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Comparing libev/ev.c (file contents):
Revision 1.67 by root, Mon Nov 5 16:42:15 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
155 271
156/*****************************************************************************/ 272/*****************************************************************************/
157 273
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)
321
322/*****************************************************************************/
323
158typedef struct 324typedef struct
159{ 325{
160 struct ev_watcher_list *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--; )
379 if (anfds [fd].events) 615 if (anfds [fd].events)
380 { 616 {
381 close (fd);
382 fd_kill (EV_A_ fd); 617 fd_kill (EV_A_ fd);
383 return; 618 return;
384 } 619 }
385} 620}
386 621
387/* 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 */
388static void 623static void noinline
389fd_rearm_all (EV_P) 624fd_rearm_all (EV_P)
390{ 625{
391 int fd; 626 int fd;
392 627
393 /* this should be highly optimised to not do anything but set a flag */
394 for (fd = 0; fd < anfdmax; ++fd) 628 for (fd = 0; fd < anfdmax; ++fd)
395 if (anfds [fd].events) 629 if (anfds [fd].events)
396 { 630 {
397 anfds [fd].events = 0; 631 anfds [fd].events = 0;
398 fd_change (EV_A_ fd); 632 fd_change (EV_A_ fd);
399 } 633 }
400} 634}
401 635
402/*****************************************************************************/ 636/*****************************************************************************/
403 637
404static void 638void inline_speed
405upheap (WT *heap, int k) 639upheap (WT *heap, int k)
406{ 640{
407 WT w = heap [k]; 641 WT w = heap [k];
408 642
409 while (k && heap [k >> 1]->at > w->at) 643 while (k && heap [k >> 1]->at > w->at)
… …
416 heap [k] = w; 650 heap [k] = w;
417 ((W)heap [k])->active = k + 1; 651 ((W)heap [k])->active = k + 1;
418 652
419} 653}
420 654
421static void 655void inline_speed
422downheap (WT *heap, int N, int k) 656downheap (WT *heap, int N, int k)
423{ 657{
424 WT w = heap [k]; 658 WT w = heap [k];
425 659
426 while (k < (N >> 1)) 660 while (k < (N >> 1))
… …
440 674
441 heap [k] = w; 675 heap [k] = w;
442 ((W)heap [k])->active = k + 1; 676 ((W)heap [k])->active = k + 1;
443} 677}
444 678
679void inline_size
680adjustheap (WT *heap, int N, int k)
681{
682 upheap (heap, k);
683 downheap (heap, N, k);
684}
685
445/*****************************************************************************/ 686/*****************************************************************************/
446 687
447typedef struct 688typedef struct
448{ 689{
449 struct ev_watcher_list *head; 690 WL head;
450 sig_atomic_t volatile gotsig; 691 sig_atomic_t volatile gotsig;
451} ANSIG; 692} ANSIG;
452 693
453static ANSIG *signals; 694static ANSIG *signals;
454static int signalmax; 695static int signalmax;
455 696
456static int sigpipe [2]; 697static int sigpipe [2];
457static sig_atomic_t volatile gotsig; 698static sig_atomic_t volatile gotsig;
458static struct ev_io sigev; 699static ev_io sigev;
459 700
460static void 701void inline_size
461signals_init (ANSIG *base, int count) 702signals_init (ANSIG *base, int count)
462{ 703{
463 while (count--) 704 while (count--)
464 { 705 {
465 base->head = 0; 706 base->head = 0;
… …
470} 711}
471 712
472static void 713static void
473sighandler (int signum) 714sighandler (int signum)
474{ 715{
475#if WIN32 716#if _WIN32
476 signal (signum, sighandler); 717 signal (signum, sighandler);
477#endif 718#endif
478 719
479 signals [signum - 1].gotsig = 1; 720 signals [signum - 1].gotsig = 1;
480 721
… …
485 write (sigpipe [1], &signum, 1); 726 write (sigpipe [1], &signum, 1);
486 errno = old_errno; 727 errno = old_errno;
487 } 728 }
488} 729}
489 730
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
490static void 751static void
491sigcb (EV_P_ struct ev_io *iow, int revents) 752sigcb (EV_P_ ev_io *iow, int revents)
492{ 753{
493 struct ev_watcher_list *w;
494 int signum; 754 int signum;
495 755
496 read (sigpipe [0], &revents, 1); 756 read (sigpipe [0], &revents, 1);
497 gotsig = 0; 757 gotsig = 0;
498 758
499 for (signum = signalmax; signum--; ) 759 for (signum = signalmax; signum--; )
500 if (signals [signum].gotsig) 760 if (signals [signum].gotsig)
501 { 761 ev_feed_signal_event (EV_A_ signum + 1);
502 signals [signum].gotsig = 0;
503
504 for (w = signals [signum].head; w; w = w->next)
505 event (EV_A_ (W)w, EV_SIGNAL);
506 }
507} 762}
508 763
509static 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
510siginit (EV_P) 777siginit (EV_P)
511{ 778{
512#ifndef WIN32 779 fd_intern (sigpipe [0]);
513 fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC); 780 fd_intern (sigpipe [1]);
514 fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
515
516 /* rather than sort out wether we really need nb, set it */
517 fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
518 fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
519#endif
520 781
521 ev_io_set (&sigev, sigpipe [0], EV_READ); 782 ev_io_set (&sigev, sigpipe [0], EV_READ);
522 ev_io_start (EV_A_ &sigev); 783 ev_io_start (EV_A_ &sigev);
523 ev_unref (EV_A); /* child watcher should not keep loop alive */ 784 ev_unref (EV_A); /* child watcher should not keep loop alive */
524} 785}
525 786
526/*****************************************************************************/ 787/*****************************************************************************/
527 788
789static ev_child *childs [EV_PID_HASHSIZE];
790
528#ifndef WIN32 791#ifndef _WIN32
529 792
530static struct ev_child *childs [PID_HASHSIZE];
531static 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}
532 809
533#ifndef WCONTINUED 810#ifndef WCONTINUED
534# define WCONTINUED 0 811# define WCONTINUED 0
535#endif 812#endif
536 813
537static void 814static void
538child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
539{
540 struct ev_child *w;
541
542 for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
543 if (w->pid == pid || !w->pid)
544 {
545 ev_priority (w) = ev_priority (sw); /* need to do it *now* */
546 w->rpid = pid;
547 w->rstatus = status;
548 event (EV_A_ (W)w, EV_CHILD);
549 }
550}
551
552static void
553childcb (EV_P_ struct ev_signal *sw, int revents) 815childcb (EV_P_ ev_signal *sw, int revents)
554{ 816{
555 int pid, status; 817 int pid, status;
556 818
819 /* some systems define WCONTINUED but then fail to support it (linux 2.4) */
557 if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) 820 if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
558 { 821 if (!WCONTINUED
822 || errno != EINVAL
823 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
824 return;
825
559 /* 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 */
560 event (EV_A_ (W)sw, EV_SIGNAL); 828 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
561 829
562 child_reap (EV_A_ sw, pid, pid, status); 830 child_reap (EV_A_ sw, pid, pid, status);
831 if (EV_PID_HASHSIZE > 1)
563 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 */
564 }
565} 833}
566 834
567#endif 835#endif
568 836
569/*****************************************************************************/ 837/*****************************************************************************/
570 838
839#if EV_USE_PORT
840# include "ev_port.c"
841#endif
571#if EV_USE_KQUEUE 842#if EV_USE_KQUEUE
572# include "ev_kqueue.c" 843# include "ev_kqueue.c"
573#endif 844#endif
574#if EV_USE_EPOLL 845#if EV_USE_EPOLL
575# include "ev_epoll.c" 846# include "ev_epoll.c"
… …
592{ 863{
593 return EV_VERSION_MINOR; 864 return EV_VERSION_MINOR;
594} 865}
595 866
596/* 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 */
597static int 868int inline_size
598enable_secure (void) 869enable_secure (void)
599{ 870{
600#ifdef WIN32 871#ifdef _WIN32
601 return 0; 872 return 0;
602#else 873#else
603 return getuid () != geteuid () 874 return getuid () != geteuid ()
604 || getgid () != getegid (); 875 || getgid () != getegid ();
605#endif 876#endif
606} 877}
607 878
608int 879unsigned int
609ev_method (EV_P) 880ev_supported_backends (void)
610{ 881{
611 return method; 882 unsigned int flags = 0;
612}
613 883
614static void 884 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
615loop_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)
616{ 895{
617 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)
618 { 935 {
619#if EV_USE_MONOTONIC 936#if EV_USE_MONOTONIC
620 { 937 {
621 struct timespec ts; 938 struct timespec ts;
622 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 939 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
623 have_monotonic = 1; 940 have_monotonic = 1;
624 } 941 }
625#endif 942#endif
626 943
627 rt_now = ev_time (); 944 ev_rt_now = ev_time ();
628 mn_now = get_clock (); 945 mn_now = get_clock ();
629 now_floor = mn_now; 946 now_floor = mn_now;
630 rtmn_diff = rt_now - mn_now; 947 rtmn_diff = ev_rt_now - mn_now;
631 948
632 if (methods == EVMETHOD_AUTO) 949 /* pid check not overridable via env */
633 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"))
634 methods = atoi (getenv ("LIBEV_METHODS")); 958 flags = atoi (getenv ("LIBEV_FLAGS"));
635 else
636 methods = EVMETHOD_ANY;
637 959
638 method = 0; 960 if (!(flags & 0x0000ffffUL))
961 flags |= ev_recommended_backends ();
962
963 backend = 0;
964 backend_fd = -1;
639#if EV_USE_WIN32 965#if EV_USE_INOTIFY
640 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);
641#endif 971#endif
642#if EV_USE_KQUEUE 972#if EV_USE_KQUEUE
643 if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods); 973 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
644#endif 974#endif
645#if EV_USE_EPOLL 975#if EV_USE_EPOLL
646 if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods); 976 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
647#endif 977#endif
648#if EV_USE_POLL 978#if EV_USE_POLL
649 if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods); 979 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
650#endif 980#endif
651#if EV_USE_SELECT 981#if EV_USE_SELECT
652 if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods); 982 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
653#endif 983#endif
654 }
655}
656 984
657void 985 ev_init (&sigev, sigcb);
986 ev_set_priority (&sigev, EV_MAXPRI);
987 }
988}
989
990static void noinline
658loop_destroy (EV_P) 991loop_destroy (EV_P)
659{ 992{
660 int i; 993 int i;
661 994
662#if EV_USE_WIN32 995#if EV_USE_INOTIFY
663 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);
664#endif 1005#endif
665#if EV_USE_KQUEUE 1006#if EV_USE_KQUEUE
666 if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A); 1007 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
667#endif 1008#endif
668#if EV_USE_EPOLL 1009#if EV_USE_EPOLL
669 if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A); 1010 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
670#endif 1011#endif
671#if EV_USE_POLL 1012#if EV_USE_POLL
672 if (method == EVMETHOD_POLL ) poll_destroy (EV_A); 1013 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
673#endif 1014#endif
674#if EV_USE_SELECT 1015#if EV_USE_SELECT
675 if (method == EVMETHOD_SELECT) select_destroy (EV_A); 1016 if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
676#endif 1017#endif
677 1018
678 for (i = NUMPRI; i--; ) 1019 for (i = NUMPRI; i--; )
1020 {
679 array_free (pending, [i]); 1021 array_free (pending, [i]);
1022#if EV_IDLE_ENABLE
1023 array_free (idle, [i]);
1024#endif
1025 }
680 1026
1027 /* have to use the microsoft-never-gets-it-right macro */
681 array_free (fdchange, ); 1028 array_free (fdchange, EMPTY);
682 array_free (timer, ); 1029 array_free (timer, EMPTY);
1030#if EV_PERIODIC_ENABLE
683 array_free (periodic, ); 1031 array_free (periodic, EMPTY);
684 array_free (idle, ); 1032#endif
685 array_free (prepare, ); 1033 array_free (prepare, EMPTY);
686 array_free (check, ); 1034 array_free (check, EMPTY);
687 1035
688 method = 0; 1036 backend = 0;
689 /*TODO*/
690} 1037}
691 1038
692void 1039void inline_size infy_fork (EV_P);
1040
1041void inline_size
693loop_fork (EV_P) 1042loop_fork (EV_P)
694{ 1043{
695 /*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
696#if EV_USE_EPOLL 1050#if EV_USE_EPOLL
697 if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A); 1051 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
698#endif 1052#endif
699#if EV_USE_KQUEUE 1053#if EV_USE_INOTIFY
700 if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A); 1054 infy_fork (EV_A);
701#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;
702} 1073}
703 1074
704#if EV_MULTIPLICITY 1075#if EV_MULTIPLICITY
705struct ev_loop * 1076struct ev_loop *
706ev_loop_new (int methods) 1077ev_loop_new (unsigned int flags)
707{ 1078{
708 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));
709 1080
1081 memset (loop, 0, sizeof (struct ev_loop));
1082
710 loop_init (EV_A_ methods); 1083 loop_init (EV_A_ flags);
711 1084
712 if (ev_method (EV_A)) 1085 if (ev_backend (EV_A))
713 return loop; 1086 return loop;
714 1087
715 return 0; 1088 return 0;
716} 1089}
717 1090
718void 1091void
719ev_loop_destroy (EV_P) 1092ev_loop_destroy (EV_P)
720{ 1093{
721 loop_destroy (EV_A); 1094 loop_destroy (EV_A);
722 free (loop); 1095 ev_free (loop);
723} 1096}
724 1097
725void 1098void
726ev_loop_fork (EV_P) 1099ev_loop_fork (EV_P)
727{ 1100{
728 loop_fork (EV_A); 1101 postfork = 1;
729} 1102}
730 1103
731#endif 1104#endif
732 1105
733#if EV_MULTIPLICITY 1106#if EV_MULTIPLICITY
734struct ev_loop default_loop_struct;
735static struct ev_loop *default_loop;
736
737struct ev_loop * 1107struct ev_loop *
1108ev_default_loop_init (unsigned int flags)
738#else 1109#else
739static int default_loop;
740
741int 1110int
1111ev_default_loop (unsigned int flags)
742#endif 1112#endif
743ev_default_loop (int methods)
744{ 1113{
745 if (sigpipe [0] == sigpipe [1]) 1114 if (sigpipe [0] == sigpipe [1])
746 if (pipe (sigpipe)) 1115 if (pipe (sigpipe))
747 return 0; 1116 return 0;
748 1117
749 if (!default_loop) 1118 if (!ev_default_loop_ptr)
750 { 1119 {
751#if EV_MULTIPLICITY 1120#if EV_MULTIPLICITY
752 struct ev_loop *loop = default_loop = &default_loop_struct; 1121 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
753#else 1122#else
754 default_loop = 1; 1123 ev_default_loop_ptr = 1;
755#endif 1124#endif
756 1125
757 loop_init (EV_A_ methods); 1126 loop_init (EV_A_ flags);
758 1127
759 if (ev_method (EV_A)) 1128 if (ev_backend (EV_A))
760 { 1129 {
761 ev_watcher_init (&sigev, sigcb);
762 ev_set_priority (&sigev, EV_MAXPRI);
763 siginit (EV_A); 1130 siginit (EV_A);
764 1131
765#ifndef WIN32 1132#ifndef _WIN32
766 ev_signal_init (&childev, childcb, SIGCHLD); 1133 ev_signal_init (&childev, childcb, SIGCHLD);
767 ev_set_priority (&childev, EV_MAXPRI); 1134 ev_set_priority (&childev, EV_MAXPRI);
768 ev_signal_start (EV_A_ &childev); 1135 ev_signal_start (EV_A_ &childev);
769 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1136 ev_unref (EV_A); /* child watcher should not keep loop alive */
770#endif 1137#endif
771 } 1138 }
772 else 1139 else
773 default_loop = 0; 1140 ev_default_loop_ptr = 0;
774 } 1141 }
775 1142
776 return default_loop; 1143 return ev_default_loop_ptr;
777} 1144}
778 1145
779void 1146void
780ev_default_destroy (void) 1147ev_default_destroy (void)
781{ 1148{
782#if EV_MULTIPLICITY 1149#if EV_MULTIPLICITY
783 struct ev_loop *loop = default_loop; 1150 struct ev_loop *loop = ev_default_loop_ptr;
784#endif 1151#endif
785 1152
1153#ifndef _WIN32
786 ev_ref (EV_A); /* child watcher */ 1154 ev_ref (EV_A); /* child watcher */
787 ev_signal_stop (EV_A_ &childev); 1155 ev_signal_stop (EV_A_ &childev);
1156#endif
788 1157
789 ev_ref (EV_A); /* signal watcher */ 1158 ev_ref (EV_A); /* signal watcher */
790 ev_io_stop (EV_A_ &sigev); 1159 ev_io_stop (EV_A_ &sigev);
791 1160
792 close (sigpipe [0]); sigpipe [0] = 0; 1161 close (sigpipe [0]); sigpipe [0] = 0;
… …
797 1166
798void 1167void
799ev_default_fork (void) 1168ev_default_fork (void)
800{ 1169{
801#if EV_MULTIPLICITY 1170#if EV_MULTIPLICITY
802 struct ev_loop *loop = default_loop; 1171 struct ev_loop *loop = ev_default_loop_ptr;
803#endif 1172#endif
804 1173
805 loop_fork (EV_A); 1174 if (backend)
806 1175 postfork = 1;
807 ev_io_stop (EV_A_ &sigev);
808 close (sigpipe [0]);
809 close (sigpipe [1]);
810 pipe (sigpipe);
811
812 ev_ref (EV_A); /* signal watcher */
813 siginit (EV_A);
814} 1176}
815 1177
816/*****************************************************************************/ 1178/*****************************************************************************/
817 1179
818static void 1180void
1181ev_invoke (EV_P_ void *w, int revents)
1182{
1183 EV_CB_INVOKE ((W)w, revents);
1184}
1185
1186void inline_speed
819call_pending (EV_P) 1187call_pending (EV_P)
820{ 1188{
821 int pri; 1189 int pri;
822 1190
823 for (pri = NUMPRI; pri--; ) 1191 for (pri = NUMPRI; pri--; )
824 while (pendingcnt [pri]) 1192 while (pendingcnt [pri])
825 { 1193 {
826 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 1194 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
827 1195
828 if (p->w) 1196 if (expect_true (p->w))
829 { 1197 {
1198 /*assert (("non-pending watcher on pending list", p->w->pending));*/
1199
830 p->w->pending = 0; 1200 p->w->pending = 0;
831 p->w->cb (EV_A_ p->w, p->events); 1201 EV_CB_INVOKE (p->w, p->events);
832 } 1202 }
833 } 1203 }
834} 1204}
835 1205
836static void 1206void inline_size
837timers_reify (EV_P) 1207timers_reify (EV_P)
838{ 1208{
839 while (timercnt && ((WT)timers [0])->at <= mn_now) 1209 while (timercnt && ((WT)timers [0])->at <= mn_now)
840 { 1210 {
841 struct ev_timer *w = timers [0]; 1211 ev_timer *w = timers [0];
842 1212
843 assert (("inactive timer on timer heap detected", ev_is_active (w))); 1213 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
844 1214
845 /* first reschedule or stop timer */ 1215 /* first reschedule or stop timer */
846 if (w->repeat) 1216 if (w->repeat)
847 { 1217 {
848 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
849 ((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
850 downheap ((WT *)timers, timercnt, 0); 1224 downheap ((WT *)timers, timercnt, 0);
851 } 1225 }
852 else 1226 else
853 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ 1227 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
854 1228
855 event (EV_A_ (W)w, EV_TIMEOUT); 1229 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
856 } 1230 }
857} 1231}
858 1232
859static void 1233#if EV_PERIODIC_ENABLE
1234void inline_size
860periodics_reify (EV_P) 1235periodics_reify (EV_P)
861{ 1236{
862 while (periodiccnt && ((WT)periodics [0])->at <= rt_now) 1237 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
863 { 1238 {
864 struct ev_periodic *w = periodics [0]; 1239 ev_periodic *w = periodics [0];
865 1240
866 assert (("inactive timer on periodic heap detected", ev_is_active (w))); 1241 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
867 1242
868 /* first reschedule or stop timer */ 1243 /* first reschedule or stop timer */
869 if (w->interval) 1244 if (w->reschedule_cb)
870 { 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 {
871 ((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;
872 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));
873 downheap ((WT *)periodics, periodiccnt, 0); 1255 downheap ((WT *)periodics, periodiccnt, 0);
874 } 1256 }
875 else 1257 else
876 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 1258 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
877 1259
878 event (EV_A_ (W)w, EV_PERIODIC); 1260 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
879 } 1261 }
880} 1262}
881 1263
882static void 1264static void noinline
883periodics_reschedule (EV_P) 1265periodics_reschedule (EV_P)
884{ 1266{
885 int i; 1267 int i;
886 1268
887 /* adjust periodics after time jump */ 1269 /* adjust periodics after time jump */
888 for (i = 0; i < periodiccnt; ++i) 1270 for (i = 0; i < periodiccnt; ++i)
889 { 1271 {
890 struct ev_periodic *w = periodics [i]; 1272 ev_periodic *w = periodics [i];
891 1273
1274 if (w->reschedule_cb)
1275 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
892 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--; )
893 { 1295 {
894 ev_tstamp diff = ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval; 1296 if (pendingcnt [pri])
1297 break;
895 1298
896 if (fabs (diff) >= 1e-4) 1299 if (idlecnt [pri])
897 { 1300 {
898 ev_periodic_stop (EV_A_ w); 1301 queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
899 ev_periodic_start (EV_A_ w); 1302 break;
900
901 i = 0; /* restart loop, inefficient, but time jumps should be rare */
902 } 1303 }
903 } 1304 }
904 } 1305 }
905} 1306}
1307#endif
906 1308
907inline int 1309void inline_speed
908time_update_monotonic (EV_P) 1310time_update (EV_P_ ev_tstamp max_block)
909{
910 mn_now = get_clock ();
911
912 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
913 {
914 rt_now = rtmn_diff + mn_now;
915 return 0;
916 }
917 else
918 {
919 now_floor = mn_now;
920 rt_now = ev_time ();
921 return 1;
922 }
923}
924
925static void
926time_update (EV_P)
927{ 1311{
928 int i; 1312 int i;
929 1313
930#if EV_USE_MONOTONIC 1314#if EV_USE_MONOTONIC
931 if (expect_true (have_monotonic)) 1315 if (expect_true (have_monotonic))
932 { 1316 {
933 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))
934 { 1324 {
935 ev_tstamp odiff = rtmn_diff; 1325 ev_rt_now = rtmn_diff + mn_now;
1326 return;
1327 }
936 1328
1329 now_floor = mn_now;
1330 ev_rt_now = ev_time ();
1331
937 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; )
938 { 1341 {
939 rtmn_diff = rt_now - mn_now; 1342 rtmn_diff = ev_rt_now - mn_now;
940 1343
941 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) 1344 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
942 return; /* all is well */ 1345 return; /* all is well */
943 1346
944 rt_now = ev_time (); 1347 ev_rt_now = ev_time ();
945 mn_now = get_clock (); 1348 mn_now = get_clock ();
946 now_floor = mn_now; 1349 now_floor = mn_now;
947 } 1350 }
948 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
949 periodics_reschedule (EV_A); 1366 periodics_reschedule (EV_A);
950 /* no timer adjustment, as the monotonic clock doesn't jump */ 1367#endif
951 /* 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;
952 } 1371 }
953 }
954 else
955#endif
956 {
957 rt_now = ev_time ();
958 1372
959 if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
960 {
961 periodics_reschedule (EV_A);
962
963 /* adjust timers. this is easy, as the offset is the same for all */
964 for (i = 0; i < timercnt; ++i)
965 ((WT)timers [i])->at += rt_now - mn_now;
966 }
967
968 mn_now = rt_now; 1373 mn_now = ev_rt_now;
969 } 1374 }
970} 1375}
971 1376
972void 1377void
973ev_ref (EV_P) 1378ev_ref (EV_P)
… …
984static int loop_done; 1389static int loop_done;
985 1390
986void 1391void
987ev_loop (EV_P_ int flags) 1392ev_loop (EV_P_ int flags)
988{ 1393{
989 double block;
990 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 */
991 1399
992 do 1400 do
993 { 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
994 /* queue check watchers (and execute them) */ 1421 /* queue prepare watchers (and execute them) */
995 if (expect_false (preparecnt)) 1422 if (expect_false (preparecnt))
996 { 1423 {
997 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 1424 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
998 call_pending (EV_A); 1425 call_pending (EV_A);
999 } 1426 }
1000 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
1001 /* update fd-related kernel structures */ 1435 /* update fd-related kernel structures */
1002 fd_reify (EV_A); 1436 fd_reify (EV_A);
1003 1437
1004 /* calculate blocking time */ 1438 /* calculate blocking time */
1439 {
1440 ev_tstamp block;
1005 1441
1006 /* we only need this for !monotonic clockor timers, but as we basically 1442 if (expect_false (flags & EVLOOP_NONBLOCK || idleall || !activecnt))
1007 always have timers, we just calculate it always */ 1443 block = 0.; /* do not block at all */
1008#if EV_USE_MONOTONIC
1009 if (expect_true (have_monotonic))
1010 time_update_monotonic (EV_A);
1011 else 1444 else
1012#endif
1013 { 1445 {
1014 rt_now = ev_time (); 1446 /* update time to cancel out callback processing overhead */
1015 mn_now = rt_now; 1447 time_update (EV_A_ 1e100);
1016 }
1017 1448
1018 if (flags & EVLOOP_NONBLOCK || idlecnt)
1019 block = 0.;
1020 else
1021 {
1022 block = MAX_BLOCKTIME; 1449 block = MAX_BLOCKTIME;
1023 1450
1024 if (timercnt) 1451 if (timercnt)
1025 { 1452 {
1026 ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge; 1453 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1027 if (block > to) block = to; 1454 if (block > to) block = to;
1028 } 1455 }
1029 1456
1457#if EV_PERIODIC_ENABLE
1030 if (periodiccnt) 1458 if (periodiccnt)
1031 { 1459 {
1032 ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge; 1460 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1033 if (block > to) block = to; 1461 if (block > to) block = to;
1034 } 1462 }
1463#endif
1035 1464
1036 if (block < 0.) block = 0.; 1465 if (expect_false (block < 0.)) block = 0.;
1037 } 1466 }
1038 1467
1468 ++loop_count;
1039 method_poll (EV_A_ block); 1469 backend_poll (EV_A_ block);
1040 1470
1041 /* update rt_now, do magic */ 1471 /* update ev_rt_now, do magic */
1042 time_update (EV_A); 1472 time_update (EV_A_ block);
1473 }
1043 1474
1044 /* queue pending timers and reschedule them */ 1475 /* queue pending timers and reschedule them */
1045 timers_reify (EV_A); /* relative timers called last */ 1476 timers_reify (EV_A); /* relative timers called last */
1477#if EV_PERIODIC_ENABLE
1046 periodics_reify (EV_A); /* absolute timers called first */ 1478 periodics_reify (EV_A); /* absolute timers called first */
1479#endif
1047 1480
1481#if EV_IDLE_ENABLE
1048 /* queue idle watchers unless io or timers are pending */ 1482 /* queue idle watchers unless other events are pending */
1049 if (!pendingcnt) 1483 idle_reify (EV_A);
1050 queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); 1484#endif
1051 1485
1052 /* queue check watchers, to be executed first */ 1486 /* queue check watchers, to be executed first */
1053 if (checkcnt) 1487 if (expect_false (checkcnt))
1054 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 1488 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1055 1489
1056 call_pending (EV_A); 1490 call_pending (EV_A);
1491
1057 } 1492 }
1058 while (activecnt && !loop_done); 1493 while (expect_true (activecnt && !loop_done));
1059 1494
1060 if (loop_done != 2) 1495 if (loop_done == EVUNLOOP_ONE)
1061 loop_done = 0; 1496 loop_done = EVUNLOOP_CANCEL;
1062} 1497}
1063 1498
1064void 1499void
1065ev_unloop (EV_P_ int how) 1500ev_unloop (EV_P_ int how)
1066{ 1501{
1067 loop_done = how; 1502 loop_done = how;
1068} 1503}
1069 1504
1070/*****************************************************************************/ 1505/*****************************************************************************/
1071 1506
1072inline void 1507void inline_size
1073wlist_add (WL *head, WL elem) 1508wlist_add (WL *head, WL elem)
1074{ 1509{
1075 elem->next = *head; 1510 elem->next = *head;
1076 *head = elem; 1511 *head = elem;
1077} 1512}
1078 1513
1079inline void 1514void inline_size
1080wlist_del (WL *head, WL elem) 1515wlist_del (WL *head, WL elem)
1081{ 1516{
1082 while (*head) 1517 while (*head)
1083 { 1518 {
1084 if (*head == elem) 1519 if (*head == elem)
… …
1089 1524
1090 head = &(*head)->next; 1525 head = &(*head)->next;
1091 } 1526 }
1092} 1527}
1093 1528
1094inline void 1529void inline_speed
1095ev_clear_pending (EV_P_ W w) 1530clear_pending (EV_P_ W w)
1096{ 1531{
1097 if (w->pending) 1532 if (w->pending)
1098 { 1533 {
1099 pendings [ABSPRI (w)][w->pending - 1].w = 0; 1534 pendings [ABSPRI (w)][w->pending - 1].w = 0;
1100 w->pending = 0; 1535 w->pending = 0;
1101 } 1536 }
1102} 1537}
1103 1538
1104inline 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
1105ev_start (EV_P_ W w, int active) 1566ev_start (EV_P_ W w, int active)
1106{ 1567{
1107 if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; 1568 pri_adjust (EV_A_ w);
1108 if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1109
1110 w->active = active; 1569 w->active = active;
1111 ev_ref (EV_A); 1570 ev_ref (EV_A);
1112} 1571}
1113 1572
1114inline void 1573void inline_size
1115ev_stop (EV_P_ W w) 1574ev_stop (EV_P_ W w)
1116{ 1575{
1117 ev_unref (EV_A); 1576 ev_unref (EV_A);
1118 w->active = 0; 1577 w->active = 0;
1119} 1578}
1120 1579
1121/*****************************************************************************/ 1580/*****************************************************************************/
1122 1581
1123void 1582void noinline
1124ev_io_start (EV_P_ struct ev_io *w) 1583ev_io_start (EV_P_ ev_io *w)
1125{ 1584{
1126 int fd = w->fd; 1585 int fd = w->fd;
1127 1586
1128 if (ev_is_active (w)) 1587 if (expect_false (ev_is_active (w)))
1129 return; 1588 return;
1130 1589
1131 assert (("ev_io_start called with negative fd", fd >= 0)); 1590 assert (("ev_io_start called with negative fd", fd >= 0));
1132 1591
1133 ev_start (EV_A_ (W)w, 1); 1592 ev_start (EV_A_ (W)w, 1);
1134 array_needsize (anfds, anfdmax, fd + 1, anfds_init); 1593 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1135 wlist_add ((WL *)&anfds[fd].head, (WL)w); 1594 wlist_add ((WL *)&anfds[fd].head, (WL)w);
1136 1595
1137 fd_change (EV_A_ fd); 1596 fd_change (EV_A_ fd);
1138} 1597}
1139 1598
1140void 1599void noinline
1141ev_io_stop (EV_P_ struct ev_io *w) 1600ev_io_stop (EV_P_ ev_io *w)
1142{ 1601{
1143 ev_clear_pending (EV_A_ (W)w); 1602 clear_pending (EV_A_ (W)w);
1144 if (!ev_is_active (w)) 1603 if (expect_false (!ev_is_active (w)))
1145 return; 1604 return;
1605
1606 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1146 1607
1147 wlist_del ((WL *)&anfds[w->fd].head, (WL)w); 1608 wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
1148 ev_stop (EV_A_ (W)w); 1609 ev_stop (EV_A_ (W)w);
1149 1610
1150 fd_change (EV_A_ w->fd); 1611 fd_change (EV_A_ w->fd);
1151} 1612}
1152 1613
1153void 1614void noinline
1154ev_timer_start (EV_P_ struct ev_timer *w) 1615ev_timer_start (EV_P_ ev_timer *w)
1155{ 1616{
1156 if (ev_is_active (w)) 1617 if (expect_false (ev_is_active (w)))
1157 return; 1618 return;
1158 1619
1159 ((WT)w)->at += mn_now; 1620 ((WT)w)->at += mn_now;
1160 1621
1161 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.));
1162 1623
1163 ev_start (EV_A_ (W)w, ++timercnt); 1624 ev_start (EV_A_ (W)w, ++timercnt);
1164 array_needsize (timers, timermax, timercnt, ); 1625 array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);
1165 timers [timercnt - 1] = w; 1626 timers [timercnt - 1] = w;
1166 upheap ((WT *)timers, timercnt - 1); 1627 upheap ((WT *)timers, timercnt - 1);
1167 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
1168 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 1639 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1169}
1170 1640
1171void 1641 {
1172ev_timer_stop (EV_P_ struct ev_timer *w) 1642 int active = ((W)w)->active;
1173{
1174 ev_clear_pending (EV_A_ (W)w);
1175 if (!ev_is_active (w))
1176 return;
1177 1643
1178 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 1644 if (expect_true (--active < --timercnt))
1179
1180 if (((W)w)->active < timercnt--)
1181 { 1645 {
1182 timers [((W)w)->active - 1] = timers [timercnt]; 1646 timers [active] = timers [timercnt];
1183 downheap ((WT *)timers, timercnt, ((W)w)->active - 1); 1647 adjustheap ((WT *)timers, timercnt, active);
1184 } 1648 }
1649 }
1185 1650
1186 ((WT)w)->at = w->repeat; 1651 ((WT)w)->at -= mn_now;
1187 1652
1188 ev_stop (EV_A_ (W)w); 1653 ev_stop (EV_A_ (W)w);
1189} 1654}
1190 1655
1191void 1656void noinline
1192ev_timer_again (EV_P_ struct ev_timer *w) 1657ev_timer_again (EV_P_ ev_timer *w)
1193{ 1658{
1194 if (ev_is_active (w)) 1659 if (ev_is_active (w))
1195 { 1660 {
1196 if (w->repeat) 1661 if (w->repeat)
1197 { 1662 {
1198 ((WT)w)->at = mn_now + w->repeat; 1663 ((WT)w)->at = mn_now + w->repeat;
1199 downheap ((WT *)timers, timercnt, ((W)w)->active - 1); 1664 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1200 } 1665 }
1201 else 1666 else
1202 ev_timer_stop (EV_A_ w); 1667 ev_timer_stop (EV_A_ w);
1203 } 1668 }
1204 else if (w->repeat) 1669 else if (w->repeat)
1670 {
1671 w->at = w->repeat;
1205 ev_timer_start (EV_A_ w); 1672 ev_timer_start (EV_A_ w);
1673 }
1206} 1674}
1207 1675
1208void 1676#if EV_PERIODIC_ENABLE
1677void noinline
1209ev_periodic_start (EV_P_ struct ev_periodic *w) 1678ev_periodic_start (EV_P_ ev_periodic *w)
1210{ 1679{
1211 if (ev_is_active (w)) 1680 if (expect_false (ev_is_active (w)))
1212 return; 1681 return;
1213 1682
1683 if (w->reschedule_cb)
1684 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1685 else if (w->interval)
1686 {
1214 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.));
1215
1216 /* 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 */
1217 if (w->interval)
1218 ((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;
1219 1693
1220 ev_start (EV_A_ (W)w, ++periodiccnt); 1694 ev_start (EV_A_ (W)w, ++periodiccnt);
1221 array_needsize (periodics, periodicmax, periodiccnt, ); 1695 array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1222 periodics [periodiccnt - 1] = w; 1696 periodics [periodiccnt - 1] = w;
1223 upheap ((WT *)periodics, periodiccnt - 1); 1697 upheap ((WT *)periodics, periodiccnt - 1);
1224 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
1225 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1709 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1226}
1227 1710
1228void 1711 {
1229ev_periodic_stop (EV_P_ struct ev_periodic *w) 1712 int active = ((W)w)->active;
1230{
1231 ev_clear_pending (EV_A_ (W)w);
1232 if (!ev_is_active (w))
1233 return;
1234 1713
1235 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1714 if (expect_true (--active < --periodiccnt))
1236
1237 if (((W)w)->active < periodiccnt--)
1238 { 1715 {
1239 periodics [((W)w)->active - 1] = periodics [periodiccnt]; 1716 periodics [active] = periodics [periodiccnt];
1240 downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1); 1717 adjustheap ((WT *)periodics, periodiccnt, active);
1241 } 1718 }
1719 }
1242 1720
1243 ev_stop (EV_A_ (W)w); 1721 ev_stop (EV_A_ (W)w);
1244} 1722}
1245 1723
1246void 1724void noinline
1247ev_idle_start (EV_P_ struct ev_idle *w) 1725ev_periodic_again (EV_P_ ev_periodic *w)
1248{ 1726{
1249 if (ev_is_active (w)) 1727 /* TODO: use adjustheap and recalculation */
1250 return;
1251
1252 ev_start (EV_A_ (W)w, ++idlecnt);
1253 array_needsize (idles, idlemax, idlecnt, );
1254 idles [idlecnt - 1] = w;
1255}
1256
1257void
1258ev_idle_stop (EV_P_ struct ev_idle *w)
1259{
1260 ev_clear_pending (EV_A_ (W)w);
1261 if (ev_is_active (w))
1262 return;
1263
1264 idles [((W)w)->active - 1] = idles [--idlecnt];
1265 ev_stop (EV_A_ (W)w); 1728 ev_periodic_stop (EV_A_ w);
1729 ev_periodic_start (EV_A_ w);
1266} 1730}
1267 1731#endif
1268void
1269ev_prepare_start (EV_P_ struct ev_prepare *w)
1270{
1271 if (ev_is_active (w))
1272 return;
1273
1274 ev_start (EV_A_ (W)w, ++preparecnt);
1275 array_needsize (prepares, preparemax, preparecnt, );
1276 prepares [preparecnt - 1] = w;
1277}
1278
1279void
1280ev_prepare_stop (EV_P_ struct ev_prepare *w)
1281{
1282 ev_clear_pending (EV_A_ (W)w);
1283 if (ev_is_active (w))
1284 return;
1285
1286 prepares [((W)w)->active - 1] = prepares [--preparecnt];
1287 ev_stop (EV_A_ (W)w);
1288}
1289
1290void
1291ev_check_start (EV_P_ struct ev_check *w)
1292{
1293 if (ev_is_active (w))
1294 return;
1295
1296 ev_start (EV_A_ (W)w, ++checkcnt);
1297 array_needsize (checks, checkmax, checkcnt, );
1298 checks [checkcnt - 1] = w;
1299}
1300
1301void
1302ev_check_stop (EV_P_ struct ev_check *w)
1303{
1304 ev_clear_pending (EV_A_ (W)w);
1305 if (ev_is_active (w))
1306 return;
1307
1308 checks [((W)w)->active - 1] = checks [--checkcnt];
1309 ev_stop (EV_A_ (W)w);
1310}
1311 1732
1312#ifndef SA_RESTART 1733#ifndef SA_RESTART
1313# define SA_RESTART 0 1734# define SA_RESTART 0
1314#endif 1735#endif
1315 1736
1316void 1737void noinline
1317ev_signal_start (EV_P_ struct ev_signal *w) 1738ev_signal_start (EV_P_ ev_signal *w)
1318{ 1739{
1319#if EV_MULTIPLICITY 1740#if EV_MULTIPLICITY
1320 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));
1321#endif 1742#endif
1322 if (ev_is_active (w)) 1743 if (expect_false (ev_is_active (w)))
1323 return; 1744 return;
1324 1745
1325 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));
1326 1747
1327 ev_start (EV_A_ (W)w, 1); 1748 ev_start (EV_A_ (W)w, 1);
1328 array_needsize (signals, signalmax, w->signum, signals_init); 1749 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1329 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); 1750 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1330 1751
1331 if (!((WL)w)->next) 1752 if (!((WL)w)->next)
1332 { 1753 {
1333#if WIN32 1754#if _WIN32
1334 signal (w->signum, sighandler); 1755 signal (w->signum, sighandler);
1335#else 1756#else
1336 struct sigaction sa; 1757 struct sigaction sa;
1337 sa.sa_handler = sighandler; 1758 sa.sa_handler = sighandler;
1338 sigfillset (&sa.sa_mask); 1759 sigfillset (&sa.sa_mask);
… …
1340 sigaction (w->signum, &sa, 0); 1761 sigaction (w->signum, &sa, 0);
1341#endif 1762#endif
1342 } 1763 }
1343} 1764}
1344 1765
1345void 1766void noinline
1346ev_signal_stop (EV_P_ struct ev_signal *w) 1767ev_signal_stop (EV_P_ ev_signal *w)
1347{ 1768{
1348 ev_clear_pending (EV_A_ (W)w); 1769 clear_pending (EV_A_ (W)w);
1349 if (!ev_is_active (w)) 1770 if (expect_false (!ev_is_active (w)))
1350 return; 1771 return;
1351 1772
1352 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); 1773 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1353 ev_stop (EV_A_ (W)w); 1774 ev_stop (EV_A_ (W)w);
1354 1775
1355 if (!signals [w->signum - 1].head) 1776 if (!signals [w->signum - 1].head)
1356 signal (w->signum, SIG_DFL); 1777 signal (w->signum, SIG_DFL);
1357} 1778}
1358 1779
1359void 1780void
1360ev_child_start (EV_P_ struct ev_child *w) 1781ev_child_start (EV_P_ ev_child *w)
1361{ 1782{
1362#if EV_MULTIPLICITY 1783#if EV_MULTIPLICITY
1363 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));
1364#endif 1785#endif
1365 if (ev_is_active (w)) 1786 if (expect_false (ev_is_active (w)))
1366 return; 1787 return;
1367 1788
1368 ev_start (EV_A_ (W)w, 1); 1789 ev_start (EV_A_ (W)w, 1);
1369 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1790 wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1370} 1791}
1371 1792
1372void 1793void
1373ev_child_stop (EV_P_ struct ev_child *w) 1794ev_child_stop (EV_P_ ev_child *w)
1374{ 1795{
1375 ev_clear_pending (EV_A_ (W)w); 1796 clear_pending (EV_A_ (W)w);
1376 if (ev_is_active (w)) 1797 if (expect_false (!ev_is_active (w)))
1377 return; 1798 return;
1378 1799
1379 wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1800 wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1380 ev_stop (EV_A_ (W)w); 1801 ev_stop (EV_A_ (W)w);
1381} 1802}
1382 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
1383/*****************************************************************************/ 2226/*****************************************************************************/
1384 2227
1385struct ev_once 2228struct ev_once
1386{ 2229{
1387 struct ev_io io; 2230 ev_io io;
1388 struct ev_timer to; 2231 ev_timer to;
1389 void (*cb)(int revents, void *arg); 2232 void (*cb)(int revents, void *arg);
1390 void *arg; 2233 void *arg;
1391}; 2234};
1392 2235
1393static void 2236static void
… …
1396 void (*cb)(int revents, void *arg) = once->cb; 2239 void (*cb)(int revents, void *arg) = once->cb;
1397 void *arg = once->arg; 2240 void *arg = once->arg;
1398 2241
1399 ev_io_stop (EV_A_ &once->io); 2242 ev_io_stop (EV_A_ &once->io);
1400 ev_timer_stop (EV_A_ &once->to); 2243 ev_timer_stop (EV_A_ &once->to);
1401 free (once); 2244 ev_free (once);
1402 2245
1403 cb (revents, arg); 2246 cb (revents, arg);
1404} 2247}
1405 2248
1406static void 2249static void
1407once_cb_io (EV_P_ struct ev_io *w, int revents) 2250once_cb_io (EV_P_ ev_io *w, int revents)
1408{ 2251{
1409 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);
1410} 2253}
1411 2254
1412static void 2255static void
1413once_cb_to (EV_P_ struct ev_timer *w, int revents) 2256once_cb_to (EV_P_ ev_timer *w, int revents)
1414{ 2257{
1415 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);
1416} 2259}
1417 2260
1418void 2261void
1419ev_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)
1420{ 2263{
1421 struct ev_once *once = malloc (sizeof (struct ev_once)); 2264 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1422 2265
1423 if (!once) 2266 if (expect_false (!once))
2267 {
1424 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 2268 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1425 else 2269 return;
1426 { 2270 }
2271
1427 once->cb = cb; 2272 once->cb = cb;
1428 once->arg = arg; 2273 once->arg = arg;
1429 2274
1430 ev_watcher_init (&once->io, once_cb_io); 2275 ev_init (&once->io, once_cb_io);
1431 if (fd >= 0) 2276 if (fd >= 0)
1432 { 2277 {
1433 ev_io_set (&once->io, fd, events); 2278 ev_io_set (&once->io, fd, events);
1434 ev_io_start (EV_A_ &once->io); 2279 ev_io_start (EV_A_ &once->io);
1435 } 2280 }
1436 2281
1437 ev_watcher_init (&once->to, once_cb_to); 2282 ev_init (&once->to, once_cb_to);
1438 if (timeout >= 0.) 2283 if (timeout >= 0.)
1439 { 2284 {
1440 ev_timer_set (&once->to, timeout, 0.); 2285 ev_timer_set (&once->to, timeout, 0.);
1441 ev_timer_start (EV_A_ &once->to); 2286 ev_timer_start (EV_A_ &once->to);
1442 }
1443 } 2287 }
1444} 2288}
1445 2289
2290#ifdef __cplusplus
2291}
2292#endif
2293

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