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Comparing libev/ev.c (file contents):
Revision 1.83 by root, Fri Nov 9 21:48:23 2007 UTC vs.
Revision 1.163 by root, Wed Dec 5 13:54:36 2007 UTC

… …
26 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
29 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 */ 30 */
31
32#ifdef __cplusplus
33extern "C" {
34#endif
35
31#ifndef EV_STANDALONE 36#ifndef EV_STANDALONE
37# ifdef EV_CONFIG_H
38# include EV_CONFIG_H
39# else
32# include "config.h" 40# include "config.h"
41# endif
33 42
34# if HAVE_CLOCK_GETTIME 43# if HAVE_CLOCK_GETTIME
44# ifndef EV_USE_MONOTONIC
35# define EV_USE_MONOTONIC 1 45# define EV_USE_MONOTONIC 1
46# endif
47# ifndef EV_USE_REALTIME
36# define EV_USE_REALTIME 1 48# define EV_USE_REALTIME 1
49# endif
50# else
51# ifndef EV_USE_MONOTONIC
52# define EV_USE_MONOTONIC 0
53# endif
54# ifndef EV_USE_REALTIME
55# define EV_USE_REALTIME 0
56# endif
37# endif 57# endif
38 58
59# ifndef EV_USE_SELECT
39# if HAVE_SELECT && HAVE_SYS_SELECT_H 60# if HAVE_SELECT && HAVE_SYS_SELECT_H
40# define EV_USE_SELECT 1 61# define EV_USE_SELECT 1
62# else
63# define EV_USE_SELECT 0
64# endif
41# endif 65# endif
42 66
67# ifndef EV_USE_POLL
43# if HAVE_POLL && HAVE_POLL_H 68# if HAVE_POLL && HAVE_POLL_H
44# define EV_USE_POLL 1 69# define EV_USE_POLL 1
70# else
71# define EV_USE_POLL 0
72# endif
45# endif 73# endif
46 74
75# ifndef EV_USE_EPOLL
47# if HAVE_EPOLL && HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H 76# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
48# define EV_USE_EPOLL 1 77# define EV_USE_EPOLL 1
78# else
79# define EV_USE_EPOLL 0
80# endif
49# endif 81# endif
50 82
83# ifndef EV_USE_KQUEUE
51# if HAVE_KQUEUE && HAVE_WORKING_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H 84# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H
52# define EV_USE_KQUEUE 1 85# define EV_USE_KQUEUE 1
86# else
87# define EV_USE_KQUEUE 0
88# endif
89# endif
90
91# ifndef EV_USE_PORT
92# if HAVE_PORT_H && HAVE_PORT_CREATE
93# define EV_USE_PORT 1
94# else
95# define EV_USE_PORT 0
96# endif
97# endif
98
99# ifndef EV_USE_INOTIFY
100# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
101# define EV_USE_INOTIFY 1
102# else
103# define EV_USE_INOTIFY 0
104# endif
53# endif 105# endif
54 106
55#endif 107#endif
56 108
57#include <math.h> 109#include <math.h>
… …
66#include <sys/types.h> 118#include <sys/types.h>
67#include <time.h> 119#include <time.h>
68 120
69#include <signal.h> 121#include <signal.h>
70 122
71#ifndef WIN32
72# include <unistd.h>
73# include <sys/time.h>
74# include <sys/wait.h>
75#endif
76/**/
77
78#ifndef EV_USE_MONOTONIC
79# define EV_USE_MONOTONIC 1
80#endif
81
82#ifndef EV_USE_SELECT
83# define EV_USE_SELECT 1
84#endif
85
86#ifndef EV_USE_POLL
87# define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */
88#endif
89
90#ifndef EV_USE_EPOLL
91# define EV_USE_EPOLL 0
92#endif
93
94#ifndef EV_USE_KQUEUE
95# define EV_USE_KQUEUE 0
96#endif
97
98#ifndef EV_USE_WIN32
99# ifdef WIN32
100# define EV_USE_WIN32 0 /* it does not exist, use select */
101# undef EV_USE_SELECT
102# define EV_USE_SELECT 1
103# else
104# define EV_USE_WIN32 0
105# endif
106#endif
107
108#ifndef EV_USE_REALTIME
109# define EV_USE_REALTIME 1
110#endif
111
112/**/
113
114#ifndef CLOCK_MONOTONIC
115# undef EV_USE_MONOTONIC
116# define EV_USE_MONOTONIC 0
117#endif
118
119#ifndef CLOCK_REALTIME
120# undef EV_USE_REALTIME
121# define EV_USE_REALTIME 0
122#endif
123
124/**/
125
126#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
127#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */
128#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
129/*#define CLEANUP_INTERVAL 300. /* how often to try to free memory and re-check fds */
130
131#ifdef EV_H 123#ifdef EV_H
132# include EV_H 124# include EV_H
133#else 125#else
134# include "ev.h" 126# include "ev.h"
135#endif 127#endif
136 128
129#ifndef _WIN32
130# include <sys/time.h>
131# include <sys/wait.h>
132# include <unistd.h>
133#else
134# define WIN32_LEAN_AND_MEAN
135# include <windows.h>
136# ifndef EV_SELECT_IS_WINSOCKET
137# define EV_SELECT_IS_WINSOCKET 1
138# endif
139#endif
140
141/**/
142
143#ifndef EV_USE_MONOTONIC
144# define EV_USE_MONOTONIC 0
145#endif
146
147#ifndef EV_USE_REALTIME
148# define EV_USE_REALTIME 0
149#endif
150
151#ifndef EV_USE_SELECT
152# define EV_USE_SELECT 1
153#endif
154
155#ifndef EV_USE_POLL
156# ifdef _WIN32
157# define EV_USE_POLL 0
158# else
159# define EV_USE_POLL 1
160# endif
161#endif
162
163#ifndef EV_USE_EPOLL
164# define EV_USE_EPOLL 0
165#endif
166
167#ifndef EV_USE_KQUEUE
168# define EV_USE_KQUEUE 0
169#endif
170
171#ifndef EV_USE_PORT
172# define EV_USE_PORT 0
173#endif
174
175#ifndef EV_USE_INOTIFY
176# define EV_USE_INOTIFY 0
177#endif
178
179#ifndef EV_PID_HASHSIZE
180# if EV_MINIMAL
181# define EV_PID_HASHSIZE 1
182# else
183# define EV_PID_HASHSIZE 16
184# endif
185#endif
186
187#ifndef EV_INOTIFY_HASHSIZE
188# if EV_MINIMAL
189# define EV_INOTIFY_HASHSIZE 1
190# else
191# define EV_INOTIFY_HASHSIZE 16
192# endif
193#endif
194
195/**/
196
197#ifndef CLOCK_MONOTONIC
198# undef EV_USE_MONOTONIC
199# define EV_USE_MONOTONIC 0
200#endif
201
202#ifndef CLOCK_REALTIME
203# undef EV_USE_REALTIME
204# define EV_USE_REALTIME 0
205#endif
206
207#if EV_SELECT_IS_WINSOCKET
208# include <winsock.h>
209#endif
210
211#if !EV_STAT_ENABLE
212# define EV_USE_INOTIFY 0
213#endif
214
215#if EV_USE_INOTIFY
216# include <sys/inotify.h>
217#endif
218
219/**/
220
221#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
222#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
223/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds */
224
137#if __GNUC__ >= 3 225#if __GNUC__ >= 3
138# define expect(expr,value) __builtin_expect ((expr),(value)) 226# define expect(expr,value) __builtin_expect ((expr),(value))
227# define inline_size static inline /* inline for codesize */
228# if EV_MINIMAL
139# define inline inline 229# define noinline __attribute__ ((noinline))
230# define inline_speed static noinline
231# else
232# define noinline
233# define inline_speed static inline
234# endif
140#else 235#else
141# define expect(expr,value) (expr) 236# define expect(expr,value) (expr)
237# define inline_speed static
142# define inline static 238# define inline_size static
239# define noinline
143#endif 240#endif
144 241
145#define expect_false(expr) expect ((expr) != 0, 0) 242#define expect_false(expr) expect ((expr) != 0, 0)
146#define expect_true(expr) expect ((expr) != 0, 1) 243#define expect_true(expr) expect ((expr) != 0, 1)
147 244
148#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 245#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
149#define ABSPRI(w) ((w)->priority - EV_MINPRI) 246#define ABSPRI(w) ((w)->priority - EV_MINPRI)
150 247
248#define EMPTY0 /* required for microsofts broken pseudo-c compiler */
249#define EMPTY2(a,b) /* used to suppress some warnings */
250
151typedef struct ev_watcher *W; 251typedef ev_watcher *W;
152typedef struct ev_watcher_list *WL; 252typedef ev_watcher_list *WL;
153typedef struct ev_watcher_time *WT; 253typedef ev_watcher_time *WT;
154 254
155static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 255static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
156 256
257#ifdef _WIN32
157#include "ev_win32.c" 258# include "ev_win32.c"
259#endif
158 260
159/*****************************************************************************/ 261/*****************************************************************************/
160 262
161static void (*syserr_cb)(const char *msg); 263static void (*syserr_cb)(const char *msg);
162 264
265void
163void ev_set_syserr_cb (void (*cb)(const char *msg)) 266ev_set_syserr_cb (void (*cb)(const char *msg))
164{ 267{
165 syserr_cb = cb; 268 syserr_cb = cb;
166} 269}
167 270
168static void 271static void noinline
169syserr (const char *msg) 272syserr (const char *msg)
170{ 273{
171 if (!msg) 274 if (!msg)
172 msg = "(libev) system error"; 275 msg = "(libev) system error";
173 276
… …
180 } 283 }
181} 284}
182 285
183static void *(*alloc)(void *ptr, long size); 286static void *(*alloc)(void *ptr, long size);
184 287
288void
185void ev_set_allocator (void *(*cb)(void *ptr, long size)) 289ev_set_allocator (void *(*cb)(void *ptr, long size))
186{ 290{
187 alloc = cb; 291 alloc = cb;
188} 292}
189 293
190static void * 294inline_speed void *
191ev_realloc (void *ptr, long size) 295ev_realloc (void *ptr, long size)
192{ 296{
193 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size); 297 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
194 298
195 if (!ptr && size) 299 if (!ptr && size)
… …
209typedef struct 313typedef struct
210{ 314{
211 WL head; 315 WL head;
212 unsigned char events; 316 unsigned char events;
213 unsigned char reify; 317 unsigned char reify;
318#if EV_SELECT_IS_WINSOCKET
319 SOCKET handle;
320#endif
214} ANFD; 321} ANFD;
215 322
216typedef struct 323typedef struct
217{ 324{
218 W w; 325 W w;
219 int events; 326 int events;
220} ANPENDING; 327} ANPENDING;
221 328
329#if EV_USE_INOTIFY
330typedef struct
331{
332 WL head;
333} ANFS;
334#endif
335
222#if EV_MULTIPLICITY 336#if EV_MULTIPLICITY
223 337
224 struct ev_loop 338 struct ev_loop
225 { 339 {
340 ev_tstamp ev_rt_now;
341 #define ev_rt_now ((loop)->ev_rt_now)
226 #define VAR(name,decl) decl; 342 #define VAR(name,decl) decl;
227 #include "ev_vars.h" 343 #include "ev_vars.h"
228 #undef VAR 344 #undef VAR
229 }; 345 };
230 #include "ev_wrap.h" 346 #include "ev_wrap.h"
231 347
232 struct ev_loop default_loop_struct; 348 static struct ev_loop default_loop_struct;
233 static struct ev_loop *default_loop; 349 struct ev_loop *ev_default_loop_ptr;
234 350
235#else 351#else
236 352
353 ev_tstamp ev_rt_now;
237 #define VAR(name,decl) static decl; 354 #define VAR(name,decl) static decl;
238 #include "ev_vars.h" 355 #include "ev_vars.h"
239 #undef VAR 356 #undef VAR
240 357
241 static int default_loop; 358 static int ev_default_loop_ptr;
242 359
243#endif 360#endif
244 361
245/*****************************************************************************/ 362/*****************************************************************************/
246 363
247inline ev_tstamp 364ev_tstamp
248ev_time (void) 365ev_time (void)
249{ 366{
250#if EV_USE_REALTIME 367#if EV_USE_REALTIME
251 struct timespec ts; 368 struct timespec ts;
252 clock_gettime (CLOCK_REALTIME, &ts); 369 clock_gettime (CLOCK_REALTIME, &ts);
… …
256 gettimeofday (&tv, 0); 373 gettimeofday (&tv, 0);
257 return tv.tv_sec + tv.tv_usec * 1e-6; 374 return tv.tv_sec + tv.tv_usec * 1e-6;
258#endif 375#endif
259} 376}
260 377
261inline ev_tstamp 378ev_tstamp inline_size
262get_clock (void) 379get_clock (void)
263{ 380{
264#if EV_USE_MONOTONIC 381#if EV_USE_MONOTONIC
265 if (expect_true (have_monotonic)) 382 if (expect_true (have_monotonic))
266 { 383 {
… …
271#endif 388#endif
272 389
273 return ev_time (); 390 return ev_time ();
274} 391}
275 392
393#if EV_MULTIPLICITY
276ev_tstamp 394ev_tstamp
277ev_now (EV_P) 395ev_now (EV_P)
278{ 396{
279 return rt_now; 397 return ev_rt_now;
280} 398}
399#endif
281 400
282#define array_roundsize(type,n) ((n) | 4 & ~3) 401int inline_size
402array_nextsize (int elem, int cur, int cnt)
403{
404 int ncur = cur + 1;
405
406 do
407 ncur <<= 1;
408 while (cnt > ncur);
409
410 /* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */
411 if (elem * ncur > 4096)
412 {
413 ncur *= elem;
414 ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095;
415 ncur = ncur - sizeof (void *) * 4;
416 ncur /= elem;
417 }
418
419 return ncur;
420}
421
422inline_speed void *
423array_realloc (int elem, void *base, int *cur, int cnt)
424{
425 *cur = array_nextsize (elem, *cur, cnt);
426 return ev_realloc (base, elem * *cur);
427}
283 428
284#define array_needsize(type,base,cur,cnt,init) \ 429#define array_needsize(type,base,cur,cnt,init) \
285 if (expect_false ((cnt) > cur)) \ 430 if (expect_false ((cnt) > (cur))) \
286 { \ 431 { \
287 int newcnt = cur; \ 432 int ocur_ = (cur); \
288 do \ 433 (base) = (type *)array_realloc \
289 { \ 434 (sizeof (type), (base), &(cur), (cnt)); \
290 newcnt = array_roundsize (type, newcnt << 1); \ 435 init ((base) + (ocur_), (cur) - ocur_); \
291 } \
292 while ((cnt) > newcnt); \
293 \
294 base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\
295 init (base + cur, newcnt - cur); \
296 cur = newcnt; \
297 } 436 }
298 437
438#if 0
299#define array_slim(type,stem) \ 439#define array_slim(type,stem) \
300 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 440 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
301 { \ 441 { \
302 stem ## max = array_roundsize (stem ## cnt >> 1); \ 442 stem ## max = array_roundsize (stem ## cnt >> 1); \
303 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\ 443 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
304 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 444 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
305 } 445 }
306 446#endif
307/* microsoft's pseudo-c is quite far from C as the rest of the world and the standard knows it */
308/* bringing us everlasting joy in form of stupid extra macros that are not required in C */
309#define array_free_microshit(stem) \
310 ev_free (stem ## s); stem ## cnt = stem ## max = 0;
311 447
312#define array_free(stem, idx) \ 448#define array_free(stem, idx) \
313 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 449 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
314 450
315/*****************************************************************************/ 451/*****************************************************************************/
316 452
317static void 453void noinline
454ev_feed_event (EV_P_ void *w, int revents)
455{
456 W w_ = (W)w;
457
458 if (expect_false (w_->pending))
459 {
460 pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
461 return;
462 }
463
464 w_->pending = ++pendingcnt [ABSPRI (w_)];
465 array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
466 pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
467 pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
468}
469
470void inline_size
471queue_events (EV_P_ W *events, int eventcnt, int type)
472{
473 int i;
474
475 for (i = 0; i < eventcnt; ++i)
476 ev_feed_event (EV_A_ events [i], type);
477}
478
479/*****************************************************************************/
480
481void inline_size
318anfds_init (ANFD *base, int count) 482anfds_init (ANFD *base, int count)
319{ 483{
320 while (count--) 484 while (count--)
321 { 485 {
322 base->head = 0; 486 base->head = 0;
… …
325 489
326 ++base; 490 ++base;
327 } 491 }
328} 492}
329 493
330void 494void inline_speed
331ev_feed_event (EV_P_ void *w, int revents)
332{
333 W w_ = (W)w;
334
335 if (w_->pending)
336 {
337 pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
338 return;
339 }
340
341 w_->pending = ++pendingcnt [ABSPRI (w_)];
342 array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], (void));
343 pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
344 pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
345}
346
347static void
348queue_events (EV_P_ W *events, int eventcnt, int type)
349{
350 int i;
351
352 for (i = 0; i < eventcnt; ++i)
353 ev_feed_event (EV_A_ events [i], type);
354}
355
356inline void
357fd_event (EV_P_ int fd, int revents) 495fd_event (EV_P_ int fd, int revents)
358{ 496{
359 ANFD *anfd = anfds + fd; 497 ANFD *anfd = anfds + fd;
360 struct ev_io *w; 498 ev_io *w;
361 499
362 for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) 500 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
363 { 501 {
364 int ev = w->events & revents; 502 int ev = w->events & revents;
365 503
366 if (ev) 504 if (ev)
367 ev_feed_event (EV_A_ (W)w, ev); 505 ev_feed_event (EV_A_ (W)w, ev);
… …
372ev_feed_fd_event (EV_P_ int fd, int revents) 510ev_feed_fd_event (EV_P_ int fd, int revents)
373{ 511{
374 fd_event (EV_A_ fd, revents); 512 fd_event (EV_A_ fd, revents);
375} 513}
376 514
377/*****************************************************************************/ 515void inline_size
378
379static void
380fd_reify (EV_P) 516fd_reify (EV_P)
381{ 517{
382 int i; 518 int i;
383 519
384 for (i = 0; i < fdchangecnt; ++i) 520 for (i = 0; i < fdchangecnt; ++i)
385 { 521 {
386 int fd = fdchanges [i]; 522 int fd = fdchanges [i];
387 ANFD *anfd = anfds + fd; 523 ANFD *anfd = anfds + fd;
388 struct ev_io *w; 524 ev_io *w;
389 525
390 int events = 0; 526 int events = 0;
391 527
392 for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) 528 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
393 events |= w->events; 529 events |= w->events;
394 530
531#if EV_SELECT_IS_WINSOCKET
532 if (events)
533 {
534 unsigned long argp;
535 anfd->handle = _get_osfhandle (fd);
536 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
537 }
538#endif
539
395 anfd->reify = 0; 540 anfd->reify = 0;
396 541
397 method_modify (EV_A_ fd, anfd->events, events); 542 backend_modify (EV_A_ fd, anfd->events, events);
398 anfd->events = events; 543 anfd->events = events;
399 } 544 }
400 545
401 fdchangecnt = 0; 546 fdchangecnt = 0;
402} 547}
403 548
404static void 549void inline_size
405fd_change (EV_P_ int fd) 550fd_change (EV_P_ int fd)
406{ 551{
407 if (anfds [fd].reify) 552 if (expect_false (anfds [fd].reify))
408 return; 553 return;
409 554
410 anfds [fd].reify = 1; 555 anfds [fd].reify = 1;
411 556
412 ++fdchangecnt; 557 ++fdchangecnt;
413 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void)); 558 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
414 fdchanges [fdchangecnt - 1] = fd; 559 fdchanges [fdchangecnt - 1] = fd;
415} 560}
416 561
417static void 562void inline_speed
418fd_kill (EV_P_ int fd) 563fd_kill (EV_P_ int fd)
419{ 564{
420 struct ev_io *w; 565 ev_io *w;
421 566
422 while ((w = (struct ev_io *)anfds [fd].head)) 567 while ((w = (ev_io *)anfds [fd].head))
423 { 568 {
424 ev_io_stop (EV_A_ w); 569 ev_io_stop (EV_A_ w);
425 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 570 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
426 } 571 }
427} 572}
428 573
429static int 574int inline_size
430fd_valid (int fd) 575fd_valid (int fd)
431{ 576{
432#ifdef WIN32 577#ifdef _WIN32
433 return !!win32_get_osfhandle (fd); 578 return _get_osfhandle (fd) != -1;
434#else 579#else
435 return fcntl (fd, F_GETFD) != -1; 580 return fcntl (fd, F_GETFD) != -1;
436#endif 581#endif
437} 582}
438 583
439/* called on EBADF to verify fds */ 584/* called on EBADF to verify fds */
440static void 585static void noinline
441fd_ebadf (EV_P) 586fd_ebadf (EV_P)
442{ 587{
443 int fd; 588 int fd;
444 589
445 for (fd = 0; fd < anfdmax; ++fd) 590 for (fd = 0; fd < anfdmax; ++fd)
… …
447 if (!fd_valid (fd) == -1 && errno == EBADF) 592 if (!fd_valid (fd) == -1 && errno == EBADF)
448 fd_kill (EV_A_ fd); 593 fd_kill (EV_A_ fd);
449} 594}
450 595
451/* called on ENOMEM in select/poll to kill some fds and retry */ 596/* called on ENOMEM in select/poll to kill some fds and retry */
452static void 597static void noinline
453fd_enomem (EV_P) 598fd_enomem (EV_P)
454{ 599{
455 int fd; 600 int fd;
456 601
457 for (fd = anfdmax; fd--; ) 602 for (fd = anfdmax; fd--; )
… …
460 fd_kill (EV_A_ fd); 605 fd_kill (EV_A_ fd);
461 return; 606 return;
462 } 607 }
463} 608}
464 609
465/* usually called after fork if method needs to re-arm all fds from scratch */ 610/* usually called after fork if backend needs to re-arm all fds from scratch */
466static void 611static void noinline
467fd_rearm_all (EV_P) 612fd_rearm_all (EV_P)
468{ 613{
469 int fd; 614 int fd;
470 615
471 /* this should be highly optimised to not do anything but set a flag */
472 for (fd = 0; fd < anfdmax; ++fd) 616 for (fd = 0; fd < anfdmax; ++fd)
473 if (anfds [fd].events) 617 if (anfds [fd].events)
474 { 618 {
475 anfds [fd].events = 0; 619 anfds [fd].events = 0;
476 fd_change (EV_A_ fd); 620 fd_change (EV_A_ fd);
477 } 621 }
478} 622}
479 623
480/*****************************************************************************/ 624/*****************************************************************************/
481 625
482static void 626void inline_speed
483upheap (WT *heap, int k) 627upheap (WT *heap, int k)
484{ 628{
485 WT w = heap [k]; 629 WT w = heap [k];
486 630
487 while (k && heap [k >> 1]->at > w->at) 631 while (k && heap [k >> 1]->at > w->at)
… …
494 heap [k] = w; 638 heap [k] = w;
495 ((W)heap [k])->active = k + 1; 639 ((W)heap [k])->active = k + 1;
496 640
497} 641}
498 642
499static void 643void inline_speed
500downheap (WT *heap, int N, int k) 644downheap (WT *heap, int N, int k)
501{ 645{
502 WT w = heap [k]; 646 WT w = heap [k];
503 647
504 while (k < (N >> 1)) 648 while (k < (N >> 1))
… …
518 662
519 heap [k] = w; 663 heap [k] = w;
520 ((W)heap [k])->active = k + 1; 664 ((W)heap [k])->active = k + 1;
521} 665}
522 666
667void inline_size
668adjustheap (WT *heap, int N, int k)
669{
670 upheap (heap, k);
671 downheap (heap, N, k);
672}
673
523/*****************************************************************************/ 674/*****************************************************************************/
524 675
525typedef struct 676typedef struct
526{ 677{
527 WL head; 678 WL head;
… …
531static ANSIG *signals; 682static ANSIG *signals;
532static int signalmax; 683static int signalmax;
533 684
534static int sigpipe [2]; 685static int sigpipe [2];
535static sig_atomic_t volatile gotsig; 686static sig_atomic_t volatile gotsig;
536static struct ev_io sigev; 687static ev_io sigev;
537 688
538static void 689void inline_size
539signals_init (ANSIG *base, int count) 690signals_init (ANSIG *base, int count)
540{ 691{
541 while (count--) 692 while (count--)
542 { 693 {
543 base->head = 0; 694 base->head = 0;
… …
548} 699}
549 700
550static void 701static void
551sighandler (int signum) 702sighandler (int signum)
552{ 703{
553#if WIN32 704#if _WIN32
554 signal (signum, sighandler); 705 signal (signum, sighandler);
555#endif 706#endif
556 707
557 signals [signum - 1].gotsig = 1; 708 signals [signum - 1].gotsig = 1;
558 709
559 if (!gotsig) 710 if (!gotsig)
560 { 711 {
561 int old_errno = errno; 712 int old_errno = errno;
562 gotsig = 1; 713 gotsig = 1;
563#ifdef WIN32
564 send (sigpipe [1], &signum, 1, MSG_DONTWAIT);
565#else
566 write (sigpipe [1], &signum, 1); 714 write (sigpipe [1], &signum, 1);
567#endif
568 errno = old_errno; 715 errno = old_errno;
569 } 716 }
570} 717}
571 718
572void 719void noinline
573ev_feed_signal_event (EV_P_ int signum) 720ev_feed_signal_event (EV_P_ int signum)
574{ 721{
575 WL w; 722 WL w;
576 723
577#if EV_MULTIPLICITY 724#if EV_MULTIPLICITY
578 assert (("feeding signal events is only supported in the default loop", loop == default_loop)); 725 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
579#endif 726#endif
580 727
581 --signum; 728 --signum;
582 729
583 if (signum < 0 || signum >= signalmax) 730 if (signum < 0 || signum >= signalmax)
… …
588 for (w = signals [signum].head; w; w = w->next) 735 for (w = signals [signum].head; w; w = w->next)
589 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 736 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
590} 737}
591 738
592static void 739static void
593sigcb (EV_P_ struct ev_io *iow, int revents) 740sigcb (EV_P_ ev_io *iow, int revents)
594{ 741{
595 int signum; 742 int signum;
596 743
597#ifdef WIN32
598 recv (sigpipe [0], &revents, 1, MSG_DONTWAIT);
599#else
600 read (sigpipe [0], &revents, 1); 744 read (sigpipe [0], &revents, 1);
601#endif
602 gotsig = 0; 745 gotsig = 0;
603 746
604 for (signum = signalmax; signum--; ) 747 for (signum = signalmax; signum--; )
605 if (signals [signum].gotsig) 748 if (signals [signum].gotsig)
606 ev_feed_signal_event (EV_A_ signum + 1); 749 ev_feed_signal_event (EV_A_ signum + 1);
607} 750}
608 751
609static void 752void inline_size
753fd_intern (int fd)
754{
755#ifdef _WIN32
756 int arg = 1;
757 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
758#else
759 fcntl (fd, F_SETFD, FD_CLOEXEC);
760 fcntl (fd, F_SETFL, O_NONBLOCK);
761#endif
762}
763
764static void noinline
610siginit (EV_P) 765siginit (EV_P)
611{ 766{
612#ifndef WIN32 767 fd_intern (sigpipe [0]);
613 fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC); 768 fd_intern (sigpipe [1]);
614 fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
615
616 /* rather than sort out wether we really need nb, set it */
617 fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
618 fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
619#endif
620 769
621 ev_io_set (&sigev, sigpipe [0], EV_READ); 770 ev_io_set (&sigev, sigpipe [0], EV_READ);
622 ev_io_start (EV_A_ &sigev); 771 ev_io_start (EV_A_ &sigev);
623 ev_unref (EV_A); /* child watcher should not keep loop alive */ 772 ev_unref (EV_A); /* child watcher should not keep loop alive */
624} 773}
625 774
626/*****************************************************************************/ 775/*****************************************************************************/
627 776
628static struct ev_child *childs [PID_HASHSIZE]; 777static ev_child *childs [EV_PID_HASHSIZE];
629 778
630#ifndef WIN32 779#ifndef _WIN32
631 780
632static struct ev_signal childev; 781static ev_signal childev;
633 782
634#ifndef WCONTINUED 783void inline_speed
635# define WCONTINUED 0
636#endif
637
638static void
639child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status) 784child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
640{ 785{
641 struct ev_child *w; 786 ev_child *w;
642 787
643 for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next) 788 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
644 if (w->pid == pid || !w->pid) 789 if (w->pid == pid || !w->pid)
645 { 790 {
646 ev_priority (w) = ev_priority (sw); /* need to do it *now* */ 791 ev_priority (w) = ev_priority (sw); /* need to do it *now* */
647 w->rpid = pid; 792 w->rpid = pid;
648 w->rstatus = status; 793 w->rstatus = status;
649 ev_feed_event (EV_A_ (W)w, EV_CHILD); 794 ev_feed_event (EV_A_ (W)w, EV_CHILD);
650 } 795 }
651} 796}
652 797
798#ifndef WCONTINUED
799# define WCONTINUED 0
800#endif
801
653static void 802static void
654childcb (EV_P_ struct ev_signal *sw, int revents) 803childcb (EV_P_ ev_signal *sw, int revents)
655{ 804{
656 int pid, status; 805 int pid, status;
657 806
807 /* some systems define WCONTINUED but then fail to support it (linux 2.4) */
658 if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) 808 if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
659 { 809 if (!WCONTINUED
810 || errno != EINVAL
811 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
812 return;
813
660 /* make sure we are called again until all childs have been reaped */ 814 /* make sure we are called again until all childs have been reaped */
815 /* we need to do it this way so that the callback gets called before we continue */
661 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 816 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
662 817
663 child_reap (EV_A_ sw, pid, pid, status); 818 child_reap (EV_A_ sw, pid, pid, status);
819 if (EV_PID_HASHSIZE > 1)
664 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */ 820 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
665 }
666} 821}
667 822
668#endif 823#endif
669 824
670/*****************************************************************************/ 825/*****************************************************************************/
671 826
827#if EV_USE_PORT
828# include "ev_port.c"
829#endif
672#if EV_USE_KQUEUE 830#if EV_USE_KQUEUE
673# include "ev_kqueue.c" 831# include "ev_kqueue.c"
674#endif 832#endif
675#if EV_USE_EPOLL 833#if EV_USE_EPOLL
676# include "ev_epoll.c" 834# include "ev_epoll.c"
… …
693{ 851{
694 return EV_VERSION_MINOR; 852 return EV_VERSION_MINOR;
695} 853}
696 854
697/* return true if we are running with elevated privileges and should ignore env variables */ 855/* return true if we are running with elevated privileges and should ignore env variables */
698static int 856int inline_size
699enable_secure (void) 857enable_secure (void)
700{ 858{
701#ifdef WIN32 859#ifdef _WIN32
702 return 0; 860 return 0;
703#else 861#else
704 return getuid () != geteuid () 862 return getuid () != geteuid ()
705 || getgid () != getegid (); 863 || getgid () != getegid ();
706#endif 864#endif
707} 865}
708 866
709int 867unsigned int
710ev_method (EV_P) 868ev_supported_backends (void)
711{ 869{
712 return method; 870 unsigned int flags = 0;
713}
714 871
715static void 872 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
716loop_init (EV_P_ int methods) 873 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
874 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
875 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
876 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
877
878 return flags;
879}
880
881unsigned int
882ev_recommended_backends (void)
717{ 883{
718 if (!method) 884 unsigned int flags = ev_supported_backends ();
885
886#ifndef __NetBSD__
887 /* kqueue is borked on everything but netbsd apparently */
888 /* it usually doesn't work correctly on anything but sockets and pipes */
889 flags &= ~EVBACKEND_KQUEUE;
890#endif
891#ifdef __APPLE__
892 // flags &= ~EVBACKEND_KQUEUE; for documentation
893 flags &= ~EVBACKEND_POLL;
894#endif
895
896 return flags;
897}
898
899unsigned int
900ev_embeddable_backends (void)
901{
902 return EVBACKEND_EPOLL
903 | EVBACKEND_KQUEUE
904 | EVBACKEND_PORT;
905}
906
907unsigned int
908ev_backend (EV_P)
909{
910 return backend;
911}
912
913unsigned int
914ev_loop_count (EV_P)
915{
916 return loop_count;
917}
918
919static void noinline
920loop_init (EV_P_ unsigned int flags)
921{
922 if (!backend)
719 { 923 {
720#if EV_USE_MONOTONIC 924#if EV_USE_MONOTONIC
721 { 925 {
722 struct timespec ts; 926 struct timespec ts;
723 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 927 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
724 have_monotonic = 1; 928 have_monotonic = 1;
725 } 929 }
726#endif 930#endif
727 931
728 rt_now = ev_time (); 932 ev_rt_now = ev_time ();
729 mn_now = get_clock (); 933 mn_now = get_clock ();
730 now_floor = mn_now; 934 now_floor = mn_now;
731 rtmn_diff = rt_now - mn_now; 935 rtmn_diff = ev_rt_now - mn_now;
732 936
733 if (methods == EVMETHOD_AUTO) 937 /* pid check not overridable via env */
734 if (!enable_secure () && getenv ("LIBEV_METHODS")) 938#ifndef _WIN32
939 if (flags & EVFLAG_FORKCHECK)
940 curpid = getpid ();
941#endif
942
943 if (!(flags & EVFLAG_NOENV)
944 && !enable_secure ()
945 && getenv ("LIBEV_FLAGS"))
735 methods = atoi (getenv ("LIBEV_METHODS")); 946 flags = atoi (getenv ("LIBEV_FLAGS"));
736 else
737 methods = EVMETHOD_ANY;
738 947
739 method = 0; 948 if (!(flags & 0x0000ffffUL))
949 flags |= ev_recommended_backends ();
950
951 backend = 0;
952 backend_fd = -1;
740#if EV_USE_WIN32 953#if EV_USE_INOTIFY
741 if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods); 954 fs_fd = -2;
955#endif
956
957#if EV_USE_PORT
958 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
742#endif 959#endif
743#if EV_USE_KQUEUE 960#if EV_USE_KQUEUE
744 if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods); 961 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
745#endif 962#endif
746#if EV_USE_EPOLL 963#if EV_USE_EPOLL
747 if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods); 964 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
748#endif 965#endif
749#if EV_USE_POLL 966#if EV_USE_POLL
750 if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods); 967 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
751#endif 968#endif
752#if EV_USE_SELECT 969#if EV_USE_SELECT
753 if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods); 970 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
754#endif 971#endif
755 972
756 ev_init (&sigev, sigcb); 973 ev_init (&sigev, sigcb);
757 ev_set_priority (&sigev, EV_MAXPRI); 974 ev_set_priority (&sigev, EV_MAXPRI);
758 } 975 }
759} 976}
760 977
761void 978static void noinline
762loop_destroy (EV_P) 979loop_destroy (EV_P)
763{ 980{
764 int i; 981 int i;
765 982
766#if EV_USE_WIN32 983#if EV_USE_INOTIFY
767 if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A); 984 if (fs_fd >= 0)
985 close (fs_fd);
986#endif
987
988 if (backend_fd >= 0)
989 close (backend_fd);
990
991#if EV_USE_PORT
992 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
768#endif 993#endif
769#if EV_USE_KQUEUE 994#if EV_USE_KQUEUE
770 if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A); 995 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
771#endif 996#endif
772#if EV_USE_EPOLL 997#if EV_USE_EPOLL
773 if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A); 998 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
774#endif 999#endif
775#if EV_USE_POLL 1000#if EV_USE_POLL
776 if (method == EVMETHOD_POLL ) poll_destroy (EV_A); 1001 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
777#endif 1002#endif
778#if EV_USE_SELECT 1003#if EV_USE_SELECT
779 if (method == EVMETHOD_SELECT) select_destroy (EV_A); 1004 if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
780#endif 1005#endif
781 1006
782 for (i = NUMPRI; i--; ) 1007 for (i = NUMPRI; i--; )
783 array_free (pending, [i]); 1008 array_free (pending, [i]);
784 1009
785 /* have to use the microsoft-never-gets-it-right macro */ 1010 /* have to use the microsoft-never-gets-it-right macro */
786 array_free_microshit (fdchange); 1011 array_free (fdchange, EMPTY0);
787 array_free_microshit (timer); 1012 array_free (timer, EMPTY0);
788 array_free_microshit (periodic); 1013#if EV_PERIODIC_ENABLE
789 array_free_microshit (idle); 1014 array_free (periodic, EMPTY0);
790 array_free_microshit (prepare); 1015#endif
791 array_free_microshit (check); 1016 array_free (idle, EMPTY0);
1017 array_free (prepare, EMPTY0);
1018 array_free (check, EMPTY0);
792 1019
793 method = 0; 1020 backend = 0;
794} 1021}
795 1022
796static void 1023void inline_size infy_fork (EV_P);
1024
1025void inline_size
797loop_fork (EV_P) 1026loop_fork (EV_P)
798{ 1027{
1028#if EV_USE_PORT
1029 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1030#endif
1031#if EV_USE_KQUEUE
1032 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
1033#endif
799#if EV_USE_EPOLL 1034#if EV_USE_EPOLL
800 if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A); 1035 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
801#endif 1036#endif
802#if EV_USE_KQUEUE 1037#if EV_USE_INOTIFY
803 if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A); 1038 infy_fork (EV_A);
804#endif 1039#endif
805 1040
806 if (ev_is_active (&sigev)) 1041 if (ev_is_active (&sigev))
807 { 1042 {
808 /* default loop */ 1043 /* default loop */
… …
821 postfork = 0; 1056 postfork = 0;
822} 1057}
823 1058
824#if EV_MULTIPLICITY 1059#if EV_MULTIPLICITY
825struct ev_loop * 1060struct ev_loop *
826ev_loop_new (int methods) 1061ev_loop_new (unsigned int flags)
827{ 1062{
828 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 1063 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
829 1064
830 memset (loop, 0, sizeof (struct ev_loop)); 1065 memset (loop, 0, sizeof (struct ev_loop));
831 1066
832 loop_init (EV_A_ methods); 1067 loop_init (EV_A_ flags);
833 1068
834 if (ev_method (EV_A)) 1069 if (ev_backend (EV_A))
835 return loop; 1070 return loop;
836 1071
837 return 0; 1072 return 0;
838} 1073}
839 1074
… …
852 1087
853#endif 1088#endif
854 1089
855#if EV_MULTIPLICITY 1090#if EV_MULTIPLICITY
856struct ev_loop * 1091struct ev_loop *
1092ev_default_loop_init (unsigned int flags)
857#else 1093#else
858int 1094int
1095ev_default_loop (unsigned int flags)
859#endif 1096#endif
860ev_default_loop (int methods)
861{ 1097{
862 if (sigpipe [0] == sigpipe [1]) 1098 if (sigpipe [0] == sigpipe [1])
863 if (pipe (sigpipe)) 1099 if (pipe (sigpipe))
864 return 0; 1100 return 0;
865 1101
866 if (!default_loop) 1102 if (!ev_default_loop_ptr)
867 { 1103 {
868#if EV_MULTIPLICITY 1104#if EV_MULTIPLICITY
869 struct ev_loop *loop = default_loop = &default_loop_struct; 1105 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
870#else 1106#else
871 default_loop = 1; 1107 ev_default_loop_ptr = 1;
872#endif 1108#endif
873 1109
874 loop_init (EV_A_ methods); 1110 loop_init (EV_A_ flags);
875 1111
876 if (ev_method (EV_A)) 1112 if (ev_backend (EV_A))
877 { 1113 {
878 siginit (EV_A); 1114 siginit (EV_A);
879 1115
880#ifndef WIN32 1116#ifndef _WIN32
881 ev_signal_init (&childev, childcb, SIGCHLD); 1117 ev_signal_init (&childev, childcb, SIGCHLD);
882 ev_set_priority (&childev, EV_MAXPRI); 1118 ev_set_priority (&childev, EV_MAXPRI);
883 ev_signal_start (EV_A_ &childev); 1119 ev_signal_start (EV_A_ &childev);
884 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1120 ev_unref (EV_A); /* child watcher should not keep loop alive */
885#endif 1121#endif
886 } 1122 }
887 else 1123 else
888 default_loop = 0; 1124 ev_default_loop_ptr = 0;
889 } 1125 }
890 1126
891 return default_loop; 1127 return ev_default_loop_ptr;
892} 1128}
893 1129
894void 1130void
895ev_default_destroy (void) 1131ev_default_destroy (void)
896{ 1132{
897#if EV_MULTIPLICITY 1133#if EV_MULTIPLICITY
898 struct ev_loop *loop = default_loop; 1134 struct ev_loop *loop = ev_default_loop_ptr;
899#endif 1135#endif
900 1136
901#ifndef WIN32 1137#ifndef _WIN32
902 ev_ref (EV_A); /* child watcher */ 1138 ev_ref (EV_A); /* child watcher */
903 ev_signal_stop (EV_A_ &childev); 1139 ev_signal_stop (EV_A_ &childev);
904#endif 1140#endif
905 1141
906 ev_ref (EV_A); /* signal watcher */ 1142 ev_ref (EV_A); /* signal watcher */
… …
914 1150
915void 1151void
916ev_default_fork (void) 1152ev_default_fork (void)
917{ 1153{
918#if EV_MULTIPLICITY 1154#if EV_MULTIPLICITY
919 struct ev_loop *loop = default_loop; 1155 struct ev_loop *loop = ev_default_loop_ptr;
920#endif 1156#endif
921 1157
922 if (method) 1158 if (backend)
923 postfork = 1; 1159 postfork = 1;
924} 1160}
925 1161
926/*****************************************************************************/ 1162/*****************************************************************************/
927 1163
928static int 1164int inline_size
929any_pending (EV_P) 1165any_pending (EV_P)
930{ 1166{
931 int pri; 1167 int pri;
932 1168
933 for (pri = NUMPRI; pri--; ) 1169 for (pri = NUMPRI; pri--; )
… …
935 return 1; 1171 return 1;
936 1172
937 return 0; 1173 return 0;
938} 1174}
939 1175
940static void 1176void inline_speed
941call_pending (EV_P) 1177call_pending (EV_P)
942{ 1178{
943 int pri; 1179 int pri;
944 1180
945 for (pri = NUMPRI; pri--; ) 1181 for (pri = NUMPRI; pri--; )
946 while (pendingcnt [pri]) 1182 while (pendingcnt [pri])
947 { 1183 {
948 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 1184 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
949 1185
950 if (p->w) 1186 if (expect_true (p->w))
951 { 1187 {
1188 /*assert (("non-pending watcher on pending list", p->w->pending));*/
1189
952 p->w->pending = 0; 1190 p->w->pending = 0;
953 EV_CB_INVOKE (p->w, p->events); 1191 EV_CB_INVOKE (p->w, p->events);
954 } 1192 }
955 } 1193 }
956} 1194}
957 1195
958static void 1196void inline_size
959timers_reify (EV_P) 1197timers_reify (EV_P)
960{ 1198{
961 while (timercnt && ((WT)timers [0])->at <= mn_now) 1199 while (timercnt && ((WT)timers [0])->at <= mn_now)
962 { 1200 {
963 struct ev_timer *w = timers [0]; 1201 ev_timer *w = timers [0];
964 1202
965 assert (("inactive timer on timer heap detected", ev_is_active (w))); 1203 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
966 1204
967 /* first reschedule or stop timer */ 1205 /* first reschedule or stop timer */
968 if (w->repeat) 1206 if (w->repeat)
969 { 1207 {
970 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 1208 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1209
971 ((WT)w)->at = mn_now + w->repeat; 1210 ((WT)w)->at += w->repeat;
1211 if (((WT)w)->at < mn_now)
1212 ((WT)w)->at = mn_now;
1213
972 downheap ((WT *)timers, timercnt, 0); 1214 downheap ((WT *)timers, timercnt, 0);
973 } 1215 }
974 else 1216 else
975 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ 1217 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
976 1218
977 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); 1219 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
978 } 1220 }
979} 1221}
980 1222
981static void 1223#if EV_PERIODIC_ENABLE
1224void inline_size
982periodics_reify (EV_P) 1225periodics_reify (EV_P)
983{ 1226{
984 while (periodiccnt && ((WT)periodics [0])->at <= rt_now) 1227 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
985 { 1228 {
986 struct ev_periodic *w = periodics [0]; 1229 ev_periodic *w = periodics [0];
987 1230
988 assert (("inactive timer on periodic heap detected", ev_is_active (w))); 1231 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
989 1232
990 /* first reschedule or stop timer */ 1233 /* first reschedule or stop timer */
991 if (w->reschedule_cb) 1234 if (w->reschedule_cb)
992 { 1235 {
993 ev_tstamp at = ((WT)w)->at = w->reschedule_cb (w, rt_now + 0.0001); 1236 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
994
995 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > rt_now)); 1237 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
996 downheap ((WT *)periodics, periodiccnt, 0); 1238 downheap ((WT *)periodics, periodiccnt, 0);
997 } 1239 }
998 else if (w->interval) 1240 else if (w->interval)
999 { 1241 {
1000 ((WT)w)->at += floor ((rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval; 1242 ((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
1001 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > rt_now)); 1243 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1002 downheap ((WT *)periodics, periodiccnt, 0); 1244 downheap ((WT *)periodics, periodiccnt, 0);
1003 } 1245 }
1004 else 1246 else
1005 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 1247 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1006 1248
1007 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 1249 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1008 } 1250 }
1009} 1251}
1010 1252
1011static void 1253static void noinline
1012periodics_reschedule (EV_P) 1254periodics_reschedule (EV_P)
1013{ 1255{
1014 int i; 1256 int i;
1015 1257
1016 /* adjust periodics after time jump */ 1258 /* adjust periodics after time jump */
1017 for (i = 0; i < periodiccnt; ++i) 1259 for (i = 0; i < periodiccnt; ++i)
1018 { 1260 {
1019 struct ev_periodic *w = periodics [i]; 1261 ev_periodic *w = periodics [i];
1020 1262
1021 if (w->reschedule_cb) 1263 if (w->reschedule_cb)
1022 ((WT)w)->at = w->reschedule_cb (w, rt_now); 1264 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1023 else if (w->interval) 1265 else if (w->interval)
1024 ((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval; 1266 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
1025 } 1267 }
1026 1268
1027 /* now rebuild the heap */ 1269 /* now rebuild the heap */
1028 for (i = periodiccnt >> 1; i--; ) 1270 for (i = periodiccnt >> 1; i--; )
1029 downheap ((WT *)periodics, periodiccnt, i); 1271 downheap ((WT *)periodics, periodiccnt, i);
1030} 1272}
1273#endif
1031 1274
1032inline int 1275int inline_size
1033time_update_monotonic (EV_P) 1276time_update_monotonic (EV_P)
1034{ 1277{
1035 mn_now = get_clock (); 1278 mn_now = get_clock ();
1036 1279
1037 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 1280 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1038 { 1281 {
1039 rt_now = rtmn_diff + mn_now; 1282 ev_rt_now = rtmn_diff + mn_now;
1040 return 0; 1283 return 0;
1041 } 1284 }
1042 else 1285 else
1043 { 1286 {
1044 now_floor = mn_now; 1287 now_floor = mn_now;
1045 rt_now = ev_time (); 1288 ev_rt_now = ev_time ();
1046 return 1; 1289 return 1;
1047 } 1290 }
1048} 1291}
1049 1292
1050static void 1293void inline_size
1051time_update (EV_P) 1294time_update (EV_P)
1052{ 1295{
1053 int i; 1296 int i;
1054 1297
1055#if EV_USE_MONOTONIC 1298#if EV_USE_MONOTONIC
… …
1057 { 1300 {
1058 if (time_update_monotonic (EV_A)) 1301 if (time_update_monotonic (EV_A))
1059 { 1302 {
1060 ev_tstamp odiff = rtmn_diff; 1303 ev_tstamp odiff = rtmn_diff;
1061 1304
1062 for (i = 4; --i; ) /* loop a few times, before making important decisions */ 1305 /* loop a few times, before making important decisions.
1306 * on the choice of "4": one iteration isn't enough,
1307 * in case we get preempted during the calls to
1308 * ev_time and get_clock. a second call is almost guaranteed
1309 * to succeed in that case, though. and looping a few more times
1310 * doesn't hurt either as we only do this on time-jumps or
1311 * in the unlikely event of having been preempted here.
1312 */
1313 for (i = 4; --i; )
1063 { 1314 {
1064 rtmn_diff = rt_now - mn_now; 1315 rtmn_diff = ev_rt_now - mn_now;
1065 1316
1066 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) 1317 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1067 return; /* all is well */ 1318 return; /* all is well */
1068 1319
1069 rt_now = ev_time (); 1320 ev_rt_now = ev_time ();
1070 mn_now = get_clock (); 1321 mn_now = get_clock ();
1071 now_floor = mn_now; 1322 now_floor = mn_now;
1072 } 1323 }
1073 1324
1325# if EV_PERIODIC_ENABLE
1074 periodics_reschedule (EV_A); 1326 periodics_reschedule (EV_A);
1327# endif
1075 /* no timer adjustment, as the monotonic clock doesn't jump */ 1328 /* no timer adjustment, as the monotonic clock doesn't jump */
1076 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */ 1329 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1077 } 1330 }
1078 } 1331 }
1079 else 1332 else
1080#endif 1333#endif
1081 { 1334 {
1082 rt_now = ev_time (); 1335 ev_rt_now = ev_time ();
1083 1336
1084 if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP)) 1337 if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
1085 { 1338 {
1339#if EV_PERIODIC_ENABLE
1086 periodics_reschedule (EV_A); 1340 periodics_reschedule (EV_A);
1341#endif
1087 1342
1088 /* adjust timers. this is easy, as the offset is the same for all */ 1343 /* adjust timers. this is easy, as the offset is the same for all of them */
1089 for (i = 0; i < timercnt; ++i) 1344 for (i = 0; i < timercnt; ++i)
1090 ((WT)timers [i])->at += rt_now - mn_now; 1345 ((WT)timers [i])->at += ev_rt_now - mn_now;
1091 } 1346 }
1092 1347
1093 mn_now = rt_now; 1348 mn_now = ev_rt_now;
1094 } 1349 }
1095} 1350}
1096 1351
1097void 1352void
1098ev_ref (EV_P) 1353ev_ref (EV_P)
… …
1109static int loop_done; 1364static int loop_done;
1110 1365
1111void 1366void
1112ev_loop (EV_P_ int flags) 1367ev_loop (EV_P_ int flags)
1113{ 1368{
1114 double block;
1115 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0; 1369 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
1370 ? EVUNLOOP_ONE
1371 : EVUNLOOP_CANCEL;
1372
1373 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
1116 1374
1117 do 1375 do
1118 { 1376 {
1377#ifndef _WIN32
1378 if (expect_false (curpid)) /* penalise the forking check even more */
1379 if (expect_false (getpid () != curpid))
1380 {
1381 curpid = getpid ();
1382 postfork = 1;
1383 }
1384#endif
1385
1386#if EV_FORK_ENABLE
1387 /* we might have forked, so queue fork handlers */
1388 if (expect_false (postfork))
1389 if (forkcnt)
1390 {
1391 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1392 call_pending (EV_A);
1393 }
1394#endif
1395
1119 /* queue check watchers (and execute them) */ 1396 /* queue check watchers (and execute them) */
1120 if (expect_false (preparecnt)) 1397 if (expect_false (preparecnt))
1121 { 1398 {
1122 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 1399 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1123 call_pending (EV_A); 1400 call_pending (EV_A);
1124 } 1401 }
1125 1402
1403 if (expect_false (!activecnt))
1404 break;
1405
1126 /* we might have forked, so reify kernel state if necessary */ 1406 /* we might have forked, so reify kernel state if necessary */
1127 if (expect_false (postfork)) 1407 if (expect_false (postfork))
1128 loop_fork (EV_A); 1408 loop_fork (EV_A);
1129 1409
1130 /* update fd-related kernel structures */ 1410 /* update fd-related kernel structures */
1131 fd_reify (EV_A); 1411 fd_reify (EV_A);
1132 1412
1133 /* calculate blocking time */ 1413 /* calculate blocking time */
1414 {
1415 ev_tstamp block;
1134 1416
1135 /* we only need this for !monotonic clock or timers, but as we basically 1417 if (expect_false (flags & EVLOOP_NONBLOCK || idlecnt || !activecnt))
1136 always have timers, we just calculate it always */ 1418 block = 0.; /* do not block at all */
1419 else
1420 {
1421 /* update time to cancel out callback processing overhead */
1137#if EV_USE_MONOTONIC 1422#if EV_USE_MONOTONIC
1138 if (expect_true (have_monotonic)) 1423 if (expect_true (have_monotonic))
1139 time_update_monotonic (EV_A); 1424 time_update_monotonic (EV_A);
1140 else 1425 else
1141#endif 1426#endif
1142 { 1427 {
1143 rt_now = ev_time (); 1428 ev_rt_now = ev_time ();
1144 mn_now = rt_now; 1429 mn_now = ev_rt_now;
1145 } 1430 }
1146 1431
1147 if (flags & EVLOOP_NONBLOCK || idlecnt)
1148 block = 0.;
1149 else
1150 {
1151 block = MAX_BLOCKTIME; 1432 block = MAX_BLOCKTIME;
1152 1433
1153 if (timercnt) 1434 if (timercnt)
1154 { 1435 {
1155 ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge; 1436 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1156 if (block > to) block = to; 1437 if (block > to) block = to;
1157 } 1438 }
1158 1439
1440#if EV_PERIODIC_ENABLE
1159 if (periodiccnt) 1441 if (periodiccnt)
1160 { 1442 {
1161 ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge; 1443 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1162 if (block > to) block = to; 1444 if (block > to) block = to;
1163 } 1445 }
1446#endif
1164 1447
1165 if (block < 0.) block = 0.; 1448 if (expect_false (block < 0.)) block = 0.;
1166 } 1449 }
1167 1450
1451 ++loop_count;
1168 method_poll (EV_A_ block); 1452 backend_poll (EV_A_ block);
1453 }
1169 1454
1170 /* update rt_now, do magic */ 1455 /* update ev_rt_now, do magic */
1171 time_update (EV_A); 1456 time_update (EV_A);
1172 1457
1173 /* queue pending timers and reschedule them */ 1458 /* queue pending timers and reschedule them */
1174 timers_reify (EV_A); /* relative timers called last */ 1459 timers_reify (EV_A); /* relative timers called last */
1460#if EV_PERIODIC_ENABLE
1175 periodics_reify (EV_A); /* absolute timers called first */ 1461 periodics_reify (EV_A); /* absolute timers called first */
1462#endif
1176 1463
1177 /* queue idle watchers unless io or timers are pending */ 1464 /* queue idle watchers unless other events are pending */
1178 if (idlecnt && !any_pending (EV_A)) 1465 if (idlecnt && !any_pending (EV_A))
1179 queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); 1466 queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
1180 1467
1181 /* queue check watchers, to be executed first */ 1468 /* queue check watchers, to be executed first */
1182 if (checkcnt) 1469 if (expect_false (checkcnt))
1183 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 1470 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1184 1471
1185 call_pending (EV_A); 1472 call_pending (EV_A);
1473
1186 } 1474 }
1187 while (activecnt && !loop_done); 1475 while (expect_true (activecnt && !loop_done));
1188 1476
1189 if (loop_done != 2) 1477 if (loop_done == EVUNLOOP_ONE)
1190 loop_done = 0; 1478 loop_done = EVUNLOOP_CANCEL;
1191} 1479}
1192 1480
1193void 1481void
1194ev_unloop (EV_P_ int how) 1482ev_unloop (EV_P_ int how)
1195{ 1483{
1196 loop_done = how; 1484 loop_done = how;
1197} 1485}
1198 1486
1199/*****************************************************************************/ 1487/*****************************************************************************/
1200 1488
1201inline void 1489void inline_size
1202wlist_add (WL *head, WL elem) 1490wlist_add (WL *head, WL elem)
1203{ 1491{
1204 elem->next = *head; 1492 elem->next = *head;
1205 *head = elem; 1493 *head = elem;
1206} 1494}
1207 1495
1208inline void 1496void inline_size
1209wlist_del (WL *head, WL elem) 1497wlist_del (WL *head, WL elem)
1210{ 1498{
1211 while (*head) 1499 while (*head)
1212 { 1500 {
1213 if (*head == elem) 1501 if (*head == elem)
… …
1218 1506
1219 head = &(*head)->next; 1507 head = &(*head)->next;
1220 } 1508 }
1221} 1509}
1222 1510
1223inline void 1511void inline_speed
1224ev_clear_pending (EV_P_ W w) 1512ev_clear_pending (EV_P_ W w)
1225{ 1513{
1226 if (w->pending) 1514 if (w->pending)
1227 { 1515 {
1228 pendings [ABSPRI (w)][w->pending - 1].w = 0; 1516 pendings [ABSPRI (w)][w->pending - 1].w = 0;
1229 w->pending = 0; 1517 w->pending = 0;
1230 } 1518 }
1231} 1519}
1232 1520
1233inline void 1521void inline_speed
1234ev_start (EV_P_ W w, int active) 1522ev_start (EV_P_ W w, int active)
1235{ 1523{
1236 if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; 1524 if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
1237 if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI; 1525 if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1238 1526
1239 w->active = active; 1527 w->active = active;
1240 ev_ref (EV_A); 1528 ev_ref (EV_A);
1241} 1529}
1242 1530
1243inline void 1531void inline_size
1244ev_stop (EV_P_ W w) 1532ev_stop (EV_P_ W w)
1245{ 1533{
1246 ev_unref (EV_A); 1534 ev_unref (EV_A);
1247 w->active = 0; 1535 w->active = 0;
1248} 1536}
1249 1537
1250/*****************************************************************************/ 1538/*****************************************************************************/
1251 1539
1252void 1540void
1253ev_io_start (EV_P_ struct ev_io *w) 1541ev_io_start (EV_P_ ev_io *w)
1254{ 1542{
1255 int fd = w->fd; 1543 int fd = w->fd;
1256 1544
1257 if (ev_is_active (w)) 1545 if (expect_false (ev_is_active (w)))
1258 return; 1546 return;
1259 1547
1260 assert (("ev_io_start called with negative fd", fd >= 0)); 1548 assert (("ev_io_start called with negative fd", fd >= 0));
1261 1549
1262 ev_start (EV_A_ (W)w, 1); 1550 ev_start (EV_A_ (W)w, 1);
… …
1265 1553
1266 fd_change (EV_A_ fd); 1554 fd_change (EV_A_ fd);
1267} 1555}
1268 1556
1269void 1557void
1270ev_io_stop (EV_P_ struct ev_io *w) 1558ev_io_stop (EV_P_ ev_io *w)
1271{ 1559{
1272 ev_clear_pending (EV_A_ (W)w); 1560 ev_clear_pending (EV_A_ (W)w);
1273 if (!ev_is_active (w)) 1561 if (expect_false (!ev_is_active (w)))
1274 return; 1562 return;
1563
1564 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1275 1565
1276 wlist_del ((WL *)&anfds[w->fd].head, (WL)w); 1566 wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
1277 ev_stop (EV_A_ (W)w); 1567 ev_stop (EV_A_ (W)w);
1278 1568
1279 fd_change (EV_A_ w->fd); 1569 fd_change (EV_A_ w->fd);
1280} 1570}
1281 1571
1282void 1572void
1283ev_timer_start (EV_P_ struct ev_timer *w) 1573ev_timer_start (EV_P_ ev_timer *w)
1284{ 1574{
1285 if (ev_is_active (w)) 1575 if (expect_false (ev_is_active (w)))
1286 return; 1576 return;
1287 1577
1288 ((WT)w)->at += mn_now; 1578 ((WT)w)->at += mn_now;
1289 1579
1290 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 1580 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1291 1581
1292 ev_start (EV_A_ (W)w, ++timercnt); 1582 ev_start (EV_A_ (W)w, ++timercnt);
1293 array_needsize (struct ev_timer *, timers, timermax, timercnt, (void)); 1583 array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);
1294 timers [timercnt - 1] = w; 1584 timers [timercnt - 1] = w;
1295 upheap ((WT *)timers, timercnt - 1); 1585 upheap ((WT *)timers, timercnt - 1);
1296 1586
1587 /*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
1588}
1589
1590void
1591ev_timer_stop (EV_P_ ev_timer *w)
1592{
1593 ev_clear_pending (EV_A_ (W)w);
1594 if (expect_false (!ev_is_active (w)))
1595 return;
1596
1297 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 1597 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1298}
1299 1598
1300void 1599 {
1301ev_timer_stop (EV_P_ struct ev_timer *w) 1600 int active = ((W)w)->active;
1302{
1303 ev_clear_pending (EV_A_ (W)w);
1304 if (!ev_is_active (w))
1305 return;
1306 1601
1307 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 1602 if (expect_true (--active < --timercnt))
1308
1309 if (((W)w)->active < timercnt--)
1310 { 1603 {
1311 timers [((W)w)->active - 1] = timers [timercnt]; 1604 timers [active] = timers [timercnt];
1312 downheap ((WT *)timers, timercnt, ((W)w)->active - 1); 1605 adjustheap ((WT *)timers, timercnt, active);
1313 } 1606 }
1607 }
1314 1608
1315 ((WT)w)->at = w->repeat; 1609 ((WT)w)->at -= mn_now;
1316 1610
1317 ev_stop (EV_A_ (W)w); 1611 ev_stop (EV_A_ (W)w);
1318} 1612}
1319 1613
1320void 1614void
1321ev_timer_again (EV_P_ struct ev_timer *w) 1615ev_timer_again (EV_P_ ev_timer *w)
1322{ 1616{
1323 if (ev_is_active (w)) 1617 if (ev_is_active (w))
1324 { 1618 {
1325 if (w->repeat) 1619 if (w->repeat)
1326 { 1620 {
1327 ((WT)w)->at = mn_now + w->repeat; 1621 ((WT)w)->at = mn_now + w->repeat;
1328 downheap ((WT *)timers, timercnt, ((W)w)->active - 1); 1622 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1329 } 1623 }
1330 else 1624 else
1331 ev_timer_stop (EV_A_ w); 1625 ev_timer_stop (EV_A_ w);
1332 } 1626 }
1333 else if (w->repeat) 1627 else if (w->repeat)
1628 {
1629 w->at = w->repeat;
1334 ev_timer_start (EV_A_ w); 1630 ev_timer_start (EV_A_ w);
1631 }
1335} 1632}
1336 1633
1634#if EV_PERIODIC_ENABLE
1337void 1635void
1338ev_periodic_start (EV_P_ struct ev_periodic *w) 1636ev_periodic_start (EV_P_ ev_periodic *w)
1339{ 1637{
1340 if (ev_is_active (w)) 1638 if (expect_false (ev_is_active (w)))
1341 return; 1639 return;
1342 1640
1343 if (w->reschedule_cb) 1641 if (w->reschedule_cb)
1344 ((WT)w)->at = w->reschedule_cb (w, rt_now); 1642 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1345 else if (w->interval) 1643 else if (w->interval)
1346 { 1644 {
1347 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 1645 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1348 /* this formula differs from the one in periodic_reify because we do not always round up */ 1646 /* this formula differs from the one in periodic_reify because we do not always round up */
1349 ((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval; 1647 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
1350 } 1648 }
1351 1649
1352 ev_start (EV_A_ (W)w, ++periodiccnt); 1650 ev_start (EV_A_ (W)w, ++periodiccnt);
1353 array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void)); 1651 array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1354 periodics [periodiccnt - 1] = w; 1652 periodics [periodiccnt - 1] = w;
1355 upheap ((WT *)periodics, periodiccnt - 1); 1653 upheap ((WT *)periodics, periodiccnt - 1);
1356 1654
1655 /*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
1656}
1657
1658void
1659ev_periodic_stop (EV_P_ ev_periodic *w)
1660{
1661 ev_clear_pending (EV_A_ (W)w);
1662 if (expect_false (!ev_is_active (w)))
1663 return;
1664
1357 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1665 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1358}
1359 1666
1360void 1667 {
1361ev_periodic_stop (EV_P_ struct ev_periodic *w) 1668 int active = ((W)w)->active;
1362{
1363 ev_clear_pending (EV_A_ (W)w);
1364 if (!ev_is_active (w))
1365 return;
1366 1669
1367 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1670 if (expect_true (--active < --periodiccnt))
1368
1369 if (((W)w)->active < periodiccnt--)
1370 { 1671 {
1371 periodics [((W)w)->active - 1] = periodics [periodiccnt]; 1672 periodics [active] = periodics [periodiccnt];
1372 downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1); 1673 adjustheap ((WT *)periodics, periodiccnt, active);
1373 } 1674 }
1675 }
1374 1676
1375 ev_stop (EV_A_ (W)w); 1677 ev_stop (EV_A_ (W)w);
1376} 1678}
1377 1679
1378void 1680void
1379ev_periodic_again (EV_P_ struct ev_periodic *w) 1681ev_periodic_again (EV_P_ ev_periodic *w)
1380{ 1682{
1683 /* TODO: use adjustheap and recalculation */
1381 ev_periodic_stop (EV_A_ w); 1684 ev_periodic_stop (EV_A_ w);
1382 ev_periodic_start (EV_A_ w); 1685 ev_periodic_start (EV_A_ w);
1383} 1686}
1384 1687#endif
1385void
1386ev_idle_start (EV_P_ struct ev_idle *w)
1387{
1388 if (ev_is_active (w))
1389 return;
1390
1391 ev_start (EV_A_ (W)w, ++idlecnt);
1392 array_needsize (struct ev_idle *, idles, idlemax, idlecnt, (void));
1393 idles [idlecnt - 1] = w;
1394}
1395
1396void
1397ev_idle_stop (EV_P_ struct ev_idle *w)
1398{
1399 ev_clear_pending (EV_A_ (W)w);
1400 if (ev_is_active (w))
1401 return;
1402
1403 idles [((W)w)->active - 1] = idles [--idlecnt];
1404 ev_stop (EV_A_ (W)w);
1405}
1406
1407void
1408ev_prepare_start (EV_P_ struct ev_prepare *w)
1409{
1410 if (ev_is_active (w))
1411 return;
1412
1413 ev_start (EV_A_ (W)w, ++preparecnt);
1414 array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, (void));
1415 prepares [preparecnt - 1] = w;
1416}
1417
1418void
1419ev_prepare_stop (EV_P_ struct ev_prepare *w)
1420{
1421 ev_clear_pending (EV_A_ (W)w);
1422 if (ev_is_active (w))
1423 return;
1424
1425 prepares [((W)w)->active - 1] = prepares [--preparecnt];
1426 ev_stop (EV_A_ (W)w);
1427}
1428
1429void
1430ev_check_start (EV_P_ struct ev_check *w)
1431{
1432 if (ev_is_active (w))
1433 return;
1434
1435 ev_start (EV_A_ (W)w, ++checkcnt);
1436 array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void));
1437 checks [checkcnt - 1] = w;
1438}
1439
1440void
1441ev_check_stop (EV_P_ struct ev_check *w)
1442{
1443 ev_clear_pending (EV_A_ (W)w);
1444 if (ev_is_active (w))
1445 return;
1446
1447 checks [((W)w)->active - 1] = checks [--checkcnt];
1448 ev_stop (EV_A_ (W)w);
1449}
1450 1688
1451#ifndef SA_RESTART 1689#ifndef SA_RESTART
1452# define SA_RESTART 0 1690# define SA_RESTART 0
1453#endif 1691#endif
1454 1692
1455void 1693void
1456ev_signal_start (EV_P_ struct ev_signal *w) 1694ev_signal_start (EV_P_ ev_signal *w)
1457{ 1695{
1458#if EV_MULTIPLICITY 1696#if EV_MULTIPLICITY
1459 assert (("signal watchers are only supported in the default loop", loop == default_loop)); 1697 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1460#endif 1698#endif
1461 if (ev_is_active (w)) 1699 if (expect_false (ev_is_active (w)))
1462 return; 1700 return;
1463 1701
1464 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 1702 assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1465 1703
1466 ev_start (EV_A_ (W)w, 1); 1704 ev_start (EV_A_ (W)w, 1);
1467 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); 1705 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1468 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); 1706 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1469 1707
1470 if (!((WL)w)->next) 1708 if (!((WL)w)->next)
1471 { 1709 {
1472#if WIN32 1710#if _WIN32
1473 signal (w->signum, sighandler); 1711 signal (w->signum, sighandler);
1474#else 1712#else
1475 struct sigaction sa; 1713 struct sigaction sa;
1476 sa.sa_handler = sighandler; 1714 sa.sa_handler = sighandler;
1477 sigfillset (&sa.sa_mask); 1715 sigfillset (&sa.sa_mask);
… …
1480#endif 1718#endif
1481 } 1719 }
1482} 1720}
1483 1721
1484void 1722void
1485ev_signal_stop (EV_P_ struct ev_signal *w) 1723ev_signal_stop (EV_P_ ev_signal *w)
1486{ 1724{
1487 ev_clear_pending (EV_A_ (W)w); 1725 ev_clear_pending (EV_A_ (W)w);
1488 if (!ev_is_active (w)) 1726 if (expect_false (!ev_is_active (w)))
1489 return; 1727 return;
1490 1728
1491 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); 1729 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1492 ev_stop (EV_A_ (W)w); 1730 ev_stop (EV_A_ (W)w);
1493 1731
1494 if (!signals [w->signum - 1].head) 1732 if (!signals [w->signum - 1].head)
1495 signal (w->signum, SIG_DFL); 1733 signal (w->signum, SIG_DFL);
1496} 1734}
1497 1735
1498void 1736void
1499ev_child_start (EV_P_ struct ev_child *w) 1737ev_child_start (EV_P_ ev_child *w)
1500{ 1738{
1501#if EV_MULTIPLICITY 1739#if EV_MULTIPLICITY
1502 assert (("child watchers are only supported in the default loop", loop == default_loop)); 1740 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1503#endif 1741#endif
1504 if (ev_is_active (w)) 1742 if (expect_false (ev_is_active (w)))
1505 return; 1743 return;
1506 1744
1507 ev_start (EV_A_ (W)w, 1); 1745 ev_start (EV_A_ (W)w, 1);
1508 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1746 wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1509} 1747}
1510 1748
1511void 1749void
1512ev_child_stop (EV_P_ struct ev_child *w) 1750ev_child_stop (EV_P_ ev_child *w)
1513{ 1751{
1514 ev_clear_pending (EV_A_ (W)w); 1752 ev_clear_pending (EV_A_ (W)w);
1515 if (ev_is_active (w)) 1753 if (expect_false (!ev_is_active (w)))
1516 return; 1754 return;
1517 1755
1518 wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1756 wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1519 ev_stop (EV_A_ (W)w); 1757 ev_stop (EV_A_ (W)w);
1520} 1758}
1521 1759
1760#if EV_STAT_ENABLE
1761
1762# ifdef _WIN32
1763# undef lstat
1764# define lstat(a,b) _stati64 (a,b)
1765# endif
1766
1767#define DEF_STAT_INTERVAL 5.0074891
1768#define MIN_STAT_INTERVAL 0.1074891
1769
1770static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
1771
1772#if EV_USE_INOTIFY
1773# define EV_INOTIFY_BUFSIZE 8192
1774
1775static void noinline
1776infy_add (EV_P_ ev_stat *w)
1777{
1778 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);
1779
1780 if (w->wd < 0)
1781 {
1782 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
1783
1784 /* monitor some parent directory for speedup hints */
1785 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
1786 {
1787 char path [4096];
1788 strcpy (path, w->path);
1789
1790 do
1791 {
1792 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
1793 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
1794
1795 char *pend = strrchr (path, '/');
1796
1797 if (!pend)
1798 break; /* whoops, no '/', complain to your admin */
1799
1800 *pend = 0;
1801 w->wd = inotify_add_watch (fs_fd, path, mask);
1802 }
1803 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
1804 }
1805 }
1806 else
1807 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
1808
1809 if (w->wd >= 0)
1810 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
1811}
1812
1813static void noinline
1814infy_del (EV_P_ ev_stat *w)
1815{
1816 int slot;
1817 int wd = w->wd;
1818
1819 if (wd < 0)
1820 return;
1821
1822 w->wd = -2;
1823 slot = wd & (EV_INOTIFY_HASHSIZE - 1);
1824 wlist_del (&fs_hash [slot].head, (WL)w);
1825
1826 /* remove this watcher, if others are watching it, they will rearm */
1827 inotify_rm_watch (fs_fd, wd);
1828}
1829
1830static void noinline
1831infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
1832{
1833 if (slot < 0)
1834 /* overflow, need to check for all hahs slots */
1835 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
1836 infy_wd (EV_A_ slot, wd, ev);
1837 else
1838 {
1839 WL w_;
1840
1841 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
1842 {
1843 ev_stat *w = (ev_stat *)w_;
1844 w_ = w_->next; /* lets us remove this watcher and all before it */
1845
1846 if (w->wd == wd || wd == -1)
1847 {
1848 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
1849 {
1850 w->wd = -1;
1851 infy_add (EV_A_ w); /* re-add, no matter what */
1852 }
1853
1854 stat_timer_cb (EV_A_ &w->timer, 0);
1855 }
1856 }
1857 }
1858}
1859
1860static void
1861infy_cb (EV_P_ ev_io *w, int revents)
1862{
1863 char buf [EV_INOTIFY_BUFSIZE];
1864 struct inotify_event *ev = (struct inotify_event *)buf;
1865 int ofs;
1866 int len = read (fs_fd, buf, sizeof (buf));
1867
1868 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
1869 infy_wd (EV_A_ ev->wd, ev->wd, ev);
1870}
1871
1872void inline_size
1873infy_init (EV_P)
1874{
1875 if (fs_fd != -2)
1876 return;
1877
1878 fs_fd = inotify_init ();
1879
1880 if (fs_fd >= 0)
1881 {
1882 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
1883 ev_set_priority (&fs_w, EV_MAXPRI);
1884 ev_io_start (EV_A_ &fs_w);
1885 }
1886}
1887
1888void inline_size
1889infy_fork (EV_P)
1890{
1891 int slot;
1892
1893 if (fs_fd < 0)
1894 return;
1895
1896 close (fs_fd);
1897 fs_fd = inotify_init ();
1898
1899 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
1900 {
1901 WL w_ = fs_hash [slot].head;
1902 fs_hash [slot].head = 0;
1903
1904 while (w_)
1905 {
1906 ev_stat *w = (ev_stat *)w_;
1907 w_ = w_->next; /* lets us add this watcher */
1908
1909 w->wd = -1;
1910
1911 if (fs_fd >= 0)
1912 infy_add (EV_A_ w); /* re-add, no matter what */
1913 else
1914 ev_timer_start (EV_A_ &w->timer);
1915 }
1916
1917 }
1918}
1919
1920#endif
1921
1922void
1923ev_stat_stat (EV_P_ ev_stat *w)
1924{
1925 if (lstat (w->path, &w->attr) < 0)
1926 w->attr.st_nlink = 0;
1927 else if (!w->attr.st_nlink)
1928 w->attr.st_nlink = 1;
1929}
1930
1931static void noinline
1932stat_timer_cb (EV_P_ ev_timer *w_, int revents)
1933{
1934 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
1935
1936 /* we copy this here each the time so that */
1937 /* prev has the old value when the callback gets invoked */
1938 w->prev = w->attr;
1939 ev_stat_stat (EV_A_ w);
1940
1941 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
1942 if (
1943 w->prev.st_dev != w->attr.st_dev
1944 || w->prev.st_ino != w->attr.st_ino
1945 || w->prev.st_mode != w->attr.st_mode
1946 || w->prev.st_nlink != w->attr.st_nlink
1947 || w->prev.st_uid != w->attr.st_uid
1948 || w->prev.st_gid != w->attr.st_gid
1949 || w->prev.st_rdev != w->attr.st_rdev
1950 || w->prev.st_size != w->attr.st_size
1951 || w->prev.st_atime != w->attr.st_atime
1952 || w->prev.st_mtime != w->attr.st_mtime
1953 || w->prev.st_ctime != w->attr.st_ctime
1954 ) {
1955 #if EV_USE_INOTIFY
1956 infy_del (EV_A_ w);
1957 infy_add (EV_A_ w);
1958 ev_stat_stat (EV_A_ w); /* avoid race... */
1959 #endif
1960
1961 ev_feed_event (EV_A_ w, EV_STAT);
1962 }
1963}
1964
1965void
1966ev_stat_start (EV_P_ ev_stat *w)
1967{
1968 if (expect_false (ev_is_active (w)))
1969 return;
1970
1971 /* since we use memcmp, we need to clear any padding data etc. */
1972 memset (&w->prev, 0, sizeof (ev_statdata));
1973 memset (&w->attr, 0, sizeof (ev_statdata));
1974
1975 ev_stat_stat (EV_A_ w);
1976
1977 if (w->interval < MIN_STAT_INTERVAL)
1978 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
1979
1980 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
1981 ev_set_priority (&w->timer, ev_priority (w));
1982
1983#if EV_USE_INOTIFY
1984 infy_init (EV_A);
1985
1986 if (fs_fd >= 0)
1987 infy_add (EV_A_ w);
1988 else
1989#endif
1990 ev_timer_start (EV_A_ &w->timer);
1991
1992 ev_start (EV_A_ (W)w, 1);
1993}
1994
1995void
1996ev_stat_stop (EV_P_ ev_stat *w)
1997{
1998 ev_clear_pending (EV_A_ (W)w);
1999 if (expect_false (!ev_is_active (w)))
2000 return;
2001
2002#if EV_USE_INOTIFY
2003 infy_del (EV_A_ w);
2004#endif
2005 ev_timer_stop (EV_A_ &w->timer);
2006
2007 ev_stop (EV_A_ (W)w);
2008}
2009#endif
2010
2011void
2012ev_idle_start (EV_P_ ev_idle *w)
2013{
2014 if (expect_false (ev_is_active (w)))
2015 return;
2016
2017 ev_start (EV_A_ (W)w, ++idlecnt);
2018 array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2);
2019 idles [idlecnt - 1] = w;
2020}
2021
2022void
2023ev_idle_stop (EV_P_ ev_idle *w)
2024{
2025 ev_clear_pending (EV_A_ (W)w);
2026 if (expect_false (!ev_is_active (w)))
2027 return;
2028
2029 {
2030 int active = ((W)w)->active;
2031 idles [active - 1] = idles [--idlecnt];
2032 ((W)idles [active - 1])->active = active;
2033 }
2034
2035 ev_stop (EV_A_ (W)w);
2036}
2037
2038void
2039ev_prepare_start (EV_P_ ev_prepare *w)
2040{
2041 if (expect_false (ev_is_active (w)))
2042 return;
2043
2044 ev_start (EV_A_ (W)w, ++preparecnt);
2045 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2046 prepares [preparecnt - 1] = w;
2047}
2048
2049void
2050ev_prepare_stop (EV_P_ ev_prepare *w)
2051{
2052 ev_clear_pending (EV_A_ (W)w);
2053 if (expect_false (!ev_is_active (w)))
2054 return;
2055
2056 {
2057 int active = ((W)w)->active;
2058 prepares [active - 1] = prepares [--preparecnt];
2059 ((W)prepares [active - 1])->active = active;
2060 }
2061
2062 ev_stop (EV_A_ (W)w);
2063}
2064
2065void
2066ev_check_start (EV_P_ ev_check *w)
2067{
2068 if (expect_false (ev_is_active (w)))
2069 return;
2070
2071 ev_start (EV_A_ (W)w, ++checkcnt);
2072 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2073 checks [checkcnt - 1] = w;
2074}
2075
2076void
2077ev_check_stop (EV_P_ ev_check *w)
2078{
2079 ev_clear_pending (EV_A_ (W)w);
2080 if (expect_false (!ev_is_active (w)))
2081 return;
2082
2083 {
2084 int active = ((W)w)->active;
2085 checks [active - 1] = checks [--checkcnt];
2086 ((W)checks [active - 1])->active = active;
2087 }
2088
2089 ev_stop (EV_A_ (W)w);
2090}
2091
2092#if EV_EMBED_ENABLE
2093void noinline
2094ev_embed_sweep (EV_P_ ev_embed *w)
2095{
2096 ev_loop (w->loop, EVLOOP_NONBLOCK);
2097}
2098
2099static void
2100embed_cb (EV_P_ ev_io *io, int revents)
2101{
2102 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2103
2104 if (ev_cb (w))
2105 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2106 else
2107 ev_embed_sweep (loop, w);
2108}
2109
2110void
2111ev_embed_start (EV_P_ ev_embed *w)
2112{
2113 if (expect_false (ev_is_active (w)))
2114 return;
2115
2116 {
2117 struct ev_loop *loop = w->loop;
2118 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2119 ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
2120 }
2121
2122 ev_set_priority (&w->io, ev_priority (w));
2123 ev_io_start (EV_A_ &w->io);
2124
2125 ev_start (EV_A_ (W)w, 1);
2126}
2127
2128void
2129ev_embed_stop (EV_P_ ev_embed *w)
2130{
2131 ev_clear_pending (EV_A_ (W)w);
2132 if (expect_false (!ev_is_active (w)))
2133 return;
2134
2135 ev_io_stop (EV_A_ &w->io);
2136
2137 ev_stop (EV_A_ (W)w);
2138}
2139#endif
2140
2141#if EV_FORK_ENABLE
2142void
2143ev_fork_start (EV_P_ ev_fork *w)
2144{
2145 if (expect_false (ev_is_active (w)))
2146 return;
2147
2148 ev_start (EV_A_ (W)w, ++forkcnt);
2149 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2150 forks [forkcnt - 1] = w;
2151}
2152
2153void
2154ev_fork_stop (EV_P_ ev_fork *w)
2155{
2156 ev_clear_pending (EV_A_ (W)w);
2157 if (expect_false (!ev_is_active (w)))
2158 return;
2159
2160 {
2161 int active = ((W)w)->active;
2162 forks [active - 1] = forks [--forkcnt];
2163 ((W)forks [active - 1])->active = active;
2164 }
2165
2166 ev_stop (EV_A_ (W)w);
2167}
2168#endif
2169
1522/*****************************************************************************/ 2170/*****************************************************************************/
1523 2171
1524struct ev_once 2172struct ev_once
1525{ 2173{
1526 struct ev_io io; 2174 ev_io io;
1527 struct ev_timer to; 2175 ev_timer to;
1528 void (*cb)(int revents, void *arg); 2176 void (*cb)(int revents, void *arg);
1529 void *arg; 2177 void *arg;
1530}; 2178};
1531 2179
1532static void 2180static void
… …
1541 2189
1542 cb (revents, arg); 2190 cb (revents, arg);
1543} 2191}
1544 2192
1545static void 2193static void
1546once_cb_io (EV_P_ struct ev_io *w, int revents) 2194once_cb_io (EV_P_ ev_io *w, int revents)
1547{ 2195{
1548 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 2196 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1549} 2197}
1550 2198
1551static void 2199static void
1552once_cb_to (EV_P_ struct ev_timer *w, int revents) 2200once_cb_to (EV_P_ ev_timer *w, int revents)
1553{ 2201{
1554 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 2202 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1555} 2203}
1556 2204
1557void 2205void
1558ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 2206ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1559{ 2207{
1560 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 2208 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1561 2209
1562 if (!once) 2210 if (expect_false (!once))
2211 {
1563 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 2212 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1564 else 2213 return;
1565 { 2214 }
2215
1566 once->cb = cb; 2216 once->cb = cb;
1567 once->arg = arg; 2217 once->arg = arg;
1568 2218
1569 ev_init (&once->io, once_cb_io); 2219 ev_init (&once->io, once_cb_io);
1570 if (fd >= 0) 2220 if (fd >= 0)
1571 { 2221 {
1572 ev_io_set (&once->io, fd, events); 2222 ev_io_set (&once->io, fd, events);
1573 ev_io_start (EV_A_ &once->io); 2223 ev_io_start (EV_A_ &once->io);
1574 } 2224 }
1575 2225
1576 ev_init (&once->to, once_cb_to); 2226 ev_init (&once->to, once_cb_to);
1577 if (timeout >= 0.) 2227 if (timeout >= 0.)
1578 { 2228 {
1579 ev_timer_set (&once->to, timeout, 0.); 2229 ev_timer_set (&once->to, timeout, 0.);
1580 ev_timer_start (EV_A_ &once->to); 2230 ev_timer_start (EV_A_ &once->to);
1581 }
1582 } 2231 }
1583} 2232}
1584 2233
2234#ifdef __cplusplus
2235}
2236#endif
2237

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