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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 1.168 by root, Sat Dec 8 14:12:07 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)w)->priority - EV_MINPRI)
146 247
248#define EMPTY /* 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 if (fd >= 0 && fd < anfdmax)
513 fd_event (EV_A_ fd, revents);
514}
418 515
419static void 516void inline_size
420fd_reify (EV_P) 517fd_reify (EV_P)
421{ 518{
422 int i; 519 int i;
423 520
424 for (i = 0; i < fdchangecnt; ++i) 521 for (i = 0; i < fdchangecnt; ++i)
425 { 522 {
426 int fd = fdchanges [i]; 523 int fd = fdchanges [i];
427 ANFD *anfd = anfds + fd; 524 ANFD *anfd = anfds + fd;
428 struct ev_io *w; 525 ev_io *w;
429 526
430 int events = 0; 527 int events = 0;
431 528
432 for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) 529 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
433 events |= w->events; 530 events |= w->events;
434 531
532#if EV_SELECT_IS_WINSOCKET
533 if (events)
534 {
535 unsigned long argp;
536 anfd->handle = _get_osfhandle (fd);
537 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
538 }
539#endif
540
435 anfd->reify = 0; 541 anfd->reify = 0;
436 542
437 method_modify (EV_A_ fd, anfd->events, events); 543 backend_modify (EV_A_ fd, anfd->events, events);
438 anfd->events = events; 544 anfd->events = events;
439 } 545 }
440 546
441 fdchangecnt = 0; 547 fdchangecnt = 0;
442} 548}
443 549
444static void 550void inline_size
445fd_change (EV_P_ int fd) 551fd_change (EV_P_ int fd)
446{ 552{
447 if (anfds [fd].reify) 553 if (expect_false (anfds [fd].reify))
448 return; 554 return;
449 555
450 anfds [fd].reify = 1; 556 anfds [fd].reify = 1;
451 557
452 ++fdchangecnt; 558 ++fdchangecnt;
453 array_needsize (fdchanges, fdchangemax, fdchangecnt, (void)); 559 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
454 fdchanges [fdchangecnt - 1] = fd; 560 fdchanges [fdchangecnt - 1] = fd;
455} 561}
456 562
457static void 563void inline_speed
458fd_kill (EV_P_ int fd) 564fd_kill (EV_P_ int fd)
459{ 565{
460 struct ev_io *w; 566 ev_io *w;
461 567
462 while ((w = (struct ev_io *)anfds [fd].head)) 568 while ((w = (ev_io *)anfds [fd].head))
463 { 569 {
464 ev_io_stop (EV_A_ w); 570 ev_io_stop (EV_A_ w);
465 event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 571 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
466 } 572 }
467} 573}
468 574
469static int 575int inline_size
470fd_valid (int fd) 576fd_valid (int fd)
471{ 577{
472#ifdef WIN32 578#ifdef _WIN32
473 return !!win32_get_osfhandle (fd); 579 return _get_osfhandle (fd) != -1;
474#else 580#else
475 return fcntl (fd, F_GETFD) != -1; 581 return fcntl (fd, F_GETFD) != -1;
476#endif 582#endif
477} 583}
478 584
479/* called on EBADF to verify fds */ 585/* called on EBADF to verify fds */
480static void 586static void noinline
481fd_ebadf (EV_P) 587fd_ebadf (EV_P)
482{ 588{
483 int fd; 589 int fd;
484 590
485 for (fd = 0; fd < anfdmax; ++fd) 591 for (fd = 0; fd < anfdmax; ++fd)
… …
487 if (!fd_valid (fd) == -1 && errno == EBADF) 593 if (!fd_valid (fd) == -1 && errno == EBADF)
488 fd_kill (EV_A_ fd); 594 fd_kill (EV_A_ fd);
489} 595}
490 596
491/* called on ENOMEM in select/poll to kill some fds and retry */ 597/* called on ENOMEM in select/poll to kill some fds and retry */
492static void 598static void noinline
493fd_enomem (EV_P) 599fd_enomem (EV_P)
494{ 600{
495 int fd; 601 int fd;
496 602
497 for (fd = anfdmax; fd--; ) 603 for (fd = anfdmax; fd--; )
… …
500 fd_kill (EV_A_ fd); 606 fd_kill (EV_A_ fd);
501 return; 607 return;
502 } 608 }
503} 609}
504 610
505/* usually called after fork if method needs to re-arm all fds from scratch */ 611/* usually called after fork if backend needs to re-arm all fds from scratch */
506static void 612static void noinline
507fd_rearm_all (EV_P) 613fd_rearm_all (EV_P)
508{ 614{
509 int fd; 615 int fd;
510 616
511 /* this should be highly optimised to not do anything but set a flag */
512 for (fd = 0; fd < anfdmax; ++fd) 617 for (fd = 0; fd < anfdmax; ++fd)
513 if (anfds [fd].events) 618 if (anfds [fd].events)
514 { 619 {
515 anfds [fd].events = 0; 620 anfds [fd].events = 0;
516 fd_change (EV_A_ fd); 621 fd_change (EV_A_ fd);
517 } 622 }
518} 623}
519 624
520/*****************************************************************************/ 625/*****************************************************************************/
521 626
522static void 627void inline_speed
523upheap (WT *heap, int k) 628upheap (WT *heap, int k)
524{ 629{
525 WT w = heap [k]; 630 WT w = heap [k];
526 631
527 while (k && heap [k >> 1]->at > w->at) 632 while (k && heap [k >> 1]->at > w->at)
… …
534 heap [k] = w; 639 heap [k] = w;
535 ((W)heap [k])->active = k + 1; 640 ((W)heap [k])->active = k + 1;
536 641
537} 642}
538 643
539static void 644void inline_speed
540downheap (WT *heap, int N, int k) 645downheap (WT *heap, int N, int k)
541{ 646{
542 WT w = heap [k]; 647 WT w = heap [k];
543 648
544 while (k < (N >> 1)) 649 while (k < (N >> 1))
… …
558 663
559 heap [k] = w; 664 heap [k] = w;
560 ((W)heap [k])->active = k + 1; 665 ((W)heap [k])->active = k + 1;
561} 666}
562 667
668void inline_size
669adjustheap (WT *heap, int N, int k)
670{
671 upheap (heap, k);
672 downheap (heap, N, k);
673}
674
563/*****************************************************************************/ 675/*****************************************************************************/
564 676
565typedef struct 677typedef struct
566{ 678{
567 WL head; 679 WL head;
… …
571static ANSIG *signals; 683static ANSIG *signals;
572static int signalmax; 684static int signalmax;
573 685
574static int sigpipe [2]; 686static int sigpipe [2];
575static sig_atomic_t volatile gotsig; 687static sig_atomic_t volatile gotsig;
576static struct ev_io sigev; 688static ev_io sigev;
577 689
578static void 690void inline_size
579signals_init (ANSIG *base, int count) 691signals_init (ANSIG *base, int count)
580{ 692{
581 while (count--) 693 while (count--)
582 { 694 {
583 base->head = 0; 695 base->head = 0;
… …
588} 700}
589 701
590static void 702static void
591sighandler (int signum) 703sighandler (int signum)
592{ 704{
593#if WIN32 705#if _WIN32
594 signal (signum, sighandler); 706 signal (signum, sighandler);
595#endif 707#endif
596 708
597 signals [signum - 1].gotsig = 1; 709 signals [signum - 1].gotsig = 1;
598 710
… …
603 write (sigpipe [1], &signum, 1); 715 write (sigpipe [1], &signum, 1);
604 errno = old_errno; 716 errno = old_errno;
605 } 717 }
606} 718}
607 719
720void noinline
721ev_feed_signal_event (EV_P_ int signum)
722{
723 WL w;
724
725#if EV_MULTIPLICITY
726 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
727#endif
728
729 --signum;
730
731 if (signum < 0 || signum >= signalmax)
732 return;
733
734 signals [signum].gotsig = 0;
735
736 for (w = signals [signum].head; w; w = w->next)
737 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
738}
739
608static void 740static void
609sigcb (EV_P_ struct ev_io *iow, int revents) 741sigcb (EV_P_ ev_io *iow, int revents)
610{ 742{
611 WL w;
612 int signum; 743 int signum;
613 744
614 read (sigpipe [0], &revents, 1); 745 read (sigpipe [0], &revents, 1);
615 gotsig = 0; 746 gotsig = 0;
616 747
617 for (signum = signalmax; signum--; ) 748 for (signum = signalmax; signum--; )
618 if (signals [signum].gotsig) 749 if (signals [signum].gotsig)
619 { 750 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} 751}
626 752
627static void 753void inline_size
754fd_intern (int fd)
755{
756#ifdef _WIN32
757 int arg = 1;
758 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
759#else
760 fcntl (fd, F_SETFD, FD_CLOEXEC);
761 fcntl (fd, F_SETFL, O_NONBLOCK);
762#endif
763}
764
765static void noinline
628siginit (EV_P) 766siginit (EV_P)
629{ 767{
630#ifndef WIN32 768 fd_intern (sigpipe [0]);
631 fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC); 769 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
638 770
639 ev_io_set (&sigev, sigpipe [0], EV_READ); 771 ev_io_set (&sigev, sigpipe [0], EV_READ);
640 ev_io_start (EV_A_ &sigev); 772 ev_io_start (EV_A_ &sigev);
641 ev_unref (EV_A); /* child watcher should not keep loop alive */ 773 ev_unref (EV_A); /* child watcher should not keep loop alive */
642} 774}
643 775
644/*****************************************************************************/ 776/*****************************************************************************/
645 777
646static struct ev_child *childs [PID_HASHSIZE]; 778static ev_child *childs [EV_PID_HASHSIZE];
647 779
648#ifndef WIN32 780#ifndef _WIN32
649 781
650static struct ev_signal childev; 782static ev_signal childev;
783
784void inline_speed
785child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
786{
787 ev_child *w;
788
789 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
790 if (w->pid == pid || !w->pid)
791 {
792 ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */
793 w->rpid = pid;
794 w->rstatus = status;
795 ev_feed_event (EV_A_ (W)w, EV_CHILD);
796 }
797}
651 798
652#ifndef WCONTINUED 799#ifndef WCONTINUED
653# define WCONTINUED 0 800# define WCONTINUED 0
654#endif 801#endif
655 802
656static void 803static void
657child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
658{
659 struct ev_child *w;
660
661 for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
662 if (w->pid == pid || !w->pid)
663 {
664 ev_priority (w) = ev_priority (sw); /* need to do it *now* */
665 w->rpid = pid;
666 w->rstatus = status;
667 event (EV_A_ (W)w, EV_CHILD);
668 }
669}
670
671static void
672childcb (EV_P_ struct ev_signal *sw, int revents) 804childcb (EV_P_ ev_signal *sw, int revents)
673{ 805{
674 int pid, status; 806 int pid, status;
675 807
808 /* some systems define WCONTINUED but then fail to support it (linux 2.4) */
676 if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) 809 if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
677 { 810 if (!WCONTINUED
811 || errno != EINVAL
812 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
813 return;
814
678 /* make sure we are called again until all childs have been reaped */ 815 /* make sure we are called again until all childs have been reaped */
816 /* we need to do it this way so that the callback gets called before we continue */
679 event (EV_A_ (W)sw, EV_SIGNAL); 817 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
680 818
681 child_reap (EV_A_ sw, pid, pid, status); 819 child_reap (EV_A_ sw, pid, pid, status);
820 if (EV_PID_HASHSIZE > 1)
682 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */ 821 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
683 }
684} 822}
685 823
686#endif 824#endif
687 825
688/*****************************************************************************/ 826/*****************************************************************************/
689 827
828#if EV_USE_PORT
829# include "ev_port.c"
830#endif
690#if EV_USE_KQUEUE 831#if EV_USE_KQUEUE
691# include "ev_kqueue.c" 832# include "ev_kqueue.c"
692#endif 833#endif
693#if EV_USE_EPOLL 834#if EV_USE_EPOLL
694# include "ev_epoll.c" 835# include "ev_epoll.c"
… …
711{ 852{
712 return EV_VERSION_MINOR; 853 return EV_VERSION_MINOR;
713} 854}
714 855
715/* return true if we are running with elevated privileges and should ignore env variables */ 856/* return true if we are running with elevated privileges and should ignore env variables */
716static int 857int inline_size
717enable_secure (void) 858enable_secure (void)
718{ 859{
719#ifdef WIN32 860#ifdef _WIN32
720 return 0; 861 return 0;
721#else 862#else
722 return getuid () != geteuid () 863 return getuid () != geteuid ()
723 || getgid () != getegid (); 864 || getgid () != getegid ();
724#endif 865#endif
725} 866}
726 867
727int 868unsigned int
728ev_method (EV_P) 869ev_supported_backends (void)
729{ 870{
730 return method; 871 unsigned int flags = 0;
731}
732 872
733static void 873 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
734loop_init (EV_P_ int methods) 874 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
875 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
876 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
877 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
878
879 return flags;
880}
881
882unsigned int
883ev_recommended_backends (void)
735{ 884{
736 if (!method) 885 unsigned int flags = ev_supported_backends ();
886
887#ifndef __NetBSD__
888 /* kqueue is borked on everything but netbsd apparently */
889 /* it usually doesn't work correctly on anything but sockets and pipes */
890 flags &= ~EVBACKEND_KQUEUE;
891#endif
892#ifdef __APPLE__
893 // flags &= ~EVBACKEND_KQUEUE; for documentation
894 flags &= ~EVBACKEND_POLL;
895#endif
896
897 return flags;
898}
899
900unsigned int
901ev_embeddable_backends (void)
902{
903 return EVBACKEND_EPOLL
904 | EVBACKEND_KQUEUE
905 | EVBACKEND_PORT;
906}
907
908unsigned int
909ev_backend (EV_P)
910{
911 return backend;
912}
913
914unsigned int
915ev_loop_count (EV_P)
916{
917 return loop_count;
918}
919
920static void noinline
921loop_init (EV_P_ unsigned int flags)
922{
923 if (!backend)
737 { 924 {
738#if EV_USE_MONOTONIC 925#if EV_USE_MONOTONIC
739 { 926 {
740 struct timespec ts; 927 struct timespec ts;
741 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 928 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
742 have_monotonic = 1; 929 have_monotonic = 1;
743 } 930 }
744#endif 931#endif
745 932
746 rt_now = ev_time (); 933 ev_rt_now = ev_time ();
747 mn_now = get_clock (); 934 mn_now = get_clock ();
748 now_floor = mn_now; 935 now_floor = mn_now;
749 rtmn_diff = rt_now - mn_now; 936 rtmn_diff = ev_rt_now - mn_now;
750 937
751 if (methods == EVMETHOD_AUTO) 938 /* pid check not overridable via env */
752 if (!enable_secure () && getenv ("LIBEV_METHODS")) 939#ifndef _WIN32
940 if (flags & EVFLAG_FORKCHECK)
941 curpid = getpid ();
942#endif
943
944 if (!(flags & EVFLAG_NOENV)
945 && !enable_secure ()
946 && getenv ("LIBEV_FLAGS"))
753 methods = atoi (getenv ("LIBEV_METHODS")); 947 flags = atoi (getenv ("LIBEV_FLAGS"));
754 else
755 methods = EVMETHOD_ANY;
756 948
757 method = 0; 949 if (!(flags & 0x0000ffffUL))
950 flags |= ev_recommended_backends ();
951
952 backend = 0;
953 backend_fd = -1;
758#if EV_USE_WIN32 954#if EV_USE_INOTIFY
759 if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods); 955 fs_fd = -2;
956#endif
957
958#if EV_USE_PORT
959 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
760#endif 960#endif
761#if EV_USE_KQUEUE 961#if EV_USE_KQUEUE
762 if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods); 962 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
763#endif 963#endif
764#if EV_USE_EPOLL 964#if EV_USE_EPOLL
765 if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods); 965 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
766#endif 966#endif
767#if EV_USE_POLL 967#if EV_USE_POLL
768 if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods); 968 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
769#endif 969#endif
770#if EV_USE_SELECT 970#if EV_USE_SELECT
771 if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods); 971 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
772#endif 972#endif
773 973
774 ev_watcher_init (&sigev, sigcb); 974 ev_init (&sigev, sigcb);
775 ev_set_priority (&sigev, EV_MAXPRI); 975 ev_set_priority (&sigev, EV_MAXPRI);
776 } 976 }
777} 977}
778 978
779void 979static void noinline
780loop_destroy (EV_P) 980loop_destroy (EV_P)
781{ 981{
782 int i; 982 int i;
783 983
784#if EV_USE_WIN32 984#if EV_USE_INOTIFY
785 if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A); 985 if (fs_fd >= 0)
986 close (fs_fd);
987#endif
988
989 if (backend_fd >= 0)
990 close (backend_fd);
991
992#if EV_USE_PORT
993 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
786#endif 994#endif
787#if EV_USE_KQUEUE 995#if EV_USE_KQUEUE
788 if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A); 996 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
789#endif 997#endif
790#if EV_USE_EPOLL 998#if EV_USE_EPOLL
791 if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A); 999 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
792#endif 1000#endif
793#if EV_USE_POLL 1001#if EV_USE_POLL
794 if (method == EVMETHOD_POLL ) poll_destroy (EV_A); 1002 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
795#endif 1003#endif
796#if EV_USE_SELECT 1004#if EV_USE_SELECT
797 if (method == EVMETHOD_SELECT) select_destroy (EV_A); 1005 if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
798#endif 1006#endif
799 1007
800 for (i = NUMPRI; i--; ) 1008 for (i = NUMPRI; i--; )
1009 {
801 array_free (pending, [i]); 1010 array_free (pending, [i]);
1011#if EV_IDLE_ENABLE
1012 array_free (idle, [i]);
1013#endif
1014 }
802 1015
803 /* have to use the microsoft-never-gets-it-right macro */ 1016 /* have to use the microsoft-never-gets-it-right macro */
804 array_free_microshit (fdchange); 1017 array_free (fdchange, EMPTY);
805 array_free_microshit (timer); 1018 array_free (timer, EMPTY);
806 array_free_microshit (periodic); 1019#if EV_PERIODIC_ENABLE
807 array_free_microshit (idle); 1020 array_free (periodic, EMPTY);
808 array_free_microshit (prepare); 1021#endif
809 array_free_microshit (check); 1022 array_free (prepare, EMPTY);
1023 array_free (check, EMPTY);
810 1024
811 method = 0; 1025 backend = 0;
812} 1026}
813 1027
814static void 1028void inline_size infy_fork (EV_P);
1029
1030void inline_size
815loop_fork (EV_P) 1031loop_fork (EV_P)
816{ 1032{
1033#if EV_USE_PORT
1034 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1035#endif
1036#if EV_USE_KQUEUE
1037 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
1038#endif
817#if EV_USE_EPOLL 1039#if EV_USE_EPOLL
818 if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A); 1040 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
819#endif 1041#endif
820#if EV_USE_KQUEUE 1042#if EV_USE_INOTIFY
821 if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A); 1043 infy_fork (EV_A);
822#endif 1044#endif
823 1045
824 if (ev_is_active (&sigev)) 1046 if (ev_is_active (&sigev))
825 { 1047 {
826 /* default loop */ 1048 /* default loop */
… …
828 ev_ref (EV_A); 1050 ev_ref (EV_A);
829 ev_io_stop (EV_A_ &sigev); 1051 ev_io_stop (EV_A_ &sigev);
830 close (sigpipe [0]); 1052 close (sigpipe [0]);
831 close (sigpipe [1]); 1053 close (sigpipe [1]);
832 1054
833 while (ev_pipe (sigpipe)) 1055 while (pipe (sigpipe))
834 syserr ("(libev) error creating pipe"); 1056 syserr ("(libev) error creating pipe");
835 1057
836 siginit (EV_A); 1058 siginit (EV_A);
837 } 1059 }
838 1060
839 postfork = 0; 1061 postfork = 0;
840} 1062}
841 1063
842#if EV_MULTIPLICITY 1064#if EV_MULTIPLICITY
843struct ev_loop * 1065struct ev_loop *
844ev_loop_new (int methods) 1066ev_loop_new (unsigned int flags)
845{ 1067{
846 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 1068 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
847 1069
848 memset (loop, 0, sizeof (struct ev_loop)); 1070 memset (loop, 0, sizeof (struct ev_loop));
849 1071
850 loop_init (EV_A_ methods); 1072 loop_init (EV_A_ flags);
851 1073
852 if (ev_method (EV_A)) 1074 if (ev_backend (EV_A))
853 return loop; 1075 return loop;
854 1076
855 return 0; 1077 return 0;
856} 1078}
857 1079
… …
869} 1091}
870 1092
871#endif 1093#endif
872 1094
873#if EV_MULTIPLICITY 1095#if EV_MULTIPLICITY
874struct ev_loop default_loop_struct;
875static struct ev_loop *default_loop;
876
877struct ev_loop * 1096struct ev_loop *
1097ev_default_loop_init (unsigned int flags)
878#else 1098#else
879static int default_loop;
880
881int 1099int
1100ev_default_loop (unsigned int flags)
882#endif 1101#endif
883ev_default_loop (int methods)
884{ 1102{
885 if (sigpipe [0] == sigpipe [1]) 1103 if (sigpipe [0] == sigpipe [1])
886 if (ev_pipe (sigpipe)) 1104 if (pipe (sigpipe))
887 return 0; 1105 return 0;
888 1106
889 if (!default_loop) 1107 if (!ev_default_loop_ptr)
890 { 1108 {
891#if EV_MULTIPLICITY 1109#if EV_MULTIPLICITY
892 struct ev_loop *loop = default_loop = &default_loop_struct; 1110 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
893#else 1111#else
894 default_loop = 1; 1112 ev_default_loop_ptr = 1;
895#endif 1113#endif
896 1114
897 loop_init (EV_A_ methods); 1115 loop_init (EV_A_ flags);
898 1116
899 if (ev_method (EV_A)) 1117 if (ev_backend (EV_A))
900 { 1118 {
901 siginit (EV_A); 1119 siginit (EV_A);
902 1120
903#ifndef WIN32 1121#ifndef _WIN32
904 ev_signal_init (&childev, childcb, SIGCHLD); 1122 ev_signal_init (&childev, childcb, SIGCHLD);
905 ev_set_priority (&childev, EV_MAXPRI); 1123 ev_set_priority (&childev, EV_MAXPRI);
906 ev_signal_start (EV_A_ &childev); 1124 ev_signal_start (EV_A_ &childev);
907 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1125 ev_unref (EV_A); /* child watcher should not keep loop alive */
908#endif 1126#endif
909 } 1127 }
910 else 1128 else
911 default_loop = 0; 1129 ev_default_loop_ptr = 0;
912 } 1130 }
913 1131
914 return default_loop; 1132 return ev_default_loop_ptr;
915} 1133}
916 1134
917void 1135void
918ev_default_destroy (void) 1136ev_default_destroy (void)
919{ 1137{
920#if EV_MULTIPLICITY 1138#if EV_MULTIPLICITY
921 struct ev_loop *loop = default_loop; 1139 struct ev_loop *loop = ev_default_loop_ptr;
922#endif 1140#endif
923 1141
924#ifndef WIN32 1142#ifndef _WIN32
925 ev_ref (EV_A); /* child watcher */ 1143 ev_ref (EV_A); /* child watcher */
926 ev_signal_stop (EV_A_ &childev); 1144 ev_signal_stop (EV_A_ &childev);
927#endif 1145#endif
928 1146
929 ev_ref (EV_A); /* signal watcher */ 1147 ev_ref (EV_A); /* signal watcher */
… …
937 1155
938void 1156void
939ev_default_fork (void) 1157ev_default_fork (void)
940{ 1158{
941#if EV_MULTIPLICITY 1159#if EV_MULTIPLICITY
942 struct ev_loop *loop = default_loop; 1160 struct ev_loop *loop = ev_default_loop_ptr;
943#endif 1161#endif
944 1162
945 if (method) 1163 if (backend)
946 postfork = 1; 1164 postfork = 1;
947} 1165}
948 1166
949/*****************************************************************************/ 1167/*****************************************************************************/
950 1168
951static void 1169void
1170ev_invoke (EV_P_ void *w, int revents)
1171{
1172 EV_CB_INVOKE ((W)w, revents);
1173}
1174
1175void inline_speed
952call_pending (EV_P) 1176call_pending (EV_P)
953{ 1177{
954 int pri; 1178 int pri;
955 1179
956 for (pri = NUMPRI; pri--; ) 1180 for (pri = NUMPRI; pri--; )
957 while (pendingcnt [pri]) 1181 while (pendingcnt [pri])
958 { 1182 {
959 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 1183 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
960 1184
961 if (p->w) 1185 if (expect_true (p->w))
962 { 1186 {
1187 /*assert (("non-pending watcher on pending list", p->w->pending));*/
1188
963 p->w->pending = 0; 1189 p->w->pending = 0;
964 p->w->cb (EV_A_ p->w, p->events); 1190 EV_CB_INVOKE (p->w, p->events);
965 } 1191 }
966 } 1192 }
967} 1193}
968 1194
969static void 1195void inline_size
970timers_reify (EV_P) 1196timers_reify (EV_P)
971{ 1197{
972 while (timercnt && ((WT)timers [0])->at <= mn_now) 1198 while (timercnt && ((WT)timers [0])->at <= mn_now)
973 { 1199 {
974 struct ev_timer *w = timers [0]; 1200 ev_timer *w = timers [0];
975 1201
976 assert (("inactive timer on timer heap detected", ev_is_active (w))); 1202 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
977 1203
978 /* first reschedule or stop timer */ 1204 /* first reschedule or stop timer */
979 if (w->repeat) 1205 if (w->repeat)
980 { 1206 {
981 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 1207 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1208
982 ((WT)w)->at = mn_now + w->repeat; 1209 ((WT)w)->at += w->repeat;
1210 if (((WT)w)->at < mn_now)
1211 ((WT)w)->at = mn_now;
1212
983 downheap ((WT *)timers, timercnt, 0); 1213 downheap ((WT *)timers, timercnt, 0);
984 } 1214 }
985 else 1215 else
986 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ 1216 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
987 1217
988 event (EV_A_ (W)w, EV_TIMEOUT); 1218 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
989 } 1219 }
990} 1220}
991 1221
992static void 1222#if EV_PERIODIC_ENABLE
1223void inline_size
993periodics_reify (EV_P) 1224periodics_reify (EV_P)
994{ 1225{
995 while (periodiccnt && ((WT)periodics [0])->at <= rt_now) 1226 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
996 { 1227 {
997 struct ev_periodic *w = periodics [0]; 1228 ev_periodic *w = periodics [0];
998 1229
999 assert (("inactive timer on periodic heap detected", ev_is_active (w))); 1230 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1000 1231
1001 /* first reschedule or stop timer */ 1232 /* first reschedule or stop timer */
1002 if (w->interval) 1233 if (w->reschedule_cb)
1003 { 1234 {
1235 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
1236 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1237 downheap ((WT *)periodics, periodiccnt, 0);
1238 }
1239 else if (w->interval)
1240 {
1004 ((WT)w)->at += floor ((rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval; 1241 ((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)); 1242 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); 1243 downheap ((WT *)periodics, periodiccnt, 0);
1007 } 1244 }
1008 else 1245 else
1009 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 1246 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1010 1247
1011 event (EV_A_ (W)w, EV_PERIODIC); 1248 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1012 } 1249 }
1013} 1250}
1014 1251
1015static void 1252static void noinline
1016periodics_reschedule (EV_P) 1253periodics_reschedule (EV_P)
1017{ 1254{
1018 int i; 1255 int i;
1019 1256
1020 /* adjust periodics after time jump */ 1257 /* adjust periodics after time jump */
1021 for (i = 0; i < periodiccnt; ++i) 1258 for (i = 0; i < periodiccnt; ++i)
1022 { 1259 {
1023 struct ev_periodic *w = periodics [i]; 1260 ev_periodic *w = periodics [i];
1024 1261
1262 if (w->reschedule_cb)
1263 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1025 if (w->interval) 1264 else if (w->interval)
1265 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
1266 }
1267
1268 /* now rebuild the heap */
1269 for (i = periodiccnt >> 1; i--; )
1270 downheap ((WT *)periodics, periodiccnt, i);
1271}
1272#endif
1273
1274#if EV_IDLE_ENABLE
1275void inline_size
1276idle_reify (EV_P)
1277{
1278 if (expect_false (idleall))
1279 {
1280 int pri;
1281
1282 for (pri = NUMPRI; pri--; )
1026 { 1283 {
1027 ev_tstamp diff = ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval; 1284 if (pendingcnt [pri])
1285 break;
1028 1286
1029 if (fabs (diff) >= 1e-4) 1287 if (idlecnt [pri])
1030 { 1288 {
1031 ev_periodic_stop (EV_A_ w); 1289 queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
1032 ev_periodic_start (EV_A_ w); 1290 break;
1033
1034 i = 0; /* restart loop, inefficient, but time jumps should be rare */
1035 } 1291 }
1036 } 1292 }
1037 } 1293 }
1038} 1294}
1295#endif
1039 1296
1040inline int 1297int inline_size
1041time_update_monotonic (EV_P) 1298time_update_monotonic (EV_P)
1042{ 1299{
1043 mn_now = get_clock (); 1300 mn_now = get_clock ();
1044 1301
1045 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 1302 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1046 { 1303 {
1047 rt_now = rtmn_diff + mn_now; 1304 ev_rt_now = rtmn_diff + mn_now;
1048 return 0; 1305 return 0;
1049 } 1306 }
1050 else 1307 else
1051 { 1308 {
1052 now_floor = mn_now; 1309 now_floor = mn_now;
1053 rt_now = ev_time (); 1310 ev_rt_now = ev_time ();
1054 return 1; 1311 return 1;
1055 } 1312 }
1056} 1313}
1057 1314
1058static void 1315void inline_size
1059time_update (EV_P) 1316time_update (EV_P)
1060{ 1317{
1061 int i; 1318 int i;
1062 1319
1063#if EV_USE_MONOTONIC 1320#if EV_USE_MONOTONIC
… …
1065 { 1322 {
1066 if (time_update_monotonic (EV_A)) 1323 if (time_update_monotonic (EV_A))
1067 { 1324 {
1068 ev_tstamp odiff = rtmn_diff; 1325 ev_tstamp odiff = rtmn_diff;
1069 1326
1070 for (i = 4; --i; ) /* loop a few times, before making important decisions */ 1327 /* loop a few times, before making important decisions.
1328 * on the choice of "4": one iteration isn't enough,
1329 * in case we get preempted during the calls to
1330 * ev_time and get_clock. a second call is almost guaranteed
1331 * to succeed in that case, though. and looping a few more times
1332 * doesn't hurt either as we only do this on time-jumps or
1333 * in the unlikely event of having been preempted here.
1334 */
1335 for (i = 4; --i; )
1071 { 1336 {
1072 rtmn_diff = rt_now - mn_now; 1337 rtmn_diff = ev_rt_now - mn_now;
1073 1338
1074 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) 1339 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1075 return; /* all is well */ 1340 return; /* all is well */
1076 1341
1077 rt_now = ev_time (); 1342 ev_rt_now = ev_time ();
1078 mn_now = get_clock (); 1343 mn_now = get_clock ();
1079 now_floor = mn_now; 1344 now_floor = mn_now;
1080 } 1345 }
1081 1346
1347# if EV_PERIODIC_ENABLE
1082 periodics_reschedule (EV_A); 1348 periodics_reschedule (EV_A);
1349# endif
1083 /* no timer adjustment, as the monotonic clock doesn't jump */ 1350 /* no timer adjustment, as the monotonic clock doesn't jump */
1084 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */ 1351 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1085 } 1352 }
1086 } 1353 }
1087 else 1354 else
1088#endif 1355#endif
1089 { 1356 {
1090 rt_now = ev_time (); 1357 ev_rt_now = ev_time ();
1091 1358
1092 if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP)) 1359 if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
1093 { 1360 {
1361#if EV_PERIODIC_ENABLE
1094 periodics_reschedule (EV_A); 1362 periodics_reschedule (EV_A);
1363#endif
1095 1364
1096 /* adjust timers. this is easy, as the offset is the same for all */ 1365 /* adjust timers. this is easy, as the offset is the same for all of them */
1097 for (i = 0; i < timercnt; ++i) 1366 for (i = 0; i < timercnt; ++i)
1098 ((WT)timers [i])->at += rt_now - mn_now; 1367 ((WT)timers [i])->at += ev_rt_now - mn_now;
1099 } 1368 }
1100 1369
1101 mn_now = rt_now; 1370 mn_now = ev_rt_now;
1102 } 1371 }
1103} 1372}
1104 1373
1105void 1374void
1106ev_ref (EV_P) 1375ev_ref (EV_P)
… …
1117static int loop_done; 1386static int loop_done;
1118 1387
1119void 1388void
1120ev_loop (EV_P_ int flags) 1389ev_loop (EV_P_ int flags)
1121{ 1390{
1122 double block;
1123 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0; 1391 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
1392 ? EVUNLOOP_ONE
1393 : EVUNLOOP_CANCEL;
1394
1395 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
1124 1396
1125 do 1397 do
1126 { 1398 {
1399#ifndef _WIN32
1400 if (expect_false (curpid)) /* penalise the forking check even more */
1401 if (expect_false (getpid () != curpid))
1402 {
1403 curpid = getpid ();
1404 postfork = 1;
1405 }
1406#endif
1407
1408#if EV_FORK_ENABLE
1409 /* we might have forked, so queue fork handlers */
1410 if (expect_false (postfork))
1411 if (forkcnt)
1412 {
1413 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1414 call_pending (EV_A);
1415 }
1416#endif
1417
1127 /* queue check watchers (and execute them) */ 1418 /* queue check watchers (and execute them) */
1128 if (expect_false (preparecnt)) 1419 if (expect_false (preparecnt))
1129 { 1420 {
1130 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 1421 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1131 call_pending (EV_A); 1422 call_pending (EV_A);
1132 } 1423 }
1133 1424
1425 if (expect_false (!activecnt))
1426 break;
1427
1134 /* we might have forked, so reify kernel state if necessary */ 1428 /* we might have forked, so reify kernel state if necessary */
1135 if (expect_false (postfork)) 1429 if (expect_false (postfork))
1136 loop_fork (EV_A); 1430 loop_fork (EV_A);
1137 1431
1138 /* update fd-related kernel structures */ 1432 /* update fd-related kernel structures */
1139 fd_reify (EV_A); 1433 fd_reify (EV_A);
1140 1434
1141 /* calculate blocking time */ 1435 /* calculate blocking time */
1436 {
1437 ev_tstamp block;
1142 1438
1143 /* we only need this for !monotonic clockor timers, but as we basically 1439 if (expect_false (flags & EVLOOP_NONBLOCK || idleall || !activecnt))
1144 always have timers, we just calculate it always */ 1440 block = 0.; /* do not block at all */
1441 else
1442 {
1443 /* update time to cancel out callback processing overhead */
1145#if EV_USE_MONOTONIC 1444#if EV_USE_MONOTONIC
1146 if (expect_true (have_monotonic)) 1445 if (expect_true (have_monotonic))
1147 time_update_monotonic (EV_A); 1446 time_update_monotonic (EV_A);
1148 else 1447 else
1149#endif 1448#endif
1150 { 1449 {
1151 rt_now = ev_time (); 1450 ev_rt_now = ev_time ();
1152 mn_now = rt_now; 1451 mn_now = ev_rt_now;
1153 } 1452 }
1154 1453
1155 if (flags & EVLOOP_NONBLOCK || idlecnt)
1156 block = 0.;
1157 else
1158 {
1159 block = MAX_BLOCKTIME; 1454 block = MAX_BLOCKTIME;
1160 1455
1161 if (timercnt) 1456 if (timercnt)
1162 { 1457 {
1163 ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge; 1458 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1164 if (block > to) block = to; 1459 if (block > to) block = to;
1165 } 1460 }
1166 1461
1462#if EV_PERIODIC_ENABLE
1167 if (periodiccnt) 1463 if (periodiccnt)
1168 { 1464 {
1169 ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge; 1465 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1170 if (block > to) block = to; 1466 if (block > to) block = to;
1171 } 1467 }
1468#endif
1172 1469
1173 if (block < 0.) block = 0.; 1470 if (expect_false (block < 0.)) block = 0.;
1174 } 1471 }
1175 1472
1473 ++loop_count;
1176 method_poll (EV_A_ block); 1474 backend_poll (EV_A_ block);
1475 }
1177 1476
1178 /* update rt_now, do magic */ 1477 /* update ev_rt_now, do magic */
1179 time_update (EV_A); 1478 time_update (EV_A);
1180 1479
1181 /* queue pending timers and reschedule them */ 1480 /* queue pending timers and reschedule them */
1182 timers_reify (EV_A); /* relative timers called last */ 1481 timers_reify (EV_A); /* relative timers called last */
1482#if EV_PERIODIC_ENABLE
1183 periodics_reify (EV_A); /* absolute timers called first */ 1483 periodics_reify (EV_A); /* absolute timers called first */
1484#endif
1184 1485
1486#if EV_IDLE_ENABLE
1185 /* queue idle watchers unless io or timers are pending */ 1487 /* queue idle watchers unless other events are pending */
1186 if (!pendingcnt) 1488 idle_reify (EV_A);
1187 queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); 1489#endif
1188 1490
1189 /* queue check watchers, to be executed first */ 1491 /* queue check watchers, to be executed first */
1190 if (checkcnt) 1492 if (expect_false (checkcnt))
1191 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 1493 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1192 1494
1193 call_pending (EV_A); 1495 call_pending (EV_A);
1496
1194 } 1497 }
1195 while (activecnt && !loop_done); 1498 while (expect_true (activecnt && !loop_done));
1196 1499
1197 if (loop_done != 2) 1500 if (loop_done == EVUNLOOP_ONE)
1198 loop_done = 0; 1501 loop_done = EVUNLOOP_CANCEL;
1199} 1502}
1200 1503
1201void 1504void
1202ev_unloop (EV_P_ int how) 1505ev_unloop (EV_P_ int how)
1203{ 1506{
1204 loop_done = how; 1507 loop_done = how;
1205} 1508}
1206 1509
1207/*****************************************************************************/ 1510/*****************************************************************************/
1208 1511
1209inline void 1512void inline_size
1210wlist_add (WL *head, WL elem) 1513wlist_add (WL *head, WL elem)
1211{ 1514{
1212 elem->next = *head; 1515 elem->next = *head;
1213 *head = elem; 1516 *head = elem;
1214} 1517}
1215 1518
1216inline void 1519void inline_size
1217wlist_del (WL *head, WL elem) 1520wlist_del (WL *head, WL elem)
1218{ 1521{
1219 while (*head) 1522 while (*head)
1220 { 1523 {
1221 if (*head == elem) 1524 if (*head == elem)
… …
1226 1529
1227 head = &(*head)->next; 1530 head = &(*head)->next;
1228 } 1531 }
1229} 1532}
1230 1533
1231inline void 1534void inline_speed
1232ev_clear_pending (EV_P_ W w) 1535clear_pending (EV_P_ W w)
1233{ 1536{
1234 if (w->pending) 1537 if (w->pending)
1235 { 1538 {
1236 pendings [ABSPRI (w)][w->pending - 1].w = 0; 1539 pendings [ABSPRI (w)][w->pending - 1].w = 0;
1237 w->pending = 0; 1540 w->pending = 0;
1238 } 1541 }
1239} 1542}
1240 1543
1241inline void 1544int
1545ev_clear_pending (EV_P_ void *w)
1546{
1547 W w_ = (W)w;
1548 int pending = w_->pending;
1549
1550 if (!pending)
1551 return 0;
1552
1553 w_->pending = 0;
1554 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
1555 p->w = 0;
1556
1557 return p->events;
1558}
1559
1560void inline_size
1561pri_adjust (EV_P_ W w)
1562{
1563 int pri = w->priority;
1564 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1565 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1566 w->priority = pri;
1567}
1568
1569void inline_speed
1242ev_start (EV_P_ W w, int active) 1570ev_start (EV_P_ W w, int active)
1243{ 1571{
1244 if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; 1572 pri_adjust (EV_A_ w);
1245 if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1246
1247 w->active = active; 1573 w->active = active;
1248 ev_ref (EV_A); 1574 ev_ref (EV_A);
1249} 1575}
1250 1576
1251inline void 1577void inline_size
1252ev_stop (EV_P_ W w) 1578ev_stop (EV_P_ W w)
1253{ 1579{
1254 ev_unref (EV_A); 1580 ev_unref (EV_A);
1255 w->active = 0; 1581 w->active = 0;
1256} 1582}
1257 1583
1258/*****************************************************************************/ 1584/*****************************************************************************/
1259 1585
1260void 1586void
1261ev_io_start (EV_P_ struct ev_io *w) 1587ev_io_start (EV_P_ ev_io *w)
1262{ 1588{
1263 int fd = w->fd; 1589 int fd = w->fd;
1264 1590
1265 if (ev_is_active (w)) 1591 if (expect_false (ev_is_active (w)))
1266 return; 1592 return;
1267 1593
1268 assert (("ev_io_start called with negative fd", fd >= 0)); 1594 assert (("ev_io_start called with negative fd", fd >= 0));
1269 1595
1270 ev_start (EV_A_ (W)w, 1); 1596 ev_start (EV_A_ (W)w, 1);
1271 array_needsize (anfds, anfdmax, fd + 1, anfds_init); 1597 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1272 wlist_add ((WL *)&anfds[fd].head, (WL)w); 1598 wlist_add ((WL *)&anfds[fd].head, (WL)w);
1273 1599
1274 fd_change (EV_A_ fd); 1600 fd_change (EV_A_ fd);
1275} 1601}
1276 1602
1277void 1603void
1278ev_io_stop (EV_P_ struct ev_io *w) 1604ev_io_stop (EV_P_ ev_io *w)
1279{ 1605{
1280 ev_clear_pending (EV_A_ (W)w); 1606 clear_pending (EV_A_ (W)w);
1281 if (!ev_is_active (w)) 1607 if (expect_false (!ev_is_active (w)))
1282 return; 1608 return;
1609
1610 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1283 1611
1284 wlist_del ((WL *)&anfds[w->fd].head, (WL)w); 1612 wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
1285 ev_stop (EV_A_ (W)w); 1613 ev_stop (EV_A_ (W)w);
1286 1614
1287 fd_change (EV_A_ w->fd); 1615 fd_change (EV_A_ w->fd);
1288} 1616}
1289 1617
1290void 1618void
1291ev_timer_start (EV_P_ struct ev_timer *w) 1619ev_timer_start (EV_P_ ev_timer *w)
1292{ 1620{
1293 if (ev_is_active (w)) 1621 if (expect_false (ev_is_active (w)))
1294 return; 1622 return;
1295 1623
1296 ((WT)w)->at += mn_now; 1624 ((WT)w)->at += mn_now;
1297 1625
1298 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 1626 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1299 1627
1300 ev_start (EV_A_ (W)w, ++timercnt); 1628 ev_start (EV_A_ (W)w, ++timercnt);
1301 array_needsize (timers, timermax, timercnt, (void)); 1629 array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);
1302 timers [timercnt - 1] = w; 1630 timers [timercnt - 1] = w;
1303 upheap ((WT *)timers, timercnt - 1); 1631 upheap ((WT *)timers, timercnt - 1);
1304 1632
1633 /*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
1634}
1635
1636void
1637ev_timer_stop (EV_P_ ev_timer *w)
1638{
1639 clear_pending (EV_A_ (W)w);
1640 if (expect_false (!ev_is_active (w)))
1641 return;
1642
1305 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 1643 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1306}
1307 1644
1308void 1645 {
1309ev_timer_stop (EV_P_ struct ev_timer *w) 1646 int active = ((W)w)->active;
1310{
1311 ev_clear_pending (EV_A_ (W)w);
1312 if (!ev_is_active (w))
1313 return;
1314 1647
1315 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 1648 if (expect_true (--active < --timercnt))
1316
1317 if (((W)w)->active < timercnt--)
1318 { 1649 {
1319 timers [((W)w)->active - 1] = timers [timercnt]; 1650 timers [active] = timers [timercnt];
1320 downheap ((WT *)timers, timercnt, ((W)w)->active - 1); 1651 adjustheap ((WT *)timers, timercnt, active);
1321 } 1652 }
1653 }
1322 1654
1323 ((WT)w)->at = w->repeat; 1655 ((WT)w)->at -= mn_now;
1324 1656
1325 ev_stop (EV_A_ (W)w); 1657 ev_stop (EV_A_ (W)w);
1326} 1658}
1327 1659
1328void 1660void
1329ev_timer_again (EV_P_ struct ev_timer *w) 1661ev_timer_again (EV_P_ ev_timer *w)
1330{ 1662{
1331 if (ev_is_active (w)) 1663 if (ev_is_active (w))
1332 { 1664 {
1333 if (w->repeat) 1665 if (w->repeat)
1334 { 1666 {
1335 ((WT)w)->at = mn_now + w->repeat; 1667 ((WT)w)->at = mn_now + w->repeat;
1336 downheap ((WT *)timers, timercnt, ((W)w)->active - 1); 1668 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1337 } 1669 }
1338 else 1670 else
1339 ev_timer_stop (EV_A_ w); 1671 ev_timer_stop (EV_A_ w);
1340 } 1672 }
1341 else if (w->repeat) 1673 else if (w->repeat)
1674 {
1675 w->at = w->repeat;
1342 ev_timer_start (EV_A_ w); 1676 ev_timer_start (EV_A_ w);
1677 }
1343} 1678}
1344 1679
1680#if EV_PERIODIC_ENABLE
1345void 1681void
1346ev_periodic_start (EV_P_ struct ev_periodic *w) 1682ev_periodic_start (EV_P_ ev_periodic *w)
1347{ 1683{
1348 if (ev_is_active (w)) 1684 if (expect_false (ev_is_active (w)))
1349 return; 1685 return;
1350 1686
1687 if (w->reschedule_cb)
1688 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1689 else if (w->interval)
1690 {
1351 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 1691 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 */ 1692 /* 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; 1693 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
1694 }
1356 1695
1357 ev_start (EV_A_ (W)w, ++periodiccnt); 1696 ev_start (EV_A_ (W)w, ++periodiccnt);
1358 array_needsize (periodics, periodicmax, periodiccnt, (void)); 1697 array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1359 periodics [periodiccnt - 1] = w; 1698 periodics [periodiccnt - 1] = w;
1360 upheap ((WT *)periodics, periodiccnt - 1); 1699 upheap ((WT *)periodics, periodiccnt - 1);
1361 1700
1701 /*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
1702}
1703
1704void
1705ev_periodic_stop (EV_P_ ev_periodic *w)
1706{
1707 clear_pending (EV_A_ (W)w);
1708 if (expect_false (!ev_is_active (w)))
1709 return;
1710
1362 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1711 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1363}
1364 1712
1365void 1713 {
1366ev_periodic_stop (EV_P_ struct ev_periodic *w) 1714 int active = ((W)w)->active;
1367{
1368 ev_clear_pending (EV_A_ (W)w);
1369 if (!ev_is_active (w))
1370 return;
1371 1715
1372 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1716 if (expect_true (--active < --periodiccnt))
1373
1374 if (((W)w)->active < periodiccnt--)
1375 { 1717 {
1376 periodics [((W)w)->active - 1] = periodics [periodiccnt]; 1718 periodics [active] = periodics [periodiccnt];
1377 downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1); 1719 adjustheap ((WT *)periodics, periodiccnt, active);
1378 } 1720 }
1721 }
1379 1722
1380 ev_stop (EV_A_ (W)w); 1723 ev_stop (EV_A_ (W)w);
1381} 1724}
1382 1725
1383void 1726void
1384ev_idle_start (EV_P_ struct ev_idle *w) 1727ev_periodic_again (EV_P_ ev_periodic *w)
1385{ 1728{
1386 if (ev_is_active (w)) 1729 /* 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); 1730 ev_periodic_stop (EV_A_ w);
1731 ev_periodic_start (EV_A_ w);
1403} 1732}
1404 1733#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 1734
1449#ifndef SA_RESTART 1735#ifndef SA_RESTART
1450# define SA_RESTART 0 1736# define SA_RESTART 0
1451#endif 1737#endif
1452 1738
1453void 1739void
1454ev_signal_start (EV_P_ struct ev_signal *w) 1740ev_signal_start (EV_P_ ev_signal *w)
1455{ 1741{
1456#if EV_MULTIPLICITY 1742#if EV_MULTIPLICITY
1457 assert (("signal watchers are only supported in the default loop", loop == default_loop)); 1743 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1458#endif 1744#endif
1459 if (ev_is_active (w)) 1745 if (expect_false (ev_is_active (w)))
1460 return; 1746 return;
1461 1747
1462 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 1748 assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1463 1749
1464 ev_start (EV_A_ (W)w, 1); 1750 ev_start (EV_A_ (W)w, 1);
1465 array_needsize (signals, signalmax, w->signum, signals_init); 1751 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1466 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); 1752 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1467 1753
1468 if (!((WL)w)->next) 1754 if (!((WL)w)->next)
1469 { 1755 {
1470#if WIN32 1756#if _WIN32
1471 signal (w->signum, sighandler); 1757 signal (w->signum, sighandler);
1472#else 1758#else
1473 struct sigaction sa; 1759 struct sigaction sa;
1474 sa.sa_handler = sighandler; 1760 sa.sa_handler = sighandler;
1475 sigfillset (&sa.sa_mask); 1761 sigfillset (&sa.sa_mask);
… …
1478#endif 1764#endif
1479 } 1765 }
1480} 1766}
1481 1767
1482void 1768void
1483ev_signal_stop (EV_P_ struct ev_signal *w) 1769ev_signal_stop (EV_P_ ev_signal *w)
1484{ 1770{
1485 ev_clear_pending (EV_A_ (W)w); 1771 clear_pending (EV_A_ (W)w);
1486 if (!ev_is_active (w)) 1772 if (expect_false (!ev_is_active (w)))
1487 return; 1773 return;
1488 1774
1489 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); 1775 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1490 ev_stop (EV_A_ (W)w); 1776 ev_stop (EV_A_ (W)w);
1491 1777
1492 if (!signals [w->signum - 1].head) 1778 if (!signals [w->signum - 1].head)
1493 signal (w->signum, SIG_DFL); 1779 signal (w->signum, SIG_DFL);
1494} 1780}
1495 1781
1496void 1782void
1497ev_child_start (EV_P_ struct ev_child *w) 1783ev_child_start (EV_P_ ev_child *w)
1498{ 1784{
1499#if EV_MULTIPLICITY 1785#if EV_MULTIPLICITY
1500 assert (("child watchers are only supported in the default loop", loop == default_loop)); 1786 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1501#endif 1787#endif
1502 if (ev_is_active (w)) 1788 if (expect_false (ev_is_active (w)))
1503 return; 1789 return;
1504 1790
1505 ev_start (EV_A_ (W)w, 1); 1791 ev_start (EV_A_ (W)w, 1);
1506 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1792 wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1507} 1793}
1508 1794
1509void 1795void
1510ev_child_stop (EV_P_ struct ev_child *w) 1796ev_child_stop (EV_P_ ev_child *w)
1511{ 1797{
1512 ev_clear_pending (EV_A_ (W)w); 1798 clear_pending (EV_A_ (W)w);
1513 if (ev_is_active (w)) 1799 if (expect_false (!ev_is_active (w)))
1514 return; 1800 return;
1515 1801
1516 wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1802 wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1517 ev_stop (EV_A_ (W)w); 1803 ev_stop (EV_A_ (W)w);
1518} 1804}
1519 1805
1806#if EV_STAT_ENABLE
1807
1808# ifdef _WIN32
1809# undef lstat
1810# define lstat(a,b) _stati64 (a,b)
1811# endif
1812
1813#define DEF_STAT_INTERVAL 5.0074891
1814#define MIN_STAT_INTERVAL 0.1074891
1815
1816static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
1817
1818#if EV_USE_INOTIFY
1819# define EV_INOTIFY_BUFSIZE 8192
1820
1821static void noinline
1822infy_add (EV_P_ ev_stat *w)
1823{
1824 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);
1825
1826 if (w->wd < 0)
1827 {
1828 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
1829
1830 /* monitor some parent directory for speedup hints */
1831 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
1832 {
1833 char path [4096];
1834 strcpy (path, w->path);
1835
1836 do
1837 {
1838 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
1839 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
1840
1841 char *pend = strrchr (path, '/');
1842
1843 if (!pend)
1844 break; /* whoops, no '/', complain to your admin */
1845
1846 *pend = 0;
1847 w->wd = inotify_add_watch (fs_fd, path, mask);
1848 }
1849 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
1850 }
1851 }
1852 else
1853 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
1854
1855 if (w->wd >= 0)
1856 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
1857}
1858
1859static void noinline
1860infy_del (EV_P_ ev_stat *w)
1861{
1862 int slot;
1863 int wd = w->wd;
1864
1865 if (wd < 0)
1866 return;
1867
1868 w->wd = -2;
1869 slot = wd & (EV_INOTIFY_HASHSIZE - 1);
1870 wlist_del (&fs_hash [slot].head, (WL)w);
1871
1872 /* remove this watcher, if others are watching it, they will rearm */
1873 inotify_rm_watch (fs_fd, wd);
1874}
1875
1876static void noinline
1877infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
1878{
1879 if (slot < 0)
1880 /* overflow, need to check for all hahs slots */
1881 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
1882 infy_wd (EV_A_ slot, wd, ev);
1883 else
1884 {
1885 WL w_;
1886
1887 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
1888 {
1889 ev_stat *w = (ev_stat *)w_;
1890 w_ = w_->next; /* lets us remove this watcher and all before it */
1891
1892 if (w->wd == wd || wd == -1)
1893 {
1894 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
1895 {
1896 w->wd = -1;
1897 infy_add (EV_A_ w); /* re-add, no matter what */
1898 }
1899
1900 stat_timer_cb (EV_A_ &w->timer, 0);
1901 }
1902 }
1903 }
1904}
1905
1906static void
1907infy_cb (EV_P_ ev_io *w, int revents)
1908{
1909 char buf [EV_INOTIFY_BUFSIZE];
1910 struct inotify_event *ev = (struct inotify_event *)buf;
1911 int ofs;
1912 int len = read (fs_fd, buf, sizeof (buf));
1913
1914 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
1915 infy_wd (EV_A_ ev->wd, ev->wd, ev);
1916}
1917
1918void inline_size
1919infy_init (EV_P)
1920{
1921 if (fs_fd != -2)
1922 return;
1923
1924 fs_fd = inotify_init ();
1925
1926 if (fs_fd >= 0)
1927 {
1928 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
1929 ev_set_priority (&fs_w, EV_MAXPRI);
1930 ev_io_start (EV_A_ &fs_w);
1931 }
1932}
1933
1934void inline_size
1935infy_fork (EV_P)
1936{
1937 int slot;
1938
1939 if (fs_fd < 0)
1940 return;
1941
1942 close (fs_fd);
1943 fs_fd = inotify_init ();
1944
1945 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
1946 {
1947 WL w_ = fs_hash [slot].head;
1948 fs_hash [slot].head = 0;
1949
1950 while (w_)
1951 {
1952 ev_stat *w = (ev_stat *)w_;
1953 w_ = w_->next; /* lets us add this watcher */
1954
1955 w->wd = -1;
1956
1957 if (fs_fd >= 0)
1958 infy_add (EV_A_ w); /* re-add, no matter what */
1959 else
1960 ev_timer_start (EV_A_ &w->timer);
1961 }
1962
1963 }
1964}
1965
1966#endif
1967
1968void
1969ev_stat_stat (EV_P_ ev_stat *w)
1970{
1971 if (lstat (w->path, &w->attr) < 0)
1972 w->attr.st_nlink = 0;
1973 else if (!w->attr.st_nlink)
1974 w->attr.st_nlink = 1;
1975}
1976
1977static void noinline
1978stat_timer_cb (EV_P_ ev_timer *w_, int revents)
1979{
1980 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
1981
1982 /* we copy this here each the time so that */
1983 /* prev has the old value when the callback gets invoked */
1984 w->prev = w->attr;
1985 ev_stat_stat (EV_A_ w);
1986
1987 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
1988 if (
1989 w->prev.st_dev != w->attr.st_dev
1990 || w->prev.st_ino != w->attr.st_ino
1991 || w->prev.st_mode != w->attr.st_mode
1992 || w->prev.st_nlink != w->attr.st_nlink
1993 || w->prev.st_uid != w->attr.st_uid
1994 || w->prev.st_gid != w->attr.st_gid
1995 || w->prev.st_rdev != w->attr.st_rdev
1996 || w->prev.st_size != w->attr.st_size
1997 || w->prev.st_atime != w->attr.st_atime
1998 || w->prev.st_mtime != w->attr.st_mtime
1999 || w->prev.st_ctime != w->attr.st_ctime
2000 ) {
2001 #if EV_USE_INOTIFY
2002 infy_del (EV_A_ w);
2003 infy_add (EV_A_ w);
2004 ev_stat_stat (EV_A_ w); /* avoid race... */
2005 #endif
2006
2007 ev_feed_event (EV_A_ w, EV_STAT);
2008 }
2009}
2010
2011void
2012ev_stat_start (EV_P_ ev_stat *w)
2013{
2014 if (expect_false (ev_is_active (w)))
2015 return;
2016
2017 /* since we use memcmp, we need to clear any padding data etc. */
2018 memset (&w->prev, 0, sizeof (ev_statdata));
2019 memset (&w->attr, 0, sizeof (ev_statdata));
2020
2021 ev_stat_stat (EV_A_ w);
2022
2023 if (w->interval < MIN_STAT_INTERVAL)
2024 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2025
2026 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
2027 ev_set_priority (&w->timer, ev_priority (w));
2028
2029#if EV_USE_INOTIFY
2030 infy_init (EV_A);
2031
2032 if (fs_fd >= 0)
2033 infy_add (EV_A_ w);
2034 else
2035#endif
2036 ev_timer_start (EV_A_ &w->timer);
2037
2038 ev_start (EV_A_ (W)w, 1);
2039}
2040
2041void
2042ev_stat_stop (EV_P_ ev_stat *w)
2043{
2044 clear_pending (EV_A_ (W)w);
2045 if (expect_false (!ev_is_active (w)))
2046 return;
2047
2048#if EV_USE_INOTIFY
2049 infy_del (EV_A_ w);
2050#endif
2051 ev_timer_stop (EV_A_ &w->timer);
2052
2053 ev_stop (EV_A_ (W)w);
2054}
2055#endif
2056
2057#if EV_IDLE_ENABLE
2058void
2059ev_idle_start (EV_P_ ev_idle *w)
2060{
2061 if (expect_false (ev_is_active (w)))
2062 return;
2063
2064 pri_adjust (EV_A_ (W)w);
2065
2066 {
2067 int active = ++idlecnt [ABSPRI (w)];
2068
2069 ++idleall;
2070 ev_start (EV_A_ (W)w, active);
2071
2072 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2073 idles [ABSPRI (w)][active - 1] = w;
2074 }
2075}
2076
2077void
2078ev_idle_stop (EV_P_ ev_idle *w)
2079{
2080 clear_pending (EV_A_ (W)w);
2081 if (expect_false (!ev_is_active (w)))
2082 return;
2083
2084 {
2085 int active = ((W)w)->active;
2086
2087 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2088 ((W)idles [ABSPRI (w)][active - 1])->active = active;
2089
2090 ev_stop (EV_A_ (W)w);
2091 --idleall;
2092 }
2093}
2094#endif
2095
2096void
2097ev_prepare_start (EV_P_ ev_prepare *w)
2098{
2099 if (expect_false (ev_is_active (w)))
2100 return;
2101
2102 ev_start (EV_A_ (W)w, ++preparecnt);
2103 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2104 prepares [preparecnt - 1] = w;
2105}
2106
2107void
2108ev_prepare_stop (EV_P_ ev_prepare *w)
2109{
2110 clear_pending (EV_A_ (W)w);
2111 if (expect_false (!ev_is_active (w)))
2112 return;
2113
2114 {
2115 int active = ((W)w)->active;
2116 prepares [active - 1] = prepares [--preparecnt];
2117 ((W)prepares [active - 1])->active = active;
2118 }
2119
2120 ev_stop (EV_A_ (W)w);
2121}
2122
2123void
2124ev_check_start (EV_P_ ev_check *w)
2125{
2126 if (expect_false (ev_is_active (w)))
2127 return;
2128
2129 ev_start (EV_A_ (W)w, ++checkcnt);
2130 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2131 checks [checkcnt - 1] = w;
2132}
2133
2134void
2135ev_check_stop (EV_P_ ev_check *w)
2136{
2137 clear_pending (EV_A_ (W)w);
2138 if (expect_false (!ev_is_active (w)))
2139 return;
2140
2141 {
2142 int active = ((W)w)->active;
2143 checks [active - 1] = checks [--checkcnt];
2144 ((W)checks [active - 1])->active = active;
2145 }
2146
2147 ev_stop (EV_A_ (W)w);
2148}
2149
2150#if EV_EMBED_ENABLE
2151void noinline
2152ev_embed_sweep (EV_P_ ev_embed *w)
2153{
2154 ev_loop (w->loop, EVLOOP_NONBLOCK);
2155}
2156
2157static void
2158embed_cb (EV_P_ ev_io *io, int revents)
2159{
2160 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2161
2162 if (ev_cb (w))
2163 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2164 else
2165 ev_embed_sweep (loop, w);
2166}
2167
2168void
2169ev_embed_start (EV_P_ ev_embed *w)
2170{
2171 if (expect_false (ev_is_active (w)))
2172 return;
2173
2174 {
2175 struct ev_loop *loop = w->loop;
2176 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2177 ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
2178 }
2179
2180 ev_set_priority (&w->io, ev_priority (w));
2181 ev_io_start (EV_A_ &w->io);
2182
2183 ev_start (EV_A_ (W)w, 1);
2184}
2185
2186void
2187ev_embed_stop (EV_P_ ev_embed *w)
2188{
2189 clear_pending (EV_A_ (W)w);
2190 if (expect_false (!ev_is_active (w)))
2191 return;
2192
2193 ev_io_stop (EV_A_ &w->io);
2194
2195 ev_stop (EV_A_ (W)w);
2196}
2197#endif
2198
2199#if EV_FORK_ENABLE
2200void
2201ev_fork_start (EV_P_ ev_fork *w)
2202{
2203 if (expect_false (ev_is_active (w)))
2204 return;
2205
2206 ev_start (EV_A_ (W)w, ++forkcnt);
2207 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2208 forks [forkcnt - 1] = w;
2209}
2210
2211void
2212ev_fork_stop (EV_P_ ev_fork *w)
2213{
2214 clear_pending (EV_A_ (W)w);
2215 if (expect_false (!ev_is_active (w)))
2216 return;
2217
2218 {
2219 int active = ((W)w)->active;
2220 forks [active - 1] = forks [--forkcnt];
2221 ((W)forks [active - 1])->active = active;
2222 }
2223
2224 ev_stop (EV_A_ (W)w);
2225}
2226#endif
2227
1520/*****************************************************************************/ 2228/*****************************************************************************/
1521 2229
1522struct ev_once 2230struct ev_once
1523{ 2231{
1524 struct ev_io io; 2232 ev_io io;
1525 struct ev_timer to; 2233 ev_timer to;
1526 void (*cb)(int revents, void *arg); 2234 void (*cb)(int revents, void *arg);
1527 void *arg; 2235 void *arg;
1528}; 2236};
1529 2237
1530static void 2238static void
… …
1539 2247
1540 cb (revents, arg); 2248 cb (revents, arg);
1541} 2249}
1542 2250
1543static void 2251static void
1544once_cb_io (EV_P_ struct ev_io *w, int revents) 2252once_cb_io (EV_P_ ev_io *w, int revents)
1545{ 2253{
1546 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 2254 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1547} 2255}
1548 2256
1549static void 2257static void
1550once_cb_to (EV_P_ struct ev_timer *w, int revents) 2258once_cb_to (EV_P_ ev_timer *w, int revents)
1551{ 2259{
1552 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 2260 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1553} 2261}
1554 2262
1555void 2263void
1556ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 2264ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1557{ 2265{
1558 struct ev_once *once = ev_malloc (sizeof (struct ev_once)); 2266 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1559 2267
1560 if (!once) 2268 if (expect_false (!once))
2269 {
1561 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 2270 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1562 else 2271 return;
1563 { 2272 }
2273
1564 once->cb = cb; 2274 once->cb = cb;
1565 once->arg = arg; 2275 once->arg = arg;
1566 2276
1567 ev_watcher_init (&once->io, once_cb_io); 2277 ev_init (&once->io, once_cb_io);
1568 if (fd >= 0) 2278 if (fd >= 0)
1569 { 2279 {
1570 ev_io_set (&once->io, fd, events); 2280 ev_io_set (&once->io, fd, events);
1571 ev_io_start (EV_A_ &once->io); 2281 ev_io_start (EV_A_ &once->io);
1572 } 2282 }
1573 2283
1574 ev_watcher_init (&once->to, once_cb_to); 2284 ev_init (&once->to, once_cb_to);
1575 if (timeout >= 0.) 2285 if (timeout >= 0.)
1576 { 2286 {
1577 ev_timer_set (&once->to, timeout, 0.); 2287 ev_timer_set (&once->to, timeout, 0.);
1578 ev_timer_start (EV_A_ &once->to); 2288 ev_timer_start (EV_A_ &once->to);
1579 }
1580 } 2289 }
1581} 2290}
1582 2291
2292#ifdef __cplusplus
2293}
2294#endif
2295

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