1388 void (*cb)(int revents, void *arg); 2232 void (*cb)(int revents, void *arg);
1389 void *arg; 2233 void *arg;
1390}; 2234};
1391 2235
1392static void 2236static void
… …
1395 void (*cb)(int revents, void *arg) = once->cb; 2239 void (*cb)(int revents, void *arg) = once->cb;
1396 void *arg = once->arg; 2240 void *arg = once->arg;
1397 2241
1398 ev_io_stop (EV_A_ &once->io); 2242 ev_io_stop (EV_A_ &once->io);
1399 ev_timer_stop (EV_A_ &once->to); 2243 ev_timer_stop (EV_A_ &once->to);
1400 free (once); 2244 ev_free (once);
1401 2245
1402 cb (revents, arg); 2246 cb (revents, arg);
1403} 2247}
1404 2248
1405static void 2249static void
1406once_cb_io (EV_P_ struct ev_io *w, int revents) 2250once_cb_io (EV_P_ ev_io *w, int revents)
1407{ 2251{
1408 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 2252 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1409} 2253}
1410 2254
1411static void 2255static void
1412once_cb_to (EV_P_ struct ev_timer *w, int revents) 2256once_cb_to (EV_P_ ev_timer *w, int revents)
1413{ 2257{
1414 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 2258 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1415} 2259}
1416 2260
1417void 2261void
1418ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 2262ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1419{ 2263{
1420 struct ev_once *once = malloc (sizeof (struct ev_once)); 2264 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1421 2265
1422 if (!once) 2266 if (expect_false (!once))
2267 {
1423 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 2268 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1424 else 2269 return;
1425 { 2270 }
2271
1426 once->cb = cb; 2272 once->cb = cb;
1427 once->arg = arg; 2273 once->arg = arg;
1428 2274
1429 ev_watcher_init (&once->io, once_cb_io); 2275 ev_init (&once->io, once_cb_io);
1430 if (fd >= 0) 2276 if (fd >= 0)
1431 { 2277 {
1432 ev_io_set (&once->io, fd, events); 2278 ev_io_set (&once->io, fd, events);
1433 ev_io_start (EV_A_ &once->io); 2279 ev_io_start (EV_A_ &once->io);
1434 } 2280 }
1435 2281
1436 ev_watcher_init (&once->to, once_cb_to); 2282 ev_init (&once->to, once_cb_to);
1437 if (timeout >= 0.) 2283 if (timeout >= 0.)
1438 { 2284 {
1439 ev_timer_set (&once->to, timeout, 0.); 2285 ev_timer_set (&once->to, timeout, 0.);
1440 ev_timer_start (EV_A_ &once->to); 2286 ev_timer_start (EV_A_ &once->to);
1441 }
1442 } 2287 }
1443} 2288}
1444 2289
2290#ifdef __cplusplus
2291}
2292#endif
2293

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