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Comparing libev/ev.c (file contents):
Revision 1.86 by root, Sat Nov 10 03:19:21 2007 UTC vs.
Revision 1.181 by root, Wed Dec 12 00:17:08 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/*
222 * This is used to avoid floating point rounding problems.
223 * It is added to ev_rt_now when scheduling periodics
224 * to ensure progress, time-wise, even when rounding
225 * errors are against us.
226 * This value is good at least till the year 4000.
227 * Better solutions welcome.
228 */
229#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
230
231#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
232#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
233/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
234
137#if __GNUC__ >= 3 235#if __GNUC__ >= 3
138# define expect(expr,value) __builtin_expect ((expr),(value)) 236# define expect(expr,value) __builtin_expect ((expr),(value))
139# define inline inline 237# define noinline __attribute__ ((noinline))
140#else 238#else
141# define expect(expr,value) (expr) 239# define expect(expr,value) (expr)
142# define inline static 240# define noinline
241# if __STDC_VERSION__ < 199901L
242# define inline
243# endif
143#endif 244#endif
144 245
145#define expect_false(expr) expect ((expr) != 0, 0) 246#define expect_false(expr) expect ((expr) != 0, 0)
146#define expect_true(expr) expect ((expr) != 0, 1) 247#define expect_true(expr) expect ((expr) != 0, 1)
248#define inline_size static inline
249
250#if EV_MINIMAL
251# define inline_speed static noinline
252#else
253# define inline_speed static inline
254#endif
147 255
148#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 256#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
149#define ABSPRI(w) ((w)->priority - EV_MINPRI) 257#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
150 258
259#define EMPTY /* required for microsofts broken pseudo-c compiler */
260#define EMPTY2(a,b) /* used to suppress some warnings */
261
151typedef struct ev_watcher *W; 262typedef ev_watcher *W;
152typedef struct ev_watcher_list *WL; 263typedef ev_watcher_list *WL;
153typedef struct ev_watcher_time *WT; 264typedef ev_watcher_time *WT;
154 265
155static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 266static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
156 267
268#ifdef _WIN32
157#include "ev_win32.c" 269# include "ev_win32.c"
270#endif
158 271
159/*****************************************************************************/ 272/*****************************************************************************/
160 273
161static void (*syserr_cb)(const char *msg); 274static void (*syserr_cb)(const char *msg);
162 275
276void
163void ev_set_syserr_cb (void (*cb)(const char *msg)) 277ev_set_syserr_cb (void (*cb)(const char *msg))
164{ 278{
165 syserr_cb = cb; 279 syserr_cb = cb;
166} 280}
167 281
168static void 282static void noinline
169syserr (const char *msg) 283syserr (const char *msg)
170{ 284{
171 if (!msg) 285 if (!msg)
172 msg = "(libev) system error"; 286 msg = "(libev) system error";
173 287
… …
180 } 294 }
181} 295}
182 296
183static void *(*alloc)(void *ptr, long size); 297static void *(*alloc)(void *ptr, long size);
184 298
299void
185void ev_set_allocator (void *(*cb)(void *ptr, long size)) 300ev_set_allocator (void *(*cb)(void *ptr, long size))
186{ 301{
187 alloc = cb; 302 alloc = cb;
188} 303}
189 304
190static void * 305inline_speed void *
191ev_realloc (void *ptr, long size) 306ev_realloc (void *ptr, long size)
192{ 307{
193 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size); 308 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
194 309
195 if (!ptr && size) 310 if (!ptr && size)
… …
209typedef struct 324typedef struct
210{ 325{
211 WL head; 326 WL head;
212 unsigned char events; 327 unsigned char events;
213 unsigned char reify; 328 unsigned char reify;
329#if EV_SELECT_IS_WINSOCKET
330 SOCKET handle;
331#endif
214} ANFD; 332} ANFD;
215 333
216typedef struct 334typedef struct
217{ 335{
218 W w; 336 W w;
219 int events; 337 int events;
220} ANPENDING; 338} ANPENDING;
221 339
340#if EV_USE_INOTIFY
341typedef struct
342{
343 WL head;
344} ANFS;
345#endif
346
222#if EV_MULTIPLICITY 347#if EV_MULTIPLICITY
223 348
224 struct ev_loop 349 struct ev_loop
225 { 350 {
226 ev_tstamp ev_rt_now; 351 ev_tstamp ev_rt_now;
352 #define ev_rt_now ((loop)->ev_rt_now)
227 #define VAR(name,decl) decl; 353 #define VAR(name,decl) decl;
228 #include "ev_vars.h" 354 #include "ev_vars.h"
229 #undef VAR 355 #undef VAR
230 }; 356 };
231 #include "ev_wrap.h" 357 #include "ev_wrap.h"
232 358
233 struct ev_loop default_loop_struct; 359 static struct ev_loop default_loop_struct;
234 static struct ev_loop *default_loop; 360 struct ev_loop *ev_default_loop_ptr;
235 361
236#else 362#else
237 363
238 ev_tstamp ev_rt_now; 364 ev_tstamp ev_rt_now;
239 #define VAR(name,decl) static decl; 365 #define VAR(name,decl) static decl;
240 #include "ev_vars.h" 366 #include "ev_vars.h"
241 #undef VAR 367 #undef VAR
242 368
243 static int default_loop; 369 static int ev_default_loop_ptr;
244 370
245#endif 371#endif
246 372
247/*****************************************************************************/ 373/*****************************************************************************/
248 374
249inline ev_tstamp 375ev_tstamp
250ev_time (void) 376ev_time (void)
251{ 377{
252#if EV_USE_REALTIME 378#if EV_USE_REALTIME
253 struct timespec ts; 379 struct timespec ts;
254 clock_gettime (CLOCK_REALTIME, &ts); 380 clock_gettime (CLOCK_REALTIME, &ts);
… …
258 gettimeofday (&tv, 0); 384 gettimeofday (&tv, 0);
259 return tv.tv_sec + tv.tv_usec * 1e-6; 385 return tv.tv_sec + tv.tv_usec * 1e-6;
260#endif 386#endif
261} 387}
262 388
263inline ev_tstamp 389ev_tstamp inline_size
264get_clock (void) 390get_clock (void)
265{ 391{
266#if EV_USE_MONOTONIC 392#if EV_USE_MONOTONIC
267 if (expect_true (have_monotonic)) 393 if (expect_true (have_monotonic))
268 { 394 {
… …
281{ 407{
282 return ev_rt_now; 408 return ev_rt_now;
283} 409}
284#endif 410#endif
285 411
286#define array_roundsize(type,n) ((n) | 4 & ~3) 412int inline_size
413array_nextsize (int elem, int cur, int cnt)
414{
415 int ncur = cur + 1;
416
417 do
418 ncur <<= 1;
419 while (cnt > ncur);
420
421 /* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */
422 if (elem * ncur > 4096)
423 {
424 ncur *= elem;
425 ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095;
426 ncur = ncur - sizeof (void *) * 4;
427 ncur /= elem;
428 }
429
430 return ncur;
431}
432
433static noinline void *
434array_realloc (int elem, void *base, int *cur, int cnt)
435{
436 *cur = array_nextsize (elem, *cur, cnt);
437 return ev_realloc (base, elem * *cur);
438}
287 439
288#define array_needsize(type,base,cur,cnt,init) \ 440#define array_needsize(type,base,cur,cnt,init) \
289 if (expect_false ((cnt) > cur)) \ 441 if (expect_false ((cnt) > (cur))) \
290 { \ 442 { \
291 int newcnt = cur; \ 443 int ocur_ = (cur); \
292 do \ 444 (base) = (type *)array_realloc \
293 { \ 445 (sizeof (type), (base), &(cur), (cnt)); \
294 newcnt = array_roundsize (type, newcnt << 1); \ 446 init ((base) + (ocur_), (cur) - ocur_); \
295 } \
296 while ((cnt) > newcnt); \
297 \
298 base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\
299 init (base + cur, newcnt - cur); \
300 cur = newcnt; \
301 } 447 }
302 448
449#if 0
303#define array_slim(type,stem) \ 450#define array_slim(type,stem) \
304 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 451 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
305 { \ 452 { \
306 stem ## max = array_roundsize (stem ## cnt >> 1); \ 453 stem ## max = array_roundsize (stem ## cnt >> 1); \
307 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\ 454 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
308 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 455 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
309 } 456 }
310 457#endif
311/* microsoft's pseudo-c is quite far from C as the rest of the world and the standard knows it */
312/* bringing us everlasting joy in form of stupid extra macros that are not required in C */
313#define array_free_microshit(stem) \
314 ev_free (stem ## s); stem ## cnt = stem ## max = 0;
315 458
316#define array_free(stem, idx) \ 459#define array_free(stem, idx) \
317 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 460 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
318 461
319/*****************************************************************************/ 462/*****************************************************************************/
320 463
321static void 464void noinline
465ev_feed_event (EV_P_ void *w, int revents)
466{
467 W w_ = (W)w;
468 int pri = ABSPRI (w_);
469
470 if (expect_false (w_->pending))
471 pendings [pri][w_->pending - 1].events |= revents;
472 else
473 {
474 w_->pending = ++pendingcnt [pri];
475 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
476 pendings [pri][w_->pending - 1].w = w_;
477 pendings [pri][w_->pending - 1].events = revents;
478 }
479}
480
481void inline_speed
482queue_events (EV_P_ W *events, int eventcnt, int type)
483{
484 int i;
485
486 for (i = 0; i < eventcnt; ++i)
487 ev_feed_event (EV_A_ events [i], type);
488}
489
490/*****************************************************************************/
491
492void inline_size
322anfds_init (ANFD *base, int count) 493anfds_init (ANFD *base, int count)
323{ 494{
324 while (count--) 495 while (count--)
325 { 496 {
326 base->head = 0; 497 base->head = 0;
… …
329 500
330 ++base; 501 ++base;
331 } 502 }
332} 503}
333 504
334void 505void inline_speed
335ev_feed_event (EV_P_ void *w, int revents)
336{
337 W w_ = (W)w;
338
339 if (w_->pending)
340 {
341 pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
342 return;
343 }
344
345 w_->pending = ++pendingcnt [ABSPRI (w_)];
346 array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], (void));
347 pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
348 pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
349}
350
351static void
352queue_events (EV_P_ W *events, int eventcnt, int type)
353{
354 int i;
355
356 for (i = 0; i < eventcnt; ++i)
357 ev_feed_event (EV_A_ events [i], type);
358}
359
360inline void
361fd_event (EV_P_ int fd, int revents) 506fd_event (EV_P_ int fd, int revents)
362{ 507{
363 ANFD *anfd = anfds + fd; 508 ANFD *anfd = anfds + fd;
364 struct ev_io *w; 509 ev_io *w;
365 510
366 for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) 511 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
367 { 512 {
368 int ev = w->events & revents; 513 int ev = w->events & revents;
369 514
370 if (ev) 515 if (ev)
371 ev_feed_event (EV_A_ (W)w, ev); 516 ev_feed_event (EV_A_ (W)w, ev);
… …
373} 518}
374 519
375void 520void
376ev_feed_fd_event (EV_P_ int fd, int revents) 521ev_feed_fd_event (EV_P_ int fd, int revents)
377{ 522{
523 if (fd >= 0 && fd < anfdmax)
378 fd_event (EV_A_ fd, revents); 524 fd_event (EV_A_ fd, revents);
379} 525}
380 526
381/*****************************************************************************/ 527void inline_size
382
383static void
384fd_reify (EV_P) 528fd_reify (EV_P)
385{ 529{
386 int i; 530 int i;
387 531
388 for (i = 0; i < fdchangecnt; ++i) 532 for (i = 0; i < fdchangecnt; ++i)
389 { 533 {
390 int fd = fdchanges [i]; 534 int fd = fdchanges [i];
391 ANFD *anfd = anfds + fd; 535 ANFD *anfd = anfds + fd;
392 struct ev_io *w; 536 ev_io *w;
393 537
394 int events = 0; 538 int events = 0;
395 539
396 for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) 540 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
397 events |= w->events; 541 events |= w->events;
398 542
543#if EV_SELECT_IS_WINSOCKET
544 if (events)
545 {
546 unsigned long argp;
547 anfd->handle = _get_osfhandle (fd);
548 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
549 }
550#endif
551
399 anfd->reify = 0; 552 anfd->reify = 0;
400 553
401 method_modify (EV_A_ fd, anfd->events, events); 554 backend_modify (EV_A_ fd, anfd->events, events);
402 anfd->events = events; 555 anfd->events = events;
403 } 556 }
404 557
405 fdchangecnt = 0; 558 fdchangecnt = 0;
406} 559}
407 560
408static void 561void inline_size
409fd_change (EV_P_ int fd) 562fd_change (EV_P_ int fd)
410{ 563{
411 if (anfds [fd].reify) 564 if (expect_false (anfds [fd].reify))
412 return; 565 return;
413 566
414 anfds [fd].reify = 1; 567 anfds [fd].reify = 1;
415 568
416 ++fdchangecnt; 569 ++fdchangecnt;
417 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void)); 570 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
418 fdchanges [fdchangecnt - 1] = fd; 571 fdchanges [fdchangecnt - 1] = fd;
419} 572}
420 573
421static void 574void inline_speed
422fd_kill (EV_P_ int fd) 575fd_kill (EV_P_ int fd)
423{ 576{
424 struct ev_io *w; 577 ev_io *w;
425 578
426 while ((w = (struct ev_io *)anfds [fd].head)) 579 while ((w = (ev_io *)anfds [fd].head))
427 { 580 {
428 ev_io_stop (EV_A_ w); 581 ev_io_stop (EV_A_ w);
429 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 582 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
430 } 583 }
431} 584}
432 585
433static int 586int inline_size
434fd_valid (int fd) 587fd_valid (int fd)
435{ 588{
436#ifdef WIN32 589#ifdef _WIN32
437 return !!win32_get_osfhandle (fd); 590 return _get_osfhandle (fd) != -1;
438#else 591#else
439 return fcntl (fd, F_GETFD) != -1; 592 return fcntl (fd, F_GETFD) != -1;
440#endif 593#endif
441} 594}
442 595
443/* called on EBADF to verify fds */ 596/* called on EBADF to verify fds */
444static void 597static void noinline
445fd_ebadf (EV_P) 598fd_ebadf (EV_P)
446{ 599{
447 int fd; 600 int fd;
448 601
449 for (fd = 0; fd < anfdmax; ++fd) 602 for (fd = 0; fd < anfdmax; ++fd)
… …
451 if (!fd_valid (fd) == -1 && errno == EBADF) 604 if (!fd_valid (fd) == -1 && errno == EBADF)
452 fd_kill (EV_A_ fd); 605 fd_kill (EV_A_ fd);
453} 606}
454 607
455/* called on ENOMEM in select/poll to kill some fds and retry */ 608/* called on ENOMEM in select/poll to kill some fds and retry */
456static void 609static void noinline
457fd_enomem (EV_P) 610fd_enomem (EV_P)
458{ 611{
459 int fd; 612 int fd;
460 613
461 for (fd = anfdmax; fd--; ) 614 for (fd = anfdmax; fd--; )
… …
464 fd_kill (EV_A_ fd); 617 fd_kill (EV_A_ fd);
465 return; 618 return;
466 } 619 }
467} 620}
468 621
469/* usually called after fork if method needs to re-arm all fds from scratch */ 622/* usually called after fork if backend needs to re-arm all fds from scratch */
470static void 623static void noinline
471fd_rearm_all (EV_P) 624fd_rearm_all (EV_P)
472{ 625{
473 int fd; 626 int fd;
474 627
475 /* this should be highly optimised to not do anything but set a flag */
476 for (fd = 0; fd < anfdmax; ++fd) 628 for (fd = 0; fd < anfdmax; ++fd)
477 if (anfds [fd].events) 629 if (anfds [fd].events)
478 { 630 {
479 anfds [fd].events = 0; 631 anfds [fd].events = 0;
480 fd_change (EV_A_ fd); 632 fd_change (EV_A_ fd);
481 } 633 }
482} 634}
483 635
484/*****************************************************************************/ 636/*****************************************************************************/
485 637
486static void 638void inline_speed
487upheap (WT *heap, int k) 639upheap (WT *heap, int k)
488{ 640{
489 WT w = heap [k]; 641 WT w = heap [k];
490 642
491 while (k && heap [k >> 1]->at > w->at) 643 while (k)
492 { 644 {
645 int p = (k - 1) >> 1;
646
647 if (heap [p]->at <= w->at)
648 break;
649
493 heap [k] = heap [k >> 1]; 650 heap [k] = heap [p];
494 ((W)heap [k])->active = k + 1; 651 ((W)heap [k])->active = k + 1;
495 k >>= 1; 652 k = p;
496 } 653 }
497 654
498 heap [k] = w; 655 heap [k] = w;
499 ((W)heap [k])->active = k + 1; 656 ((W)heap [k])->active = k + 1;
500
501} 657}
502 658
503static void 659void inline_speed
504downheap (WT *heap, int N, int k) 660downheap (WT *heap, int N, int k)
505{ 661{
506 WT w = heap [k]; 662 WT w = heap [k];
507 663
508 while (k < (N >> 1)) 664 for (;;)
509 { 665 {
510 int j = k << 1; 666 int c = (k << 1) + 1;
511 667
512 if (j + 1 < N && heap [j]->at > heap [j + 1]->at) 668 if (c >= N)
513 ++j;
514
515 if (w->at <= heap [j]->at)
516 break; 669 break;
517 670
671 c += c + 1 < N && heap [c]->at > heap [c + 1]->at
672 ? 1 : 0;
673
674 if (w->at <= heap [c]->at)
675 break;
676
518 heap [k] = heap [j]; 677 heap [k] = heap [c];
519 ((W)heap [k])->active = k + 1; 678 ((W)heap [k])->active = k + 1;
679
520 k = j; 680 k = c;
521 } 681 }
522 682
523 heap [k] = w; 683 heap [k] = w;
524 ((W)heap [k])->active = k + 1; 684 ((W)heap [k])->active = k + 1;
525} 685}
526 686
527inline void 687void inline_size
528adjustheap (WT *heap, int N, int k, ev_tstamp at) 688adjustheap (WT *heap, int N, int k)
529{ 689{
530 ev_tstamp old_at = heap [k]->at; 690 upheap (heap, k);
531 heap [k]->at = at;
532
533 if (old_at < at)
534 downheap (heap, N, k); 691 downheap (heap, N, k);
535 else
536 upheap (heap, k);
537} 692}
538 693
539/*****************************************************************************/ 694/*****************************************************************************/
540 695
541typedef struct 696typedef struct
… …
547static ANSIG *signals; 702static ANSIG *signals;
548static int signalmax; 703static int signalmax;
549 704
550static int sigpipe [2]; 705static int sigpipe [2];
551static sig_atomic_t volatile gotsig; 706static sig_atomic_t volatile gotsig;
552static struct ev_io sigev; 707static ev_io sigev;
553 708
554static void 709void inline_size
555signals_init (ANSIG *base, int count) 710signals_init (ANSIG *base, int count)
556{ 711{
557 while (count--) 712 while (count--)
558 { 713 {
559 base->head = 0; 714 base->head = 0;
… …
564} 719}
565 720
566static void 721static void
567sighandler (int signum) 722sighandler (int signum)
568{ 723{
569#if WIN32 724#if _WIN32
570 signal (signum, sighandler); 725 signal (signum, sighandler);
571#endif 726#endif
572 727
573 signals [signum - 1].gotsig = 1; 728 signals [signum - 1].gotsig = 1;
574 729
575 if (!gotsig) 730 if (!gotsig)
576 { 731 {
577 int old_errno = errno; 732 int old_errno = errno;
578 gotsig = 1; 733 gotsig = 1;
579#ifdef WIN32
580 send (sigpipe [1], &signum, 1, MSG_DONTWAIT);
581#else
582 write (sigpipe [1], &signum, 1); 734 write (sigpipe [1], &signum, 1);
583#endif
584 errno = old_errno; 735 errno = old_errno;
585 } 736 }
586} 737}
587 738
588void 739void noinline
589ev_feed_signal_event (EV_P_ int signum) 740ev_feed_signal_event (EV_P_ int signum)
590{ 741{
591 WL w; 742 WL w;
592 743
593#if EV_MULTIPLICITY 744#if EV_MULTIPLICITY
594 assert (("feeding signal events is only supported in the default loop", loop == default_loop)); 745 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
595#endif 746#endif
596 747
597 --signum; 748 --signum;
598 749
599 if (signum < 0 || signum >= signalmax) 750 if (signum < 0 || signum >= signalmax)
… …
604 for (w = signals [signum].head; w; w = w->next) 755 for (w = signals [signum].head; w; w = w->next)
605 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 756 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
606} 757}
607 758
608static void 759static void
609sigcb (EV_P_ struct ev_io *iow, int revents) 760sigcb (EV_P_ ev_io *iow, int revents)
610{ 761{
611 int signum; 762 int signum;
612 763
613#ifdef WIN32
614 recv (sigpipe [0], &revents, 1, MSG_DONTWAIT);
615#else
616 read (sigpipe [0], &revents, 1); 764 read (sigpipe [0], &revents, 1);
617#endif
618 gotsig = 0; 765 gotsig = 0;
619 766
620 for (signum = signalmax; signum--; ) 767 for (signum = signalmax; signum--; )
621 if (signals [signum].gotsig) 768 if (signals [signum].gotsig)
622 ev_feed_signal_event (EV_A_ signum + 1); 769 ev_feed_signal_event (EV_A_ signum + 1);
623} 770}
624 771
625static void 772void inline_speed
773fd_intern (int fd)
774{
775#ifdef _WIN32
776 int arg = 1;
777 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
778#else
779 fcntl (fd, F_SETFD, FD_CLOEXEC);
780 fcntl (fd, F_SETFL, O_NONBLOCK);
781#endif
782}
783
784static void noinline
626siginit (EV_P) 785siginit (EV_P)
627{ 786{
628#ifndef WIN32 787 fd_intern (sigpipe [0]);
629 fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC); 788 fd_intern (sigpipe [1]);
630 fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
631
632 /* rather than sort out wether we really need nb, set it */
633 fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
634 fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
635#endif
636 789
637 ev_io_set (&sigev, sigpipe [0], EV_READ); 790 ev_io_set (&sigev, sigpipe [0], EV_READ);
638 ev_io_start (EV_A_ &sigev); 791 ev_io_start (EV_A_ &sigev);
639 ev_unref (EV_A); /* child watcher should not keep loop alive */ 792 ev_unref (EV_A); /* child watcher should not keep loop alive */
640} 793}
641 794
642/*****************************************************************************/ 795/*****************************************************************************/
643 796
644static struct ev_child *childs [PID_HASHSIZE]; 797static ev_child *childs [EV_PID_HASHSIZE];
645 798
646#ifndef WIN32 799#ifndef _WIN32
647 800
648static struct ev_signal childev; 801static ev_signal childev;
802
803void inline_speed
804child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
805{
806 ev_child *w;
807
808 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
809 if (w->pid == pid || !w->pid)
810 {
811 ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */
812 w->rpid = pid;
813 w->rstatus = status;
814 ev_feed_event (EV_A_ (W)w, EV_CHILD);
815 }
816}
649 817
650#ifndef WCONTINUED 818#ifndef WCONTINUED
651# define WCONTINUED 0 819# define WCONTINUED 0
652#endif 820#endif
653 821
654static void 822static void
655child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
656{
657 struct ev_child *w;
658
659 for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
660 if (w->pid == pid || !w->pid)
661 {
662 ev_priority (w) = ev_priority (sw); /* need to do it *now* */
663 w->rpid = pid;
664 w->rstatus = status;
665 ev_feed_event (EV_A_ (W)w, EV_CHILD);
666 }
667}
668
669static void
670childcb (EV_P_ struct ev_signal *sw, int revents) 823childcb (EV_P_ ev_signal *sw, int revents)
671{ 824{
672 int pid, status; 825 int pid, status;
673 826
827 /* some systems define WCONTINUED but then fail to support it (linux 2.4) */
674 if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) 828 if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
675 { 829 if (!WCONTINUED
830 || errno != EINVAL
831 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
832 return;
833
676 /* make sure we are called again until all childs have been reaped */ 834 /* make sure we are called again until all childs have been reaped */
835 /* we need to do it this way so that the callback gets called before we continue */
677 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 836 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
678 837
679 child_reap (EV_A_ sw, pid, pid, status); 838 child_reap (EV_A_ sw, pid, pid, status);
839 if (EV_PID_HASHSIZE > 1)
680 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */ 840 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
681 }
682} 841}
683 842
684#endif 843#endif
685 844
686/*****************************************************************************/ 845/*****************************************************************************/
687 846
847#if EV_USE_PORT
848# include "ev_port.c"
849#endif
688#if EV_USE_KQUEUE 850#if EV_USE_KQUEUE
689# include "ev_kqueue.c" 851# include "ev_kqueue.c"
690#endif 852#endif
691#if EV_USE_EPOLL 853#if EV_USE_EPOLL
692# include "ev_epoll.c" 854# include "ev_epoll.c"
… …
709{ 871{
710 return EV_VERSION_MINOR; 872 return EV_VERSION_MINOR;
711} 873}
712 874
713/* return true if we are running with elevated privileges and should ignore env variables */ 875/* return true if we are running with elevated privileges and should ignore env variables */
714static int 876int inline_size
715enable_secure (void) 877enable_secure (void)
716{ 878{
717#ifdef WIN32 879#ifdef _WIN32
718 return 0; 880 return 0;
719#else 881#else
720 return getuid () != geteuid () 882 return getuid () != geteuid ()
721 || getgid () != getegid (); 883 || getgid () != getegid ();
722#endif 884#endif
723} 885}
724 886
725int 887unsigned int
726ev_method (EV_P) 888ev_supported_backends (void)
727{ 889{
728 return method; 890 unsigned int flags = 0;
729}
730 891
731static void 892 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
732loop_init (EV_P_ int methods) 893 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
894 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
895 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
896 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
897
898 return flags;
899}
900
901unsigned int
902ev_recommended_backends (void)
733{ 903{
734 if (!method) 904 unsigned int flags = ev_supported_backends ();
905
906#ifndef __NetBSD__
907 /* kqueue is borked on everything but netbsd apparently */
908 /* it usually doesn't work correctly on anything but sockets and pipes */
909 flags &= ~EVBACKEND_KQUEUE;
910#endif
911#ifdef __APPLE__
912 // flags &= ~EVBACKEND_KQUEUE; for documentation
913 flags &= ~EVBACKEND_POLL;
914#endif
915
916 return flags;
917}
918
919unsigned int
920ev_embeddable_backends (void)
921{
922 return EVBACKEND_EPOLL
923 | EVBACKEND_KQUEUE
924 | EVBACKEND_PORT;
925}
926
927unsigned int
928ev_backend (EV_P)
929{
930 return backend;
931}
932
933unsigned int
934ev_loop_count (EV_P)
935{
936 return loop_count;
937}
938
939static void noinline
940loop_init (EV_P_ unsigned int flags)
941{
942 if (!backend)
735 { 943 {
736#if EV_USE_MONOTONIC 944#if EV_USE_MONOTONIC
737 { 945 {
738 struct timespec ts; 946 struct timespec ts;
739 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 947 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
… …
744 ev_rt_now = ev_time (); 952 ev_rt_now = ev_time ();
745 mn_now = get_clock (); 953 mn_now = get_clock ();
746 now_floor = mn_now; 954 now_floor = mn_now;
747 rtmn_diff = ev_rt_now - mn_now; 955 rtmn_diff = ev_rt_now - mn_now;
748 956
749 if (methods == EVMETHOD_AUTO) 957 /* pid check not overridable via env */
750 if (!enable_secure () && getenv ("LIBEV_METHODS")) 958#ifndef _WIN32
959 if (flags & EVFLAG_FORKCHECK)
960 curpid = getpid ();
961#endif
962
963 if (!(flags & EVFLAG_NOENV)
964 && !enable_secure ()
965 && getenv ("LIBEV_FLAGS"))
751 methods = atoi (getenv ("LIBEV_METHODS")); 966 flags = atoi (getenv ("LIBEV_FLAGS"));
752 else
753 methods = EVMETHOD_ANY;
754 967
755 method = 0; 968 if (!(flags & 0x0000ffffUL))
969 flags |= ev_recommended_backends ();
970
971 backend = 0;
972 backend_fd = -1;
756#if EV_USE_WIN32 973#if EV_USE_INOTIFY
757 if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods); 974 fs_fd = -2;
975#endif
976
977#if EV_USE_PORT
978 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
758#endif 979#endif
759#if EV_USE_KQUEUE 980#if EV_USE_KQUEUE
760 if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods); 981 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
761#endif 982#endif
762#if EV_USE_EPOLL 983#if EV_USE_EPOLL
763 if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods); 984 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
764#endif 985#endif
765#if EV_USE_POLL 986#if EV_USE_POLL
766 if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods); 987 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
767#endif 988#endif
768#if EV_USE_SELECT 989#if EV_USE_SELECT
769 if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods); 990 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
770#endif 991#endif
771 992
772 ev_init (&sigev, sigcb); 993 ev_init (&sigev, sigcb);
773 ev_set_priority (&sigev, EV_MAXPRI); 994 ev_set_priority (&sigev, EV_MAXPRI);
774 } 995 }
775} 996}
776 997
777void 998static void noinline
778loop_destroy (EV_P) 999loop_destroy (EV_P)
779{ 1000{
780 int i; 1001 int i;
781 1002
782#if EV_USE_WIN32 1003#if EV_USE_INOTIFY
783 if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A); 1004 if (fs_fd >= 0)
1005 close (fs_fd);
1006#endif
1007
1008 if (backend_fd >= 0)
1009 close (backend_fd);
1010
1011#if EV_USE_PORT
1012 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
784#endif 1013#endif
785#if EV_USE_KQUEUE 1014#if EV_USE_KQUEUE
786 if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A); 1015 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
787#endif 1016#endif
788#if EV_USE_EPOLL 1017#if EV_USE_EPOLL
789 if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A); 1018 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
790#endif 1019#endif
791#if EV_USE_POLL 1020#if EV_USE_POLL
792 if (method == EVMETHOD_POLL ) poll_destroy (EV_A); 1021 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
793#endif 1022#endif
794#if EV_USE_SELECT 1023#if EV_USE_SELECT
795 if (method == EVMETHOD_SELECT) select_destroy (EV_A); 1024 if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
796#endif 1025#endif
797 1026
798 for (i = NUMPRI; i--; ) 1027 for (i = NUMPRI; i--; )
1028 {
799 array_free (pending, [i]); 1029 array_free (pending, [i]);
1030#if EV_IDLE_ENABLE
1031 array_free (idle, [i]);
1032#endif
1033 }
800 1034
801 /* have to use the microsoft-never-gets-it-right macro */ 1035 /* have to use the microsoft-never-gets-it-right macro */
802 array_free_microshit (fdchange); 1036 array_free (fdchange, EMPTY);
803 array_free_microshit (timer); 1037 array_free (timer, EMPTY);
804 array_free_microshit (periodic); 1038#if EV_PERIODIC_ENABLE
805 array_free_microshit (idle); 1039 array_free (periodic, EMPTY);
806 array_free_microshit (prepare); 1040#endif
807 array_free_microshit (check); 1041 array_free (prepare, EMPTY);
1042 array_free (check, EMPTY);
808 1043
809 method = 0; 1044 backend = 0;
810} 1045}
811 1046
812static void 1047void inline_size infy_fork (EV_P);
1048
1049void inline_size
813loop_fork (EV_P) 1050loop_fork (EV_P)
814{ 1051{
1052#if EV_USE_PORT
1053 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1054#endif
1055#if EV_USE_KQUEUE
1056 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
1057#endif
815#if EV_USE_EPOLL 1058#if EV_USE_EPOLL
816 if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A); 1059 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
817#endif 1060#endif
818#if EV_USE_KQUEUE 1061#if EV_USE_INOTIFY
819 if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A); 1062 infy_fork (EV_A);
820#endif 1063#endif
821 1064
822 if (ev_is_active (&sigev)) 1065 if (ev_is_active (&sigev))
823 { 1066 {
824 /* default loop */ 1067 /* default loop */
… …
837 postfork = 0; 1080 postfork = 0;
838} 1081}
839 1082
840#if EV_MULTIPLICITY 1083#if EV_MULTIPLICITY
841struct ev_loop * 1084struct ev_loop *
842ev_loop_new (int methods) 1085ev_loop_new (unsigned int flags)
843{ 1086{
844 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 1087 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
845 1088
846 memset (loop, 0, sizeof (struct ev_loop)); 1089 memset (loop, 0, sizeof (struct ev_loop));
847 1090
848 loop_init (EV_A_ methods); 1091 loop_init (EV_A_ flags);
849 1092
850 if (ev_method (EV_A)) 1093 if (ev_backend (EV_A))
851 return loop; 1094 return loop;
852 1095
853 return 0; 1096 return 0;
854} 1097}
855 1098
… …
868 1111
869#endif 1112#endif
870 1113
871#if EV_MULTIPLICITY 1114#if EV_MULTIPLICITY
872struct ev_loop * 1115struct ev_loop *
1116ev_default_loop_init (unsigned int flags)
873#else 1117#else
874int 1118int
1119ev_default_loop (unsigned int flags)
875#endif 1120#endif
876ev_default_loop (int methods)
877{ 1121{
878 if (sigpipe [0] == sigpipe [1]) 1122 if (sigpipe [0] == sigpipe [1])
879 if (pipe (sigpipe)) 1123 if (pipe (sigpipe))
880 return 0; 1124 return 0;
881 1125
882 if (!default_loop) 1126 if (!ev_default_loop_ptr)
883 { 1127 {
884#if EV_MULTIPLICITY 1128#if EV_MULTIPLICITY
885 struct ev_loop *loop = default_loop = &default_loop_struct; 1129 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
886#else 1130#else
887 default_loop = 1; 1131 ev_default_loop_ptr = 1;
888#endif 1132#endif
889 1133
890 loop_init (EV_A_ methods); 1134 loop_init (EV_A_ flags);
891 1135
892 if (ev_method (EV_A)) 1136 if (ev_backend (EV_A))
893 { 1137 {
894 siginit (EV_A); 1138 siginit (EV_A);
895 1139
896#ifndef WIN32 1140#ifndef _WIN32
897 ev_signal_init (&childev, childcb, SIGCHLD); 1141 ev_signal_init (&childev, childcb, SIGCHLD);
898 ev_set_priority (&childev, EV_MAXPRI); 1142 ev_set_priority (&childev, EV_MAXPRI);
899 ev_signal_start (EV_A_ &childev); 1143 ev_signal_start (EV_A_ &childev);
900 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1144 ev_unref (EV_A); /* child watcher should not keep loop alive */
901#endif 1145#endif
902 } 1146 }
903 else 1147 else
904 default_loop = 0; 1148 ev_default_loop_ptr = 0;
905 } 1149 }
906 1150
907 return default_loop; 1151 return ev_default_loop_ptr;
908} 1152}
909 1153
910void 1154void
911ev_default_destroy (void) 1155ev_default_destroy (void)
912{ 1156{
913#if EV_MULTIPLICITY 1157#if EV_MULTIPLICITY
914 struct ev_loop *loop = default_loop; 1158 struct ev_loop *loop = ev_default_loop_ptr;
915#endif 1159#endif
916 1160
917#ifndef WIN32 1161#ifndef _WIN32
918 ev_ref (EV_A); /* child watcher */ 1162 ev_ref (EV_A); /* child watcher */
919 ev_signal_stop (EV_A_ &childev); 1163 ev_signal_stop (EV_A_ &childev);
920#endif 1164#endif
921 1165
922 ev_ref (EV_A); /* signal watcher */ 1166 ev_ref (EV_A); /* signal watcher */
… …
930 1174
931void 1175void
932ev_default_fork (void) 1176ev_default_fork (void)
933{ 1177{
934#if EV_MULTIPLICITY 1178#if EV_MULTIPLICITY
935 struct ev_loop *loop = default_loop; 1179 struct ev_loop *loop = ev_default_loop_ptr;
936#endif 1180#endif
937 1181
938 if (method) 1182 if (backend)
939 postfork = 1; 1183 postfork = 1;
940} 1184}
941 1185
942/*****************************************************************************/ 1186/*****************************************************************************/
943 1187
944static int 1188void
945any_pending (EV_P) 1189ev_invoke (EV_P_ void *w, int revents)
946{ 1190{
947 int pri; 1191 EV_CB_INVOKE ((W)w, revents);
948
949 for (pri = NUMPRI; pri--; )
950 if (pendingcnt [pri])
951 return 1;
952
953 return 0;
954} 1192}
955 1193
956static void 1194void inline_speed
957call_pending (EV_P) 1195call_pending (EV_P)
958{ 1196{
959 int pri; 1197 int pri;
960 1198
961 for (pri = NUMPRI; pri--; ) 1199 for (pri = NUMPRI; pri--; )
962 while (pendingcnt [pri]) 1200 while (pendingcnt [pri])
963 { 1201 {
964 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 1202 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
965 1203
966 if (p->w) 1204 if (expect_true (p->w))
967 { 1205 {
1206 /*assert (("non-pending watcher on pending list", p->w->pending));*/
1207
968 p->w->pending = 0; 1208 p->w->pending = 0;
969 EV_CB_INVOKE (p->w, p->events); 1209 EV_CB_INVOKE (p->w, p->events);
970 } 1210 }
971 } 1211 }
972} 1212}
973 1213
974static void 1214void inline_size
975timers_reify (EV_P) 1215timers_reify (EV_P)
976{ 1216{
977 while (timercnt && ((WT)timers [0])->at <= mn_now) 1217 while (timercnt && ((WT)timers [0])->at <= mn_now)
978 { 1218 {
979 struct ev_timer *w = timers [0]; 1219 ev_timer *w = (ev_timer *)timers [0];
980 1220
981 assert (("inactive timer on timer heap detected", ev_is_active (w))); 1221 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
982 1222
983 /* first reschedule or stop timer */ 1223 /* first reschedule or stop timer */
984 if (w->repeat) 1224 if (w->repeat)
985 { 1225 {
986 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 1226 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1227
987 ((WT)w)->at = mn_now + w->repeat; 1228 ((WT)w)->at += w->repeat;
1229 if (((WT)w)->at < mn_now)
1230 ((WT)w)->at = mn_now;
1231
988 downheap ((WT *)timers, timercnt, 0); 1232 downheap (timers, timercnt, 0);
989 } 1233 }
990 else 1234 else
991 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ 1235 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
992 1236
993 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); 1237 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
994 } 1238 }
995} 1239}
996 1240
997static void 1241#if EV_PERIODIC_ENABLE
1242void inline_size
998periodics_reify (EV_P) 1243periodics_reify (EV_P)
999{ 1244{
1000 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now) 1245 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1001 { 1246 {
1002 struct ev_periodic *w = periodics [0]; 1247 ev_periodic *w = (ev_periodic *)periodics [0];
1003 1248
1004 assert (("inactive timer on periodic heap detected", ev_is_active (w))); 1249 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1005 1250
1006 /* first reschedule or stop timer */ 1251 /* first reschedule or stop timer */
1007 if (w->reschedule_cb) 1252 if (w->reschedule_cb)
1008 { 1253 {
1009 ev_tstamp at = ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001); 1254 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1010
1011 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now)); 1255 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1012 downheap ((WT *)periodics, periodiccnt, 0); 1256 downheap (periodics, periodiccnt, 0);
1013 } 1257 }
1014 else if (w->interval) 1258 else if (w->interval)
1015 { 1259 {
1016 ((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval; 1260 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1261 if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
1017 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now)); 1262 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1018 downheap ((WT *)periodics, periodiccnt, 0); 1263 downheap (periodics, periodiccnt, 0);
1019 } 1264 }
1020 else 1265 else
1021 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 1266 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1022 1267
1023 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 1268 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1024 } 1269 }
1025} 1270}
1026 1271
1027static void 1272static void noinline
1028periodics_reschedule (EV_P) 1273periodics_reschedule (EV_P)
1029{ 1274{
1030 int i; 1275 int i;
1031 1276
1032 /* adjust periodics after time jump */ 1277 /* adjust periodics after time jump */
1033 for (i = 0; i < periodiccnt; ++i) 1278 for (i = 0; i < periodiccnt; ++i)
1034 { 1279 {
1035 struct ev_periodic *w = periodics [i]; 1280 ev_periodic *w = (ev_periodic *)periodics [i];
1036 1281
1037 if (w->reschedule_cb) 1282 if (w->reschedule_cb)
1038 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 1283 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1039 else if (w->interval) 1284 else if (w->interval)
1040 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval; 1285 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1041 } 1286 }
1042 1287
1043 /* now rebuild the heap */ 1288 /* now rebuild the heap */
1044 for (i = periodiccnt >> 1; i--; ) 1289 for (i = periodiccnt >> 1; i--; )
1045 downheap ((WT *)periodics, periodiccnt, i); 1290 downheap (periodics, periodiccnt, i);
1046} 1291}
1292#endif
1047 1293
1048inline int 1294#if EV_IDLE_ENABLE
1049time_update_monotonic (EV_P) 1295void inline_size
1296idle_reify (EV_P)
1050{ 1297{
1298 if (expect_false (idleall))
1299 {
1300 int pri;
1301
1302 for (pri = NUMPRI; pri--; )
1303 {
1304 if (pendingcnt [pri])
1305 break;
1306
1307 if (idlecnt [pri])
1308 {
1309 queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
1310 break;
1311 }
1312 }
1313 }
1314}
1315#endif
1316
1317void inline_speed
1318time_update (EV_P_ ev_tstamp max_block)
1319{
1320 int i;
1321
1322#if EV_USE_MONOTONIC
1323 if (expect_true (have_monotonic))
1324 {
1325 ev_tstamp odiff = rtmn_diff;
1326
1051 mn_now = get_clock (); 1327 mn_now = get_clock ();
1052 1328
1329 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
1330 /* interpolate in the meantime */
1053 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 1331 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1054 { 1332 {
1055 ev_rt_now = rtmn_diff + mn_now; 1333 ev_rt_now = rtmn_diff + mn_now;
1056 return 0; 1334 return;
1057 } 1335 }
1058 else 1336
1059 {
1060 now_floor = mn_now; 1337 now_floor = mn_now;
1061 ev_rt_now = ev_time (); 1338 ev_rt_now = ev_time ();
1062 return 1;
1063 }
1064}
1065 1339
1066static void 1340 /* loop a few times, before making important decisions.
1067time_update (EV_P) 1341 * on the choice of "4": one iteration isn't enough,
1068{ 1342 * in case we get preempted during the calls to
1069 int i; 1343 * ev_time and get_clock. a second call is almost guaranteed
1070 1344 * to succeed in that case, though. and looping a few more times
1071#if EV_USE_MONOTONIC 1345 * doesn't hurt either as we only do this on time-jumps or
1072 if (expect_true (have_monotonic)) 1346 * in the unlikely event of having been preempted here.
1073 { 1347 */
1074 if (time_update_monotonic (EV_A)) 1348 for (i = 4; --i; )
1075 { 1349 {
1076 ev_tstamp odiff = rtmn_diff;
1077
1078 for (i = 4; --i; ) /* loop a few times, before making important decisions */
1079 {
1080 rtmn_diff = ev_rt_now - mn_now; 1350 rtmn_diff = ev_rt_now - mn_now;
1081 1351
1082 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) 1352 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1083 return; /* all is well */ 1353 return; /* all is well */
1084 1354
1085 ev_rt_now = ev_time (); 1355 ev_rt_now = ev_time ();
1086 mn_now = get_clock (); 1356 mn_now = get_clock ();
1087 now_floor = mn_now; 1357 now_floor = mn_now;
1088 } 1358 }
1089 1359
1360# if EV_PERIODIC_ENABLE
1361 periodics_reschedule (EV_A);
1362# endif
1363 /* no timer adjustment, as the monotonic clock doesn't jump */
1364 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1365 }
1366 else
1367#endif
1368 {
1369 ev_rt_now = ev_time ();
1370
1371 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1372 {
1373#if EV_PERIODIC_ENABLE
1090 periodics_reschedule (EV_A); 1374 periodics_reschedule (EV_A);
1091 /* no timer adjustment, as the monotonic clock doesn't jump */
1092 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1093 }
1094 }
1095 else
1096#endif 1375#endif
1097 {
1098 ev_rt_now = ev_time ();
1099
1100 if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
1101 {
1102 periodics_reschedule (EV_A);
1103
1104 /* adjust timers. this is easy, as the offset is the same for all */ 1376 /* adjust timers. this is easy, as the offset is the same for all of them */
1105 for (i = 0; i < timercnt; ++i) 1377 for (i = 0; i < timercnt; ++i)
1106 ((WT)timers [i])->at += ev_rt_now - mn_now; 1378 ((WT)timers [i])->at += ev_rt_now - mn_now;
1107 } 1379 }
1108 1380
1109 mn_now = ev_rt_now; 1381 mn_now = ev_rt_now;
… …
1125static int loop_done; 1397static int loop_done;
1126 1398
1127void 1399void
1128ev_loop (EV_P_ int flags) 1400ev_loop (EV_P_ int flags)
1129{ 1401{
1130 double block;
1131 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0; 1402 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
1403 ? EVUNLOOP_ONE
1404 : EVUNLOOP_CANCEL;
1405
1406 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
1132 1407
1133 do 1408 do
1134 { 1409 {
1410#ifndef _WIN32
1411 if (expect_false (curpid)) /* penalise the forking check even more */
1412 if (expect_false (getpid () != curpid))
1413 {
1414 curpid = getpid ();
1415 postfork = 1;
1416 }
1417#endif
1418
1419#if EV_FORK_ENABLE
1420 /* we might have forked, so queue fork handlers */
1421 if (expect_false (postfork))
1422 if (forkcnt)
1423 {
1424 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1425 call_pending (EV_A);
1426 }
1427#endif
1428
1135 /* queue check watchers (and execute them) */ 1429 /* queue prepare watchers (and execute them) */
1136 if (expect_false (preparecnt)) 1430 if (expect_false (preparecnt))
1137 { 1431 {
1138 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 1432 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1139 call_pending (EV_A); 1433 call_pending (EV_A);
1140 } 1434 }
1141 1435
1436 if (expect_false (!activecnt))
1437 break;
1438
1142 /* we might have forked, so reify kernel state if necessary */ 1439 /* we might have forked, so reify kernel state if necessary */
1143 if (expect_false (postfork)) 1440 if (expect_false (postfork))
1144 loop_fork (EV_A); 1441 loop_fork (EV_A);
1145 1442
1146 /* update fd-related kernel structures */ 1443 /* update fd-related kernel structures */
1147 fd_reify (EV_A); 1444 fd_reify (EV_A);
1148 1445
1149 /* calculate blocking time */ 1446 /* calculate blocking time */
1447 {
1448 ev_tstamp block;
1150 1449
1151 /* we only need this for !monotonic clock or timers, but as we basically 1450 if (expect_false (flags & EVLOOP_NONBLOCK || idleall || !activecnt))
1152 always have timers, we just calculate it always */ 1451 block = 0.; /* do not block at all */
1153#if EV_USE_MONOTONIC
1154 if (expect_true (have_monotonic))
1155 time_update_monotonic (EV_A);
1156 else 1452 else
1157#endif
1158 { 1453 {
1159 ev_rt_now = ev_time (); 1454 /* update time to cancel out callback processing overhead */
1160 mn_now = ev_rt_now; 1455 time_update (EV_A_ 1e100);
1161 }
1162 1456
1163 if (flags & EVLOOP_NONBLOCK || idlecnt)
1164 block = 0.;
1165 else
1166 {
1167 block = MAX_BLOCKTIME; 1457 block = MAX_BLOCKTIME;
1168 1458
1169 if (timercnt) 1459 if (timercnt)
1170 { 1460 {
1171 ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge; 1461 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1172 if (block > to) block = to; 1462 if (block > to) block = to;
1173 } 1463 }
1174 1464
1465#if EV_PERIODIC_ENABLE
1175 if (periodiccnt) 1466 if (periodiccnt)
1176 { 1467 {
1177 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge; 1468 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1178 if (block > to) block = to; 1469 if (block > to) block = to;
1179 } 1470 }
1471#endif
1180 1472
1181 if (block < 0.) block = 0.; 1473 if (expect_false (block < 0.)) block = 0.;
1182 } 1474 }
1183 1475
1476 ++loop_count;
1184 method_poll (EV_A_ block); 1477 backend_poll (EV_A_ block);
1185 1478
1186 /* update ev_rt_now, do magic */ 1479 /* update ev_rt_now, do magic */
1187 time_update (EV_A); 1480 time_update (EV_A_ block);
1481 }
1188 1482
1189 /* queue pending timers and reschedule them */ 1483 /* queue pending timers and reschedule them */
1190 timers_reify (EV_A); /* relative timers called last */ 1484 timers_reify (EV_A); /* relative timers called last */
1485#if EV_PERIODIC_ENABLE
1191 periodics_reify (EV_A); /* absolute timers called first */ 1486 periodics_reify (EV_A); /* absolute timers called first */
1487#endif
1192 1488
1489#if EV_IDLE_ENABLE
1193 /* queue idle watchers unless io or timers are pending */ 1490 /* queue idle watchers unless other events are pending */
1194 if (idlecnt && !any_pending (EV_A)) 1491 idle_reify (EV_A);
1195 queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); 1492#endif
1196 1493
1197 /* queue check watchers, to be executed first */ 1494 /* queue check watchers, to be executed first */
1198 if (checkcnt) 1495 if (expect_false (checkcnt))
1199 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 1496 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1200 1497
1201 call_pending (EV_A); 1498 call_pending (EV_A);
1499
1202 } 1500 }
1203 while (activecnt && !loop_done); 1501 while (expect_true (activecnt && !loop_done));
1204 1502
1205 if (loop_done != 2) 1503 if (loop_done == EVUNLOOP_ONE)
1206 loop_done = 0; 1504 loop_done = EVUNLOOP_CANCEL;
1207} 1505}
1208 1506
1209void 1507void
1210ev_unloop (EV_P_ int how) 1508ev_unloop (EV_P_ int how)
1211{ 1509{
1212 loop_done = how; 1510 loop_done = how;
1213} 1511}
1214 1512
1215/*****************************************************************************/ 1513/*****************************************************************************/
1216 1514
1217inline void 1515void inline_size
1218wlist_add (WL *head, WL elem) 1516wlist_add (WL *head, WL elem)
1219{ 1517{
1220 elem->next = *head; 1518 elem->next = *head;
1221 *head = elem; 1519 *head = elem;
1222} 1520}
1223 1521
1224inline void 1522void inline_size
1225wlist_del (WL *head, WL elem) 1523wlist_del (WL *head, WL elem)
1226{ 1524{
1227 while (*head) 1525 while (*head)
1228 { 1526 {
1229 if (*head == elem) 1527 if (*head == elem)
… …
1234 1532
1235 head = &(*head)->next; 1533 head = &(*head)->next;
1236 } 1534 }
1237} 1535}
1238 1536
1239inline void 1537void inline_speed
1240ev_clear_pending (EV_P_ W w) 1538clear_pending (EV_P_ W w)
1241{ 1539{
1242 if (w->pending) 1540 if (w->pending)
1243 { 1541 {
1244 pendings [ABSPRI (w)][w->pending - 1].w = 0; 1542 pendings [ABSPRI (w)][w->pending - 1].w = 0;
1245 w->pending = 0; 1543 w->pending = 0;
1246 } 1544 }
1247} 1545}
1248 1546
1249inline void 1547int
1548ev_clear_pending (EV_P_ void *w)
1549{
1550 W w_ = (W)w;
1551 int pending = w_->pending;
1552
1553 if (expect_true (pending))
1554 {
1555 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
1556 w_->pending = 0;
1557 p->w = 0;
1558 return p->events;
1559 }
1560 else
1561 return 0;
1562}
1563
1564void inline_size
1565pri_adjust (EV_P_ W w)
1566{
1567 int pri = w->priority;
1568 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1569 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1570 w->priority = pri;
1571}
1572
1573void inline_speed
1250ev_start (EV_P_ W w, int active) 1574ev_start (EV_P_ W w, int active)
1251{ 1575{
1252 if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; 1576 pri_adjust (EV_A_ w);
1253 if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1254
1255 w->active = active; 1577 w->active = active;
1256 ev_ref (EV_A); 1578 ev_ref (EV_A);
1257} 1579}
1258 1580
1259inline void 1581void inline_size
1260ev_stop (EV_P_ W w) 1582ev_stop (EV_P_ W w)
1261{ 1583{
1262 ev_unref (EV_A); 1584 ev_unref (EV_A);
1263 w->active = 0; 1585 w->active = 0;
1264} 1586}
1265 1587
1266/*****************************************************************************/ 1588/*****************************************************************************/
1267 1589
1268void 1590void noinline
1269ev_io_start (EV_P_ struct ev_io *w) 1591ev_io_start (EV_P_ ev_io *w)
1270{ 1592{
1271 int fd = w->fd; 1593 int fd = w->fd;
1272 1594
1273 if (ev_is_active (w)) 1595 if (expect_false (ev_is_active (w)))
1274 return; 1596 return;
1275 1597
1276 assert (("ev_io_start called with negative fd", fd >= 0)); 1598 assert (("ev_io_start called with negative fd", fd >= 0));
1277 1599
1278 ev_start (EV_A_ (W)w, 1); 1600 ev_start (EV_A_ (W)w, 1);
… …
1280 wlist_add ((WL *)&anfds[fd].head, (WL)w); 1602 wlist_add ((WL *)&anfds[fd].head, (WL)w);
1281 1603
1282 fd_change (EV_A_ fd); 1604 fd_change (EV_A_ fd);
1283} 1605}
1284 1606
1285void 1607void noinline
1286ev_io_stop (EV_P_ struct ev_io *w) 1608ev_io_stop (EV_P_ ev_io *w)
1287{ 1609{
1288 ev_clear_pending (EV_A_ (W)w); 1610 clear_pending (EV_A_ (W)w);
1289 if (!ev_is_active (w)) 1611 if (expect_false (!ev_is_active (w)))
1290 return; 1612 return;
1613
1614 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1291 1615
1292 wlist_del ((WL *)&anfds[w->fd].head, (WL)w); 1616 wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
1293 ev_stop (EV_A_ (W)w); 1617 ev_stop (EV_A_ (W)w);
1294 1618
1295 fd_change (EV_A_ w->fd); 1619 fd_change (EV_A_ w->fd);
1296} 1620}
1297 1621
1298void 1622void noinline
1299ev_timer_start (EV_P_ struct ev_timer *w) 1623ev_timer_start (EV_P_ ev_timer *w)
1624{
1625 if (expect_false (ev_is_active (w)))
1626 return;
1627
1628 ((WT)w)->at += mn_now;
1629
1630 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1631
1632 ev_start (EV_A_ (W)w, ++timercnt);
1633 array_needsize (WT, timers, timermax, timercnt, EMPTY2);
1634 timers [timercnt - 1] = (WT)w;
1635 upheap (timers, timercnt - 1);
1636
1637 /*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
1638}
1639
1640void noinline
1641ev_timer_stop (EV_P_ ev_timer *w)
1642{
1643 clear_pending (EV_A_ (W)w);
1644 if (expect_false (!ev_is_active (w)))
1645 return;
1646
1647 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w));
1648
1649 {
1650 int active = ((W)w)->active;
1651
1652 if (expect_true (--active < --timercnt))
1653 {
1654 timers [active] = timers [timercnt];
1655 adjustheap (timers, timercnt, active);
1656 }
1657 }
1658
1659 ((WT)w)->at -= mn_now;
1660
1661 ev_stop (EV_A_ (W)w);
1662}
1663
1664void noinline
1665ev_timer_again (EV_P_ ev_timer *w)
1300{ 1666{
1301 if (ev_is_active (w)) 1667 if (ev_is_active (w))
1302 return;
1303
1304 ((WT)w)->at += mn_now;
1305
1306 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1307
1308 ev_start (EV_A_ (W)w, ++timercnt);
1309 array_needsize (struct ev_timer *, timers, timermax, timercnt, (void));
1310 timers [timercnt - 1] = w;
1311 upheap ((WT *)timers, timercnt - 1);
1312
1313 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1314}
1315
1316void
1317ev_timer_stop (EV_P_ struct ev_timer *w)
1318{
1319 ev_clear_pending (EV_A_ (W)w);
1320 if (!ev_is_active (w))
1321 return;
1322
1323 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1324
1325 if (((W)w)->active < timercnt--)
1326 {
1327 timers [((W)w)->active - 1] = timers [timercnt];
1328 downheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1329 }
1330
1331 ((WT)w)->at = w->repeat;
1332
1333 ev_stop (EV_A_ (W)w);
1334}
1335
1336void
1337ev_timer_again (EV_P_ struct ev_timer *w)
1338{
1339 if (ev_is_active (w))
1340 { 1668 {
1341 if (w->repeat) 1669 if (w->repeat)
1670 {
1671 ((WT)w)->at = mn_now + w->repeat;
1342 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1, mn_now + w->repeat); 1672 adjustheap (timers, timercnt, ((W)w)->active - 1);
1673 }
1343 else 1674 else
1344 ev_timer_stop (EV_A_ w); 1675 ev_timer_stop (EV_A_ w);
1345 } 1676 }
1346 else if (w->repeat) 1677 else if (w->repeat)
1678 {
1679 w->at = w->repeat;
1347 ev_timer_start (EV_A_ w); 1680 ev_timer_start (EV_A_ w);
1681 }
1348} 1682}
1349 1683
1350void 1684#if EV_PERIODIC_ENABLE
1685void noinline
1351ev_periodic_start (EV_P_ struct ev_periodic *w) 1686ev_periodic_start (EV_P_ ev_periodic *w)
1352{ 1687{
1353 if (ev_is_active (w)) 1688 if (expect_false (ev_is_active (w)))
1354 return; 1689 return;
1355 1690
1356 if (w->reschedule_cb) 1691 if (w->reschedule_cb)
1357 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 1692 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1358 else if (w->interval) 1693 else if (w->interval)
1359 { 1694 {
1360 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 1695 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1361 /* this formula differs from the one in periodic_reify because we do not always round up */ 1696 /* this formula differs from the one in periodic_reify because we do not always round up */
1362 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval; 1697 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1363 } 1698 }
1699 else
1700 ((WT)w)->at = w->offset;
1364 1701
1365 ev_start (EV_A_ (W)w, ++periodiccnt); 1702 ev_start (EV_A_ (W)w, ++periodiccnt);
1366 array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void)); 1703 array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2);
1367 periodics [periodiccnt - 1] = w; 1704 periodics [periodiccnt - 1] = (WT)w;
1368 upheap ((WT *)periodics, periodiccnt - 1); 1705 upheap (periodics, periodiccnt - 1);
1369 1706
1370 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1707 /*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
1371} 1708}
1372 1709
1373void 1710void noinline
1374ev_periodic_stop (EV_P_ struct ev_periodic *w) 1711ev_periodic_stop (EV_P_ ev_periodic *w)
1375{ 1712{
1376 ev_clear_pending (EV_A_ (W)w); 1713 clear_pending (EV_A_ (W)w);
1377 if (!ev_is_active (w)) 1714 if (expect_false (!ev_is_active (w)))
1378 return; 1715 return;
1379 1716
1380 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1717 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w));
1381 1718
1382 if (((W)w)->active < periodiccnt--) 1719 {
1720 int active = ((W)w)->active;
1721
1722 if (expect_true (--active < --periodiccnt))
1383 { 1723 {
1384 periodics [((W)w)->active - 1] = periodics [periodiccnt]; 1724 periodics [active] = periodics [periodiccnt];
1385 downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1); 1725 adjustheap (periodics, periodiccnt, active);
1386 } 1726 }
1727 }
1387 1728
1388 ev_stop (EV_A_ (W)w); 1729 ev_stop (EV_A_ (W)w);
1389} 1730}
1390 1731
1391void 1732void noinline
1392ev_periodic_again (EV_P_ struct ev_periodic *w) 1733ev_periodic_again (EV_P_ ev_periodic *w)
1393{ 1734{
1394 /* TODO: use adjustheap and recalculation */ 1735 /* TODO: use adjustheap and recalculation */
1395 ev_periodic_stop (EV_A_ w); 1736 ev_periodic_stop (EV_A_ w);
1396 ev_periodic_start (EV_A_ w); 1737 ev_periodic_start (EV_A_ w);
1397} 1738}
1398 1739#endif
1399void
1400ev_idle_start (EV_P_ struct ev_idle *w)
1401{
1402 if (ev_is_active (w))
1403 return;
1404
1405 ev_start (EV_A_ (W)w, ++idlecnt);
1406 array_needsize (struct ev_idle *, idles, idlemax, idlecnt, (void));
1407 idles [idlecnt - 1] = w;
1408}
1409
1410void
1411ev_idle_stop (EV_P_ struct ev_idle *w)
1412{
1413 ev_clear_pending (EV_A_ (W)w);
1414 if (ev_is_active (w))
1415 return;
1416
1417 idles [((W)w)->active - 1] = idles [--idlecnt];
1418 ev_stop (EV_A_ (W)w);
1419}
1420
1421void
1422ev_prepare_start (EV_P_ struct ev_prepare *w)
1423{
1424 if (ev_is_active (w))
1425 return;
1426
1427 ev_start (EV_A_ (W)w, ++preparecnt);
1428 array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, (void));
1429 prepares [preparecnt - 1] = w;
1430}
1431
1432void
1433ev_prepare_stop (EV_P_ struct ev_prepare *w)
1434{
1435 ev_clear_pending (EV_A_ (W)w);
1436 if (ev_is_active (w))
1437 return;
1438
1439 prepares [((W)w)->active - 1] = prepares [--preparecnt];
1440 ev_stop (EV_A_ (W)w);
1441}
1442
1443void
1444ev_check_start (EV_P_ struct ev_check *w)
1445{
1446 if (ev_is_active (w))
1447 return;
1448
1449 ev_start (EV_A_ (W)w, ++checkcnt);
1450 array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void));
1451 checks [checkcnt - 1] = w;
1452}
1453
1454void
1455ev_check_stop (EV_P_ struct ev_check *w)
1456{
1457 ev_clear_pending (EV_A_ (W)w);
1458 if (ev_is_active (w))
1459 return;
1460
1461 checks [((W)w)->active - 1] = checks [--checkcnt];
1462 ev_stop (EV_A_ (W)w);
1463}
1464 1740
1465#ifndef SA_RESTART 1741#ifndef SA_RESTART
1466# define SA_RESTART 0 1742# define SA_RESTART 0
1467#endif 1743#endif
1468 1744
1469void 1745void noinline
1470ev_signal_start (EV_P_ struct ev_signal *w) 1746ev_signal_start (EV_P_ ev_signal *w)
1471{ 1747{
1472#if EV_MULTIPLICITY 1748#if EV_MULTIPLICITY
1473 assert (("signal watchers are only supported in the default loop", loop == default_loop)); 1749 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1474#endif 1750#endif
1475 if (ev_is_active (w)) 1751 if (expect_false (ev_is_active (w)))
1476 return; 1752 return;
1477 1753
1478 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 1754 assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1479 1755
1756 {
1757#ifndef _WIN32
1758 sigset_t full, prev;
1759 sigfillset (&full);
1760 sigprocmask (SIG_SETMASK, &full, &prev);
1761#endif
1762
1763 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1764
1765#ifndef _WIN32
1766 sigprocmask (SIG_SETMASK, &prev, 0);
1767#endif
1768 }
1769
1480 ev_start (EV_A_ (W)w, 1); 1770 ev_start (EV_A_ (W)w, 1);
1481 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1482 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); 1771 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1483 1772
1484 if (!((WL)w)->next) 1773 if (!((WL)w)->next)
1485 { 1774 {
1486#if WIN32 1775#if _WIN32
1487 signal (w->signum, sighandler); 1776 signal (w->signum, sighandler);
1488#else 1777#else
1489 struct sigaction sa; 1778 struct sigaction sa;
1490 sa.sa_handler = sighandler; 1779 sa.sa_handler = sighandler;
1491 sigfillset (&sa.sa_mask); 1780 sigfillset (&sa.sa_mask);
… …
1493 sigaction (w->signum, &sa, 0); 1782 sigaction (w->signum, &sa, 0);
1494#endif 1783#endif
1495 } 1784 }
1496} 1785}
1497 1786
1498void 1787void noinline
1499ev_signal_stop (EV_P_ struct ev_signal *w) 1788ev_signal_stop (EV_P_ ev_signal *w)
1500{ 1789{
1501 ev_clear_pending (EV_A_ (W)w); 1790 clear_pending (EV_A_ (W)w);
1502 if (!ev_is_active (w)) 1791 if (expect_false (!ev_is_active (w)))
1503 return; 1792 return;
1504 1793
1505 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); 1794 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1506 ev_stop (EV_A_ (W)w); 1795 ev_stop (EV_A_ (W)w);
1507 1796
1508 if (!signals [w->signum - 1].head) 1797 if (!signals [w->signum - 1].head)
1509 signal (w->signum, SIG_DFL); 1798 signal (w->signum, SIG_DFL);
1510} 1799}
1511 1800
1512void 1801void
1513ev_child_start (EV_P_ struct ev_child *w) 1802ev_child_start (EV_P_ ev_child *w)
1514{ 1803{
1515#if EV_MULTIPLICITY 1804#if EV_MULTIPLICITY
1516 assert (("child watchers are only supported in the default loop", loop == default_loop)); 1805 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1517#endif 1806#endif
1518 if (ev_is_active (w)) 1807 if (expect_false (ev_is_active (w)))
1519 return; 1808 return;
1520 1809
1521 ev_start (EV_A_ (W)w, 1); 1810 ev_start (EV_A_ (W)w, 1);
1522 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1811 wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1523} 1812}
1524 1813
1525void 1814void
1526ev_child_stop (EV_P_ struct ev_child *w) 1815ev_child_stop (EV_P_ ev_child *w)
1527{ 1816{
1528 ev_clear_pending (EV_A_ (W)w); 1817 clear_pending (EV_A_ (W)w);
1529 if (ev_is_active (w)) 1818 if (expect_false (!ev_is_active (w)))
1530 return; 1819 return;
1531 1820
1532 wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1821 wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1533 ev_stop (EV_A_ (W)w); 1822 ev_stop (EV_A_ (W)w);
1534} 1823}
1535 1824
1825#if EV_STAT_ENABLE
1826
1827# ifdef _WIN32
1828# undef lstat
1829# define lstat(a,b) _stati64 (a,b)
1830# endif
1831
1832#define DEF_STAT_INTERVAL 5.0074891
1833#define MIN_STAT_INTERVAL 0.1074891
1834
1835static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
1836
1837#if EV_USE_INOTIFY
1838# define EV_INOTIFY_BUFSIZE 8192
1839
1840static void noinline
1841infy_add (EV_P_ ev_stat *w)
1842{
1843 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);
1844
1845 if (w->wd < 0)
1846 {
1847 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
1848
1849 /* monitor some parent directory for speedup hints */
1850 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
1851 {
1852 char path [4096];
1853 strcpy (path, w->path);
1854
1855 do
1856 {
1857 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
1858 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
1859
1860 char *pend = strrchr (path, '/');
1861
1862 if (!pend)
1863 break; /* whoops, no '/', complain to your admin */
1864
1865 *pend = 0;
1866 w->wd = inotify_add_watch (fs_fd, path, mask);
1867 }
1868 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
1869 }
1870 }
1871 else
1872 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
1873
1874 if (w->wd >= 0)
1875 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
1876}
1877
1878static void noinline
1879infy_del (EV_P_ ev_stat *w)
1880{
1881 int slot;
1882 int wd = w->wd;
1883
1884 if (wd < 0)
1885 return;
1886
1887 w->wd = -2;
1888 slot = wd & (EV_INOTIFY_HASHSIZE - 1);
1889 wlist_del (&fs_hash [slot].head, (WL)w);
1890
1891 /* remove this watcher, if others are watching it, they will rearm */
1892 inotify_rm_watch (fs_fd, wd);
1893}
1894
1895static void noinline
1896infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
1897{
1898 if (slot < 0)
1899 /* overflow, need to check for all hahs slots */
1900 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
1901 infy_wd (EV_A_ slot, wd, ev);
1902 else
1903 {
1904 WL w_;
1905
1906 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
1907 {
1908 ev_stat *w = (ev_stat *)w_;
1909 w_ = w_->next; /* lets us remove this watcher and all before it */
1910
1911 if (w->wd == wd || wd == -1)
1912 {
1913 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
1914 {
1915 w->wd = -1;
1916 infy_add (EV_A_ w); /* re-add, no matter what */
1917 }
1918
1919 stat_timer_cb (EV_A_ &w->timer, 0);
1920 }
1921 }
1922 }
1923}
1924
1925static void
1926infy_cb (EV_P_ ev_io *w, int revents)
1927{
1928 char buf [EV_INOTIFY_BUFSIZE];
1929 struct inotify_event *ev = (struct inotify_event *)buf;
1930 int ofs;
1931 int len = read (fs_fd, buf, sizeof (buf));
1932
1933 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
1934 infy_wd (EV_A_ ev->wd, ev->wd, ev);
1935}
1936
1937void inline_size
1938infy_init (EV_P)
1939{
1940 if (fs_fd != -2)
1941 return;
1942
1943 fs_fd = inotify_init ();
1944
1945 if (fs_fd >= 0)
1946 {
1947 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
1948 ev_set_priority (&fs_w, EV_MAXPRI);
1949 ev_io_start (EV_A_ &fs_w);
1950 }
1951}
1952
1953void inline_size
1954infy_fork (EV_P)
1955{
1956 int slot;
1957
1958 if (fs_fd < 0)
1959 return;
1960
1961 close (fs_fd);
1962 fs_fd = inotify_init ();
1963
1964 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
1965 {
1966 WL w_ = fs_hash [slot].head;
1967 fs_hash [slot].head = 0;
1968
1969 while (w_)
1970 {
1971 ev_stat *w = (ev_stat *)w_;
1972 w_ = w_->next; /* lets us add this watcher */
1973
1974 w->wd = -1;
1975
1976 if (fs_fd >= 0)
1977 infy_add (EV_A_ w); /* re-add, no matter what */
1978 else
1979 ev_timer_start (EV_A_ &w->timer);
1980 }
1981
1982 }
1983}
1984
1985#endif
1986
1987void
1988ev_stat_stat (EV_P_ ev_stat *w)
1989{
1990 if (lstat (w->path, &w->attr) < 0)
1991 w->attr.st_nlink = 0;
1992 else if (!w->attr.st_nlink)
1993 w->attr.st_nlink = 1;
1994}
1995
1996static void noinline
1997stat_timer_cb (EV_P_ ev_timer *w_, int revents)
1998{
1999 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2000
2001 /* we copy this here each the time so that */
2002 /* prev has the old value when the callback gets invoked */
2003 w->prev = w->attr;
2004 ev_stat_stat (EV_A_ w);
2005
2006 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2007 if (
2008 w->prev.st_dev != w->attr.st_dev
2009 || w->prev.st_ino != w->attr.st_ino
2010 || w->prev.st_mode != w->attr.st_mode
2011 || w->prev.st_nlink != w->attr.st_nlink
2012 || w->prev.st_uid != w->attr.st_uid
2013 || w->prev.st_gid != w->attr.st_gid
2014 || w->prev.st_rdev != w->attr.st_rdev
2015 || w->prev.st_size != w->attr.st_size
2016 || w->prev.st_atime != w->attr.st_atime
2017 || w->prev.st_mtime != w->attr.st_mtime
2018 || w->prev.st_ctime != w->attr.st_ctime
2019 ) {
2020 #if EV_USE_INOTIFY
2021 infy_del (EV_A_ w);
2022 infy_add (EV_A_ w);
2023 ev_stat_stat (EV_A_ w); /* avoid race... */
2024 #endif
2025
2026 ev_feed_event (EV_A_ w, EV_STAT);
2027 }
2028}
2029
2030void
2031ev_stat_start (EV_P_ ev_stat *w)
2032{
2033 if (expect_false (ev_is_active (w)))
2034 return;
2035
2036 /* since we use memcmp, we need to clear any padding data etc. */
2037 memset (&w->prev, 0, sizeof (ev_statdata));
2038 memset (&w->attr, 0, sizeof (ev_statdata));
2039
2040 ev_stat_stat (EV_A_ w);
2041
2042 if (w->interval < MIN_STAT_INTERVAL)
2043 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2044
2045 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
2046 ev_set_priority (&w->timer, ev_priority (w));
2047
2048#if EV_USE_INOTIFY
2049 infy_init (EV_A);
2050
2051 if (fs_fd >= 0)
2052 infy_add (EV_A_ w);
2053 else
2054#endif
2055 ev_timer_start (EV_A_ &w->timer);
2056
2057 ev_start (EV_A_ (W)w, 1);
2058}
2059
2060void
2061ev_stat_stop (EV_P_ ev_stat *w)
2062{
2063 clear_pending (EV_A_ (W)w);
2064 if (expect_false (!ev_is_active (w)))
2065 return;
2066
2067#if EV_USE_INOTIFY
2068 infy_del (EV_A_ w);
2069#endif
2070 ev_timer_stop (EV_A_ &w->timer);
2071
2072 ev_stop (EV_A_ (W)w);
2073}
2074#endif
2075
2076#if EV_IDLE_ENABLE
2077void
2078ev_idle_start (EV_P_ ev_idle *w)
2079{
2080 if (expect_false (ev_is_active (w)))
2081 return;
2082
2083 pri_adjust (EV_A_ (W)w);
2084
2085 {
2086 int active = ++idlecnt [ABSPRI (w)];
2087
2088 ++idleall;
2089 ev_start (EV_A_ (W)w, active);
2090
2091 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2092 idles [ABSPRI (w)][active - 1] = w;
2093 }
2094}
2095
2096void
2097ev_idle_stop (EV_P_ ev_idle *w)
2098{
2099 clear_pending (EV_A_ (W)w);
2100 if (expect_false (!ev_is_active (w)))
2101 return;
2102
2103 {
2104 int active = ((W)w)->active;
2105
2106 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2107 ((W)idles [ABSPRI (w)][active - 1])->active = active;
2108
2109 ev_stop (EV_A_ (W)w);
2110 --idleall;
2111 }
2112}
2113#endif
2114
2115void
2116ev_prepare_start (EV_P_ ev_prepare *w)
2117{
2118 if (expect_false (ev_is_active (w)))
2119 return;
2120
2121 ev_start (EV_A_ (W)w, ++preparecnt);
2122 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2123 prepares [preparecnt - 1] = w;
2124}
2125
2126void
2127ev_prepare_stop (EV_P_ ev_prepare *w)
2128{
2129 clear_pending (EV_A_ (W)w);
2130 if (expect_false (!ev_is_active (w)))
2131 return;
2132
2133 {
2134 int active = ((W)w)->active;
2135 prepares [active - 1] = prepares [--preparecnt];
2136 ((W)prepares [active - 1])->active = active;
2137 }
2138
2139 ev_stop (EV_A_ (W)w);
2140}
2141
2142void
2143ev_check_start (EV_P_ ev_check *w)
2144{
2145 if (expect_false (ev_is_active (w)))
2146 return;
2147
2148 ev_start (EV_A_ (W)w, ++checkcnt);
2149 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2150 checks [checkcnt - 1] = w;
2151}
2152
2153void
2154ev_check_stop (EV_P_ ev_check *w)
2155{
2156 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 checks [active - 1] = checks [--checkcnt];
2163 ((W)checks [active - 1])->active = active;
2164 }
2165
2166 ev_stop (EV_A_ (W)w);
2167}
2168
2169#if EV_EMBED_ENABLE
2170void noinline
2171ev_embed_sweep (EV_P_ ev_embed *w)
2172{
2173 ev_loop (w->loop, EVLOOP_NONBLOCK);
2174}
2175
2176static void
2177embed_cb (EV_P_ ev_io *io, int revents)
2178{
2179 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2180
2181 if (ev_cb (w))
2182 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2183 else
2184 ev_embed_sweep (loop, w);
2185}
2186
2187void
2188ev_embed_start (EV_P_ ev_embed *w)
2189{
2190 if (expect_false (ev_is_active (w)))
2191 return;
2192
2193 {
2194 struct ev_loop *loop = w->loop;
2195 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2196 ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
2197 }
2198
2199 ev_set_priority (&w->io, ev_priority (w));
2200 ev_io_start (EV_A_ &w->io);
2201
2202 ev_start (EV_A_ (W)w, 1);
2203}
2204
2205void
2206ev_embed_stop (EV_P_ ev_embed *w)
2207{
2208 clear_pending (EV_A_ (W)w);
2209 if (expect_false (!ev_is_active (w)))
2210 return;
2211
2212 ev_io_stop (EV_A_ &w->io);
2213
2214 ev_stop (EV_A_ (W)w);
2215}
2216#endif
2217
2218#if EV_FORK_ENABLE
2219void
2220ev_fork_start (EV_P_ ev_fork *w)
2221{
2222 if (expect_false (ev_is_active (w)))
2223 return;
2224
2225 ev_start (EV_A_ (W)w, ++forkcnt);
2226 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2227 forks [forkcnt - 1] = w;
2228}
2229
2230void
2231ev_fork_stop (EV_P_ ev_fork *w)
2232{
2233 clear_pending (EV_A_ (W)w);
2234 if (expect_false (!ev_is_active (w)))
2235 return;
2236
2237 {
2238 int active = ((W)w)->active;
2239 forks [active - 1] = forks [--forkcnt];
2240 ((W)forks [active - 1])->active = active;
2241 }
2242
2243 ev_stop (EV_A_ (W)w);
2244}
2245#endif
2246
1536/*****************************************************************************/ 2247/*****************************************************************************/
1537 2248
1538struct ev_once 2249struct ev_once
1539{ 2250{
1540 struct ev_io io; 2251 ev_io io;
1541 struct ev_timer to; 2252 ev_timer to;
1542 void (*cb)(int revents, void *arg); 2253 void (*cb)(int revents, void *arg);
1543 void *arg; 2254 void *arg;
1544}; 2255};
1545 2256
1546static void 2257static void
… …
1555 2266
1556 cb (revents, arg); 2267 cb (revents, arg);
1557} 2268}
1558 2269
1559static void 2270static void
1560once_cb_io (EV_P_ struct ev_io *w, int revents) 2271once_cb_io (EV_P_ ev_io *w, int revents)
1561{ 2272{
1562 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 2273 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1563} 2274}
1564 2275
1565static void 2276static void
1566once_cb_to (EV_P_ struct ev_timer *w, int revents) 2277once_cb_to (EV_P_ ev_timer *w, int revents)
1567{ 2278{
1568 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 2279 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1569} 2280}
1570 2281
1571void 2282void
1572ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 2283ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1573{ 2284{
1574 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 2285 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1575 2286
1576 if (!once) 2287 if (expect_false (!once))
2288 {
1577 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 2289 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1578 else 2290 return;
1579 { 2291 }
2292
1580 once->cb = cb; 2293 once->cb = cb;
1581 once->arg = arg; 2294 once->arg = arg;
1582 2295
1583 ev_init (&once->io, once_cb_io); 2296 ev_init (&once->io, once_cb_io);
1584 if (fd >= 0) 2297 if (fd >= 0)
1585 { 2298 {
1586 ev_io_set (&once->io, fd, events); 2299 ev_io_set (&once->io, fd, events);
1587 ev_io_start (EV_A_ &once->io); 2300 ev_io_start (EV_A_ &once->io);
1588 } 2301 }
1589 2302
1590 ev_init (&once->to, once_cb_to); 2303 ev_init (&once->to, once_cb_to);
1591 if (timeout >= 0.) 2304 if (timeout >= 0.)
1592 { 2305 {
1593 ev_timer_set (&once->to, timeout, 0.); 2306 ev_timer_set (&once->to, timeout, 0.);
1594 ev_timer_start (EV_A_ &once->to); 2307 ev_timer_start (EV_A_ &once->to);
1595 }
1596 } 2308 }
1597} 2309}
1598 2310
2311#ifdef __cplusplus
2312}
2313#endif
2314

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