ViewVC Help
View File | Revision Log | Show Annotations | Download File
/cvs/libev/ev.c
(Generate patch)

Comparing libev/ev.c (file contents):
Revision 1.68 by root, Mon Nov 5 20:19:00 2007 UTC vs.
Revision 1.140 by root, Mon Nov 26 19:49:36 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
53# endif 97# endif
54 98
55#endif 99#endif
56 100
57#include <math.h> 101#include <math.h>
58#include <stdlib.h> 102#include <stdlib.h>
59#include <unistd.h>
60#include <fcntl.h> 103#include <fcntl.h>
61#include <signal.h>
62#include <stddef.h> 104#include <stddef.h>
63 105
64#include <stdio.h> 106#include <stdio.h>
65 107
66#include <assert.h> 108#include <assert.h>
67#include <errno.h> 109#include <errno.h>
68#include <sys/types.h> 110#include <sys/types.h>
111#include <time.h>
112
113#include <signal.h>
114
69#ifndef WIN32 115#ifndef _WIN32
116# include <sys/time.h>
70# include <sys/wait.h> 117# include <sys/wait.h>
118# include <unistd.h>
119#else
120# define WIN32_LEAN_AND_MEAN
121# include <windows.h>
122# ifndef EV_SELECT_IS_WINSOCKET
123# define EV_SELECT_IS_WINSOCKET 1
71#endif 124# endif
72#include <sys/time.h> 125#endif
73#include <time.h>
74 126
75/**/ 127/**/
76 128
77#ifndef EV_USE_MONOTONIC 129#ifndef EV_USE_MONOTONIC
78# define EV_USE_MONOTONIC 1 130# define EV_USE_MONOTONIC 0
131#endif
132
133#ifndef EV_USE_REALTIME
134# define EV_USE_REALTIME 0
79#endif 135#endif
80 136
81#ifndef EV_USE_SELECT 137#ifndef EV_USE_SELECT
82# define EV_USE_SELECT 1 138# define EV_USE_SELECT 1
83#endif 139#endif
84 140
85#ifndef EV_USE_POLL 141#ifndef EV_USE_POLL
86# define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */ 142# ifdef _WIN32
143# define EV_USE_POLL 0
144# else
145# define EV_USE_POLL 1
146# endif
87#endif 147#endif
88 148
89#ifndef EV_USE_EPOLL 149#ifndef EV_USE_EPOLL
90# define EV_USE_EPOLL 0 150# define EV_USE_EPOLL 0
91#endif 151#endif
92 152
93#ifndef EV_USE_KQUEUE 153#ifndef EV_USE_KQUEUE
94# define EV_USE_KQUEUE 0 154# define EV_USE_KQUEUE 0
95#endif 155#endif
96 156
97#ifndef EV_USE_WIN32
98# ifdef WIN32
99# define EV_USE_WIN32 1
100# else
101# define EV_USE_WIN32 0
102# endif
103#endif
104
105#ifndef EV_USE_REALTIME 157#ifndef EV_USE_PORT
106# define EV_USE_REALTIME 1 158# define EV_USE_PORT 0
107#endif 159#endif
108 160
109/**/ 161/**/
110 162
111#ifndef CLOCK_MONOTONIC 163#ifndef CLOCK_MONOTONIC
… …
116#ifndef CLOCK_REALTIME 168#ifndef CLOCK_REALTIME
117# undef EV_USE_REALTIME 169# undef EV_USE_REALTIME
118# define EV_USE_REALTIME 0 170# define EV_USE_REALTIME 0
119#endif 171#endif
120 172
173#if EV_SELECT_IS_WINSOCKET
174# include <winsock.h>
175#endif
176
121/**/ 177/**/
122 178
123#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 179#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
124#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */ 180#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
125#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */ 181#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
126/*#define CLEANUP_INTERVAL 300. /* how often to try to free memory and re-check fds */ 182/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds */
127 183
184#ifdef EV_H
185# include EV_H
186#else
128#include "ev.h" 187# include "ev.h"
188#endif
129 189
130#if __GNUC__ >= 3 190#if __GNUC__ >= 3
131# define expect(expr,value) __builtin_expect ((expr),(value)) 191# define expect(expr,value) __builtin_expect ((expr),(value))
192# define inline_size static inline /* inline for codesize */
193# if EV_MINIMAL
132# define inline inline 194# define noinline __attribute__ ((noinline))
195# define inline_speed static noinline
196# else
197# define noinline
198# define inline_speed static inline
199# endif
133#else 200#else
134# define expect(expr,value) (expr) 201# define expect(expr,value) (expr)
135# define inline static 202# define inline_speed static
203# define inline_minimal static
204# define noinline
136#endif 205#endif
137 206
138#define expect_false(expr) expect ((expr) != 0, 0) 207#define expect_false(expr) expect ((expr) != 0, 0)
139#define expect_true(expr) expect ((expr) != 0, 1) 208#define expect_true(expr) expect ((expr) != 0, 1)
140 209
141#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 210#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
142#define ABSPRI(w) ((w)->priority - EV_MINPRI) 211#define ABSPRI(w) ((w)->priority - EV_MINPRI)
143 212
213#define EMPTY0 /* required for microsofts broken pseudo-c compiler */
214#define EMPTY2(a,b) /* used to suppress some warnings */
215
144typedef struct ev_watcher *W; 216typedef ev_watcher *W;
145typedef struct ev_watcher_list *WL; 217typedef ev_watcher_list *WL;
146typedef struct ev_watcher_time *WT; 218typedef ev_watcher_time *WT;
147 219
148static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 220static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
149 221
150#if WIN32 222#ifdef _WIN32
151/* note: the comment below could not be substantiated, but what would I care */ 223# include "ev_win32.c"
152/* MSDN says this is required to handle SIGFPE */
153volatile double SIGFPE_REQ = 0.0f;
154#endif 224#endif
225
226/*****************************************************************************/
227
228static void (*syserr_cb)(const char *msg);
229
230void ev_set_syserr_cb (void (*cb)(const char *msg))
231{
232 syserr_cb = cb;
233}
234
235static void
236syserr (const char *msg)
237{
238 if (!msg)
239 msg = "(libev) system error";
240
241 if (syserr_cb)
242 syserr_cb (msg);
243 else
244 {
245 perror (msg);
246 abort ();
247 }
248}
249
250static void *(*alloc)(void *ptr, long size);
251
252void ev_set_allocator (void *(*cb)(void *ptr, long size))
253{
254 alloc = cb;
255}
256
257static void *
258ev_realloc (void *ptr, long size)
259{
260 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
261
262 if (!ptr && size)
263 {
264 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
265 abort ();
266 }
267
268 return ptr;
269}
270
271#define ev_malloc(size) ev_realloc (0, (size))
272#define ev_free(ptr) ev_realloc ((ptr), 0)
155 273
156/*****************************************************************************/ 274/*****************************************************************************/
157 275
158typedef struct 276typedef struct
159{ 277{
160 WL head; 278 WL head;
161 unsigned char events; 279 unsigned char events;
162 unsigned char reify; 280 unsigned char reify;
281#if EV_SELECT_IS_WINSOCKET
282 SOCKET handle;
283#endif
163} ANFD; 284} ANFD;
164 285
165typedef struct 286typedef struct
166{ 287{
167 W w; 288 W w;
168 int events; 289 int events;
169} ANPENDING; 290} ANPENDING;
170 291
171#if EV_MULTIPLICITY 292#if EV_MULTIPLICITY
172 293
173struct ev_loop 294 struct ev_loop
174{ 295 {
296 ev_tstamp ev_rt_now;
297 #define ev_rt_now ((loop)->ev_rt_now)
175# define VAR(name,decl) decl; 298 #define VAR(name,decl) decl;
176# include "ev_vars.h" 299 #include "ev_vars.h"
177};
178# undef VAR 300 #undef VAR
301 };
179# include "ev_wrap.h" 302 #include "ev_wrap.h"
303
304 static struct ev_loop default_loop_struct;
305 struct ev_loop *ev_default_loop_ptr;
180 306
181#else 307#else
182 308
309 ev_tstamp ev_rt_now;
183# define VAR(name,decl) static decl; 310 #define VAR(name,decl) static decl;
184# include "ev_vars.h" 311 #include "ev_vars.h"
185# undef VAR 312 #undef VAR
313
314 static int ev_default_loop_ptr;
186 315
187#endif 316#endif
188 317
189/*****************************************************************************/ 318/*****************************************************************************/
190 319
191inline ev_tstamp 320ev_tstamp noinline
192ev_time (void) 321ev_time (void)
193{ 322{
194#if EV_USE_REALTIME 323#if EV_USE_REALTIME
195 struct timespec ts; 324 struct timespec ts;
196 clock_gettime (CLOCK_REALTIME, &ts); 325 clock_gettime (CLOCK_REALTIME, &ts);
… …
200 gettimeofday (&tv, 0); 329 gettimeofday (&tv, 0);
201 return tv.tv_sec + tv.tv_usec * 1e-6; 330 return tv.tv_sec + tv.tv_usec * 1e-6;
202#endif 331#endif
203} 332}
204 333
205inline ev_tstamp 334ev_tstamp inline_size
206get_clock (void) 335get_clock (void)
207{ 336{
208#if EV_USE_MONOTONIC 337#if EV_USE_MONOTONIC
209 if (expect_true (have_monotonic)) 338 if (expect_true (have_monotonic))
210 { 339 {
… …
215#endif 344#endif
216 345
217 return ev_time (); 346 return ev_time ();
218} 347}
219 348
349#if EV_MULTIPLICITY
220ev_tstamp 350ev_tstamp
221ev_now (EV_P) 351ev_now (EV_P)
222{ 352{
223 return rt_now; 353 return ev_rt_now;
224} 354}
355#endif
225 356
226#define array_roundsize(base,n) ((n) | 4 & ~3) 357#define array_roundsize(type,n) (((n) | 4) & ~3)
227 358
228#define array_needsize(base,cur,cnt,init) \ 359#define array_needsize(type,base,cur,cnt,init) \
229 if (expect_false ((cnt) > cur)) \ 360 if (expect_false ((cnt) > cur)) \
230 { \ 361 { \
231 int newcnt = cur; \ 362 int newcnt = cur; \
232 do \ 363 do \
233 { \ 364 { \
234 newcnt = array_roundsize (base, newcnt << 1); \ 365 newcnt = array_roundsize (type, newcnt << 1); \
235 } \ 366 } \
236 while ((cnt) > newcnt); \ 367 while ((cnt) > newcnt); \
237 \ 368 \
238 base = realloc (base, sizeof (*base) * (newcnt)); \ 369 base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\
239 init (base + cur, newcnt - cur); \ 370 init (base + cur, newcnt - cur); \
240 cur = newcnt; \ 371 cur = newcnt; \
241 } 372 }
242 373
243#define array_slim(stem) \ 374#define array_slim(type,stem) \
244 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 375 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
245 { \ 376 { \
246 stem ## max = array_roundsize (stem ## cnt >> 1); \ 377 stem ## max = array_roundsize (stem ## cnt >> 1); \
247 base = realloc (base, sizeof (*base) * (stem ## max)); \ 378 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
248 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 379 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
249 } 380 }
250 381
251#define array_free(stem, idx) \ 382#define array_free(stem, idx) \
252 free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 383 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
253 384
254/*****************************************************************************/ 385/*****************************************************************************/
255 386
256static void 387void inline_size
257anfds_init (ANFD *base, int count) 388anfds_init (ANFD *base, int count)
258{ 389{
259 while (count--) 390 while (count--)
260 { 391 {
261 base->head = 0; 392 base->head = 0;
… …
264 395
265 ++base; 396 ++base;
266 } 397 }
267} 398}
268 399
269static void 400void noinline
270event (EV_P_ W w, int events) 401ev_feed_event (EV_P_ void *w, int revents)
271{ 402{
272 if (w->pending) 403 W w_ = (W)w;
404
405 if (expect_false (w_->pending))
273 { 406 {
274 pendings [ABSPRI (w)][w->pending - 1].events |= events; 407 pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
275 return; 408 return;
276 } 409 }
277 410
278 w->pending = ++pendingcnt [ABSPRI (w)]; 411 w_->pending = ++pendingcnt [ABSPRI (w_)];
279 array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], ); 412 array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
280 pendings [ABSPRI (w)][w->pending - 1].w = w; 413 pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
281 pendings [ABSPRI (w)][w->pending - 1].events = events; 414 pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
282} 415}
283 416
284static void 417static void
285queue_events (EV_P_ W *events, int eventcnt, int type) 418queue_events (EV_P_ W *events, int eventcnt, int type)
286{ 419{
287 int i; 420 int i;
288 421
289 for (i = 0; i < eventcnt; ++i) 422 for (i = 0; i < eventcnt; ++i)
290 event (EV_A_ events [i], type); 423 ev_feed_event (EV_A_ events [i], type);
291} 424}
292 425
293static void 426void inline_speed
294fd_event (EV_P_ int fd, int events) 427fd_event (EV_P_ int fd, int revents)
295{ 428{
296 ANFD *anfd = anfds + fd; 429 ANFD *anfd = anfds + fd;
297 struct ev_io *w; 430 ev_io *w;
298 431
299 for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) 432 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
300 { 433 {
301 int ev = w->events & events; 434 int ev = w->events & revents;
302 435
303 if (ev) 436 if (ev)
304 event (EV_A_ (W)w, ev); 437 ev_feed_event (EV_A_ (W)w, ev);
305 } 438 }
439}
440
441void
442ev_feed_fd_event (EV_P_ int fd, int revents)
443{
444 fd_event (EV_A_ fd, revents);
306} 445}
307 446
308/*****************************************************************************/ 447/*****************************************************************************/
309 448
310static void 449void inline_size
311fd_reify (EV_P) 450fd_reify (EV_P)
312{ 451{
313 int i; 452 int i;
314 453
315 for (i = 0; i < fdchangecnt; ++i) 454 for (i = 0; i < fdchangecnt; ++i)
316 { 455 {
317 int fd = fdchanges [i]; 456 int fd = fdchanges [i];
318 ANFD *anfd = anfds + fd; 457 ANFD *anfd = anfds + fd;
319 struct ev_io *w; 458 ev_io *w;
320 459
321 int events = 0; 460 int events = 0;
322 461
323 for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) 462 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
324 events |= w->events; 463 events |= w->events;
325 464
465#if EV_SELECT_IS_WINSOCKET
466 if (events)
467 {
468 unsigned long argp;
469 anfd->handle = _get_osfhandle (fd);
470 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
471 }
472#endif
473
326 anfd->reify = 0; 474 anfd->reify = 0;
327 475
328 method_modify (EV_A_ fd, anfd->events, events); 476 backend_modify (EV_A_ fd, anfd->events, events);
329 anfd->events = events; 477 anfd->events = events;
330 } 478 }
331 479
332 fdchangecnt = 0; 480 fdchangecnt = 0;
333} 481}
334 482
335static void 483void inline_size
336fd_change (EV_P_ int fd) 484fd_change (EV_P_ int fd)
337{ 485{
338 if (anfds [fd].reify || fdchangecnt < 0) 486 if (expect_false (anfds [fd].reify))
339 return; 487 return;
340 488
341 anfds [fd].reify = 1; 489 anfds [fd].reify = 1;
342 490
343 ++fdchangecnt; 491 ++fdchangecnt;
344 array_needsize (fdchanges, fdchangemax, fdchangecnt, ); 492 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
345 fdchanges [fdchangecnt - 1] = fd; 493 fdchanges [fdchangecnt - 1] = fd;
346} 494}
347 495
348static void 496void inline_speed
349fd_kill (EV_P_ int fd) 497fd_kill (EV_P_ int fd)
350{ 498{
351 struct ev_io *w; 499 ev_io *w;
352 500
353 while ((w = (struct ev_io *)anfds [fd].head)) 501 while ((w = (ev_io *)anfds [fd].head))
354 { 502 {
355 ev_io_stop (EV_A_ w); 503 ev_io_stop (EV_A_ w);
356 event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 504 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
357 } 505 }
506}
507
508int inline_size
509fd_valid (int fd)
510{
511#ifdef _WIN32
512 return _get_osfhandle (fd) != -1;
513#else
514 return fcntl (fd, F_GETFD) != -1;
515#endif
358} 516}
359 517
360/* called on EBADF to verify fds */ 518/* called on EBADF to verify fds */
361static void 519static void noinline
362fd_ebadf (EV_P) 520fd_ebadf (EV_P)
363{ 521{
364 int fd; 522 int fd;
365 523
366 for (fd = 0; fd < anfdmax; ++fd) 524 for (fd = 0; fd < anfdmax; ++fd)
367 if (anfds [fd].events) 525 if (anfds [fd].events)
368 if (fcntl (fd, F_GETFD) == -1 && errno == EBADF) 526 if (!fd_valid (fd) == -1 && errno == EBADF)
369 fd_kill (EV_A_ fd); 527 fd_kill (EV_A_ fd);
370} 528}
371 529
372/* called on ENOMEM in select/poll to kill some fds and retry */ 530/* called on ENOMEM in select/poll to kill some fds and retry */
373static void 531static void noinline
374fd_enomem (EV_P) 532fd_enomem (EV_P)
375{ 533{
376 int fd; 534 int fd;
377 535
378 for (fd = anfdmax; fd--; ) 536 for (fd = anfdmax; fd--; )
… …
381 fd_kill (EV_A_ fd); 539 fd_kill (EV_A_ fd);
382 return; 540 return;
383 } 541 }
384} 542}
385 543
386/* susually called after fork if method needs to re-arm all fds from scratch */ 544/* usually called after fork if backend needs to re-arm all fds from scratch */
387static void 545static void noinline
388fd_rearm_all (EV_P) 546fd_rearm_all (EV_P)
389{ 547{
390 int fd; 548 int fd;
391 549
392 /* this should be highly optimised to not do anything but set a flag */ 550 /* this should be highly optimised to not do anything but set a flag */
… …
398 } 556 }
399} 557}
400 558
401/*****************************************************************************/ 559/*****************************************************************************/
402 560
403static void 561void inline_speed
404upheap (WT *heap, int k) 562upheap (WT *heap, int k)
405{ 563{
406 WT w = heap [k]; 564 WT w = heap [k];
407 565
408 while (k && heap [k >> 1]->at > w->at) 566 while (k && heap [k >> 1]->at > w->at)
… …
415 heap [k] = w; 573 heap [k] = w;
416 ((W)heap [k])->active = k + 1; 574 ((W)heap [k])->active = k + 1;
417 575
418} 576}
419 577
420static void 578void inline_speed
421downheap (WT *heap, int N, int k) 579downheap (WT *heap, int N, int k)
422{ 580{
423 WT w = heap [k]; 581 WT w = heap [k];
424 582
425 while (k < (N >> 1)) 583 while (k < (N >> 1))
… …
439 597
440 heap [k] = w; 598 heap [k] = w;
441 ((W)heap [k])->active = k + 1; 599 ((W)heap [k])->active = k + 1;
442} 600}
443 601
602void inline_size
603adjustheap (WT *heap, int N, int k)
604{
605 upheap (heap, k);
606 downheap (heap, N, k);
607}
608
444/*****************************************************************************/ 609/*****************************************************************************/
445 610
446typedef struct 611typedef struct
447{ 612{
448 WL head; 613 WL head;
… …
452static ANSIG *signals; 617static ANSIG *signals;
453static int signalmax; 618static int signalmax;
454 619
455static int sigpipe [2]; 620static int sigpipe [2];
456static sig_atomic_t volatile gotsig; 621static sig_atomic_t volatile gotsig;
457static struct ev_io sigev; 622static ev_io sigev;
458 623
459static void 624void inline_size
460signals_init (ANSIG *base, int count) 625signals_init (ANSIG *base, int count)
461{ 626{
462 while (count--) 627 while (count--)
463 { 628 {
464 base->head = 0; 629 base->head = 0;
… …
469} 634}
470 635
471static void 636static void
472sighandler (int signum) 637sighandler (int signum)
473{ 638{
474#if WIN32 639#if _WIN32
475 signal (signum, sighandler); 640 signal (signum, sighandler);
476#endif 641#endif
477 642
478 signals [signum - 1].gotsig = 1; 643 signals [signum - 1].gotsig = 1;
479 644
… …
484 write (sigpipe [1], &signum, 1); 649 write (sigpipe [1], &signum, 1);
485 errno = old_errno; 650 errno = old_errno;
486 } 651 }
487} 652}
488 653
654void noinline
655ev_feed_signal_event (EV_P_ int signum)
656{
657 WL w;
658
659#if EV_MULTIPLICITY
660 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
661#endif
662
663 --signum;
664
665 if (signum < 0 || signum >= signalmax)
666 return;
667
668 signals [signum].gotsig = 0;
669
670 for (w = signals [signum].head; w; w = w->next)
671 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
672}
673
489static void 674static void
490sigcb (EV_P_ struct ev_io *iow, int revents) 675sigcb (EV_P_ ev_io *iow, int revents)
491{ 676{
492 WL w;
493 int signum; 677 int signum;
494 678
495 read (sigpipe [0], &revents, 1); 679 read (sigpipe [0], &revents, 1);
496 gotsig = 0; 680 gotsig = 0;
497 681
498 for (signum = signalmax; signum--; ) 682 for (signum = signalmax; signum--; )
499 if (signals [signum].gotsig) 683 if (signals [signum].gotsig)
500 { 684 ev_feed_signal_event (EV_A_ signum + 1);
501 signals [signum].gotsig = 0;
502
503 for (w = signals [signum].head; w; w = w->next)
504 event (EV_A_ (W)w, EV_SIGNAL);
505 }
506} 685}
507 686
508static void 687void inline_size
688fd_intern (int fd)
689{
690#ifdef _WIN32
691 int arg = 1;
692 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
693#else
694 fcntl (fd, F_SETFD, FD_CLOEXEC);
695 fcntl (fd, F_SETFL, O_NONBLOCK);
696#endif
697}
698
699static void noinline
509siginit (EV_P) 700siginit (EV_P)
510{ 701{
511#ifndef WIN32 702 fd_intern (sigpipe [0]);
512 fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC); 703 fd_intern (sigpipe [1]);
513 fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
514
515 /* rather than sort out wether we really need nb, set it */
516 fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
517 fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
518#endif
519 704
520 ev_io_set (&sigev, sigpipe [0], EV_READ); 705 ev_io_set (&sigev, sigpipe [0], EV_READ);
521 ev_io_start (EV_A_ &sigev); 706 ev_io_start (EV_A_ &sigev);
522 ev_unref (EV_A); /* child watcher should not keep loop alive */ 707 ev_unref (EV_A); /* child watcher should not keep loop alive */
523} 708}
524 709
525/*****************************************************************************/ 710/*****************************************************************************/
526 711
712static ev_child *childs [PID_HASHSIZE];
713
527#ifndef WIN32 714#ifndef _WIN32
528 715
529static struct ev_child *childs [PID_HASHSIZE];
530static struct ev_signal childev; 716static ev_signal childev;
531 717
532#ifndef WCONTINUED 718#ifndef WCONTINUED
533# define WCONTINUED 0 719# define WCONTINUED 0
534#endif 720#endif
535 721
536static void 722void inline_speed
537child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status) 723child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
538{ 724{
539 struct ev_child *w; 725 ev_child *w;
540 726
541 for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next) 727 for (w = (ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
542 if (w->pid == pid || !w->pid) 728 if (w->pid == pid || !w->pid)
543 { 729 {
544 ev_priority (w) = ev_priority (sw); /* need to do it *now* */ 730 ev_priority (w) = ev_priority (sw); /* need to do it *now* */
545 w->rpid = pid; 731 w->rpid = pid;
546 w->rstatus = status; 732 w->rstatus = status;
547 event (EV_A_ (W)w, EV_CHILD); 733 ev_feed_event (EV_A_ (W)w, EV_CHILD);
548 } 734 }
549} 735}
550 736
551static void 737static void
552childcb (EV_P_ struct ev_signal *sw, int revents) 738childcb (EV_P_ ev_signal *sw, int revents)
553{ 739{
554 int pid, status; 740 int pid, status;
555 741
556 if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) 742 if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
557 { 743 {
558 /* make sure we are called again until all childs have been reaped */ 744 /* make sure we are called again until all childs have been reaped */
745 /* we need to do it this way so that the callback gets called before we continue */
559 event (EV_A_ (W)sw, EV_SIGNAL); 746 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
560 747
561 child_reap (EV_A_ sw, pid, pid, status); 748 child_reap (EV_A_ sw, pid, pid, status);
562 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */ 749 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
563 } 750 }
564} 751}
565 752
566#endif 753#endif
567 754
568/*****************************************************************************/ 755/*****************************************************************************/
569 756
757#if EV_USE_PORT
758# include "ev_port.c"
759#endif
570#if EV_USE_KQUEUE 760#if EV_USE_KQUEUE
571# include "ev_kqueue.c" 761# include "ev_kqueue.c"
572#endif 762#endif
573#if EV_USE_EPOLL 763#if EV_USE_EPOLL
574# include "ev_epoll.c" 764# include "ev_epoll.c"
… …
591{ 781{
592 return EV_VERSION_MINOR; 782 return EV_VERSION_MINOR;
593} 783}
594 784
595/* return true if we are running with elevated privileges and should ignore env variables */ 785/* return true if we are running with elevated privileges and should ignore env variables */
596static int 786int inline_size
597enable_secure (void) 787enable_secure (void)
598{ 788{
599#ifdef WIN32 789#ifdef _WIN32
600 return 0; 790 return 0;
601#else 791#else
602 return getuid () != geteuid () 792 return getuid () != geteuid ()
603 || getgid () != getegid (); 793 || getgid () != getegid ();
604#endif 794#endif
605} 795}
606 796
607int 797unsigned int
608ev_method (EV_P) 798ev_supported_backends (void)
609{ 799{
610 return method; 800 unsigned int flags = 0;
801
802 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
803 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
804 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
805 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
806 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
807
808 return flags;
809}
810
811unsigned int
812ev_recommended_backends (void)
813{
814 unsigned int flags = ev_supported_backends ();
815
816#ifndef __NetBSD__
817 /* kqueue is borked on everything but netbsd apparently */
818 /* it usually doesn't work correctly on anything but sockets and pipes */
819 flags &= ~EVBACKEND_KQUEUE;
820#endif
821#ifdef __APPLE__
822 // flags &= ~EVBACKEND_KQUEUE; for documentation
823 flags &= ~EVBACKEND_POLL;
824#endif
825
826 return flags;
827}
828
829unsigned int
830ev_embeddable_backends (void)
831{
832 return EVBACKEND_EPOLL
833 | EVBACKEND_KQUEUE
834 | EVBACKEND_PORT;
835}
836
837unsigned int
838ev_backend (EV_P)
839{
840 return backend;
611} 841}
612 842
613static void 843static void
614loop_init (EV_P_ int methods) 844loop_init (EV_P_ unsigned int flags)
615{ 845{
616 if (!method) 846 if (!backend)
617 { 847 {
618#if EV_USE_MONOTONIC 848#if EV_USE_MONOTONIC
619 { 849 {
620 struct timespec ts; 850 struct timespec ts;
621 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 851 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
622 have_monotonic = 1; 852 have_monotonic = 1;
623 } 853 }
624#endif 854#endif
625 855
626 rt_now = ev_time (); 856 ev_rt_now = ev_time ();
627 mn_now = get_clock (); 857 mn_now = get_clock ();
628 now_floor = mn_now; 858 now_floor = mn_now;
629 rtmn_diff = rt_now - mn_now; 859 rtmn_diff = ev_rt_now - mn_now;
630 860
631 if (methods == EVMETHOD_AUTO) 861 if (!(flags & EVFLAG_NOENV)
632 if (!enable_secure () && getenv ("LIBEV_METHODS")) 862 && !enable_secure ()
863 && getenv ("LIBEV_FLAGS"))
633 methods = atoi (getenv ("LIBEV_METHODS")); 864 flags = atoi (getenv ("LIBEV_FLAGS"));
634 else
635 methods = EVMETHOD_ANY;
636 865
637 method = 0; 866 if (!(flags & 0x0000ffffUL))
638#if EV_USE_WIN32 867 flags |= ev_recommended_backends ();
639 if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods); 868
869 backend = 0;
870#if EV_USE_PORT
871 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
640#endif 872#endif
641#if EV_USE_KQUEUE 873#if EV_USE_KQUEUE
642 if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods); 874 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
643#endif 875#endif
644#if EV_USE_EPOLL 876#if EV_USE_EPOLL
645 if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods); 877 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
646#endif 878#endif
647#if EV_USE_POLL 879#if EV_USE_POLL
648 if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods); 880 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
649#endif 881#endif
650#if EV_USE_SELECT 882#if EV_USE_SELECT
651 if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods); 883 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
652#endif 884#endif
653 }
654}
655 885
656void 886 ev_init (&sigev, sigcb);
887 ev_set_priority (&sigev, EV_MAXPRI);
888 }
889}
890
891static void
657loop_destroy (EV_P) 892loop_destroy (EV_P)
658{ 893{
659 int i; 894 int i;
660 895
661#if EV_USE_WIN32 896#if EV_USE_PORT
662 if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A); 897 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
663#endif 898#endif
664#if EV_USE_KQUEUE 899#if EV_USE_KQUEUE
665 if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A); 900 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
666#endif 901#endif
667#if EV_USE_EPOLL 902#if EV_USE_EPOLL
668 if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A); 903 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
669#endif 904#endif
670#if EV_USE_POLL 905#if EV_USE_POLL
671 if (method == EVMETHOD_POLL ) poll_destroy (EV_A); 906 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
672#endif 907#endif
673#if EV_USE_SELECT 908#if EV_USE_SELECT
674 if (method == EVMETHOD_SELECT) select_destroy (EV_A); 909 if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
675#endif 910#endif
676 911
677 for (i = NUMPRI; i--; ) 912 for (i = NUMPRI; i--; )
678 array_free (pending, [i]); 913 array_free (pending, [i]);
679 914
915 /* have to use the microsoft-never-gets-it-right macro */
680 array_free (fdchange, ); 916 array_free (fdchange, EMPTY0);
681 array_free (timer, ); 917 array_free (timer, EMPTY0);
918#if EV_PERIODIC_ENABLE
682 array_free (periodic, ); 919 array_free (periodic, EMPTY0);
920#endif
683 array_free (idle, ); 921 array_free (idle, EMPTY0);
684 array_free (prepare, ); 922 array_free (prepare, EMPTY0);
685 array_free (check, ); 923 array_free (check, EMPTY0);
686 924
687 method = 0; 925 backend = 0;
688 /*TODO*/
689} 926}
690 927
691void 928static void
692loop_fork (EV_P) 929loop_fork (EV_P)
693{ 930{
694 /*TODO*/ 931#if EV_USE_PORT
932 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
933#endif
934#if EV_USE_KQUEUE
935 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
936#endif
695#if EV_USE_EPOLL 937#if EV_USE_EPOLL
696 if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A); 938 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
697#endif 939#endif
698#if EV_USE_KQUEUE 940
699 if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A); 941 if (ev_is_active (&sigev))
700#endif 942 {
943 /* default loop */
944
945 ev_ref (EV_A);
946 ev_io_stop (EV_A_ &sigev);
947 close (sigpipe [0]);
948 close (sigpipe [1]);
949
950 while (pipe (sigpipe))
951 syserr ("(libev) error creating pipe");
952
953 siginit (EV_A);
954 }
955
956 postfork = 0;
701} 957}
702 958
703#if EV_MULTIPLICITY 959#if EV_MULTIPLICITY
704struct ev_loop * 960struct ev_loop *
705ev_loop_new (int methods) 961ev_loop_new (unsigned int flags)
706{ 962{
707 struct ev_loop *loop = (struct ev_loop *)calloc (1, sizeof (struct ev_loop)); 963 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
708 964
965 memset (loop, 0, sizeof (struct ev_loop));
966
709 loop_init (EV_A_ methods); 967 loop_init (EV_A_ flags);
710 968
711 if (ev_method (EV_A)) 969 if (ev_backend (EV_A))
712 return loop; 970 return loop;
713 971
714 return 0; 972 return 0;
715} 973}
716 974
717void 975void
718ev_loop_destroy (EV_P) 976ev_loop_destroy (EV_P)
719{ 977{
720 loop_destroy (EV_A); 978 loop_destroy (EV_A);
721 free (loop); 979 ev_free (loop);
722} 980}
723 981
724void 982void
725ev_loop_fork (EV_P) 983ev_loop_fork (EV_P)
726{ 984{
727 loop_fork (EV_A); 985 postfork = 1;
728} 986}
729 987
730#endif 988#endif
731 989
732#if EV_MULTIPLICITY 990#if EV_MULTIPLICITY
733struct ev_loop default_loop_struct;
734static struct ev_loop *default_loop;
735
736struct ev_loop * 991struct ev_loop *
992ev_default_loop_init (unsigned int flags)
737#else 993#else
738static int default_loop;
739
740int 994int
995ev_default_loop (unsigned int flags)
741#endif 996#endif
742ev_default_loop (int methods)
743{ 997{
744 if (sigpipe [0] == sigpipe [1]) 998 if (sigpipe [0] == sigpipe [1])
745 if (pipe (sigpipe)) 999 if (pipe (sigpipe))
746 return 0; 1000 return 0;
747 1001
748 if (!default_loop) 1002 if (!ev_default_loop_ptr)
749 { 1003 {
750#if EV_MULTIPLICITY 1004#if EV_MULTIPLICITY
751 struct ev_loop *loop = default_loop = &default_loop_struct; 1005 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
752#else 1006#else
753 default_loop = 1; 1007 ev_default_loop_ptr = 1;
754#endif 1008#endif
755 1009
756 loop_init (EV_A_ methods); 1010 loop_init (EV_A_ flags);
757 1011
758 if (ev_method (EV_A)) 1012 if (ev_backend (EV_A))
759 { 1013 {
760 ev_watcher_init (&sigev, sigcb);
761 ev_set_priority (&sigev, EV_MAXPRI);
762 siginit (EV_A); 1014 siginit (EV_A);
763 1015
764#ifndef WIN32 1016#ifndef _WIN32
765 ev_signal_init (&childev, childcb, SIGCHLD); 1017 ev_signal_init (&childev, childcb, SIGCHLD);
766 ev_set_priority (&childev, EV_MAXPRI); 1018 ev_set_priority (&childev, EV_MAXPRI);
767 ev_signal_start (EV_A_ &childev); 1019 ev_signal_start (EV_A_ &childev);
768 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1020 ev_unref (EV_A); /* child watcher should not keep loop alive */
769#endif 1021#endif
770 } 1022 }
771 else 1023 else
772 default_loop = 0; 1024 ev_default_loop_ptr = 0;
773 } 1025 }
774 1026
775 return default_loop; 1027 return ev_default_loop_ptr;
776} 1028}
777 1029
778void 1030void
779ev_default_destroy (void) 1031ev_default_destroy (void)
780{ 1032{
781#if EV_MULTIPLICITY 1033#if EV_MULTIPLICITY
782 struct ev_loop *loop = default_loop; 1034 struct ev_loop *loop = ev_default_loop_ptr;
783#endif 1035#endif
784 1036
1037#ifndef _WIN32
785 ev_ref (EV_A); /* child watcher */ 1038 ev_ref (EV_A); /* child watcher */
786 ev_signal_stop (EV_A_ &childev); 1039 ev_signal_stop (EV_A_ &childev);
1040#endif
787 1041
788 ev_ref (EV_A); /* signal watcher */ 1042 ev_ref (EV_A); /* signal watcher */
789 ev_io_stop (EV_A_ &sigev); 1043 ev_io_stop (EV_A_ &sigev);
790 1044
791 close (sigpipe [0]); sigpipe [0] = 0; 1045 close (sigpipe [0]); sigpipe [0] = 0;
… …
796 1050
797void 1051void
798ev_default_fork (void) 1052ev_default_fork (void)
799{ 1053{
800#if EV_MULTIPLICITY 1054#if EV_MULTIPLICITY
801 struct ev_loop *loop = default_loop; 1055 struct ev_loop *loop = ev_default_loop_ptr;
802#endif 1056#endif
803 1057
804 loop_fork (EV_A); 1058 if (backend)
805 1059 postfork = 1;
806 ev_io_stop (EV_A_ &sigev);
807 close (sigpipe [0]);
808 close (sigpipe [1]);
809 pipe (sigpipe);
810
811 ev_ref (EV_A); /* signal watcher */
812 siginit (EV_A);
813} 1060}
814 1061
815/*****************************************************************************/ 1062/*****************************************************************************/
816 1063
817static void 1064int inline_size
1065any_pending (EV_P)
1066{
1067 int pri;
1068
1069 for (pri = NUMPRI; pri--; )
1070 if (pendingcnt [pri])
1071 return 1;
1072
1073 return 0;
1074}
1075
1076void inline_speed
818call_pending (EV_P) 1077call_pending (EV_P)
819{ 1078{
820 int pri; 1079 int pri;
821 1080
822 for (pri = NUMPRI; pri--; ) 1081 for (pri = NUMPRI; pri--; )
823 while (pendingcnt [pri]) 1082 while (pendingcnt [pri])
824 { 1083 {
825 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 1084 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
826 1085
827 if (p->w) 1086 if (expect_true (p->w))
828 { 1087 {
1088 assert (("non-pending watcher on pending list", p->w->pending));
1089
829 p->w->pending = 0; 1090 p->w->pending = 0;
830 p->w->cb (EV_A_ p->w, p->events); 1091 EV_CB_INVOKE (p->w, p->events);
831 } 1092 }
832 } 1093 }
833} 1094}
834 1095
835static void 1096void inline_size
836timers_reify (EV_P) 1097timers_reify (EV_P)
837{ 1098{
838 while (timercnt && ((WT)timers [0])->at <= mn_now) 1099 while (timercnt && ((WT)timers [0])->at <= mn_now)
839 { 1100 {
840 struct ev_timer *w = timers [0]; 1101 ev_timer *w = timers [0];
841 1102
842 assert (("inactive timer on timer heap detected", ev_is_active (w))); 1103 assert (("inactive timer on timer heap detected", ev_is_active (w)));
843 1104
844 /* first reschedule or stop timer */ 1105 /* first reschedule or stop timer */
845 if (w->repeat) 1106 if (w->repeat)
846 { 1107 {
847 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 1108 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1109
848 ((WT)w)->at = mn_now + w->repeat; 1110 ((WT)w)->at += w->repeat;
1111 if (((WT)w)->at < mn_now)
1112 ((WT)w)->at = mn_now;
1113
849 downheap ((WT *)timers, timercnt, 0); 1114 downheap ((WT *)timers, timercnt, 0);
850 } 1115 }
851 else 1116 else
852 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ 1117 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
853 1118
854 event (EV_A_ (W)w, EV_TIMEOUT); 1119 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
855 } 1120 }
856} 1121}
857 1122
858static void 1123#if EV_PERIODIC_ENABLE
1124void inline_size
859periodics_reify (EV_P) 1125periodics_reify (EV_P)
860{ 1126{
861 while (periodiccnt && ((WT)periodics [0])->at <= rt_now) 1127 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
862 { 1128 {
863 struct ev_periodic *w = periodics [0]; 1129 ev_periodic *w = periodics [0];
864 1130
865 assert (("inactive timer on periodic heap detected", ev_is_active (w))); 1131 assert (("inactive timer on periodic heap detected", ev_is_active (w)));
866 1132
867 /* first reschedule or stop timer */ 1133 /* first reschedule or stop timer */
868 if (w->interval) 1134 if (w->reschedule_cb)
869 { 1135 {
1136 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
1137 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1138 downheap ((WT *)periodics, periodiccnt, 0);
1139 }
1140 else if (w->interval)
1141 {
870 ((WT)w)->at += floor ((rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval; 1142 ((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
871 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > rt_now)); 1143 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
872 downheap ((WT *)periodics, periodiccnt, 0); 1144 downheap ((WT *)periodics, periodiccnt, 0);
873 } 1145 }
874 else 1146 else
875 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 1147 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
876 1148
877 event (EV_A_ (W)w, EV_PERIODIC); 1149 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
878 } 1150 }
879} 1151}
880 1152
881static void 1153static void noinline
882periodics_reschedule (EV_P) 1154periodics_reschedule (EV_P)
883{ 1155{
884 int i; 1156 int i;
885 1157
886 /* adjust periodics after time jump */ 1158 /* adjust periodics after time jump */
887 for (i = 0; i < periodiccnt; ++i) 1159 for (i = 0; i < periodiccnt; ++i)
888 { 1160 {
889 struct ev_periodic *w = periodics [i]; 1161 ev_periodic *w = periodics [i];
890 1162
1163 if (w->reschedule_cb)
1164 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
891 if (w->interval) 1165 else if (w->interval)
892 {
893 ev_tstamp diff = ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval; 1166 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
894
895 if (fabs (diff) >= 1e-4)
896 {
897 ev_periodic_stop (EV_A_ w);
898 ev_periodic_start (EV_A_ w);
899
900 i = 0; /* restart loop, inefficient, but time jumps should be rare */
901 }
902 }
903 } 1167 }
904}
905 1168
906inline int 1169 /* now rebuild the heap */
1170 for (i = periodiccnt >> 1; i--; )
1171 downheap ((WT *)periodics, periodiccnt, i);
1172}
1173#endif
1174
1175int inline_size
907time_update_monotonic (EV_P) 1176time_update_monotonic (EV_P)
908{ 1177{
909 mn_now = get_clock (); 1178 mn_now = get_clock ();
910 1179
911 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 1180 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
912 { 1181 {
913 rt_now = rtmn_diff + mn_now; 1182 ev_rt_now = rtmn_diff + mn_now;
914 return 0; 1183 return 0;
915 } 1184 }
916 else 1185 else
917 { 1186 {
918 now_floor = mn_now; 1187 now_floor = mn_now;
919 rt_now = ev_time (); 1188 ev_rt_now = ev_time ();
920 return 1; 1189 return 1;
921 } 1190 }
922} 1191}
923 1192
924static void 1193void inline_size
925time_update (EV_P) 1194time_update (EV_P)
926{ 1195{
927 int i; 1196 int i;
928 1197
929#if EV_USE_MONOTONIC 1198#if EV_USE_MONOTONIC
… …
931 { 1200 {
932 if (time_update_monotonic (EV_A)) 1201 if (time_update_monotonic (EV_A))
933 { 1202 {
934 ev_tstamp odiff = rtmn_diff; 1203 ev_tstamp odiff = rtmn_diff;
935 1204
936 for (i = 4; --i; ) /* loop a few times, before making important decisions */ 1205 /* loop a few times, before making important decisions.
1206 * on the choice of "4": one iteration isn't enough,
1207 * in case we get preempted during the calls to
1208 * ev_time and get_clock. a second call is almost guarenteed
1209 * to succeed in that case, though. and looping a few more times
1210 * doesn't hurt either as we only do this on time-jumps or
1211 * in the unlikely event of getting preempted here.
1212 */
1213 for (i = 4; --i; )
937 { 1214 {
938 rtmn_diff = rt_now - mn_now; 1215 rtmn_diff = ev_rt_now - mn_now;
939 1216
940 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) 1217 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
941 return; /* all is well */ 1218 return; /* all is well */
942 1219
943 rt_now = ev_time (); 1220 ev_rt_now = ev_time ();
944 mn_now = get_clock (); 1221 mn_now = get_clock ();
945 now_floor = mn_now; 1222 now_floor = mn_now;
946 } 1223 }
947 1224
1225# if EV_PERIODIC_ENABLE
948 periodics_reschedule (EV_A); 1226 periodics_reschedule (EV_A);
1227# endif
949 /* no timer adjustment, as the monotonic clock doesn't jump */ 1228 /* no timer adjustment, as the monotonic clock doesn't jump */
950 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */ 1229 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
951 } 1230 }
952 } 1231 }
953 else 1232 else
954#endif 1233#endif
955 { 1234 {
956 rt_now = ev_time (); 1235 ev_rt_now = ev_time ();
957 1236
958 if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP)) 1237 if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
959 { 1238 {
1239#if EV_PERIODIC_ENABLE
960 periodics_reschedule (EV_A); 1240 periodics_reschedule (EV_A);
1241#endif
961 1242
962 /* adjust timers. this is easy, as the offset is the same for all */ 1243 /* adjust timers. this is easy, as the offset is the same for all */
963 for (i = 0; i < timercnt; ++i) 1244 for (i = 0; i < timercnt; ++i)
964 ((WT)timers [i])->at += rt_now - mn_now; 1245 ((WT)timers [i])->at += ev_rt_now - mn_now;
965 } 1246 }
966 1247
967 mn_now = rt_now; 1248 mn_now = ev_rt_now;
968 } 1249 }
969} 1250}
970 1251
971void 1252void
972ev_ref (EV_P) 1253ev_ref (EV_P)
… …
983static int loop_done; 1264static int loop_done;
984 1265
985void 1266void
986ev_loop (EV_P_ int flags) 1267ev_loop (EV_P_ int flags)
987{ 1268{
988 double block;
989 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0; 1269 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
1270 ? EVUNLOOP_ONE
1271 : EVUNLOOP_CANCEL;
990 1272
991 do 1273 while (activecnt)
992 { 1274 {
993 /* queue check watchers (and execute them) */ 1275 /* queue check watchers (and execute them) */
994 if (expect_false (preparecnt)) 1276 if (expect_false (preparecnt))
995 { 1277 {
996 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 1278 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
997 call_pending (EV_A); 1279 call_pending (EV_A);
998 } 1280 }
999 1281
1282 /* we might have forked, so reify kernel state if necessary */
1283 if (expect_false (postfork))
1284 loop_fork (EV_A);
1285
1000 /* update fd-related kernel structures */ 1286 /* update fd-related kernel structures */
1001 fd_reify (EV_A); 1287 fd_reify (EV_A);
1002 1288
1003 /* calculate blocking time */ 1289 /* calculate blocking time */
1290 {
1291 double block;
1004 1292
1005 /* we only need this for !monotonic clockor timers, but as we basically 1293 if (flags & EVLOOP_NONBLOCK || idlecnt)
1006 always have timers, we just calculate it always */ 1294 block = 0.; /* do not block at all */
1295 else
1296 {
1297 /* update time to cancel out callback processing overhead */
1007#if EV_USE_MONOTONIC 1298#if EV_USE_MONOTONIC
1008 if (expect_true (have_monotonic)) 1299 if (expect_true (have_monotonic))
1009 time_update_monotonic (EV_A); 1300 time_update_monotonic (EV_A);
1010 else 1301 else
1011#endif 1302#endif
1012 { 1303 {
1013 rt_now = ev_time (); 1304 ev_rt_now = ev_time ();
1014 mn_now = rt_now; 1305 mn_now = ev_rt_now;
1015 } 1306 }
1016 1307
1017 if (flags & EVLOOP_NONBLOCK || idlecnt)
1018 block = 0.;
1019 else
1020 {
1021 block = MAX_BLOCKTIME; 1308 block = MAX_BLOCKTIME;
1022 1309
1023 if (timercnt) 1310 if (timercnt)
1024 { 1311 {
1025 ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge; 1312 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1026 if (block > to) block = to; 1313 if (block > to) block = to;
1027 } 1314 }
1028 1315
1316#if EV_PERIODIC_ENABLE
1029 if (periodiccnt) 1317 if (periodiccnt)
1030 { 1318 {
1031 ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge; 1319 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1032 if (block > to) block = to; 1320 if (block > to) block = to;
1033 } 1321 }
1322#endif
1034 1323
1035 if (block < 0.) block = 0.; 1324 if (expect_false (block < 0.)) block = 0.;
1036 } 1325 }
1037 1326
1038 method_poll (EV_A_ block); 1327 backend_poll (EV_A_ block);
1328 }
1039 1329
1040 /* update rt_now, do magic */ 1330 /* update ev_rt_now, do magic */
1041 time_update (EV_A); 1331 time_update (EV_A);
1042 1332
1043 /* queue pending timers and reschedule them */ 1333 /* queue pending timers and reschedule them */
1044 timers_reify (EV_A); /* relative timers called last */ 1334 timers_reify (EV_A); /* relative timers called last */
1335#if EV_PERIODIC_ENABLE
1045 periodics_reify (EV_A); /* absolute timers called first */ 1336 periodics_reify (EV_A); /* absolute timers called first */
1337#endif
1046 1338
1047 /* queue idle watchers unless io or timers are pending */ 1339 /* queue idle watchers unless other events are pending */
1048 if (!pendingcnt) 1340 if (idlecnt && !any_pending (EV_A))
1049 queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); 1341 queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
1050 1342
1051 /* queue check watchers, to be executed first */ 1343 /* queue check watchers, to be executed first */
1052 if (checkcnt) 1344 if (expect_false (checkcnt))
1053 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 1345 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1054 1346
1055 call_pending (EV_A); 1347 call_pending (EV_A);
1056 }
1057 while (activecnt && !loop_done);
1058 1348
1059 if (loop_done != 2) 1349 if (expect_false (loop_done))
1060 loop_done = 0; 1350 break;
1351 }
1352
1353 if (loop_done == EVUNLOOP_ONE)
1354 loop_done = EVUNLOOP_CANCEL;
1061} 1355}
1062 1356
1063void 1357void
1064ev_unloop (EV_P_ int how) 1358ev_unloop (EV_P_ int how)
1065{ 1359{
1066 loop_done = how; 1360 loop_done = how;
1067} 1361}
1068 1362
1069/*****************************************************************************/ 1363/*****************************************************************************/
1070 1364
1071inline void 1365void inline_size
1072wlist_add (WL *head, WL elem) 1366wlist_add (WL *head, WL elem)
1073{ 1367{
1074 elem->next = *head; 1368 elem->next = *head;
1075 *head = elem; 1369 *head = elem;
1076} 1370}
1077 1371
1078inline void 1372void inline_size
1079wlist_del (WL *head, WL elem) 1373wlist_del (WL *head, WL elem)
1080{ 1374{
1081 while (*head) 1375 while (*head)
1082 { 1376 {
1083 if (*head == elem) 1377 if (*head == elem)
… …
1088 1382
1089 head = &(*head)->next; 1383 head = &(*head)->next;
1090 } 1384 }
1091} 1385}
1092 1386
1093inline void 1387void inline_speed
1094ev_clear_pending (EV_P_ W w) 1388ev_clear_pending (EV_P_ W w)
1095{ 1389{
1096 if (w->pending) 1390 if (w->pending)
1097 { 1391 {
1098 pendings [ABSPRI (w)][w->pending - 1].w = 0; 1392 pendings [ABSPRI (w)][w->pending - 1].w = 0;
1099 w->pending = 0; 1393 w->pending = 0;
1100 } 1394 }
1101} 1395}
1102 1396
1103inline void 1397void inline_speed
1104ev_start (EV_P_ W w, int active) 1398ev_start (EV_P_ W w, int active)
1105{ 1399{
1106 if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; 1400 if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
1107 if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI; 1401 if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1108 1402
1109 w->active = active; 1403 w->active = active;
1110 ev_ref (EV_A); 1404 ev_ref (EV_A);
1111} 1405}
1112 1406
1113inline void 1407void inline_size
1114ev_stop (EV_P_ W w) 1408ev_stop (EV_P_ W w)
1115{ 1409{
1116 ev_unref (EV_A); 1410 ev_unref (EV_A);
1117 w->active = 0; 1411 w->active = 0;
1118} 1412}
1119 1413
1120/*****************************************************************************/ 1414/*****************************************************************************/
1121 1415
1122void 1416void
1123ev_io_start (EV_P_ struct ev_io *w) 1417ev_io_start (EV_P_ ev_io *w)
1124{ 1418{
1125 int fd = w->fd; 1419 int fd = w->fd;
1126 1420
1127 if (ev_is_active (w)) 1421 if (expect_false (ev_is_active (w)))
1128 return; 1422 return;
1129 1423
1130 assert (("ev_io_start called with negative fd", fd >= 0)); 1424 assert (("ev_io_start called with negative fd", fd >= 0));
1131 1425
1132 ev_start (EV_A_ (W)w, 1); 1426 ev_start (EV_A_ (W)w, 1);
1133 array_needsize (anfds, anfdmax, fd + 1, anfds_init); 1427 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1134 wlist_add ((WL *)&anfds[fd].head, (WL)w); 1428 wlist_add ((WL *)&anfds[fd].head, (WL)w);
1135 1429
1136 fd_change (EV_A_ fd); 1430 fd_change (EV_A_ fd);
1137} 1431}
1138 1432
1139void 1433void
1140ev_io_stop (EV_P_ struct ev_io *w) 1434ev_io_stop (EV_P_ ev_io *w)
1141{ 1435{
1142 ev_clear_pending (EV_A_ (W)w); 1436 ev_clear_pending (EV_A_ (W)w);
1143 if (!ev_is_active (w)) 1437 if (expect_false (!ev_is_active (w)))
1144 return; 1438 return;
1439
1440 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1145 1441
1146 wlist_del ((WL *)&anfds[w->fd].head, (WL)w); 1442 wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
1147 ev_stop (EV_A_ (W)w); 1443 ev_stop (EV_A_ (W)w);
1148 1444
1149 fd_change (EV_A_ w->fd); 1445 fd_change (EV_A_ w->fd);
1150} 1446}
1151 1447
1152void 1448void
1153ev_timer_start (EV_P_ struct ev_timer *w) 1449ev_timer_start (EV_P_ ev_timer *w)
1154{ 1450{
1155 if (ev_is_active (w)) 1451 if (expect_false (ev_is_active (w)))
1156 return; 1452 return;
1157 1453
1158 ((WT)w)->at += mn_now; 1454 ((WT)w)->at += mn_now;
1159 1455
1160 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 1456 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1161 1457
1162 ev_start (EV_A_ (W)w, ++timercnt); 1458 ev_start (EV_A_ (W)w, ++timercnt);
1163 array_needsize (timers, timermax, timercnt, ); 1459 array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);
1164 timers [timercnt - 1] = w; 1460 timers [timercnt - 1] = w;
1165 upheap ((WT *)timers, timercnt - 1); 1461 upheap ((WT *)timers, timercnt - 1);
1166 1462
1167 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 1463 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1168} 1464}
1169 1465
1170void 1466void
1171ev_timer_stop (EV_P_ struct ev_timer *w) 1467ev_timer_stop (EV_P_ ev_timer *w)
1172{ 1468{
1173 ev_clear_pending (EV_A_ (W)w); 1469 ev_clear_pending (EV_A_ (W)w);
1174 if (!ev_is_active (w)) 1470 if (expect_false (!ev_is_active (w)))
1175 return; 1471 return;
1176 1472
1177 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 1473 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1178 1474
1179 if (((W)w)->active < timercnt--) 1475 if (expect_true (((W)w)->active < timercnt--))
1180 { 1476 {
1181 timers [((W)w)->active - 1] = timers [timercnt]; 1477 timers [((W)w)->active - 1] = timers [timercnt];
1182 downheap ((WT *)timers, timercnt, ((W)w)->active - 1); 1478 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1183 } 1479 }
1184 1480
1185 ((WT)w)->at = w->repeat; 1481 ((WT)w)->at -= mn_now;
1186 1482
1187 ev_stop (EV_A_ (W)w); 1483 ev_stop (EV_A_ (W)w);
1188} 1484}
1189 1485
1190void 1486void
1191ev_timer_again (EV_P_ struct ev_timer *w) 1487ev_timer_again (EV_P_ ev_timer *w)
1192{ 1488{
1193 if (ev_is_active (w)) 1489 if (ev_is_active (w))
1194 { 1490 {
1195 if (w->repeat) 1491 if (w->repeat)
1196 { 1492 {
1197 ((WT)w)->at = mn_now + w->repeat; 1493 ((WT)w)->at = mn_now + w->repeat;
1198 downheap ((WT *)timers, timercnt, ((W)w)->active - 1); 1494 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1199 } 1495 }
1200 else 1496 else
1201 ev_timer_stop (EV_A_ w); 1497 ev_timer_stop (EV_A_ w);
1202 } 1498 }
1203 else if (w->repeat) 1499 else if (w->repeat)
1500 {
1501 w->at = w->repeat;
1204 ev_timer_start (EV_A_ w); 1502 ev_timer_start (EV_A_ w);
1503 }
1205} 1504}
1206 1505
1506#if EV_PERIODIC_ENABLE
1207void 1507void
1208ev_periodic_start (EV_P_ struct ev_periodic *w) 1508ev_periodic_start (EV_P_ ev_periodic *w)
1209{ 1509{
1210 if (ev_is_active (w)) 1510 if (expect_false (ev_is_active (w)))
1211 return; 1511 return;
1212 1512
1513 if (w->reschedule_cb)
1514 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1515 else if (w->interval)
1516 {
1213 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 1517 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1214
1215 /* this formula differs from the one in periodic_reify because we do not always round up */ 1518 /* this formula differs from the one in periodic_reify because we do not always round up */
1216 if (w->interval)
1217 ((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval; 1519 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
1520 }
1218 1521
1219 ev_start (EV_A_ (W)w, ++periodiccnt); 1522 ev_start (EV_A_ (W)w, ++periodiccnt);
1220 array_needsize (periodics, periodicmax, periodiccnt, ); 1523 array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1221 periodics [periodiccnt - 1] = w; 1524 periodics [periodiccnt - 1] = w;
1222 upheap ((WT *)periodics, periodiccnt - 1); 1525 upheap ((WT *)periodics, periodiccnt - 1);
1223 1526
1224 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1527 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1225} 1528}
1226 1529
1227void 1530void
1228ev_periodic_stop (EV_P_ struct ev_periodic *w) 1531ev_periodic_stop (EV_P_ ev_periodic *w)
1229{ 1532{
1230 ev_clear_pending (EV_A_ (W)w); 1533 ev_clear_pending (EV_A_ (W)w);
1231 if (!ev_is_active (w)) 1534 if (expect_false (!ev_is_active (w)))
1232 return; 1535 return;
1233 1536
1234 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1537 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1235 1538
1236 if (((W)w)->active < periodiccnt--) 1539 if (expect_true (((W)w)->active < periodiccnt--))
1237 { 1540 {
1238 periodics [((W)w)->active - 1] = periodics [periodiccnt]; 1541 periodics [((W)w)->active - 1] = periodics [periodiccnt];
1239 downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1); 1542 adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
1240 } 1543 }
1241 1544
1242 ev_stop (EV_A_ (W)w); 1545 ev_stop (EV_A_ (W)w);
1243} 1546}
1244 1547
1245void 1548void
1549ev_periodic_again (EV_P_ ev_periodic *w)
1550{
1551 /* TODO: use adjustheap and recalculation */
1552 ev_periodic_stop (EV_A_ w);
1553 ev_periodic_start (EV_A_ w);
1554}
1555#endif
1556
1557void
1246ev_idle_start (EV_P_ struct ev_idle *w) 1558ev_idle_start (EV_P_ ev_idle *w)
1247{ 1559{
1248 if (ev_is_active (w)) 1560 if (expect_false (ev_is_active (w)))
1249 return; 1561 return;
1250 1562
1251 ev_start (EV_A_ (W)w, ++idlecnt); 1563 ev_start (EV_A_ (W)w, ++idlecnt);
1252 array_needsize (idles, idlemax, idlecnt, ); 1564 array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2);
1253 idles [idlecnt - 1] = w; 1565 idles [idlecnt - 1] = w;
1254} 1566}
1255 1567
1256void 1568void
1257ev_idle_stop (EV_P_ struct ev_idle *w) 1569ev_idle_stop (EV_P_ ev_idle *w)
1258{ 1570{
1259 ev_clear_pending (EV_A_ (W)w); 1571 ev_clear_pending (EV_A_ (W)w);
1260 if (ev_is_active (w)) 1572 if (expect_false (!ev_is_active (w)))
1261 return; 1573 return;
1262 1574
1575 {
1576 int active = ((W)w)->active;
1263 idles [((W)w)->active - 1] = idles [--idlecnt]; 1577 idles [active - 1] = idles [--idlecnt];
1578 ((W)idles [active - 1])->active = active;
1579 }
1580
1264 ev_stop (EV_A_ (W)w); 1581 ev_stop (EV_A_ (W)w);
1265} 1582}
1266 1583
1267void 1584void
1268ev_prepare_start (EV_P_ struct ev_prepare *w) 1585ev_prepare_start (EV_P_ ev_prepare *w)
1269{ 1586{
1270 if (ev_is_active (w)) 1587 if (expect_false (ev_is_active (w)))
1271 return; 1588 return;
1272 1589
1273 ev_start (EV_A_ (W)w, ++preparecnt); 1590 ev_start (EV_A_ (W)w, ++preparecnt);
1274 array_needsize (prepares, preparemax, preparecnt, ); 1591 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
1275 prepares [preparecnt - 1] = w; 1592 prepares [preparecnt - 1] = w;
1276} 1593}
1277 1594
1278void 1595void
1279ev_prepare_stop (EV_P_ struct ev_prepare *w) 1596ev_prepare_stop (EV_P_ ev_prepare *w)
1280{ 1597{
1281 ev_clear_pending (EV_A_ (W)w); 1598 ev_clear_pending (EV_A_ (W)w);
1282 if (ev_is_active (w)) 1599 if (expect_false (!ev_is_active (w)))
1283 return; 1600 return;
1284 1601
1602 {
1603 int active = ((W)w)->active;
1285 prepares [((W)w)->active - 1] = prepares [--preparecnt]; 1604 prepares [active - 1] = prepares [--preparecnt];
1605 ((W)prepares [active - 1])->active = active;
1606 }
1607
1286 ev_stop (EV_A_ (W)w); 1608 ev_stop (EV_A_ (W)w);
1287} 1609}
1288 1610
1289void 1611void
1290ev_check_start (EV_P_ struct ev_check *w) 1612ev_check_start (EV_P_ ev_check *w)
1291{ 1613{
1292 if (ev_is_active (w)) 1614 if (expect_false (ev_is_active (w)))
1293 return; 1615 return;
1294 1616
1295 ev_start (EV_A_ (W)w, ++checkcnt); 1617 ev_start (EV_A_ (W)w, ++checkcnt);
1296 array_needsize (checks, checkmax, checkcnt, ); 1618 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
1297 checks [checkcnt - 1] = w; 1619 checks [checkcnt - 1] = w;
1298} 1620}
1299 1621
1300void 1622void
1301ev_check_stop (EV_P_ struct ev_check *w) 1623ev_check_stop (EV_P_ ev_check *w)
1302{ 1624{
1303 ev_clear_pending (EV_A_ (W)w); 1625 ev_clear_pending (EV_A_ (W)w);
1304 if (ev_is_active (w)) 1626 if (expect_false (!ev_is_active (w)))
1305 return; 1627 return;
1306 1628
1629 {
1630 int active = ((W)w)->active;
1307 checks [((W)w)->active - 1] = checks [--checkcnt]; 1631 checks [active - 1] = checks [--checkcnt];
1632 ((W)checks [active - 1])->active = active;
1633 }
1634
1308 ev_stop (EV_A_ (W)w); 1635 ev_stop (EV_A_ (W)w);
1309} 1636}
1310 1637
1311#ifndef SA_RESTART 1638#ifndef SA_RESTART
1312# define SA_RESTART 0 1639# define SA_RESTART 0
1313#endif 1640#endif
1314 1641
1315void 1642void
1316ev_signal_start (EV_P_ struct ev_signal *w) 1643ev_signal_start (EV_P_ ev_signal *w)
1317{ 1644{
1318#if EV_MULTIPLICITY 1645#if EV_MULTIPLICITY
1319 assert (("signal watchers are only supported in the default loop", loop == default_loop)); 1646 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1320#endif 1647#endif
1321 if (ev_is_active (w)) 1648 if (expect_false (ev_is_active (w)))
1322 return; 1649 return;
1323 1650
1324 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 1651 assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1325 1652
1326 ev_start (EV_A_ (W)w, 1); 1653 ev_start (EV_A_ (W)w, 1);
1327 array_needsize (signals, signalmax, w->signum, signals_init); 1654 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1328 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); 1655 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1329 1656
1330 if (!((WL)w)->next) 1657 if (!((WL)w)->next)
1331 { 1658 {
1332#if WIN32 1659#if _WIN32
1333 signal (w->signum, sighandler); 1660 signal (w->signum, sighandler);
1334#else 1661#else
1335 struct sigaction sa; 1662 struct sigaction sa;
1336 sa.sa_handler = sighandler; 1663 sa.sa_handler = sighandler;
1337 sigfillset (&sa.sa_mask); 1664 sigfillset (&sa.sa_mask);
… …
1340#endif 1667#endif
1341 } 1668 }
1342} 1669}
1343 1670
1344void 1671void
1345ev_signal_stop (EV_P_ struct ev_signal *w) 1672ev_signal_stop (EV_P_ ev_signal *w)
1346{ 1673{
1347 ev_clear_pending (EV_A_ (W)w); 1674 ev_clear_pending (EV_A_ (W)w);
1348 if (!ev_is_active (w)) 1675 if (expect_false (!ev_is_active (w)))
1349 return; 1676 return;
1350 1677
1351 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); 1678 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1352 ev_stop (EV_A_ (W)w); 1679 ev_stop (EV_A_ (W)w);
1353 1680
1354 if (!signals [w->signum - 1].head) 1681 if (!signals [w->signum - 1].head)
1355 signal (w->signum, SIG_DFL); 1682 signal (w->signum, SIG_DFL);
1356} 1683}
1357 1684
1358void 1685void
1359ev_child_start (EV_P_ struct ev_child *w) 1686ev_child_start (EV_P_ ev_child *w)
1360{ 1687{
1361#if EV_MULTIPLICITY 1688#if EV_MULTIPLICITY
1362 assert (("child watchers are only supported in the default loop", loop == default_loop)); 1689 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1363#endif 1690#endif
1364 if (ev_is_active (w)) 1691 if (expect_false (ev_is_active (w)))
1365 return; 1692 return;
1366 1693
1367 ev_start (EV_A_ (W)w, 1); 1694 ev_start (EV_A_ (W)w, 1);
1368 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1695 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1369} 1696}
1370 1697
1371void 1698void
1372ev_child_stop (EV_P_ struct ev_child *w) 1699ev_child_stop (EV_P_ ev_child *w)
1373{ 1700{
1374 ev_clear_pending (EV_A_ (W)w); 1701 ev_clear_pending (EV_A_ (W)w);
1375 if (ev_is_active (w)) 1702 if (expect_false (!ev_is_active (w)))
1376 return; 1703 return;
1377 1704
1378 wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1705 wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1379 ev_stop (EV_A_ (W)w); 1706 ev_stop (EV_A_ (W)w);
1380} 1707}
1381 1708
1709#if EV_EMBED_ENABLE
1710void noinline
1711ev_embed_sweep (EV_P_ ev_embed *w)
1712{
1713 ev_loop (w->loop, EVLOOP_NONBLOCK);
1714}
1715
1716static void
1717embed_cb (EV_P_ ev_io *io, int revents)
1718{
1719 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
1720
1721 if (ev_cb (w))
1722 ev_feed_event (EV_A_ (W)w, EV_EMBED);
1723 else
1724 ev_embed_sweep (loop, w);
1725}
1726
1727void
1728ev_embed_start (EV_P_ ev_embed *w)
1729{
1730 if (expect_false (ev_is_active (w)))
1731 return;
1732
1733 {
1734 struct ev_loop *loop = w->loop;
1735 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
1736 ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
1737 }
1738
1739 ev_set_priority (&w->io, ev_priority (w));
1740 ev_io_start (EV_A_ &w->io);
1741
1742 ev_start (EV_A_ (W)w, 1);
1743}
1744
1745void
1746ev_embed_stop (EV_P_ ev_embed *w)
1747{
1748 ev_clear_pending (EV_A_ (W)w);
1749 if (expect_false (!ev_is_active (w)))
1750 return;
1751
1752 ev_io_stop (EV_A_ &w->io);
1753
1754 ev_stop (EV_A_ (W)w);
1755}
1756#endif
1757
1758#if EV_STAT_ENABLE
1759
1760# ifdef _WIN32
1761# define lstat(a,b) stat(a,b)
1762# endif
1763
1764void
1765ev_stat_stat (EV_P_ ev_stat *w)
1766{
1767 if (lstat (w->path, &w->attr) < 0)
1768 w->attr.st_nlink = 0;
1769 else if (!w->attr.st_nlink)
1770 w->attr.st_nlink = 1;
1771}
1772
1773static void
1774stat_timer_cb (EV_P_ ev_timer *w_, int revents)
1775{
1776 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
1777
1778 /* we copy this here each the time so that */
1779 /* prev has the old value when the callback gets invoked */
1780 w->prev = w->attr;
1781 ev_stat_stat (EV_A_ w);
1782
1783 if (memcmp (&w->prev, &w->attr, sizeof (ev_statdata)))
1784 ev_feed_event (EV_A_ w, EV_STAT);
1785}
1786
1787void
1788ev_stat_start (EV_P_ ev_stat *w)
1789{
1790 if (expect_false (ev_is_active (w)))
1791 return;
1792
1793 /* since we use memcmp, we need to clear any padding data etc. */
1794 memset (&w->prev, 0, sizeof (ev_statdata));
1795 memset (&w->attr, 0, sizeof (ev_statdata));
1796
1797 ev_stat_stat (EV_A_ w);
1798
1799 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
1800 ev_set_priority (&w->timer, ev_priority (w));
1801 ev_timer_start (EV_A_ &w->timer);
1802
1803 ev_start (EV_A_ (W)w, 1);
1804}
1805
1806void
1807ev_stat_stop (EV_P_ ev_stat *w)
1808{
1809 ev_clear_pending (EV_A_ (W)w);
1810 if (expect_false (!ev_is_active (w)))
1811 return;
1812
1813 ev_timer_stop (EV_A_ &w->timer);
1814
1815 ev_stop (EV_A_ (W)w);
1816}
1817#endif
1818
1382/*****************************************************************************/ 1819/*****************************************************************************/
1383 1820
1384struct ev_once 1821struct ev_once
1385{ 1822{
1386 struct ev_io io; 1823 ev_io io;
1387 struct ev_timer to; 1824 ev_timer to;
1388 void (*cb)(int revents, void *arg); 1825 void (*cb)(int revents, void *arg);
1389 void *arg; 1826 void *arg;
1390}; 1827};
1391 1828
1392static void 1829static void
… …
1395 void (*cb)(int revents, void *arg) = once->cb; 1832 void (*cb)(int revents, void *arg) = once->cb;
1396 void *arg = once->arg; 1833 void *arg = once->arg;
1397 1834
1398 ev_io_stop (EV_A_ &once->io); 1835 ev_io_stop (EV_A_ &once->io);
1399 ev_timer_stop (EV_A_ &once->to); 1836 ev_timer_stop (EV_A_ &once->to);
1400 free (once); 1837 ev_free (once);
1401 1838
1402 cb (revents, arg); 1839 cb (revents, arg);
1403} 1840}
1404 1841
1405static void 1842static void
1406once_cb_io (EV_P_ struct ev_io *w, int revents) 1843once_cb_io (EV_P_ ev_io *w, int revents)
1407{ 1844{
1408 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 1845 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1409} 1846}
1410 1847
1411static void 1848static void
1412once_cb_to (EV_P_ struct ev_timer *w, int revents) 1849once_cb_to (EV_P_ ev_timer *w, int revents)
1413{ 1850{
1414 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 1851 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1415} 1852}
1416 1853
1417void 1854void
1418ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 1855ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1419{ 1856{
1420 struct ev_once *once = malloc (sizeof (struct ev_once)); 1857 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1421 1858
1422 if (!once) 1859 if (expect_false (!once))
1860 {
1423 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 1861 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1424 else 1862 return;
1425 { 1863 }
1864
1426 once->cb = cb; 1865 once->cb = cb;
1427 once->arg = arg; 1866 once->arg = arg;
1428 1867
1429 ev_watcher_init (&once->io, once_cb_io); 1868 ev_init (&once->io, once_cb_io);
1430 if (fd >= 0) 1869 if (fd >= 0)
1431 { 1870 {
1432 ev_io_set (&once->io, fd, events); 1871 ev_io_set (&once->io, fd, events);
1433 ev_io_start (EV_A_ &once->io); 1872 ev_io_start (EV_A_ &once->io);
1434 } 1873 }
1435 1874
1436 ev_watcher_init (&once->to, once_cb_to); 1875 ev_init (&once->to, once_cb_to);
1437 if (timeout >= 0.) 1876 if (timeout >= 0.)
1438 { 1877 {
1439 ev_timer_set (&once->to, timeout, 0.); 1878 ev_timer_set (&once->to, timeout, 0.);
1440 ev_timer_start (EV_A_ &once->to); 1879 ev_timer_start (EV_A_ &once->to);
1441 }
1442 } 1880 }
1443} 1881}
1444 1882
1883#ifdef __cplusplus
1884}
1885#endif
1886

Diff Legend

– Removed lines
+ Added lines
< Changed lines
> Changed lines