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Comparing libev/ev.c (file contents):
Revision 1.72 by root, Tue Nov 6 16:09:37 2007 UTC vs.
Revision 1.163 by root, Wed Dec 5 13:54:36 2007 UTC

… …
26 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
29 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 */ 30 */
31
32#ifdef __cplusplus
33extern "C" {
34#endif
35
31#ifndef EV_STANDALONE 36#ifndef EV_STANDALONE
37# ifdef EV_CONFIG_H
38# include EV_CONFIG_H
39# else
32# include "config.h" 40# include "config.h"
41# endif
33 42
34# if HAVE_CLOCK_GETTIME 43# if HAVE_CLOCK_GETTIME
44# ifndef EV_USE_MONOTONIC
35# define EV_USE_MONOTONIC 1 45# define EV_USE_MONOTONIC 1
46# endif
47# ifndef EV_USE_REALTIME
36# define EV_USE_REALTIME 1 48# define EV_USE_REALTIME 1
49# endif
50# else
51# ifndef EV_USE_MONOTONIC
52# define EV_USE_MONOTONIC 0
53# endif
54# ifndef EV_USE_REALTIME
55# define EV_USE_REALTIME 0
56# endif
37# endif 57# endif
38 58
59# ifndef EV_USE_SELECT
39# if HAVE_SELECT && HAVE_SYS_SELECT_H 60# if HAVE_SELECT && HAVE_SYS_SELECT_H
40# define EV_USE_SELECT 1 61# define EV_USE_SELECT 1
62# else
63# define EV_USE_SELECT 0
64# endif
41# endif 65# endif
42 66
67# ifndef EV_USE_POLL
43# if HAVE_POLL && HAVE_POLL_H 68# if HAVE_POLL && HAVE_POLL_H
44# define EV_USE_POLL 1 69# define EV_USE_POLL 1
70# else
71# define EV_USE_POLL 0
72# endif
45# endif 73# endif
46 74
75# ifndef EV_USE_EPOLL
47# if HAVE_EPOLL && HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H 76# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
48# define EV_USE_EPOLL 1 77# define EV_USE_EPOLL 1
78# else
79# define EV_USE_EPOLL 0
80# endif
49# endif 81# endif
50 82
83# ifndef EV_USE_KQUEUE
51# if HAVE_KQUEUE && HAVE_WORKING_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H 84# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H
52# define EV_USE_KQUEUE 1 85# define EV_USE_KQUEUE 1
86# else
87# define EV_USE_KQUEUE 0
88# endif
89# endif
90
91# ifndef EV_USE_PORT
92# if HAVE_PORT_H && HAVE_PORT_CREATE
93# define EV_USE_PORT 1
94# else
95# define EV_USE_PORT 0
96# endif
97# endif
98
99# ifndef EV_USE_INOTIFY
100# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
101# define EV_USE_INOTIFY 1
102# else
103# define EV_USE_INOTIFY 0
104# endif
53# endif 105# endif
54 106
55#endif 107#endif
56 108
57#include <math.h> 109#include <math.h>
… …
66#include <sys/types.h> 118#include <sys/types.h>
67#include <time.h> 119#include <time.h>
68 120
69#include <signal.h> 121#include <signal.h>
70 122
123#ifdef EV_H
124# include EV_H
125#else
126# include "ev.h"
127#endif
128
71#ifndef WIN32 129#ifndef _WIN32
72# include <unistd.h>
73# include <sys/time.h> 130# include <sys/time.h>
74# include <sys/wait.h> 131# include <sys/wait.h>
132# include <unistd.h>
133#else
134# define WIN32_LEAN_AND_MEAN
135# include <windows.h>
136# ifndef EV_SELECT_IS_WINSOCKET
137# define EV_SELECT_IS_WINSOCKET 1
75#endif 138# endif
139#endif
140
76/**/ 141/**/
77 142
78#ifndef EV_USE_MONOTONIC 143#ifndef EV_USE_MONOTONIC
79# define EV_USE_MONOTONIC 1 144# define EV_USE_MONOTONIC 0
145#endif
146
147#ifndef EV_USE_REALTIME
148# define EV_USE_REALTIME 0
80#endif 149#endif
81 150
82#ifndef EV_USE_SELECT 151#ifndef EV_USE_SELECT
83# define EV_USE_SELECT 1 152# define EV_USE_SELECT 1
84#endif 153#endif
85 154
86#ifndef EV_USE_POLL 155#ifndef EV_USE_POLL
87# define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */ 156# ifdef _WIN32
157# define EV_USE_POLL 0
158# else
159# define EV_USE_POLL 1
160# endif
88#endif 161#endif
89 162
90#ifndef EV_USE_EPOLL 163#ifndef EV_USE_EPOLL
91# define EV_USE_EPOLL 0 164# define EV_USE_EPOLL 0
92#endif 165#endif
93 166
94#ifndef EV_USE_KQUEUE 167#ifndef EV_USE_KQUEUE
95# define EV_USE_KQUEUE 0 168# define EV_USE_KQUEUE 0
96#endif 169#endif
97 170
171#ifndef EV_USE_PORT
172# define EV_USE_PORT 0
173#endif
174
98#ifndef EV_USE_WIN32 175#ifndef EV_USE_INOTIFY
99# ifdef WIN32 176# define EV_USE_INOTIFY 0
100# define EV_USE_WIN32 0 /* it does not exist, use select */ 177#endif
101# undef EV_USE_SELECT 178
102# define EV_USE_SELECT 1 179#ifndef EV_PID_HASHSIZE
180# if EV_MINIMAL
181# define EV_PID_HASHSIZE 1
103# else 182# else
104# define EV_USE_WIN32 0 183# define EV_PID_HASHSIZE 16
105# endif 184# endif
106#endif 185#endif
107 186
108#ifndef EV_USE_REALTIME 187#ifndef EV_INOTIFY_HASHSIZE
109# define EV_USE_REALTIME 1 188# if EV_MINIMAL
189# define EV_INOTIFY_HASHSIZE 1
190# else
191# define EV_INOTIFY_HASHSIZE 16
192# endif
110#endif 193#endif
111 194
112/**/ 195/**/
113 196
114#ifndef CLOCK_MONOTONIC 197#ifndef CLOCK_MONOTONIC
… …
119#ifndef CLOCK_REALTIME 202#ifndef CLOCK_REALTIME
120# undef EV_USE_REALTIME 203# undef EV_USE_REALTIME
121# define EV_USE_REALTIME 0 204# define EV_USE_REALTIME 0
122#endif 205#endif
123 206
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
124/**/ 219/**/
125 220
126#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 221#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) */ 222#define MAX_BLOCKTIME 59.743 /* 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 */ 223/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds */
130
131#include "ev.h"
132 224
133#if __GNUC__ >= 3 225#if __GNUC__ >= 3
134# 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
135# 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
136#else 235#else
137# define expect(expr,value) (expr) 236# define expect(expr,value) (expr)
237# define inline_speed static
138# define inline static 238# define inline_size static
239# define noinline
139#endif 240#endif
140 241
141#define expect_false(expr) expect ((expr) != 0, 0) 242#define expect_false(expr) expect ((expr) != 0, 0)
142#define expect_true(expr) expect ((expr) != 0, 1) 243#define expect_true(expr) expect ((expr) != 0, 1)
143 244
144#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 245#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
145#define ABSPRI(w) ((w)->priority - EV_MINPRI) 246#define ABSPRI(w) ((w)->priority - EV_MINPRI)
146 247
248#define EMPTY0 /* required for microsofts broken pseudo-c compiler */
249#define EMPTY2(a,b) /* used to suppress some warnings */
250
147typedef struct ev_watcher *W; 251typedef ev_watcher *W;
148typedef struct ev_watcher_list *WL; 252typedef ev_watcher_list *WL;
149typedef struct ev_watcher_time *WT; 253typedef ev_watcher_time *WT;
150 254
151static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 255static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
152 256
153#if WIN32 257#ifdef _WIN32
154/* note: the comment below could not be substantiated, but what would I care */ 258# include "ev_win32.c"
155/* MSDN says this is required to handle SIGFPE */
156volatile double SIGFPE_REQ = 0.0f;
157
158static int
159ev_socketpair_tcp (int filedes [2])
160{
161 struct sockaddr_in addr = { 0 };
162 int addr_size = sizeof (addr);
163 SOCKET listener;
164 SOCKET sock [2] = { -1, -1 };
165
166 if ((listener = socket (AF_INET, SOCK_STREAM, 0)) == INVALID_SOCKET)
167 return -1;
168
169 addr.sin_family = AF_INET;
170 addr.sin_addr.s_addr = htonl (INADDR_LOOPBACK);
171 addr.sin_port = 0;
172
173 if (bind (listener, (struct sockaddr *)&addr, addr_size))
174 goto fail;
175
176 if (getsockname(listener, (struct sockaddr *)&addr, &addr_size))
177 goto fail;
178
179 if (listen (listener, 1))
180 goto fail;
181
182 if ((sock [0] = socket (AF_INET, SOCK_STREAM, 0)) == INVALID_SOCKET)
183 goto fail;
184
185 if (connect (sock[0], (struct sockaddr *)&addr, addr_size))
186 goto fail;
187
188 if ((sock[1] = accept (listener, 0, 0)) < 0)
189 goto fail;
190
191 closesocket (listener);
192
193 filedes [0] = sock [0];
194 filedes [1] = sock [1];
195
196 return 0;
197
198fail:
199 closesocket (listener);
200
201 if (sock [0] != INVALID_SOCKET) closesocket (sock [0]);
202 if (sock [1] != INVALID_SOCKET) closesocket (sock [1]);
203
204 return -1;
205}
206
207# define ev_pipe(filedes) ev_socketpair_tcp (filedes)
208#else
209# define ev_pipe(filedes) pipe (filedes)
210#endif 259#endif
211 260
212/*****************************************************************************/ 261/*****************************************************************************/
213 262
214static void (*syserr_cb)(const char *msg); 263static void (*syserr_cb)(const char *msg);
215 264
265void
216void ev_set_syserr_cb (void (*cb)(const char *msg)) 266ev_set_syserr_cb (void (*cb)(const char *msg))
217{ 267{
218 syserr_cb = cb; 268 syserr_cb = cb;
219} 269}
220 270
221static void 271static void noinline
222syserr (const char *msg) 272syserr (const char *msg)
223{ 273{
224 if (!msg) 274 if (!msg)
225 msg = "(libev) system error"; 275 msg = "(libev) system error";
226 276
… …
233 } 283 }
234} 284}
235 285
236static void *(*alloc)(void *ptr, long size); 286static void *(*alloc)(void *ptr, long size);
237 287
288void
238void ev_set_allocator (void *(*cb)(void *ptr, long size)) 289ev_set_allocator (void *(*cb)(void *ptr, long size))
239{ 290{
240 alloc = cb; 291 alloc = cb;
241} 292}
242 293
243static void * 294inline_speed void *
244ev_realloc (void *ptr, long size) 295ev_realloc (void *ptr, long size)
245{ 296{
246 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size); 297 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
247 298
248 if (!ptr && size) 299 if (!ptr && size)
… …
262typedef struct 313typedef struct
263{ 314{
264 WL head; 315 WL head;
265 unsigned char events; 316 unsigned char events;
266 unsigned char reify; 317 unsigned char reify;
318#if EV_SELECT_IS_WINSOCKET
319 SOCKET handle;
320#endif
267} ANFD; 321} ANFD;
268 322
269typedef struct 323typedef struct
270{ 324{
271 W w; 325 W w;
272 int events; 326 int events;
273} ANPENDING; 327} ANPENDING;
274 328
329#if EV_USE_INOTIFY
330typedef struct
331{
332 WL head;
333} ANFS;
334#endif
335
275#if EV_MULTIPLICITY 336#if EV_MULTIPLICITY
276 337
277struct ev_loop 338 struct ev_loop
278{ 339 {
340 ev_tstamp ev_rt_now;
341 #define ev_rt_now ((loop)->ev_rt_now)
279# define VAR(name,decl) decl; 342 #define VAR(name,decl) decl;
280# include "ev_vars.h" 343 #include "ev_vars.h"
281};
282# undef VAR 344 #undef VAR
345 };
283# include "ev_wrap.h" 346 #include "ev_wrap.h"
347
348 static struct ev_loop default_loop_struct;
349 struct ev_loop *ev_default_loop_ptr;
284 350
285#else 351#else
286 352
353 ev_tstamp ev_rt_now;
287# define VAR(name,decl) static decl; 354 #define VAR(name,decl) static decl;
288# include "ev_vars.h" 355 #include "ev_vars.h"
289# undef VAR 356 #undef VAR
357
358 static int ev_default_loop_ptr;
290 359
291#endif 360#endif
292 361
293/*****************************************************************************/ 362/*****************************************************************************/
294 363
295inline ev_tstamp 364ev_tstamp
296ev_time (void) 365ev_time (void)
297{ 366{
298#if EV_USE_REALTIME 367#if EV_USE_REALTIME
299 struct timespec ts; 368 struct timespec ts;
300 clock_gettime (CLOCK_REALTIME, &ts); 369 clock_gettime (CLOCK_REALTIME, &ts);
… …
304 gettimeofday (&tv, 0); 373 gettimeofday (&tv, 0);
305 return tv.tv_sec + tv.tv_usec * 1e-6; 374 return tv.tv_sec + tv.tv_usec * 1e-6;
306#endif 375#endif
307} 376}
308 377
309inline ev_tstamp 378ev_tstamp inline_size
310get_clock (void) 379get_clock (void)
311{ 380{
312#if EV_USE_MONOTONIC 381#if EV_USE_MONOTONIC
313 if (expect_true (have_monotonic)) 382 if (expect_true (have_monotonic))
314 { 383 {
… …
319#endif 388#endif
320 389
321 return ev_time (); 390 return ev_time ();
322} 391}
323 392
393#if EV_MULTIPLICITY
324ev_tstamp 394ev_tstamp
325ev_now (EV_P) 395ev_now (EV_P)
326{ 396{
327 return rt_now; 397 return ev_rt_now;
328} 398}
399#endif
329 400
330#define array_roundsize(base,n) ((n) | 4 & ~3) 401int inline_size
402array_nextsize (int elem, int cur, int cnt)
403{
404 int ncur = cur + 1;
331 405
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}
428
332#define array_needsize(base,cur,cnt,init) \ 429#define array_needsize(type,base,cur,cnt,init) \
333 if (expect_false ((cnt) > cur)) \ 430 if (expect_false ((cnt) > (cur))) \
334 { \ 431 { \
335 int newcnt = cur; \ 432 int ocur_ = (cur); \
336 do \ 433 (base) = (type *)array_realloc \
337 { \ 434 (sizeof (type), (base), &(cur), (cnt)); \
338 newcnt = array_roundsize (base, newcnt << 1); \ 435 init ((base) + (ocur_), (cur) - ocur_); \
339 } \
340 while ((cnt) > newcnt); \
341 \
342 base = ev_realloc (base, sizeof (*base) * (newcnt)); \
343 init (base + cur, newcnt - cur); \
344 cur = newcnt; \
345 } 436 }
346 437
438#if 0
347#define array_slim(stem) \ 439#define array_slim(type,stem) \
348 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 440 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
349 { \ 441 { \
350 stem ## max = array_roundsize (stem ## cnt >> 1); \ 442 stem ## max = array_roundsize (stem ## cnt >> 1); \
351 base = ev_realloc (base, sizeof (*base) * (stem ## max)); \ 443 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
352 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 444 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
353 } 445 }
354 446#endif
355/* microsoft's pseudo-c is quite far from C as the rest of the world and the standard knows it */
356/* bringing us everlasting joy in form of stupid extra macros that are not required in C */
357#define array_free_microshit(stem) \
358 ev_free (stem ## s); stem ## cnt = stem ## max = 0;
359 447
360#define array_free(stem, idx) \ 448#define array_free(stem, idx) \
361 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;
362 450
363/*****************************************************************************/ 451/*****************************************************************************/
364 452
365static 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
366anfds_init (ANFD *base, int count) 482anfds_init (ANFD *base, int count)
367{ 483{
368 while (count--) 484 while (count--)
369 { 485 {
370 base->head = 0; 486 base->head = 0;
… …
373 489
374 ++base; 490 ++base;
375 } 491 }
376} 492}
377 493
378static void 494void inline_speed
379event (EV_P_ W w, int events)
380{
381 if (w->pending)
382 {
383 pendings [ABSPRI (w)][w->pending - 1].events |= events;
384 return;
385 }
386
387 w->pending = ++pendingcnt [ABSPRI (w)];
388 array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], (void));
389 pendings [ABSPRI (w)][w->pending - 1].w = w;
390 pendings [ABSPRI (w)][w->pending - 1].events = events;
391}
392
393static void
394queue_events (EV_P_ W *events, int eventcnt, int type)
395{
396 int i;
397
398 for (i = 0; i < eventcnt; ++i)
399 event (EV_A_ events [i], type);
400}
401
402static void
403fd_event (EV_P_ int fd, int events) 495fd_event (EV_P_ int fd, int revents)
404{ 496{
405 ANFD *anfd = anfds + fd; 497 ANFD *anfd = anfds + fd;
406 struct ev_io *w; 498 ev_io *w;
407 499
408 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)
409 { 501 {
410 int ev = w->events & events; 502 int ev = w->events & revents;
411 503
412 if (ev) 504 if (ev)
413 event (EV_A_ (W)w, ev); 505 ev_feed_event (EV_A_ (W)w, ev);
414 } 506 }
415} 507}
416 508
417/*****************************************************************************/ 509void
510ev_feed_fd_event (EV_P_ int fd, int revents)
511{
512 fd_event (EV_A_ fd, revents);
513}
418 514
419static void 515void inline_size
420fd_reify (EV_P) 516fd_reify (EV_P)
421{ 517{
422 int i; 518 int i;
423 519
424 for (i = 0; i < fdchangecnt; ++i) 520 for (i = 0; i < fdchangecnt; ++i)
425 { 521 {
426 int fd = fdchanges [i]; 522 int fd = fdchanges [i];
427 ANFD *anfd = anfds + fd; 523 ANFD *anfd = anfds + fd;
428 struct ev_io *w; 524 ev_io *w;
429 525
430 int events = 0; 526 int events = 0;
431 527
432 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)
433 events |= w->events; 529 events |= w->events;
434 530
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
435 anfd->reify = 0; 540 anfd->reify = 0;
436 541
437 method_modify (EV_A_ fd, anfd->events, events); 542 backend_modify (EV_A_ fd, anfd->events, events);
438 anfd->events = events; 543 anfd->events = events;
439 } 544 }
440 545
441 fdchangecnt = 0; 546 fdchangecnt = 0;
442} 547}
443 548
444static void 549void inline_size
445fd_change (EV_P_ int fd) 550fd_change (EV_P_ int fd)
446{ 551{
447 if (anfds [fd].reify) 552 if (expect_false (anfds [fd].reify))
448 return; 553 return;
449 554
450 anfds [fd].reify = 1; 555 anfds [fd].reify = 1;
451 556
452 ++fdchangecnt; 557 ++fdchangecnt;
453 array_needsize (fdchanges, fdchangemax, fdchangecnt, (void)); 558 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
454 fdchanges [fdchangecnt - 1] = fd; 559 fdchanges [fdchangecnt - 1] = fd;
455} 560}
456 561
457static void 562void inline_speed
458fd_kill (EV_P_ int fd) 563fd_kill (EV_P_ int fd)
459{ 564{
460 struct ev_io *w; 565 ev_io *w;
461 566
462 while ((w = (struct ev_io *)anfds [fd].head)) 567 while ((w = (ev_io *)anfds [fd].head))
463 { 568 {
464 ev_io_stop (EV_A_ w); 569 ev_io_stop (EV_A_ w);
465 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);
466 } 571 }
467} 572}
468 573
469static int 574int inline_size
470fd_valid (int fd) 575fd_valid (int fd)
471{ 576{
472#ifdef WIN32 577#ifdef _WIN32
473 return !!win32_get_osfhandle (fd); 578 return _get_osfhandle (fd) != -1;
474#else 579#else
475 return fcntl (fd, F_GETFD) != -1; 580 return fcntl (fd, F_GETFD) != -1;
476#endif 581#endif
477} 582}
478 583
479/* called on EBADF to verify fds */ 584/* called on EBADF to verify fds */
480static void 585static void noinline
481fd_ebadf (EV_P) 586fd_ebadf (EV_P)
482{ 587{
483 int fd; 588 int fd;
484 589
485 for (fd = 0; fd < anfdmax; ++fd) 590 for (fd = 0; fd < anfdmax; ++fd)
… …
487 if (!fd_valid (fd) == -1 && errno == EBADF) 592 if (!fd_valid (fd) == -1 && errno == EBADF)
488 fd_kill (EV_A_ fd); 593 fd_kill (EV_A_ fd);
489} 594}
490 595
491/* 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 */
492static void 597static void noinline
493fd_enomem (EV_P) 598fd_enomem (EV_P)
494{ 599{
495 int fd; 600 int fd;
496 601
497 for (fd = anfdmax; fd--; ) 602 for (fd = anfdmax; fd--; )
… …
500 fd_kill (EV_A_ fd); 605 fd_kill (EV_A_ fd);
501 return; 606 return;
502 } 607 }
503} 608}
504 609
505/* 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 */
506static void 611static void noinline
507fd_rearm_all (EV_P) 612fd_rearm_all (EV_P)
508{ 613{
509 int fd; 614 int fd;
510 615
511 /* this should be highly optimised to not do anything but set a flag */
512 for (fd = 0; fd < anfdmax; ++fd) 616 for (fd = 0; fd < anfdmax; ++fd)
513 if (anfds [fd].events) 617 if (anfds [fd].events)
514 { 618 {
515 anfds [fd].events = 0; 619 anfds [fd].events = 0;
516 fd_change (EV_A_ fd); 620 fd_change (EV_A_ fd);
517 } 621 }
518} 622}
519 623
520/*****************************************************************************/ 624/*****************************************************************************/
521 625
522static void 626void inline_speed
523upheap (WT *heap, int k) 627upheap (WT *heap, int k)
524{ 628{
525 WT w = heap [k]; 629 WT w = heap [k];
526 630
527 while (k && heap [k >> 1]->at > w->at) 631 while (k && heap [k >> 1]->at > w->at)
… …
534 heap [k] = w; 638 heap [k] = w;
535 ((W)heap [k])->active = k + 1; 639 ((W)heap [k])->active = k + 1;
536 640
537} 641}
538 642
539static void 643void inline_speed
540downheap (WT *heap, int N, int k) 644downheap (WT *heap, int N, int k)
541{ 645{
542 WT w = heap [k]; 646 WT w = heap [k];
543 647
544 while (k < (N >> 1)) 648 while (k < (N >> 1))
… …
558 662
559 heap [k] = w; 663 heap [k] = w;
560 ((W)heap [k])->active = k + 1; 664 ((W)heap [k])->active = k + 1;
561} 665}
562 666
667void inline_size
668adjustheap (WT *heap, int N, int k)
669{
670 upheap (heap, k);
671 downheap (heap, N, k);
672}
673
563/*****************************************************************************/ 674/*****************************************************************************/
564 675
565typedef struct 676typedef struct
566{ 677{
567 WL head; 678 WL head;
… …
571static ANSIG *signals; 682static ANSIG *signals;
572static int signalmax; 683static int signalmax;
573 684
574static int sigpipe [2]; 685static int sigpipe [2];
575static sig_atomic_t volatile gotsig; 686static sig_atomic_t volatile gotsig;
576static struct ev_io sigev; 687static ev_io sigev;
577 688
578static void 689void inline_size
579signals_init (ANSIG *base, int count) 690signals_init (ANSIG *base, int count)
580{ 691{
581 while (count--) 692 while (count--)
582 { 693 {
583 base->head = 0; 694 base->head = 0;
… …
588} 699}
589 700
590static void 701static void
591sighandler (int signum) 702sighandler (int signum)
592{ 703{
593#if WIN32 704#if _WIN32
594 signal (signum, sighandler); 705 signal (signum, sighandler);
595#endif 706#endif
596 707
597 signals [signum - 1].gotsig = 1; 708 signals [signum - 1].gotsig = 1;
598 709
… …
603 write (sigpipe [1], &signum, 1); 714 write (sigpipe [1], &signum, 1);
604 errno = old_errno; 715 errno = old_errno;
605 } 716 }
606} 717}
607 718
719void noinline
720ev_feed_signal_event (EV_P_ int signum)
721{
722 WL w;
723
724#if EV_MULTIPLICITY
725 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
726#endif
727
728 --signum;
729
730 if (signum < 0 || signum >= signalmax)
731 return;
732
733 signals [signum].gotsig = 0;
734
735 for (w = signals [signum].head; w; w = w->next)
736 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
737}
738
608static void 739static void
609sigcb (EV_P_ struct ev_io *iow, int revents) 740sigcb (EV_P_ ev_io *iow, int revents)
610{ 741{
611 WL w;
612 int signum; 742 int signum;
613 743
614 read (sigpipe [0], &revents, 1); 744 read (sigpipe [0], &revents, 1);
615 gotsig = 0; 745 gotsig = 0;
616 746
617 for (signum = signalmax; signum--; ) 747 for (signum = signalmax; signum--; )
618 if (signals [signum].gotsig) 748 if (signals [signum].gotsig)
619 { 749 ev_feed_signal_event (EV_A_ signum + 1);
620 signals [signum].gotsig = 0;
621
622 for (w = signals [signum].head; w; w = w->next)
623 event (EV_A_ (W)w, EV_SIGNAL);
624 }
625} 750}
626 751
627static 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
628siginit (EV_P) 765siginit (EV_P)
629{ 766{
630#ifndef WIN32 767 fd_intern (sigpipe [0]);
631 fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC); 768 fd_intern (sigpipe [1]);
632 fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
633
634 /* rather than sort out wether we really need nb, set it */
635 fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
636 fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
637#endif
638 769
639 ev_io_set (&sigev, sigpipe [0], EV_READ); 770 ev_io_set (&sigev, sigpipe [0], EV_READ);
640 ev_io_start (EV_A_ &sigev); 771 ev_io_start (EV_A_ &sigev);
641 ev_unref (EV_A); /* child watcher should not keep loop alive */ 772 ev_unref (EV_A); /* child watcher should not keep loop alive */
642} 773}
643 774
644/*****************************************************************************/ 775/*****************************************************************************/
645 776
646static struct ev_child *childs [PID_HASHSIZE]; 777static ev_child *childs [EV_PID_HASHSIZE];
647 778
648#ifndef WIN32 779#ifndef _WIN32
649 780
650static struct ev_signal childev; 781static ev_signal childev;
651 782
652#ifndef WCONTINUED 783void inline_speed
653# define WCONTINUED 0
654#endif
655
656static void
657child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status) 784child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
658{ 785{
659 struct ev_child *w; 786 ev_child *w;
660 787
661 for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next) 788 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
662 if (w->pid == pid || !w->pid) 789 if (w->pid == pid || !w->pid)
663 { 790 {
664 ev_priority (w) = ev_priority (sw); /* need to do it *now* */ 791 ev_priority (w) = ev_priority (sw); /* need to do it *now* */
665 w->rpid = pid; 792 w->rpid = pid;
666 w->rstatus = status; 793 w->rstatus = status;
667 event (EV_A_ (W)w, EV_CHILD); 794 ev_feed_event (EV_A_ (W)w, EV_CHILD);
668 } 795 }
669} 796}
670 797
798#ifndef WCONTINUED
799# define WCONTINUED 0
800#endif
801
671static void 802static void
672childcb (EV_P_ struct ev_signal *sw, int revents) 803childcb (EV_P_ ev_signal *sw, int revents)
673{ 804{
674 int pid, status; 805 int pid, status;
675 806
807 /* some systems define WCONTINUED but then fail to support it (linux 2.4) */
676 if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) 808 if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
677 { 809 if (!WCONTINUED
810 || errno != EINVAL
811 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
812 return;
813
678 /* 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 */
679 event (EV_A_ (W)sw, EV_SIGNAL); 816 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
680 817
681 child_reap (EV_A_ sw, pid, pid, status); 818 child_reap (EV_A_ sw, pid, pid, status);
819 if (EV_PID_HASHSIZE > 1)
682 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 */
683 }
684} 821}
685 822
686#endif 823#endif
687 824
688/*****************************************************************************/ 825/*****************************************************************************/
689 826
827#if EV_USE_PORT
828# include "ev_port.c"
829#endif
690#if EV_USE_KQUEUE 830#if EV_USE_KQUEUE
691# include "ev_kqueue.c" 831# include "ev_kqueue.c"
692#endif 832#endif
693#if EV_USE_EPOLL 833#if EV_USE_EPOLL
694# include "ev_epoll.c" 834# include "ev_epoll.c"
… …
711{ 851{
712 return EV_VERSION_MINOR; 852 return EV_VERSION_MINOR;
713} 853}
714 854
715/* 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 */
716static int 856int inline_size
717enable_secure (void) 857enable_secure (void)
718{ 858{
719#ifdef WIN32 859#ifdef _WIN32
720 return 0; 860 return 0;
721#else 861#else
722 return getuid () != geteuid () 862 return getuid () != geteuid ()
723 || getgid () != getegid (); 863 || getgid () != getegid ();
724#endif 864#endif
725} 865}
726 866
727int 867unsigned int
728ev_method (EV_P) 868ev_supported_backends (void)
729{ 869{
730 return method; 870 unsigned int flags = 0;
731}
732 871
733static void 872 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
734loop_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)
735{ 883{
736 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)
737 { 923 {
738#if EV_USE_MONOTONIC 924#if EV_USE_MONOTONIC
739 { 925 {
740 struct timespec ts; 926 struct timespec ts;
741 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 927 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
742 have_monotonic = 1; 928 have_monotonic = 1;
743 } 929 }
744#endif 930#endif
745 931
746 rt_now = ev_time (); 932 ev_rt_now = ev_time ();
747 mn_now = get_clock (); 933 mn_now = get_clock ();
748 now_floor = mn_now; 934 now_floor = mn_now;
749 rtmn_diff = rt_now - mn_now; 935 rtmn_diff = ev_rt_now - mn_now;
750 936
751 if (methods == EVMETHOD_AUTO) 937 /* pid check not overridable via env */
752 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"))
753 methods = atoi (getenv ("LIBEV_METHODS")); 946 flags = atoi (getenv ("LIBEV_FLAGS"));
754 else
755 methods = EVMETHOD_ANY;
756 947
757 method = 0; 948 if (!(flags & 0x0000ffffUL))
949 flags |= ev_recommended_backends ();
950
951 backend = 0;
952 backend_fd = -1;
758#if EV_USE_WIN32 953#if EV_USE_INOTIFY
759 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);
760#endif 959#endif
761#if EV_USE_KQUEUE 960#if EV_USE_KQUEUE
762 if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods); 961 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
763#endif 962#endif
764#if EV_USE_EPOLL 963#if EV_USE_EPOLL
765 if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods); 964 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
766#endif 965#endif
767#if EV_USE_POLL 966#if EV_USE_POLL
768 if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods); 967 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
769#endif 968#endif
770#if EV_USE_SELECT 969#if EV_USE_SELECT
771 if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods); 970 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
772#endif 971#endif
773 972
774 ev_watcher_init (&sigev, sigcb); 973 ev_init (&sigev, sigcb);
775 ev_set_priority (&sigev, EV_MAXPRI); 974 ev_set_priority (&sigev, EV_MAXPRI);
776 } 975 }
777} 976}
778 977
779void 978static void noinline
780loop_destroy (EV_P) 979loop_destroy (EV_P)
781{ 980{
782 int i; 981 int i;
783 982
784#if EV_USE_WIN32 983#if EV_USE_INOTIFY
785 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);
786#endif 993#endif
787#if EV_USE_KQUEUE 994#if EV_USE_KQUEUE
788 if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A); 995 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
789#endif 996#endif
790#if EV_USE_EPOLL 997#if EV_USE_EPOLL
791 if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A); 998 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
792#endif 999#endif
793#if EV_USE_POLL 1000#if EV_USE_POLL
794 if (method == EVMETHOD_POLL ) poll_destroy (EV_A); 1001 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
795#endif 1002#endif
796#if EV_USE_SELECT 1003#if EV_USE_SELECT
797 if (method == EVMETHOD_SELECT) select_destroy (EV_A); 1004 if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
798#endif 1005#endif
799 1006
800 for (i = NUMPRI; i--; ) 1007 for (i = NUMPRI; i--; )
801 array_free (pending, [i]); 1008 array_free (pending, [i]);
802 1009
803 /* have to use the microsoft-never-gets-it-right macro */ 1010 /* have to use the microsoft-never-gets-it-right macro */
804 array_free_microshit (fdchange); 1011 array_free (fdchange, EMPTY0);
805 array_free_microshit (timer); 1012 array_free (timer, EMPTY0);
806 array_free_microshit (periodic); 1013#if EV_PERIODIC_ENABLE
807 array_free_microshit (idle); 1014 array_free (periodic, EMPTY0);
808 array_free_microshit (prepare); 1015#endif
809 array_free_microshit (check); 1016 array_free (idle, EMPTY0);
1017 array_free (prepare, EMPTY0);
1018 array_free (check, EMPTY0);
810 1019
811 method = 0; 1020 backend = 0;
812} 1021}
813 1022
814static void 1023void inline_size infy_fork (EV_P);
1024
1025void inline_size
815loop_fork (EV_P) 1026loop_fork (EV_P)
816{ 1027{
1028#if EV_USE_PORT
1029 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1030#endif
1031#if EV_USE_KQUEUE
1032 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
1033#endif
817#if EV_USE_EPOLL 1034#if EV_USE_EPOLL
818 if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A); 1035 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
819#endif 1036#endif
820#if EV_USE_KQUEUE 1037#if EV_USE_INOTIFY
821 if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A); 1038 infy_fork (EV_A);
822#endif 1039#endif
823 1040
824 if (ev_is_active (&sigev)) 1041 if (ev_is_active (&sigev))
825 { 1042 {
826 /* default loop */ 1043 /* default loop */
… …
828 ev_ref (EV_A); 1045 ev_ref (EV_A);
829 ev_io_stop (EV_A_ &sigev); 1046 ev_io_stop (EV_A_ &sigev);
830 close (sigpipe [0]); 1047 close (sigpipe [0]);
831 close (sigpipe [1]); 1048 close (sigpipe [1]);
832 1049
833 while (ev_pipe (sigpipe)) 1050 while (pipe (sigpipe))
834 syserr ("(libev) error creating pipe"); 1051 syserr ("(libev) error creating pipe");
835 1052
836 siginit (EV_A); 1053 siginit (EV_A);
837 } 1054 }
838 1055
839 postfork = 0; 1056 postfork = 0;
840} 1057}
841 1058
842#if EV_MULTIPLICITY 1059#if EV_MULTIPLICITY
843struct ev_loop * 1060struct ev_loop *
844ev_loop_new (int methods) 1061ev_loop_new (unsigned int flags)
845{ 1062{
846 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 1063 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
847 1064
848 memset (loop, 0, sizeof (struct ev_loop)); 1065 memset (loop, 0, sizeof (struct ev_loop));
849 1066
850 loop_init (EV_A_ methods); 1067 loop_init (EV_A_ flags);
851 1068
852 if (ev_method (EV_A)) 1069 if (ev_backend (EV_A))
853 return loop; 1070 return loop;
854 1071
855 return 0; 1072 return 0;
856} 1073}
857 1074
… …
869} 1086}
870 1087
871#endif 1088#endif
872 1089
873#if EV_MULTIPLICITY 1090#if EV_MULTIPLICITY
874struct ev_loop default_loop_struct;
875static struct ev_loop *default_loop;
876
877struct ev_loop * 1091struct ev_loop *
1092ev_default_loop_init (unsigned int flags)
878#else 1093#else
879static int default_loop;
880
881int 1094int
1095ev_default_loop (unsigned int flags)
882#endif 1096#endif
883ev_default_loop (int methods)
884{ 1097{
885 if (sigpipe [0] == sigpipe [1]) 1098 if (sigpipe [0] == sigpipe [1])
886 if (ev_pipe (sigpipe)) 1099 if (pipe (sigpipe))
887 return 0; 1100 return 0;
888 1101
889 if (!default_loop) 1102 if (!ev_default_loop_ptr)
890 { 1103 {
891#if EV_MULTIPLICITY 1104#if EV_MULTIPLICITY
892 struct ev_loop *loop = default_loop = &default_loop_struct; 1105 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
893#else 1106#else
894 default_loop = 1; 1107 ev_default_loop_ptr = 1;
895#endif 1108#endif
896 1109
897 loop_init (EV_A_ methods); 1110 loop_init (EV_A_ flags);
898 1111
899 if (ev_method (EV_A)) 1112 if (ev_backend (EV_A))
900 { 1113 {
901 siginit (EV_A); 1114 siginit (EV_A);
902 1115
903#ifndef WIN32 1116#ifndef _WIN32
904 ev_signal_init (&childev, childcb, SIGCHLD); 1117 ev_signal_init (&childev, childcb, SIGCHLD);
905 ev_set_priority (&childev, EV_MAXPRI); 1118 ev_set_priority (&childev, EV_MAXPRI);
906 ev_signal_start (EV_A_ &childev); 1119 ev_signal_start (EV_A_ &childev);
907 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1120 ev_unref (EV_A); /* child watcher should not keep loop alive */
908#endif 1121#endif
909 } 1122 }
910 else 1123 else
911 default_loop = 0; 1124 ev_default_loop_ptr = 0;
912 } 1125 }
913 1126
914 return default_loop; 1127 return ev_default_loop_ptr;
915} 1128}
916 1129
917void 1130void
918ev_default_destroy (void) 1131ev_default_destroy (void)
919{ 1132{
920#if EV_MULTIPLICITY 1133#if EV_MULTIPLICITY
921 struct ev_loop *loop = default_loop; 1134 struct ev_loop *loop = ev_default_loop_ptr;
922#endif 1135#endif
923 1136
924#ifndef WIN32 1137#ifndef _WIN32
925 ev_ref (EV_A); /* child watcher */ 1138 ev_ref (EV_A); /* child watcher */
926 ev_signal_stop (EV_A_ &childev); 1139 ev_signal_stop (EV_A_ &childev);
927#endif 1140#endif
928 1141
929 ev_ref (EV_A); /* signal watcher */ 1142 ev_ref (EV_A); /* signal watcher */
… …
937 1150
938void 1151void
939ev_default_fork (void) 1152ev_default_fork (void)
940{ 1153{
941#if EV_MULTIPLICITY 1154#if EV_MULTIPLICITY
942 struct ev_loop *loop = default_loop; 1155 struct ev_loop *loop = ev_default_loop_ptr;
943#endif 1156#endif
944 1157
945 if (method) 1158 if (backend)
946 postfork = 1; 1159 postfork = 1;
947} 1160}
948 1161
949/*****************************************************************************/ 1162/*****************************************************************************/
950 1163
951static void 1164int inline_size
1165any_pending (EV_P)
1166{
1167 int pri;
1168
1169 for (pri = NUMPRI; pri--; )
1170 if (pendingcnt [pri])
1171 return 1;
1172
1173 return 0;
1174}
1175
1176void inline_speed
952call_pending (EV_P) 1177call_pending (EV_P)
953{ 1178{
954 int pri; 1179 int pri;
955 1180
956 for (pri = NUMPRI; pri--; ) 1181 for (pri = NUMPRI; pri--; )
957 while (pendingcnt [pri]) 1182 while (pendingcnt [pri])
958 { 1183 {
959 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 1184 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
960 1185
961 if (p->w) 1186 if (expect_true (p->w))
962 { 1187 {
1188 /*assert (("non-pending watcher on pending list", p->w->pending));*/
1189
963 p->w->pending = 0; 1190 p->w->pending = 0;
964 p->w->cb (EV_A_ p->w, p->events); 1191 EV_CB_INVOKE (p->w, p->events);
965 } 1192 }
966 } 1193 }
967} 1194}
968 1195
969static void 1196void inline_size
970timers_reify (EV_P) 1197timers_reify (EV_P)
971{ 1198{
972 while (timercnt && ((WT)timers [0])->at <= mn_now) 1199 while (timercnt && ((WT)timers [0])->at <= mn_now)
973 { 1200 {
974 struct ev_timer *w = timers [0]; 1201 ev_timer *w = timers [0];
975 1202
976 assert (("inactive timer on timer heap detected", ev_is_active (w))); 1203 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
977 1204
978 /* first reschedule or stop timer */ 1205 /* first reschedule or stop timer */
979 if (w->repeat) 1206 if (w->repeat)
980 { 1207 {
981 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 1208 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1209
982 ((WT)w)->at = mn_now + w->repeat; 1210 ((WT)w)->at += w->repeat;
1211 if (((WT)w)->at < mn_now)
1212 ((WT)w)->at = mn_now;
1213
983 downheap ((WT *)timers, timercnt, 0); 1214 downheap ((WT *)timers, timercnt, 0);
984 } 1215 }
985 else 1216 else
986 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ 1217 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
987 1218
988 event (EV_A_ (W)w, EV_TIMEOUT); 1219 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
989 } 1220 }
990} 1221}
991 1222
992static void 1223#if EV_PERIODIC_ENABLE
1224void inline_size
993periodics_reify (EV_P) 1225periodics_reify (EV_P)
994{ 1226{
995 while (periodiccnt && ((WT)periodics [0])->at <= rt_now) 1227 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
996 { 1228 {
997 struct ev_periodic *w = periodics [0]; 1229 ev_periodic *w = periodics [0];
998 1230
999 assert (("inactive timer on periodic heap detected", ev_is_active (w))); 1231 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1000 1232
1001 /* first reschedule or stop timer */ 1233 /* first reschedule or stop timer */
1002 if (w->interval) 1234 if (w->reschedule_cb)
1003 { 1235 {
1236 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
1237 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1238 downheap ((WT *)periodics, periodiccnt, 0);
1239 }
1240 else if (w->interval)
1241 {
1004 ((WT)w)->at += floor ((rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval; 1242 ((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
1005 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > rt_now)); 1243 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1006 downheap ((WT *)periodics, periodiccnt, 0); 1244 downheap ((WT *)periodics, periodiccnt, 0);
1007 } 1245 }
1008 else 1246 else
1009 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 1247 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1010 1248
1011 event (EV_A_ (W)w, EV_PERIODIC); 1249 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1012 } 1250 }
1013} 1251}
1014 1252
1015static void 1253static void noinline
1016periodics_reschedule (EV_P) 1254periodics_reschedule (EV_P)
1017{ 1255{
1018 int i; 1256 int i;
1019 1257
1020 /* adjust periodics after time jump */ 1258 /* adjust periodics after time jump */
1021 for (i = 0; i < periodiccnt; ++i) 1259 for (i = 0; i < periodiccnt; ++i)
1022 { 1260 {
1023 struct ev_periodic *w = periodics [i]; 1261 ev_periodic *w = periodics [i];
1024 1262
1263 if (w->reschedule_cb)
1264 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1025 if (w->interval) 1265 else if (w->interval)
1026 {
1027 ev_tstamp diff = ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval; 1266 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
1028
1029 if (fabs (diff) >= 1e-4)
1030 {
1031 ev_periodic_stop (EV_A_ w);
1032 ev_periodic_start (EV_A_ w);
1033
1034 i = 0; /* restart loop, inefficient, but time jumps should be rare */
1035 }
1036 }
1037 } 1267 }
1038}
1039 1268
1040inline int 1269 /* now rebuild the heap */
1270 for (i = periodiccnt >> 1; i--; )
1271 downheap ((WT *)periodics, periodiccnt, i);
1272}
1273#endif
1274
1275int inline_size
1041time_update_monotonic (EV_P) 1276time_update_monotonic (EV_P)
1042{ 1277{
1043 mn_now = get_clock (); 1278 mn_now = get_clock ();
1044 1279
1045 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 1280 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1046 { 1281 {
1047 rt_now = rtmn_diff + mn_now; 1282 ev_rt_now = rtmn_diff + mn_now;
1048 return 0; 1283 return 0;
1049 } 1284 }
1050 else 1285 else
1051 { 1286 {
1052 now_floor = mn_now; 1287 now_floor = mn_now;
1053 rt_now = ev_time (); 1288 ev_rt_now = ev_time ();
1054 return 1; 1289 return 1;
1055 } 1290 }
1056} 1291}
1057 1292
1058static void 1293void inline_size
1059time_update (EV_P) 1294time_update (EV_P)
1060{ 1295{
1061 int i; 1296 int i;
1062 1297
1063#if EV_USE_MONOTONIC 1298#if EV_USE_MONOTONIC
… …
1065 { 1300 {
1066 if (time_update_monotonic (EV_A)) 1301 if (time_update_monotonic (EV_A))
1067 { 1302 {
1068 ev_tstamp odiff = rtmn_diff; 1303 ev_tstamp odiff = rtmn_diff;
1069 1304
1070 for (i = 4; --i; ) /* loop a few times, before making important decisions */ 1305 /* loop a few times, before making important decisions.
1306 * on the choice of "4": one iteration isn't enough,
1307 * in case we get preempted during the calls to
1308 * ev_time and get_clock. a second call is almost guaranteed
1309 * to succeed in that case, though. and looping a few more times
1310 * doesn't hurt either as we only do this on time-jumps or
1311 * in the unlikely event of having been preempted here.
1312 */
1313 for (i = 4; --i; )
1071 { 1314 {
1072 rtmn_diff = rt_now - mn_now; 1315 rtmn_diff = ev_rt_now - mn_now;
1073 1316
1074 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) 1317 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1075 return; /* all is well */ 1318 return; /* all is well */
1076 1319
1077 rt_now = ev_time (); 1320 ev_rt_now = ev_time ();
1078 mn_now = get_clock (); 1321 mn_now = get_clock ();
1079 now_floor = mn_now; 1322 now_floor = mn_now;
1080 } 1323 }
1081 1324
1325# if EV_PERIODIC_ENABLE
1082 periodics_reschedule (EV_A); 1326 periodics_reschedule (EV_A);
1327# endif
1083 /* no timer adjustment, as the monotonic clock doesn't jump */ 1328 /* no timer adjustment, as the monotonic clock doesn't jump */
1084 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */ 1329 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1085 } 1330 }
1086 } 1331 }
1087 else 1332 else
1088#endif 1333#endif
1089 { 1334 {
1090 rt_now = ev_time (); 1335 ev_rt_now = ev_time ();
1091 1336
1092 if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP)) 1337 if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
1093 { 1338 {
1339#if EV_PERIODIC_ENABLE
1094 periodics_reschedule (EV_A); 1340 periodics_reschedule (EV_A);
1341#endif
1095 1342
1096 /* adjust timers. this is easy, as the offset is the same for all */ 1343 /* adjust timers. this is easy, as the offset is the same for all of them */
1097 for (i = 0; i < timercnt; ++i) 1344 for (i = 0; i < timercnt; ++i)
1098 ((WT)timers [i])->at += rt_now - mn_now; 1345 ((WT)timers [i])->at += ev_rt_now - mn_now;
1099 } 1346 }
1100 1347
1101 mn_now = rt_now; 1348 mn_now = ev_rt_now;
1102 } 1349 }
1103} 1350}
1104 1351
1105void 1352void
1106ev_ref (EV_P) 1353ev_ref (EV_P)
… …
1117static int loop_done; 1364static int loop_done;
1118 1365
1119void 1366void
1120ev_loop (EV_P_ int flags) 1367ev_loop (EV_P_ int flags)
1121{ 1368{
1122 double block;
1123 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0; 1369 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
1370 ? EVUNLOOP_ONE
1371 : EVUNLOOP_CANCEL;
1372
1373 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
1124 1374
1125 do 1375 do
1126 { 1376 {
1377#ifndef _WIN32
1378 if (expect_false (curpid)) /* penalise the forking check even more */
1379 if (expect_false (getpid () != curpid))
1380 {
1381 curpid = getpid ();
1382 postfork = 1;
1383 }
1384#endif
1385
1386#if EV_FORK_ENABLE
1387 /* we might have forked, so queue fork handlers */
1388 if (expect_false (postfork))
1389 if (forkcnt)
1390 {
1391 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1392 call_pending (EV_A);
1393 }
1394#endif
1395
1127 /* queue check watchers (and execute them) */ 1396 /* queue check watchers (and execute them) */
1128 if (expect_false (preparecnt)) 1397 if (expect_false (preparecnt))
1129 { 1398 {
1130 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 1399 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1131 call_pending (EV_A); 1400 call_pending (EV_A);
1132 } 1401 }
1133 1402
1403 if (expect_false (!activecnt))
1404 break;
1405
1134 /* we might have forked, so reify kernel state if necessary */ 1406 /* we might have forked, so reify kernel state if necessary */
1135 if (expect_false (postfork)) 1407 if (expect_false (postfork))
1136 loop_fork (EV_A); 1408 loop_fork (EV_A);
1137 1409
1138 /* update fd-related kernel structures */ 1410 /* update fd-related kernel structures */
1139 fd_reify (EV_A); 1411 fd_reify (EV_A);
1140 1412
1141 /* calculate blocking time */ 1413 /* calculate blocking time */
1414 {
1415 ev_tstamp block;
1142 1416
1143 /* we only need this for !monotonic clockor timers, but as we basically 1417 if (expect_false (flags & EVLOOP_NONBLOCK || idlecnt || !activecnt))
1144 always have timers, we just calculate it always */ 1418 block = 0.; /* do not block at all */
1419 else
1420 {
1421 /* update time to cancel out callback processing overhead */
1145#if EV_USE_MONOTONIC 1422#if EV_USE_MONOTONIC
1146 if (expect_true (have_monotonic)) 1423 if (expect_true (have_monotonic))
1147 time_update_monotonic (EV_A); 1424 time_update_monotonic (EV_A);
1148 else 1425 else
1149#endif 1426#endif
1150 { 1427 {
1151 rt_now = ev_time (); 1428 ev_rt_now = ev_time ();
1152 mn_now = rt_now; 1429 mn_now = ev_rt_now;
1153 } 1430 }
1154 1431
1155 if (flags & EVLOOP_NONBLOCK || idlecnt)
1156 block = 0.;
1157 else
1158 {
1159 block = MAX_BLOCKTIME; 1432 block = MAX_BLOCKTIME;
1160 1433
1161 if (timercnt) 1434 if (timercnt)
1162 { 1435 {
1163 ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge; 1436 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1164 if (block > to) block = to; 1437 if (block > to) block = to;
1165 } 1438 }
1166 1439
1440#if EV_PERIODIC_ENABLE
1167 if (periodiccnt) 1441 if (periodiccnt)
1168 { 1442 {
1169 ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge; 1443 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1170 if (block > to) block = to; 1444 if (block > to) block = to;
1171 } 1445 }
1446#endif
1172 1447
1173 if (block < 0.) block = 0.; 1448 if (expect_false (block < 0.)) block = 0.;
1174 } 1449 }
1175 1450
1451 ++loop_count;
1176 method_poll (EV_A_ block); 1452 backend_poll (EV_A_ block);
1453 }
1177 1454
1178 /* update rt_now, do magic */ 1455 /* update ev_rt_now, do magic */
1179 time_update (EV_A); 1456 time_update (EV_A);
1180 1457
1181 /* queue pending timers and reschedule them */ 1458 /* queue pending timers and reschedule them */
1182 timers_reify (EV_A); /* relative timers called last */ 1459 timers_reify (EV_A); /* relative timers called last */
1460#if EV_PERIODIC_ENABLE
1183 periodics_reify (EV_A); /* absolute timers called first */ 1461 periodics_reify (EV_A); /* absolute timers called first */
1462#endif
1184 1463
1185 /* queue idle watchers unless io or timers are pending */ 1464 /* queue idle watchers unless other events are pending */
1186 if (!pendingcnt) 1465 if (idlecnt && !any_pending (EV_A))
1187 queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); 1466 queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
1188 1467
1189 /* queue check watchers, to be executed first */ 1468 /* queue check watchers, to be executed first */
1190 if (checkcnt) 1469 if (expect_false (checkcnt))
1191 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 1470 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1192 1471
1193 call_pending (EV_A); 1472 call_pending (EV_A);
1473
1194 } 1474 }
1195 while (activecnt && !loop_done); 1475 while (expect_true (activecnt && !loop_done));
1196 1476
1197 if (loop_done != 2) 1477 if (loop_done == EVUNLOOP_ONE)
1198 loop_done = 0; 1478 loop_done = EVUNLOOP_CANCEL;
1199} 1479}
1200 1480
1201void 1481void
1202ev_unloop (EV_P_ int how) 1482ev_unloop (EV_P_ int how)
1203{ 1483{
1204 loop_done = how; 1484 loop_done = how;
1205} 1485}
1206 1486
1207/*****************************************************************************/ 1487/*****************************************************************************/
1208 1488
1209inline void 1489void inline_size
1210wlist_add (WL *head, WL elem) 1490wlist_add (WL *head, WL elem)
1211{ 1491{
1212 elem->next = *head; 1492 elem->next = *head;
1213 *head = elem; 1493 *head = elem;
1214} 1494}
1215 1495
1216inline void 1496void inline_size
1217wlist_del (WL *head, WL elem) 1497wlist_del (WL *head, WL elem)
1218{ 1498{
1219 while (*head) 1499 while (*head)
1220 { 1500 {
1221 if (*head == elem) 1501 if (*head == elem)
… …
1226 1506
1227 head = &(*head)->next; 1507 head = &(*head)->next;
1228 } 1508 }
1229} 1509}
1230 1510
1231inline void 1511void inline_speed
1232ev_clear_pending (EV_P_ W w) 1512ev_clear_pending (EV_P_ W w)
1233{ 1513{
1234 if (w->pending) 1514 if (w->pending)
1235 { 1515 {
1236 pendings [ABSPRI (w)][w->pending - 1].w = 0; 1516 pendings [ABSPRI (w)][w->pending - 1].w = 0;
1237 w->pending = 0; 1517 w->pending = 0;
1238 } 1518 }
1239} 1519}
1240 1520
1241inline void 1521void inline_speed
1242ev_start (EV_P_ W w, int active) 1522ev_start (EV_P_ W w, int active)
1243{ 1523{
1244 if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; 1524 if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
1245 if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI; 1525 if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1246 1526
1247 w->active = active; 1527 w->active = active;
1248 ev_ref (EV_A); 1528 ev_ref (EV_A);
1249} 1529}
1250 1530
1251inline void 1531void inline_size
1252ev_stop (EV_P_ W w) 1532ev_stop (EV_P_ W w)
1253{ 1533{
1254 ev_unref (EV_A); 1534 ev_unref (EV_A);
1255 w->active = 0; 1535 w->active = 0;
1256} 1536}
1257 1537
1258/*****************************************************************************/ 1538/*****************************************************************************/
1259 1539
1260void 1540void
1261ev_io_start (EV_P_ struct ev_io *w) 1541ev_io_start (EV_P_ ev_io *w)
1262{ 1542{
1263 int fd = w->fd; 1543 int fd = w->fd;
1264 1544
1265 if (ev_is_active (w)) 1545 if (expect_false (ev_is_active (w)))
1266 return; 1546 return;
1267 1547
1268 assert (("ev_io_start called with negative fd", fd >= 0)); 1548 assert (("ev_io_start called with negative fd", fd >= 0));
1269 1549
1270 ev_start (EV_A_ (W)w, 1); 1550 ev_start (EV_A_ (W)w, 1);
1271 array_needsize (anfds, anfdmax, fd + 1, anfds_init); 1551 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1272 wlist_add ((WL *)&anfds[fd].head, (WL)w); 1552 wlist_add ((WL *)&anfds[fd].head, (WL)w);
1273 1553
1274 fd_change (EV_A_ fd); 1554 fd_change (EV_A_ fd);
1275} 1555}
1276 1556
1277void 1557void
1278ev_io_stop (EV_P_ struct ev_io *w) 1558ev_io_stop (EV_P_ ev_io *w)
1279{ 1559{
1280 ev_clear_pending (EV_A_ (W)w); 1560 ev_clear_pending (EV_A_ (W)w);
1281 if (!ev_is_active (w)) 1561 if (expect_false (!ev_is_active (w)))
1282 return; 1562 return;
1563
1564 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1283 1565
1284 wlist_del ((WL *)&anfds[w->fd].head, (WL)w); 1566 wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
1285 ev_stop (EV_A_ (W)w); 1567 ev_stop (EV_A_ (W)w);
1286 1568
1287 fd_change (EV_A_ w->fd); 1569 fd_change (EV_A_ w->fd);
1288} 1570}
1289 1571
1290void 1572void
1291ev_timer_start (EV_P_ struct ev_timer *w) 1573ev_timer_start (EV_P_ ev_timer *w)
1292{ 1574{
1293 if (ev_is_active (w)) 1575 if (expect_false (ev_is_active (w)))
1294 return; 1576 return;
1295 1577
1296 ((WT)w)->at += mn_now; 1578 ((WT)w)->at += mn_now;
1297 1579
1298 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 1580 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1299 1581
1300 ev_start (EV_A_ (W)w, ++timercnt); 1582 ev_start (EV_A_ (W)w, ++timercnt);
1301 array_needsize (timers, timermax, timercnt, (void)); 1583 array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);
1302 timers [timercnt - 1] = w; 1584 timers [timercnt - 1] = w;
1303 upheap ((WT *)timers, timercnt - 1); 1585 upheap ((WT *)timers, timercnt - 1);
1304 1586
1587 /*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
1588}
1589
1590void
1591ev_timer_stop (EV_P_ ev_timer *w)
1592{
1593 ev_clear_pending (EV_A_ (W)w);
1594 if (expect_false (!ev_is_active (w)))
1595 return;
1596
1305 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 1597 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1306}
1307 1598
1308void 1599 {
1309ev_timer_stop (EV_P_ struct ev_timer *w) 1600 int active = ((W)w)->active;
1310{
1311 ev_clear_pending (EV_A_ (W)w);
1312 if (!ev_is_active (w))
1313 return;
1314 1601
1315 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 1602 if (expect_true (--active < --timercnt))
1316
1317 if (((W)w)->active < timercnt--)
1318 { 1603 {
1319 timers [((W)w)->active - 1] = timers [timercnt]; 1604 timers [active] = timers [timercnt];
1320 downheap ((WT *)timers, timercnt, ((W)w)->active - 1); 1605 adjustheap ((WT *)timers, timercnt, active);
1321 } 1606 }
1607 }
1322 1608
1323 ((WT)w)->at = w->repeat; 1609 ((WT)w)->at -= mn_now;
1324 1610
1325 ev_stop (EV_A_ (W)w); 1611 ev_stop (EV_A_ (W)w);
1326} 1612}
1327 1613
1328void 1614void
1329ev_timer_again (EV_P_ struct ev_timer *w) 1615ev_timer_again (EV_P_ ev_timer *w)
1330{ 1616{
1331 if (ev_is_active (w)) 1617 if (ev_is_active (w))
1332 { 1618 {
1333 if (w->repeat) 1619 if (w->repeat)
1334 { 1620 {
1335 ((WT)w)->at = mn_now + w->repeat; 1621 ((WT)w)->at = mn_now + w->repeat;
1336 downheap ((WT *)timers, timercnt, ((W)w)->active - 1); 1622 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1337 } 1623 }
1338 else 1624 else
1339 ev_timer_stop (EV_A_ w); 1625 ev_timer_stop (EV_A_ w);
1340 } 1626 }
1341 else if (w->repeat) 1627 else if (w->repeat)
1628 {
1629 w->at = w->repeat;
1342 ev_timer_start (EV_A_ w); 1630 ev_timer_start (EV_A_ w);
1631 }
1343} 1632}
1344 1633
1634#if EV_PERIODIC_ENABLE
1345void 1635void
1346ev_periodic_start (EV_P_ struct ev_periodic *w) 1636ev_periodic_start (EV_P_ ev_periodic *w)
1347{ 1637{
1348 if (ev_is_active (w)) 1638 if (expect_false (ev_is_active (w)))
1349 return; 1639 return;
1350 1640
1641 if (w->reschedule_cb)
1642 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1643 else if (w->interval)
1644 {
1351 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 1645 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1352
1353 /* this formula differs from the one in periodic_reify because we do not always round up */ 1646 /* this formula differs from the one in periodic_reify because we do not always round up */
1354 if (w->interval)
1355 ((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval; 1647 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
1648 }
1356 1649
1357 ev_start (EV_A_ (W)w, ++periodiccnt); 1650 ev_start (EV_A_ (W)w, ++periodiccnt);
1358 array_needsize (periodics, periodicmax, periodiccnt, (void)); 1651 array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1359 periodics [periodiccnt - 1] = w; 1652 periodics [periodiccnt - 1] = w;
1360 upheap ((WT *)periodics, periodiccnt - 1); 1653 upheap ((WT *)periodics, periodiccnt - 1);
1361 1654
1655 /*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
1656}
1657
1658void
1659ev_periodic_stop (EV_P_ ev_periodic *w)
1660{
1661 ev_clear_pending (EV_A_ (W)w);
1662 if (expect_false (!ev_is_active (w)))
1663 return;
1664
1362 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1665 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1363}
1364 1666
1365void 1667 {
1366ev_periodic_stop (EV_P_ struct ev_periodic *w) 1668 int active = ((W)w)->active;
1367{
1368 ev_clear_pending (EV_A_ (W)w);
1369 if (!ev_is_active (w))
1370 return;
1371 1669
1372 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1670 if (expect_true (--active < --periodiccnt))
1373
1374 if (((W)w)->active < periodiccnt--)
1375 { 1671 {
1376 periodics [((W)w)->active - 1] = periodics [periodiccnt]; 1672 periodics [active] = periodics [periodiccnt];
1377 downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1); 1673 adjustheap ((WT *)periodics, periodiccnt, active);
1378 } 1674 }
1675 }
1379 1676
1380 ev_stop (EV_A_ (W)w); 1677 ev_stop (EV_A_ (W)w);
1381} 1678}
1382 1679
1383void 1680void
1384ev_idle_start (EV_P_ struct ev_idle *w) 1681ev_periodic_again (EV_P_ ev_periodic *w)
1385{ 1682{
1386 if (ev_is_active (w)) 1683 /* TODO: use adjustheap and recalculation */
1387 return;
1388
1389 ev_start (EV_A_ (W)w, ++idlecnt);
1390 array_needsize (idles, idlemax, idlecnt, (void));
1391 idles [idlecnt - 1] = w;
1392}
1393
1394void
1395ev_idle_stop (EV_P_ struct ev_idle *w)
1396{
1397 ev_clear_pending (EV_A_ (W)w);
1398 if (ev_is_active (w))
1399 return;
1400
1401 idles [((W)w)->active - 1] = idles [--idlecnt];
1402 ev_stop (EV_A_ (W)w); 1684 ev_periodic_stop (EV_A_ w);
1685 ev_periodic_start (EV_A_ w);
1403} 1686}
1404 1687#endif
1405void
1406ev_prepare_start (EV_P_ struct ev_prepare *w)
1407{
1408 if (ev_is_active (w))
1409 return;
1410
1411 ev_start (EV_A_ (W)w, ++preparecnt);
1412 array_needsize (prepares, preparemax, preparecnt, (void));
1413 prepares [preparecnt - 1] = w;
1414}
1415
1416void
1417ev_prepare_stop (EV_P_ struct ev_prepare *w)
1418{
1419 ev_clear_pending (EV_A_ (W)w);
1420 if (ev_is_active (w))
1421 return;
1422
1423 prepares [((W)w)->active - 1] = prepares [--preparecnt];
1424 ev_stop (EV_A_ (W)w);
1425}
1426
1427void
1428ev_check_start (EV_P_ struct ev_check *w)
1429{
1430 if (ev_is_active (w))
1431 return;
1432
1433 ev_start (EV_A_ (W)w, ++checkcnt);
1434 array_needsize (checks, checkmax, checkcnt, (void));
1435 checks [checkcnt - 1] = w;
1436}
1437
1438void
1439ev_check_stop (EV_P_ struct ev_check *w)
1440{
1441 ev_clear_pending (EV_A_ (W)w);
1442 if (ev_is_active (w))
1443 return;
1444
1445 checks [((W)w)->active - 1] = checks [--checkcnt];
1446 ev_stop (EV_A_ (W)w);
1447}
1448 1688
1449#ifndef SA_RESTART 1689#ifndef SA_RESTART
1450# define SA_RESTART 0 1690# define SA_RESTART 0
1451#endif 1691#endif
1452 1692
1453void 1693void
1454ev_signal_start (EV_P_ struct ev_signal *w) 1694ev_signal_start (EV_P_ ev_signal *w)
1455{ 1695{
1456#if EV_MULTIPLICITY 1696#if EV_MULTIPLICITY
1457 assert (("signal watchers are only supported in the default loop", loop == default_loop)); 1697 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1458#endif 1698#endif
1459 if (ev_is_active (w)) 1699 if (expect_false (ev_is_active (w)))
1460 return; 1700 return;
1461 1701
1462 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 1702 assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1463 1703
1464 ev_start (EV_A_ (W)w, 1); 1704 ev_start (EV_A_ (W)w, 1);
1465 array_needsize (signals, signalmax, w->signum, signals_init); 1705 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1466 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); 1706 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1467 1707
1468 if (!((WL)w)->next) 1708 if (!((WL)w)->next)
1469 { 1709 {
1470#if WIN32 1710#if _WIN32
1471 signal (w->signum, sighandler); 1711 signal (w->signum, sighandler);
1472#else 1712#else
1473 struct sigaction sa; 1713 struct sigaction sa;
1474 sa.sa_handler = sighandler; 1714 sa.sa_handler = sighandler;
1475 sigfillset (&sa.sa_mask); 1715 sigfillset (&sa.sa_mask);
… …
1478#endif 1718#endif
1479 } 1719 }
1480} 1720}
1481 1721
1482void 1722void
1483ev_signal_stop (EV_P_ struct ev_signal *w) 1723ev_signal_stop (EV_P_ ev_signal *w)
1484{ 1724{
1485 ev_clear_pending (EV_A_ (W)w); 1725 ev_clear_pending (EV_A_ (W)w);
1486 if (!ev_is_active (w)) 1726 if (expect_false (!ev_is_active (w)))
1487 return; 1727 return;
1488 1728
1489 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); 1729 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1490 ev_stop (EV_A_ (W)w); 1730 ev_stop (EV_A_ (W)w);
1491 1731
1492 if (!signals [w->signum - 1].head) 1732 if (!signals [w->signum - 1].head)
1493 signal (w->signum, SIG_DFL); 1733 signal (w->signum, SIG_DFL);
1494} 1734}
1495 1735
1496void 1736void
1497ev_child_start (EV_P_ struct ev_child *w) 1737ev_child_start (EV_P_ ev_child *w)
1498{ 1738{
1499#if EV_MULTIPLICITY 1739#if EV_MULTIPLICITY
1500 assert (("child watchers are only supported in the default loop", loop == default_loop)); 1740 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1501#endif 1741#endif
1502 if (ev_is_active (w)) 1742 if (expect_false (ev_is_active (w)))
1503 return; 1743 return;
1504 1744
1505 ev_start (EV_A_ (W)w, 1); 1745 ev_start (EV_A_ (W)w, 1);
1506 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1746 wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1507} 1747}
1508 1748
1509void 1749void
1510ev_child_stop (EV_P_ struct ev_child *w) 1750ev_child_stop (EV_P_ ev_child *w)
1511{ 1751{
1512 ev_clear_pending (EV_A_ (W)w); 1752 ev_clear_pending (EV_A_ (W)w);
1513 if (ev_is_active (w)) 1753 if (expect_false (!ev_is_active (w)))
1514 return; 1754 return;
1515 1755
1516 wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1756 wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1517 ev_stop (EV_A_ (W)w); 1757 ev_stop (EV_A_ (W)w);
1518} 1758}
1519 1759
1760#if EV_STAT_ENABLE
1761
1762# ifdef _WIN32
1763# undef lstat
1764# define lstat(a,b) _stati64 (a,b)
1765# endif
1766
1767#define DEF_STAT_INTERVAL 5.0074891
1768#define MIN_STAT_INTERVAL 0.1074891
1769
1770static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
1771
1772#if EV_USE_INOTIFY
1773# define EV_INOTIFY_BUFSIZE 8192
1774
1775static void noinline
1776infy_add (EV_P_ ev_stat *w)
1777{
1778 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD);
1779
1780 if (w->wd < 0)
1781 {
1782 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
1783
1784 /* monitor some parent directory for speedup hints */
1785 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
1786 {
1787 char path [4096];
1788 strcpy (path, w->path);
1789
1790 do
1791 {
1792 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
1793 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
1794
1795 char *pend = strrchr (path, '/');
1796
1797 if (!pend)
1798 break; /* whoops, no '/', complain to your admin */
1799
1800 *pend = 0;
1801 w->wd = inotify_add_watch (fs_fd, path, mask);
1802 }
1803 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
1804 }
1805 }
1806 else
1807 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
1808
1809 if (w->wd >= 0)
1810 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
1811}
1812
1813static void noinline
1814infy_del (EV_P_ ev_stat *w)
1815{
1816 int slot;
1817 int wd = w->wd;
1818
1819 if (wd < 0)
1820 return;
1821
1822 w->wd = -2;
1823 slot = wd & (EV_INOTIFY_HASHSIZE - 1);
1824 wlist_del (&fs_hash [slot].head, (WL)w);
1825
1826 /* remove this watcher, if others are watching it, they will rearm */
1827 inotify_rm_watch (fs_fd, wd);
1828}
1829
1830static void noinline
1831infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
1832{
1833 if (slot < 0)
1834 /* overflow, need to check for all hahs slots */
1835 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
1836 infy_wd (EV_A_ slot, wd, ev);
1837 else
1838 {
1839 WL w_;
1840
1841 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
1842 {
1843 ev_stat *w = (ev_stat *)w_;
1844 w_ = w_->next; /* lets us remove this watcher and all before it */
1845
1846 if (w->wd == wd || wd == -1)
1847 {
1848 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
1849 {
1850 w->wd = -1;
1851 infy_add (EV_A_ w); /* re-add, no matter what */
1852 }
1853
1854 stat_timer_cb (EV_A_ &w->timer, 0);
1855 }
1856 }
1857 }
1858}
1859
1860static void
1861infy_cb (EV_P_ ev_io *w, int revents)
1862{
1863 char buf [EV_INOTIFY_BUFSIZE];
1864 struct inotify_event *ev = (struct inotify_event *)buf;
1865 int ofs;
1866 int len = read (fs_fd, buf, sizeof (buf));
1867
1868 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
1869 infy_wd (EV_A_ ev->wd, ev->wd, ev);
1870}
1871
1872void inline_size
1873infy_init (EV_P)
1874{
1875 if (fs_fd != -2)
1876 return;
1877
1878 fs_fd = inotify_init ();
1879
1880 if (fs_fd >= 0)
1881 {
1882 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
1883 ev_set_priority (&fs_w, EV_MAXPRI);
1884 ev_io_start (EV_A_ &fs_w);
1885 }
1886}
1887
1888void inline_size
1889infy_fork (EV_P)
1890{
1891 int slot;
1892
1893 if (fs_fd < 0)
1894 return;
1895
1896 close (fs_fd);
1897 fs_fd = inotify_init ();
1898
1899 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
1900 {
1901 WL w_ = fs_hash [slot].head;
1902 fs_hash [slot].head = 0;
1903
1904 while (w_)
1905 {
1906 ev_stat *w = (ev_stat *)w_;
1907 w_ = w_->next; /* lets us add this watcher */
1908
1909 w->wd = -1;
1910
1911 if (fs_fd >= 0)
1912 infy_add (EV_A_ w); /* re-add, no matter what */
1913 else
1914 ev_timer_start (EV_A_ &w->timer);
1915 }
1916
1917 }
1918}
1919
1920#endif
1921
1922void
1923ev_stat_stat (EV_P_ ev_stat *w)
1924{
1925 if (lstat (w->path, &w->attr) < 0)
1926 w->attr.st_nlink = 0;
1927 else if (!w->attr.st_nlink)
1928 w->attr.st_nlink = 1;
1929}
1930
1931static void noinline
1932stat_timer_cb (EV_P_ ev_timer *w_, int revents)
1933{
1934 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
1935
1936 /* we copy this here each the time so that */
1937 /* prev has the old value when the callback gets invoked */
1938 w->prev = w->attr;
1939 ev_stat_stat (EV_A_ w);
1940
1941 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
1942 if (
1943 w->prev.st_dev != w->attr.st_dev
1944 || w->prev.st_ino != w->attr.st_ino
1945 || w->prev.st_mode != w->attr.st_mode
1946 || w->prev.st_nlink != w->attr.st_nlink
1947 || w->prev.st_uid != w->attr.st_uid
1948 || w->prev.st_gid != w->attr.st_gid
1949 || w->prev.st_rdev != w->attr.st_rdev
1950 || w->prev.st_size != w->attr.st_size
1951 || w->prev.st_atime != w->attr.st_atime
1952 || w->prev.st_mtime != w->attr.st_mtime
1953 || w->prev.st_ctime != w->attr.st_ctime
1954 ) {
1955 #if EV_USE_INOTIFY
1956 infy_del (EV_A_ w);
1957 infy_add (EV_A_ w);
1958 ev_stat_stat (EV_A_ w); /* avoid race... */
1959 #endif
1960
1961 ev_feed_event (EV_A_ w, EV_STAT);
1962 }
1963}
1964
1965void
1966ev_stat_start (EV_P_ ev_stat *w)
1967{
1968 if (expect_false (ev_is_active (w)))
1969 return;
1970
1971 /* since we use memcmp, we need to clear any padding data etc. */
1972 memset (&w->prev, 0, sizeof (ev_statdata));
1973 memset (&w->attr, 0, sizeof (ev_statdata));
1974
1975 ev_stat_stat (EV_A_ w);
1976
1977 if (w->interval < MIN_STAT_INTERVAL)
1978 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
1979
1980 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
1981 ev_set_priority (&w->timer, ev_priority (w));
1982
1983#if EV_USE_INOTIFY
1984 infy_init (EV_A);
1985
1986 if (fs_fd >= 0)
1987 infy_add (EV_A_ w);
1988 else
1989#endif
1990 ev_timer_start (EV_A_ &w->timer);
1991
1992 ev_start (EV_A_ (W)w, 1);
1993}
1994
1995void
1996ev_stat_stop (EV_P_ ev_stat *w)
1997{
1998 ev_clear_pending (EV_A_ (W)w);
1999 if (expect_false (!ev_is_active (w)))
2000 return;
2001
2002#if EV_USE_INOTIFY
2003 infy_del (EV_A_ w);
2004#endif
2005 ev_timer_stop (EV_A_ &w->timer);
2006
2007 ev_stop (EV_A_ (W)w);
2008}
2009#endif
2010
2011void
2012ev_idle_start (EV_P_ ev_idle *w)
2013{
2014 if (expect_false (ev_is_active (w)))
2015 return;
2016
2017 ev_start (EV_A_ (W)w, ++idlecnt);
2018 array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2);
2019 idles [idlecnt - 1] = w;
2020}
2021
2022void
2023ev_idle_stop (EV_P_ ev_idle *w)
2024{
2025 ev_clear_pending (EV_A_ (W)w);
2026 if (expect_false (!ev_is_active (w)))
2027 return;
2028
2029 {
2030 int active = ((W)w)->active;
2031 idles [active - 1] = idles [--idlecnt];
2032 ((W)idles [active - 1])->active = active;
2033 }
2034
2035 ev_stop (EV_A_ (W)w);
2036}
2037
2038void
2039ev_prepare_start (EV_P_ ev_prepare *w)
2040{
2041 if (expect_false (ev_is_active (w)))
2042 return;
2043
2044 ev_start (EV_A_ (W)w, ++preparecnt);
2045 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2046 prepares [preparecnt - 1] = w;
2047}
2048
2049void
2050ev_prepare_stop (EV_P_ ev_prepare *w)
2051{
2052 ev_clear_pending (EV_A_ (W)w);
2053 if (expect_false (!ev_is_active (w)))
2054 return;
2055
2056 {
2057 int active = ((W)w)->active;
2058 prepares [active - 1] = prepares [--preparecnt];
2059 ((W)prepares [active - 1])->active = active;
2060 }
2061
2062 ev_stop (EV_A_ (W)w);
2063}
2064
2065void
2066ev_check_start (EV_P_ ev_check *w)
2067{
2068 if (expect_false (ev_is_active (w)))
2069 return;
2070
2071 ev_start (EV_A_ (W)w, ++checkcnt);
2072 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2073 checks [checkcnt - 1] = w;
2074}
2075
2076void
2077ev_check_stop (EV_P_ ev_check *w)
2078{
2079 ev_clear_pending (EV_A_ (W)w);
2080 if (expect_false (!ev_is_active (w)))
2081 return;
2082
2083 {
2084 int active = ((W)w)->active;
2085 checks [active - 1] = checks [--checkcnt];
2086 ((W)checks [active - 1])->active = active;
2087 }
2088
2089 ev_stop (EV_A_ (W)w);
2090}
2091
2092#if EV_EMBED_ENABLE
2093void noinline
2094ev_embed_sweep (EV_P_ ev_embed *w)
2095{
2096 ev_loop (w->loop, EVLOOP_NONBLOCK);
2097}
2098
2099static void
2100embed_cb (EV_P_ ev_io *io, int revents)
2101{
2102 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2103
2104 if (ev_cb (w))
2105 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2106 else
2107 ev_embed_sweep (loop, w);
2108}
2109
2110void
2111ev_embed_start (EV_P_ ev_embed *w)
2112{
2113 if (expect_false (ev_is_active (w)))
2114 return;
2115
2116 {
2117 struct ev_loop *loop = w->loop;
2118 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2119 ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
2120 }
2121
2122 ev_set_priority (&w->io, ev_priority (w));
2123 ev_io_start (EV_A_ &w->io);
2124
2125 ev_start (EV_A_ (W)w, 1);
2126}
2127
2128void
2129ev_embed_stop (EV_P_ ev_embed *w)
2130{
2131 ev_clear_pending (EV_A_ (W)w);
2132 if (expect_false (!ev_is_active (w)))
2133 return;
2134
2135 ev_io_stop (EV_A_ &w->io);
2136
2137 ev_stop (EV_A_ (W)w);
2138}
2139#endif
2140
2141#if EV_FORK_ENABLE
2142void
2143ev_fork_start (EV_P_ ev_fork *w)
2144{
2145 if (expect_false (ev_is_active (w)))
2146 return;
2147
2148 ev_start (EV_A_ (W)w, ++forkcnt);
2149 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2150 forks [forkcnt - 1] = w;
2151}
2152
2153void
2154ev_fork_stop (EV_P_ ev_fork *w)
2155{
2156 ev_clear_pending (EV_A_ (W)w);
2157 if (expect_false (!ev_is_active (w)))
2158 return;
2159
2160 {
2161 int active = ((W)w)->active;
2162 forks [active - 1] = forks [--forkcnt];
2163 ((W)forks [active - 1])->active = active;
2164 }
2165
2166 ev_stop (EV_A_ (W)w);
2167}
2168#endif
2169
1520/*****************************************************************************/ 2170/*****************************************************************************/
1521 2171
1522struct ev_once 2172struct ev_once
1523{ 2173{
1524 struct ev_io io; 2174 ev_io io;
1525 struct ev_timer to; 2175 ev_timer to;
1526 void (*cb)(int revents, void *arg); 2176 void (*cb)(int revents, void *arg);
1527 void *arg; 2177 void *arg;
1528}; 2178};
1529 2179
1530static void 2180static void
… …
1539 2189
1540 cb (revents, arg); 2190 cb (revents, arg);
1541} 2191}
1542 2192
1543static void 2193static void
1544once_cb_io (EV_P_ struct ev_io *w, int revents) 2194once_cb_io (EV_P_ ev_io *w, int revents)
1545{ 2195{
1546 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 2196 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1547} 2197}
1548 2198
1549static void 2199static void
1550once_cb_to (EV_P_ struct ev_timer *w, int revents) 2200once_cb_to (EV_P_ ev_timer *w, int revents)
1551{ 2201{
1552 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 2202 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1553} 2203}
1554 2204
1555void 2205void
1556ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 2206ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1557{ 2207{
1558 struct ev_once *once = ev_malloc (sizeof (struct ev_once)); 2208 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1559 2209
1560 if (!once) 2210 if (expect_false (!once))
2211 {
1561 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 2212 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1562 else 2213 return;
1563 { 2214 }
2215
1564 once->cb = cb; 2216 once->cb = cb;
1565 once->arg = arg; 2217 once->arg = arg;
1566 2218
1567 ev_watcher_init (&once->io, once_cb_io); 2219 ev_init (&once->io, once_cb_io);
1568 if (fd >= 0) 2220 if (fd >= 0)
1569 { 2221 {
1570 ev_io_set (&once->io, fd, events); 2222 ev_io_set (&once->io, fd, events);
1571 ev_io_start (EV_A_ &once->io); 2223 ev_io_start (EV_A_ &once->io);
1572 } 2224 }
1573 2225
1574 ev_watcher_init (&once->to, once_cb_to); 2226 ev_init (&once->to, once_cb_to);
1575 if (timeout >= 0.) 2227 if (timeout >= 0.)
1576 { 2228 {
1577 ev_timer_set (&once->to, timeout, 0.); 2229 ev_timer_set (&once->to, timeout, 0.);
1578 ev_timer_start (EV_A_ &once->to); 2230 ev_timer_start (EV_A_ &once->to);
1579 }
1580 } 2231 }
1581} 2232}
1582 2233
2234#ifdef __cplusplus
2235}
2236#endif
2237

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