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Comparing libev/ev.c (file contents):
Revision 1.139 by root, Sun Nov 25 09:24:37 2007 UTC vs.
Revision 1.265 by root, Thu Oct 23 04:56:49 2008 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007,2008 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * modification, are permitted provided that the following conditions are 8 * tion, are permitted provided that the following conditions are met:
9 * met: 9 *
10 * 1. Redistributions of source code must retain the above copyright notice,
11 * this list of conditions and the following disclaimer.
12 *
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
22 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
23 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
24 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
25 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
26 * OF THE POSSIBILITY OF SUCH DAMAGE.
10 * 27 *
11 * * Redistributions of source code must retain the above copyright 28 * Alternatively, the contents of this file may be used under the terms of
12 * notice, this list of conditions and the following disclaimer. 29 * the GNU General Public License ("GPL") version 2 or any later version,
13 * 30 * in which case the provisions of the GPL are applicable instead of
14 * * Redistributions in binary form must reproduce the above 31 * the above. If you wish to allow the use of your version of this file
15 * copyright notice, this list of conditions and the following 32 * only under the terms of the GPL and not to allow others to use your
16 * disclaimer in the documentation and/or other materials provided 33 * version of this file under the BSD license, indicate your decision
17 * with the distribution. 34 * by deleting the provisions above and replace them with the notice
18 * 35 * and other provisions required by the GPL. If you do not delete the
19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 36 * provisions above, a recipient may use your version of this file under
20 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 37 * either the BSD or the GPL.
21 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
22 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
23 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
24 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
25 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
26 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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.
30 */ 38 */
31 39
32#ifdef __cplusplus 40#ifdef __cplusplus
33extern "C" { 41extern "C" {
34#endif 42#endif
35 43
44/* this big block deduces configuration from config.h */
36#ifndef EV_STANDALONE 45#ifndef EV_STANDALONE
37# ifdef EV_CONFIG_H 46# ifdef EV_CONFIG_H
38# include EV_CONFIG_H 47# include EV_CONFIG_H
39# else 48# else
40# include "config.h" 49# include "config.h"
… …
51# ifndef EV_USE_MONOTONIC 60# ifndef EV_USE_MONOTONIC
52# define EV_USE_MONOTONIC 0 61# define EV_USE_MONOTONIC 0
53# endif 62# endif
54# ifndef EV_USE_REALTIME 63# ifndef EV_USE_REALTIME
55# define EV_USE_REALTIME 0 64# define EV_USE_REALTIME 0
65# endif
66# endif
67
68# ifndef EV_USE_NANOSLEEP
69# if HAVE_NANOSLEEP
70# define EV_USE_NANOSLEEP 1
71# else
72# define EV_USE_NANOSLEEP 0
56# endif 73# endif
57# endif 74# endif
58 75
59# ifndef EV_USE_SELECT 76# ifndef EV_USE_SELECT
60# if HAVE_SELECT && HAVE_SYS_SELECT_H 77# if HAVE_SELECT && HAVE_SYS_SELECT_H
… …
94# else 111# else
95# define EV_USE_PORT 0 112# define EV_USE_PORT 0
96# endif 113# endif
97# endif 114# endif
98 115
116# ifndef EV_USE_INOTIFY
117# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
118# define EV_USE_INOTIFY 1
119# else
120# define EV_USE_INOTIFY 0
121# endif
122# endif
123
124# ifndef EV_USE_EVENTFD
125# if HAVE_EVENTFD
126# define EV_USE_EVENTFD 1
127# else
128# define EV_USE_EVENTFD 0
129# endif
130# endif
131
99#endif 132#endif
100 133
101#include <math.h> 134#include <math.h>
102#include <stdlib.h> 135#include <stdlib.h>
103#include <fcntl.h> 136#include <fcntl.h>
… …
110#include <sys/types.h> 143#include <sys/types.h>
111#include <time.h> 144#include <time.h>
112 145
113#include <signal.h> 146#include <signal.h>
114 147
148#ifdef EV_H
149# include EV_H
150#else
151# include "ev.h"
152#endif
153
115#ifndef _WIN32 154#ifndef _WIN32
116# include <unistd.h>
117# include <sys/time.h> 155# include <sys/time.h>
118# include <sys/wait.h> 156# include <sys/wait.h>
157# include <unistd.h>
119#else 158#else
159# include <io.h>
120# define WIN32_LEAN_AND_MEAN 160# define WIN32_LEAN_AND_MEAN
121# include <windows.h> 161# include <windows.h>
122# ifndef EV_SELECT_IS_WINSOCKET 162# ifndef EV_SELECT_IS_WINSOCKET
123# define EV_SELECT_IS_WINSOCKET 1 163# define EV_SELECT_IS_WINSOCKET 1
124# endif 164# endif
125#endif 165#endif
126 166
127/**/ 167/* this block tries to deduce configuration from header-defined symbols and defaults */
128 168
129#ifndef EV_USE_MONOTONIC 169#ifndef EV_USE_MONOTONIC
170# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
171# define EV_USE_MONOTONIC 1
172# else
130# define EV_USE_MONOTONIC 0 173# define EV_USE_MONOTONIC 0
174# endif
131#endif 175#endif
132 176
133#ifndef EV_USE_REALTIME 177#ifndef EV_USE_REALTIME
134# define EV_USE_REALTIME 0 178# define EV_USE_REALTIME 0
179#endif
180
181#ifndef EV_USE_NANOSLEEP
182# if _POSIX_C_SOURCE >= 199309L
183# define EV_USE_NANOSLEEP 1
184# else
185# define EV_USE_NANOSLEEP 0
186# endif
135#endif 187#endif
136 188
137#ifndef EV_USE_SELECT 189#ifndef EV_USE_SELECT
138# define EV_USE_SELECT 1 190# define EV_USE_SELECT 1
139#endif 191#endif
… …
145# define EV_USE_POLL 1 197# define EV_USE_POLL 1
146# endif 198# endif
147#endif 199#endif
148 200
149#ifndef EV_USE_EPOLL 201#ifndef EV_USE_EPOLL
202# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
203# define EV_USE_EPOLL 1
204# else
150# define EV_USE_EPOLL 0 205# define EV_USE_EPOLL 0
206# endif
151#endif 207#endif
152 208
153#ifndef EV_USE_KQUEUE 209#ifndef EV_USE_KQUEUE
154# define EV_USE_KQUEUE 0 210# define EV_USE_KQUEUE 0
155#endif 211#endif
156 212
157#ifndef EV_USE_PORT 213#ifndef EV_USE_PORT
158# define EV_USE_PORT 0 214# define EV_USE_PORT 0
159#endif 215#endif
160 216
161/**/ 217#ifndef EV_USE_INOTIFY
218# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
219# define EV_USE_INOTIFY 1
220# else
221# define EV_USE_INOTIFY 0
222# endif
223#endif
224
225#ifndef EV_PID_HASHSIZE
226# if EV_MINIMAL
227# define EV_PID_HASHSIZE 1
228# else
229# define EV_PID_HASHSIZE 16
230# endif
231#endif
232
233#ifndef EV_INOTIFY_HASHSIZE
234# if EV_MINIMAL
235# define EV_INOTIFY_HASHSIZE 1
236# else
237# define EV_INOTIFY_HASHSIZE 16
238# endif
239#endif
240
241#ifndef EV_USE_EVENTFD
242# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
243# define EV_USE_EVENTFD 1
244# else
245# define EV_USE_EVENTFD 0
246# endif
247#endif
248
249#if 0 /* debugging */
250# define EV_VERIFY 3
251# define EV_USE_4HEAP 1
252# define EV_HEAP_CACHE_AT 1
253#endif
254
255#ifndef EV_VERIFY
256# define EV_VERIFY !EV_MINIMAL
257#endif
258
259#ifndef EV_USE_4HEAP
260# define EV_USE_4HEAP !EV_MINIMAL
261#endif
262
263#ifndef EV_HEAP_CACHE_AT
264# define EV_HEAP_CACHE_AT !EV_MINIMAL
265#endif
266
267/* this block fixes any misconfiguration where we know we run into trouble otherwise */
162 268
163#ifndef CLOCK_MONOTONIC 269#ifndef CLOCK_MONOTONIC
164# undef EV_USE_MONOTONIC 270# undef EV_USE_MONOTONIC
165# define EV_USE_MONOTONIC 0 271# define EV_USE_MONOTONIC 0
166#endif 272#endif
… …
168#ifndef CLOCK_REALTIME 274#ifndef CLOCK_REALTIME
169# undef EV_USE_REALTIME 275# undef EV_USE_REALTIME
170# define EV_USE_REALTIME 0 276# define EV_USE_REALTIME 0
171#endif 277#endif
172 278
279#if !EV_STAT_ENABLE
280# undef EV_USE_INOTIFY
281# define EV_USE_INOTIFY 0
282#endif
283
284#if !EV_USE_NANOSLEEP
285# ifndef _WIN32
286# include <sys/select.h>
287# endif
288#endif
289
290#if EV_USE_INOTIFY
291# include <sys/utsname.h>
292# include <sys/inotify.h>
293/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
294# ifndef IN_DONT_FOLLOW
295# undef EV_USE_INOTIFY
296# define EV_USE_INOTIFY 0
297# endif
298#endif
299
173#if EV_SELECT_IS_WINSOCKET 300#if EV_SELECT_IS_WINSOCKET
174# include <winsock.h> 301# include <winsock.h>
175#endif 302#endif
176 303
304#if EV_USE_EVENTFD
305/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
306# include <stdint.h>
307# ifdef __cplusplus
308extern "C" {
309# endif
310int eventfd (unsigned int initval, int flags);
311# ifdef __cplusplus
312}
313# endif
314#endif
315
177/**/ 316/**/
317
318#if EV_VERIFY >= 3
319# define EV_FREQUENT_CHECK ev_loop_verify (EV_A)
320#else
321# define EV_FREQUENT_CHECK do { } while (0)
322#endif
323
324/*
325 * This is used to avoid floating point rounding problems.
326 * It is added to ev_rt_now when scheduling periodics
327 * to ensure progress, time-wise, even when rounding
328 * errors are against us.
329 * This value is good at least till the year 4000.
330 * Better solutions welcome.
331 */
332#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
178 333
179#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 334#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
180#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 335#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
181#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
182/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds */ 336/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
183 337
184#ifdef EV_H
185# include EV_H
186#else
187# include "ev.h"
188#endif
189
190#if __GNUC__ >= 3 338#if __GNUC__ >= 4
191# define expect(expr,value) __builtin_expect ((expr),(value)) 339# define expect(expr,value) __builtin_expect ((expr),(value))
192# define inline static inline 340# define noinline __attribute__ ((noinline))
193#else 341#else
194# define expect(expr,value) (expr) 342# define expect(expr,value) (expr)
195# define inline static 343# define noinline
344# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
345# define inline
346# endif
196#endif 347#endif
197 348
198#define expect_false(expr) expect ((expr) != 0, 0) 349#define expect_false(expr) expect ((expr) != 0, 0)
199#define expect_true(expr) expect ((expr) != 0, 1) 350#define expect_true(expr) expect ((expr) != 0, 1)
351#define inline_size static inline
352
353#if EV_MINIMAL
354# define inline_speed static noinline
355#else
356# define inline_speed static inline
357#endif
200 358
201#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 359#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
202#define ABSPRI(w) ((w)->priority - EV_MINPRI) 360#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
203 361
204#define EMPTY0 /* required for microsofts broken pseudo-c compiler */ 362#define EMPTY /* required for microsofts broken pseudo-c compiler */
205#define EMPTY2(a,b) /* used to suppress some warnings */ 363#define EMPTY2(a,b) /* used to suppress some warnings */
206 364
207typedef ev_watcher *W; 365typedef ev_watcher *W;
208typedef ev_watcher_list *WL; 366typedef ev_watcher_list *WL;
209typedef ev_watcher_time *WT; 367typedef ev_watcher_time *WT;
210 368
369#define ev_active(w) ((W)(w))->active
370#define ev_at(w) ((WT)(w))->at
371
372#if EV_USE_MONOTONIC
373/* sig_atomic_t is used to avoid per-thread variables or locking but still */
374/* giving it a reasonably high chance of working on typical architetcures */
211static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 375static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
376#endif
212 377
213#ifdef _WIN32 378#ifdef _WIN32
214# include "ev_win32.c" 379# include "ev_win32.c"
215#endif 380#endif
216 381
217/*****************************************************************************/ 382/*****************************************************************************/
218 383
219static void (*syserr_cb)(const char *msg); 384static void (*syserr_cb)(const char *msg);
220 385
386void
221void ev_set_syserr_cb (void (*cb)(const char *msg)) 387ev_set_syserr_cb (void (*cb)(const char *msg))
222{ 388{
223 syserr_cb = cb; 389 syserr_cb = cb;
224} 390}
225 391
226static void 392static void noinline
227syserr (const char *msg) 393syserr (const char *msg)
228{ 394{
229 if (!msg) 395 if (!msg)
230 msg = "(libev) system error"; 396 msg = "(libev) system error";
231 397
… …
236 perror (msg); 402 perror (msg);
237 abort (); 403 abort ();
238 } 404 }
239} 405}
240 406
407static void *
408ev_realloc_emul (void *ptr, long size)
409{
410 /* some systems, notably openbsd and darwin, fail to properly
411 * implement realloc (x, 0) (as required by both ansi c-98 and
412 * the single unix specification, so work around them here.
413 */
414
415 if (size)
416 return realloc (ptr, size);
417
418 free (ptr);
419 return 0;
420}
421
241static void *(*alloc)(void *ptr, long size); 422static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
242 423
424void
243void ev_set_allocator (void *(*cb)(void *ptr, long size)) 425ev_set_allocator (void *(*cb)(void *ptr, long size))
244{ 426{
245 alloc = cb; 427 alloc = cb;
246} 428}
247 429
248static void * 430inline_speed void *
249ev_realloc (void *ptr, long size) 431ev_realloc (void *ptr, long size)
250{ 432{
251 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size); 433 ptr = alloc (ptr, size);
252 434
253 if (!ptr && size) 435 if (!ptr && size)
254 { 436 {
255 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 437 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
256 abort (); 438 abort ();
… …
267typedef struct 449typedef struct
268{ 450{
269 WL head; 451 WL head;
270 unsigned char events; 452 unsigned char events;
271 unsigned char reify; 453 unsigned char reify;
454 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
455 unsigned char unused; /* currently unused padding */
272#if EV_SELECT_IS_WINSOCKET 456#if EV_SELECT_IS_WINSOCKET
273 SOCKET handle; 457 SOCKET handle;
274#endif 458#endif
275} ANFD; 459} ANFD;
276 460
277typedef struct 461typedef struct
278{ 462{
279 W w; 463 W w;
280 int events; 464 int events;
281} ANPENDING; 465} ANPENDING;
466
467#if EV_USE_INOTIFY
468/* hash table entry per inotify-id */
469typedef struct
470{
471 WL head;
472} ANFS;
473#endif
474
475/* Heap Entry */
476#if EV_HEAP_CACHE_AT
477 typedef struct {
478 ev_tstamp at;
479 WT w;
480 } ANHE;
481
482 #define ANHE_w(he) (he).w /* access watcher, read-write */
483 #define ANHE_at(he) (he).at /* access cached at, read-only */
484 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
485#else
486 typedef WT ANHE;
487
488 #define ANHE_w(he) (he)
489 #define ANHE_at(he) (he)->at
490 #define ANHE_at_cache(he)
491#endif
282 492
283#if EV_MULTIPLICITY 493#if EV_MULTIPLICITY
284 494
285 struct ev_loop 495 struct ev_loop
286 { 496 {
… …
320 gettimeofday (&tv, 0); 530 gettimeofday (&tv, 0);
321 return tv.tv_sec + tv.tv_usec * 1e-6; 531 return tv.tv_sec + tv.tv_usec * 1e-6;
322#endif 532#endif
323} 533}
324 534
325inline ev_tstamp 535ev_tstamp inline_size
326get_clock (void) 536get_clock (void)
327{ 537{
328#if EV_USE_MONOTONIC 538#if EV_USE_MONOTONIC
329 if (expect_true (have_monotonic)) 539 if (expect_true (have_monotonic))
330 { 540 {
… …
343{ 553{
344 return ev_rt_now; 554 return ev_rt_now;
345} 555}
346#endif 556#endif
347 557
348#define array_roundsize(type,n) (((n) | 4) & ~3) 558void
559ev_sleep (ev_tstamp delay)
560{
561 if (delay > 0.)
562 {
563#if EV_USE_NANOSLEEP
564 struct timespec ts;
565
566 ts.tv_sec = (time_t)delay;
567 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
568
569 nanosleep (&ts, 0);
570#elif defined(_WIN32)
571 Sleep ((unsigned long)(delay * 1e3));
572#else
573 struct timeval tv;
574
575 tv.tv_sec = (time_t)delay;
576 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
577
578 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
579 /* somehting nto guaranteed by newer posix versions, but guaranteed */
580 /* by older ones */
581 select (0, 0, 0, 0, &tv);
582#endif
583 }
584}
585
586/*****************************************************************************/
587
588#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
589
590int inline_size
591array_nextsize (int elem, int cur, int cnt)
592{
593 int ncur = cur + 1;
594
595 do
596 ncur <<= 1;
597 while (cnt > ncur);
598
599 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */
600 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
601 {
602 ncur *= elem;
603 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
604 ncur = ncur - sizeof (void *) * 4;
605 ncur /= elem;
606 }
607
608 return ncur;
609}
610
611static noinline void *
612array_realloc (int elem, void *base, int *cur, int cnt)
613{
614 *cur = array_nextsize (elem, *cur, cnt);
615 return ev_realloc (base, elem * *cur);
616}
617
618#define array_init_zero(base,count) \
619 memset ((void *)(base), 0, sizeof (*(base)) * (count))
349 620
350#define array_needsize(type,base,cur,cnt,init) \ 621#define array_needsize(type,base,cur,cnt,init) \
351 if (expect_false ((cnt) > cur)) \ 622 if (expect_false ((cnt) > (cur))) \
352 { \ 623 { \
353 int newcnt = cur; \ 624 int ocur_ = (cur); \
354 do \ 625 (base) = (type *)array_realloc \
355 { \ 626 (sizeof (type), (base), &(cur), (cnt)); \
356 newcnt = array_roundsize (type, newcnt << 1); \ 627 init ((base) + (ocur_), (cur) - ocur_); \
357 } \
358 while ((cnt) > newcnt); \
359 \
360 base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\
361 init (base + cur, newcnt - cur); \
362 cur = newcnt; \
363 } 628 }
364 629
630#if 0
365#define array_slim(type,stem) \ 631#define array_slim(type,stem) \
366 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 632 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
367 { \ 633 { \
368 stem ## max = array_roundsize (stem ## cnt >> 1); \ 634 stem ## max = array_roundsize (stem ## cnt >> 1); \
369 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\ 635 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
370 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 636 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
371 } 637 }
638#endif
372 639
373#define array_free(stem, idx) \ 640#define array_free(stem, idx) \
374 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 641 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
375 642
376/*****************************************************************************/ 643/*****************************************************************************/
377 644
378static void 645void noinline
379anfds_init (ANFD *base, int count)
380{
381 while (count--)
382 {
383 base->head = 0;
384 base->events = EV_NONE;
385 base->reify = 0;
386
387 ++base;
388 }
389}
390
391void
392ev_feed_event (EV_P_ void *w, int revents) 646ev_feed_event (EV_P_ void *w, int revents)
393{ 647{
394 W w_ = (W)w; 648 W w_ = (W)w;
649 int pri = ABSPRI (w_);
395 650
396 if (expect_false (w_->pending)) 651 if (expect_false (w_->pending))
652 pendings [pri][w_->pending - 1].events |= revents;
653 else
397 { 654 {
655 w_->pending = ++pendingcnt [pri];
656 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
657 pendings [pri][w_->pending - 1].w = w_;
398 pendings [ABSPRI (w_)][w_->pending - 1].events |= revents; 658 pendings [pri][w_->pending - 1].events = revents;
399 return;
400 } 659 }
401
402 w_->pending = ++pendingcnt [ABSPRI (w_)];
403 array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
404 pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
405 pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
406} 660}
407 661
408static void 662void inline_speed
409queue_events (EV_P_ W *events, int eventcnt, int type) 663queue_events (EV_P_ W *events, int eventcnt, int type)
410{ 664{
411 int i; 665 int i;
412 666
413 for (i = 0; i < eventcnt; ++i) 667 for (i = 0; i < eventcnt; ++i)
414 ev_feed_event (EV_A_ events [i], type); 668 ev_feed_event (EV_A_ events [i], type);
415} 669}
416 670
417inline void 671/*****************************************************************************/
672
673void inline_speed
418fd_event (EV_P_ int fd, int revents) 674fd_event (EV_P_ int fd, int revents)
419{ 675{
420 ANFD *anfd = anfds + fd; 676 ANFD *anfd = anfds + fd;
421 ev_io *w; 677 ev_io *w;
422 678
… …
430} 686}
431 687
432void 688void
433ev_feed_fd_event (EV_P_ int fd, int revents) 689ev_feed_fd_event (EV_P_ int fd, int revents)
434{ 690{
691 if (fd >= 0 && fd < anfdmax)
435 fd_event (EV_A_ fd, revents); 692 fd_event (EV_A_ fd, revents);
436} 693}
437 694
438/*****************************************************************************/ 695void inline_size
439
440inline void
441fd_reify (EV_P) 696fd_reify (EV_P)
442{ 697{
443 int i; 698 int i;
444 699
445 for (i = 0; i < fdchangecnt; ++i) 700 for (i = 0; i < fdchangecnt; ++i)
446 { 701 {
447 int fd = fdchanges [i]; 702 int fd = fdchanges [i];
448 ANFD *anfd = anfds + fd; 703 ANFD *anfd = anfds + fd;
449 ev_io *w; 704 ev_io *w;
450 705
451 int events = 0; 706 unsigned char events = 0;
452 707
453 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 708 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
454 events |= w->events; 709 events |= (unsigned char)w->events;
455 710
456#if EV_SELECT_IS_WINSOCKET 711#if EV_SELECT_IS_WINSOCKET
457 if (events) 712 if (events)
458 { 713 {
459 unsigned long argp; 714 unsigned long arg;
715 #ifdef EV_FD_TO_WIN32_HANDLE
716 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
717 #else
460 anfd->handle = _get_osfhandle (fd); 718 anfd->handle = _get_osfhandle (fd);
719 #endif
461 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0)); 720 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
462 } 721 }
463#endif 722#endif
464 723
724 {
725 unsigned char o_events = anfd->events;
726 unsigned char o_reify = anfd->reify;
727
465 anfd->reify = 0; 728 anfd->reify = 0;
466
467 backend_modify (EV_A_ fd, anfd->events, events);
468 anfd->events = events; 729 anfd->events = events;
730
731 if (o_events != events || o_reify & EV_IOFDSET)
732 backend_modify (EV_A_ fd, o_events, events);
733 }
469 } 734 }
470 735
471 fdchangecnt = 0; 736 fdchangecnt = 0;
472} 737}
473 738
474static void 739void inline_size
475fd_change (EV_P_ int fd) 740fd_change (EV_P_ int fd, int flags)
476{ 741{
477 if (expect_false (anfds [fd].reify)) 742 unsigned char reify = anfds [fd].reify;
478 return;
479
480 anfds [fd].reify = 1; 743 anfds [fd].reify |= flags;
481 744
745 if (expect_true (!reify))
746 {
482 ++fdchangecnt; 747 ++fdchangecnt;
483 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 748 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
484 fdchanges [fdchangecnt - 1] = fd; 749 fdchanges [fdchangecnt - 1] = fd;
750 }
485} 751}
486 752
487static void 753void inline_speed
488fd_kill (EV_P_ int fd) 754fd_kill (EV_P_ int fd)
489{ 755{
490 ev_io *w; 756 ev_io *w;
491 757
492 while ((w = (ev_io *)anfds [fd].head)) 758 while ((w = (ev_io *)anfds [fd].head))
… …
494 ev_io_stop (EV_A_ w); 760 ev_io_stop (EV_A_ w);
495 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 761 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
496 } 762 }
497} 763}
498 764
499inline int 765int inline_size
500fd_valid (int fd) 766fd_valid (int fd)
501{ 767{
502#ifdef _WIN32 768#ifdef _WIN32
503 return _get_osfhandle (fd) != -1; 769 return _get_osfhandle (fd) != -1;
504#else 770#else
505 return fcntl (fd, F_GETFD) != -1; 771 return fcntl (fd, F_GETFD) != -1;
506#endif 772#endif
507} 773}
508 774
509/* called on EBADF to verify fds */ 775/* called on EBADF to verify fds */
510static void 776static void noinline
511fd_ebadf (EV_P) 777fd_ebadf (EV_P)
512{ 778{
513 int fd; 779 int fd;
514 780
515 for (fd = 0; fd < anfdmax; ++fd) 781 for (fd = 0; fd < anfdmax; ++fd)
516 if (anfds [fd].events) 782 if (anfds [fd].events)
517 if (!fd_valid (fd) == -1 && errno == EBADF) 783 if (!fd_valid (fd) && errno == EBADF)
518 fd_kill (EV_A_ fd); 784 fd_kill (EV_A_ fd);
519} 785}
520 786
521/* called on ENOMEM in select/poll to kill some fds and retry */ 787/* called on ENOMEM in select/poll to kill some fds and retry */
522static void 788static void noinline
523fd_enomem (EV_P) 789fd_enomem (EV_P)
524{ 790{
525 int fd; 791 int fd;
526 792
527 for (fd = anfdmax; fd--; ) 793 for (fd = anfdmax; fd--; )
… …
531 return; 797 return;
532 } 798 }
533} 799}
534 800
535/* usually called after fork if backend needs to re-arm all fds from scratch */ 801/* usually called after fork if backend needs to re-arm all fds from scratch */
536static void 802static void noinline
537fd_rearm_all (EV_P) 803fd_rearm_all (EV_P)
538{ 804{
539 int fd; 805 int fd;
540 806
541 /* this should be highly optimised to not do anything but set a flag */
542 for (fd = 0; fd < anfdmax; ++fd) 807 for (fd = 0; fd < anfdmax; ++fd)
543 if (anfds [fd].events) 808 if (anfds [fd].events)
544 { 809 {
545 anfds [fd].events = 0; 810 anfds [fd].events = 0;
546 fd_change (EV_A_ fd); 811 fd_change (EV_A_ fd, EV_IOFDSET | 1);
547 } 812 }
548} 813}
549 814
550/*****************************************************************************/ 815/*****************************************************************************/
551 816
552static void 817/*
553upheap (WT *heap, int k) 818 * the heap functions want a real array index. array index 0 uis guaranteed to not
554{ 819 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
555 WT w = heap [k]; 820 * the branching factor of the d-tree.
821 */
556 822
557 while (k && heap [k >> 1]->at > w->at) 823/*
558 { 824 * at the moment we allow libev the luxury of two heaps,
559 heap [k] = heap [k >> 1]; 825 * a small-code-size 2-heap one and a ~1.5kb larger 4-heap
560 ((W)heap [k])->active = k + 1; 826 * which is more cache-efficient.
561 k >>= 1; 827 * the difference is about 5% with 50000+ watchers.
562 } 828 */
829#if EV_USE_4HEAP
563 830
564 heap [k] = w; 831#define DHEAP 4
565 ((W)heap [k])->active = k + 1; 832#define HEAP0 (DHEAP - 1) /* index of first element in heap */
833#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
834#define UPHEAP_DONE(p,k) ((p) == (k))
566 835
567} 836/* away from the root */
568 837void inline_speed
569static void
570downheap (WT *heap, int N, int k) 838downheap (ANHE *heap, int N, int k)
571{ 839{
572 WT w = heap [k]; 840 ANHE he = heap [k];
841 ANHE *E = heap + N + HEAP0;
573 842
574 while (k < (N >> 1)) 843 for (;;)
575 { 844 {
576 int j = k << 1; 845 ev_tstamp minat;
846 ANHE *minpos;
847 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
577 848
578 if (j + 1 < N && heap [j]->at > heap [j + 1]->at) 849 /* find minimum child */
850 if (expect_true (pos + DHEAP - 1 < E))
579 ++j; 851 {
580 852 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
581 if (w->at <= heap [j]->at) 853 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
854 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
855 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
856 }
857 else if (pos < E)
858 {
859 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
860 if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
861 if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
862 if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
863 }
864 else
582 break; 865 break;
583 866
867 if (ANHE_at (he) <= minat)
868 break;
869
870 heap [k] = *minpos;
871 ev_active (ANHE_w (*minpos)) = k;
872
873 k = minpos - heap;
874 }
875
876 heap [k] = he;
877 ev_active (ANHE_w (he)) = k;
878}
879
880#else /* 4HEAP */
881
882#define HEAP0 1
883#define HPARENT(k) ((k) >> 1)
884#define UPHEAP_DONE(p,k) (!(p))
885
886/* away from the root */
887void inline_speed
888downheap (ANHE *heap, int N, int k)
889{
890 ANHE he = heap [k];
891
892 for (;;)
893 {
894 int c = k << 1;
895
896 if (c > N + HEAP0 - 1)
897 break;
898
899 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
900 ? 1 : 0;
901
902 if (ANHE_at (he) <= ANHE_at (heap [c]))
903 break;
904
584 heap [k] = heap [j]; 905 heap [k] = heap [c];
585 ((W)heap [k])->active = k + 1; 906 ev_active (ANHE_w (heap [k])) = k;
907
586 k = j; 908 k = c;
587 } 909 }
588 910
589 heap [k] = w; 911 heap [k] = he;
590 ((W)heap [k])->active = k + 1; 912 ev_active (ANHE_w (he)) = k;
591} 913}
914#endif
592 915
593inline void 916/* towards the root */
917void inline_speed
918upheap (ANHE *heap, int k)
919{
920 ANHE he = heap [k];
921
922 for (;;)
923 {
924 int p = HPARENT (k);
925
926 if (UPHEAP_DONE (p, k) || ANHE_at (heap [p]) <= ANHE_at (he))
927 break;
928
929 heap [k] = heap [p];
930 ev_active (ANHE_w (heap [k])) = k;
931 k = p;
932 }
933
934 heap [k] = he;
935 ev_active (ANHE_w (he)) = k;
936}
937
938void inline_size
594adjustheap (WT *heap, int N, int k) 939adjustheap (ANHE *heap, int N, int k)
595{ 940{
941 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k]))
596 upheap (heap, k); 942 upheap (heap, k);
943 else
597 downheap (heap, N, k); 944 downheap (heap, N, k);
945}
946
947/* rebuild the heap: this function is used only once and executed rarely */
948void inline_size
949reheap (ANHE *heap, int N)
950{
951 int i;
952
953 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
954 /* also, this is easy to implement and correct for both 2-heaps and 4-heaps */
955 for (i = 0; i < N; ++i)
956 upheap (heap, i + HEAP0);
598} 957}
599 958
600/*****************************************************************************/ 959/*****************************************************************************/
601 960
602typedef struct 961typedef struct
603{ 962{
604 WL head; 963 WL head;
605 sig_atomic_t volatile gotsig; 964 EV_ATOMIC_T gotsig;
606} ANSIG; 965} ANSIG;
607 966
608static ANSIG *signals; 967static ANSIG *signals;
609static int signalmax; 968static int signalmax;
610 969
611static int sigpipe [2]; 970static EV_ATOMIC_T gotsig;
612static sig_atomic_t volatile gotsig;
613static ev_io sigev;
614 971
615static void 972/*****************************************************************************/
616signals_init (ANSIG *base, int count)
617{
618 while (count--)
619 {
620 base->head = 0;
621 base->gotsig = 0;
622 973
623 ++base; 974void inline_speed
624 }
625}
626
627static void
628sighandler (int signum)
629{
630#if _WIN32
631 signal (signum, sighandler);
632#endif
633
634 signals [signum - 1].gotsig = 1;
635
636 if (!gotsig)
637 {
638 int old_errno = errno;
639 gotsig = 1;
640 write (sigpipe [1], &signum, 1);
641 errno = old_errno;
642 }
643}
644
645void
646ev_feed_signal_event (EV_P_ int signum)
647{
648 WL w;
649
650#if EV_MULTIPLICITY
651 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
652#endif
653
654 --signum;
655
656 if (signum < 0 || signum >= signalmax)
657 return;
658
659 signals [signum].gotsig = 0;
660
661 for (w = signals [signum].head; w; w = w->next)
662 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
663}
664
665static void
666sigcb (EV_P_ ev_io *iow, int revents)
667{
668 int signum;
669
670 read (sigpipe [0], &revents, 1);
671 gotsig = 0;
672
673 for (signum = signalmax; signum--; )
674 if (signals [signum].gotsig)
675 ev_feed_signal_event (EV_A_ signum + 1);
676}
677
678static void
679fd_intern (int fd) 975fd_intern (int fd)
680{ 976{
681#ifdef _WIN32 977#ifdef _WIN32
682 int arg = 1; 978 unsigned long arg = 1;
683 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); 979 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
684#else 980#else
685 fcntl (fd, F_SETFD, FD_CLOEXEC); 981 fcntl (fd, F_SETFD, FD_CLOEXEC);
686 fcntl (fd, F_SETFL, O_NONBLOCK); 982 fcntl (fd, F_SETFL, O_NONBLOCK);
687#endif 983#endif
688} 984}
689 985
986static void noinline
987evpipe_init (EV_P)
988{
989 if (!ev_is_active (&pipeev))
990 {
991#if EV_USE_EVENTFD
992 if ((evfd = eventfd (0, 0)) >= 0)
993 {
994 evpipe [0] = -1;
995 fd_intern (evfd);
996 ev_io_set (&pipeev, evfd, EV_READ);
997 }
998 else
999#endif
1000 {
1001 while (pipe (evpipe))
1002 syserr ("(libev) error creating signal/async pipe");
1003
1004 fd_intern (evpipe [0]);
1005 fd_intern (evpipe [1]);
1006 ev_io_set (&pipeev, evpipe [0], EV_READ);
1007 }
1008
1009 ev_io_start (EV_A_ &pipeev);
1010 ev_unref (EV_A); /* watcher should not keep loop alive */
1011 }
1012}
1013
1014void inline_size
1015evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1016{
1017 if (!*flag)
1018 {
1019 int old_errno = errno; /* save errno because write might clobber it */
1020
1021 *flag = 1;
1022
1023#if EV_USE_EVENTFD
1024 if (evfd >= 0)
1025 {
1026 uint64_t counter = 1;
1027 write (evfd, &counter, sizeof (uint64_t));
1028 }
1029 else
1030#endif
1031 write (evpipe [1], &old_errno, 1);
1032
1033 errno = old_errno;
1034 }
1035}
1036
690static void 1037static void
691siginit (EV_P) 1038pipecb (EV_P_ ev_io *iow, int revents)
692{ 1039{
693 fd_intern (sigpipe [0]); 1040#if EV_USE_EVENTFD
694 fd_intern (sigpipe [1]); 1041 if (evfd >= 0)
1042 {
1043 uint64_t counter;
1044 read (evfd, &counter, sizeof (uint64_t));
1045 }
1046 else
1047#endif
1048 {
1049 char dummy;
1050 read (evpipe [0], &dummy, 1);
1051 }
695 1052
696 ev_io_set (&sigev, sigpipe [0], EV_READ); 1053 if (gotsig && ev_is_default_loop (EV_A))
697 ev_io_start (EV_A_ &sigev); 1054 {
698 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1055 int signum;
1056 gotsig = 0;
1057
1058 for (signum = signalmax; signum--; )
1059 if (signals [signum].gotsig)
1060 ev_feed_signal_event (EV_A_ signum + 1);
1061 }
1062
1063#if EV_ASYNC_ENABLE
1064 if (gotasync)
1065 {
1066 int i;
1067 gotasync = 0;
1068
1069 for (i = asynccnt; i--; )
1070 if (asyncs [i]->sent)
1071 {
1072 asyncs [i]->sent = 0;
1073 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1074 }
1075 }
1076#endif
699} 1077}
700 1078
701/*****************************************************************************/ 1079/*****************************************************************************/
702 1080
1081static void
1082ev_sighandler (int signum)
1083{
1084#if EV_MULTIPLICITY
1085 struct ev_loop *loop = &default_loop_struct;
1086#endif
1087
1088#if _WIN32
1089 signal (signum, ev_sighandler);
1090#endif
1091
1092 signals [signum - 1].gotsig = 1;
1093 evpipe_write (EV_A_ &gotsig);
1094}
1095
1096void noinline
1097ev_feed_signal_event (EV_P_ int signum)
1098{
1099 WL w;
1100
1101#if EV_MULTIPLICITY
1102 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
1103#endif
1104
1105 --signum;
1106
1107 if (signum < 0 || signum >= signalmax)
1108 return;
1109
1110 signals [signum].gotsig = 0;
1111
1112 for (w = signals [signum].head; w; w = w->next)
1113 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1114}
1115
1116/*****************************************************************************/
1117
703static ev_child *childs [PID_HASHSIZE]; 1118static WL childs [EV_PID_HASHSIZE];
704 1119
705#ifndef _WIN32 1120#ifndef _WIN32
706 1121
707static ev_signal childev; 1122static ev_signal childev;
1123
1124#ifndef WIFCONTINUED
1125# define WIFCONTINUED(status) 0
1126#endif
1127
1128void inline_speed
1129child_reap (EV_P_ int chain, int pid, int status)
1130{
1131 ev_child *w;
1132 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1133
1134 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
1135 {
1136 if ((w->pid == pid || !w->pid)
1137 && (!traced || (w->flags & 1)))
1138 {
1139 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
1140 w->rpid = pid;
1141 w->rstatus = status;
1142 ev_feed_event (EV_A_ (W)w, EV_CHILD);
1143 }
1144 }
1145}
708 1146
709#ifndef WCONTINUED 1147#ifndef WCONTINUED
710# define WCONTINUED 0 1148# define WCONTINUED 0
711#endif 1149#endif
712 1150
713static void 1151static void
714child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
715{
716 ev_child *w;
717
718 for (w = (ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
719 if (w->pid == pid || !w->pid)
720 {
721 ev_priority (w) = ev_priority (sw); /* need to do it *now* */
722 w->rpid = pid;
723 w->rstatus = status;
724 ev_feed_event (EV_A_ (W)w, EV_CHILD);
725 }
726}
727
728static void
729childcb (EV_P_ ev_signal *sw, int revents) 1152childcb (EV_P_ ev_signal *sw, int revents)
730{ 1153{
731 int pid, status; 1154 int pid, status;
732 1155
1156 /* some systems define WCONTINUED but then fail to support it (linux 2.4) */
733 if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) 1157 if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
734 { 1158 if (!WCONTINUED
1159 || errno != EINVAL
1160 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
1161 return;
1162
735 /* make sure we are called again until all childs have been reaped */ 1163 /* make sure we are called again until all children have been reaped */
736 /* we need to do it this way so that the callback gets called before we continue */ 1164 /* we need to do it this way so that the callback gets called before we continue */
737 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 1165 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
738 1166
739 child_reap (EV_A_ sw, pid, pid, status); 1167 child_reap (EV_A_ pid, pid, status);
1168 if (EV_PID_HASHSIZE > 1)
740 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 1169 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
741 }
742} 1170}
743 1171
744#endif 1172#endif
745 1173
746/*****************************************************************************/ 1174/*****************************************************************************/
… …
772{ 1200{
773 return EV_VERSION_MINOR; 1201 return EV_VERSION_MINOR;
774} 1202}
775 1203
776/* return true if we are running with elevated privileges and should ignore env variables */ 1204/* return true if we are running with elevated privileges and should ignore env variables */
777static int 1205int inline_size
778enable_secure (void) 1206enable_secure (void)
779{ 1207{
780#ifdef _WIN32 1208#ifdef _WIN32
781 return 0; 1209 return 0;
782#else 1210#else
… …
818} 1246}
819 1247
820unsigned int 1248unsigned int
821ev_embeddable_backends (void) 1249ev_embeddable_backends (void)
822{ 1250{
823 return EVBACKEND_EPOLL 1251 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
824 | EVBACKEND_KQUEUE 1252
825 | EVBACKEND_PORT; 1253 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1254 /* please fix it and tell me how to detect the fix */
1255 flags &= ~EVBACKEND_EPOLL;
1256
1257 return flags;
826} 1258}
827 1259
828unsigned int 1260unsigned int
829ev_backend (EV_P) 1261ev_backend (EV_P)
830{ 1262{
831 return backend; 1263 return backend;
832} 1264}
833 1265
834static void 1266unsigned int
1267ev_loop_count (EV_P)
1268{
1269 return loop_count;
1270}
1271
1272void
1273ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1274{
1275 io_blocktime = interval;
1276}
1277
1278void
1279ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1280{
1281 timeout_blocktime = interval;
1282}
1283
1284static void noinline
835loop_init (EV_P_ unsigned int flags) 1285loop_init (EV_P_ unsigned int flags)
836{ 1286{
837 if (!backend) 1287 if (!backend)
838 { 1288 {
839#if EV_USE_MONOTONIC 1289#if EV_USE_MONOTONIC
… …
842 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1292 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
843 have_monotonic = 1; 1293 have_monotonic = 1;
844 } 1294 }
845#endif 1295#endif
846 1296
847 ev_rt_now = ev_time (); 1297 ev_rt_now = ev_time ();
848 mn_now = get_clock (); 1298 mn_now = get_clock ();
849 now_floor = mn_now; 1299 now_floor = mn_now;
850 rtmn_diff = ev_rt_now - mn_now; 1300 rtmn_diff = ev_rt_now - mn_now;
1301
1302 io_blocktime = 0.;
1303 timeout_blocktime = 0.;
1304 backend = 0;
1305 backend_fd = -1;
1306 gotasync = 0;
1307#if EV_USE_INOTIFY
1308 fs_fd = -2;
1309#endif
1310
1311 /* pid check not overridable via env */
1312#ifndef _WIN32
1313 if (flags & EVFLAG_FORKCHECK)
1314 curpid = getpid ();
1315#endif
851 1316
852 if (!(flags & EVFLAG_NOENV) 1317 if (!(flags & EVFLAG_NOENV)
853 && !enable_secure () 1318 && !enable_secure ()
854 && getenv ("LIBEV_FLAGS")) 1319 && getenv ("LIBEV_FLAGS"))
855 flags = atoi (getenv ("LIBEV_FLAGS")); 1320 flags = atoi (getenv ("LIBEV_FLAGS"));
856 1321
857 if (!(flags & 0x0000ffffUL)) 1322 if (!(flags & 0x0000ffffU))
858 flags |= ev_recommended_backends (); 1323 flags |= ev_recommended_backends ();
859 1324
860 backend = 0;
861#if EV_USE_PORT 1325#if EV_USE_PORT
862 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 1326 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
863#endif 1327#endif
864#if EV_USE_KQUEUE 1328#if EV_USE_KQUEUE
865 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 1329 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
872#endif 1336#endif
873#if EV_USE_SELECT 1337#if EV_USE_SELECT
874 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1338 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
875#endif 1339#endif
876 1340
877 ev_init (&sigev, sigcb); 1341 ev_init (&pipeev, pipecb);
878 ev_set_priority (&sigev, EV_MAXPRI); 1342 ev_set_priority (&pipeev, EV_MAXPRI);
879 } 1343 }
880} 1344}
881 1345
882static void 1346static void noinline
883loop_destroy (EV_P) 1347loop_destroy (EV_P)
884{ 1348{
885 int i; 1349 int i;
1350
1351 if (ev_is_active (&pipeev))
1352 {
1353 ev_ref (EV_A); /* signal watcher */
1354 ev_io_stop (EV_A_ &pipeev);
1355
1356#if EV_USE_EVENTFD
1357 if (evfd >= 0)
1358 close (evfd);
1359#endif
1360
1361 if (evpipe [0] >= 0)
1362 {
1363 close (evpipe [0]);
1364 close (evpipe [1]);
1365 }
1366 }
1367
1368#if EV_USE_INOTIFY
1369 if (fs_fd >= 0)
1370 close (fs_fd);
1371#endif
1372
1373 if (backend_fd >= 0)
1374 close (backend_fd);
886 1375
887#if EV_USE_PORT 1376#if EV_USE_PORT
888 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 1377 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
889#endif 1378#endif
890#if EV_USE_KQUEUE 1379#if EV_USE_KQUEUE
… …
899#if EV_USE_SELECT 1388#if EV_USE_SELECT
900 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 1389 if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
901#endif 1390#endif
902 1391
903 for (i = NUMPRI; i--; ) 1392 for (i = NUMPRI; i--; )
1393 {
904 array_free (pending, [i]); 1394 array_free (pending, [i]);
1395#if EV_IDLE_ENABLE
1396 array_free (idle, [i]);
1397#endif
1398 }
1399
1400 ev_free (anfds); anfdmax = 0;
905 1401
906 /* have to use the microsoft-never-gets-it-right macro */ 1402 /* have to use the microsoft-never-gets-it-right macro */
907 array_free (fdchange, EMPTY0); 1403 array_free (fdchange, EMPTY);
908 array_free (timer, EMPTY0); 1404 array_free (timer, EMPTY);
909#if EV_PERIODICS 1405#if EV_PERIODIC_ENABLE
910 array_free (periodic, EMPTY0); 1406 array_free (periodic, EMPTY);
911#endif 1407#endif
1408#if EV_FORK_ENABLE
912 array_free (idle, EMPTY0); 1409 array_free (fork, EMPTY);
1410#endif
913 array_free (prepare, EMPTY0); 1411 array_free (prepare, EMPTY);
914 array_free (check, EMPTY0); 1412 array_free (check, EMPTY);
1413#if EV_ASYNC_ENABLE
1414 array_free (async, EMPTY);
1415#endif
915 1416
916 backend = 0; 1417 backend = 0;
917} 1418}
918 1419
919static void 1420#if EV_USE_INOTIFY
1421void inline_size infy_fork (EV_P);
1422#endif
1423
1424void inline_size
920loop_fork (EV_P) 1425loop_fork (EV_P)
921{ 1426{
922#if EV_USE_PORT 1427#if EV_USE_PORT
923 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 1428 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
924#endif 1429#endif
… …
926 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); 1431 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
927#endif 1432#endif
928#if EV_USE_EPOLL 1433#if EV_USE_EPOLL
929 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 1434 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
930#endif 1435#endif
1436#if EV_USE_INOTIFY
1437 infy_fork (EV_A);
1438#endif
931 1439
932 if (ev_is_active (&sigev)) 1440 if (ev_is_active (&pipeev))
933 { 1441 {
934 /* default loop */ 1442 /* this "locks" the handlers against writing to the pipe */
1443 /* while we modify the fd vars */
1444 gotsig = 1;
1445#if EV_ASYNC_ENABLE
1446 gotasync = 1;
1447#endif
935 1448
936 ev_ref (EV_A); 1449 ev_ref (EV_A);
937 ev_io_stop (EV_A_ &sigev); 1450 ev_io_stop (EV_A_ &pipeev);
1451
1452#if EV_USE_EVENTFD
1453 if (evfd >= 0)
1454 close (evfd);
1455#endif
1456
1457 if (evpipe [0] >= 0)
1458 {
938 close (sigpipe [0]); 1459 close (evpipe [0]);
939 close (sigpipe [1]); 1460 close (evpipe [1]);
1461 }
940 1462
941 while (pipe (sigpipe))
942 syserr ("(libev) error creating pipe");
943
944 siginit (EV_A); 1463 evpipe_init (EV_A);
1464 /* now iterate over everything, in case we missed something */
1465 pipecb (EV_A_ &pipeev, EV_READ);
945 } 1466 }
946 1467
947 postfork = 0; 1468 postfork = 0;
948} 1469}
949 1470
950#if EV_MULTIPLICITY 1471#if EV_MULTIPLICITY
1472
951struct ev_loop * 1473struct ev_loop *
952ev_loop_new (unsigned int flags) 1474ev_loop_new (unsigned int flags)
953{ 1475{
954 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 1476 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
955 1477
… …
971} 1493}
972 1494
973void 1495void
974ev_loop_fork (EV_P) 1496ev_loop_fork (EV_P)
975{ 1497{
976 postfork = 1; 1498 postfork = 1; /* must be in line with ev_default_fork */
977} 1499}
978 1500
1501#if EV_VERIFY
1502static void noinline
1503verify_watcher (EV_P_ W w)
1504{
1505 assert (("watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1506
1507 if (w->pending)
1508 assert (("pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1509}
1510
1511static void noinline
1512verify_heap (EV_P_ ANHE *heap, int N)
1513{
1514 int i;
1515
1516 for (i = HEAP0; i < N + HEAP0; ++i)
1517 {
1518 assert (("active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
1519 assert (("heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
1520 assert (("heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
1521
1522 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1523 }
1524}
1525
1526static void noinline
1527array_verify (EV_P_ W *ws, int cnt)
1528{
1529 while (cnt--)
1530 {
1531 assert (("active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1532 verify_watcher (EV_A_ ws [cnt]);
1533 }
1534}
1535#endif
1536
1537void
1538ev_loop_verify (EV_P)
1539{
1540#if EV_VERIFY
1541 int i;
1542 WL w;
1543
1544 assert (activecnt >= -1);
1545
1546 assert (fdchangemax >= fdchangecnt);
1547 for (i = 0; i < fdchangecnt; ++i)
1548 assert (("negative fd in fdchanges", fdchanges [i] >= 0));
1549
1550 assert (anfdmax >= 0);
1551 for (i = 0; i < anfdmax; ++i)
1552 for (w = anfds [i].head; w; w = w->next)
1553 {
1554 verify_watcher (EV_A_ (W)w);
1555 assert (("inactive fd watcher on anfd list", ev_active (w) == 1));
1556 assert (("fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1557 }
1558
1559 assert (timermax >= timercnt);
1560 verify_heap (EV_A_ timers, timercnt);
1561
1562#if EV_PERIODIC_ENABLE
1563 assert (periodicmax >= periodiccnt);
1564 verify_heap (EV_A_ periodics, periodiccnt);
1565#endif
1566
1567 for (i = NUMPRI; i--; )
1568 {
1569 assert (pendingmax [i] >= pendingcnt [i]);
1570#if EV_IDLE_ENABLE
1571 assert (idleall >= 0);
1572 assert (idlemax [i] >= idlecnt [i]);
1573 array_verify (EV_A_ (W *)idles [i], idlecnt [i]);
1574#endif
1575 }
1576
1577#if EV_FORK_ENABLE
1578 assert (forkmax >= forkcnt);
1579 array_verify (EV_A_ (W *)forks, forkcnt);
1580#endif
1581
1582#if EV_ASYNC_ENABLE
1583 assert (asyncmax >= asynccnt);
1584 array_verify (EV_A_ (W *)asyncs, asynccnt);
1585#endif
1586
1587 assert (preparemax >= preparecnt);
1588 array_verify (EV_A_ (W *)prepares, preparecnt);
1589
1590 assert (checkmax >= checkcnt);
1591 array_verify (EV_A_ (W *)checks, checkcnt);
1592
1593# if 0
1594 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
1595 for (signum = signalmax; signum--; ) if (signals [signum].gotsig)
979#endif 1596# endif
1597#endif
1598}
1599
1600#endif /* multiplicity */
980 1601
981#if EV_MULTIPLICITY 1602#if EV_MULTIPLICITY
982struct ev_loop * 1603struct ev_loop *
983ev_default_loop_init (unsigned int flags) 1604ev_default_loop_init (unsigned int flags)
984#else 1605#else
985int 1606int
986ev_default_loop (unsigned int flags) 1607ev_default_loop (unsigned int flags)
987#endif 1608#endif
988{ 1609{
989 if (sigpipe [0] == sigpipe [1])
990 if (pipe (sigpipe))
991 return 0;
992
993 if (!ev_default_loop_ptr) 1610 if (!ev_default_loop_ptr)
994 { 1611 {
995#if EV_MULTIPLICITY 1612#if EV_MULTIPLICITY
996 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 1613 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
997#else 1614#else
… …
1000 1617
1001 loop_init (EV_A_ flags); 1618 loop_init (EV_A_ flags);
1002 1619
1003 if (ev_backend (EV_A)) 1620 if (ev_backend (EV_A))
1004 { 1621 {
1005 siginit (EV_A);
1006
1007#ifndef _WIN32 1622#ifndef _WIN32
1008 ev_signal_init (&childev, childcb, SIGCHLD); 1623 ev_signal_init (&childev, childcb, SIGCHLD);
1009 ev_set_priority (&childev, EV_MAXPRI); 1624 ev_set_priority (&childev, EV_MAXPRI);
1010 ev_signal_start (EV_A_ &childev); 1625 ev_signal_start (EV_A_ &childev);
1011 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1626 ev_unref (EV_A); /* child watcher should not keep loop alive */
… …
1028#ifndef _WIN32 1643#ifndef _WIN32
1029 ev_ref (EV_A); /* child watcher */ 1644 ev_ref (EV_A); /* child watcher */
1030 ev_signal_stop (EV_A_ &childev); 1645 ev_signal_stop (EV_A_ &childev);
1031#endif 1646#endif
1032 1647
1033 ev_ref (EV_A); /* signal watcher */
1034 ev_io_stop (EV_A_ &sigev);
1035
1036 close (sigpipe [0]); sigpipe [0] = 0;
1037 close (sigpipe [1]); sigpipe [1] = 0;
1038
1039 loop_destroy (EV_A); 1648 loop_destroy (EV_A);
1040} 1649}
1041 1650
1042void 1651void
1043ev_default_fork (void) 1652ev_default_fork (void)
… …
1045#if EV_MULTIPLICITY 1654#if EV_MULTIPLICITY
1046 struct ev_loop *loop = ev_default_loop_ptr; 1655 struct ev_loop *loop = ev_default_loop_ptr;
1047#endif 1656#endif
1048 1657
1049 if (backend) 1658 if (backend)
1050 postfork = 1; 1659 postfork = 1; /* must be in line with ev_loop_fork */
1051} 1660}
1052 1661
1053/*****************************************************************************/ 1662/*****************************************************************************/
1054 1663
1055static int 1664void
1056any_pending (EV_P) 1665ev_invoke (EV_P_ void *w, int revents)
1057{ 1666{
1058 int pri; 1667 EV_CB_INVOKE ((W)w, revents);
1059
1060 for (pri = NUMPRI; pri--; )
1061 if (pendingcnt [pri])
1062 return 1;
1063
1064 return 0;
1065} 1668}
1066 1669
1067inline void 1670void inline_speed
1068call_pending (EV_P) 1671call_pending (EV_P)
1069{ 1672{
1070 int pri; 1673 int pri;
1071 1674
1072 for (pri = NUMPRI; pri--; ) 1675 for (pri = NUMPRI; pri--; )
… …
1074 { 1677 {
1075 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 1678 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1076 1679
1077 if (expect_true (p->w)) 1680 if (expect_true (p->w))
1078 { 1681 {
1079 assert (("non-pending watcher on pending list", p->w->pending)); 1682 /*assert (("non-pending watcher on pending list", p->w->pending));*/
1080 1683
1081 p->w->pending = 0; 1684 p->w->pending = 0;
1082 EV_CB_INVOKE (p->w, p->events); 1685 EV_CB_INVOKE (p->w, p->events);
1686 EV_FREQUENT_CHECK;
1083 } 1687 }
1084 } 1688 }
1085} 1689}
1086 1690
1087inline void 1691#if EV_IDLE_ENABLE
1692void inline_size
1693idle_reify (EV_P)
1694{
1695 if (expect_false (idleall))
1696 {
1697 int pri;
1698
1699 for (pri = NUMPRI; pri--; )
1700 {
1701 if (pendingcnt [pri])
1702 break;
1703
1704 if (idlecnt [pri])
1705 {
1706 queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
1707 break;
1708 }
1709 }
1710 }
1711}
1712#endif
1713
1714void inline_size
1088timers_reify (EV_P) 1715timers_reify (EV_P)
1089{ 1716{
1717 EV_FREQUENT_CHECK;
1718
1090 while (timercnt && ((WT)timers [0])->at <= mn_now) 1719 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1091 { 1720 {
1092 ev_timer *w = timers [0]; 1721 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
1093 1722
1094 assert (("inactive timer on timer heap detected", ev_is_active (w))); 1723 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1095 1724
1096 /* first reschedule or stop timer */ 1725 /* first reschedule or stop timer */
1097 if (w->repeat) 1726 if (w->repeat)
1098 { 1727 {
1728 ev_at (w) += w->repeat;
1729 if (ev_at (w) < mn_now)
1730 ev_at (w) = mn_now;
1731
1099 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 1732 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1100 1733
1101 ((WT)w)->at += w->repeat; 1734 ANHE_at_cache (timers [HEAP0]);
1102 if (((WT)w)->at < mn_now)
1103 ((WT)w)->at = mn_now;
1104
1105 downheap ((WT *)timers, timercnt, 0); 1735 downheap (timers, timercnt, HEAP0);
1106 } 1736 }
1107 else 1737 else
1108 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ 1738 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1109 1739
1740 EV_FREQUENT_CHECK;
1110 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); 1741 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1111 } 1742 }
1112} 1743}
1113 1744
1114#if EV_PERIODICS 1745#if EV_PERIODIC_ENABLE
1115inline void 1746void inline_size
1116periodics_reify (EV_P) 1747periodics_reify (EV_P)
1117{ 1748{
1749 EV_FREQUENT_CHECK;
1750
1118 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now) 1751 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1119 { 1752 {
1120 ev_periodic *w = periodics [0]; 1753 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
1121 1754
1122 assert (("inactive timer on periodic heap detected", ev_is_active (w))); 1755 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1123 1756
1124 /* first reschedule or stop timer */ 1757 /* first reschedule or stop timer */
1125 if (w->reschedule_cb) 1758 if (w->reschedule_cb)
1126 { 1759 {
1127 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001); 1760 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1761
1128 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now)); 1762 assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
1763
1764 ANHE_at_cache (periodics [HEAP0]);
1129 downheap ((WT *)periodics, periodiccnt, 0); 1765 downheap (periodics, periodiccnt, HEAP0);
1130 } 1766 }
1131 else if (w->interval) 1767 else if (w->interval)
1132 { 1768 {
1133 ((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval; 1769 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1134 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now)); 1770 /* if next trigger time is not sufficiently in the future, put it there */
1771 /* this might happen because of floating point inexactness */
1772 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1773 {
1774 ev_at (w) += w->interval;
1775
1776 /* if interval is unreasonably low we might still have a time in the past */
1777 /* so correct this. this will make the periodic very inexact, but the user */
1778 /* has effectively asked to get triggered more often than possible */
1779 if (ev_at (w) < ev_rt_now)
1780 ev_at (w) = ev_rt_now;
1781 }
1782
1783 ANHE_at_cache (periodics [HEAP0]);
1135 downheap ((WT *)periodics, periodiccnt, 0); 1784 downheap (periodics, periodiccnt, HEAP0);
1136 } 1785 }
1137 else 1786 else
1138 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 1787 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1139 1788
1789 EV_FREQUENT_CHECK;
1140 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 1790 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1141 } 1791 }
1142} 1792}
1143 1793
1144static void 1794static void noinline
1145periodics_reschedule (EV_P) 1795periodics_reschedule (EV_P)
1146{ 1796{
1147 int i; 1797 int i;
1148 1798
1149 /* adjust periodics after time jump */ 1799 /* adjust periodics after time jump */
1150 for (i = 0; i < periodiccnt; ++i) 1800 for (i = HEAP0; i < periodiccnt + HEAP0; ++i)
1151 { 1801 {
1152 ev_periodic *w = periodics [i]; 1802 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1153 1803
1154 if (w->reschedule_cb) 1804 if (w->reschedule_cb)
1155 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 1805 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1156 else if (w->interval) 1806 else if (w->interval)
1157 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval; 1807 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1808
1809 ANHE_at_cache (periodics [i]);
1810 }
1811
1812 reheap (periodics, periodiccnt);
1813}
1814#endif
1815
1816void inline_speed
1817time_update (EV_P_ ev_tstamp max_block)
1818{
1819 int i;
1820
1821#if EV_USE_MONOTONIC
1822 if (expect_true (have_monotonic))
1158 } 1823 {
1824 ev_tstamp odiff = rtmn_diff;
1159 1825
1160 /* now rebuild the heap */
1161 for (i = periodiccnt >> 1; i--; )
1162 downheap ((WT *)periodics, periodiccnt, i);
1163}
1164#endif
1165
1166inline int
1167time_update_monotonic (EV_P)
1168{
1169 mn_now = get_clock (); 1826 mn_now = get_clock ();
1170 1827
1828 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
1829 /* interpolate in the meantime */
1171 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 1830 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1172 { 1831 {
1173 ev_rt_now = rtmn_diff + mn_now; 1832 ev_rt_now = rtmn_diff + mn_now;
1174 return 0; 1833 return;
1175 } 1834 }
1176 else 1835
1177 {
1178 now_floor = mn_now; 1836 now_floor = mn_now;
1179 ev_rt_now = ev_time (); 1837 ev_rt_now = ev_time ();
1180 return 1;
1181 }
1182}
1183 1838
1184inline void 1839 /* loop a few times, before making important decisions.
1185time_update (EV_P) 1840 * on the choice of "4": one iteration isn't enough,
1186{ 1841 * in case we get preempted during the calls to
1187 int i; 1842 * ev_time and get_clock. a second call is almost guaranteed
1188 1843 * to succeed in that case, though. and looping a few more times
1189#if EV_USE_MONOTONIC 1844 * doesn't hurt either as we only do this on time-jumps or
1190 if (expect_true (have_monotonic)) 1845 * in the unlikely event of having been preempted here.
1191 { 1846 */
1192 if (time_update_monotonic (EV_A)) 1847 for (i = 4; --i; )
1193 { 1848 {
1194 ev_tstamp odiff = rtmn_diff; 1849 rtmn_diff = ev_rt_now - mn_now;
1195 1850
1196 /* loop a few times, before making important decisions. 1851 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP))
1197 * on the choice of "4": one iteration isn't enough, 1852 return; /* all is well */
1198 * in case we get preempted during the calls to 1853
1199 * ev_time and get_clock. a second call is almost guarenteed 1854 ev_rt_now = ev_time ();
1200 * to succeed in that case, though. and looping a few more times 1855 mn_now = get_clock ();
1201 * doesn't hurt either as we only do this on time-jumps or 1856 now_floor = mn_now;
1202 * in the unlikely event of getting preempted here. 1857 }
1203 */ 1858
1204 for (i = 4; --i; ) 1859# if EV_PERIODIC_ENABLE
1860 periodics_reschedule (EV_A);
1861# endif
1862 /* no timer adjustment, as the monotonic clock doesn't jump */
1863 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1864 }
1865 else
1866#endif
1867 {
1868 ev_rt_now = ev_time ();
1869
1870 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1871 {
1872#if EV_PERIODIC_ENABLE
1873 periodics_reschedule (EV_A);
1874#endif
1875 /* adjust timers. this is easy, as the offset is the same for all of them */
1876 for (i = 0; i < timercnt; ++i)
1205 { 1877 {
1206 rtmn_diff = ev_rt_now - mn_now; 1878 ANHE *he = timers + i + HEAP0;
1207 1879 ANHE_w (*he)->at += ev_rt_now - mn_now;
1208 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) 1880 ANHE_at_cache (*he);
1209 return; /* all is well */
1210
1211 ev_rt_now = ev_time ();
1212 mn_now = get_clock ();
1213 now_floor = mn_now;
1214 } 1881 }
1215
1216# if EV_PERIODICS
1217 periodics_reschedule (EV_A);
1218# endif
1219 /* no timer adjustment, as the monotonic clock doesn't jump */
1220 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1221 } 1882 }
1222 }
1223 else
1224#endif
1225 {
1226 ev_rt_now = ev_time ();
1227
1228 if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
1229 {
1230#if EV_PERIODICS
1231 periodics_reschedule (EV_A);
1232#endif
1233
1234 /* adjust timers. this is easy, as the offset is the same for all */
1235 for (i = 0; i < timercnt; ++i)
1236 ((WT)timers [i])->at += ev_rt_now - mn_now;
1237 }
1238 1883
1239 mn_now = ev_rt_now; 1884 mn_now = ev_rt_now;
1240 } 1885 }
1241} 1886}
1242 1887
… …
1250ev_unref (EV_P) 1895ev_unref (EV_P)
1251{ 1896{
1252 --activecnt; 1897 --activecnt;
1253} 1898}
1254 1899
1900void
1901ev_now_update (EV_P)
1902{
1903 time_update (EV_A_ 1e100);
1904}
1905
1255static int loop_done; 1906static int loop_done;
1256 1907
1257void 1908void
1258ev_loop (EV_P_ int flags) 1909ev_loop (EV_P_ int flags)
1259{ 1910{
1260 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) 1911 loop_done = EVUNLOOP_CANCEL;
1261 ? EVUNLOOP_ONE
1262 : EVUNLOOP_CANCEL;
1263 1912
1264 while (activecnt) 1913 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
1914
1915 do
1265 { 1916 {
1917#if EV_VERIFY >= 2
1918 ev_loop_verify (EV_A);
1919#endif
1920
1921#ifndef _WIN32
1922 if (expect_false (curpid)) /* penalise the forking check even more */
1923 if (expect_false (getpid () != curpid))
1924 {
1925 curpid = getpid ();
1926 postfork = 1;
1927 }
1928#endif
1929
1930#if EV_FORK_ENABLE
1931 /* we might have forked, so queue fork handlers */
1932 if (expect_false (postfork))
1933 if (forkcnt)
1934 {
1935 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1936 call_pending (EV_A);
1937 }
1938#endif
1939
1266 /* queue check watchers (and execute them) */ 1940 /* queue prepare watchers (and execute them) */
1267 if (expect_false (preparecnt)) 1941 if (expect_false (preparecnt))
1268 { 1942 {
1269 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 1943 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1270 call_pending (EV_A); 1944 call_pending (EV_A);
1271 } 1945 }
1272 1946
1947 if (expect_false (!activecnt))
1948 break;
1949
1273 /* we might have forked, so reify kernel state if necessary */ 1950 /* we might have forked, so reify kernel state if necessary */
1274 if (expect_false (postfork)) 1951 if (expect_false (postfork))
1275 loop_fork (EV_A); 1952 loop_fork (EV_A);
1276 1953
1277 /* update fd-related kernel structures */ 1954 /* update fd-related kernel structures */
1278 fd_reify (EV_A); 1955 fd_reify (EV_A);
1279 1956
1280 /* calculate blocking time */ 1957 /* calculate blocking time */
1281 { 1958 {
1282 double block; 1959 ev_tstamp waittime = 0.;
1960 ev_tstamp sleeptime = 0.;
1283 1961
1284 if (flags & EVLOOP_NONBLOCK || idlecnt) 1962 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1285 block = 0.; /* do not block at all */
1286 else
1287 { 1963 {
1288 /* update time to cancel out callback processing overhead */ 1964 /* update time to cancel out callback processing overhead */
1289#if EV_USE_MONOTONIC
1290 if (expect_true (have_monotonic))
1291 time_update_monotonic (EV_A); 1965 time_update (EV_A_ 1e100);
1292 else
1293#endif
1294 {
1295 ev_rt_now = ev_time ();
1296 mn_now = ev_rt_now;
1297 }
1298 1966
1299 block = MAX_BLOCKTIME; 1967 waittime = MAX_BLOCKTIME;
1300 1968
1301 if (timercnt) 1969 if (timercnt)
1302 { 1970 {
1303 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge; 1971 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
1304 if (block > to) block = to; 1972 if (waittime > to) waittime = to;
1305 } 1973 }
1306 1974
1307#if EV_PERIODICS 1975#if EV_PERIODIC_ENABLE
1308 if (periodiccnt) 1976 if (periodiccnt)
1309 { 1977 {
1310 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge; 1978 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1311 if (block > to) block = to; 1979 if (waittime > to) waittime = to;
1312 } 1980 }
1313#endif 1981#endif
1314 1982
1315 if (expect_false (block < 0.)) block = 0.; 1983 if (expect_false (waittime < timeout_blocktime))
1984 waittime = timeout_blocktime;
1985
1986 sleeptime = waittime - backend_fudge;
1987
1988 if (expect_true (sleeptime > io_blocktime))
1989 sleeptime = io_blocktime;
1990
1991 if (sleeptime)
1992 {
1993 ev_sleep (sleeptime);
1994 waittime -= sleeptime;
1995 }
1316 } 1996 }
1317 1997
1998 ++loop_count;
1318 backend_poll (EV_A_ block); 1999 backend_poll (EV_A_ waittime);
2000
2001 /* update ev_rt_now, do magic */
2002 time_update (EV_A_ waittime + sleeptime);
1319 } 2003 }
1320
1321 /* update ev_rt_now, do magic */
1322 time_update (EV_A);
1323 2004
1324 /* queue pending timers and reschedule them */ 2005 /* queue pending timers and reschedule them */
1325 timers_reify (EV_A); /* relative timers called last */ 2006 timers_reify (EV_A); /* relative timers called last */
1326#if EV_PERIODICS 2007#if EV_PERIODIC_ENABLE
1327 periodics_reify (EV_A); /* absolute timers called first */ 2008 periodics_reify (EV_A); /* absolute timers called first */
1328#endif 2009#endif
1329 2010
2011#if EV_IDLE_ENABLE
1330 /* queue idle watchers unless other events are pending */ 2012 /* queue idle watchers unless other events are pending */
1331 if (idlecnt && !any_pending (EV_A)) 2013 idle_reify (EV_A);
1332 queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); 2014#endif
1333 2015
1334 /* queue check watchers, to be executed first */ 2016 /* queue check watchers, to be executed first */
1335 if (expect_false (checkcnt)) 2017 if (expect_false (checkcnt))
1336 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2018 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1337 2019
1338 call_pending (EV_A); 2020 call_pending (EV_A);
1339
1340 if (expect_false (loop_done))
1341 break;
1342 } 2021 }
2022 while (expect_true (
2023 activecnt
2024 && !loop_done
2025 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
2026 ));
1343 2027
1344 if (loop_done == EVUNLOOP_ONE) 2028 if (loop_done == EVUNLOOP_ONE)
1345 loop_done = EVUNLOOP_CANCEL; 2029 loop_done = EVUNLOOP_CANCEL;
1346} 2030}
1347 2031
… …
1351 loop_done = how; 2035 loop_done = how;
1352} 2036}
1353 2037
1354/*****************************************************************************/ 2038/*****************************************************************************/
1355 2039
1356inline void 2040void inline_size
1357wlist_add (WL *head, WL elem) 2041wlist_add (WL *head, WL elem)
1358{ 2042{
1359 elem->next = *head; 2043 elem->next = *head;
1360 *head = elem; 2044 *head = elem;
1361} 2045}
1362 2046
1363inline void 2047void inline_size
1364wlist_del (WL *head, WL elem) 2048wlist_del (WL *head, WL elem)
1365{ 2049{
1366 while (*head) 2050 while (*head)
1367 { 2051 {
1368 if (*head == elem) 2052 if (*head == elem)
… …
1373 2057
1374 head = &(*head)->next; 2058 head = &(*head)->next;
1375 } 2059 }
1376} 2060}
1377 2061
1378inline void 2062void inline_speed
1379ev_clear_pending (EV_P_ W w) 2063clear_pending (EV_P_ W w)
1380{ 2064{
1381 if (w->pending) 2065 if (w->pending)
1382 { 2066 {
1383 pendings [ABSPRI (w)][w->pending - 1].w = 0; 2067 pendings [ABSPRI (w)][w->pending - 1].w = 0;
1384 w->pending = 0; 2068 w->pending = 0;
1385 } 2069 }
1386} 2070}
1387 2071
1388inline void 2072int
2073ev_clear_pending (EV_P_ void *w)
2074{
2075 W w_ = (W)w;
2076 int pending = w_->pending;
2077
2078 if (expect_true (pending))
2079 {
2080 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2081 w_->pending = 0;
2082 p->w = 0;
2083 return p->events;
2084 }
2085 else
2086 return 0;
2087}
2088
2089void inline_size
2090pri_adjust (EV_P_ W w)
2091{
2092 int pri = w->priority;
2093 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2094 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2095 w->priority = pri;
2096}
2097
2098void inline_speed
1389ev_start (EV_P_ W w, int active) 2099ev_start (EV_P_ W w, int active)
1390{ 2100{
1391 if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; 2101 pri_adjust (EV_A_ w);
1392 if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1393
1394 w->active = active; 2102 w->active = active;
1395 ev_ref (EV_A); 2103 ev_ref (EV_A);
1396} 2104}
1397 2105
1398inline void 2106void inline_size
1399ev_stop (EV_P_ W w) 2107ev_stop (EV_P_ W w)
1400{ 2108{
1401 ev_unref (EV_A); 2109 ev_unref (EV_A);
1402 w->active = 0; 2110 w->active = 0;
1403} 2111}
1404 2112
1405/*****************************************************************************/ 2113/*****************************************************************************/
1406 2114
1407void 2115void noinline
1408ev_io_start (EV_P_ ev_io *w) 2116ev_io_start (EV_P_ ev_io *w)
1409{ 2117{
1410 int fd = w->fd; 2118 int fd = w->fd;
1411 2119
1412 if (expect_false (ev_is_active (w))) 2120 if (expect_false (ev_is_active (w)))
1413 return; 2121 return;
1414 2122
1415 assert (("ev_io_start called with negative fd", fd >= 0)); 2123 assert (("ev_io_start called with negative fd", fd >= 0));
2124 assert (("ev_io start called with illegal event mask", !(w->events & ~(EV_IOFDSET | EV_READ | EV_WRITE))));
2125
2126 EV_FREQUENT_CHECK;
1416 2127
1417 ev_start (EV_A_ (W)w, 1); 2128 ev_start (EV_A_ (W)w, 1);
1418 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 2129 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
1419 wlist_add ((WL *)&anfds[fd].head, (WL)w); 2130 wlist_add (&anfds[fd].head, (WL)w);
1420 2131
1421 fd_change (EV_A_ fd); 2132 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);
1422} 2133 w->events &= ~EV_IOFDSET;
1423 2134
1424void 2135 EV_FREQUENT_CHECK;
2136}
2137
2138void noinline
1425ev_io_stop (EV_P_ ev_io *w) 2139ev_io_stop (EV_P_ ev_io *w)
1426{ 2140{
1427 ev_clear_pending (EV_A_ (W)w); 2141 clear_pending (EV_A_ (W)w);
1428 if (expect_false (!ev_is_active (w))) 2142 if (expect_false (!ev_is_active (w)))
1429 return; 2143 return;
1430 2144
1431 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 2145 assert (("ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1432 2146
2147 EV_FREQUENT_CHECK;
2148
1433 wlist_del ((WL *)&anfds[w->fd].head, (WL)w); 2149 wlist_del (&anfds[w->fd].head, (WL)w);
1434 ev_stop (EV_A_ (W)w); 2150 ev_stop (EV_A_ (W)w);
1435 2151
1436 fd_change (EV_A_ w->fd); 2152 fd_change (EV_A_ w->fd, 1);
1437}
1438 2153
1439void 2154 EV_FREQUENT_CHECK;
2155}
2156
2157void noinline
1440ev_timer_start (EV_P_ ev_timer *w) 2158ev_timer_start (EV_P_ ev_timer *w)
1441{ 2159{
1442 if (expect_false (ev_is_active (w))) 2160 if (expect_false (ev_is_active (w)))
1443 return; 2161 return;
1444 2162
1445 ((WT)w)->at += mn_now; 2163 ev_at (w) += mn_now;
1446 2164
1447 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 2165 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1448 2166
2167 EV_FREQUENT_CHECK;
2168
2169 ++timercnt;
1449 ev_start (EV_A_ (W)w, ++timercnt); 2170 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
1450 array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2); 2171 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);
1451 timers [timercnt - 1] = w; 2172 ANHE_w (timers [ev_active (w)]) = (WT)w;
1452 upheap ((WT *)timers, timercnt - 1); 2173 ANHE_at_cache (timers [ev_active (w)]);
2174 upheap (timers, ev_active (w));
1453 2175
2176 EV_FREQUENT_CHECK;
2177
1454 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 2178 /*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
1455} 2179}
1456 2180
1457void 2181void noinline
1458ev_timer_stop (EV_P_ ev_timer *w) 2182ev_timer_stop (EV_P_ ev_timer *w)
1459{ 2183{
1460 ev_clear_pending (EV_A_ (W)w); 2184 clear_pending (EV_A_ (W)w);
1461 if (expect_false (!ev_is_active (w))) 2185 if (expect_false (!ev_is_active (w)))
1462 return; 2186 return;
1463 2187
2188 EV_FREQUENT_CHECK;
2189
2190 {
2191 int active = ev_active (w);
2192
1464 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 2193 assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
1465 2194
2195 --timercnt;
2196
1466 if (expect_true (((W)w)->active < timercnt--)) 2197 if (expect_true (active < timercnt + HEAP0))
1467 { 2198 {
1468 timers [((W)w)->active - 1] = timers [timercnt]; 2199 timers [active] = timers [timercnt + HEAP0];
1469 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1); 2200 adjustheap (timers, timercnt, active);
1470 } 2201 }
2202 }
1471 2203
1472 ((WT)w)->at -= mn_now; 2204 EV_FREQUENT_CHECK;
2205
2206 ev_at (w) -= mn_now;
1473 2207
1474 ev_stop (EV_A_ (W)w); 2208 ev_stop (EV_A_ (W)w);
1475} 2209}
1476 2210
1477void 2211void noinline
1478ev_timer_again (EV_P_ ev_timer *w) 2212ev_timer_again (EV_P_ ev_timer *w)
1479{ 2213{
2214 EV_FREQUENT_CHECK;
2215
1480 if (ev_is_active (w)) 2216 if (ev_is_active (w))
1481 { 2217 {
1482 if (w->repeat) 2218 if (w->repeat)
1483 { 2219 {
1484 ((WT)w)->at = mn_now + w->repeat; 2220 ev_at (w) = mn_now + w->repeat;
2221 ANHE_at_cache (timers [ev_active (w)]);
1485 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1); 2222 adjustheap (timers, timercnt, ev_active (w));
1486 } 2223 }
1487 else 2224 else
1488 ev_timer_stop (EV_A_ w); 2225 ev_timer_stop (EV_A_ w);
1489 } 2226 }
1490 else if (w->repeat) 2227 else if (w->repeat)
1491 { 2228 {
1492 w->at = w->repeat; 2229 ev_at (w) = w->repeat;
1493 ev_timer_start (EV_A_ w); 2230 ev_timer_start (EV_A_ w);
1494 } 2231 }
1495}
1496 2232
2233 EV_FREQUENT_CHECK;
2234}
2235
1497#if EV_PERIODICS 2236#if EV_PERIODIC_ENABLE
1498void 2237void noinline
1499ev_periodic_start (EV_P_ ev_periodic *w) 2238ev_periodic_start (EV_P_ ev_periodic *w)
1500{ 2239{
1501 if (expect_false (ev_is_active (w))) 2240 if (expect_false (ev_is_active (w)))
1502 return; 2241 return;
1503 2242
1504 if (w->reschedule_cb) 2243 if (w->reschedule_cb)
1505 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 2244 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1506 else if (w->interval) 2245 else if (w->interval)
1507 { 2246 {
1508 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 2247 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1509 /* this formula differs from the one in periodic_reify because we do not always round up */ 2248 /* this formula differs from the one in periodic_reify because we do not always round up */
1510 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval; 2249 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1511 } 2250 }
2251 else
2252 ev_at (w) = w->offset;
1512 2253
2254 EV_FREQUENT_CHECK;
2255
2256 ++periodiccnt;
1513 ev_start (EV_A_ (W)w, ++periodiccnt); 2257 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
1514 array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2); 2258 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);
1515 periodics [periodiccnt - 1] = w; 2259 ANHE_w (periodics [ev_active (w)]) = (WT)w;
1516 upheap ((WT *)periodics, periodiccnt - 1); 2260 ANHE_at_cache (periodics [ev_active (w)]);
2261 upheap (periodics, ev_active (w));
1517 2262
2263 EV_FREQUENT_CHECK;
2264
1518 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 2265 /*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
1519} 2266}
1520 2267
1521void 2268void noinline
1522ev_periodic_stop (EV_P_ ev_periodic *w) 2269ev_periodic_stop (EV_P_ ev_periodic *w)
1523{ 2270{
1524 ev_clear_pending (EV_A_ (W)w); 2271 clear_pending (EV_A_ (W)w);
1525 if (expect_false (!ev_is_active (w))) 2272 if (expect_false (!ev_is_active (w)))
1526 return; 2273 return;
1527 2274
2275 EV_FREQUENT_CHECK;
2276
2277 {
2278 int active = ev_active (w);
2279
1528 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 2280 assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
1529 2281
2282 --periodiccnt;
2283
1530 if (expect_true (((W)w)->active < periodiccnt--)) 2284 if (expect_true (active < periodiccnt + HEAP0))
1531 { 2285 {
1532 periodics [((W)w)->active - 1] = periodics [periodiccnt]; 2286 periodics [active] = periodics [periodiccnt + HEAP0];
1533 adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1); 2287 adjustheap (periodics, periodiccnt, active);
1534 } 2288 }
2289 }
2290
2291 EV_FREQUENT_CHECK;
1535 2292
1536 ev_stop (EV_A_ (W)w); 2293 ev_stop (EV_A_ (W)w);
1537} 2294}
1538 2295
1539void 2296void noinline
1540ev_periodic_again (EV_P_ ev_periodic *w) 2297ev_periodic_again (EV_P_ ev_periodic *w)
1541{ 2298{
1542 /* TODO: use adjustheap and recalculation */ 2299 /* TODO: use adjustheap and recalculation */
1543 ev_periodic_stop (EV_A_ w); 2300 ev_periodic_stop (EV_A_ w);
1544 ev_periodic_start (EV_A_ w); 2301 ev_periodic_start (EV_A_ w);
1545} 2302}
1546#endif 2303#endif
1547 2304
1548void 2305#ifndef SA_RESTART
2306# define SA_RESTART 0
2307#endif
2308
2309void noinline
1549ev_idle_start (EV_P_ ev_idle *w) 2310ev_signal_start (EV_P_ ev_signal *w)
1550{ 2311{
2312#if EV_MULTIPLICITY
2313 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2314#endif
1551 if (expect_false (ev_is_active (w))) 2315 if (expect_false (ev_is_active (w)))
1552 return; 2316 return;
1553 2317
2318 assert (("ev_signal_start called with illegal signal number", w->signum > 0));
2319
2320 evpipe_init (EV_A);
2321
2322 EV_FREQUENT_CHECK;
2323
2324 {
2325#ifndef _WIN32
2326 sigset_t full, prev;
2327 sigfillset (&full);
2328 sigprocmask (SIG_SETMASK, &full, &prev);
2329#endif
2330
2331 array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero);
2332
2333#ifndef _WIN32
2334 sigprocmask (SIG_SETMASK, &prev, 0);
2335#endif
2336 }
2337
1554 ev_start (EV_A_ (W)w, ++idlecnt); 2338 ev_start (EV_A_ (W)w, 1);
1555 array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2); 2339 wlist_add (&signals [w->signum - 1].head, (WL)w);
1556 idles [idlecnt - 1] = w;
1557}
1558 2340
1559void 2341 if (!((WL)w)->next)
2342 {
2343#if _WIN32
2344 signal (w->signum, ev_sighandler);
2345#else
2346 struct sigaction sa;
2347 sa.sa_handler = ev_sighandler;
2348 sigfillset (&sa.sa_mask);
2349 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2350 sigaction (w->signum, &sa, 0);
2351#endif
2352 }
2353
2354 EV_FREQUENT_CHECK;
2355}
2356
2357void noinline
1560ev_idle_stop (EV_P_ ev_idle *w) 2358ev_signal_stop (EV_P_ ev_signal *w)
1561{ 2359{
1562 ev_clear_pending (EV_A_ (W)w); 2360 clear_pending (EV_A_ (W)w);
1563 if (expect_false (!ev_is_active (w))) 2361 if (expect_false (!ev_is_active (w)))
1564 return; 2362 return;
1565 2363
1566 { 2364 EV_FREQUENT_CHECK;
1567 int active = ((W)w)->active;
1568 idles [active - 1] = idles [--idlecnt];
1569 ((W)idles [active - 1])->active = active;
1570 }
1571 2365
2366 wlist_del (&signals [w->signum - 1].head, (WL)w);
1572 ev_stop (EV_A_ (W)w); 2367 ev_stop (EV_A_ (W)w);
1573}
1574 2368
2369 if (!signals [w->signum - 1].head)
2370 signal (w->signum, SIG_DFL);
2371
2372 EV_FREQUENT_CHECK;
2373}
2374
1575void 2375void
1576ev_prepare_start (EV_P_ ev_prepare *w) 2376ev_child_start (EV_P_ ev_child *w)
1577{ 2377{
2378#if EV_MULTIPLICITY
2379 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2380#endif
1578 if (expect_false (ev_is_active (w))) 2381 if (expect_false (ev_is_active (w)))
1579 return; 2382 return;
2383
2384 EV_FREQUENT_CHECK;
2385
2386 ev_start (EV_A_ (W)w, 1);
2387 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
2388
2389 EV_FREQUENT_CHECK;
2390}
2391
2392void
2393ev_child_stop (EV_P_ ev_child *w)
2394{
2395 clear_pending (EV_A_ (W)w);
2396 if (expect_false (!ev_is_active (w)))
2397 return;
2398
2399 EV_FREQUENT_CHECK;
2400
2401 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
2402 ev_stop (EV_A_ (W)w);
2403
2404 EV_FREQUENT_CHECK;
2405}
2406
2407#if EV_STAT_ENABLE
2408
2409# ifdef _WIN32
2410# undef lstat
2411# define lstat(a,b) _stati64 (a,b)
2412# endif
2413
2414#define DEF_STAT_INTERVAL 5.0074891
2415#define MIN_STAT_INTERVAL 0.1074891
2416
2417static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2418
2419#if EV_USE_INOTIFY
2420# define EV_INOTIFY_BUFSIZE 8192
2421
2422static void noinline
2423infy_add (EV_P_ ev_stat *w)
2424{
2425 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);
2426
2427 if (w->wd < 0)
2428 {
2429 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2430
2431 /* monitor some parent directory for speedup hints */
2432 /* note that exceeding the hardcoded limit is not a correctness issue, */
2433 /* but an efficiency issue only */
2434 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2435 {
2436 char path [4096];
2437 strcpy (path, w->path);
2438
2439 do
2440 {
2441 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2442 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2443
2444 char *pend = strrchr (path, '/');
2445
2446 if (!pend)
2447 break; /* whoops, no '/', complain to your admin */
2448
2449 *pend = 0;
2450 w->wd = inotify_add_watch (fs_fd, path, mask);
2451 }
2452 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2453 }
2454 }
2455 else
2456 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2457
2458 if (w->wd >= 0)
2459 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2460}
2461
2462static void noinline
2463infy_del (EV_P_ ev_stat *w)
2464{
2465 int slot;
2466 int wd = w->wd;
2467
2468 if (wd < 0)
2469 return;
2470
2471 w->wd = -2;
2472 slot = wd & (EV_INOTIFY_HASHSIZE - 1);
2473 wlist_del (&fs_hash [slot].head, (WL)w);
2474
2475 /* remove this watcher, if others are watching it, they will rearm */
2476 inotify_rm_watch (fs_fd, wd);
2477}
2478
2479static void noinline
2480infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2481{
2482 if (slot < 0)
2483 /* overflow, need to check for all hash slots */
2484 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2485 infy_wd (EV_A_ slot, wd, ev);
2486 else
2487 {
2488 WL w_;
2489
2490 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
2491 {
2492 ev_stat *w = (ev_stat *)w_;
2493 w_ = w_->next; /* lets us remove this watcher and all before it */
2494
2495 if (w->wd == wd || wd == -1)
2496 {
2497 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2498 {
2499 w->wd = -1;
2500 infy_add (EV_A_ w); /* re-add, no matter what */
2501 }
2502
2503 stat_timer_cb (EV_A_ &w->timer, 0);
2504 }
2505 }
2506 }
2507}
2508
2509static void
2510infy_cb (EV_P_ ev_io *w, int revents)
2511{
2512 char buf [EV_INOTIFY_BUFSIZE];
2513 struct inotify_event *ev = (struct inotify_event *)buf;
2514 int ofs;
2515 int len = read (fs_fd, buf, sizeof (buf));
2516
2517 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
2518 infy_wd (EV_A_ ev->wd, ev->wd, ev);
2519}
2520
2521void inline_size
2522infy_init (EV_P)
2523{
2524 if (fs_fd != -2)
2525 return;
2526
2527 /* kernels < 2.6.25 are borked
2528 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2529 */
2530 {
2531 struct utsname buf;
2532 int major, minor, micro;
2533
2534 fs_fd = -1;
2535
2536 if (uname (&buf))
2537 return;
2538
2539 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2540 return;
2541
2542 if (major < 2
2543 || (major == 2 && minor < 6)
2544 || (major == 2 && minor == 6 && micro < 25))
2545 return;
2546 }
2547
2548 fs_fd = inotify_init ();
2549
2550 if (fs_fd >= 0)
2551 {
2552 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2553 ev_set_priority (&fs_w, EV_MAXPRI);
2554 ev_io_start (EV_A_ &fs_w);
2555 }
2556}
2557
2558void inline_size
2559infy_fork (EV_P)
2560{
2561 int slot;
2562
2563 if (fs_fd < 0)
2564 return;
2565
2566 close (fs_fd);
2567 fs_fd = inotify_init ();
2568
2569 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2570 {
2571 WL w_ = fs_hash [slot].head;
2572 fs_hash [slot].head = 0;
2573
2574 while (w_)
2575 {
2576 ev_stat *w = (ev_stat *)w_;
2577 w_ = w_->next; /* lets us add this watcher */
2578
2579 w->wd = -1;
2580
2581 if (fs_fd >= 0)
2582 infy_add (EV_A_ w); /* re-add, no matter what */
2583 else
2584 ev_timer_start (EV_A_ &w->timer);
2585 }
2586 }
2587}
2588
2589#endif
2590
2591#ifdef _WIN32
2592# define EV_LSTAT(p,b) _stati64 (p, b)
2593#else
2594# define EV_LSTAT(p,b) lstat (p, b)
2595#endif
2596
2597void
2598ev_stat_stat (EV_P_ ev_stat *w)
2599{
2600 if (lstat (w->path, &w->attr) < 0)
2601 w->attr.st_nlink = 0;
2602 else if (!w->attr.st_nlink)
2603 w->attr.st_nlink = 1;
2604}
2605
2606static void noinline
2607stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2608{
2609 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2610
2611 /* we copy this here each the time so that */
2612 /* prev has the old value when the callback gets invoked */
2613 w->prev = w->attr;
2614 ev_stat_stat (EV_A_ w);
2615
2616 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2617 if (
2618 w->prev.st_dev != w->attr.st_dev
2619 || w->prev.st_ino != w->attr.st_ino
2620 || w->prev.st_mode != w->attr.st_mode
2621 || w->prev.st_nlink != w->attr.st_nlink
2622 || w->prev.st_uid != w->attr.st_uid
2623 || w->prev.st_gid != w->attr.st_gid
2624 || w->prev.st_rdev != w->attr.st_rdev
2625 || w->prev.st_size != w->attr.st_size
2626 || w->prev.st_atime != w->attr.st_atime
2627 || w->prev.st_mtime != w->attr.st_mtime
2628 || w->prev.st_ctime != w->attr.st_ctime
2629 ) {
2630 #if EV_USE_INOTIFY
2631 if (fs_fd >= 0)
2632 {
2633 infy_del (EV_A_ w);
2634 infy_add (EV_A_ w);
2635 ev_stat_stat (EV_A_ w); /* avoid race... */
2636 }
2637 #endif
2638
2639 ev_feed_event (EV_A_ w, EV_STAT);
2640 }
2641}
2642
2643void
2644ev_stat_start (EV_P_ ev_stat *w)
2645{
2646 if (expect_false (ev_is_active (w)))
2647 return;
2648
2649 /* since we use memcmp, we need to clear any padding data etc. */
2650 memset (&w->prev, 0, sizeof (ev_statdata));
2651 memset (&w->attr, 0, sizeof (ev_statdata));
2652
2653 ev_stat_stat (EV_A_ w);
2654
2655 if (w->interval < MIN_STAT_INTERVAL)
2656 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2657
2658 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
2659 ev_set_priority (&w->timer, ev_priority (w));
2660
2661#if EV_USE_INOTIFY
2662 infy_init (EV_A);
2663
2664 if (fs_fd >= 0)
2665 infy_add (EV_A_ w);
2666 else
2667#endif
2668 ev_timer_start (EV_A_ &w->timer);
2669
2670 ev_start (EV_A_ (W)w, 1);
2671
2672 EV_FREQUENT_CHECK;
2673}
2674
2675void
2676ev_stat_stop (EV_P_ ev_stat *w)
2677{
2678 clear_pending (EV_A_ (W)w);
2679 if (expect_false (!ev_is_active (w)))
2680 return;
2681
2682 EV_FREQUENT_CHECK;
2683
2684#if EV_USE_INOTIFY
2685 infy_del (EV_A_ w);
2686#endif
2687 ev_timer_stop (EV_A_ &w->timer);
2688
2689 ev_stop (EV_A_ (W)w);
2690
2691 EV_FREQUENT_CHECK;
2692}
2693#endif
2694
2695#if EV_IDLE_ENABLE
2696void
2697ev_idle_start (EV_P_ ev_idle *w)
2698{
2699 if (expect_false (ev_is_active (w)))
2700 return;
2701
2702 pri_adjust (EV_A_ (W)w);
2703
2704 EV_FREQUENT_CHECK;
2705
2706 {
2707 int active = ++idlecnt [ABSPRI (w)];
2708
2709 ++idleall;
2710 ev_start (EV_A_ (W)w, active);
2711
2712 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2713 idles [ABSPRI (w)][active - 1] = w;
2714 }
2715
2716 EV_FREQUENT_CHECK;
2717}
2718
2719void
2720ev_idle_stop (EV_P_ ev_idle *w)
2721{
2722 clear_pending (EV_A_ (W)w);
2723 if (expect_false (!ev_is_active (w)))
2724 return;
2725
2726 EV_FREQUENT_CHECK;
2727
2728 {
2729 int active = ev_active (w);
2730
2731 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2732 ev_active (idles [ABSPRI (w)][active - 1]) = active;
2733
2734 ev_stop (EV_A_ (W)w);
2735 --idleall;
2736 }
2737
2738 EV_FREQUENT_CHECK;
2739}
2740#endif
2741
2742void
2743ev_prepare_start (EV_P_ ev_prepare *w)
2744{
2745 if (expect_false (ev_is_active (w)))
2746 return;
2747
2748 EV_FREQUENT_CHECK;
1580 2749
1581 ev_start (EV_A_ (W)w, ++preparecnt); 2750 ev_start (EV_A_ (W)w, ++preparecnt);
1582 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 2751 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
1583 prepares [preparecnt - 1] = w; 2752 prepares [preparecnt - 1] = w;
2753
2754 EV_FREQUENT_CHECK;
1584} 2755}
1585 2756
1586void 2757void
1587ev_prepare_stop (EV_P_ ev_prepare *w) 2758ev_prepare_stop (EV_P_ ev_prepare *w)
1588{ 2759{
1589 ev_clear_pending (EV_A_ (W)w); 2760 clear_pending (EV_A_ (W)w);
1590 if (expect_false (!ev_is_active (w))) 2761 if (expect_false (!ev_is_active (w)))
1591 return; 2762 return;
1592 2763
2764 EV_FREQUENT_CHECK;
2765
1593 { 2766 {
1594 int active = ((W)w)->active; 2767 int active = ev_active (w);
2768
1595 prepares [active - 1] = prepares [--preparecnt]; 2769 prepares [active - 1] = prepares [--preparecnt];
1596 ((W)prepares [active - 1])->active = active; 2770 ev_active (prepares [active - 1]) = active;
1597 } 2771 }
1598 2772
1599 ev_stop (EV_A_ (W)w); 2773 ev_stop (EV_A_ (W)w);
2774
2775 EV_FREQUENT_CHECK;
1600} 2776}
1601 2777
1602void 2778void
1603ev_check_start (EV_P_ ev_check *w) 2779ev_check_start (EV_P_ ev_check *w)
1604{ 2780{
1605 if (expect_false (ev_is_active (w))) 2781 if (expect_false (ev_is_active (w)))
1606 return; 2782 return;
2783
2784 EV_FREQUENT_CHECK;
1607 2785
1608 ev_start (EV_A_ (W)w, ++checkcnt); 2786 ev_start (EV_A_ (W)w, ++checkcnt);
1609 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 2787 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
1610 checks [checkcnt - 1] = w; 2788 checks [checkcnt - 1] = w;
2789
2790 EV_FREQUENT_CHECK;
1611} 2791}
1612 2792
1613void 2793void
1614ev_check_stop (EV_P_ ev_check *w) 2794ev_check_stop (EV_P_ ev_check *w)
1615{ 2795{
1616 ev_clear_pending (EV_A_ (W)w); 2796 clear_pending (EV_A_ (W)w);
1617 if (expect_false (!ev_is_active (w))) 2797 if (expect_false (!ev_is_active (w)))
1618 return; 2798 return;
1619 2799
2800 EV_FREQUENT_CHECK;
2801
1620 { 2802 {
1621 int active = ((W)w)->active; 2803 int active = ev_active (w);
2804
1622 checks [active - 1] = checks [--checkcnt]; 2805 checks [active - 1] = checks [--checkcnt];
1623 ((W)checks [active - 1])->active = active; 2806 ev_active (checks [active - 1]) = active;
1624 } 2807 }
1625 2808
1626 ev_stop (EV_A_ (W)w); 2809 ev_stop (EV_A_ (W)w);
1627}
1628 2810
1629#ifndef SA_RESTART 2811 EV_FREQUENT_CHECK;
1630# define SA_RESTART 0
1631#endif
1632
1633void
1634ev_signal_start (EV_P_ ev_signal *w)
1635{
1636#if EV_MULTIPLICITY
1637 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1638#endif
1639 if (expect_false (ev_is_active (w)))
1640 return;
1641
1642 assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1643
1644 ev_start (EV_A_ (W)w, 1);
1645 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1646 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1647
1648 if (!((WL)w)->next)
1649 {
1650#if _WIN32
1651 signal (w->signum, sighandler);
1652#else
1653 struct sigaction sa;
1654 sa.sa_handler = sighandler;
1655 sigfillset (&sa.sa_mask);
1656 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1657 sigaction (w->signum, &sa, 0);
1658#endif
1659 }
1660} 2812}
1661 2813
1662void 2814#if EV_EMBED_ENABLE
1663ev_signal_stop (EV_P_ ev_signal *w) 2815void noinline
1664{
1665 ev_clear_pending (EV_A_ (W)w);
1666 if (expect_false (!ev_is_active (w)))
1667 return;
1668
1669 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1670 ev_stop (EV_A_ (W)w);
1671
1672 if (!signals [w->signum - 1].head)
1673 signal (w->signum, SIG_DFL);
1674}
1675
1676void
1677ev_child_start (EV_P_ ev_child *w)
1678{
1679#if EV_MULTIPLICITY
1680 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1681#endif
1682 if (expect_false (ev_is_active (w)))
1683 return;
1684
1685 ev_start (EV_A_ (W)w, 1);
1686 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1687}
1688
1689void
1690ev_child_stop (EV_P_ ev_child *w)
1691{
1692 ev_clear_pending (EV_A_ (W)w);
1693 if (expect_false (!ev_is_active (w)))
1694 return;
1695
1696 wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1697 ev_stop (EV_A_ (W)w);
1698}
1699
1700#if EV_MULTIPLICITY
1701void
1702ev_embed_sweep (EV_P_ ev_embed *w) 2816ev_embed_sweep (EV_P_ ev_embed *w)
1703{ 2817{
1704 ev_loop (w->loop, EVLOOP_NONBLOCK); 2818 ev_loop (w->other, EVLOOP_NONBLOCK);
1705} 2819}
1706 2820
1707static void 2821static void
1708embed_cb (EV_P_ ev_io *io, int revents) 2822embed_io_cb (EV_P_ ev_io *io, int revents)
1709{ 2823{
1710 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 2824 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
1711 2825
1712 if (ev_cb (w)) 2826 if (ev_cb (w))
1713 ev_feed_event (EV_A_ (W)w, EV_EMBED); 2827 ev_feed_event (EV_A_ (W)w, EV_EMBED);
1714 else 2828 else
1715 ev_embed_sweep (loop, w); 2829 ev_loop (w->other, EVLOOP_NONBLOCK);
1716} 2830}
2831
2832static void
2833embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2834{
2835 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2836
2837 {
2838 struct ev_loop *loop = w->other;
2839
2840 while (fdchangecnt)
2841 {
2842 fd_reify (EV_A);
2843 ev_loop (EV_A_ EVLOOP_NONBLOCK);
2844 }
2845 }
2846}
2847
2848static void
2849embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
2850{
2851 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
2852
2853 {
2854 struct ev_loop *loop = w->other;
2855
2856 ev_loop_fork (EV_A);
2857 }
2858}
2859
2860#if 0
2861static void
2862embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2863{
2864 ev_idle_stop (EV_A_ idle);
2865}
2866#endif
1717 2867
1718void 2868void
1719ev_embed_start (EV_P_ ev_embed *w) 2869ev_embed_start (EV_P_ ev_embed *w)
1720{ 2870{
1721 if (expect_false (ev_is_active (w))) 2871 if (expect_false (ev_is_active (w)))
1722 return; 2872 return;
1723 2873
1724 { 2874 {
1725 struct ev_loop *loop = w->loop; 2875 struct ev_loop *loop = w->other;
1726 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 2876 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
1727 ev_io_init (&w->io, embed_cb, backend_fd, EV_READ); 2877 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
1728 } 2878 }
2879
2880 EV_FREQUENT_CHECK;
1729 2881
1730 ev_set_priority (&w->io, ev_priority (w)); 2882 ev_set_priority (&w->io, ev_priority (w));
1731 ev_io_start (EV_A_ &w->io); 2883 ev_io_start (EV_A_ &w->io);
2884
2885 ev_prepare_init (&w->prepare, embed_prepare_cb);
2886 ev_set_priority (&w->prepare, EV_MINPRI);
2887 ev_prepare_start (EV_A_ &w->prepare);
2888
2889 ev_fork_init (&w->fork, embed_fork_cb);
2890 ev_fork_start (EV_A_ &w->fork);
2891
2892 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2893
1732 ev_start (EV_A_ (W)w, 1); 2894 ev_start (EV_A_ (W)w, 1);
2895
2896 EV_FREQUENT_CHECK;
1733} 2897}
1734 2898
1735void 2899void
1736ev_embed_stop (EV_P_ ev_embed *w) 2900ev_embed_stop (EV_P_ ev_embed *w)
1737{ 2901{
1738 ev_clear_pending (EV_A_ (W)w); 2902 clear_pending (EV_A_ (W)w);
1739 if (expect_false (!ev_is_active (w))) 2903 if (expect_false (!ev_is_active (w)))
1740 return; 2904 return;
1741 2905
2906 EV_FREQUENT_CHECK;
2907
1742 ev_io_stop (EV_A_ &w->io); 2908 ev_io_stop (EV_A_ &w->io);
2909 ev_prepare_stop (EV_A_ &w->prepare);
2910 ev_fork_stop (EV_A_ &w->fork);
2911
2912 EV_FREQUENT_CHECK;
2913}
2914#endif
2915
2916#if EV_FORK_ENABLE
2917void
2918ev_fork_start (EV_P_ ev_fork *w)
2919{
2920 if (expect_false (ev_is_active (w)))
2921 return;
2922
2923 EV_FREQUENT_CHECK;
2924
2925 ev_start (EV_A_ (W)w, ++forkcnt);
2926 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2927 forks [forkcnt - 1] = w;
2928
2929 EV_FREQUENT_CHECK;
2930}
2931
2932void
2933ev_fork_stop (EV_P_ ev_fork *w)
2934{
2935 clear_pending (EV_A_ (W)w);
2936 if (expect_false (!ev_is_active (w)))
2937 return;
2938
2939 EV_FREQUENT_CHECK;
2940
2941 {
2942 int active = ev_active (w);
2943
2944 forks [active - 1] = forks [--forkcnt];
2945 ev_active (forks [active - 1]) = active;
2946 }
2947
1743 ev_stop (EV_A_ (W)w); 2948 ev_stop (EV_A_ (W)w);
2949
2950 EV_FREQUENT_CHECK;
2951}
2952#endif
2953
2954#if EV_ASYNC_ENABLE
2955void
2956ev_async_start (EV_P_ ev_async *w)
2957{
2958 if (expect_false (ev_is_active (w)))
2959 return;
2960
2961 evpipe_init (EV_A);
2962
2963 EV_FREQUENT_CHECK;
2964
2965 ev_start (EV_A_ (W)w, ++asynccnt);
2966 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
2967 asyncs [asynccnt - 1] = w;
2968
2969 EV_FREQUENT_CHECK;
2970}
2971
2972void
2973ev_async_stop (EV_P_ ev_async *w)
2974{
2975 clear_pending (EV_A_ (W)w);
2976 if (expect_false (!ev_is_active (w)))
2977 return;
2978
2979 EV_FREQUENT_CHECK;
2980
2981 {
2982 int active = ev_active (w);
2983
2984 asyncs [active - 1] = asyncs [--asynccnt];
2985 ev_active (asyncs [active - 1]) = active;
2986 }
2987
2988 ev_stop (EV_A_ (W)w);
2989
2990 EV_FREQUENT_CHECK;
2991}
2992
2993void
2994ev_async_send (EV_P_ ev_async *w)
2995{
2996 w->sent = 1;
2997 evpipe_write (EV_A_ &gotasync);
1744} 2998}
1745#endif 2999#endif
1746 3000
1747/*****************************************************************************/ 3001/*****************************************************************************/
1748 3002
… …
1758once_cb (EV_P_ struct ev_once *once, int revents) 3012once_cb (EV_P_ struct ev_once *once, int revents)
1759{ 3013{
1760 void (*cb)(int revents, void *arg) = once->cb; 3014 void (*cb)(int revents, void *arg) = once->cb;
1761 void *arg = once->arg; 3015 void *arg = once->arg;
1762 3016
1763 ev_io_stop (EV_A_ &once->io); 3017 ev_io_stop (EV_A_ &once->io);
1764 ev_timer_stop (EV_A_ &once->to); 3018 ev_timer_stop (EV_A_ &once->to);
1765 ev_free (once); 3019 ev_free (once);
1766 3020
1767 cb (revents, arg); 3021 cb (revents, arg);
1768} 3022}
1769 3023
1770static void 3024static void
1771once_cb_io (EV_P_ ev_io *w, int revents) 3025once_cb_io (EV_P_ ev_io *w, int revents)
1772{ 3026{
1773 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 3027 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
3028
3029 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
1774} 3030}
1775 3031
1776static void 3032static void
1777once_cb_to (EV_P_ ev_timer *w, int revents) 3033once_cb_to (EV_P_ ev_timer *w, int revents)
1778{ 3034{
1779 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 3035 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
3036
3037 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
1780} 3038}
1781 3039
1782void 3040void
1783ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 3041ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1784{ 3042{
… …
1806 ev_timer_set (&once->to, timeout, 0.); 3064 ev_timer_set (&once->to, timeout, 0.);
1807 ev_timer_start (EV_A_ &once->to); 3065 ev_timer_start (EV_A_ &once->to);
1808 } 3066 }
1809} 3067}
1810 3068
3069#if EV_MULTIPLICITY
3070 #include "ev_wrap.h"
3071#endif
3072
1811#ifdef __cplusplus 3073#ifdef __cplusplus
1812} 3074}
1813#endif 3075#endif
1814 3076

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