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Comparing libev/ev.c (file contents):
Revision 1.84 by root, Fri Nov 9 23:04:35 2007 UTC vs.
Revision 1.166 by root, Sat Dec 8 03:53:36 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)w)->priority - EV_MINPRI)
150 247
248#define EMPTY /* 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
523inline void 667void inline_size
524adjustheap (WT *heap, int N, int k, ev_tstamp at) 668adjustheap (WT *heap, int N, int k)
525{ 669{
526 ev_tstamp old_at = heap [k]->at; 670 upheap (heap, k);
527 heap [k]->at = at;
528
529 if (old_at < at)
530 downheap (heap, N, k); 671 downheap (heap, N, k);
531 else
532 upheap (heap, k);
533} 672}
534 673
535/*****************************************************************************/ 674/*****************************************************************************/
536 675
537typedef struct 676typedef struct
… …
543static ANSIG *signals; 682static ANSIG *signals;
544static int signalmax; 683static int signalmax;
545 684
546static int sigpipe [2]; 685static int sigpipe [2];
547static sig_atomic_t volatile gotsig; 686static sig_atomic_t volatile gotsig;
548static struct ev_io sigev; 687static ev_io sigev;
549 688
550static void 689void inline_size
551signals_init (ANSIG *base, int count) 690signals_init (ANSIG *base, int count)
552{ 691{
553 while (count--) 692 while (count--)
554 { 693 {
555 base->head = 0; 694 base->head = 0;
… …
560} 699}
561 700
562static void 701static void
563sighandler (int signum) 702sighandler (int signum)
564{ 703{
565#if WIN32 704#if _WIN32
566 signal (signum, sighandler); 705 signal (signum, sighandler);
567#endif 706#endif
568 707
569 signals [signum - 1].gotsig = 1; 708 signals [signum - 1].gotsig = 1;
570 709
571 if (!gotsig) 710 if (!gotsig)
572 { 711 {
573 int old_errno = errno; 712 int old_errno = errno;
574 gotsig = 1; 713 gotsig = 1;
575#ifdef WIN32
576 send (sigpipe [1], &signum, 1, MSG_DONTWAIT);
577#else
578 write (sigpipe [1], &signum, 1); 714 write (sigpipe [1], &signum, 1);
579#endif
580 errno = old_errno; 715 errno = old_errno;
581 } 716 }
582} 717}
583 718
584void 719void noinline
585ev_feed_signal_event (EV_P_ int signum) 720ev_feed_signal_event (EV_P_ int signum)
586{ 721{
587 WL w; 722 WL w;
588 723
589#if EV_MULTIPLICITY 724#if EV_MULTIPLICITY
590 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));
591#endif 726#endif
592 727
593 --signum; 728 --signum;
594 729
595 if (signum < 0 || signum >= signalmax) 730 if (signum < 0 || signum >= signalmax)
… …
600 for (w = signals [signum].head; w; w = w->next) 735 for (w = signals [signum].head; w; w = w->next)
601 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 736 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
602} 737}
603 738
604static void 739static void
605sigcb (EV_P_ struct ev_io *iow, int revents) 740sigcb (EV_P_ ev_io *iow, int revents)
606{ 741{
607 int signum; 742 int signum;
608 743
609#ifdef WIN32
610 recv (sigpipe [0], &revents, 1, MSG_DONTWAIT);
611#else
612 read (sigpipe [0], &revents, 1); 744 read (sigpipe [0], &revents, 1);
613#endif
614 gotsig = 0; 745 gotsig = 0;
615 746
616 for (signum = signalmax; signum--; ) 747 for (signum = signalmax; signum--; )
617 if (signals [signum].gotsig) 748 if (signals [signum].gotsig)
618 ev_feed_signal_event (EV_A_ signum + 1); 749 ev_feed_signal_event (EV_A_ signum + 1);
619} 750}
620 751
621static 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
622siginit (EV_P) 765siginit (EV_P)
623{ 766{
624#ifndef WIN32 767 fd_intern (sigpipe [0]);
625 fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC); 768 fd_intern (sigpipe [1]);
626 fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
627
628 /* rather than sort out wether we really need nb, set it */
629 fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
630 fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
631#endif
632 769
633 ev_io_set (&sigev, sigpipe [0], EV_READ); 770 ev_io_set (&sigev, sigpipe [0], EV_READ);
634 ev_io_start (EV_A_ &sigev); 771 ev_io_start (EV_A_ &sigev);
635 ev_unref (EV_A); /* child watcher should not keep loop alive */ 772 ev_unref (EV_A); /* child watcher should not keep loop alive */
636} 773}
637 774
638/*****************************************************************************/ 775/*****************************************************************************/
639 776
640static struct ev_child *childs [PID_HASHSIZE]; 777static ev_child *childs [EV_PID_HASHSIZE];
641 778
642#ifndef WIN32 779#ifndef _WIN32
643 780
644static struct ev_signal childev; 781static ev_signal childev;
782
783void inline_speed
784child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
785{
786 ev_child *w;
787
788 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
789 if (w->pid == pid || !w->pid)
790 {
791 ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */
792 w->rpid = pid;
793 w->rstatus = status;
794 ev_feed_event (EV_A_ (W)w, EV_CHILD);
795 }
796}
645 797
646#ifndef WCONTINUED 798#ifndef WCONTINUED
647# define WCONTINUED 0 799# define WCONTINUED 0
648#endif 800#endif
649 801
650static void 802static void
651child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
652{
653 struct ev_child *w;
654
655 for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
656 if (w->pid == pid || !w->pid)
657 {
658 ev_priority (w) = ev_priority (sw); /* need to do it *now* */
659 w->rpid = pid;
660 w->rstatus = status;
661 ev_feed_event (EV_A_ (W)w, EV_CHILD);
662 }
663}
664
665static void
666childcb (EV_P_ struct ev_signal *sw, int revents) 803childcb (EV_P_ ev_signal *sw, int revents)
667{ 804{
668 int pid, status; 805 int pid, status;
669 806
807 /* some systems define WCONTINUED but then fail to support it (linux 2.4) */
670 if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) 808 if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
671 { 809 if (!WCONTINUED
810 || errno != EINVAL
811 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
812 return;
813
672 /* 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 */
673 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 816 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
674 817
675 child_reap (EV_A_ sw, pid, pid, status); 818 child_reap (EV_A_ sw, pid, pid, status);
819 if (EV_PID_HASHSIZE > 1)
676 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 */
677 }
678} 821}
679 822
680#endif 823#endif
681 824
682/*****************************************************************************/ 825/*****************************************************************************/
683 826
827#if EV_USE_PORT
828# include "ev_port.c"
829#endif
684#if EV_USE_KQUEUE 830#if EV_USE_KQUEUE
685# include "ev_kqueue.c" 831# include "ev_kqueue.c"
686#endif 832#endif
687#if EV_USE_EPOLL 833#if EV_USE_EPOLL
688# include "ev_epoll.c" 834# include "ev_epoll.c"
… …
705{ 851{
706 return EV_VERSION_MINOR; 852 return EV_VERSION_MINOR;
707} 853}
708 854
709/* 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 */
710static int 856int inline_size
711enable_secure (void) 857enable_secure (void)
712{ 858{
713#ifdef WIN32 859#ifdef _WIN32
714 return 0; 860 return 0;
715#else 861#else
716 return getuid () != geteuid () 862 return getuid () != geteuid ()
717 || getgid () != getegid (); 863 || getgid () != getegid ();
718#endif 864#endif
719} 865}
720 866
721int 867unsigned int
722ev_method (EV_P) 868ev_supported_backends (void)
723{ 869{
724 return method; 870 unsigned int flags = 0;
725}
726 871
727static void 872 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
728loop_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)
729{ 883{
730 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)
731 { 923 {
732#if EV_USE_MONOTONIC 924#if EV_USE_MONOTONIC
733 { 925 {
734 struct timespec ts; 926 struct timespec ts;
735 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 927 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
736 have_monotonic = 1; 928 have_monotonic = 1;
737 } 929 }
738#endif 930#endif
739 931
740 rt_now = ev_time (); 932 ev_rt_now = ev_time ();
741 mn_now = get_clock (); 933 mn_now = get_clock ();
742 now_floor = mn_now; 934 now_floor = mn_now;
743 rtmn_diff = rt_now - mn_now; 935 rtmn_diff = ev_rt_now - mn_now;
744 936
745 if (methods == EVMETHOD_AUTO) 937 /* pid check not overridable via env */
746 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"))
747 methods = atoi (getenv ("LIBEV_METHODS")); 946 flags = atoi (getenv ("LIBEV_FLAGS"));
748 else
749 methods = EVMETHOD_ANY;
750 947
751 method = 0; 948 if (!(flags & 0x0000ffffUL))
949 flags |= ev_recommended_backends ();
950
951 backend = 0;
952 backend_fd = -1;
752#if EV_USE_WIN32 953#if EV_USE_INOTIFY
753 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);
754#endif 959#endif
755#if EV_USE_KQUEUE 960#if EV_USE_KQUEUE
756 if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods); 961 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
757#endif 962#endif
758#if EV_USE_EPOLL 963#if EV_USE_EPOLL
759 if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods); 964 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
760#endif 965#endif
761#if EV_USE_POLL 966#if EV_USE_POLL
762 if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods); 967 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
763#endif 968#endif
764#if EV_USE_SELECT 969#if EV_USE_SELECT
765 if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods); 970 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
766#endif 971#endif
767 972
768 ev_init (&sigev, sigcb); 973 ev_init (&sigev, sigcb);
769 ev_set_priority (&sigev, EV_MAXPRI); 974 ev_set_priority (&sigev, EV_MAXPRI);
770 } 975 }
771} 976}
772 977
773void 978static void noinline
774loop_destroy (EV_P) 979loop_destroy (EV_P)
775{ 980{
776 int i; 981 int i;
777 982
778#if EV_USE_WIN32 983#if EV_USE_INOTIFY
779 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);
780#endif 993#endif
781#if EV_USE_KQUEUE 994#if EV_USE_KQUEUE
782 if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A); 995 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
783#endif 996#endif
784#if EV_USE_EPOLL 997#if EV_USE_EPOLL
785 if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A); 998 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
786#endif 999#endif
787#if EV_USE_POLL 1000#if EV_USE_POLL
788 if (method == EVMETHOD_POLL ) poll_destroy (EV_A); 1001 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
789#endif 1002#endif
790#if EV_USE_SELECT 1003#if EV_USE_SELECT
791 if (method == EVMETHOD_SELECT) select_destroy (EV_A); 1004 if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
792#endif 1005#endif
793 1006
794 for (i = NUMPRI; i--; ) 1007 for (i = NUMPRI; i--; )
1008 {
795 array_free (pending, [i]); 1009 array_free (pending, [i]);
1010#if EV_IDLE_ENABLE
1011 array_free (idle, [i]);
1012#endif
1013 }
796 1014
797 /* have to use the microsoft-never-gets-it-right macro */ 1015 /* have to use the microsoft-never-gets-it-right macro */
798 array_free_microshit (fdchange); 1016 array_free (fdchange, EMPTY);
799 array_free_microshit (timer); 1017 array_free (timer, EMPTY);
800 array_free_microshit (periodic); 1018#if EV_PERIODIC_ENABLE
801 array_free_microshit (idle); 1019 array_free (periodic, EMPTY);
802 array_free_microshit (prepare); 1020#endif
803 array_free_microshit (check); 1021 array_free (prepare, EMPTY);
1022 array_free (check, EMPTY);
804 1023
805 method = 0; 1024 backend = 0;
806} 1025}
807 1026
808static void 1027void inline_size infy_fork (EV_P);
1028
1029void inline_size
809loop_fork (EV_P) 1030loop_fork (EV_P)
810{ 1031{
1032#if EV_USE_PORT
1033 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1034#endif
1035#if EV_USE_KQUEUE
1036 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
1037#endif
811#if EV_USE_EPOLL 1038#if EV_USE_EPOLL
812 if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A); 1039 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
813#endif 1040#endif
814#if EV_USE_KQUEUE 1041#if EV_USE_INOTIFY
815 if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A); 1042 infy_fork (EV_A);
816#endif 1043#endif
817 1044
818 if (ev_is_active (&sigev)) 1045 if (ev_is_active (&sigev))
819 { 1046 {
820 /* default loop */ 1047 /* default loop */
… …
833 postfork = 0; 1060 postfork = 0;
834} 1061}
835 1062
836#if EV_MULTIPLICITY 1063#if EV_MULTIPLICITY
837struct ev_loop * 1064struct ev_loop *
838ev_loop_new (int methods) 1065ev_loop_new (unsigned int flags)
839{ 1066{
840 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 1067 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
841 1068
842 memset (loop, 0, sizeof (struct ev_loop)); 1069 memset (loop, 0, sizeof (struct ev_loop));
843 1070
844 loop_init (EV_A_ methods); 1071 loop_init (EV_A_ flags);
845 1072
846 if (ev_method (EV_A)) 1073 if (ev_backend (EV_A))
847 return loop; 1074 return loop;
848 1075
849 return 0; 1076 return 0;
850} 1077}
851 1078
… …
864 1091
865#endif 1092#endif
866 1093
867#if EV_MULTIPLICITY 1094#if EV_MULTIPLICITY
868struct ev_loop * 1095struct ev_loop *
1096ev_default_loop_init (unsigned int flags)
869#else 1097#else
870int 1098int
1099ev_default_loop (unsigned int flags)
871#endif 1100#endif
872ev_default_loop (int methods)
873{ 1101{
874 if (sigpipe [0] == sigpipe [1]) 1102 if (sigpipe [0] == sigpipe [1])
875 if (pipe (sigpipe)) 1103 if (pipe (sigpipe))
876 return 0; 1104 return 0;
877 1105
878 if (!default_loop) 1106 if (!ev_default_loop_ptr)
879 { 1107 {
880#if EV_MULTIPLICITY 1108#if EV_MULTIPLICITY
881 struct ev_loop *loop = default_loop = &default_loop_struct; 1109 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
882#else 1110#else
883 default_loop = 1; 1111 ev_default_loop_ptr = 1;
884#endif 1112#endif
885 1113
886 loop_init (EV_A_ methods); 1114 loop_init (EV_A_ flags);
887 1115
888 if (ev_method (EV_A)) 1116 if (ev_backend (EV_A))
889 { 1117 {
890 siginit (EV_A); 1118 siginit (EV_A);
891 1119
892#ifndef WIN32 1120#ifndef _WIN32
893 ev_signal_init (&childev, childcb, SIGCHLD); 1121 ev_signal_init (&childev, childcb, SIGCHLD);
894 ev_set_priority (&childev, EV_MAXPRI); 1122 ev_set_priority (&childev, EV_MAXPRI);
895 ev_signal_start (EV_A_ &childev); 1123 ev_signal_start (EV_A_ &childev);
896 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1124 ev_unref (EV_A); /* child watcher should not keep loop alive */
897#endif 1125#endif
898 } 1126 }
899 else 1127 else
900 default_loop = 0; 1128 ev_default_loop_ptr = 0;
901 } 1129 }
902 1130
903 return default_loop; 1131 return ev_default_loop_ptr;
904} 1132}
905 1133
906void 1134void
907ev_default_destroy (void) 1135ev_default_destroy (void)
908{ 1136{
909#if EV_MULTIPLICITY 1137#if EV_MULTIPLICITY
910 struct ev_loop *loop = default_loop; 1138 struct ev_loop *loop = ev_default_loop_ptr;
911#endif 1139#endif
912 1140
913#ifndef WIN32 1141#ifndef _WIN32
914 ev_ref (EV_A); /* child watcher */ 1142 ev_ref (EV_A); /* child watcher */
915 ev_signal_stop (EV_A_ &childev); 1143 ev_signal_stop (EV_A_ &childev);
916#endif 1144#endif
917 1145
918 ev_ref (EV_A); /* signal watcher */ 1146 ev_ref (EV_A); /* signal watcher */
… …
926 1154
927void 1155void
928ev_default_fork (void) 1156ev_default_fork (void)
929{ 1157{
930#if EV_MULTIPLICITY 1158#if EV_MULTIPLICITY
931 struct ev_loop *loop = default_loop; 1159 struct ev_loop *loop = ev_default_loop_ptr;
932#endif 1160#endif
933 1161
934 if (method) 1162 if (backend)
935 postfork = 1; 1163 postfork = 1;
936} 1164}
937 1165
938/*****************************************************************************/ 1166/*****************************************************************************/
939 1167
940static int 1168void inline_speed
941any_pending (EV_P)
942{
943 int pri;
944
945 for (pri = NUMPRI; pri--; )
946 if (pendingcnt [pri])
947 return 1;
948
949 return 0;
950}
951
952static void
953call_pending (EV_P) 1169call_pending (EV_P)
954{ 1170{
955 int pri; 1171 int pri;
956 1172
957 for (pri = NUMPRI; pri--; ) 1173 for (pri = NUMPRI; pri--; )
958 while (pendingcnt [pri]) 1174 while (pendingcnt [pri])
959 { 1175 {
960 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 1176 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
961 1177
962 if (p->w) 1178 if (expect_true (p->w))
963 { 1179 {
1180 /*assert (("non-pending watcher on pending list", p->w->pending));*/
1181
964 p->w->pending = 0; 1182 p->w->pending = 0;
965 EV_CB_INVOKE (p->w, p->events); 1183 EV_CB_INVOKE (p->w, p->events);
966 } 1184 }
967 } 1185 }
968} 1186}
969 1187
970static void 1188void inline_size
971timers_reify (EV_P) 1189timers_reify (EV_P)
972{ 1190{
973 while (timercnt && ((WT)timers [0])->at <= mn_now) 1191 while (timercnt && ((WT)timers [0])->at <= mn_now)
974 { 1192 {
975 struct ev_timer *w = timers [0]; 1193 ev_timer *w = timers [0];
976 1194
977 assert (("inactive timer on timer heap detected", ev_is_active (w))); 1195 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
978 1196
979 /* first reschedule or stop timer */ 1197 /* first reschedule or stop timer */
980 if (w->repeat) 1198 if (w->repeat)
981 { 1199 {
982 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 1200 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1201
983 ((WT)w)->at = mn_now + w->repeat; 1202 ((WT)w)->at += w->repeat;
1203 if (((WT)w)->at < mn_now)
1204 ((WT)w)->at = mn_now;
1205
984 downheap ((WT *)timers, timercnt, 0); 1206 downheap ((WT *)timers, timercnt, 0);
985 } 1207 }
986 else 1208 else
987 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ 1209 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
988 1210
989 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); 1211 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
990 } 1212 }
991} 1213}
992 1214
993static void 1215#if EV_PERIODIC_ENABLE
1216void inline_size
994periodics_reify (EV_P) 1217periodics_reify (EV_P)
995{ 1218{
996 while (periodiccnt && ((WT)periodics [0])->at <= rt_now) 1219 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
997 { 1220 {
998 struct ev_periodic *w = periodics [0]; 1221 ev_periodic *w = periodics [0];
999 1222
1000 assert (("inactive timer on periodic heap detected", ev_is_active (w))); 1223 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1001 1224
1002 /* first reschedule or stop timer */ 1225 /* first reschedule or stop timer */
1003 if (w->reschedule_cb) 1226 if (w->reschedule_cb)
1004 { 1227 {
1005 ev_tstamp at = ((WT)w)->at = w->reschedule_cb (w, rt_now + 0.0001); 1228 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
1006
1007 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > rt_now)); 1229 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1008 downheap ((WT *)periodics, periodiccnt, 0); 1230 downheap ((WT *)periodics, periodiccnt, 0);
1009 } 1231 }
1010 else if (w->interval) 1232 else if (w->interval)
1011 { 1233 {
1012 ((WT)w)->at += floor ((rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval; 1234 ((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
1013 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > rt_now)); 1235 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1014 downheap ((WT *)periodics, periodiccnt, 0); 1236 downheap ((WT *)periodics, periodiccnt, 0);
1015 } 1237 }
1016 else 1238 else
1017 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 1239 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1018 1240
1019 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 1241 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1020 } 1242 }
1021} 1243}
1022 1244
1023static void 1245static void noinline
1024periodics_reschedule (EV_P) 1246periodics_reschedule (EV_P)
1025{ 1247{
1026 int i; 1248 int i;
1027 1249
1028 /* adjust periodics after time jump */ 1250 /* adjust periodics after time jump */
1029 for (i = 0; i < periodiccnt; ++i) 1251 for (i = 0; i < periodiccnt; ++i)
1030 { 1252 {
1031 struct ev_periodic *w = periodics [i]; 1253 ev_periodic *w = periodics [i];
1032 1254
1033 if (w->reschedule_cb) 1255 if (w->reschedule_cb)
1034 ((WT)w)->at = w->reschedule_cb (w, rt_now); 1256 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1035 else if (w->interval) 1257 else if (w->interval)
1036 ((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval; 1258 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
1037 } 1259 }
1038 1260
1039 /* now rebuild the heap */ 1261 /* now rebuild the heap */
1040 for (i = periodiccnt >> 1; i--; ) 1262 for (i = periodiccnt >> 1; i--; )
1041 downheap ((WT *)periodics, periodiccnt, i); 1263 downheap ((WT *)periodics, periodiccnt, i);
1042} 1264}
1265#endif
1043 1266
1044inline int 1267#if EV_IDLE_ENABLE
1268void inline_size
1269idle_reify (EV_P)
1270{
1271 if (expect_false (idleall))
1272 {
1273 int pri;
1274
1275 for (pri = NUMPRI; pri--; )
1276 {
1277 if (pendingcnt [pri])
1278 break;
1279
1280 if (idlecnt [pri])
1281 {
1282 queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
1283 break;
1284 }
1285 }
1286 }
1287}
1288#endif
1289
1290int inline_size
1045time_update_monotonic (EV_P) 1291time_update_monotonic (EV_P)
1046{ 1292{
1047 mn_now = get_clock (); 1293 mn_now = get_clock ();
1048 1294
1049 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 1295 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1050 { 1296 {
1051 rt_now = rtmn_diff + mn_now; 1297 ev_rt_now = rtmn_diff + mn_now;
1052 return 0; 1298 return 0;
1053 } 1299 }
1054 else 1300 else
1055 { 1301 {
1056 now_floor = mn_now; 1302 now_floor = mn_now;
1057 rt_now = ev_time (); 1303 ev_rt_now = ev_time ();
1058 return 1; 1304 return 1;
1059 } 1305 }
1060} 1306}
1061 1307
1062static void 1308void inline_size
1063time_update (EV_P) 1309time_update (EV_P)
1064{ 1310{
1065 int i; 1311 int i;
1066 1312
1067#if EV_USE_MONOTONIC 1313#if EV_USE_MONOTONIC
… …
1069 { 1315 {
1070 if (time_update_monotonic (EV_A)) 1316 if (time_update_monotonic (EV_A))
1071 { 1317 {
1072 ev_tstamp odiff = rtmn_diff; 1318 ev_tstamp odiff = rtmn_diff;
1073 1319
1074 for (i = 4; --i; ) /* loop a few times, before making important decisions */ 1320 /* loop a few times, before making important decisions.
1321 * on the choice of "4": one iteration isn't enough,
1322 * in case we get preempted during the calls to
1323 * ev_time and get_clock. a second call is almost guaranteed
1324 * to succeed in that case, though. and looping a few more times
1325 * doesn't hurt either as we only do this on time-jumps or
1326 * in the unlikely event of having been preempted here.
1327 */
1328 for (i = 4; --i; )
1075 { 1329 {
1076 rtmn_diff = rt_now - mn_now; 1330 rtmn_diff = ev_rt_now - mn_now;
1077 1331
1078 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) 1332 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1079 return; /* all is well */ 1333 return; /* all is well */
1080 1334
1081 rt_now = ev_time (); 1335 ev_rt_now = ev_time ();
1082 mn_now = get_clock (); 1336 mn_now = get_clock ();
1083 now_floor = mn_now; 1337 now_floor = mn_now;
1084 } 1338 }
1085 1339
1340# if EV_PERIODIC_ENABLE
1086 periodics_reschedule (EV_A); 1341 periodics_reschedule (EV_A);
1342# endif
1087 /* no timer adjustment, as the monotonic clock doesn't jump */ 1343 /* no timer adjustment, as the monotonic clock doesn't jump */
1088 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */ 1344 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1089 } 1345 }
1090 } 1346 }
1091 else 1347 else
1092#endif 1348#endif
1093 { 1349 {
1094 rt_now = ev_time (); 1350 ev_rt_now = ev_time ();
1095 1351
1096 if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP)) 1352 if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
1097 { 1353 {
1354#if EV_PERIODIC_ENABLE
1098 periodics_reschedule (EV_A); 1355 periodics_reschedule (EV_A);
1356#endif
1099 1357
1100 /* adjust timers. this is easy, as the offset is the same for all */ 1358 /* adjust timers. this is easy, as the offset is the same for all of them */
1101 for (i = 0; i < timercnt; ++i) 1359 for (i = 0; i < timercnt; ++i)
1102 ((WT)timers [i])->at += rt_now - mn_now; 1360 ((WT)timers [i])->at += ev_rt_now - mn_now;
1103 } 1361 }
1104 1362
1105 mn_now = rt_now; 1363 mn_now = ev_rt_now;
1106 } 1364 }
1107} 1365}
1108 1366
1109void 1367void
1110ev_ref (EV_P) 1368ev_ref (EV_P)
… …
1121static int loop_done; 1379static int loop_done;
1122 1380
1123void 1381void
1124ev_loop (EV_P_ int flags) 1382ev_loop (EV_P_ int flags)
1125{ 1383{
1126 double block;
1127 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0; 1384 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
1385 ? EVUNLOOP_ONE
1386 : EVUNLOOP_CANCEL;
1387
1388 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
1128 1389
1129 do 1390 do
1130 { 1391 {
1392#ifndef _WIN32
1393 if (expect_false (curpid)) /* penalise the forking check even more */
1394 if (expect_false (getpid () != curpid))
1395 {
1396 curpid = getpid ();
1397 postfork = 1;
1398 }
1399#endif
1400
1401#if EV_FORK_ENABLE
1402 /* we might have forked, so queue fork handlers */
1403 if (expect_false (postfork))
1404 if (forkcnt)
1405 {
1406 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1407 call_pending (EV_A);
1408 }
1409#endif
1410
1131 /* queue check watchers (and execute them) */ 1411 /* queue check watchers (and execute them) */
1132 if (expect_false (preparecnt)) 1412 if (expect_false (preparecnt))
1133 { 1413 {
1134 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 1414 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1135 call_pending (EV_A); 1415 call_pending (EV_A);
1136 } 1416 }
1137 1417
1418 if (expect_false (!activecnt))
1419 break;
1420
1138 /* we might have forked, so reify kernel state if necessary */ 1421 /* we might have forked, so reify kernel state if necessary */
1139 if (expect_false (postfork)) 1422 if (expect_false (postfork))
1140 loop_fork (EV_A); 1423 loop_fork (EV_A);
1141 1424
1142 /* update fd-related kernel structures */ 1425 /* update fd-related kernel structures */
1143 fd_reify (EV_A); 1426 fd_reify (EV_A);
1144 1427
1145 /* calculate blocking time */ 1428 /* calculate blocking time */
1429 {
1430 ev_tstamp block;
1146 1431
1147 /* we only need this for !monotonic clock or timers, but as we basically 1432 if (expect_false (flags & EVLOOP_NONBLOCK || idleall || !activecnt))
1148 always have timers, we just calculate it always */ 1433 block = 0.; /* do not block at all */
1434 else
1435 {
1436 /* update time to cancel out callback processing overhead */
1149#if EV_USE_MONOTONIC 1437#if EV_USE_MONOTONIC
1150 if (expect_true (have_monotonic)) 1438 if (expect_true (have_monotonic))
1151 time_update_monotonic (EV_A); 1439 time_update_monotonic (EV_A);
1152 else 1440 else
1153#endif 1441#endif
1154 { 1442 {
1155 rt_now = ev_time (); 1443 ev_rt_now = ev_time ();
1156 mn_now = rt_now; 1444 mn_now = ev_rt_now;
1157 } 1445 }
1158 1446
1159 if (flags & EVLOOP_NONBLOCK || idlecnt)
1160 block = 0.;
1161 else
1162 {
1163 block = MAX_BLOCKTIME; 1447 block = MAX_BLOCKTIME;
1164 1448
1165 if (timercnt) 1449 if (timercnt)
1166 { 1450 {
1167 ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge; 1451 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1168 if (block > to) block = to; 1452 if (block > to) block = to;
1169 } 1453 }
1170 1454
1455#if EV_PERIODIC_ENABLE
1171 if (periodiccnt) 1456 if (periodiccnt)
1172 { 1457 {
1173 ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge; 1458 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1174 if (block > to) block = to; 1459 if (block > to) block = to;
1175 } 1460 }
1461#endif
1176 1462
1177 if (block < 0.) block = 0.; 1463 if (expect_false (block < 0.)) block = 0.;
1178 } 1464 }
1179 1465
1466 ++loop_count;
1180 method_poll (EV_A_ block); 1467 backend_poll (EV_A_ block);
1468 }
1181 1469
1182 /* update rt_now, do magic */ 1470 /* update ev_rt_now, do magic */
1183 time_update (EV_A); 1471 time_update (EV_A);
1184 1472
1185 /* queue pending timers and reschedule them */ 1473 /* queue pending timers and reschedule them */
1186 timers_reify (EV_A); /* relative timers called last */ 1474 timers_reify (EV_A); /* relative timers called last */
1475#if EV_PERIODIC_ENABLE
1187 periodics_reify (EV_A); /* absolute timers called first */ 1476 periodics_reify (EV_A); /* absolute timers called first */
1477#endif
1188 1478
1479#if EV_IDLE_ENABLE
1189 /* queue idle watchers unless io or timers are pending */ 1480 /* queue idle watchers unless other events are pending */
1190 if (idlecnt && !any_pending (EV_A)) 1481 idle_reify (EV_A);
1191 queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); 1482#endif
1192 1483
1193 /* queue check watchers, to be executed first */ 1484 /* queue check watchers, to be executed first */
1194 if (checkcnt) 1485 if (expect_false (checkcnt))
1195 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 1486 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1196 1487
1197 call_pending (EV_A); 1488 call_pending (EV_A);
1489
1198 } 1490 }
1199 while (activecnt && !loop_done); 1491 while (expect_true (activecnt && !loop_done));
1200 1492
1201 if (loop_done != 2) 1493 if (loop_done == EVUNLOOP_ONE)
1202 loop_done = 0; 1494 loop_done = EVUNLOOP_CANCEL;
1203} 1495}
1204 1496
1205void 1497void
1206ev_unloop (EV_P_ int how) 1498ev_unloop (EV_P_ int how)
1207{ 1499{
1208 loop_done = how; 1500 loop_done = how;
1209} 1501}
1210 1502
1211/*****************************************************************************/ 1503/*****************************************************************************/
1212 1504
1213inline void 1505void inline_size
1214wlist_add (WL *head, WL elem) 1506wlist_add (WL *head, WL elem)
1215{ 1507{
1216 elem->next = *head; 1508 elem->next = *head;
1217 *head = elem; 1509 *head = elem;
1218} 1510}
1219 1511
1220inline void 1512void inline_size
1221wlist_del (WL *head, WL elem) 1513wlist_del (WL *head, WL elem)
1222{ 1514{
1223 while (*head) 1515 while (*head)
1224 { 1516 {
1225 if (*head == elem) 1517 if (*head == elem)
… …
1230 1522
1231 head = &(*head)->next; 1523 head = &(*head)->next;
1232 } 1524 }
1233} 1525}
1234 1526
1235inline void 1527void inline_speed
1236ev_clear_pending (EV_P_ W w) 1528clear_pending (EV_P_ W w)
1237{ 1529{
1238 if (w->pending) 1530 if (w->pending)
1239 { 1531 {
1240 pendings [ABSPRI (w)][w->pending - 1].w = 0; 1532 pendings [ABSPRI (w)][w->pending - 1].w = 0;
1241 w->pending = 0; 1533 w->pending = 0;
1242 } 1534 }
1243} 1535}
1244 1536
1245inline void 1537void
1538ev_clear_pending (EV_P_ void *w, int invoke)
1539{
1540 W w_ = (W)w;
1541 int pending = w_->pending;
1542
1543 if (pending)
1544 {
1545 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
1546
1547 w_->pending = 0;
1548 p->w = 0;
1549
1550 if (invoke)
1551 EV_CB_INVOKE (w_, p->events);
1552 }
1553}
1554
1555void inline_size
1556pri_adjust (EV_P_ W w)
1557{
1558 int pri = w->priority;
1559 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1560 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1561 w->priority = pri;
1562}
1563
1564void inline_speed
1246ev_start (EV_P_ W w, int active) 1565ev_start (EV_P_ W w, int active)
1247{ 1566{
1248 if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; 1567 pri_adjust (EV_A_ w);
1249 if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1250
1251 w->active = active; 1568 w->active = active;
1252 ev_ref (EV_A); 1569 ev_ref (EV_A);
1253} 1570}
1254 1571
1255inline void 1572void inline_size
1256ev_stop (EV_P_ W w) 1573ev_stop (EV_P_ W w)
1257{ 1574{
1258 ev_unref (EV_A); 1575 ev_unref (EV_A);
1259 w->active = 0; 1576 w->active = 0;
1260} 1577}
1261 1578
1262/*****************************************************************************/ 1579/*****************************************************************************/
1263 1580
1264void 1581void
1265ev_io_start (EV_P_ struct ev_io *w) 1582ev_io_start (EV_P_ ev_io *w)
1266{ 1583{
1267 int fd = w->fd; 1584 int fd = w->fd;
1268 1585
1269 if (ev_is_active (w)) 1586 if (expect_false (ev_is_active (w)))
1270 return; 1587 return;
1271 1588
1272 assert (("ev_io_start called with negative fd", fd >= 0)); 1589 assert (("ev_io_start called with negative fd", fd >= 0));
1273 1590
1274 ev_start (EV_A_ (W)w, 1); 1591 ev_start (EV_A_ (W)w, 1);
… …
1277 1594
1278 fd_change (EV_A_ fd); 1595 fd_change (EV_A_ fd);
1279} 1596}
1280 1597
1281void 1598void
1282ev_io_stop (EV_P_ struct ev_io *w) 1599ev_io_stop (EV_P_ ev_io *w)
1283{ 1600{
1284 ev_clear_pending (EV_A_ (W)w); 1601 clear_pending (EV_A_ (W)w);
1285 if (!ev_is_active (w)) 1602 if (expect_false (!ev_is_active (w)))
1286 return; 1603 return;
1604
1605 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1287 1606
1288 wlist_del ((WL *)&anfds[w->fd].head, (WL)w); 1607 wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
1289 ev_stop (EV_A_ (W)w); 1608 ev_stop (EV_A_ (W)w);
1290 1609
1291 fd_change (EV_A_ w->fd); 1610 fd_change (EV_A_ w->fd);
1292} 1611}
1293 1612
1294void 1613void
1295ev_timer_start (EV_P_ struct ev_timer *w) 1614ev_timer_start (EV_P_ ev_timer *w)
1296{ 1615{
1297 if (ev_is_active (w)) 1616 if (expect_false (ev_is_active (w)))
1298 return; 1617 return;
1299 1618
1300 ((WT)w)->at += mn_now; 1619 ((WT)w)->at += mn_now;
1301 1620
1302 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 1621 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1303 1622
1304 ev_start (EV_A_ (W)w, ++timercnt); 1623 ev_start (EV_A_ (W)w, ++timercnt);
1305 array_needsize (struct ev_timer *, timers, timermax, timercnt, (void)); 1624 array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);
1306 timers [timercnt - 1] = w; 1625 timers [timercnt - 1] = w;
1307 upheap ((WT *)timers, timercnt - 1); 1626 upheap ((WT *)timers, timercnt - 1);
1308 1627
1628 /*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
1629}
1630
1631void
1632ev_timer_stop (EV_P_ ev_timer *w)
1633{
1634 clear_pending (EV_A_ (W)w);
1635 if (expect_false (!ev_is_active (w)))
1636 return;
1637
1309 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 1638 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1310}
1311 1639
1312void 1640 {
1313ev_timer_stop (EV_P_ struct ev_timer *w) 1641 int active = ((W)w)->active;
1314{
1315 ev_clear_pending (EV_A_ (W)w);
1316 if (!ev_is_active (w))
1317 return;
1318 1642
1319 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 1643 if (expect_true (--active < --timercnt))
1320
1321 if (((W)w)->active < timercnt--)
1322 { 1644 {
1323 timers [((W)w)->active - 1] = timers [timercnt]; 1645 timers [active] = timers [timercnt];
1324 downheap ((WT *)timers, timercnt, ((W)w)->active - 1); 1646 adjustheap ((WT *)timers, timercnt, active);
1325 } 1647 }
1648 }
1326 1649
1327 ((WT)w)->at = w->repeat; 1650 ((WT)w)->at -= mn_now;
1328 1651
1329 ev_stop (EV_A_ (W)w); 1652 ev_stop (EV_A_ (W)w);
1330} 1653}
1331 1654
1332void 1655void
1333ev_timer_again (EV_P_ struct ev_timer *w) 1656ev_timer_again (EV_P_ ev_timer *w)
1334{ 1657{
1335 if (ev_is_active (w)) 1658 if (ev_is_active (w))
1336 { 1659 {
1337 if (w->repeat) 1660 if (w->repeat)
1661 {
1662 ((WT)w)->at = mn_now + w->repeat;
1338 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1, mn_now + w->repeat); 1663 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1664 }
1339 else 1665 else
1340 ev_timer_stop (EV_A_ w); 1666 ev_timer_stop (EV_A_ w);
1341 } 1667 }
1342 else if (w->repeat) 1668 else if (w->repeat)
1669 {
1670 w->at = w->repeat;
1343 ev_timer_start (EV_A_ w); 1671 ev_timer_start (EV_A_ w);
1672 }
1344} 1673}
1345 1674
1675#if EV_PERIODIC_ENABLE
1346void 1676void
1347ev_periodic_start (EV_P_ struct ev_periodic *w) 1677ev_periodic_start (EV_P_ ev_periodic *w)
1348{ 1678{
1349 if (ev_is_active (w)) 1679 if (expect_false (ev_is_active (w)))
1350 return; 1680 return;
1351 1681
1352 if (w->reschedule_cb) 1682 if (w->reschedule_cb)
1353 ((WT)w)->at = w->reschedule_cb (w, rt_now); 1683 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1354 else if (w->interval) 1684 else if (w->interval)
1355 { 1685 {
1356 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 1686 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1357 /* this formula differs from the one in periodic_reify because we do not always round up */ 1687 /* this formula differs from the one in periodic_reify because we do not always round up */
1358 ((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval; 1688 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
1359 } 1689 }
1360 1690
1361 ev_start (EV_A_ (W)w, ++periodiccnt); 1691 ev_start (EV_A_ (W)w, ++periodiccnt);
1362 array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void)); 1692 array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1363 periodics [periodiccnt - 1] = w; 1693 periodics [periodiccnt - 1] = w;
1364 upheap ((WT *)periodics, periodiccnt - 1); 1694 upheap ((WT *)periodics, periodiccnt - 1);
1365 1695
1696 /*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
1697}
1698
1699void
1700ev_periodic_stop (EV_P_ ev_periodic *w)
1701{
1702 clear_pending (EV_A_ (W)w);
1703 if (expect_false (!ev_is_active (w)))
1704 return;
1705
1366 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1706 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1367}
1368 1707
1369void 1708 {
1370ev_periodic_stop (EV_P_ struct ev_periodic *w) 1709 int active = ((W)w)->active;
1371{
1372 ev_clear_pending (EV_A_ (W)w);
1373 if (!ev_is_active (w))
1374 return;
1375 1710
1376 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1711 if (expect_true (--active < --periodiccnt))
1377
1378 if (((W)w)->active < periodiccnt--)
1379 { 1712 {
1380 periodics [((W)w)->active - 1] = periodics [periodiccnt]; 1713 periodics [active] = periodics [periodiccnt];
1381 downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1); 1714 adjustheap ((WT *)periodics, periodiccnt, active);
1382 } 1715 }
1716 }
1383 1717
1384 ev_stop (EV_A_ (W)w); 1718 ev_stop (EV_A_ (W)w);
1385} 1719}
1386 1720
1387void 1721void
1388ev_periodic_again (EV_P_ struct ev_periodic *w) 1722ev_periodic_again (EV_P_ ev_periodic *w)
1389{ 1723{
1390 /* TODO: use adjustheap and recalculation */ 1724 /* TODO: use adjustheap and recalculation */
1391 ev_periodic_stop (EV_A_ w); 1725 ev_periodic_stop (EV_A_ w);
1392 ev_periodic_start (EV_A_ w); 1726 ev_periodic_start (EV_A_ w);
1393} 1727}
1394 1728#endif
1395void
1396ev_idle_start (EV_P_ struct ev_idle *w)
1397{
1398 if (ev_is_active (w))
1399 return;
1400
1401 ev_start (EV_A_ (W)w, ++idlecnt);
1402 array_needsize (struct ev_idle *, idles, idlemax, idlecnt, (void));
1403 idles [idlecnt - 1] = w;
1404}
1405
1406void
1407ev_idle_stop (EV_P_ struct ev_idle *w)
1408{
1409 ev_clear_pending (EV_A_ (W)w);
1410 if (ev_is_active (w))
1411 return;
1412
1413 idles [((W)w)->active - 1] = idles [--idlecnt];
1414 ev_stop (EV_A_ (W)w);
1415}
1416
1417void
1418ev_prepare_start (EV_P_ struct ev_prepare *w)
1419{
1420 if (ev_is_active (w))
1421 return;
1422
1423 ev_start (EV_A_ (W)w, ++preparecnt);
1424 array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, (void));
1425 prepares [preparecnt - 1] = w;
1426}
1427
1428void
1429ev_prepare_stop (EV_P_ struct ev_prepare *w)
1430{
1431 ev_clear_pending (EV_A_ (W)w);
1432 if (ev_is_active (w))
1433 return;
1434
1435 prepares [((W)w)->active - 1] = prepares [--preparecnt];
1436 ev_stop (EV_A_ (W)w);
1437}
1438
1439void
1440ev_check_start (EV_P_ struct ev_check *w)
1441{
1442 if (ev_is_active (w))
1443 return;
1444
1445 ev_start (EV_A_ (W)w, ++checkcnt);
1446 array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void));
1447 checks [checkcnt - 1] = w;
1448}
1449
1450void
1451ev_check_stop (EV_P_ struct ev_check *w)
1452{
1453 ev_clear_pending (EV_A_ (W)w);
1454 if (ev_is_active (w))
1455 return;
1456
1457 checks [((W)w)->active - 1] = checks [--checkcnt];
1458 ev_stop (EV_A_ (W)w);
1459}
1460 1729
1461#ifndef SA_RESTART 1730#ifndef SA_RESTART
1462# define SA_RESTART 0 1731# define SA_RESTART 0
1463#endif 1732#endif
1464 1733
1465void 1734void
1466ev_signal_start (EV_P_ struct ev_signal *w) 1735ev_signal_start (EV_P_ ev_signal *w)
1467{ 1736{
1468#if EV_MULTIPLICITY 1737#if EV_MULTIPLICITY
1469 assert (("signal watchers are only supported in the default loop", loop == default_loop)); 1738 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1470#endif 1739#endif
1471 if (ev_is_active (w)) 1740 if (expect_false (ev_is_active (w)))
1472 return; 1741 return;
1473 1742
1474 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 1743 assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1475 1744
1476 ev_start (EV_A_ (W)w, 1); 1745 ev_start (EV_A_ (W)w, 1);
1477 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); 1746 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1478 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); 1747 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1479 1748
1480 if (!((WL)w)->next) 1749 if (!((WL)w)->next)
1481 { 1750 {
1482#if WIN32 1751#if _WIN32
1483 signal (w->signum, sighandler); 1752 signal (w->signum, sighandler);
1484#else 1753#else
1485 struct sigaction sa; 1754 struct sigaction sa;
1486 sa.sa_handler = sighandler; 1755 sa.sa_handler = sighandler;
1487 sigfillset (&sa.sa_mask); 1756 sigfillset (&sa.sa_mask);
… …
1490#endif 1759#endif
1491 } 1760 }
1492} 1761}
1493 1762
1494void 1763void
1495ev_signal_stop (EV_P_ struct ev_signal *w) 1764ev_signal_stop (EV_P_ ev_signal *w)
1496{ 1765{
1497 ev_clear_pending (EV_A_ (W)w); 1766 clear_pending (EV_A_ (W)w);
1498 if (!ev_is_active (w)) 1767 if (expect_false (!ev_is_active (w)))
1499 return; 1768 return;
1500 1769
1501 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); 1770 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1502 ev_stop (EV_A_ (W)w); 1771 ev_stop (EV_A_ (W)w);
1503 1772
1504 if (!signals [w->signum - 1].head) 1773 if (!signals [w->signum - 1].head)
1505 signal (w->signum, SIG_DFL); 1774 signal (w->signum, SIG_DFL);
1506} 1775}
1507 1776
1508void 1777void
1509ev_child_start (EV_P_ struct ev_child *w) 1778ev_child_start (EV_P_ ev_child *w)
1510{ 1779{
1511#if EV_MULTIPLICITY 1780#if EV_MULTIPLICITY
1512 assert (("child watchers are only supported in the default loop", loop == default_loop)); 1781 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1513#endif 1782#endif
1514 if (ev_is_active (w)) 1783 if (expect_false (ev_is_active (w)))
1515 return; 1784 return;
1516 1785
1517 ev_start (EV_A_ (W)w, 1); 1786 ev_start (EV_A_ (W)w, 1);
1518 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1787 wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1519} 1788}
1520 1789
1521void 1790void
1522ev_child_stop (EV_P_ struct ev_child *w) 1791ev_child_stop (EV_P_ ev_child *w)
1523{ 1792{
1524 ev_clear_pending (EV_A_ (W)w); 1793 clear_pending (EV_A_ (W)w);
1525 if (ev_is_active (w)) 1794 if (expect_false (!ev_is_active (w)))
1526 return; 1795 return;
1527 1796
1528 wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1797 wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1529 ev_stop (EV_A_ (W)w); 1798 ev_stop (EV_A_ (W)w);
1530} 1799}
1531 1800
1801#if EV_STAT_ENABLE
1802
1803# ifdef _WIN32
1804# undef lstat
1805# define lstat(a,b) _stati64 (a,b)
1806# endif
1807
1808#define DEF_STAT_INTERVAL 5.0074891
1809#define MIN_STAT_INTERVAL 0.1074891
1810
1811static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
1812
1813#if EV_USE_INOTIFY
1814# define EV_INOTIFY_BUFSIZE 8192
1815
1816static void noinline
1817infy_add (EV_P_ ev_stat *w)
1818{
1819 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);
1820
1821 if (w->wd < 0)
1822 {
1823 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
1824
1825 /* monitor some parent directory for speedup hints */
1826 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
1827 {
1828 char path [4096];
1829 strcpy (path, w->path);
1830
1831 do
1832 {
1833 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
1834 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
1835
1836 char *pend = strrchr (path, '/');
1837
1838 if (!pend)
1839 break; /* whoops, no '/', complain to your admin */
1840
1841 *pend = 0;
1842 w->wd = inotify_add_watch (fs_fd, path, mask);
1843 }
1844 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
1845 }
1846 }
1847 else
1848 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
1849
1850 if (w->wd >= 0)
1851 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
1852}
1853
1854static void noinline
1855infy_del (EV_P_ ev_stat *w)
1856{
1857 int slot;
1858 int wd = w->wd;
1859
1860 if (wd < 0)
1861 return;
1862
1863 w->wd = -2;
1864 slot = wd & (EV_INOTIFY_HASHSIZE - 1);
1865 wlist_del (&fs_hash [slot].head, (WL)w);
1866
1867 /* remove this watcher, if others are watching it, they will rearm */
1868 inotify_rm_watch (fs_fd, wd);
1869}
1870
1871static void noinline
1872infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
1873{
1874 if (slot < 0)
1875 /* overflow, need to check for all hahs slots */
1876 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
1877 infy_wd (EV_A_ slot, wd, ev);
1878 else
1879 {
1880 WL w_;
1881
1882 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
1883 {
1884 ev_stat *w = (ev_stat *)w_;
1885 w_ = w_->next; /* lets us remove this watcher and all before it */
1886
1887 if (w->wd == wd || wd == -1)
1888 {
1889 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
1890 {
1891 w->wd = -1;
1892 infy_add (EV_A_ w); /* re-add, no matter what */
1893 }
1894
1895 stat_timer_cb (EV_A_ &w->timer, 0);
1896 }
1897 }
1898 }
1899}
1900
1901static void
1902infy_cb (EV_P_ ev_io *w, int revents)
1903{
1904 char buf [EV_INOTIFY_BUFSIZE];
1905 struct inotify_event *ev = (struct inotify_event *)buf;
1906 int ofs;
1907 int len = read (fs_fd, buf, sizeof (buf));
1908
1909 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
1910 infy_wd (EV_A_ ev->wd, ev->wd, ev);
1911}
1912
1913void inline_size
1914infy_init (EV_P)
1915{
1916 if (fs_fd != -2)
1917 return;
1918
1919 fs_fd = inotify_init ();
1920
1921 if (fs_fd >= 0)
1922 {
1923 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
1924 ev_set_priority (&fs_w, EV_MAXPRI);
1925 ev_io_start (EV_A_ &fs_w);
1926 }
1927}
1928
1929void inline_size
1930infy_fork (EV_P)
1931{
1932 int slot;
1933
1934 if (fs_fd < 0)
1935 return;
1936
1937 close (fs_fd);
1938 fs_fd = inotify_init ();
1939
1940 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
1941 {
1942 WL w_ = fs_hash [slot].head;
1943 fs_hash [slot].head = 0;
1944
1945 while (w_)
1946 {
1947 ev_stat *w = (ev_stat *)w_;
1948 w_ = w_->next; /* lets us add this watcher */
1949
1950 w->wd = -1;
1951
1952 if (fs_fd >= 0)
1953 infy_add (EV_A_ w); /* re-add, no matter what */
1954 else
1955 ev_timer_start (EV_A_ &w->timer);
1956 }
1957
1958 }
1959}
1960
1961#endif
1962
1963void
1964ev_stat_stat (EV_P_ ev_stat *w)
1965{
1966 if (lstat (w->path, &w->attr) < 0)
1967 w->attr.st_nlink = 0;
1968 else if (!w->attr.st_nlink)
1969 w->attr.st_nlink = 1;
1970}
1971
1972static void noinline
1973stat_timer_cb (EV_P_ ev_timer *w_, int revents)
1974{
1975 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
1976
1977 /* we copy this here each the time so that */
1978 /* prev has the old value when the callback gets invoked */
1979 w->prev = w->attr;
1980 ev_stat_stat (EV_A_ w);
1981
1982 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
1983 if (
1984 w->prev.st_dev != w->attr.st_dev
1985 || w->prev.st_ino != w->attr.st_ino
1986 || w->prev.st_mode != w->attr.st_mode
1987 || w->prev.st_nlink != w->attr.st_nlink
1988 || w->prev.st_uid != w->attr.st_uid
1989 || w->prev.st_gid != w->attr.st_gid
1990 || w->prev.st_rdev != w->attr.st_rdev
1991 || w->prev.st_size != w->attr.st_size
1992 || w->prev.st_atime != w->attr.st_atime
1993 || w->prev.st_mtime != w->attr.st_mtime
1994 || w->prev.st_ctime != w->attr.st_ctime
1995 ) {
1996 #if EV_USE_INOTIFY
1997 infy_del (EV_A_ w);
1998 infy_add (EV_A_ w);
1999 ev_stat_stat (EV_A_ w); /* avoid race... */
2000 #endif
2001
2002 ev_feed_event (EV_A_ w, EV_STAT);
2003 }
2004}
2005
2006void
2007ev_stat_start (EV_P_ ev_stat *w)
2008{
2009 if (expect_false (ev_is_active (w)))
2010 return;
2011
2012 /* since we use memcmp, we need to clear any padding data etc. */
2013 memset (&w->prev, 0, sizeof (ev_statdata));
2014 memset (&w->attr, 0, sizeof (ev_statdata));
2015
2016 ev_stat_stat (EV_A_ w);
2017
2018 if (w->interval < MIN_STAT_INTERVAL)
2019 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2020
2021 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
2022 ev_set_priority (&w->timer, ev_priority (w));
2023
2024#if EV_USE_INOTIFY
2025 infy_init (EV_A);
2026
2027 if (fs_fd >= 0)
2028 infy_add (EV_A_ w);
2029 else
2030#endif
2031 ev_timer_start (EV_A_ &w->timer);
2032
2033 ev_start (EV_A_ (W)w, 1);
2034}
2035
2036void
2037ev_stat_stop (EV_P_ ev_stat *w)
2038{
2039 clear_pending (EV_A_ (W)w);
2040 if (expect_false (!ev_is_active (w)))
2041 return;
2042
2043#if EV_USE_INOTIFY
2044 infy_del (EV_A_ w);
2045#endif
2046 ev_timer_stop (EV_A_ &w->timer);
2047
2048 ev_stop (EV_A_ (W)w);
2049}
2050#endif
2051
2052#if EV_IDLE_ENABLE
2053void
2054ev_idle_start (EV_P_ ev_idle *w)
2055{
2056 if (expect_false (ev_is_active (w)))
2057 return;
2058
2059 pri_adjust (EV_A_ (W)w);
2060
2061 {
2062 int active = ++idlecnt [ABSPRI (w)];
2063
2064 ++idleall;
2065 ev_start (EV_A_ (W)w, active);
2066
2067 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2068 idles [ABSPRI (w)][active - 1] = w;
2069 }
2070}
2071
2072void
2073ev_idle_stop (EV_P_ ev_idle *w)
2074{
2075 clear_pending (EV_A_ (W)w);
2076 if (expect_false (!ev_is_active (w)))
2077 return;
2078
2079 {
2080 int active = ((W)w)->active;
2081
2082 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2083 ((W)idles [ABSPRI (w)][active - 1])->active = active;
2084
2085 ev_stop (EV_A_ (W)w);
2086 --idleall;
2087 }
2088}
2089#endif
2090
2091void
2092ev_prepare_start (EV_P_ ev_prepare *w)
2093{
2094 if (expect_false (ev_is_active (w)))
2095 return;
2096
2097 ev_start (EV_A_ (W)w, ++preparecnt);
2098 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2099 prepares [preparecnt - 1] = w;
2100}
2101
2102void
2103ev_prepare_stop (EV_P_ ev_prepare *w)
2104{
2105 clear_pending (EV_A_ (W)w);
2106 if (expect_false (!ev_is_active (w)))
2107 return;
2108
2109 {
2110 int active = ((W)w)->active;
2111 prepares [active - 1] = prepares [--preparecnt];
2112 ((W)prepares [active - 1])->active = active;
2113 }
2114
2115 ev_stop (EV_A_ (W)w);
2116}
2117
2118void
2119ev_check_start (EV_P_ ev_check *w)
2120{
2121 if (expect_false (ev_is_active (w)))
2122 return;
2123
2124 ev_start (EV_A_ (W)w, ++checkcnt);
2125 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2126 checks [checkcnt - 1] = w;
2127}
2128
2129void
2130ev_check_stop (EV_P_ ev_check *w)
2131{
2132 clear_pending (EV_A_ (W)w);
2133 if (expect_false (!ev_is_active (w)))
2134 return;
2135
2136 {
2137 int active = ((W)w)->active;
2138 checks [active - 1] = checks [--checkcnt];
2139 ((W)checks [active - 1])->active = active;
2140 }
2141
2142 ev_stop (EV_A_ (W)w);
2143}
2144
2145#if EV_EMBED_ENABLE
2146void noinline
2147ev_embed_sweep (EV_P_ ev_embed *w)
2148{
2149 ev_loop (w->loop, EVLOOP_NONBLOCK);
2150}
2151
2152static void
2153embed_cb (EV_P_ ev_io *io, int revents)
2154{
2155 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2156
2157 if (ev_cb (w))
2158 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2159 else
2160 ev_embed_sweep (loop, w);
2161}
2162
2163void
2164ev_embed_start (EV_P_ ev_embed *w)
2165{
2166 if (expect_false (ev_is_active (w)))
2167 return;
2168
2169 {
2170 struct ev_loop *loop = w->loop;
2171 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2172 ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
2173 }
2174
2175 ev_set_priority (&w->io, ev_priority (w));
2176 ev_io_start (EV_A_ &w->io);
2177
2178 ev_start (EV_A_ (W)w, 1);
2179}
2180
2181void
2182ev_embed_stop (EV_P_ ev_embed *w)
2183{
2184 clear_pending (EV_A_ (W)w);
2185 if (expect_false (!ev_is_active (w)))
2186 return;
2187
2188 ev_io_stop (EV_A_ &w->io);
2189
2190 ev_stop (EV_A_ (W)w);
2191}
2192#endif
2193
2194#if EV_FORK_ENABLE
2195void
2196ev_fork_start (EV_P_ ev_fork *w)
2197{
2198 if (expect_false (ev_is_active (w)))
2199 return;
2200
2201 ev_start (EV_A_ (W)w, ++forkcnt);
2202 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2203 forks [forkcnt - 1] = w;
2204}
2205
2206void
2207ev_fork_stop (EV_P_ ev_fork *w)
2208{
2209 clear_pending (EV_A_ (W)w);
2210 if (expect_false (!ev_is_active (w)))
2211 return;
2212
2213 {
2214 int active = ((W)w)->active;
2215 forks [active - 1] = forks [--forkcnt];
2216 ((W)forks [active - 1])->active = active;
2217 }
2218
2219 ev_stop (EV_A_ (W)w);
2220}
2221#endif
2222
1532/*****************************************************************************/ 2223/*****************************************************************************/
1533 2224
1534struct ev_once 2225struct ev_once
1535{ 2226{
1536 struct ev_io io; 2227 ev_io io;
1537 struct ev_timer to; 2228 ev_timer to;
1538 void (*cb)(int revents, void *arg); 2229 void (*cb)(int revents, void *arg);
1539 void *arg; 2230 void *arg;
1540}; 2231};
1541 2232
1542static void 2233static void
… …
1551 2242
1552 cb (revents, arg); 2243 cb (revents, arg);
1553} 2244}
1554 2245
1555static void 2246static void
1556once_cb_io (EV_P_ struct ev_io *w, int revents) 2247once_cb_io (EV_P_ ev_io *w, int revents)
1557{ 2248{
1558 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 2249 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1559} 2250}
1560 2251
1561static void 2252static void
1562once_cb_to (EV_P_ struct ev_timer *w, int revents) 2253once_cb_to (EV_P_ ev_timer *w, int revents)
1563{ 2254{
1564 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 2255 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1565} 2256}
1566 2257
1567void 2258void
1568ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 2259ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1569{ 2260{
1570 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 2261 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1571 2262
1572 if (!once) 2263 if (expect_false (!once))
2264 {
1573 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 2265 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1574 else 2266 return;
1575 { 2267 }
2268
1576 once->cb = cb; 2269 once->cb = cb;
1577 once->arg = arg; 2270 once->arg = arg;
1578 2271
1579 ev_init (&once->io, once_cb_io); 2272 ev_init (&once->io, once_cb_io);
1580 if (fd >= 0) 2273 if (fd >= 0)
1581 { 2274 {
1582 ev_io_set (&once->io, fd, events); 2275 ev_io_set (&once->io, fd, events);
1583 ev_io_start (EV_A_ &once->io); 2276 ev_io_start (EV_A_ &once->io);
1584 } 2277 }
1585 2278
1586 ev_init (&once->to, once_cb_to); 2279 ev_init (&once->to, once_cb_to);
1587 if (timeout >= 0.) 2280 if (timeout >= 0.)
1588 { 2281 {
1589 ev_timer_set (&once->to, timeout, 0.); 2282 ev_timer_set (&once->to, timeout, 0.);
1590 ev_timer_start (EV_A_ &once->to); 2283 ev_timer_start (EV_A_ &once->to);
1591 }
1592 } 2284 }
1593} 2285}
1594 2286
2287#ifdef __cplusplus
2288}
2289#endif
2290

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