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Comparing libev/ev.c (file contents):
Revision 1.85 by root, Sat Nov 10 03:13:50 2007 UTC vs.
Revision 1.250 by root, Thu May 22 02:44:57 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 */
39
40#ifdef __cplusplus
41extern "C" {
42#endif
43
44/* this big block deduces configuration from config.h */
31#ifndef EV_STANDALONE 45#ifndef EV_STANDALONE
46# ifdef EV_CONFIG_H
47# include EV_CONFIG_H
48# else
32# include "config.h" 49# include "config.h"
50# endif
33 51
34# if HAVE_CLOCK_GETTIME 52# if HAVE_CLOCK_GETTIME
53# ifndef EV_USE_MONOTONIC
35# define EV_USE_MONOTONIC 1 54# define EV_USE_MONOTONIC 1
55# endif
56# ifndef EV_USE_REALTIME
36# define EV_USE_REALTIME 1 57# define EV_USE_REALTIME 1
58# endif
59# else
60# ifndef EV_USE_MONOTONIC
61# define EV_USE_MONOTONIC 0
62# endif
63# ifndef EV_USE_REALTIME
64# define EV_USE_REALTIME 0
65# endif
37# endif 66# endif
38 67
39# if HAVE_SELECT && HAVE_SYS_SELECT_H 68# ifndef EV_USE_NANOSLEEP
69# if HAVE_NANOSLEEP
40# define EV_USE_SELECT 1 70# define EV_USE_NANOSLEEP 1
71# else
72# define EV_USE_NANOSLEEP 0
73# endif
41# endif 74# endif
42 75
43# if HAVE_POLL && HAVE_POLL_H 76# ifndef EV_USE_SELECT
77# if HAVE_SELECT && HAVE_SYS_SELECT_H
44# define EV_USE_POLL 1 78# define EV_USE_SELECT 1
79# else
80# define EV_USE_SELECT 0
81# endif
45# endif 82# endif
46 83
47# if HAVE_EPOLL && HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H 84# ifndef EV_USE_POLL
85# if HAVE_POLL && HAVE_POLL_H
48# define EV_USE_EPOLL 1 86# define EV_USE_POLL 1
87# else
88# define EV_USE_POLL 0
89# endif
49# endif 90# endif
50 91
51# if HAVE_KQUEUE && HAVE_WORKING_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H 92# ifndef EV_USE_EPOLL
93# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
52# define EV_USE_KQUEUE 1 94# define EV_USE_EPOLL 1
95# else
96# define EV_USE_EPOLL 0
97# endif
53# endif 98# endif
99
100# ifndef EV_USE_KQUEUE
101# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H
102# define EV_USE_KQUEUE 1
103# else
104# define EV_USE_KQUEUE 0
105# endif
106# endif
107
108# ifndef EV_USE_PORT
109# if HAVE_PORT_H && HAVE_PORT_CREATE
110# define EV_USE_PORT 1
111# else
112# define EV_USE_PORT 0
113# endif
114# endif
54 115
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
55#endif 132#endif
56 133
57#include <math.h> 134#include <math.h>
58#include <stdlib.h> 135#include <stdlib.h>
59#include <fcntl.h> 136#include <fcntl.h>
… …
66#include <sys/types.h> 143#include <sys/types.h>
67#include <time.h> 144#include <time.h>
68 145
69#include <signal.h> 146#include <signal.h>
70 147
71#ifndef WIN32
72# include <unistd.h>
73# include <sys/time.h>
74# include <sys/wait.h>
75#endif
76/**/
77
78#ifndef EV_USE_MONOTONIC
79# define EV_USE_MONOTONIC 1
80#endif
81
82#ifndef EV_USE_SELECT
83# define EV_USE_SELECT 1
84#endif
85
86#ifndef EV_USE_POLL
87# define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */
88#endif
89
90#ifndef EV_USE_EPOLL
91# define EV_USE_EPOLL 0
92#endif
93
94#ifndef EV_USE_KQUEUE
95# define EV_USE_KQUEUE 0
96#endif
97
98#ifndef EV_USE_WIN32
99# ifdef WIN32
100# define EV_USE_WIN32 0 /* it does not exist, use select */
101# undef EV_USE_SELECT
102# define EV_USE_SELECT 1
103# else
104# define EV_USE_WIN32 0
105# endif
106#endif
107
108#ifndef EV_USE_REALTIME
109# define EV_USE_REALTIME 1
110#endif
111
112/**/
113
114#ifndef CLOCK_MONOTONIC
115# undef EV_USE_MONOTONIC
116# define EV_USE_MONOTONIC 0
117#endif
118
119#ifndef CLOCK_REALTIME
120# undef EV_USE_REALTIME
121# define EV_USE_REALTIME 0
122#endif
123
124/**/
125
126#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
127#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */
128#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
129/*#define CLEANUP_INTERVAL 300. /* how often to try to free memory and re-check fds */
130
131#ifdef EV_H 148#ifdef EV_H
132# include EV_H 149# include EV_H
133#else 150#else
134# include "ev.h" 151# include "ev.h"
135#endif 152#endif
136 153
154#ifndef _WIN32
155# include <sys/time.h>
156# include <sys/wait.h>
157# include <unistd.h>
158#else
159# define WIN32_LEAN_AND_MEAN
160# include <windows.h>
161# ifndef EV_SELECT_IS_WINSOCKET
162# define EV_SELECT_IS_WINSOCKET 1
163# endif
164#endif
165
166/* this block tries to deduce configuration from header-defined symbols and defaults */
167
168#ifndef EV_USE_MONOTONIC
169# define EV_USE_MONOTONIC 0
170#endif
171
172#ifndef EV_USE_REALTIME
173# define EV_USE_REALTIME 0
174#endif
175
176#ifndef EV_USE_NANOSLEEP
177# define EV_USE_NANOSLEEP 0
178#endif
179
180#ifndef EV_USE_SELECT
181# define EV_USE_SELECT 1
182#endif
183
184#ifndef EV_USE_POLL
185# ifdef _WIN32
186# define EV_USE_POLL 0
187# else
188# define EV_USE_POLL 1
189# endif
190#endif
191
192#ifndef EV_USE_EPOLL
193# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
194# define EV_USE_EPOLL 1
195# else
196# define EV_USE_EPOLL 0
197# endif
198#endif
199
200#ifndef EV_USE_KQUEUE
201# define EV_USE_KQUEUE 0
202#endif
203
204#ifndef EV_USE_PORT
205# define EV_USE_PORT 0
206#endif
207
208#ifndef EV_USE_INOTIFY
209# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
210# define EV_USE_INOTIFY 1
211# else
212# define EV_USE_INOTIFY 0
213# endif
214#endif
215
216#ifndef EV_PID_HASHSIZE
217# if EV_MINIMAL
218# define EV_PID_HASHSIZE 1
219# else
220# define EV_PID_HASHSIZE 16
221# endif
222#endif
223
224#ifndef EV_INOTIFY_HASHSIZE
225# if EV_MINIMAL
226# define EV_INOTIFY_HASHSIZE 1
227# else
228# define EV_INOTIFY_HASHSIZE 16
229# endif
230#endif
231
232#ifndef EV_USE_EVENTFD
233# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
234# define EV_USE_EVENTFD 1
235# else
236# define EV_USE_EVENTFD 0
237# endif
238#endif
239
240#if 0 /* debugging */
241# define EV_VERIFY 3
242# define EV_USE_4HEAP 1
243# define EV_HEAP_CACHE_AT 1
244#endif
245
246#ifndef EV_VERIFY
247# define EV_VERIFY !EV_MINIMAL
248#endif
249
250#ifndef EV_USE_4HEAP
251# define EV_USE_4HEAP !EV_MINIMAL
252#endif
253
254#ifndef EV_HEAP_CACHE_AT
255# define EV_HEAP_CACHE_AT !EV_MINIMAL
256#endif
257
258/* this block fixes any misconfiguration where we know we run into trouble otherwise */
259
260#ifndef CLOCK_MONOTONIC
261# undef EV_USE_MONOTONIC
262# define EV_USE_MONOTONIC 0
263#endif
264
265#ifndef CLOCK_REALTIME
266# undef EV_USE_REALTIME
267# define EV_USE_REALTIME 0
268#endif
269
270#if !EV_STAT_ENABLE
271# undef EV_USE_INOTIFY
272# define EV_USE_INOTIFY 0
273#endif
274
275#if !EV_USE_NANOSLEEP
276# ifndef _WIN32
277# include <sys/select.h>
278# endif
279#endif
280
281#if EV_USE_INOTIFY
282# include <sys/inotify.h>
283#endif
284
285#if EV_SELECT_IS_WINSOCKET
286# include <winsock.h>
287#endif
288
289#if EV_USE_EVENTFD
290/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
291# include <stdint.h>
292# ifdef __cplusplus
293extern "C" {
294# endif
295int eventfd (unsigned int initval, int flags);
296# ifdef __cplusplus
297}
298# endif
299#endif
300
301/**/
302
303#if EV_VERIFY >= 3
304# define EV_FREQUENT_CHECK ev_loop_verify (EV_A)
305#else
306# define EV_FREQUENT_CHECK do { } while (0)
307#endif
308
309/*
310 * This is used to avoid floating point rounding problems.
311 * It is added to ev_rt_now when scheduling periodics
312 * to ensure progress, time-wise, even when rounding
313 * errors are against us.
314 * This value is good at least till the year 4000.
315 * Better solutions welcome.
316 */
317#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
318
319#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
320#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
321/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
322
137#if __GNUC__ >= 3 323#if __GNUC__ >= 4
138# define expect(expr,value) __builtin_expect ((expr),(value)) 324# define expect(expr,value) __builtin_expect ((expr),(value))
139# define inline inline 325# define noinline __attribute__ ((noinline))
140#else 326#else
141# define expect(expr,value) (expr) 327# define expect(expr,value) (expr)
142# define inline static 328# define noinline
329# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
330# define inline
331# endif
143#endif 332#endif
144 333
145#define expect_false(expr) expect ((expr) != 0, 0) 334#define expect_false(expr) expect ((expr) != 0, 0)
146#define expect_true(expr) expect ((expr) != 0, 1) 335#define expect_true(expr) expect ((expr) != 0, 1)
336#define inline_size static inline
337
338#if EV_MINIMAL
339# define inline_speed static noinline
340#else
341# define inline_speed static inline
342#endif
147 343
148#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 344#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
149#define ABSPRI(w) ((w)->priority - EV_MINPRI) 345#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
150 346
347#define EMPTY /* required for microsofts broken pseudo-c compiler */
348#define EMPTY2(a,b) /* used to suppress some warnings */
349
151typedef struct ev_watcher *W; 350typedef ev_watcher *W;
152typedef struct ev_watcher_list *WL; 351typedef ev_watcher_list *WL;
153typedef struct ev_watcher_time *WT; 352typedef ev_watcher_time *WT;
154 353
354#define ev_active(w) ((W)(w))->active
355#define ev_at(w) ((WT)(w))->at
356
357#if EV_USE_MONOTONIC
358/* sig_atomic_t is used to avoid per-thread variables or locking but still */
359/* giving it a reasonably high chance of working on typical architetcures */
155static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 360static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
361#endif
156 362
363#ifdef _WIN32
157#include "ev_win32.c" 364# include "ev_win32.c"
365#endif
158 366
159/*****************************************************************************/ 367/*****************************************************************************/
160 368
161static void (*syserr_cb)(const char *msg); 369static void (*syserr_cb)(const char *msg);
162 370
371void
163void ev_set_syserr_cb (void (*cb)(const char *msg)) 372ev_set_syserr_cb (void (*cb)(const char *msg))
164{ 373{
165 syserr_cb = cb; 374 syserr_cb = cb;
166} 375}
167 376
168static void 377static void noinline
169syserr (const char *msg) 378syserr (const char *msg)
170{ 379{
171 if (!msg) 380 if (!msg)
172 msg = "(libev) system error"; 381 msg = "(libev) system error";
173 382
… …
178 perror (msg); 387 perror (msg);
179 abort (); 388 abort ();
180 } 389 }
181} 390}
182 391
392static void *
393ev_realloc_emul (void *ptr, long size)
394{
395 /* some systems, notably openbsd and darwin, fail to properly
396 * implement realloc (x, 0) (as required by both ansi c-98 and
397 * the single unix specification, so work around them here.
398 */
399
400 if (size)
401 return realloc (ptr, size);
402
403 free (ptr);
404 return 0;
405}
406
183static void *(*alloc)(void *ptr, long size); 407static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
184 408
409void
185void ev_set_allocator (void *(*cb)(void *ptr, long size)) 410ev_set_allocator (void *(*cb)(void *ptr, long size))
186{ 411{
187 alloc = cb; 412 alloc = cb;
188} 413}
189 414
190static void * 415inline_speed void *
191ev_realloc (void *ptr, long size) 416ev_realloc (void *ptr, long size)
192{ 417{
193 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size); 418 ptr = alloc (ptr, size);
194 419
195 if (!ptr && size) 420 if (!ptr && size)
196 { 421 {
197 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 422 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
198 abort (); 423 abort ();
… …
209typedef struct 434typedef struct
210{ 435{
211 WL head; 436 WL head;
212 unsigned char events; 437 unsigned char events;
213 unsigned char reify; 438 unsigned char reify;
439#if EV_SELECT_IS_WINSOCKET
440 SOCKET handle;
441#endif
214} ANFD; 442} ANFD;
215 443
216typedef struct 444typedef struct
217{ 445{
218 W w; 446 W w;
219 int events; 447 int events;
220} ANPENDING; 448} ANPENDING;
221 449
450#if EV_USE_INOTIFY
451/* hash table entry per inotify-id */
452typedef struct
453{
454 WL head;
455} ANFS;
456#endif
457
458/* Heap Entry */
459#if EV_HEAP_CACHE_AT
460 typedef struct {
461 ev_tstamp at;
462 WT w;
463 } ANHE;
464
465 #define ANHE_w(he) (he).w /* access watcher, read-write */
466 #define ANHE_at(he) (he).at /* access cached at, read-only */
467 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
468#else
469 typedef WT ANHE;
470
471 #define ANHE_w(he) (he)
472 #define ANHE_at(he) (he)->at
473 #define ANHE_at_cache(he)
474#endif
475
222#if EV_MULTIPLICITY 476#if EV_MULTIPLICITY
223 477
224 struct ev_loop 478 struct ev_loop
225 { 479 {
480 ev_tstamp ev_rt_now;
481 #define ev_rt_now ((loop)->ev_rt_now)
226 #define VAR(name,decl) decl; 482 #define VAR(name,decl) decl;
227 #include "ev_vars.h" 483 #include "ev_vars.h"
228 #undef VAR 484 #undef VAR
229 }; 485 };
230 #include "ev_wrap.h" 486 #include "ev_wrap.h"
231 487
232 struct ev_loop default_loop_struct; 488 static struct ev_loop default_loop_struct;
233 static struct ev_loop *default_loop; 489 struct ev_loop *ev_default_loop_ptr;
234 490
235#else 491#else
236 492
493 ev_tstamp ev_rt_now;
237 #define VAR(name,decl) static decl; 494 #define VAR(name,decl) static decl;
238 #include "ev_vars.h" 495 #include "ev_vars.h"
239 #undef VAR 496 #undef VAR
240 497
241 static int default_loop; 498 static int ev_default_loop_ptr;
242 499
243#endif 500#endif
244 501
245/*****************************************************************************/ 502/*****************************************************************************/
246 503
247inline ev_tstamp 504ev_tstamp
248ev_time (void) 505ev_time (void)
249{ 506{
250#if EV_USE_REALTIME 507#if EV_USE_REALTIME
251 struct timespec ts; 508 struct timespec ts;
252 clock_gettime (CLOCK_REALTIME, &ts); 509 clock_gettime (CLOCK_REALTIME, &ts);
… …
256 gettimeofday (&tv, 0); 513 gettimeofday (&tv, 0);
257 return tv.tv_sec + tv.tv_usec * 1e-6; 514 return tv.tv_sec + tv.tv_usec * 1e-6;
258#endif 515#endif
259} 516}
260 517
261inline ev_tstamp 518ev_tstamp inline_size
262get_clock (void) 519get_clock (void)
263{ 520{
264#if EV_USE_MONOTONIC 521#if EV_USE_MONOTONIC
265 if (expect_true (have_monotonic)) 522 if (expect_true (have_monotonic))
266 { 523 {
… …
279{ 536{
280 return ev_rt_now; 537 return ev_rt_now;
281} 538}
282#endif 539#endif
283 540
284#define array_roundsize(type,n) ((n) | 4 & ~3) 541void
542ev_sleep (ev_tstamp delay)
543{
544 if (delay > 0.)
545 {
546#if EV_USE_NANOSLEEP
547 struct timespec ts;
548
549 ts.tv_sec = (time_t)delay;
550 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
551
552 nanosleep (&ts, 0);
553#elif defined(_WIN32)
554 Sleep ((unsigned long)(delay * 1e3));
555#else
556 struct timeval tv;
557
558 tv.tv_sec = (time_t)delay;
559 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
560
561 select (0, 0, 0, 0, &tv);
562#endif
563 }
564}
565
566/*****************************************************************************/
567
568#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
569
570int inline_size
571array_nextsize (int elem, int cur, int cnt)
572{
573 int ncur = cur + 1;
574
575 do
576 ncur <<= 1;
577 while (cnt > ncur);
578
579 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */
580 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
581 {
582 ncur *= elem;
583 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
584 ncur = ncur - sizeof (void *) * 4;
585 ncur /= elem;
586 }
587
588 return ncur;
589}
590
591static noinline void *
592array_realloc (int elem, void *base, int *cur, int cnt)
593{
594 *cur = array_nextsize (elem, *cur, cnt);
595 return ev_realloc (base, elem * *cur);
596}
285 597
286#define array_needsize(type,base,cur,cnt,init) \ 598#define array_needsize(type,base,cur,cnt,init) \
287 if (expect_false ((cnt) > cur)) \ 599 if (expect_false ((cnt) > (cur))) \
288 { \ 600 { \
289 int newcnt = cur; \ 601 int ocur_ = (cur); \
290 do \ 602 (base) = (type *)array_realloc \
291 { \ 603 (sizeof (type), (base), &(cur), (cnt)); \
292 newcnt = array_roundsize (type, newcnt << 1); \ 604 init ((base) + (ocur_), (cur) - ocur_); \
293 } \
294 while ((cnt) > newcnt); \
295 \
296 base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\
297 init (base + cur, newcnt - cur); \
298 cur = newcnt; \
299 } 605 }
300 606
607#if 0
301#define array_slim(type,stem) \ 608#define array_slim(type,stem) \
302 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 609 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
303 { \ 610 { \
304 stem ## max = array_roundsize (stem ## cnt >> 1); \ 611 stem ## max = array_roundsize (stem ## cnt >> 1); \
305 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\ 612 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
306 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 613 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
307 } 614 }
308 615#endif
309/* microsoft's pseudo-c is quite far from C as the rest of the world and the standard knows it */
310/* bringing us everlasting joy in form of stupid extra macros that are not required in C */
311#define array_free_microshit(stem) \
312 ev_free (stem ## s); stem ## cnt = stem ## max = 0;
313 616
314#define array_free(stem, idx) \ 617#define array_free(stem, idx) \
315 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 618 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
316 619
317/*****************************************************************************/ 620/*****************************************************************************/
318 621
319static void 622void noinline
623ev_feed_event (EV_P_ void *w, int revents)
624{
625 W w_ = (W)w;
626 int pri = ABSPRI (w_);
627
628 if (expect_false (w_->pending))
629 pendings [pri][w_->pending - 1].events |= revents;
630 else
631 {
632 w_->pending = ++pendingcnt [pri];
633 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
634 pendings [pri][w_->pending - 1].w = w_;
635 pendings [pri][w_->pending - 1].events = revents;
636 }
637}
638
639void inline_speed
640queue_events (EV_P_ W *events, int eventcnt, int type)
641{
642 int i;
643
644 for (i = 0; i < eventcnt; ++i)
645 ev_feed_event (EV_A_ events [i], type);
646}
647
648/*****************************************************************************/
649
650void inline_size
320anfds_init (ANFD *base, int count) 651anfds_init (ANFD *base, int count)
321{ 652{
322 while (count--) 653 while (count--)
323 { 654 {
324 base->head = 0; 655 base->head = 0;
… …
327 658
328 ++base; 659 ++base;
329 } 660 }
330} 661}
331 662
332void 663void inline_speed
333ev_feed_event (EV_P_ void *w, int revents)
334{
335 W w_ = (W)w;
336
337 if (w_->pending)
338 {
339 pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
340 return;
341 }
342
343 w_->pending = ++pendingcnt [ABSPRI (w_)];
344 array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], (void));
345 pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
346 pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
347}
348
349static void
350queue_events (EV_P_ W *events, int eventcnt, int type)
351{
352 int i;
353
354 for (i = 0; i < eventcnt; ++i)
355 ev_feed_event (EV_A_ events [i], type);
356}
357
358inline void
359fd_event (EV_P_ int fd, int revents) 664fd_event (EV_P_ int fd, int revents)
360{ 665{
361 ANFD *anfd = anfds + fd; 666 ANFD *anfd = anfds + fd;
362 struct ev_io *w; 667 ev_io *w;
363 668
364 for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) 669 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
365 { 670 {
366 int ev = w->events & revents; 671 int ev = w->events & revents;
367 672
368 if (ev) 673 if (ev)
369 ev_feed_event (EV_A_ (W)w, ev); 674 ev_feed_event (EV_A_ (W)w, ev);
… …
371} 676}
372 677
373void 678void
374ev_feed_fd_event (EV_P_ int fd, int revents) 679ev_feed_fd_event (EV_P_ int fd, int revents)
375{ 680{
681 if (fd >= 0 && fd < anfdmax)
376 fd_event (EV_A_ fd, revents); 682 fd_event (EV_A_ fd, revents);
377} 683}
378 684
379/*****************************************************************************/ 685void inline_size
380
381static void
382fd_reify (EV_P) 686fd_reify (EV_P)
383{ 687{
384 int i; 688 int i;
385 689
386 for (i = 0; i < fdchangecnt; ++i) 690 for (i = 0; i < fdchangecnt; ++i)
387 { 691 {
388 int fd = fdchanges [i]; 692 int fd = fdchanges [i];
389 ANFD *anfd = anfds + fd; 693 ANFD *anfd = anfds + fd;
390 struct ev_io *w; 694 ev_io *w;
391 695
392 int events = 0; 696 unsigned char events = 0;
393 697
394 for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) 698 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
395 events |= w->events; 699 events |= (unsigned char)w->events;
396 700
701#if EV_SELECT_IS_WINSOCKET
702 if (events)
703 {
704 unsigned long argp;
705 #ifdef EV_FD_TO_WIN32_HANDLE
706 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
707 #else
708 anfd->handle = _get_osfhandle (fd);
709 #endif
710 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
711 }
712#endif
713
714 {
715 unsigned char o_events = anfd->events;
716 unsigned char o_reify = anfd->reify;
717
397 anfd->reify = 0; 718 anfd->reify = 0;
398
399 method_modify (EV_A_ fd, anfd->events, events);
400 anfd->events = events; 719 anfd->events = events;
720
721 if (o_events != events || o_reify & EV_IOFDSET)
722 backend_modify (EV_A_ fd, o_events, events);
723 }
401 } 724 }
402 725
403 fdchangecnt = 0; 726 fdchangecnt = 0;
404} 727}
405 728
406static void 729void inline_size
407fd_change (EV_P_ int fd) 730fd_change (EV_P_ int fd, int flags)
408{ 731{
409 if (anfds [fd].reify) 732 unsigned char reify = anfds [fd].reify;
410 return;
411
412 anfds [fd].reify = 1; 733 anfds [fd].reify |= flags;
413 734
735 if (expect_true (!reify))
736 {
414 ++fdchangecnt; 737 ++fdchangecnt;
415 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void)); 738 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
416 fdchanges [fdchangecnt - 1] = fd; 739 fdchanges [fdchangecnt - 1] = fd;
740 }
417} 741}
418 742
419static void 743void inline_speed
420fd_kill (EV_P_ int fd) 744fd_kill (EV_P_ int fd)
421{ 745{
422 struct ev_io *w; 746 ev_io *w;
423 747
424 while ((w = (struct ev_io *)anfds [fd].head)) 748 while ((w = (ev_io *)anfds [fd].head))
425 { 749 {
426 ev_io_stop (EV_A_ w); 750 ev_io_stop (EV_A_ w);
427 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 751 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
428 } 752 }
429} 753}
430 754
431static int 755int inline_size
432fd_valid (int fd) 756fd_valid (int fd)
433{ 757{
434#ifdef WIN32 758#ifdef _WIN32
435 return !!win32_get_osfhandle (fd); 759 return _get_osfhandle (fd) != -1;
436#else 760#else
437 return fcntl (fd, F_GETFD) != -1; 761 return fcntl (fd, F_GETFD) != -1;
438#endif 762#endif
439} 763}
440 764
441/* called on EBADF to verify fds */ 765/* called on EBADF to verify fds */
442static void 766static void noinline
443fd_ebadf (EV_P) 767fd_ebadf (EV_P)
444{ 768{
445 int fd; 769 int fd;
446 770
447 for (fd = 0; fd < anfdmax; ++fd) 771 for (fd = 0; fd < anfdmax; ++fd)
… …
449 if (!fd_valid (fd) == -1 && errno == EBADF) 773 if (!fd_valid (fd) == -1 && errno == EBADF)
450 fd_kill (EV_A_ fd); 774 fd_kill (EV_A_ fd);
451} 775}
452 776
453/* called on ENOMEM in select/poll to kill some fds and retry */ 777/* called on ENOMEM in select/poll to kill some fds and retry */
454static void 778static void noinline
455fd_enomem (EV_P) 779fd_enomem (EV_P)
456{ 780{
457 int fd; 781 int fd;
458 782
459 for (fd = anfdmax; fd--; ) 783 for (fd = anfdmax; fd--; )
… …
462 fd_kill (EV_A_ fd); 786 fd_kill (EV_A_ fd);
463 return; 787 return;
464 } 788 }
465} 789}
466 790
467/* usually called after fork if method needs to re-arm all fds from scratch */ 791/* usually called after fork if backend needs to re-arm all fds from scratch */
468static void 792static void noinline
469fd_rearm_all (EV_P) 793fd_rearm_all (EV_P)
470{ 794{
471 int fd; 795 int fd;
472 796
473 /* this should be highly optimised to not do anything but set a flag */
474 for (fd = 0; fd < anfdmax; ++fd) 797 for (fd = 0; fd < anfdmax; ++fd)
475 if (anfds [fd].events) 798 if (anfds [fd].events)
476 { 799 {
477 anfds [fd].events = 0; 800 anfds [fd].events = 0;
478 fd_change (EV_A_ fd); 801 fd_change (EV_A_ fd, EV_IOFDSET | 1);
479 } 802 }
480} 803}
481 804
482/*****************************************************************************/ 805/*****************************************************************************/
483 806
807/*
808 * the heap functions want a real array index. array index 0 uis guaranteed to not
809 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
810 * the branching factor of the d-tree.
811 */
812
813/*
814 * at the moment we allow libev the luxury of two heaps,
815 * a small-code-size 2-heap one and a ~1.5kb larger 4-heap
816 * which is more cache-efficient.
817 * the difference is about 5% with 50000+ watchers.
818 */
819#if EV_USE_4HEAP
820
821#define DHEAP 4
822#define HEAP0 (DHEAP - 1) /* index of first element in heap */
823#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
824#define UPHEAP_DONE(p,k) ((p) == (k))
825
826/* away from the root */
827void inline_speed
828downheap (ANHE *heap, int N, int k)
829{
830 ANHE he = heap [k];
831 ANHE *E = heap + N + HEAP0;
832
833 for (;;)
834 {
835 ev_tstamp minat;
836 ANHE *minpos;
837 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
838
839 /* find minimum child */
840 if (expect_true (pos + DHEAP - 1 < E))
841 {
842 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
843 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
844 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
845 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
846 }
847 else if (pos < E)
848 {
849 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
850 if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
851 if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
852 if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
853 }
854 else
855 break;
856
857 if (ANHE_at (he) <= minat)
858 break;
859
860 heap [k] = *minpos;
861 ev_active (ANHE_w (*minpos)) = k;
862
863 k = minpos - heap;
864 }
865
866 heap [k] = he;
867 ev_active (ANHE_w (he)) = k;
868}
869
870#else /* 4HEAP */
871
872#define HEAP0 1
873#define HPARENT(k) ((k) >> 1)
874#define UPHEAP_DONE(p,k) (!(p))
875
876/* away from the root */
877void inline_speed
878downheap (ANHE *heap, int N, int k)
879{
880 ANHE he = heap [k];
881
882 for (;;)
883 {
884 int c = k << 1;
885
886 if (c > N + HEAP0 - 1)
887 break;
888
889 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
890 ? 1 : 0;
891
892 if (ANHE_at (he) <= ANHE_at (heap [c]))
893 break;
894
895 heap [k] = heap [c];
896 ev_active (ANHE_w (heap [k])) = k;
897
898 k = c;
899 }
900
901 heap [k] = he;
902 ev_active (ANHE_w (he)) = k;
903}
904#endif
905
906/* towards the root */
907void inline_speed
908upheap (ANHE *heap, int k)
909{
910 ANHE he = heap [k];
911
912 for (;;)
913 {
914 int p = HPARENT (k);
915
916 if (UPHEAP_DONE (p, k) || ANHE_at (heap [p]) <= ANHE_at (he))
917 break;
918
919 heap [k] = heap [p];
920 ev_active (ANHE_w (heap [k])) = k;
921 k = p;
922 }
923
924 heap [k] = he;
925 ev_active (ANHE_w (he)) = k;
926}
927
928void inline_size
929adjustheap (ANHE *heap, int N, int k)
930{
931 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k]))
932 upheap (heap, k);
933 else
934 downheap (heap, N, k);
935}
936
937/* rebuild the heap: this function is used only once and executed rarely */
938void inline_size
939reheap (ANHE *heap, int N)
940{
941 int i;
942 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
943 /* also, this is easy to implement and correct for both 2-heaps and 4-heaps */
944 for (i = 0; i < N; ++i)
945 upheap (heap, i + HEAP0);
946}
947
948#if EV_VERIFY
484static void 949static void
485upheap (WT *heap, int k) 950checkheap (ANHE *heap, int N)
486{ 951{
487 WT w = heap [k]; 952 int i;
488 953
489 while (k && heap [k >> 1]->at > w->at) 954 for (i = HEAP0; i < N + HEAP0; ++i)
490 {
491 heap [k] = heap [k >> 1];
492 ((W)heap [k])->active = k + 1;
493 k >>= 1;
494 } 955 {
495 956 assert (("active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
496 heap [k] = w; 957 assert (("heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
497 ((W)heap [k])->active = k + 1; 958 assert (("heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
498
499}
500
501static void
502downheap (WT *heap, int N, int k)
503{
504 WT w = heap [k];
505
506 while (k < (N >> 1))
507 { 959 }
508 int j = k << 1;
509
510 if (j + 1 < N && heap [j]->at > heap [j + 1]->at)
511 ++j;
512
513 if (w->at <= heap [j]->at)
514 break;
515
516 heap [k] = heap [j];
517 ((W)heap [k])->active = k + 1;
518 k = j;
519 }
520
521 heap [k] = w;
522 ((W)heap [k])->active = k + 1;
523} 960}
524 961#endif
525inline void
526adjustheap (WT *heap, int N, int k, ev_tstamp at)
527{
528 ev_tstamp old_at = heap [k]->at;
529 heap [k]->at = at;
530
531 if (old_at < at)
532 downheap (heap, N, k);
533 else
534 upheap (heap, k);
535}
536 962
537/*****************************************************************************/ 963/*****************************************************************************/
538 964
539typedef struct 965typedef struct
540{ 966{
541 WL head; 967 WL head;
542 sig_atomic_t volatile gotsig; 968 EV_ATOMIC_T gotsig;
543} ANSIG; 969} ANSIG;
544 970
545static ANSIG *signals; 971static ANSIG *signals;
546static int signalmax; 972static int signalmax;
547 973
548static int sigpipe [2]; 974static EV_ATOMIC_T gotsig;
549static sig_atomic_t volatile gotsig;
550static struct ev_io sigev;
551 975
552static void 976void inline_size
553signals_init (ANSIG *base, int count) 977signals_init (ANSIG *base, int count)
554{ 978{
555 while (count--) 979 while (count--)
556 { 980 {
557 base->head = 0; 981 base->head = 0;
… …
559 983
560 ++base; 984 ++base;
561 } 985 }
562} 986}
563 987
988/*****************************************************************************/
989
990void inline_speed
991fd_intern (int fd)
992{
993#ifdef _WIN32
994 int arg = 1;
995 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
996#else
997 fcntl (fd, F_SETFD, FD_CLOEXEC);
998 fcntl (fd, F_SETFL, O_NONBLOCK);
999#endif
1000}
1001
1002static void noinline
1003evpipe_init (EV_P)
1004{
1005 if (!ev_is_active (&pipeev))
1006 {
1007#if EV_USE_EVENTFD
1008 if ((evfd = eventfd (0, 0)) >= 0)
1009 {
1010 evpipe [0] = -1;
1011 fd_intern (evfd);
1012 ev_io_set (&pipeev, evfd, EV_READ);
1013 }
1014 else
1015#endif
1016 {
1017 while (pipe (evpipe))
1018 syserr ("(libev) error creating signal/async pipe");
1019
1020 fd_intern (evpipe [0]);
1021 fd_intern (evpipe [1]);
1022 ev_io_set (&pipeev, evpipe [0], EV_READ);
1023 }
1024
1025 ev_io_start (EV_A_ &pipeev);
1026 ev_unref (EV_A); /* watcher should not keep loop alive */
1027 }
1028}
1029
1030void inline_size
1031evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1032{
1033 if (!*flag)
1034 {
1035 int old_errno = errno; /* save errno because write might clobber it */
1036
1037 *flag = 1;
1038
1039#if EV_USE_EVENTFD
1040 if (evfd >= 0)
1041 {
1042 uint64_t counter = 1;
1043 write (evfd, &counter, sizeof (uint64_t));
1044 }
1045 else
1046#endif
1047 write (evpipe [1], &old_errno, 1);
1048
1049 errno = old_errno;
1050 }
1051}
1052
564static void 1053static void
1054pipecb (EV_P_ ev_io *iow, int revents)
1055{
1056#if EV_USE_EVENTFD
1057 if (evfd >= 0)
1058 {
1059 uint64_t counter;
1060 read (evfd, &counter, sizeof (uint64_t));
1061 }
1062 else
1063#endif
1064 {
1065 char dummy;
1066 read (evpipe [0], &dummy, 1);
1067 }
1068
1069 if (gotsig && ev_is_default_loop (EV_A))
1070 {
1071 int signum;
1072 gotsig = 0;
1073
1074 for (signum = signalmax; signum--; )
1075 if (signals [signum].gotsig)
1076 ev_feed_signal_event (EV_A_ signum + 1);
1077 }
1078
1079#if EV_ASYNC_ENABLE
1080 if (gotasync)
1081 {
1082 int i;
1083 gotasync = 0;
1084
1085 for (i = asynccnt; i--; )
1086 if (asyncs [i]->sent)
1087 {
1088 asyncs [i]->sent = 0;
1089 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1090 }
1091 }
1092#endif
1093}
1094
1095/*****************************************************************************/
1096
1097static void
565sighandler (int signum) 1098ev_sighandler (int signum)
566{ 1099{
1100#if EV_MULTIPLICITY
1101 struct ev_loop *loop = &default_loop_struct;
1102#endif
1103
567#if WIN32 1104#if _WIN32
568 signal (signum, sighandler); 1105 signal (signum, ev_sighandler);
569#endif 1106#endif
570 1107
571 signals [signum - 1].gotsig = 1; 1108 signals [signum - 1].gotsig = 1;
572 1109 evpipe_write (EV_A_ &gotsig);
573 if (!gotsig)
574 {
575 int old_errno = errno;
576 gotsig = 1;
577#ifdef WIN32
578 send (sigpipe [1], &signum, 1, MSG_DONTWAIT);
579#else
580 write (sigpipe [1], &signum, 1);
581#endif
582 errno = old_errno;
583 }
584} 1110}
585 1111
586void 1112void noinline
587ev_feed_signal_event (EV_P_ int signum) 1113ev_feed_signal_event (EV_P_ int signum)
588{ 1114{
589 WL w; 1115 WL w;
590 1116
591#if EV_MULTIPLICITY 1117#if EV_MULTIPLICITY
592 assert (("feeding signal events is only supported in the default loop", loop == default_loop)); 1118 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
593#endif 1119#endif
594 1120
595 --signum; 1121 --signum;
596 1122
597 if (signum < 0 || signum >= signalmax) 1123 if (signum < 0 || signum >= signalmax)
… …
601 1127
602 for (w = signals [signum].head; w; w = w->next) 1128 for (w = signals [signum].head; w; w = w->next)
603 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 1129 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
604} 1130}
605 1131
606static void
607sigcb (EV_P_ struct ev_io *iow, int revents)
608{
609 int signum;
610
611#ifdef WIN32
612 recv (sigpipe [0], &revents, 1, MSG_DONTWAIT);
613#else
614 read (sigpipe [0], &revents, 1);
615#endif
616 gotsig = 0;
617
618 for (signum = signalmax; signum--; )
619 if (signals [signum].gotsig)
620 ev_feed_signal_event (EV_A_ signum + 1);
621}
622
623static void
624siginit (EV_P)
625{
626#ifndef WIN32
627 fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);
628 fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
629
630 /* rather than sort out wether we really need nb, set it */
631 fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
632 fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
633#endif
634
635 ev_io_set (&sigev, sigpipe [0], EV_READ);
636 ev_io_start (EV_A_ &sigev);
637 ev_unref (EV_A); /* child watcher should not keep loop alive */
638}
639
640/*****************************************************************************/ 1132/*****************************************************************************/
641 1133
642static struct ev_child *childs [PID_HASHSIZE]; 1134static WL childs [EV_PID_HASHSIZE];
643 1135
644#ifndef WIN32 1136#ifndef _WIN32
645 1137
646static struct ev_signal childev; 1138static ev_signal childev;
1139
1140#ifndef WIFCONTINUED
1141# define WIFCONTINUED(status) 0
1142#endif
1143
1144void inline_speed
1145child_reap (EV_P_ int chain, int pid, int status)
1146{
1147 ev_child *w;
1148 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1149
1150 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
1151 {
1152 if ((w->pid == pid || !w->pid)
1153 && (!traced || (w->flags & 1)))
1154 {
1155 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
1156 w->rpid = pid;
1157 w->rstatus = status;
1158 ev_feed_event (EV_A_ (W)w, EV_CHILD);
1159 }
1160 }
1161}
647 1162
648#ifndef WCONTINUED 1163#ifndef WCONTINUED
649# define WCONTINUED 0 1164# define WCONTINUED 0
650#endif 1165#endif
651 1166
652static void 1167static void
653child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
654{
655 struct ev_child *w;
656
657 for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
658 if (w->pid == pid || !w->pid)
659 {
660 ev_priority (w) = ev_priority (sw); /* need to do it *now* */
661 w->rpid = pid;
662 w->rstatus = status;
663 ev_feed_event (EV_A_ (W)w, EV_CHILD);
664 }
665}
666
667static void
668childcb (EV_P_ struct ev_signal *sw, int revents) 1168childcb (EV_P_ ev_signal *sw, int revents)
669{ 1169{
670 int pid, status; 1170 int pid, status;
671 1171
1172 /* some systems define WCONTINUED but then fail to support it (linux 2.4) */
672 if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) 1173 if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
673 { 1174 if (!WCONTINUED
1175 || errno != EINVAL
1176 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
1177 return;
1178
674 /* make sure we are called again until all childs have been reaped */ 1179 /* make sure we are called again until all children have been reaped */
1180 /* we need to do it this way so that the callback gets called before we continue */
675 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 1181 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
676 1182
677 child_reap (EV_A_ sw, pid, pid, status); 1183 child_reap (EV_A_ pid, pid, status);
1184 if (EV_PID_HASHSIZE > 1)
678 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */ 1185 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
679 }
680} 1186}
681 1187
682#endif 1188#endif
683 1189
684/*****************************************************************************/ 1190/*****************************************************************************/
685 1191
1192#if EV_USE_PORT
1193# include "ev_port.c"
1194#endif
686#if EV_USE_KQUEUE 1195#if EV_USE_KQUEUE
687# include "ev_kqueue.c" 1196# include "ev_kqueue.c"
688#endif 1197#endif
689#if EV_USE_EPOLL 1198#if EV_USE_EPOLL
690# include "ev_epoll.c" 1199# include "ev_epoll.c"
… …
707{ 1216{
708 return EV_VERSION_MINOR; 1217 return EV_VERSION_MINOR;
709} 1218}
710 1219
711/* return true if we are running with elevated privileges and should ignore env variables */ 1220/* return true if we are running with elevated privileges and should ignore env variables */
712static int 1221int inline_size
713enable_secure (void) 1222enable_secure (void)
714{ 1223{
715#ifdef WIN32 1224#ifdef _WIN32
716 return 0; 1225 return 0;
717#else 1226#else
718 return getuid () != geteuid () 1227 return getuid () != geteuid ()
719 || getgid () != getegid (); 1228 || getgid () != getegid ();
720#endif 1229#endif
721} 1230}
722 1231
723int 1232unsigned int
724ev_method (EV_P) 1233ev_supported_backends (void)
725{ 1234{
726 return method; 1235 unsigned int flags = 0;
727}
728 1236
729static void 1237 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
730loop_init (EV_P_ int methods) 1238 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
1239 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
1240 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
1241 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1242
1243 return flags;
1244}
1245
1246unsigned int
1247ev_recommended_backends (void)
731{ 1248{
732 if (!method) 1249 unsigned int flags = ev_supported_backends ();
1250
1251#ifndef __NetBSD__
1252 /* kqueue is borked on everything but netbsd apparently */
1253 /* it usually doesn't work correctly on anything but sockets and pipes */
1254 flags &= ~EVBACKEND_KQUEUE;
1255#endif
1256#ifdef __APPLE__
1257 // flags &= ~EVBACKEND_KQUEUE; for documentation
1258 flags &= ~EVBACKEND_POLL;
1259#endif
1260
1261 return flags;
1262}
1263
1264unsigned int
1265ev_embeddable_backends (void)
1266{
1267 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1268
1269 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1270 /* please fix it and tell me how to detect the fix */
1271 flags &= ~EVBACKEND_EPOLL;
1272
1273 return flags;
1274}
1275
1276unsigned int
1277ev_backend (EV_P)
1278{
1279 return backend;
1280}
1281
1282unsigned int
1283ev_loop_count (EV_P)
1284{
1285 return loop_count;
1286}
1287
1288void
1289ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1290{
1291 io_blocktime = interval;
1292}
1293
1294void
1295ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1296{
1297 timeout_blocktime = interval;
1298}
1299
1300static void noinline
1301loop_init (EV_P_ unsigned int flags)
1302{
1303 if (!backend)
733 { 1304 {
734#if EV_USE_MONOTONIC 1305#if EV_USE_MONOTONIC
735 { 1306 {
736 struct timespec ts; 1307 struct timespec ts;
737 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1308 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
738 have_monotonic = 1; 1309 have_monotonic = 1;
739 } 1310 }
740#endif 1311#endif
741 1312
742 ev_rt_now = ev_time (); 1313 ev_rt_now = ev_time ();
743 mn_now = get_clock (); 1314 mn_now = get_clock ();
744 now_floor = mn_now; 1315 now_floor = mn_now;
745 rtmn_diff = ev_rt_now - mn_now; 1316 rtmn_diff = ev_rt_now - mn_now;
746 1317
747 if (methods == EVMETHOD_AUTO) 1318 io_blocktime = 0.;
748 if (!enable_secure () && getenv ("LIBEV_METHODS")) 1319 timeout_blocktime = 0.;
1320 backend = 0;
1321 backend_fd = -1;
1322 gotasync = 0;
1323#if EV_USE_INOTIFY
1324 fs_fd = -2;
1325#endif
1326
1327 /* pid check not overridable via env */
1328#ifndef _WIN32
1329 if (flags & EVFLAG_FORKCHECK)
1330 curpid = getpid ();
1331#endif
1332
1333 if (!(flags & EVFLAG_NOENV)
1334 && !enable_secure ()
1335 && getenv ("LIBEV_FLAGS"))
749 methods = atoi (getenv ("LIBEV_METHODS")); 1336 flags = atoi (getenv ("LIBEV_FLAGS"));
750 else
751 methods = EVMETHOD_ANY;
752 1337
753 method = 0; 1338 if (!(flags & 0x0000ffffU))
754#if EV_USE_WIN32 1339 flags |= ev_recommended_backends ();
755 if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods); 1340
1341#if EV_USE_PORT
1342 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
756#endif 1343#endif
757#if EV_USE_KQUEUE 1344#if EV_USE_KQUEUE
758 if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods); 1345 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
759#endif 1346#endif
760#if EV_USE_EPOLL 1347#if EV_USE_EPOLL
761 if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods); 1348 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
762#endif 1349#endif
763#if EV_USE_POLL 1350#if EV_USE_POLL
764 if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods); 1351 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
765#endif 1352#endif
766#if EV_USE_SELECT 1353#if EV_USE_SELECT
767 if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods); 1354 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
768#endif 1355#endif
769 1356
770 ev_init (&sigev, sigcb); 1357 ev_init (&pipeev, pipecb);
771 ev_set_priority (&sigev, EV_MAXPRI); 1358 ev_set_priority (&pipeev, EV_MAXPRI);
772 } 1359 }
773} 1360}
774 1361
775void 1362static void noinline
776loop_destroy (EV_P) 1363loop_destroy (EV_P)
777{ 1364{
778 int i; 1365 int i;
779 1366
1367 if (ev_is_active (&pipeev))
1368 {
1369 ev_ref (EV_A); /* signal watcher */
1370 ev_io_stop (EV_A_ &pipeev);
1371
1372#if EV_USE_EVENTFD
1373 if (evfd >= 0)
1374 close (evfd);
1375#endif
1376
1377 if (evpipe [0] >= 0)
1378 {
1379 close (evpipe [0]);
1380 close (evpipe [1]);
1381 }
1382 }
1383
780#if EV_USE_WIN32 1384#if EV_USE_INOTIFY
781 if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A); 1385 if (fs_fd >= 0)
1386 close (fs_fd);
1387#endif
1388
1389 if (backend_fd >= 0)
1390 close (backend_fd);
1391
1392#if EV_USE_PORT
1393 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
782#endif 1394#endif
783#if EV_USE_KQUEUE 1395#if EV_USE_KQUEUE
784 if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A); 1396 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
785#endif 1397#endif
786#if EV_USE_EPOLL 1398#if EV_USE_EPOLL
787 if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A); 1399 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
788#endif 1400#endif
789#if EV_USE_POLL 1401#if EV_USE_POLL
790 if (method == EVMETHOD_POLL ) poll_destroy (EV_A); 1402 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
791#endif 1403#endif
792#if EV_USE_SELECT 1404#if EV_USE_SELECT
793 if (method == EVMETHOD_SELECT) select_destroy (EV_A); 1405 if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
794#endif 1406#endif
795 1407
796 for (i = NUMPRI; i--; ) 1408 for (i = NUMPRI; i--; )
1409 {
797 array_free (pending, [i]); 1410 array_free (pending, [i]);
1411#if EV_IDLE_ENABLE
1412 array_free (idle, [i]);
1413#endif
1414 }
1415
1416 ev_free (anfds); anfdmax = 0;
798 1417
799 /* have to use the microsoft-never-gets-it-right macro */ 1418 /* have to use the microsoft-never-gets-it-right macro */
800 array_free_microshit (fdchange); 1419 array_free (fdchange, EMPTY);
801 array_free_microshit (timer); 1420 array_free (timer, EMPTY);
802 array_free_microshit (periodic); 1421#if EV_PERIODIC_ENABLE
803 array_free_microshit (idle); 1422 array_free (periodic, EMPTY);
804 array_free_microshit (prepare); 1423#endif
805 array_free_microshit (check); 1424#if EV_FORK_ENABLE
1425 array_free (fork, EMPTY);
1426#endif
1427 array_free (prepare, EMPTY);
1428 array_free (check, EMPTY);
1429#if EV_ASYNC_ENABLE
1430 array_free (async, EMPTY);
1431#endif
806 1432
807 method = 0; 1433 backend = 0;
808} 1434}
809 1435
1436#if EV_USE_INOTIFY
1437void inline_size infy_fork (EV_P);
1438#endif
1439
1440void inline_size
1441loop_fork (EV_P)
1442{
1443#if EV_USE_PORT
1444 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1445#endif
1446#if EV_USE_KQUEUE
1447 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
1448#endif
1449#if EV_USE_EPOLL
1450 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
1451#endif
1452#if EV_USE_INOTIFY
1453 infy_fork (EV_A);
1454#endif
1455
1456 if (ev_is_active (&pipeev))
1457 {
1458 /* this "locks" the handlers against writing to the pipe */
1459 /* while we modify the fd vars */
1460 gotsig = 1;
1461#if EV_ASYNC_ENABLE
1462 gotasync = 1;
1463#endif
1464
1465 ev_ref (EV_A);
1466 ev_io_stop (EV_A_ &pipeev);
1467
1468#if EV_USE_EVENTFD
1469 if (evfd >= 0)
1470 close (evfd);
1471#endif
1472
1473 if (evpipe [0] >= 0)
1474 {
1475 close (evpipe [0]);
1476 close (evpipe [1]);
1477 }
1478
1479 evpipe_init (EV_A);
1480 /* now iterate over everything, in case we missed something */
1481 pipecb (EV_A_ &pipeev, EV_READ);
1482 }
1483
1484 postfork = 0;
1485}
1486
1487#if EV_MULTIPLICITY
1488
1489struct ev_loop *
1490ev_loop_new (unsigned int flags)
1491{
1492 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1493
1494 memset (loop, 0, sizeof (struct ev_loop));
1495
1496 loop_init (EV_A_ flags);
1497
1498 if (ev_backend (EV_A))
1499 return loop;
1500
1501 return 0;
1502}
1503
1504void
1505ev_loop_destroy (EV_P)
1506{
1507 loop_destroy (EV_A);
1508 ev_free (loop);
1509}
1510
1511void
1512ev_loop_fork (EV_P)
1513{
1514 postfork = 1; /* must be in line with ev_default_fork */
1515}
1516
1517#if EV_VERIFY
810static void 1518static void
811loop_fork (EV_P) 1519array_check (W **ws, int cnt)
812{ 1520{
813#if EV_USE_EPOLL 1521 while (cnt--)
814 if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A); 1522 assert (("active index mismatch", ev_active (ws [cnt]) == cnt + 1));
815#endif
816#if EV_USE_KQUEUE
817 if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
818#endif
819
820 if (ev_is_active (&sigev))
821 {
822 /* default loop */
823
824 ev_ref (EV_A);
825 ev_io_stop (EV_A_ &sigev);
826 close (sigpipe [0]);
827 close (sigpipe [1]);
828
829 while (pipe (sigpipe))
830 syserr ("(libev) error creating pipe");
831
832 siginit (EV_A);
833 }
834
835 postfork = 0;
836} 1523}
1524#endif
1525
1526void
1527ev_loop_verify (EV_P)
1528{
1529#if EV_VERIFY
1530 int i;
1531
1532 checkheap (timers, timercnt);
1533#if EV_PERIODIC_ENABLE
1534 checkheap (periodics, periodiccnt);
1535#endif
1536
1537#if EV_IDLE_ENABLE
1538 for (i = NUMPRI; i--; )
1539 array_check ((W **)idles [i], idlecnt [i]);
1540#endif
1541#if EV_FORK_ENABLE
1542 array_check ((W **)forks, forkcnt);
1543#endif
1544#if EV_ASYNC_ENABLE
1545 array_check ((W **)asyncs, asynccnt);
1546#endif
1547 array_check ((W **)prepares, preparecnt);
1548 array_check ((W **)checks, checkcnt);
1549#endif
1550}
1551
1552#endif /* multiplicity */
837 1553
838#if EV_MULTIPLICITY 1554#if EV_MULTIPLICITY
839struct ev_loop * 1555struct ev_loop *
840ev_loop_new (int methods) 1556ev_default_loop_init (unsigned int flags)
841{
842 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
843
844 memset (loop, 0, sizeof (struct ev_loop));
845
846 loop_init (EV_A_ methods);
847
848 if (ev_method (EV_A))
849 return loop;
850
851 return 0;
852}
853
854void
855ev_loop_destroy (EV_P)
856{
857 loop_destroy (EV_A);
858 ev_free (loop);
859}
860
861void
862ev_loop_fork (EV_P)
863{
864 postfork = 1;
865}
866
867#endif
868
869#if EV_MULTIPLICITY
870struct ev_loop *
871#else 1557#else
872int 1558int
1559ev_default_loop (unsigned int flags)
873#endif 1560#endif
874ev_default_loop (int methods)
875{ 1561{
876 if (sigpipe [0] == sigpipe [1])
877 if (pipe (sigpipe))
878 return 0;
879
880 if (!default_loop) 1562 if (!ev_default_loop_ptr)
881 { 1563 {
882#if EV_MULTIPLICITY 1564#if EV_MULTIPLICITY
883 struct ev_loop *loop = default_loop = &default_loop_struct; 1565 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
884#else 1566#else
885 default_loop = 1; 1567 ev_default_loop_ptr = 1;
886#endif 1568#endif
887 1569
888 loop_init (EV_A_ methods); 1570 loop_init (EV_A_ flags);
889 1571
890 if (ev_method (EV_A)) 1572 if (ev_backend (EV_A))
891 { 1573 {
892 siginit (EV_A);
893
894#ifndef WIN32 1574#ifndef _WIN32
895 ev_signal_init (&childev, childcb, SIGCHLD); 1575 ev_signal_init (&childev, childcb, SIGCHLD);
896 ev_set_priority (&childev, EV_MAXPRI); 1576 ev_set_priority (&childev, EV_MAXPRI);
897 ev_signal_start (EV_A_ &childev); 1577 ev_signal_start (EV_A_ &childev);
898 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1578 ev_unref (EV_A); /* child watcher should not keep loop alive */
899#endif 1579#endif
900 } 1580 }
901 else 1581 else
902 default_loop = 0; 1582 ev_default_loop_ptr = 0;
903 } 1583 }
904 1584
905 return default_loop; 1585 return ev_default_loop_ptr;
906} 1586}
907 1587
908void 1588void
909ev_default_destroy (void) 1589ev_default_destroy (void)
910{ 1590{
911#if EV_MULTIPLICITY 1591#if EV_MULTIPLICITY
912 struct ev_loop *loop = default_loop; 1592 struct ev_loop *loop = ev_default_loop_ptr;
913#endif 1593#endif
914 1594
915#ifndef WIN32 1595#ifndef _WIN32
916 ev_ref (EV_A); /* child watcher */ 1596 ev_ref (EV_A); /* child watcher */
917 ev_signal_stop (EV_A_ &childev); 1597 ev_signal_stop (EV_A_ &childev);
918#endif 1598#endif
919 1599
920 ev_ref (EV_A); /* signal watcher */
921 ev_io_stop (EV_A_ &sigev);
922
923 close (sigpipe [0]); sigpipe [0] = 0;
924 close (sigpipe [1]); sigpipe [1] = 0;
925
926 loop_destroy (EV_A); 1600 loop_destroy (EV_A);
927} 1601}
928 1602
929void 1603void
930ev_default_fork (void) 1604ev_default_fork (void)
931{ 1605{
932#if EV_MULTIPLICITY 1606#if EV_MULTIPLICITY
933 struct ev_loop *loop = default_loop; 1607 struct ev_loop *loop = ev_default_loop_ptr;
934#endif 1608#endif
935 1609
936 if (method) 1610 if (backend)
937 postfork = 1; 1611 postfork = 1; /* must be in line with ev_loop_fork */
938} 1612}
939 1613
940/*****************************************************************************/ 1614/*****************************************************************************/
941 1615
942static int 1616void
943any_pending (EV_P) 1617ev_invoke (EV_P_ void *w, int revents)
944{ 1618{
945 int pri; 1619 EV_CB_INVOKE ((W)w, revents);
946
947 for (pri = NUMPRI; pri--; )
948 if (pendingcnt [pri])
949 return 1;
950
951 return 0;
952} 1620}
953 1621
954static void 1622void inline_speed
955call_pending (EV_P) 1623call_pending (EV_P)
956{ 1624{
957 int pri; 1625 int pri;
958 1626
959 for (pri = NUMPRI; pri--; ) 1627 for (pri = NUMPRI; pri--; )
960 while (pendingcnt [pri]) 1628 while (pendingcnt [pri])
961 { 1629 {
962 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 1630 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
963 1631
964 if (p->w) 1632 if (expect_true (p->w))
965 { 1633 {
1634 /*assert (("non-pending watcher on pending list", p->w->pending));*/
1635
966 p->w->pending = 0; 1636 p->w->pending = 0;
967 EV_CB_INVOKE (p->w, p->events); 1637 EV_CB_INVOKE (p->w, p->events);
1638 EV_FREQUENT_CHECK;
968 } 1639 }
969 } 1640 }
970} 1641}
971 1642
972static void 1643#if EV_IDLE_ENABLE
1644void inline_size
1645idle_reify (EV_P)
1646{
1647 if (expect_false (idleall))
1648 {
1649 int pri;
1650
1651 for (pri = NUMPRI; pri--; )
1652 {
1653 if (pendingcnt [pri])
1654 break;
1655
1656 if (idlecnt [pri])
1657 {
1658 queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
1659 break;
1660 }
1661 }
1662 }
1663}
1664#endif
1665
1666void inline_size
973timers_reify (EV_P) 1667timers_reify (EV_P)
974{ 1668{
1669 EV_FREQUENT_CHECK;
1670
975 while (timercnt && ((WT)timers [0])->at <= mn_now) 1671 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
976 { 1672 {
977 struct ev_timer *w = timers [0]; 1673 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
978 1674
979 assert (("inactive timer on timer heap detected", ev_is_active (w))); 1675 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
980 1676
981 /* first reschedule or stop timer */ 1677 /* first reschedule or stop timer */
982 if (w->repeat) 1678 if (w->repeat)
983 { 1679 {
1680 ev_at (w) += w->repeat;
1681 if (ev_at (w) < mn_now)
1682 ev_at (w) = mn_now;
1683
984 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 1684 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
985 ((WT)w)->at = mn_now + w->repeat; 1685
1686 ANHE_at_cache (timers [HEAP0]);
986 downheap ((WT *)timers, timercnt, 0); 1687 downheap (timers, timercnt, HEAP0);
987 } 1688 }
988 else 1689 else
989 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ 1690 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
990 1691
1692 EV_FREQUENT_CHECK;
991 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); 1693 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
992 } 1694 }
993} 1695}
994 1696
995static void 1697#if EV_PERIODIC_ENABLE
1698void inline_size
996periodics_reify (EV_P) 1699periodics_reify (EV_P)
997{ 1700{
1701 EV_FREQUENT_CHECK;
1702
998 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now) 1703 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
999 { 1704 {
1000 struct ev_periodic *w = periodics [0]; 1705 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
1001 1706
1002 assert (("inactive timer on periodic heap detected", ev_is_active (w))); 1707 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1003 1708
1004 /* first reschedule or stop timer */ 1709 /* first reschedule or stop timer */
1005 if (w->reschedule_cb) 1710 if (w->reschedule_cb)
1006 { 1711 {
1007 ev_tstamp at = ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001); 1712 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1008 1713
1009 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now)); 1714 assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
1715
1716 ANHE_at_cache (periodics [HEAP0]);
1010 downheap ((WT *)periodics, periodiccnt, 0); 1717 downheap (periodics, periodiccnt, HEAP0);
1011 } 1718 }
1012 else if (w->interval) 1719 else if (w->interval)
1013 { 1720 {
1014 ((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval; 1721 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1015 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now)); 1722 /* if next trigger time is not sufficiently in the future, put it there */
1723 /* this might happen because of floating point inexactness */
1724 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1725 {
1726 ev_at (w) += w->interval;
1727
1728 /* if interval is unreasonably low we might still have a time in the past */
1729 /* so correct this. this will make the periodic very inexact, but the user */
1730 /* has effectively asked to get triggered more often than possible */
1731 if (ev_at (w) < ev_rt_now)
1732 ev_at (w) = ev_rt_now;
1733 }
1734
1735 ANHE_at_cache (periodics [HEAP0]);
1016 downheap ((WT *)periodics, periodiccnt, 0); 1736 downheap (periodics, periodiccnt, HEAP0);
1017 } 1737 }
1018 else 1738 else
1019 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 1739 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1020 1740
1741 EV_FREQUENT_CHECK;
1021 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 1742 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1022 } 1743 }
1023} 1744}
1024 1745
1025static void 1746static void noinline
1026periodics_reschedule (EV_P) 1747periodics_reschedule (EV_P)
1027{ 1748{
1028 int i; 1749 int i;
1029 1750
1030 /* adjust periodics after time jump */ 1751 /* adjust periodics after time jump */
1031 for (i = 0; i < periodiccnt; ++i) 1752 for (i = HEAP0; i < periodiccnt + HEAP0; ++i)
1032 { 1753 {
1033 struct ev_periodic *w = periodics [i]; 1754 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1034 1755
1035 if (w->reschedule_cb) 1756 if (w->reschedule_cb)
1036 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 1757 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1037 else if (w->interval) 1758 else if (w->interval)
1038 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval; 1759 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1760
1761 ANHE_at_cache (periodics [i]);
1762 }
1763
1764 reheap (periodics, periodiccnt);
1765}
1766#endif
1767
1768void inline_speed
1769time_update (EV_P_ ev_tstamp max_block)
1770{
1771 int i;
1772
1773#if EV_USE_MONOTONIC
1774 if (expect_true (have_monotonic))
1039 } 1775 {
1776 ev_tstamp odiff = rtmn_diff;
1040 1777
1041 /* now rebuild the heap */
1042 for (i = periodiccnt >> 1; i--; )
1043 downheap ((WT *)periodics, periodiccnt, i);
1044}
1045
1046inline int
1047time_update_monotonic (EV_P)
1048{
1049 mn_now = get_clock (); 1778 mn_now = get_clock ();
1050 1779
1780 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
1781 /* interpolate in the meantime */
1051 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 1782 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1052 { 1783 {
1053 ev_rt_now = rtmn_diff + mn_now; 1784 ev_rt_now = rtmn_diff + mn_now;
1054 return 0; 1785 return;
1055 } 1786 }
1056 else 1787
1057 {
1058 now_floor = mn_now; 1788 now_floor = mn_now;
1059 ev_rt_now = ev_time (); 1789 ev_rt_now = ev_time ();
1060 return 1;
1061 }
1062}
1063 1790
1064static void 1791 /* loop a few times, before making important decisions.
1065time_update (EV_P) 1792 * on the choice of "4": one iteration isn't enough,
1066{ 1793 * in case we get preempted during the calls to
1067 int i; 1794 * ev_time and get_clock. a second call is almost guaranteed
1068 1795 * to succeed in that case, though. and looping a few more times
1069#if EV_USE_MONOTONIC 1796 * doesn't hurt either as we only do this on time-jumps or
1070 if (expect_true (have_monotonic)) 1797 * in the unlikely event of having been preempted here.
1071 { 1798 */
1072 if (time_update_monotonic (EV_A)) 1799 for (i = 4; --i; )
1073 { 1800 {
1074 ev_tstamp odiff = rtmn_diff; 1801 rtmn_diff = ev_rt_now - mn_now;
1075 1802
1076 for (i = 4; --i; ) /* loop a few times, before making important decisions */ 1803 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP))
1804 return; /* all is well */
1805
1806 ev_rt_now = ev_time ();
1807 mn_now = get_clock ();
1808 now_floor = mn_now;
1809 }
1810
1811# if EV_PERIODIC_ENABLE
1812 periodics_reschedule (EV_A);
1813# endif
1814 /* no timer adjustment, as the monotonic clock doesn't jump */
1815 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1816 }
1817 else
1818#endif
1819 {
1820 ev_rt_now = ev_time ();
1821
1822 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1823 {
1824#if EV_PERIODIC_ENABLE
1825 periodics_reschedule (EV_A);
1826#endif
1827 /* adjust timers. this is easy, as the offset is the same for all of them */
1828 for (i = 0; i < timercnt; ++i)
1077 { 1829 {
1078 rtmn_diff = ev_rt_now - mn_now; 1830 ANHE *he = timers + i + HEAP0;
1079 1831 ANHE_w (*he)->at += ev_rt_now - mn_now;
1080 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) 1832 ANHE_at_cache (*he);
1081 return; /* all is well */
1082
1083 ev_rt_now = ev_time ();
1084 mn_now = get_clock ();
1085 now_floor = mn_now;
1086 } 1833 }
1087
1088 periodics_reschedule (EV_A);
1089 /* no timer adjustment, as the monotonic clock doesn't jump */
1090 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1091 } 1834 }
1092 }
1093 else
1094#endif
1095 {
1096 ev_rt_now = ev_time ();
1097
1098 if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
1099 {
1100 periodics_reschedule (EV_A);
1101
1102 /* adjust timers. this is easy, as the offset is the same for all */
1103 for (i = 0; i < timercnt; ++i)
1104 ((WT)timers [i])->at += ev_rt_now - mn_now;
1105 }
1106 1835
1107 mn_now = ev_rt_now; 1836 mn_now = ev_rt_now;
1108 } 1837 }
1109} 1838}
1110 1839
… …
1123static int loop_done; 1852static int loop_done;
1124 1853
1125void 1854void
1126ev_loop (EV_P_ int flags) 1855ev_loop (EV_P_ int flags)
1127{ 1856{
1128 double block; 1857 loop_done = EVUNLOOP_CANCEL;
1129 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0; 1858
1859 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
1130 1860
1131 do 1861 do
1132 { 1862 {
1863#if EV_VERIFY >= 2
1864 ev_loop_verify (EV_A);
1865#endif
1866
1867#ifndef _WIN32
1868 if (expect_false (curpid)) /* penalise the forking check even more */
1869 if (expect_false (getpid () != curpid))
1870 {
1871 curpid = getpid ();
1872 postfork = 1;
1873 }
1874#endif
1875
1876#if EV_FORK_ENABLE
1877 /* we might have forked, so queue fork handlers */
1878 if (expect_false (postfork))
1879 if (forkcnt)
1880 {
1881 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1882 call_pending (EV_A);
1883 }
1884#endif
1885
1133 /* queue check watchers (and execute them) */ 1886 /* queue prepare watchers (and execute them) */
1134 if (expect_false (preparecnt)) 1887 if (expect_false (preparecnt))
1135 { 1888 {
1136 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 1889 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1137 call_pending (EV_A); 1890 call_pending (EV_A);
1138 } 1891 }
1139 1892
1893 if (expect_false (!activecnt))
1894 break;
1895
1140 /* we might have forked, so reify kernel state if necessary */ 1896 /* we might have forked, so reify kernel state if necessary */
1141 if (expect_false (postfork)) 1897 if (expect_false (postfork))
1142 loop_fork (EV_A); 1898 loop_fork (EV_A);
1143 1899
1144 /* update fd-related kernel structures */ 1900 /* update fd-related kernel structures */
1145 fd_reify (EV_A); 1901 fd_reify (EV_A);
1146 1902
1147 /* calculate blocking time */ 1903 /* calculate blocking time */
1904 {
1905 ev_tstamp waittime = 0.;
1906 ev_tstamp sleeptime = 0.;
1148 1907
1149 /* we only need this for !monotonic clock or timers, but as we basically 1908 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1150 always have timers, we just calculate it always */
1151#if EV_USE_MONOTONIC
1152 if (expect_true (have_monotonic))
1153 time_update_monotonic (EV_A);
1154 else
1155#endif
1156 { 1909 {
1157 ev_rt_now = ev_time (); 1910 /* update time to cancel out callback processing overhead */
1158 mn_now = ev_rt_now; 1911 time_update (EV_A_ 1e100);
1159 }
1160 1912
1161 if (flags & EVLOOP_NONBLOCK || idlecnt)
1162 block = 0.;
1163 else
1164 {
1165 block = MAX_BLOCKTIME; 1913 waittime = MAX_BLOCKTIME;
1166 1914
1167 if (timercnt) 1915 if (timercnt)
1168 { 1916 {
1169 ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge; 1917 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
1170 if (block > to) block = to; 1918 if (waittime > to) waittime = to;
1171 } 1919 }
1172 1920
1921#if EV_PERIODIC_ENABLE
1173 if (periodiccnt) 1922 if (periodiccnt)
1174 { 1923 {
1175 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge; 1924 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1176 if (block > to) block = to; 1925 if (waittime > to) waittime = to;
1177 } 1926 }
1927#endif
1178 1928
1179 if (block < 0.) block = 0.; 1929 if (expect_false (waittime < timeout_blocktime))
1930 waittime = timeout_blocktime;
1931
1932 sleeptime = waittime - backend_fudge;
1933
1934 if (expect_true (sleeptime > io_blocktime))
1935 sleeptime = io_blocktime;
1936
1937 if (sleeptime)
1938 {
1939 ev_sleep (sleeptime);
1940 waittime -= sleeptime;
1941 }
1180 } 1942 }
1181 1943
1182 method_poll (EV_A_ block); 1944 ++loop_count;
1945 backend_poll (EV_A_ waittime);
1183 1946
1184 /* update ev_rt_now, do magic */ 1947 /* update ev_rt_now, do magic */
1185 time_update (EV_A); 1948 time_update (EV_A_ waittime + sleeptime);
1949 }
1186 1950
1187 /* queue pending timers and reschedule them */ 1951 /* queue pending timers and reschedule them */
1188 timers_reify (EV_A); /* relative timers called last */ 1952 timers_reify (EV_A); /* relative timers called last */
1953#if EV_PERIODIC_ENABLE
1189 periodics_reify (EV_A); /* absolute timers called first */ 1954 periodics_reify (EV_A); /* absolute timers called first */
1955#endif
1190 1956
1957#if EV_IDLE_ENABLE
1191 /* queue idle watchers unless io or timers are pending */ 1958 /* queue idle watchers unless other events are pending */
1192 if (idlecnt && !any_pending (EV_A)) 1959 idle_reify (EV_A);
1193 queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); 1960#endif
1194 1961
1195 /* queue check watchers, to be executed first */ 1962 /* queue check watchers, to be executed first */
1196 if (checkcnt) 1963 if (expect_false (checkcnt))
1197 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 1964 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1198 1965
1199 call_pending (EV_A); 1966 call_pending (EV_A);
1200 } 1967 }
1201 while (activecnt && !loop_done); 1968 while (expect_true (
1969 activecnt
1970 && !loop_done
1971 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
1972 ));
1202 1973
1203 if (loop_done != 2) 1974 if (loop_done == EVUNLOOP_ONE)
1204 loop_done = 0; 1975 loop_done = EVUNLOOP_CANCEL;
1205} 1976}
1206 1977
1207void 1978void
1208ev_unloop (EV_P_ int how) 1979ev_unloop (EV_P_ int how)
1209{ 1980{
1210 loop_done = how; 1981 loop_done = how;
1211} 1982}
1212 1983
1213/*****************************************************************************/ 1984/*****************************************************************************/
1214 1985
1215inline void 1986void inline_size
1216wlist_add (WL *head, WL elem) 1987wlist_add (WL *head, WL elem)
1217{ 1988{
1218 elem->next = *head; 1989 elem->next = *head;
1219 *head = elem; 1990 *head = elem;
1220} 1991}
1221 1992
1222inline void 1993void inline_size
1223wlist_del (WL *head, WL elem) 1994wlist_del (WL *head, WL elem)
1224{ 1995{
1225 while (*head) 1996 while (*head)
1226 { 1997 {
1227 if (*head == elem) 1998 if (*head == elem)
… …
1232 2003
1233 head = &(*head)->next; 2004 head = &(*head)->next;
1234 } 2005 }
1235} 2006}
1236 2007
1237inline void 2008void inline_speed
1238ev_clear_pending (EV_P_ W w) 2009clear_pending (EV_P_ W w)
1239{ 2010{
1240 if (w->pending) 2011 if (w->pending)
1241 { 2012 {
1242 pendings [ABSPRI (w)][w->pending - 1].w = 0; 2013 pendings [ABSPRI (w)][w->pending - 1].w = 0;
1243 w->pending = 0; 2014 w->pending = 0;
1244 } 2015 }
1245} 2016}
1246 2017
1247inline void 2018int
2019ev_clear_pending (EV_P_ void *w)
2020{
2021 W w_ = (W)w;
2022 int pending = w_->pending;
2023
2024 if (expect_true (pending))
2025 {
2026 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2027 w_->pending = 0;
2028 p->w = 0;
2029 return p->events;
2030 }
2031 else
2032 return 0;
2033}
2034
2035void inline_size
2036pri_adjust (EV_P_ W w)
2037{
2038 int pri = w->priority;
2039 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2040 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2041 w->priority = pri;
2042}
2043
2044void inline_speed
1248ev_start (EV_P_ W w, int active) 2045ev_start (EV_P_ W w, int active)
1249{ 2046{
1250 if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; 2047 pri_adjust (EV_A_ w);
1251 if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1252
1253 w->active = active; 2048 w->active = active;
1254 ev_ref (EV_A); 2049 ev_ref (EV_A);
1255} 2050}
1256 2051
1257inline void 2052void inline_size
1258ev_stop (EV_P_ W w) 2053ev_stop (EV_P_ W w)
1259{ 2054{
1260 ev_unref (EV_A); 2055 ev_unref (EV_A);
1261 w->active = 0; 2056 w->active = 0;
1262} 2057}
1263 2058
1264/*****************************************************************************/ 2059/*****************************************************************************/
1265 2060
1266void 2061void noinline
1267ev_io_start (EV_P_ struct ev_io *w) 2062ev_io_start (EV_P_ ev_io *w)
1268{ 2063{
1269 int fd = w->fd; 2064 int fd = w->fd;
1270 2065
1271 if (ev_is_active (w)) 2066 if (expect_false (ev_is_active (w)))
1272 return; 2067 return;
1273 2068
1274 assert (("ev_io_start called with negative fd", fd >= 0)); 2069 assert (("ev_io_start called with negative fd", fd >= 0));
2070
2071 EV_FREQUENT_CHECK;
1275 2072
1276 ev_start (EV_A_ (W)w, 1); 2073 ev_start (EV_A_ (W)w, 1);
1277 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 2074 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1278 wlist_add ((WL *)&anfds[fd].head, (WL)w); 2075 wlist_add (&anfds[fd].head, (WL)w);
1279 2076
1280 fd_change (EV_A_ fd); 2077 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);
1281} 2078 w->events &= ~EV_IOFDSET;
1282 2079
1283void 2080 EV_FREQUENT_CHECK;
2081}
2082
2083void noinline
1284ev_io_stop (EV_P_ struct ev_io *w) 2084ev_io_stop (EV_P_ ev_io *w)
1285{ 2085{
1286 ev_clear_pending (EV_A_ (W)w); 2086 clear_pending (EV_A_ (W)w);
1287 if (!ev_is_active (w)) 2087 if (expect_false (!ev_is_active (w)))
1288 return; 2088 return;
1289 2089
2090 assert (("ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2091
2092 EV_FREQUENT_CHECK;
2093
1290 wlist_del ((WL *)&anfds[w->fd].head, (WL)w); 2094 wlist_del (&anfds[w->fd].head, (WL)w);
1291 ev_stop (EV_A_ (W)w); 2095 ev_stop (EV_A_ (W)w);
1292 2096
1293 fd_change (EV_A_ w->fd); 2097 fd_change (EV_A_ w->fd, 1);
1294}
1295 2098
1296void 2099 EV_FREQUENT_CHECK;
2100}
2101
2102void noinline
1297ev_timer_start (EV_P_ struct ev_timer *w) 2103ev_timer_start (EV_P_ ev_timer *w)
1298{ 2104{
2105 if (expect_false (ev_is_active (w)))
2106 return;
2107
2108 ev_at (w) += mn_now;
2109
2110 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2111
2112 EV_FREQUENT_CHECK;
2113
2114 ++timercnt;
2115 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
2116 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);
2117 ANHE_w (timers [ev_active (w)]) = (WT)w;
2118 ANHE_at_cache (timers [ev_active (w)]);
2119 upheap (timers, ev_active (w));
2120
2121 EV_FREQUENT_CHECK;
2122
2123 /*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2124}
2125
2126void noinline
2127ev_timer_stop (EV_P_ ev_timer *w)
2128{
2129 clear_pending (EV_A_ (W)w);
2130 if (expect_false (!ev_is_active (w)))
2131 return;
2132
2133 EV_FREQUENT_CHECK;
2134
2135 {
2136 int active = ev_active (w);
2137
2138 assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2139
2140 --timercnt;
2141
2142 if (expect_true (active < timercnt + HEAP0))
2143 {
2144 timers [active] = timers [timercnt + HEAP0];
2145 adjustheap (timers, timercnt, active);
2146 }
2147 }
2148
2149 EV_FREQUENT_CHECK;
2150
2151 ev_at (w) -= mn_now;
2152
2153 ev_stop (EV_A_ (W)w);
2154}
2155
2156void noinline
2157ev_timer_again (EV_P_ ev_timer *w)
2158{
2159 EV_FREQUENT_CHECK;
2160
1299 if (ev_is_active (w)) 2161 if (ev_is_active (w))
1300 return;
1301
1302 ((WT)w)->at += mn_now;
1303
1304 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1305
1306 ev_start (EV_A_ (W)w, ++timercnt);
1307 array_needsize (struct ev_timer *, timers, timermax, timercnt, (void));
1308 timers [timercnt - 1] = w;
1309 upheap ((WT *)timers, timercnt - 1);
1310
1311 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1312}
1313
1314void
1315ev_timer_stop (EV_P_ struct ev_timer *w)
1316{
1317 ev_clear_pending (EV_A_ (W)w);
1318 if (!ev_is_active (w))
1319 return;
1320
1321 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1322
1323 if (((W)w)->active < timercnt--)
1324 {
1325 timers [((W)w)->active - 1] = timers [timercnt];
1326 downheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1327 }
1328
1329 ((WT)w)->at = w->repeat;
1330
1331 ev_stop (EV_A_ (W)w);
1332}
1333
1334void
1335ev_timer_again (EV_P_ struct ev_timer *w)
1336{
1337 if (ev_is_active (w))
1338 { 2162 {
1339 if (w->repeat) 2163 if (w->repeat)
1340 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1, mn_now + w->repeat); 2164 {
2165 ev_at (w) = mn_now + w->repeat;
2166 ANHE_at_cache (timers [ev_active (w)]);
2167 adjustheap (timers, timercnt, ev_active (w));
2168 }
1341 else 2169 else
1342 ev_timer_stop (EV_A_ w); 2170 ev_timer_stop (EV_A_ w);
1343 } 2171 }
1344 else if (w->repeat) 2172 else if (w->repeat)
2173 {
2174 ev_at (w) = w->repeat;
1345 ev_timer_start (EV_A_ w); 2175 ev_timer_start (EV_A_ w);
1346} 2176 }
1347 2177
1348void 2178 EV_FREQUENT_CHECK;
2179}
2180
2181#if EV_PERIODIC_ENABLE
2182void noinline
1349ev_periodic_start (EV_P_ struct ev_periodic *w) 2183ev_periodic_start (EV_P_ ev_periodic *w)
1350{ 2184{
1351 if (ev_is_active (w)) 2185 if (expect_false (ev_is_active (w)))
1352 return; 2186 return;
1353 2187
1354 if (w->reschedule_cb) 2188 if (w->reschedule_cb)
1355 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 2189 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1356 else if (w->interval) 2190 else if (w->interval)
1357 { 2191 {
1358 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 2192 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1359 /* this formula differs from the one in periodic_reify because we do not always round up */ 2193 /* this formula differs from the one in periodic_reify because we do not always round up */
1360 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval; 2194 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1361 } 2195 }
2196 else
2197 ev_at (w) = w->offset;
1362 2198
2199 EV_FREQUENT_CHECK;
2200
2201 ++periodiccnt;
1363 ev_start (EV_A_ (W)w, ++periodiccnt); 2202 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
1364 array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void)); 2203 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);
1365 periodics [periodiccnt - 1] = w; 2204 ANHE_w (periodics [ev_active (w)]) = (WT)w;
1366 upheap ((WT *)periodics, periodiccnt - 1); 2205 ANHE_at_cache (periodics [ev_active (w)]);
2206 upheap (periodics, ev_active (w));
1367 2207
2208 EV_FREQUENT_CHECK;
2209
1368 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 2210 /*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
1369} 2211}
1370 2212
1371void 2213void noinline
1372ev_periodic_stop (EV_P_ struct ev_periodic *w) 2214ev_periodic_stop (EV_P_ ev_periodic *w)
1373{ 2215{
1374 ev_clear_pending (EV_A_ (W)w); 2216 clear_pending (EV_A_ (W)w);
1375 if (!ev_is_active (w)) 2217 if (expect_false (!ev_is_active (w)))
1376 return; 2218 return;
1377 2219
2220 EV_FREQUENT_CHECK;
2221
2222 {
2223 int active = ev_active (w);
2224
1378 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 2225 assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
1379 2226
1380 if (((W)w)->active < periodiccnt--) 2227 --periodiccnt;
2228
2229 if (expect_true (active < periodiccnt + HEAP0))
1381 { 2230 {
1382 periodics [((W)w)->active - 1] = periodics [periodiccnt]; 2231 periodics [active] = periodics [periodiccnt + HEAP0];
1383 downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1); 2232 adjustheap (periodics, periodiccnt, active);
1384 } 2233 }
2234 }
2235
2236 EV_FREQUENT_CHECK;
1385 2237
1386 ev_stop (EV_A_ (W)w); 2238 ev_stop (EV_A_ (W)w);
1387} 2239}
1388 2240
1389void 2241void noinline
1390ev_periodic_again (EV_P_ struct ev_periodic *w) 2242ev_periodic_again (EV_P_ ev_periodic *w)
1391{ 2243{
1392 /* TODO: use adjustheap and recalculation */ 2244 /* TODO: use adjustheap and recalculation */
1393 ev_periodic_stop (EV_A_ w); 2245 ev_periodic_stop (EV_A_ w);
1394 ev_periodic_start (EV_A_ w); 2246 ev_periodic_start (EV_A_ w);
1395} 2247}
1396 2248#endif
1397void
1398ev_idle_start (EV_P_ struct ev_idle *w)
1399{
1400 if (ev_is_active (w))
1401 return;
1402
1403 ev_start (EV_A_ (W)w, ++idlecnt);
1404 array_needsize (struct ev_idle *, idles, idlemax, idlecnt, (void));
1405 idles [idlecnt - 1] = w;
1406}
1407
1408void
1409ev_idle_stop (EV_P_ struct ev_idle *w)
1410{
1411 ev_clear_pending (EV_A_ (W)w);
1412 if (ev_is_active (w))
1413 return;
1414
1415 idles [((W)w)->active - 1] = idles [--idlecnt];
1416 ev_stop (EV_A_ (W)w);
1417}
1418
1419void
1420ev_prepare_start (EV_P_ struct ev_prepare *w)
1421{
1422 if (ev_is_active (w))
1423 return;
1424
1425 ev_start (EV_A_ (W)w, ++preparecnt);
1426 array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, (void));
1427 prepares [preparecnt - 1] = w;
1428}
1429
1430void
1431ev_prepare_stop (EV_P_ struct ev_prepare *w)
1432{
1433 ev_clear_pending (EV_A_ (W)w);
1434 if (ev_is_active (w))
1435 return;
1436
1437 prepares [((W)w)->active - 1] = prepares [--preparecnt];
1438 ev_stop (EV_A_ (W)w);
1439}
1440
1441void
1442ev_check_start (EV_P_ struct ev_check *w)
1443{
1444 if (ev_is_active (w))
1445 return;
1446
1447 ev_start (EV_A_ (W)w, ++checkcnt);
1448 array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void));
1449 checks [checkcnt - 1] = w;
1450}
1451
1452void
1453ev_check_stop (EV_P_ struct ev_check *w)
1454{
1455 ev_clear_pending (EV_A_ (W)w);
1456 if (ev_is_active (w))
1457 return;
1458
1459 checks [((W)w)->active - 1] = checks [--checkcnt];
1460 ev_stop (EV_A_ (W)w);
1461}
1462 2249
1463#ifndef SA_RESTART 2250#ifndef SA_RESTART
1464# define SA_RESTART 0 2251# define SA_RESTART 0
1465#endif 2252#endif
1466 2253
1467void 2254void noinline
1468ev_signal_start (EV_P_ struct ev_signal *w) 2255ev_signal_start (EV_P_ ev_signal *w)
1469{ 2256{
1470#if EV_MULTIPLICITY 2257#if EV_MULTIPLICITY
1471 assert (("signal watchers are only supported in the default loop", loop == default_loop)); 2258 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1472#endif 2259#endif
1473 if (ev_is_active (w)) 2260 if (expect_false (ev_is_active (w)))
1474 return; 2261 return;
1475 2262
1476 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 2263 assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1477 2264
2265 evpipe_init (EV_A);
2266
2267 EV_FREQUENT_CHECK;
2268
2269 {
2270#ifndef _WIN32
2271 sigset_t full, prev;
2272 sigfillset (&full);
2273 sigprocmask (SIG_SETMASK, &full, &prev);
2274#endif
2275
2276 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
2277
2278#ifndef _WIN32
2279 sigprocmask (SIG_SETMASK, &prev, 0);
2280#endif
2281 }
2282
1478 ev_start (EV_A_ (W)w, 1); 2283 ev_start (EV_A_ (W)w, 1);
1479 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1480 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); 2284 wlist_add (&signals [w->signum - 1].head, (WL)w);
1481 2285
1482 if (!((WL)w)->next) 2286 if (!((WL)w)->next)
1483 { 2287 {
1484#if WIN32 2288#if _WIN32
1485 signal (w->signum, sighandler); 2289 signal (w->signum, ev_sighandler);
1486#else 2290#else
1487 struct sigaction sa; 2291 struct sigaction sa;
1488 sa.sa_handler = sighandler; 2292 sa.sa_handler = ev_sighandler;
1489 sigfillset (&sa.sa_mask); 2293 sigfillset (&sa.sa_mask);
1490 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 2294 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1491 sigaction (w->signum, &sa, 0); 2295 sigaction (w->signum, &sa, 0);
1492#endif 2296#endif
1493 } 2297 }
1494}
1495 2298
1496void 2299 EV_FREQUENT_CHECK;
2300}
2301
2302void noinline
1497ev_signal_stop (EV_P_ struct ev_signal *w) 2303ev_signal_stop (EV_P_ ev_signal *w)
1498{ 2304{
1499 ev_clear_pending (EV_A_ (W)w); 2305 clear_pending (EV_A_ (W)w);
1500 if (!ev_is_active (w)) 2306 if (expect_false (!ev_is_active (w)))
1501 return; 2307 return;
1502 2308
2309 EV_FREQUENT_CHECK;
2310
1503 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); 2311 wlist_del (&signals [w->signum - 1].head, (WL)w);
1504 ev_stop (EV_A_ (W)w); 2312 ev_stop (EV_A_ (W)w);
1505 2313
1506 if (!signals [w->signum - 1].head) 2314 if (!signals [w->signum - 1].head)
1507 signal (w->signum, SIG_DFL); 2315 signal (w->signum, SIG_DFL);
1508}
1509 2316
2317 EV_FREQUENT_CHECK;
2318}
2319
1510void 2320void
1511ev_child_start (EV_P_ struct ev_child *w) 2321ev_child_start (EV_P_ ev_child *w)
1512{ 2322{
1513#if EV_MULTIPLICITY 2323#if EV_MULTIPLICITY
1514 assert (("child watchers are only supported in the default loop", loop == default_loop)); 2324 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1515#endif 2325#endif
1516 if (ev_is_active (w)) 2326 if (expect_false (ev_is_active (w)))
1517 return; 2327 return;
1518 2328
2329 EV_FREQUENT_CHECK;
2330
1519 ev_start (EV_A_ (W)w, 1); 2331 ev_start (EV_A_ (W)w, 1);
1520 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 2332 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1521}
1522 2333
2334 EV_FREQUENT_CHECK;
2335}
2336
1523void 2337void
1524ev_child_stop (EV_P_ struct ev_child *w) 2338ev_child_stop (EV_P_ ev_child *w)
1525{ 2339{
1526 ev_clear_pending (EV_A_ (W)w); 2340 clear_pending (EV_A_ (W)w);
1527 if (ev_is_active (w)) 2341 if (expect_false (!ev_is_active (w)))
1528 return; 2342 return;
1529 2343
2344 EV_FREQUENT_CHECK;
2345
1530 wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 2346 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1531 ev_stop (EV_A_ (W)w); 2347 ev_stop (EV_A_ (W)w);
2348
2349 EV_FREQUENT_CHECK;
1532} 2350}
2351
2352#if EV_STAT_ENABLE
2353
2354# ifdef _WIN32
2355# undef lstat
2356# define lstat(a,b) _stati64 (a,b)
2357# endif
2358
2359#define DEF_STAT_INTERVAL 5.0074891
2360#define MIN_STAT_INTERVAL 0.1074891
2361
2362static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2363
2364#if EV_USE_INOTIFY
2365# define EV_INOTIFY_BUFSIZE 8192
2366
2367static void noinline
2368infy_add (EV_P_ ev_stat *w)
2369{
2370 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);
2371
2372 if (w->wd < 0)
2373 {
2374 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2375
2376 /* monitor some parent directory for speedup hints */
2377 /* note that exceeding the hardcoded limit is not a correctness issue, */
2378 /* but an efficiency issue only */
2379 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2380 {
2381 char path [4096];
2382 strcpy (path, w->path);
2383
2384 do
2385 {
2386 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2387 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2388
2389 char *pend = strrchr (path, '/');
2390
2391 if (!pend)
2392 break; /* whoops, no '/', complain to your admin */
2393
2394 *pend = 0;
2395 w->wd = inotify_add_watch (fs_fd, path, mask);
2396 }
2397 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2398 }
2399 }
2400 else
2401 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2402
2403 if (w->wd >= 0)
2404 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2405}
2406
2407static void noinline
2408infy_del (EV_P_ ev_stat *w)
2409{
2410 int slot;
2411 int wd = w->wd;
2412
2413 if (wd < 0)
2414 return;
2415
2416 w->wd = -2;
2417 slot = wd & (EV_INOTIFY_HASHSIZE - 1);
2418 wlist_del (&fs_hash [slot].head, (WL)w);
2419
2420 /* remove this watcher, if others are watching it, they will rearm */
2421 inotify_rm_watch (fs_fd, wd);
2422}
2423
2424static void noinline
2425infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2426{
2427 if (slot < 0)
2428 /* overflow, need to check for all hahs slots */
2429 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2430 infy_wd (EV_A_ slot, wd, ev);
2431 else
2432 {
2433 WL w_;
2434
2435 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
2436 {
2437 ev_stat *w = (ev_stat *)w_;
2438 w_ = w_->next; /* lets us remove this watcher and all before it */
2439
2440 if (w->wd == wd || wd == -1)
2441 {
2442 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2443 {
2444 w->wd = -1;
2445 infy_add (EV_A_ w); /* re-add, no matter what */
2446 }
2447
2448 stat_timer_cb (EV_A_ &w->timer, 0);
2449 }
2450 }
2451 }
2452}
2453
2454static void
2455infy_cb (EV_P_ ev_io *w, int revents)
2456{
2457 char buf [EV_INOTIFY_BUFSIZE];
2458 struct inotify_event *ev = (struct inotify_event *)buf;
2459 int ofs;
2460 int len = read (fs_fd, buf, sizeof (buf));
2461
2462 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
2463 infy_wd (EV_A_ ev->wd, ev->wd, ev);
2464}
2465
2466void inline_size
2467infy_init (EV_P)
2468{
2469 if (fs_fd != -2)
2470 return;
2471
2472 fs_fd = inotify_init ();
2473
2474 if (fs_fd >= 0)
2475 {
2476 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2477 ev_set_priority (&fs_w, EV_MAXPRI);
2478 ev_io_start (EV_A_ &fs_w);
2479 }
2480}
2481
2482void inline_size
2483infy_fork (EV_P)
2484{
2485 int slot;
2486
2487 if (fs_fd < 0)
2488 return;
2489
2490 close (fs_fd);
2491 fs_fd = inotify_init ();
2492
2493 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2494 {
2495 WL w_ = fs_hash [slot].head;
2496 fs_hash [slot].head = 0;
2497
2498 while (w_)
2499 {
2500 ev_stat *w = (ev_stat *)w_;
2501 w_ = w_->next; /* lets us add this watcher */
2502
2503 w->wd = -1;
2504
2505 if (fs_fd >= 0)
2506 infy_add (EV_A_ w); /* re-add, no matter what */
2507 else
2508 ev_timer_start (EV_A_ &w->timer);
2509 }
2510
2511 }
2512}
2513
2514#endif
2515
2516void
2517ev_stat_stat (EV_P_ ev_stat *w)
2518{
2519 if (lstat (w->path, &w->attr) < 0)
2520 w->attr.st_nlink = 0;
2521 else if (!w->attr.st_nlink)
2522 w->attr.st_nlink = 1;
2523}
2524
2525static void noinline
2526stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2527{
2528 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2529
2530 /* we copy this here each the time so that */
2531 /* prev has the old value when the callback gets invoked */
2532 w->prev = w->attr;
2533 ev_stat_stat (EV_A_ w);
2534
2535 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2536 if (
2537 w->prev.st_dev != w->attr.st_dev
2538 || w->prev.st_ino != w->attr.st_ino
2539 || w->prev.st_mode != w->attr.st_mode
2540 || w->prev.st_nlink != w->attr.st_nlink
2541 || w->prev.st_uid != w->attr.st_uid
2542 || w->prev.st_gid != w->attr.st_gid
2543 || w->prev.st_rdev != w->attr.st_rdev
2544 || w->prev.st_size != w->attr.st_size
2545 || w->prev.st_atime != w->attr.st_atime
2546 || w->prev.st_mtime != w->attr.st_mtime
2547 || w->prev.st_ctime != w->attr.st_ctime
2548 ) {
2549 #if EV_USE_INOTIFY
2550 infy_del (EV_A_ w);
2551 infy_add (EV_A_ w);
2552 ev_stat_stat (EV_A_ w); /* avoid race... */
2553 #endif
2554
2555 ev_feed_event (EV_A_ w, EV_STAT);
2556 }
2557}
2558
2559void
2560ev_stat_start (EV_P_ ev_stat *w)
2561{
2562 if (expect_false (ev_is_active (w)))
2563 return;
2564
2565 /* since we use memcmp, we need to clear any padding data etc. */
2566 memset (&w->prev, 0, sizeof (ev_statdata));
2567 memset (&w->attr, 0, sizeof (ev_statdata));
2568
2569 ev_stat_stat (EV_A_ w);
2570
2571 if (w->interval < MIN_STAT_INTERVAL)
2572 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2573
2574 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
2575 ev_set_priority (&w->timer, ev_priority (w));
2576
2577#if EV_USE_INOTIFY
2578 infy_init (EV_A);
2579
2580 if (fs_fd >= 0)
2581 infy_add (EV_A_ w);
2582 else
2583#endif
2584 ev_timer_start (EV_A_ &w->timer);
2585
2586 ev_start (EV_A_ (W)w, 1);
2587
2588 EV_FREQUENT_CHECK;
2589}
2590
2591void
2592ev_stat_stop (EV_P_ ev_stat *w)
2593{
2594 clear_pending (EV_A_ (W)w);
2595 if (expect_false (!ev_is_active (w)))
2596 return;
2597
2598 EV_FREQUENT_CHECK;
2599
2600#if EV_USE_INOTIFY
2601 infy_del (EV_A_ w);
2602#endif
2603 ev_timer_stop (EV_A_ &w->timer);
2604
2605 ev_stop (EV_A_ (W)w);
2606
2607 EV_FREQUENT_CHECK;
2608}
2609#endif
2610
2611#if EV_IDLE_ENABLE
2612void
2613ev_idle_start (EV_P_ ev_idle *w)
2614{
2615 if (expect_false (ev_is_active (w)))
2616 return;
2617
2618 pri_adjust (EV_A_ (W)w);
2619
2620 EV_FREQUENT_CHECK;
2621
2622 {
2623 int active = ++idlecnt [ABSPRI (w)];
2624
2625 ++idleall;
2626 ev_start (EV_A_ (W)w, active);
2627
2628 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2629 idles [ABSPRI (w)][active - 1] = w;
2630 }
2631
2632 EV_FREQUENT_CHECK;
2633}
2634
2635void
2636ev_idle_stop (EV_P_ ev_idle *w)
2637{
2638 clear_pending (EV_A_ (W)w);
2639 if (expect_false (!ev_is_active (w)))
2640 return;
2641
2642 EV_FREQUENT_CHECK;
2643
2644 {
2645 int active = ev_active (w);
2646
2647 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2648 ev_active (idles [ABSPRI (w)][active - 1]) = active;
2649
2650 ev_stop (EV_A_ (W)w);
2651 --idleall;
2652 }
2653
2654 EV_FREQUENT_CHECK;
2655}
2656#endif
2657
2658void
2659ev_prepare_start (EV_P_ ev_prepare *w)
2660{
2661 if (expect_false (ev_is_active (w)))
2662 return;
2663
2664 EV_FREQUENT_CHECK;
2665
2666 ev_start (EV_A_ (W)w, ++preparecnt);
2667 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2668 prepares [preparecnt - 1] = w;
2669
2670 EV_FREQUENT_CHECK;
2671}
2672
2673void
2674ev_prepare_stop (EV_P_ ev_prepare *w)
2675{
2676 clear_pending (EV_A_ (W)w);
2677 if (expect_false (!ev_is_active (w)))
2678 return;
2679
2680 EV_FREQUENT_CHECK;
2681
2682 {
2683 int active = ev_active (w);
2684
2685 prepares [active - 1] = prepares [--preparecnt];
2686 ev_active (prepares [active - 1]) = active;
2687 }
2688
2689 ev_stop (EV_A_ (W)w);
2690
2691 EV_FREQUENT_CHECK;
2692}
2693
2694void
2695ev_check_start (EV_P_ ev_check *w)
2696{
2697 if (expect_false (ev_is_active (w)))
2698 return;
2699
2700 EV_FREQUENT_CHECK;
2701
2702 ev_start (EV_A_ (W)w, ++checkcnt);
2703 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2704 checks [checkcnt - 1] = w;
2705
2706 EV_FREQUENT_CHECK;
2707}
2708
2709void
2710ev_check_stop (EV_P_ ev_check *w)
2711{
2712 clear_pending (EV_A_ (W)w);
2713 if (expect_false (!ev_is_active (w)))
2714 return;
2715
2716 EV_FREQUENT_CHECK;
2717
2718 {
2719 int active = ev_active (w);
2720
2721 checks [active - 1] = checks [--checkcnt];
2722 ev_active (checks [active - 1]) = active;
2723 }
2724
2725 ev_stop (EV_A_ (W)w);
2726
2727 EV_FREQUENT_CHECK;
2728}
2729
2730#if EV_EMBED_ENABLE
2731void noinline
2732ev_embed_sweep (EV_P_ ev_embed *w)
2733{
2734 ev_loop (w->other, EVLOOP_NONBLOCK);
2735}
2736
2737static void
2738embed_io_cb (EV_P_ ev_io *io, int revents)
2739{
2740 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2741
2742 if (ev_cb (w))
2743 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2744 else
2745 ev_loop (w->other, EVLOOP_NONBLOCK);
2746}
2747
2748static void
2749embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2750{
2751 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2752
2753 {
2754 struct ev_loop *loop = w->other;
2755
2756 while (fdchangecnt)
2757 {
2758 fd_reify (EV_A);
2759 ev_loop (EV_A_ EVLOOP_NONBLOCK);
2760 }
2761 }
2762}
2763
2764#if 0
2765static void
2766embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2767{
2768 ev_idle_stop (EV_A_ idle);
2769}
2770#endif
2771
2772void
2773ev_embed_start (EV_P_ ev_embed *w)
2774{
2775 if (expect_false (ev_is_active (w)))
2776 return;
2777
2778 {
2779 struct ev_loop *loop = w->other;
2780 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2781 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2782 }
2783
2784 EV_FREQUENT_CHECK;
2785
2786 ev_set_priority (&w->io, ev_priority (w));
2787 ev_io_start (EV_A_ &w->io);
2788
2789 ev_prepare_init (&w->prepare, embed_prepare_cb);
2790 ev_set_priority (&w->prepare, EV_MINPRI);
2791 ev_prepare_start (EV_A_ &w->prepare);
2792
2793 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2794
2795 ev_start (EV_A_ (W)w, 1);
2796
2797 EV_FREQUENT_CHECK;
2798}
2799
2800void
2801ev_embed_stop (EV_P_ ev_embed *w)
2802{
2803 clear_pending (EV_A_ (W)w);
2804 if (expect_false (!ev_is_active (w)))
2805 return;
2806
2807 EV_FREQUENT_CHECK;
2808
2809 ev_io_stop (EV_A_ &w->io);
2810 ev_prepare_stop (EV_A_ &w->prepare);
2811
2812 ev_stop (EV_A_ (W)w);
2813
2814 EV_FREQUENT_CHECK;
2815}
2816#endif
2817
2818#if EV_FORK_ENABLE
2819void
2820ev_fork_start (EV_P_ ev_fork *w)
2821{
2822 if (expect_false (ev_is_active (w)))
2823 return;
2824
2825 EV_FREQUENT_CHECK;
2826
2827 ev_start (EV_A_ (W)w, ++forkcnt);
2828 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2829 forks [forkcnt - 1] = w;
2830
2831 EV_FREQUENT_CHECK;
2832}
2833
2834void
2835ev_fork_stop (EV_P_ ev_fork *w)
2836{
2837 clear_pending (EV_A_ (W)w);
2838 if (expect_false (!ev_is_active (w)))
2839 return;
2840
2841 EV_FREQUENT_CHECK;
2842
2843 {
2844 int active = ev_active (w);
2845
2846 forks [active - 1] = forks [--forkcnt];
2847 ev_active (forks [active - 1]) = active;
2848 }
2849
2850 ev_stop (EV_A_ (W)w);
2851
2852 EV_FREQUENT_CHECK;
2853}
2854#endif
2855
2856#if EV_ASYNC_ENABLE
2857void
2858ev_async_start (EV_P_ ev_async *w)
2859{
2860 if (expect_false (ev_is_active (w)))
2861 return;
2862
2863 evpipe_init (EV_A);
2864
2865 EV_FREQUENT_CHECK;
2866
2867 ev_start (EV_A_ (W)w, ++asynccnt);
2868 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
2869 asyncs [asynccnt - 1] = w;
2870
2871 EV_FREQUENT_CHECK;
2872}
2873
2874void
2875ev_async_stop (EV_P_ ev_async *w)
2876{
2877 clear_pending (EV_A_ (W)w);
2878 if (expect_false (!ev_is_active (w)))
2879 return;
2880
2881 EV_FREQUENT_CHECK;
2882
2883 {
2884 int active = ev_active (w);
2885
2886 asyncs [active - 1] = asyncs [--asynccnt];
2887 ev_active (asyncs [active - 1]) = active;
2888 }
2889
2890 ev_stop (EV_A_ (W)w);
2891
2892 EV_FREQUENT_CHECK;
2893}
2894
2895void
2896ev_async_send (EV_P_ ev_async *w)
2897{
2898 w->sent = 1;
2899 evpipe_write (EV_A_ &gotasync);
2900}
2901#endif
1533 2902
1534/*****************************************************************************/ 2903/*****************************************************************************/
1535 2904
1536struct ev_once 2905struct ev_once
1537{ 2906{
1538 struct ev_io io; 2907 ev_io io;
1539 struct ev_timer to; 2908 ev_timer to;
1540 void (*cb)(int revents, void *arg); 2909 void (*cb)(int revents, void *arg);
1541 void *arg; 2910 void *arg;
1542}; 2911};
1543 2912
1544static void 2913static void
… …
1553 2922
1554 cb (revents, arg); 2923 cb (revents, arg);
1555} 2924}
1556 2925
1557static void 2926static void
1558once_cb_io (EV_P_ struct ev_io *w, int revents) 2927once_cb_io (EV_P_ ev_io *w, int revents)
1559{ 2928{
1560 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 2929 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1561} 2930}
1562 2931
1563static void 2932static void
1564once_cb_to (EV_P_ struct ev_timer *w, int revents) 2933once_cb_to (EV_P_ ev_timer *w, int revents)
1565{ 2934{
1566 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 2935 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1567} 2936}
1568 2937
1569void 2938void
1570ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 2939ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1571{ 2940{
1572 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 2941 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1573 2942
1574 if (!once) 2943 if (expect_false (!once))
2944 {
1575 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 2945 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1576 else 2946 return;
1577 { 2947 }
2948
1578 once->cb = cb; 2949 once->cb = cb;
1579 once->arg = arg; 2950 once->arg = arg;
1580 2951
1581 ev_init (&once->io, once_cb_io); 2952 ev_init (&once->io, once_cb_io);
1582 if (fd >= 0) 2953 if (fd >= 0)
1583 { 2954 {
1584 ev_io_set (&once->io, fd, events); 2955 ev_io_set (&once->io, fd, events);
1585 ev_io_start (EV_A_ &once->io); 2956 ev_io_start (EV_A_ &once->io);
1586 } 2957 }
1587 2958
1588 ev_init (&once->to, once_cb_to); 2959 ev_init (&once->to, once_cb_to);
1589 if (timeout >= 0.) 2960 if (timeout >= 0.)
1590 { 2961 {
1591 ev_timer_set (&once->to, timeout, 0.); 2962 ev_timer_set (&once->to, timeout, 0.);
1592 ev_timer_start (EV_A_ &once->to); 2963 ev_timer_start (EV_A_ &once->to);
1593 }
1594 } 2964 }
1595} 2965}
1596 2966
2967#if EV_MULTIPLICITY
2968 #include "ev_wrap.h"
2969#endif
2970
2971#ifdef __cplusplus
2972}
2973#endif
2974

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