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Comparing libev/ev.c (file contents):
Revision 1.72 by root, Tue Nov 6 16:09:37 2007 UTC vs.
Revision 1.241 by root, Fri May 9 13:57:00 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
148#ifdef EV_H
149# include EV_H
150#else
151# include "ev.h"
152#endif
153
71#ifndef WIN32 154#ifndef _WIN32
72# include <unistd.h>
73# include <sys/time.h> 155# include <sys/time.h>
74# include <sys/wait.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
75#endif 163# endif
76/**/ 164#endif
165
166/* this block tries to deduce configuration from header-defined symbols and defaults */
77 167
78#ifndef EV_USE_MONOTONIC 168#ifndef EV_USE_MONOTONIC
79# define EV_USE_MONOTONIC 1 169# 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
80#endif 178#endif
81 179
82#ifndef EV_USE_SELECT 180#ifndef EV_USE_SELECT
83# define EV_USE_SELECT 1 181# define EV_USE_SELECT 1
84#endif 182#endif
85 183
86#ifndef EV_USE_POLL 184#ifndef EV_USE_POLL
87# define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */ 185# ifdef _WIN32
186# define EV_USE_POLL 0
187# else
188# define EV_USE_POLL 1
189# endif
88#endif 190#endif
89 191
90#ifndef EV_USE_EPOLL 192#ifndef EV_USE_EPOLL
193# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
194# define EV_USE_EPOLL 1
195# else
91# define EV_USE_EPOLL 0 196# define EV_USE_EPOLL 0
197# endif
92#endif 198#endif
93 199
94#ifndef EV_USE_KQUEUE 200#ifndef EV_USE_KQUEUE
95# define EV_USE_KQUEUE 0 201# define EV_USE_KQUEUE 0
96#endif 202#endif
97 203
204#ifndef EV_USE_PORT
205# define EV_USE_PORT 0
206#endif
207
98#ifndef EV_USE_WIN32 208#ifndef EV_USE_INOTIFY
99# ifdef WIN32 209# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
100# define EV_USE_WIN32 0 /* it does not exist, use select */
101# undef EV_USE_SELECT
102# define EV_USE_SELECT 1 210# define EV_USE_INOTIFY 1
103# else 211# else
104# define EV_USE_WIN32 0 212# define EV_USE_INOTIFY 0
105# endif 213# endif
106#endif 214#endif
107 215
108#ifndef EV_USE_REALTIME 216#ifndef EV_PID_HASHSIZE
109# define EV_USE_REALTIME 1 217# if EV_MINIMAL
218# define EV_PID_HASHSIZE 1
219# else
220# define EV_PID_HASHSIZE 16
110#endif 221# endif
222#endif
111 223
112/**/ 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/* this block fixes any misconfiguration where we know we run into trouble otherwise */
113 241
114#ifndef CLOCK_MONOTONIC 242#ifndef CLOCK_MONOTONIC
115# undef EV_USE_MONOTONIC 243# undef EV_USE_MONOTONIC
116# define EV_USE_MONOTONIC 0 244# define EV_USE_MONOTONIC 0
117#endif 245#endif
… …
119#ifndef CLOCK_REALTIME 247#ifndef CLOCK_REALTIME
120# undef EV_USE_REALTIME 248# undef EV_USE_REALTIME
121# define EV_USE_REALTIME 0 249# define EV_USE_REALTIME 0
122#endif 250#endif
123 251
252#if !EV_STAT_ENABLE
253# undef EV_USE_INOTIFY
254# define EV_USE_INOTIFY 0
255#endif
256
257#if !EV_USE_NANOSLEEP
258# ifndef _WIN32
259# include <sys/select.h>
260# endif
261#endif
262
263#if EV_USE_INOTIFY
264# include <sys/inotify.h>
265#endif
266
267#if EV_SELECT_IS_WINSOCKET
268# include <winsock.h>
269#endif
270
271#if EV_USE_EVENTFD
272/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
273# include <stdint.h>
274# ifdef __cplusplus
275extern "C" {
276# endif
277int eventfd (unsigned int initval, int flags);
278# ifdef __cplusplus
279}
280# endif
281#endif
282
124/**/ 283/**/
125 284
285/*
286 * This is used to avoid floating point rounding problems.
287 * It is added to ev_rt_now when scheduling periodics
288 * to ensure progress, time-wise, even when rounding
289 * errors are against us.
290 * This value is good at least till the year 4000.
291 * Better solutions welcome.
292 */
293#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
294
126#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 295#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) */ 296#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
128#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
129/*#define CLEANUP_INTERVAL 300. /* how often to try to free memory and re-check fds */ 297/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
130 298
131#include "ev.h"
132
133#if __GNUC__ >= 3 299#if __GNUC__ >= 4
134# define expect(expr,value) __builtin_expect ((expr),(value)) 300# define expect(expr,value) __builtin_expect ((expr),(value))
135# define inline inline 301# define noinline __attribute__ ((noinline))
136#else 302#else
137# define expect(expr,value) (expr) 303# define expect(expr,value) (expr)
138# define inline static 304# define noinline
305# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
306# define inline
307# endif
139#endif 308#endif
140 309
141#define expect_false(expr) expect ((expr) != 0, 0) 310#define expect_false(expr) expect ((expr) != 0, 0)
142#define expect_true(expr) expect ((expr) != 0, 1) 311#define expect_true(expr) expect ((expr) != 0, 1)
312#define inline_size static inline
313
314#if EV_MINIMAL
315# define inline_speed static noinline
316#else
317# define inline_speed static inline
318#endif
143 319
144#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 320#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
145#define ABSPRI(w) ((w)->priority - EV_MINPRI) 321#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
146 322
323#define EMPTY /* required for microsofts broken pseudo-c compiler */
324#define EMPTY2(a,b) /* used to suppress some warnings */
325
147typedef struct ev_watcher *W; 326typedef ev_watcher *W;
148typedef struct ev_watcher_list *WL; 327typedef ev_watcher_list *WL;
149typedef struct ev_watcher_time *WT; 328typedef ev_watcher_time *WT;
150 329
330#define ev_active(w) ((W)(w))->active
331#define ev_at(w) ((WT)(w))->at
332
333#if EV_USE_MONOTONIC
334/* sig_atomic_t is used to avoid per-thread variables or locking but still */
335/* giving it a reasonably high chance of working on typical architetcures */
151static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 336static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
337#endif
152 338
153#if WIN32 339#ifdef _WIN32
154/* note: the comment below could not be substantiated, but what would I care */ 340# include "ev_win32.c"
155/* MSDN says this is required to handle SIGFPE */
156volatile double SIGFPE_REQ = 0.0f;
157
158static int
159ev_socketpair_tcp (int filedes [2])
160{
161 struct sockaddr_in addr = { 0 };
162 int addr_size = sizeof (addr);
163 SOCKET listener;
164 SOCKET sock [2] = { -1, -1 };
165
166 if ((listener = socket (AF_INET, SOCK_STREAM, 0)) == INVALID_SOCKET)
167 return -1;
168
169 addr.sin_family = AF_INET;
170 addr.sin_addr.s_addr = htonl (INADDR_LOOPBACK);
171 addr.sin_port = 0;
172
173 if (bind (listener, (struct sockaddr *)&addr, addr_size))
174 goto fail;
175
176 if (getsockname(listener, (struct sockaddr *)&addr, &addr_size))
177 goto fail;
178
179 if (listen (listener, 1))
180 goto fail;
181
182 if ((sock [0] = socket (AF_INET, SOCK_STREAM, 0)) == INVALID_SOCKET)
183 goto fail;
184
185 if (connect (sock[0], (struct sockaddr *)&addr, addr_size))
186 goto fail;
187
188 if ((sock[1] = accept (listener, 0, 0)) < 0)
189 goto fail;
190
191 closesocket (listener);
192
193 filedes [0] = sock [0];
194 filedes [1] = sock [1];
195
196 return 0;
197
198fail:
199 closesocket (listener);
200
201 if (sock [0] != INVALID_SOCKET) closesocket (sock [0]);
202 if (sock [1] != INVALID_SOCKET) closesocket (sock [1]);
203
204 return -1;
205}
206
207# define ev_pipe(filedes) ev_socketpair_tcp (filedes)
208#else
209# define ev_pipe(filedes) pipe (filedes)
210#endif 341#endif
211 342
212/*****************************************************************************/ 343/*****************************************************************************/
213 344
214static void (*syserr_cb)(const char *msg); 345static void (*syserr_cb)(const char *msg);
215 346
347void
216void ev_set_syserr_cb (void (*cb)(const char *msg)) 348ev_set_syserr_cb (void (*cb)(const char *msg))
217{ 349{
218 syserr_cb = cb; 350 syserr_cb = cb;
219} 351}
220 352
221static void 353static void noinline
222syserr (const char *msg) 354syserr (const char *msg)
223{ 355{
224 if (!msg) 356 if (!msg)
225 msg = "(libev) system error"; 357 msg = "(libev) system error";
226 358
… …
231 perror (msg); 363 perror (msg);
232 abort (); 364 abort ();
233 } 365 }
234} 366}
235 367
368static void *
369ev_realloc_emul (void *ptr, long size)
370{
371 /* some systems, notably openbsd and darwin, fail to properly
372 * implement realloc (x, 0) (as required by both ansi c-98 and
373 * the single unix specification, so work around them here.
374 */
375
376 if (size)
377 return realloc (ptr, size);
378
379 free (ptr);
380 return 0;
381}
382
236static void *(*alloc)(void *ptr, long size); 383static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
237 384
385void
238void ev_set_allocator (void *(*cb)(void *ptr, long size)) 386ev_set_allocator (void *(*cb)(void *ptr, long size))
239{ 387{
240 alloc = cb; 388 alloc = cb;
241} 389}
242 390
243static void * 391inline_speed void *
244ev_realloc (void *ptr, long size) 392ev_realloc (void *ptr, long size)
245{ 393{
246 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size); 394 ptr = alloc (ptr, size);
247 395
248 if (!ptr && size) 396 if (!ptr && size)
249 { 397 {
250 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 398 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
251 abort (); 399 abort ();
… …
262typedef struct 410typedef struct
263{ 411{
264 WL head; 412 WL head;
265 unsigned char events; 413 unsigned char events;
266 unsigned char reify; 414 unsigned char reify;
415#if EV_SELECT_IS_WINSOCKET
416 SOCKET handle;
417#endif
267} ANFD; 418} ANFD;
268 419
269typedef struct 420typedef struct
270{ 421{
271 W w; 422 W w;
272 int events; 423 int events;
273} ANPENDING; 424} ANPENDING;
274 425
426#if EV_USE_INOTIFY
427/* hash table entry per inotify-id */
428typedef struct
429{
430 WL head;
431} ANFS;
432#endif
433
434/* Heap Entry */
435#if EV_HEAP_CACHE_AT
436 typedef struct {
437 WT w;
438 ev_tstamp at;
439 } ANHE;
440
441 #define ANHE_w(he) (he) /* access watcher, read-write */
442 #define ANHE_at(he) (he)->at /* acces cahced at, read-only */
443 #define ANHE_at_set(he) (he)->at = (he)->w->at /* update at from watcher */
444#else
445 typedef WT ANHE;
446
447 #define ANHE_w(he) (he)
448 #define ANHE_at(he) (he)->at
449 #define ANHE_at_set(he)
450#endif
451
275#if EV_MULTIPLICITY 452#if EV_MULTIPLICITY
276 453
277struct ev_loop 454 struct ev_loop
278{ 455 {
456 ev_tstamp ev_rt_now;
457 #define ev_rt_now ((loop)->ev_rt_now)
279# define VAR(name,decl) decl; 458 #define VAR(name,decl) decl;
280# include "ev_vars.h" 459 #include "ev_vars.h"
281};
282# undef VAR 460 #undef VAR
461 };
283# include "ev_wrap.h" 462 #include "ev_wrap.h"
463
464 static struct ev_loop default_loop_struct;
465 struct ev_loop *ev_default_loop_ptr;
284 466
285#else 467#else
286 468
469 ev_tstamp ev_rt_now;
287# define VAR(name,decl) static decl; 470 #define VAR(name,decl) static decl;
288# include "ev_vars.h" 471 #include "ev_vars.h"
289# undef VAR 472 #undef VAR
473
474 static int ev_default_loop_ptr;
290 475
291#endif 476#endif
292 477
293/*****************************************************************************/ 478/*****************************************************************************/
294 479
295inline ev_tstamp 480ev_tstamp
296ev_time (void) 481ev_time (void)
297{ 482{
298#if EV_USE_REALTIME 483#if EV_USE_REALTIME
299 struct timespec ts; 484 struct timespec ts;
300 clock_gettime (CLOCK_REALTIME, &ts); 485 clock_gettime (CLOCK_REALTIME, &ts);
… …
304 gettimeofday (&tv, 0); 489 gettimeofday (&tv, 0);
305 return tv.tv_sec + tv.tv_usec * 1e-6; 490 return tv.tv_sec + tv.tv_usec * 1e-6;
306#endif 491#endif
307} 492}
308 493
309inline ev_tstamp 494ev_tstamp inline_size
310get_clock (void) 495get_clock (void)
311{ 496{
312#if EV_USE_MONOTONIC 497#if EV_USE_MONOTONIC
313 if (expect_true (have_monotonic)) 498 if (expect_true (have_monotonic))
314 { 499 {
… …
319#endif 504#endif
320 505
321 return ev_time (); 506 return ev_time ();
322} 507}
323 508
509#if EV_MULTIPLICITY
324ev_tstamp 510ev_tstamp
325ev_now (EV_P) 511ev_now (EV_P)
326{ 512{
327 return rt_now; 513 return ev_rt_now;
328} 514}
515#endif
329 516
330#define array_roundsize(base,n) ((n) | 4 & ~3) 517void
518ev_sleep (ev_tstamp delay)
519{
520 if (delay > 0.)
521 {
522#if EV_USE_NANOSLEEP
523 struct timespec ts;
331 524
525 ts.tv_sec = (time_t)delay;
526 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
527
528 nanosleep (&ts, 0);
529#elif defined(_WIN32)
530 Sleep ((unsigned long)(delay * 1e3));
531#else
532 struct timeval tv;
533
534 tv.tv_sec = (time_t)delay;
535 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
536
537 select (0, 0, 0, 0, &tv);
538#endif
539 }
540}
541
542/*****************************************************************************/
543
544#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
545
546int inline_size
547array_nextsize (int elem, int cur, int cnt)
548{
549 int ncur = cur + 1;
550
551 do
552 ncur <<= 1;
553 while (cnt > ncur);
554
555 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */
556 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
557 {
558 ncur *= elem;
559 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
560 ncur = ncur - sizeof (void *) * 4;
561 ncur /= elem;
562 }
563
564 return ncur;
565}
566
567static noinline void *
568array_realloc (int elem, void *base, int *cur, int cnt)
569{
570 *cur = array_nextsize (elem, *cur, cnt);
571 return ev_realloc (base, elem * *cur);
572}
573
332#define array_needsize(base,cur,cnt,init) \ 574#define array_needsize(type,base,cur,cnt,init) \
333 if (expect_false ((cnt) > cur)) \ 575 if (expect_false ((cnt) > (cur))) \
334 { \ 576 { \
335 int newcnt = cur; \ 577 int ocur_ = (cur); \
336 do \ 578 (base) = (type *)array_realloc \
337 { \ 579 (sizeof (type), (base), &(cur), (cnt)); \
338 newcnt = array_roundsize (base, newcnt << 1); \ 580 init ((base) + (ocur_), (cur) - ocur_); \
339 } \
340 while ((cnt) > newcnt); \
341 \
342 base = ev_realloc (base, sizeof (*base) * (newcnt)); \
343 init (base + cur, newcnt - cur); \
344 cur = newcnt; \
345 } 581 }
346 582
583#if 0
347#define array_slim(stem) \ 584#define array_slim(type,stem) \
348 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 585 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
349 { \ 586 { \
350 stem ## max = array_roundsize (stem ## cnt >> 1); \ 587 stem ## max = array_roundsize (stem ## cnt >> 1); \
351 base = ev_realloc (base, sizeof (*base) * (stem ## max)); \ 588 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
352 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 589 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
353 } 590 }
354 591#endif
355/* microsoft's pseudo-c is quite far from C as the rest of the world and the standard knows it */
356/* bringing us everlasting joy in form of stupid extra macros that are not required in C */
357#define array_free_microshit(stem) \
358 ev_free (stem ## s); stem ## cnt = stem ## max = 0;
359 592
360#define array_free(stem, idx) \ 593#define array_free(stem, idx) \
361 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 594 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
362 595
363/*****************************************************************************/ 596/*****************************************************************************/
364 597
365static void 598void noinline
599ev_feed_event (EV_P_ void *w, int revents)
600{
601 W w_ = (W)w;
602 int pri = ABSPRI (w_);
603
604 if (expect_false (w_->pending))
605 pendings [pri][w_->pending - 1].events |= revents;
606 else
607 {
608 w_->pending = ++pendingcnt [pri];
609 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
610 pendings [pri][w_->pending - 1].w = w_;
611 pendings [pri][w_->pending - 1].events = revents;
612 }
613}
614
615void inline_speed
616queue_events (EV_P_ W *events, int eventcnt, int type)
617{
618 int i;
619
620 for (i = 0; i < eventcnt; ++i)
621 ev_feed_event (EV_A_ events [i], type);
622}
623
624/*****************************************************************************/
625
626void inline_size
366anfds_init (ANFD *base, int count) 627anfds_init (ANFD *base, int count)
367{ 628{
368 while (count--) 629 while (count--)
369 { 630 {
370 base->head = 0; 631 base->head = 0;
… …
373 634
374 ++base; 635 ++base;
375 } 636 }
376} 637}
377 638
378static void 639void inline_speed
379event (EV_P_ W w, int events)
380{
381 if (w->pending)
382 {
383 pendings [ABSPRI (w)][w->pending - 1].events |= events;
384 return;
385 }
386
387 w->pending = ++pendingcnt [ABSPRI (w)];
388 array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], (void));
389 pendings [ABSPRI (w)][w->pending - 1].w = w;
390 pendings [ABSPRI (w)][w->pending - 1].events = events;
391}
392
393static void
394queue_events (EV_P_ W *events, int eventcnt, int type)
395{
396 int i;
397
398 for (i = 0; i < eventcnt; ++i)
399 event (EV_A_ events [i], type);
400}
401
402static void
403fd_event (EV_P_ int fd, int events) 640fd_event (EV_P_ int fd, int revents)
404{ 641{
405 ANFD *anfd = anfds + fd; 642 ANFD *anfd = anfds + fd;
406 struct ev_io *w; 643 ev_io *w;
407 644
408 for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) 645 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
409 { 646 {
410 int ev = w->events & events; 647 int ev = w->events & revents;
411 648
412 if (ev) 649 if (ev)
413 event (EV_A_ (W)w, ev); 650 ev_feed_event (EV_A_ (W)w, ev);
414 } 651 }
415} 652}
416 653
417/*****************************************************************************/ 654void
655ev_feed_fd_event (EV_P_ int fd, int revents)
656{
657 if (fd >= 0 && fd < anfdmax)
658 fd_event (EV_A_ fd, revents);
659}
418 660
419static void 661void inline_size
420fd_reify (EV_P) 662fd_reify (EV_P)
421{ 663{
422 int i; 664 int i;
423 665
424 for (i = 0; i < fdchangecnt; ++i) 666 for (i = 0; i < fdchangecnt; ++i)
425 { 667 {
426 int fd = fdchanges [i]; 668 int fd = fdchanges [i];
427 ANFD *anfd = anfds + fd; 669 ANFD *anfd = anfds + fd;
428 struct ev_io *w; 670 ev_io *w;
429 671
430 int events = 0; 672 unsigned char events = 0;
431 673
432 for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) 674 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
433 events |= w->events; 675 events |= (unsigned char)w->events;
434 676
677#if EV_SELECT_IS_WINSOCKET
678 if (events)
679 {
680 unsigned long argp;
681 #ifdef EV_FD_TO_WIN32_HANDLE
682 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
683 #else
684 anfd->handle = _get_osfhandle (fd);
685 #endif
686 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
687 }
688#endif
689
690 {
691 unsigned char o_events = anfd->events;
692 unsigned char o_reify = anfd->reify;
693
435 anfd->reify = 0; 694 anfd->reify = 0;
436
437 method_modify (EV_A_ fd, anfd->events, events);
438 anfd->events = events; 695 anfd->events = events;
696
697 if (o_events != events || o_reify & EV_IOFDSET)
698 backend_modify (EV_A_ fd, o_events, events);
699 }
439 } 700 }
440 701
441 fdchangecnt = 0; 702 fdchangecnt = 0;
442} 703}
443 704
444static void 705void inline_size
445fd_change (EV_P_ int fd) 706fd_change (EV_P_ int fd, int flags)
446{ 707{
447 if (anfds [fd].reify) 708 unsigned char reify = anfds [fd].reify;
448 return;
449
450 anfds [fd].reify = 1; 709 anfds [fd].reify |= flags;
451 710
711 if (expect_true (!reify))
712 {
452 ++fdchangecnt; 713 ++fdchangecnt;
453 array_needsize (fdchanges, fdchangemax, fdchangecnt, (void)); 714 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
454 fdchanges [fdchangecnt - 1] = fd; 715 fdchanges [fdchangecnt - 1] = fd;
716 }
455} 717}
456 718
457static void 719void inline_speed
458fd_kill (EV_P_ int fd) 720fd_kill (EV_P_ int fd)
459{ 721{
460 struct ev_io *w; 722 ev_io *w;
461 723
462 while ((w = (struct ev_io *)anfds [fd].head)) 724 while ((w = (ev_io *)anfds [fd].head))
463 { 725 {
464 ev_io_stop (EV_A_ w); 726 ev_io_stop (EV_A_ w);
465 event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 727 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
466 } 728 }
467} 729}
468 730
469static int 731int inline_size
470fd_valid (int fd) 732fd_valid (int fd)
471{ 733{
472#ifdef WIN32 734#ifdef _WIN32
473 return !!win32_get_osfhandle (fd); 735 return _get_osfhandle (fd) != -1;
474#else 736#else
475 return fcntl (fd, F_GETFD) != -1; 737 return fcntl (fd, F_GETFD) != -1;
476#endif 738#endif
477} 739}
478 740
479/* called on EBADF to verify fds */ 741/* called on EBADF to verify fds */
480static void 742static void noinline
481fd_ebadf (EV_P) 743fd_ebadf (EV_P)
482{ 744{
483 int fd; 745 int fd;
484 746
485 for (fd = 0; fd < anfdmax; ++fd) 747 for (fd = 0; fd < anfdmax; ++fd)
… …
487 if (!fd_valid (fd) == -1 && errno == EBADF) 749 if (!fd_valid (fd) == -1 && errno == EBADF)
488 fd_kill (EV_A_ fd); 750 fd_kill (EV_A_ fd);
489} 751}
490 752
491/* called on ENOMEM in select/poll to kill some fds and retry */ 753/* called on ENOMEM in select/poll to kill some fds and retry */
492static void 754static void noinline
493fd_enomem (EV_P) 755fd_enomem (EV_P)
494{ 756{
495 int fd; 757 int fd;
496 758
497 for (fd = anfdmax; fd--; ) 759 for (fd = anfdmax; fd--; )
… …
500 fd_kill (EV_A_ fd); 762 fd_kill (EV_A_ fd);
501 return; 763 return;
502 } 764 }
503} 765}
504 766
505/* usually called after fork if method needs to re-arm all fds from scratch */ 767/* usually called after fork if backend needs to re-arm all fds from scratch */
506static void 768static void noinline
507fd_rearm_all (EV_P) 769fd_rearm_all (EV_P)
508{ 770{
509 int fd; 771 int fd;
510 772
511 /* this should be highly optimised to not do anything but set a flag */
512 for (fd = 0; fd < anfdmax; ++fd) 773 for (fd = 0; fd < anfdmax; ++fd)
513 if (anfds [fd].events) 774 if (anfds [fd].events)
514 { 775 {
515 anfds [fd].events = 0; 776 anfds [fd].events = 0;
516 fd_change (EV_A_ fd); 777 fd_change (EV_A_ fd, EV_IOFDSET | 1);
517 } 778 }
518} 779}
519 780
520/*****************************************************************************/ 781/*****************************************************************************/
521 782
522static void 783/*
784 * the heap functions want a real array index. array index 0 uis guaranteed to not
785 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
786 * the branching factor of the d-tree.
787 */
788
789/*
790 * at the moment we allow libev the luxury of two heaps,
791 * a small-code-size 2-heap one and a ~1.5kb larger 4-heap
792 * which is more cache-efficient.
793 * the difference is about 5% with 50000+ watchers.
794 */
795#define EV_USE_4HEAP !EV_MINIMAL
796#if EV_USE_4HEAP
797
798#define DHEAP 4
799#define HEAP0 (DHEAP - 1) /* index of first element in heap */
800
801/* towards the root */
802void inline_speed
523upheap (WT *heap, int k) 803upheap (ANHE *heap, int k)
524{ 804{
525 WT w = heap [k]; 805 ANHE he = heap [k];
526 806
527 while (k && heap [k >> 1]->at > w->at) 807 for (;;)
528 { 808 {
809 int p = ((k - HEAP0 - 1) / DHEAP) + HEAP0;
810
811 if (p == k || ANHE_at (heap [p]) <= ANHE_at (he))
812 break;
813
529 heap [k] = heap [k >> 1]; 814 heap [k] = heap [p];
530 ((W)heap [k])->active = k + 1; 815 ev_active (ANHE_w (heap [k])) = k;
531 k >>= 1; 816 k = p;
817 }
818
819 ev_active (ANHE_w (he)) = k;
820 heap [k] = he;
821}
822
823/* away from the root */
824void inline_speed
825downheap (ANHE *heap, int N, int k)
826{
827 ANHE he = heap [k];
828 ANHE *E = heap + N + HEAP0;
829
830 for (;;)
831 {
832 ev_tstamp minat;
833 ANHE *minpos;
834 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0;
835
836 // find minimum child
837 if (expect_true (pos + DHEAP - 1 < E))
838 {
839 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
840 if (ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
841 if (ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
842 if (ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
843 }
844 else if (pos < E)
845 {
846 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
847 if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
848 if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
849 if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
850 }
851 else
852 break;
853
854 if (ANHE_at (he) <= minat)
855 break;
856
857 ev_active (ANHE_w (*minpos)) = k;
858 heap [k] = *minpos;
859
860 k = minpos - heap;
861 }
862
863 ev_active (ANHE_w (he)) = k;
864 heap [k] = he;
865}
866
867#else // 4HEAP
868
869#define HEAP0 1
870
871/* towards the root */
872void inline_speed
873upheap (ANHE *heap, int k)
874{
875 ANHE he = heap [k];
876
877 for (;;)
878 {
879 int p = k >> 1;
880
881 /* maybe we could use a dummy element at heap [0]? */
882 if (!p || ANHE_at (heap [p]) <= ANHE_at (he))
883 break;
884
885 heap [k] = heap [p];
886 ev_active (ANHE_w (heap [k])) = k;
887 k = p;
532 } 888 }
533 889
534 heap [k] = w; 890 heap [k] = w;
535 ((W)heap [k])->active = k + 1; 891 ev_active (ANHE_w (heap [k])) = k;
536
537} 892}
538 893
539static void 894/* away from the root */
895void inline_speed
540downheap (WT *heap, int N, int k) 896downheap (ANHE *heap, int N, int k)
541{ 897{
542 WT w = heap [k]; 898 ANHE he = heap [k];
543 899
544 while (k < (N >> 1)) 900 for (;;)
545 { 901 {
546 int j = k << 1; 902 int c = k << 1;
547 903
548 if (j + 1 < N && heap [j]->at > heap [j + 1]->at) 904 if (c > N)
549 ++j;
550
551 if (w->at <= heap [j]->at)
552 break; 905 break;
553 906
907 c += c + 1 < N && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
908 ? 1 : 0;
909
910 if (w->at <= ANHE_at (heap [c]))
911 break;
912
554 heap [k] = heap [j]; 913 heap [k] = heap [c];
555 ((W)heap [k])->active = k + 1; 914 ev_active (ANHE_w (heap [k])) = k;
915
556 k = j; 916 k = c;
557 } 917 }
558 918
559 heap [k] = w; 919 heap [k] = he;
560 ((W)heap [k])->active = k + 1; 920 ev_active (ANHE_w (he)) = k;
921}
922#endif
923
924void inline_size
925adjustheap (ANHE *heap, int N, int k)
926{
927 upheap (heap, k);
928 downheap (heap, N, k);
561} 929}
562 930
563/*****************************************************************************/ 931/*****************************************************************************/
564 932
565typedef struct 933typedef struct
566{ 934{
567 WL head; 935 WL head;
568 sig_atomic_t volatile gotsig; 936 EV_ATOMIC_T gotsig;
569} ANSIG; 937} ANSIG;
570 938
571static ANSIG *signals; 939static ANSIG *signals;
572static int signalmax; 940static int signalmax;
573 941
574static int sigpipe [2]; 942static EV_ATOMIC_T gotsig;
575static sig_atomic_t volatile gotsig;
576static struct ev_io sigev;
577 943
578static void 944void inline_size
579signals_init (ANSIG *base, int count) 945signals_init (ANSIG *base, int count)
580{ 946{
581 while (count--) 947 while (count--)
582 { 948 {
583 base->head = 0; 949 base->head = 0;
… …
585 951
586 ++base; 952 ++base;
587 } 953 }
588} 954}
589 955
956/*****************************************************************************/
957
958void inline_speed
959fd_intern (int fd)
960{
961#ifdef _WIN32
962 int arg = 1;
963 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
964#else
965 fcntl (fd, F_SETFD, FD_CLOEXEC);
966 fcntl (fd, F_SETFL, O_NONBLOCK);
967#endif
968}
969
970static void noinline
971evpipe_init (EV_P)
972{
973 if (!ev_is_active (&pipeev))
974 {
975#if EV_USE_EVENTFD
976 if ((evfd = eventfd (0, 0)) >= 0)
977 {
978 evpipe [0] = -1;
979 fd_intern (evfd);
980 ev_io_set (&pipeev, evfd, EV_READ);
981 }
982 else
983#endif
984 {
985 while (pipe (evpipe))
986 syserr ("(libev) error creating signal/async pipe");
987
988 fd_intern (evpipe [0]);
989 fd_intern (evpipe [1]);
990 ev_io_set (&pipeev, evpipe [0], EV_READ);
991 }
992
993 ev_io_start (EV_A_ &pipeev);
994 ev_unref (EV_A); /* watcher should not keep loop alive */
995 }
996}
997
998void inline_size
999evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1000{
1001 if (!*flag)
1002 {
1003 int old_errno = errno; /* save errno because write might clobber it */
1004
1005 *flag = 1;
1006
1007#if EV_USE_EVENTFD
1008 if (evfd >= 0)
1009 {
1010 uint64_t counter = 1;
1011 write (evfd, &counter, sizeof (uint64_t));
1012 }
1013 else
1014#endif
1015 write (evpipe [1], &old_errno, 1);
1016
1017 errno = old_errno;
1018 }
1019}
1020
590static void 1021static void
1022pipecb (EV_P_ ev_io *iow, int revents)
1023{
1024#if EV_USE_EVENTFD
1025 if (evfd >= 0)
1026 {
1027 uint64_t counter;
1028 read (evfd, &counter, sizeof (uint64_t));
1029 }
1030 else
1031#endif
1032 {
1033 char dummy;
1034 read (evpipe [0], &dummy, 1);
1035 }
1036
1037 if (gotsig && ev_is_default_loop (EV_A))
1038 {
1039 int signum;
1040 gotsig = 0;
1041
1042 for (signum = signalmax; signum--; )
1043 if (signals [signum].gotsig)
1044 ev_feed_signal_event (EV_A_ signum + 1);
1045 }
1046
1047#if EV_ASYNC_ENABLE
1048 if (gotasync)
1049 {
1050 int i;
1051 gotasync = 0;
1052
1053 for (i = asynccnt; i--; )
1054 if (asyncs [i]->sent)
1055 {
1056 asyncs [i]->sent = 0;
1057 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1058 }
1059 }
1060#endif
1061}
1062
1063/*****************************************************************************/
1064
1065static void
591sighandler (int signum) 1066ev_sighandler (int signum)
592{ 1067{
1068#if EV_MULTIPLICITY
1069 struct ev_loop *loop = &default_loop_struct;
1070#endif
1071
593#if WIN32 1072#if _WIN32
594 signal (signum, sighandler); 1073 signal (signum, ev_sighandler);
595#endif 1074#endif
596 1075
597 signals [signum - 1].gotsig = 1; 1076 signals [signum - 1].gotsig = 1;
598 1077 evpipe_write (EV_A_ &gotsig);
599 if (!gotsig)
600 {
601 int old_errno = errno;
602 gotsig = 1;
603 write (sigpipe [1], &signum, 1);
604 errno = old_errno;
605 }
606} 1078}
607 1079
608static void 1080void noinline
609sigcb (EV_P_ struct ev_io *iow, int revents) 1081ev_feed_signal_event (EV_P_ int signum)
610{ 1082{
611 WL w; 1083 WL w;
1084
1085#if EV_MULTIPLICITY
1086 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
1087#endif
1088
612 int signum; 1089 --signum;
613 1090
614 read (sigpipe [0], &revents, 1); 1091 if (signum < 0 || signum >= signalmax)
615 gotsig = 0; 1092 return;
616 1093
617 for (signum = signalmax; signum--; )
618 if (signals [signum].gotsig)
619 {
620 signals [signum].gotsig = 0; 1094 signals [signum].gotsig = 0;
621 1095
622 for (w = signals [signum].head; w; w = w->next) 1096 for (w = signals [signum].head; w; w = w->next)
623 event (EV_A_ (W)w, EV_SIGNAL); 1097 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
624 }
625}
626
627static void
628siginit (EV_P)
629{
630#ifndef WIN32
631 fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);
632 fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
633
634 /* rather than sort out wether we really need nb, set it */
635 fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
636 fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
637#endif
638
639 ev_io_set (&sigev, sigpipe [0], EV_READ);
640 ev_io_start (EV_A_ &sigev);
641 ev_unref (EV_A); /* child watcher should not keep loop alive */
642} 1098}
643 1099
644/*****************************************************************************/ 1100/*****************************************************************************/
645 1101
646static struct ev_child *childs [PID_HASHSIZE]; 1102static WL childs [EV_PID_HASHSIZE];
647 1103
648#ifndef WIN32 1104#ifndef _WIN32
649 1105
650static struct ev_signal childev; 1106static ev_signal childev;
1107
1108#ifndef WIFCONTINUED
1109# define WIFCONTINUED(status) 0
1110#endif
1111
1112void inline_speed
1113child_reap (EV_P_ int chain, int pid, int status)
1114{
1115 ev_child *w;
1116 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1117
1118 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
1119 {
1120 if ((w->pid == pid || !w->pid)
1121 && (!traced || (w->flags & 1)))
1122 {
1123 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
1124 w->rpid = pid;
1125 w->rstatus = status;
1126 ev_feed_event (EV_A_ (W)w, EV_CHILD);
1127 }
1128 }
1129}
651 1130
652#ifndef WCONTINUED 1131#ifndef WCONTINUED
653# define WCONTINUED 0 1132# define WCONTINUED 0
654#endif 1133#endif
655 1134
656static void 1135static void
657child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
658{
659 struct ev_child *w;
660
661 for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
662 if (w->pid == pid || !w->pid)
663 {
664 ev_priority (w) = ev_priority (sw); /* need to do it *now* */
665 w->rpid = pid;
666 w->rstatus = status;
667 event (EV_A_ (W)w, EV_CHILD);
668 }
669}
670
671static void
672childcb (EV_P_ struct ev_signal *sw, int revents) 1136childcb (EV_P_ ev_signal *sw, int revents)
673{ 1137{
674 int pid, status; 1138 int pid, status;
675 1139
1140 /* some systems define WCONTINUED but then fail to support it (linux 2.4) */
676 if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) 1141 if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
677 { 1142 if (!WCONTINUED
1143 || errno != EINVAL
1144 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
1145 return;
1146
678 /* make sure we are called again until all childs have been reaped */ 1147 /* make sure we are called again until all children have been reaped */
1148 /* we need to do it this way so that the callback gets called before we continue */
679 event (EV_A_ (W)sw, EV_SIGNAL); 1149 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
680 1150
681 child_reap (EV_A_ sw, pid, pid, status); 1151 child_reap (EV_A_ pid, pid, status);
1152 if (EV_PID_HASHSIZE > 1)
682 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */ 1153 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
683 }
684} 1154}
685 1155
686#endif 1156#endif
687 1157
688/*****************************************************************************/ 1158/*****************************************************************************/
689 1159
1160#if EV_USE_PORT
1161# include "ev_port.c"
1162#endif
690#if EV_USE_KQUEUE 1163#if EV_USE_KQUEUE
691# include "ev_kqueue.c" 1164# include "ev_kqueue.c"
692#endif 1165#endif
693#if EV_USE_EPOLL 1166#if EV_USE_EPOLL
694# include "ev_epoll.c" 1167# include "ev_epoll.c"
… …
711{ 1184{
712 return EV_VERSION_MINOR; 1185 return EV_VERSION_MINOR;
713} 1186}
714 1187
715/* return true if we are running with elevated privileges and should ignore env variables */ 1188/* return true if we are running with elevated privileges and should ignore env variables */
716static int 1189int inline_size
717enable_secure (void) 1190enable_secure (void)
718{ 1191{
719#ifdef WIN32 1192#ifdef _WIN32
720 return 0; 1193 return 0;
721#else 1194#else
722 return getuid () != geteuid () 1195 return getuid () != geteuid ()
723 || getgid () != getegid (); 1196 || getgid () != getegid ();
724#endif 1197#endif
725} 1198}
726 1199
727int 1200unsigned int
728ev_method (EV_P) 1201ev_supported_backends (void)
729{ 1202{
730 return method; 1203 unsigned int flags = 0;
731}
732 1204
733static void 1205 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
734loop_init (EV_P_ int methods) 1206 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
1207 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
1208 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
1209 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1210
1211 return flags;
1212}
1213
1214unsigned int
1215ev_recommended_backends (void)
735{ 1216{
736 if (!method) 1217 unsigned int flags = ev_supported_backends ();
1218
1219#ifndef __NetBSD__
1220 /* kqueue is borked on everything but netbsd apparently */
1221 /* it usually doesn't work correctly on anything but sockets and pipes */
1222 flags &= ~EVBACKEND_KQUEUE;
1223#endif
1224#ifdef __APPLE__
1225 // flags &= ~EVBACKEND_KQUEUE; for documentation
1226 flags &= ~EVBACKEND_POLL;
1227#endif
1228
1229 return flags;
1230}
1231
1232unsigned int
1233ev_embeddable_backends (void)
1234{
1235 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1236
1237 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1238 /* please fix it and tell me how to detect the fix */
1239 flags &= ~EVBACKEND_EPOLL;
1240
1241 return flags;
1242}
1243
1244unsigned int
1245ev_backend (EV_P)
1246{
1247 return backend;
1248}
1249
1250unsigned int
1251ev_loop_count (EV_P)
1252{
1253 return loop_count;
1254}
1255
1256void
1257ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1258{
1259 io_blocktime = interval;
1260}
1261
1262void
1263ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1264{
1265 timeout_blocktime = interval;
1266}
1267
1268static void noinline
1269loop_init (EV_P_ unsigned int flags)
1270{
1271 if (!backend)
737 { 1272 {
738#if EV_USE_MONOTONIC 1273#if EV_USE_MONOTONIC
739 { 1274 {
740 struct timespec ts; 1275 struct timespec ts;
741 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1276 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
742 have_monotonic = 1; 1277 have_monotonic = 1;
743 } 1278 }
744#endif 1279#endif
745 1280
746 rt_now = ev_time (); 1281 ev_rt_now = ev_time ();
747 mn_now = get_clock (); 1282 mn_now = get_clock ();
748 now_floor = mn_now; 1283 now_floor = mn_now;
749 rtmn_diff = rt_now - mn_now; 1284 rtmn_diff = ev_rt_now - mn_now;
750 1285
751 if (methods == EVMETHOD_AUTO) 1286 io_blocktime = 0.;
752 if (!enable_secure () && getenv ("LIBEV_METHODS")) 1287 timeout_blocktime = 0.;
1288 backend = 0;
1289 backend_fd = -1;
1290 gotasync = 0;
1291#if EV_USE_INOTIFY
1292 fs_fd = -2;
1293#endif
1294
1295 /* pid check not overridable via env */
1296#ifndef _WIN32
1297 if (flags & EVFLAG_FORKCHECK)
1298 curpid = getpid ();
1299#endif
1300
1301 if (!(flags & EVFLAG_NOENV)
1302 && !enable_secure ()
1303 && getenv ("LIBEV_FLAGS"))
753 methods = atoi (getenv ("LIBEV_METHODS")); 1304 flags = atoi (getenv ("LIBEV_FLAGS"));
754 else
755 methods = EVMETHOD_ANY;
756 1305
757 method = 0; 1306 if (!(flags & 0x0000ffffU))
758#if EV_USE_WIN32 1307 flags |= ev_recommended_backends ();
759 if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods); 1308
1309#if EV_USE_PORT
1310 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
760#endif 1311#endif
761#if EV_USE_KQUEUE 1312#if EV_USE_KQUEUE
762 if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods); 1313 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
763#endif 1314#endif
764#if EV_USE_EPOLL 1315#if EV_USE_EPOLL
765 if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods); 1316 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
766#endif 1317#endif
767#if EV_USE_POLL 1318#if EV_USE_POLL
768 if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods); 1319 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
769#endif 1320#endif
770#if EV_USE_SELECT 1321#if EV_USE_SELECT
771 if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods); 1322 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
772#endif 1323#endif
773 1324
774 ev_watcher_init (&sigev, sigcb); 1325 ev_init (&pipeev, pipecb);
775 ev_set_priority (&sigev, EV_MAXPRI); 1326 ev_set_priority (&pipeev, EV_MAXPRI);
776 } 1327 }
777} 1328}
778 1329
779void 1330static void noinline
780loop_destroy (EV_P) 1331loop_destroy (EV_P)
781{ 1332{
782 int i; 1333 int i;
783 1334
1335 if (ev_is_active (&pipeev))
1336 {
1337 ev_ref (EV_A); /* signal watcher */
1338 ev_io_stop (EV_A_ &pipeev);
1339
1340#if EV_USE_EVENTFD
1341 if (evfd >= 0)
1342 close (evfd);
1343#endif
1344
1345 if (evpipe [0] >= 0)
1346 {
1347 close (evpipe [0]);
1348 close (evpipe [1]);
1349 }
1350 }
1351
784#if EV_USE_WIN32 1352#if EV_USE_INOTIFY
785 if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A); 1353 if (fs_fd >= 0)
1354 close (fs_fd);
1355#endif
1356
1357 if (backend_fd >= 0)
1358 close (backend_fd);
1359
1360#if EV_USE_PORT
1361 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
786#endif 1362#endif
787#if EV_USE_KQUEUE 1363#if EV_USE_KQUEUE
788 if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A); 1364 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
789#endif 1365#endif
790#if EV_USE_EPOLL 1366#if EV_USE_EPOLL
791 if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A); 1367 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
792#endif 1368#endif
793#if EV_USE_POLL 1369#if EV_USE_POLL
794 if (method == EVMETHOD_POLL ) poll_destroy (EV_A); 1370 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
795#endif 1371#endif
796#if EV_USE_SELECT 1372#if EV_USE_SELECT
797 if (method == EVMETHOD_SELECT) select_destroy (EV_A); 1373 if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
798#endif 1374#endif
799 1375
800 for (i = NUMPRI; i--; ) 1376 for (i = NUMPRI; i--; )
1377 {
801 array_free (pending, [i]); 1378 array_free (pending, [i]);
1379#if EV_IDLE_ENABLE
1380 array_free (idle, [i]);
1381#endif
1382 }
1383
1384 ev_free (anfds); anfdmax = 0;
802 1385
803 /* have to use the microsoft-never-gets-it-right macro */ 1386 /* have to use the microsoft-never-gets-it-right macro */
804 array_free_microshit (fdchange); 1387 array_free (fdchange, EMPTY);
805 array_free_microshit (timer); 1388 array_free (timer, EMPTY);
806 array_free_microshit (periodic); 1389#if EV_PERIODIC_ENABLE
807 array_free_microshit (idle); 1390 array_free (periodic, EMPTY);
808 array_free_microshit (prepare); 1391#endif
809 array_free_microshit (check); 1392#if EV_FORK_ENABLE
1393 array_free (fork, EMPTY);
1394#endif
1395 array_free (prepare, EMPTY);
1396 array_free (check, EMPTY);
1397#if EV_ASYNC_ENABLE
1398 array_free (async, EMPTY);
1399#endif
810 1400
811 method = 0; 1401 backend = 0;
812} 1402}
813 1403
814static void 1404#if EV_USE_INOTIFY
1405void inline_size infy_fork (EV_P);
1406#endif
1407
1408void inline_size
815loop_fork (EV_P) 1409loop_fork (EV_P)
816{ 1410{
1411#if EV_USE_PORT
1412 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1413#endif
1414#if EV_USE_KQUEUE
1415 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
1416#endif
817#if EV_USE_EPOLL 1417#if EV_USE_EPOLL
818 if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A); 1418 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
819#endif 1419#endif
820#if EV_USE_KQUEUE 1420#if EV_USE_INOTIFY
821 if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A); 1421 infy_fork (EV_A);
822#endif 1422#endif
823 1423
824 if (ev_is_active (&sigev)) 1424 if (ev_is_active (&pipeev))
825 { 1425 {
826 /* default loop */ 1426 /* this "locks" the handlers against writing to the pipe */
1427 /* while we modify the fd vars */
1428 gotsig = 1;
1429#if EV_ASYNC_ENABLE
1430 gotasync = 1;
1431#endif
827 1432
828 ev_ref (EV_A); 1433 ev_ref (EV_A);
829 ev_io_stop (EV_A_ &sigev); 1434 ev_io_stop (EV_A_ &pipeev);
1435
1436#if EV_USE_EVENTFD
1437 if (evfd >= 0)
1438 close (evfd);
1439#endif
1440
1441 if (evpipe [0] >= 0)
1442 {
830 close (sigpipe [0]); 1443 close (evpipe [0]);
831 close (sigpipe [1]); 1444 close (evpipe [1]);
1445 }
832 1446
833 while (ev_pipe (sigpipe))
834 syserr ("(libev) error creating pipe");
835
836 siginit (EV_A); 1447 evpipe_init (EV_A);
1448 /* now iterate over everything, in case we missed something */
1449 pipecb (EV_A_ &pipeev, EV_READ);
837 } 1450 }
838 1451
839 postfork = 0; 1452 postfork = 0;
840} 1453}
841 1454
842#if EV_MULTIPLICITY 1455#if EV_MULTIPLICITY
843struct ev_loop * 1456struct ev_loop *
844ev_loop_new (int methods) 1457ev_loop_new (unsigned int flags)
845{ 1458{
846 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 1459 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
847 1460
848 memset (loop, 0, sizeof (struct ev_loop)); 1461 memset (loop, 0, sizeof (struct ev_loop));
849 1462
850 loop_init (EV_A_ methods); 1463 loop_init (EV_A_ flags);
851 1464
852 if (ev_method (EV_A)) 1465 if (ev_backend (EV_A))
853 return loop; 1466 return loop;
854 1467
855 return 0; 1468 return 0;
856} 1469}
857 1470
… …
863} 1476}
864 1477
865void 1478void
866ev_loop_fork (EV_P) 1479ev_loop_fork (EV_P)
867{ 1480{
868 postfork = 1; 1481 postfork = 1; /* must be in line with ev_default_fork */
869} 1482}
870
871#endif 1483#endif
872 1484
873#if EV_MULTIPLICITY 1485#if EV_MULTIPLICITY
874struct ev_loop default_loop_struct;
875static struct ev_loop *default_loop;
876
877struct ev_loop * 1486struct ev_loop *
1487ev_default_loop_init (unsigned int flags)
878#else 1488#else
879static int default_loop;
880
881int 1489int
1490ev_default_loop (unsigned int flags)
882#endif 1491#endif
883ev_default_loop (int methods)
884{ 1492{
885 if (sigpipe [0] == sigpipe [1])
886 if (ev_pipe (sigpipe))
887 return 0;
888
889 if (!default_loop) 1493 if (!ev_default_loop_ptr)
890 { 1494 {
891#if EV_MULTIPLICITY 1495#if EV_MULTIPLICITY
892 struct ev_loop *loop = default_loop = &default_loop_struct; 1496 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
893#else 1497#else
894 default_loop = 1; 1498 ev_default_loop_ptr = 1;
895#endif 1499#endif
896 1500
897 loop_init (EV_A_ methods); 1501 loop_init (EV_A_ flags);
898 1502
899 if (ev_method (EV_A)) 1503 if (ev_backend (EV_A))
900 { 1504 {
901 siginit (EV_A);
902
903#ifndef WIN32 1505#ifndef _WIN32
904 ev_signal_init (&childev, childcb, SIGCHLD); 1506 ev_signal_init (&childev, childcb, SIGCHLD);
905 ev_set_priority (&childev, EV_MAXPRI); 1507 ev_set_priority (&childev, EV_MAXPRI);
906 ev_signal_start (EV_A_ &childev); 1508 ev_signal_start (EV_A_ &childev);
907 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1509 ev_unref (EV_A); /* child watcher should not keep loop alive */
908#endif 1510#endif
909 } 1511 }
910 else 1512 else
911 default_loop = 0; 1513 ev_default_loop_ptr = 0;
912 } 1514 }
913 1515
914 return default_loop; 1516 return ev_default_loop_ptr;
915} 1517}
916 1518
917void 1519void
918ev_default_destroy (void) 1520ev_default_destroy (void)
919{ 1521{
920#if EV_MULTIPLICITY 1522#if EV_MULTIPLICITY
921 struct ev_loop *loop = default_loop; 1523 struct ev_loop *loop = ev_default_loop_ptr;
922#endif 1524#endif
923 1525
924#ifndef WIN32 1526#ifndef _WIN32
925 ev_ref (EV_A); /* child watcher */ 1527 ev_ref (EV_A); /* child watcher */
926 ev_signal_stop (EV_A_ &childev); 1528 ev_signal_stop (EV_A_ &childev);
927#endif 1529#endif
928 1530
929 ev_ref (EV_A); /* signal watcher */
930 ev_io_stop (EV_A_ &sigev);
931
932 close (sigpipe [0]); sigpipe [0] = 0;
933 close (sigpipe [1]); sigpipe [1] = 0;
934
935 loop_destroy (EV_A); 1531 loop_destroy (EV_A);
936} 1532}
937 1533
938void 1534void
939ev_default_fork (void) 1535ev_default_fork (void)
940{ 1536{
941#if EV_MULTIPLICITY 1537#if EV_MULTIPLICITY
942 struct ev_loop *loop = default_loop; 1538 struct ev_loop *loop = ev_default_loop_ptr;
943#endif 1539#endif
944 1540
945 if (method) 1541 if (backend)
946 postfork = 1; 1542 postfork = 1; /* must be in line with ev_loop_fork */
947} 1543}
948 1544
949/*****************************************************************************/ 1545/*****************************************************************************/
950 1546
951static void 1547void
1548ev_invoke (EV_P_ void *w, int revents)
1549{
1550 EV_CB_INVOKE ((W)w, revents);
1551}
1552
1553void inline_speed
952call_pending (EV_P) 1554call_pending (EV_P)
953{ 1555{
954 int pri; 1556 int pri;
955 1557
956 for (pri = NUMPRI; pri--; ) 1558 for (pri = NUMPRI; pri--; )
957 while (pendingcnt [pri]) 1559 while (pendingcnt [pri])
958 { 1560 {
959 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 1561 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
960 1562
961 if (p->w) 1563 if (expect_true (p->w))
962 { 1564 {
1565 /*assert (("non-pending watcher on pending list", p->w->pending));*/
1566
963 p->w->pending = 0; 1567 p->w->pending = 0;
964 p->w->cb (EV_A_ p->w, p->events); 1568 EV_CB_INVOKE (p->w, p->events);
965 } 1569 }
966 } 1570 }
967} 1571}
968 1572
969static void 1573#if EV_IDLE_ENABLE
1574void inline_size
1575idle_reify (EV_P)
1576{
1577 if (expect_false (idleall))
1578 {
1579 int pri;
1580
1581 for (pri = NUMPRI; pri--; )
1582 {
1583 if (pendingcnt [pri])
1584 break;
1585
1586 if (idlecnt [pri])
1587 {
1588 queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
1589 break;
1590 }
1591 }
1592 }
1593}
1594#endif
1595
1596void inline_size
970timers_reify (EV_P) 1597timers_reify (EV_P)
971{ 1598{
972 while (timercnt && ((WT)timers [0])->at <= mn_now) 1599 while (timercnt && ANHE_at (timers [HEAP0]) <= mn_now)
973 { 1600 {
974 struct ev_timer *w = timers [0]; 1601 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
975 1602
976 assert (("inactive timer on timer heap detected", ev_is_active (w))); 1603 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
977 1604
978 /* first reschedule or stop timer */ 1605 /* first reschedule or stop timer */
979 if (w->repeat) 1606 if (w->repeat)
980 { 1607 {
981 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 1608 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
982 ((WT)w)->at = mn_now + w->repeat; 1609
1610 ev_at (w) += w->repeat;
1611 if (ev_at (w) < mn_now)
1612 ev_at (w) = mn_now;
1613
983 downheap ((WT *)timers, timercnt, 0); 1614 downheap (timers, timercnt, HEAP0);
984 } 1615 }
985 else 1616 else
986 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ 1617 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
987 1618
988 event (EV_A_ (W)w, EV_TIMEOUT); 1619 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
989 } 1620 }
990} 1621}
991 1622
992static void 1623#if EV_PERIODIC_ENABLE
1624void inline_size
993periodics_reify (EV_P) 1625periodics_reify (EV_P)
994{ 1626{
995 while (periodiccnt && ((WT)periodics [0])->at <= rt_now) 1627 while (periodiccnt && ANHE_at (periodics [HEAP0]) <= ev_rt_now)
996 { 1628 {
997 struct ev_periodic *w = periodics [0]; 1629 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
998 1630
999 assert (("inactive timer on periodic heap detected", ev_is_active (w))); 1631 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1000 1632
1001 /* first reschedule or stop timer */ 1633 /* first reschedule or stop timer */
1002 if (w->interval) 1634 if (w->reschedule_cb)
1003 { 1635 {
1004 ((WT)w)->at += floor ((rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval; 1636 ev_at (w) = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1005 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > rt_now)); 1637 assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) > ev_rt_now));
1006 downheap ((WT *)periodics, periodiccnt, 0); 1638 downheap (periodics, periodiccnt, 1);
1639 }
1640 else if (w->interval)
1641 {
1642 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1643 if (ev_at (w) - ev_rt_now <= TIME_EPSILON) ev_at (w) += w->interval;
1644 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ev_at (w) > ev_rt_now));
1645 downheap (periodics, periodiccnt, HEAP0);
1007 } 1646 }
1008 else 1647 else
1009 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 1648 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1010 1649
1011 event (EV_A_ (W)w, EV_PERIODIC); 1650 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1012 } 1651 }
1013} 1652}
1014 1653
1015static void 1654static void noinline
1016periodics_reschedule (EV_P) 1655periodics_reschedule (EV_P)
1017{ 1656{
1018 int i; 1657 int i;
1019 1658
1020 /* adjust periodics after time jump */ 1659 /* adjust periodics after time jump */
1021 for (i = 0; i < periodiccnt; ++i) 1660 for (i = HEAP0; i < periodiccnt + HEAP0; ++i)
1022 { 1661 {
1023 struct ev_periodic *w = periodics [i]; 1662 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1024 1663
1664 if (w->reschedule_cb)
1665 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1025 if (w->interval) 1666 else if (w->interval)
1667 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1668 }
1669
1670 /* now rebuild the heap, this for the 2-heap, inefficient for the 4-heap, but correct */
1671 for (i = periodiccnt >> 1; --i; )
1672 downheap (periodics, periodiccnt, i + HEAP0);
1673}
1674#endif
1675
1676void inline_speed
1677time_update (EV_P_ ev_tstamp max_block)
1678{
1679 int i;
1680
1681#if EV_USE_MONOTONIC
1682 if (expect_true (have_monotonic))
1683 {
1684 ev_tstamp odiff = rtmn_diff;
1685
1686 mn_now = get_clock ();
1687
1688 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
1689 /* interpolate in the meantime */
1690 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1026 { 1691 {
1027 ev_tstamp diff = ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval; 1692 ev_rt_now = rtmn_diff + mn_now;
1693 return;
1694 }
1028 1695
1029 if (fabs (diff) >= 1e-4) 1696 now_floor = mn_now;
1697 ev_rt_now = ev_time ();
1698
1699 /* loop a few times, before making important decisions.
1700 * on the choice of "4": one iteration isn't enough,
1701 * in case we get preempted during the calls to
1702 * ev_time and get_clock. a second call is almost guaranteed
1703 * to succeed in that case, though. and looping a few more times
1704 * doesn't hurt either as we only do this on time-jumps or
1705 * in the unlikely event of having been preempted here.
1706 */
1707 for (i = 4; --i; )
1708 {
1709 rtmn_diff = ev_rt_now - mn_now;
1710
1711 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP))
1712 return; /* all is well */
1713
1714 ev_rt_now = ev_time ();
1715 mn_now = get_clock ();
1716 now_floor = mn_now;
1717 }
1718
1719# if EV_PERIODIC_ENABLE
1720 periodics_reschedule (EV_A);
1721# endif
1722 /* no timer adjustment, as the monotonic clock doesn't jump */
1723 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1724 }
1725 else
1726#endif
1727 {
1728 ev_rt_now = ev_time ();
1729
1730 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1731 {
1732#if EV_PERIODIC_ENABLE
1733 periodics_reschedule (EV_A);
1734#endif
1735 /* adjust timers. this is easy, as the offset is the same for all of them */
1736 for (i = 0; i < timercnt; ++i)
1030 { 1737 {
1031 ev_periodic_stop (EV_A_ w); 1738 ANHE *he = timers + i + HEAP0;
1032 ev_periodic_start (EV_A_ w); 1739 ANHE_w (*he)->at += ev_rt_now - mn_now;
1033 1740 ANHE_at_set (*he);
1034 i = 0; /* restart loop, inefficient, but time jumps should be rare */
1035 } 1741 }
1036 } 1742 }
1037 }
1038}
1039 1743
1040inline int
1041time_update_monotonic (EV_P)
1042{
1043 mn_now = get_clock ();
1044
1045 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1046 {
1047 rt_now = rtmn_diff + mn_now;
1048 return 0;
1049 }
1050 else
1051 {
1052 now_floor = mn_now;
1053 rt_now = ev_time ();
1054 return 1;
1055 }
1056}
1057
1058static void
1059time_update (EV_P)
1060{
1061 int i;
1062
1063#if EV_USE_MONOTONIC
1064 if (expect_true (have_monotonic))
1065 {
1066 if (time_update_monotonic (EV_A))
1067 {
1068 ev_tstamp odiff = rtmn_diff;
1069
1070 for (i = 4; --i; ) /* loop a few times, before making important decisions */
1071 {
1072 rtmn_diff = rt_now - mn_now;
1073
1074 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1075 return; /* all is well */
1076
1077 rt_now = ev_time ();
1078 mn_now = get_clock ();
1079 now_floor = mn_now;
1080 }
1081
1082 periodics_reschedule (EV_A);
1083 /* no timer adjustment, as the monotonic clock doesn't jump */
1084 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1085 }
1086 }
1087 else
1088#endif
1089 {
1090 rt_now = ev_time ();
1091
1092 if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
1093 {
1094 periodics_reschedule (EV_A);
1095
1096 /* adjust timers. this is easy, as the offset is the same for all */
1097 for (i = 0; i < timercnt; ++i)
1098 ((WT)timers [i])->at += rt_now - mn_now;
1099 }
1100
1101 mn_now = rt_now; 1744 mn_now = ev_rt_now;
1102 } 1745 }
1103} 1746}
1104 1747
1105void 1748void
1106ev_ref (EV_P) 1749ev_ref (EV_P)
… …
1117static int loop_done; 1760static int loop_done;
1118 1761
1119void 1762void
1120ev_loop (EV_P_ int flags) 1763ev_loop (EV_P_ int flags)
1121{ 1764{
1122 double block; 1765 loop_done = EVUNLOOP_CANCEL;
1123 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0; 1766
1767 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
1124 1768
1125 do 1769 do
1126 { 1770 {
1771#ifndef _WIN32
1772 if (expect_false (curpid)) /* penalise the forking check even more */
1773 if (expect_false (getpid () != curpid))
1774 {
1775 curpid = getpid ();
1776 postfork = 1;
1777 }
1778#endif
1779
1780#if EV_FORK_ENABLE
1781 /* we might have forked, so queue fork handlers */
1782 if (expect_false (postfork))
1783 if (forkcnt)
1784 {
1785 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1786 call_pending (EV_A);
1787 }
1788#endif
1789
1127 /* queue check watchers (and execute them) */ 1790 /* queue prepare watchers (and execute them) */
1128 if (expect_false (preparecnt)) 1791 if (expect_false (preparecnt))
1129 { 1792 {
1130 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 1793 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1131 call_pending (EV_A); 1794 call_pending (EV_A);
1132 } 1795 }
1133 1796
1797 if (expect_false (!activecnt))
1798 break;
1799
1134 /* we might have forked, so reify kernel state if necessary */ 1800 /* we might have forked, so reify kernel state if necessary */
1135 if (expect_false (postfork)) 1801 if (expect_false (postfork))
1136 loop_fork (EV_A); 1802 loop_fork (EV_A);
1137 1803
1138 /* update fd-related kernel structures */ 1804 /* update fd-related kernel structures */
1139 fd_reify (EV_A); 1805 fd_reify (EV_A);
1140 1806
1141 /* calculate blocking time */ 1807 /* calculate blocking time */
1808 {
1809 ev_tstamp waittime = 0.;
1810 ev_tstamp sleeptime = 0.;
1142 1811
1143 /* we only need this for !monotonic clockor timers, but as we basically 1812 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1144 always have timers, we just calculate it always */
1145#if EV_USE_MONOTONIC
1146 if (expect_true (have_monotonic))
1147 time_update_monotonic (EV_A);
1148 else
1149#endif
1150 { 1813 {
1151 rt_now = ev_time (); 1814 /* update time to cancel out callback processing overhead */
1152 mn_now = rt_now; 1815 time_update (EV_A_ 1e100);
1153 }
1154 1816
1155 if (flags & EVLOOP_NONBLOCK || idlecnt)
1156 block = 0.;
1157 else
1158 {
1159 block = MAX_BLOCKTIME; 1817 waittime = MAX_BLOCKTIME;
1160 1818
1161 if (timercnt) 1819 if (timercnt)
1162 { 1820 {
1163 ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge; 1821 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
1164 if (block > to) block = to; 1822 if (waittime > to) waittime = to;
1165 } 1823 }
1166 1824
1825#if EV_PERIODIC_ENABLE
1167 if (periodiccnt) 1826 if (periodiccnt)
1168 { 1827 {
1169 ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge; 1828 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1170 if (block > to) block = to; 1829 if (waittime > to) waittime = to;
1171 } 1830 }
1831#endif
1172 1832
1173 if (block < 0.) block = 0.; 1833 if (expect_false (waittime < timeout_blocktime))
1834 waittime = timeout_blocktime;
1835
1836 sleeptime = waittime - backend_fudge;
1837
1838 if (expect_true (sleeptime > io_blocktime))
1839 sleeptime = io_blocktime;
1840
1841 if (sleeptime)
1842 {
1843 ev_sleep (sleeptime);
1844 waittime -= sleeptime;
1845 }
1174 } 1846 }
1175 1847
1176 method_poll (EV_A_ block); 1848 ++loop_count;
1849 backend_poll (EV_A_ waittime);
1177 1850
1178 /* update rt_now, do magic */ 1851 /* update ev_rt_now, do magic */
1179 time_update (EV_A); 1852 time_update (EV_A_ waittime + sleeptime);
1853 }
1180 1854
1181 /* queue pending timers and reschedule them */ 1855 /* queue pending timers and reschedule them */
1182 timers_reify (EV_A); /* relative timers called last */ 1856 timers_reify (EV_A); /* relative timers called last */
1857#if EV_PERIODIC_ENABLE
1183 periodics_reify (EV_A); /* absolute timers called first */ 1858 periodics_reify (EV_A); /* absolute timers called first */
1859#endif
1184 1860
1861#if EV_IDLE_ENABLE
1185 /* queue idle watchers unless io or timers are pending */ 1862 /* queue idle watchers unless other events are pending */
1186 if (!pendingcnt) 1863 idle_reify (EV_A);
1187 queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); 1864#endif
1188 1865
1189 /* queue check watchers, to be executed first */ 1866 /* queue check watchers, to be executed first */
1190 if (checkcnt) 1867 if (expect_false (checkcnt))
1191 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 1868 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1192 1869
1193 call_pending (EV_A); 1870 call_pending (EV_A);
1194 } 1871 }
1195 while (activecnt && !loop_done); 1872 while (expect_true (
1873 activecnt
1874 && !loop_done
1875 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
1876 ));
1196 1877
1197 if (loop_done != 2) 1878 if (loop_done == EVUNLOOP_ONE)
1198 loop_done = 0; 1879 loop_done = EVUNLOOP_CANCEL;
1199} 1880}
1200 1881
1201void 1882void
1202ev_unloop (EV_P_ int how) 1883ev_unloop (EV_P_ int how)
1203{ 1884{
1204 loop_done = how; 1885 loop_done = how;
1205} 1886}
1206 1887
1207/*****************************************************************************/ 1888/*****************************************************************************/
1208 1889
1209inline void 1890void inline_size
1210wlist_add (WL *head, WL elem) 1891wlist_add (WL *head, WL elem)
1211{ 1892{
1212 elem->next = *head; 1893 elem->next = *head;
1213 *head = elem; 1894 *head = elem;
1214} 1895}
1215 1896
1216inline void 1897void inline_size
1217wlist_del (WL *head, WL elem) 1898wlist_del (WL *head, WL elem)
1218{ 1899{
1219 while (*head) 1900 while (*head)
1220 { 1901 {
1221 if (*head == elem) 1902 if (*head == elem)
… …
1226 1907
1227 head = &(*head)->next; 1908 head = &(*head)->next;
1228 } 1909 }
1229} 1910}
1230 1911
1231inline void 1912void inline_speed
1232ev_clear_pending (EV_P_ W w) 1913clear_pending (EV_P_ W w)
1233{ 1914{
1234 if (w->pending) 1915 if (w->pending)
1235 { 1916 {
1236 pendings [ABSPRI (w)][w->pending - 1].w = 0; 1917 pendings [ABSPRI (w)][w->pending - 1].w = 0;
1237 w->pending = 0; 1918 w->pending = 0;
1238 } 1919 }
1239} 1920}
1240 1921
1241inline void 1922int
1923ev_clear_pending (EV_P_ void *w)
1924{
1925 W w_ = (W)w;
1926 int pending = w_->pending;
1927
1928 if (expect_true (pending))
1929 {
1930 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
1931 w_->pending = 0;
1932 p->w = 0;
1933 return p->events;
1934 }
1935 else
1936 return 0;
1937}
1938
1939void inline_size
1940pri_adjust (EV_P_ W w)
1941{
1942 int pri = w->priority;
1943 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1944 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1945 w->priority = pri;
1946}
1947
1948void inline_speed
1242ev_start (EV_P_ W w, int active) 1949ev_start (EV_P_ W w, int active)
1243{ 1950{
1244 if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; 1951 pri_adjust (EV_A_ w);
1245 if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1246
1247 w->active = active; 1952 w->active = active;
1248 ev_ref (EV_A); 1953 ev_ref (EV_A);
1249} 1954}
1250 1955
1251inline void 1956void inline_size
1252ev_stop (EV_P_ W w) 1957ev_stop (EV_P_ W w)
1253{ 1958{
1254 ev_unref (EV_A); 1959 ev_unref (EV_A);
1255 w->active = 0; 1960 w->active = 0;
1256} 1961}
1257 1962
1258/*****************************************************************************/ 1963/*****************************************************************************/
1259 1964
1260void 1965void noinline
1261ev_io_start (EV_P_ struct ev_io *w) 1966ev_io_start (EV_P_ ev_io *w)
1262{ 1967{
1263 int fd = w->fd; 1968 int fd = w->fd;
1264 1969
1265 if (ev_is_active (w)) 1970 if (expect_false (ev_is_active (w)))
1266 return; 1971 return;
1267 1972
1268 assert (("ev_io_start called with negative fd", fd >= 0)); 1973 assert (("ev_io_start called with negative fd", fd >= 0));
1269 1974
1270 ev_start (EV_A_ (W)w, 1); 1975 ev_start (EV_A_ (W)w, 1);
1271 array_needsize (anfds, anfdmax, fd + 1, anfds_init); 1976 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1272 wlist_add ((WL *)&anfds[fd].head, (WL)w); 1977 wlist_add (&anfds[fd].head, (WL)w);
1273 1978
1274 fd_change (EV_A_ fd); 1979 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);
1980 w->events &= ~EV_IOFDSET;
1275} 1981}
1276 1982
1277void 1983void noinline
1278ev_io_stop (EV_P_ struct ev_io *w) 1984ev_io_stop (EV_P_ ev_io *w)
1279{ 1985{
1280 ev_clear_pending (EV_A_ (W)w); 1986 clear_pending (EV_A_ (W)w);
1281 if (!ev_is_active (w)) 1987 if (expect_false (!ev_is_active (w)))
1282 return; 1988 return;
1283 1989
1990 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1991
1284 wlist_del ((WL *)&anfds[w->fd].head, (WL)w); 1992 wlist_del (&anfds[w->fd].head, (WL)w);
1285 ev_stop (EV_A_ (W)w); 1993 ev_stop (EV_A_ (W)w);
1286 1994
1287 fd_change (EV_A_ w->fd); 1995 fd_change (EV_A_ w->fd, 1);
1288} 1996}
1289 1997
1290void 1998void noinline
1291ev_timer_start (EV_P_ struct ev_timer *w) 1999ev_timer_start (EV_P_ ev_timer *w)
1292{ 2000{
1293 if (ev_is_active (w)) 2001 if (expect_false (ev_is_active (w)))
1294 return; 2002 return;
1295 2003
1296 ((WT)w)->at += mn_now; 2004 ev_at (w) += mn_now;
1297 2005
1298 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 2006 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1299 2007
1300 ev_start (EV_A_ (W)w, ++timercnt); 2008 ev_start (EV_A_ (W)w, ++timercnt + HEAP0 - 1);
1301 array_needsize (timers, timermax, timercnt, (void)); 2009 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);
1302 timers [timercnt - 1] = w; 2010 ANHE_w (timers [ev_active (w)]) = (WT)w;
1303 upheap ((WT *)timers, timercnt - 1); 2011 ANHE_at_set (timers [ev_active (w)]);
2012 upheap (timers, ev_active (w));
1304 2013
1305 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 2014 /*assert (("internal timer heap corruption", timers [ev_active (w)] == w));*/
1306} 2015}
1307 2016
1308void 2017void noinline
1309ev_timer_stop (EV_P_ struct ev_timer *w) 2018ev_timer_stop (EV_P_ ev_timer *w)
1310{ 2019{
1311 ev_clear_pending (EV_A_ (W)w); 2020 clear_pending (EV_A_ (W)w);
1312 if (!ev_is_active (w)) 2021 if (expect_false (!ev_is_active (w)))
1313 return; 2022 return;
1314 2023
2024 {
2025 int active = ev_active (w);
2026
1315 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 2027 assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
1316 2028
1317 if (((W)w)->active < timercnt--) 2029 if (expect_true (active < timercnt + HEAP0 - 1))
1318 { 2030 {
1319 timers [((W)w)->active - 1] = timers [timercnt]; 2031 timers [active] = timers [timercnt + HEAP0 - 1];
1320 downheap ((WT *)timers, timercnt, ((W)w)->active - 1); 2032 adjustheap (timers, timercnt, active);
1321 } 2033 }
1322 2034
1323 ((WT)w)->at = w->repeat; 2035 --timercnt;
2036 }
2037
2038 ev_at (w) -= mn_now;
1324 2039
1325 ev_stop (EV_A_ (W)w); 2040 ev_stop (EV_A_ (W)w);
1326} 2041}
1327 2042
1328void 2043void noinline
1329ev_timer_again (EV_P_ struct ev_timer *w) 2044ev_timer_again (EV_P_ ev_timer *w)
1330{ 2045{
1331 if (ev_is_active (w)) 2046 if (ev_is_active (w))
1332 { 2047 {
1333 if (w->repeat) 2048 if (w->repeat)
1334 { 2049 {
1335 ((WT)w)->at = mn_now + w->repeat; 2050 ev_at (w) = mn_now + w->repeat;
1336 downheap ((WT *)timers, timercnt, ((W)w)->active - 1); 2051 ANHE_at_set (timers [ev_active (w)]);
2052 adjustheap (timers, timercnt, ev_active (w));
1337 } 2053 }
1338 else 2054 else
1339 ev_timer_stop (EV_A_ w); 2055 ev_timer_stop (EV_A_ w);
1340 } 2056 }
1341 else if (w->repeat) 2057 else if (w->repeat)
2058 {
2059 ev_at (w) = w->repeat;
1342 ev_timer_start (EV_A_ w); 2060 ev_timer_start (EV_A_ w);
2061 }
1343} 2062}
1344 2063
1345void 2064#if EV_PERIODIC_ENABLE
2065void noinline
1346ev_periodic_start (EV_P_ struct ev_periodic *w) 2066ev_periodic_start (EV_P_ ev_periodic *w)
1347{ 2067{
1348 if (ev_is_active (w)) 2068 if (expect_false (ev_is_active (w)))
1349 return; 2069 return;
1350 2070
2071 if (w->reschedule_cb)
2072 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2073 else if (w->interval)
2074 {
1351 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 2075 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1352
1353 /* this formula differs from the one in periodic_reify because we do not always round up */ 2076 /* this formula differs from the one in periodic_reify because we do not always round up */
1354 if (w->interval)
1355 ((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval; 2077 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2078 }
2079 else
2080 ev_at (w) = w->offset;
1356 2081
1357 ev_start (EV_A_ (W)w, ++periodiccnt); 2082 ev_start (EV_A_ (W)w, ++periodiccnt + HEAP0 - 1);
1358 array_needsize (periodics, periodicmax, periodiccnt, (void)); 2083 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);
1359 periodics [periodiccnt - 1] = w; 2084 ANHE_w (periodics [ev_active (w)]) = (WT)w;
1360 upheap ((WT *)periodics, periodiccnt - 1); 2085 upheap (periodics, ev_active (w));
1361 2086
1362 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 2087 /*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
1363} 2088}
1364 2089
1365void 2090void noinline
1366ev_periodic_stop (EV_P_ struct ev_periodic *w) 2091ev_periodic_stop (EV_P_ ev_periodic *w)
1367{ 2092{
1368 ev_clear_pending (EV_A_ (W)w); 2093 clear_pending (EV_A_ (W)w);
1369 if (!ev_is_active (w)) 2094 if (expect_false (!ev_is_active (w)))
1370 return; 2095 return;
1371 2096
2097 {
2098 int active = ev_active (w);
2099
1372 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 2100 assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
1373 2101
1374 if (((W)w)->active < periodiccnt--) 2102 if (expect_true (active < periodiccnt + HEAP0 - 1))
1375 { 2103 {
1376 periodics [((W)w)->active - 1] = periodics [periodiccnt]; 2104 periodics [active] = periodics [periodiccnt + HEAP0 - 1];
1377 downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1); 2105 adjustheap (periodics, periodiccnt, active);
1378 } 2106 }
2107
2108 --periodiccnt;
2109 }
1379 2110
1380 ev_stop (EV_A_ (W)w); 2111 ev_stop (EV_A_ (W)w);
1381} 2112}
1382 2113
1383void 2114void noinline
1384ev_idle_start (EV_P_ struct ev_idle *w) 2115ev_periodic_again (EV_P_ ev_periodic *w)
1385{ 2116{
1386 if (ev_is_active (w)) 2117 /* TODO: use adjustheap and recalculation */
1387 return;
1388
1389 ev_start (EV_A_ (W)w, ++idlecnt);
1390 array_needsize (idles, idlemax, idlecnt, (void));
1391 idles [idlecnt - 1] = w;
1392}
1393
1394void
1395ev_idle_stop (EV_P_ struct ev_idle *w)
1396{
1397 ev_clear_pending (EV_A_ (W)w);
1398 if (ev_is_active (w))
1399 return;
1400
1401 idles [((W)w)->active - 1] = idles [--idlecnt];
1402 ev_stop (EV_A_ (W)w); 2118 ev_periodic_stop (EV_A_ w);
2119 ev_periodic_start (EV_A_ w);
1403} 2120}
1404 2121#endif
1405void
1406ev_prepare_start (EV_P_ struct ev_prepare *w)
1407{
1408 if (ev_is_active (w))
1409 return;
1410
1411 ev_start (EV_A_ (W)w, ++preparecnt);
1412 array_needsize (prepares, preparemax, preparecnt, (void));
1413 prepares [preparecnt - 1] = w;
1414}
1415
1416void
1417ev_prepare_stop (EV_P_ struct ev_prepare *w)
1418{
1419 ev_clear_pending (EV_A_ (W)w);
1420 if (ev_is_active (w))
1421 return;
1422
1423 prepares [((W)w)->active - 1] = prepares [--preparecnt];
1424 ev_stop (EV_A_ (W)w);
1425}
1426
1427void
1428ev_check_start (EV_P_ struct ev_check *w)
1429{
1430 if (ev_is_active (w))
1431 return;
1432
1433 ev_start (EV_A_ (W)w, ++checkcnt);
1434 array_needsize (checks, checkmax, checkcnt, (void));
1435 checks [checkcnt - 1] = w;
1436}
1437
1438void
1439ev_check_stop (EV_P_ struct ev_check *w)
1440{
1441 ev_clear_pending (EV_A_ (W)w);
1442 if (ev_is_active (w))
1443 return;
1444
1445 checks [((W)w)->active - 1] = checks [--checkcnt];
1446 ev_stop (EV_A_ (W)w);
1447}
1448 2122
1449#ifndef SA_RESTART 2123#ifndef SA_RESTART
1450# define SA_RESTART 0 2124# define SA_RESTART 0
1451#endif 2125#endif
1452 2126
1453void 2127void noinline
1454ev_signal_start (EV_P_ struct ev_signal *w) 2128ev_signal_start (EV_P_ ev_signal *w)
1455{ 2129{
1456#if EV_MULTIPLICITY 2130#if EV_MULTIPLICITY
1457 assert (("signal watchers are only supported in the default loop", loop == default_loop)); 2131 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1458#endif 2132#endif
1459 if (ev_is_active (w)) 2133 if (expect_false (ev_is_active (w)))
1460 return; 2134 return;
1461 2135
1462 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 2136 assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1463 2137
2138 evpipe_init (EV_A);
2139
2140 {
2141#ifndef _WIN32
2142 sigset_t full, prev;
2143 sigfillset (&full);
2144 sigprocmask (SIG_SETMASK, &full, &prev);
2145#endif
2146
2147 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
2148
2149#ifndef _WIN32
2150 sigprocmask (SIG_SETMASK, &prev, 0);
2151#endif
2152 }
2153
1464 ev_start (EV_A_ (W)w, 1); 2154 ev_start (EV_A_ (W)w, 1);
1465 array_needsize (signals, signalmax, w->signum, signals_init);
1466 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); 2155 wlist_add (&signals [w->signum - 1].head, (WL)w);
1467 2156
1468 if (!((WL)w)->next) 2157 if (!((WL)w)->next)
1469 { 2158 {
1470#if WIN32 2159#if _WIN32
1471 signal (w->signum, sighandler); 2160 signal (w->signum, ev_sighandler);
1472#else 2161#else
1473 struct sigaction sa; 2162 struct sigaction sa;
1474 sa.sa_handler = sighandler; 2163 sa.sa_handler = ev_sighandler;
1475 sigfillset (&sa.sa_mask); 2164 sigfillset (&sa.sa_mask);
1476 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 2165 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1477 sigaction (w->signum, &sa, 0); 2166 sigaction (w->signum, &sa, 0);
1478#endif 2167#endif
1479 } 2168 }
1480} 2169}
1481 2170
1482void 2171void noinline
1483ev_signal_stop (EV_P_ struct ev_signal *w) 2172ev_signal_stop (EV_P_ ev_signal *w)
1484{ 2173{
1485 ev_clear_pending (EV_A_ (W)w); 2174 clear_pending (EV_A_ (W)w);
1486 if (!ev_is_active (w)) 2175 if (expect_false (!ev_is_active (w)))
1487 return; 2176 return;
1488 2177
1489 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); 2178 wlist_del (&signals [w->signum - 1].head, (WL)w);
1490 ev_stop (EV_A_ (W)w); 2179 ev_stop (EV_A_ (W)w);
1491 2180
1492 if (!signals [w->signum - 1].head) 2181 if (!signals [w->signum - 1].head)
1493 signal (w->signum, SIG_DFL); 2182 signal (w->signum, SIG_DFL);
1494} 2183}
1495 2184
1496void 2185void
1497ev_child_start (EV_P_ struct ev_child *w) 2186ev_child_start (EV_P_ ev_child *w)
1498{ 2187{
1499#if EV_MULTIPLICITY 2188#if EV_MULTIPLICITY
1500 assert (("child watchers are only supported in the default loop", loop == default_loop)); 2189 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1501#endif 2190#endif
1502 if (ev_is_active (w)) 2191 if (expect_false (ev_is_active (w)))
1503 return; 2192 return;
1504 2193
1505 ev_start (EV_A_ (W)w, 1); 2194 ev_start (EV_A_ (W)w, 1);
1506 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 2195 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1507} 2196}
1508 2197
1509void 2198void
1510ev_child_stop (EV_P_ struct ev_child *w) 2199ev_child_stop (EV_P_ ev_child *w)
1511{ 2200{
1512 ev_clear_pending (EV_A_ (W)w); 2201 clear_pending (EV_A_ (W)w);
1513 if (ev_is_active (w)) 2202 if (expect_false (!ev_is_active (w)))
1514 return; 2203 return;
1515 2204
1516 wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 2205 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1517 ev_stop (EV_A_ (W)w); 2206 ev_stop (EV_A_ (W)w);
1518} 2207}
1519 2208
2209#if EV_STAT_ENABLE
2210
2211# ifdef _WIN32
2212# undef lstat
2213# define lstat(a,b) _stati64 (a,b)
2214# endif
2215
2216#define DEF_STAT_INTERVAL 5.0074891
2217#define MIN_STAT_INTERVAL 0.1074891
2218
2219static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2220
2221#if EV_USE_INOTIFY
2222# define EV_INOTIFY_BUFSIZE 8192
2223
2224static void noinline
2225infy_add (EV_P_ ev_stat *w)
2226{
2227 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);
2228
2229 if (w->wd < 0)
2230 {
2231 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2232
2233 /* monitor some parent directory for speedup hints */
2234 /* note that exceeding the hardcoded limit is not a correctness issue, */
2235 /* but an efficiency issue only */
2236 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2237 {
2238 char path [4096];
2239 strcpy (path, w->path);
2240
2241 do
2242 {
2243 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2244 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2245
2246 char *pend = strrchr (path, '/');
2247
2248 if (!pend)
2249 break; /* whoops, no '/', complain to your admin */
2250
2251 *pend = 0;
2252 w->wd = inotify_add_watch (fs_fd, path, mask);
2253 }
2254 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2255 }
2256 }
2257 else
2258 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2259
2260 if (w->wd >= 0)
2261 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2262}
2263
2264static void noinline
2265infy_del (EV_P_ ev_stat *w)
2266{
2267 int slot;
2268 int wd = w->wd;
2269
2270 if (wd < 0)
2271 return;
2272
2273 w->wd = -2;
2274 slot = wd & (EV_INOTIFY_HASHSIZE - 1);
2275 wlist_del (&fs_hash [slot].head, (WL)w);
2276
2277 /* remove this watcher, if others are watching it, they will rearm */
2278 inotify_rm_watch (fs_fd, wd);
2279}
2280
2281static void noinline
2282infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2283{
2284 if (slot < 0)
2285 /* overflow, need to check for all hahs slots */
2286 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2287 infy_wd (EV_A_ slot, wd, ev);
2288 else
2289 {
2290 WL w_;
2291
2292 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
2293 {
2294 ev_stat *w = (ev_stat *)w_;
2295 w_ = w_->next; /* lets us remove this watcher and all before it */
2296
2297 if (w->wd == wd || wd == -1)
2298 {
2299 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2300 {
2301 w->wd = -1;
2302 infy_add (EV_A_ w); /* re-add, no matter what */
2303 }
2304
2305 stat_timer_cb (EV_A_ &w->timer, 0);
2306 }
2307 }
2308 }
2309}
2310
2311static void
2312infy_cb (EV_P_ ev_io *w, int revents)
2313{
2314 char buf [EV_INOTIFY_BUFSIZE];
2315 struct inotify_event *ev = (struct inotify_event *)buf;
2316 int ofs;
2317 int len = read (fs_fd, buf, sizeof (buf));
2318
2319 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
2320 infy_wd (EV_A_ ev->wd, ev->wd, ev);
2321}
2322
2323void inline_size
2324infy_init (EV_P)
2325{
2326 if (fs_fd != -2)
2327 return;
2328
2329 fs_fd = inotify_init ();
2330
2331 if (fs_fd >= 0)
2332 {
2333 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2334 ev_set_priority (&fs_w, EV_MAXPRI);
2335 ev_io_start (EV_A_ &fs_w);
2336 }
2337}
2338
2339void inline_size
2340infy_fork (EV_P)
2341{
2342 int slot;
2343
2344 if (fs_fd < 0)
2345 return;
2346
2347 close (fs_fd);
2348 fs_fd = inotify_init ();
2349
2350 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2351 {
2352 WL w_ = fs_hash [slot].head;
2353 fs_hash [slot].head = 0;
2354
2355 while (w_)
2356 {
2357 ev_stat *w = (ev_stat *)w_;
2358 w_ = w_->next; /* lets us add this watcher */
2359
2360 w->wd = -1;
2361
2362 if (fs_fd >= 0)
2363 infy_add (EV_A_ w); /* re-add, no matter what */
2364 else
2365 ev_timer_start (EV_A_ &w->timer);
2366 }
2367
2368 }
2369}
2370
2371#endif
2372
2373void
2374ev_stat_stat (EV_P_ ev_stat *w)
2375{
2376 if (lstat (w->path, &w->attr) < 0)
2377 w->attr.st_nlink = 0;
2378 else if (!w->attr.st_nlink)
2379 w->attr.st_nlink = 1;
2380}
2381
2382static void noinline
2383stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2384{
2385 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2386
2387 /* we copy this here each the time so that */
2388 /* prev has the old value when the callback gets invoked */
2389 w->prev = w->attr;
2390 ev_stat_stat (EV_A_ w);
2391
2392 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2393 if (
2394 w->prev.st_dev != w->attr.st_dev
2395 || w->prev.st_ino != w->attr.st_ino
2396 || w->prev.st_mode != w->attr.st_mode
2397 || w->prev.st_nlink != w->attr.st_nlink
2398 || w->prev.st_uid != w->attr.st_uid
2399 || w->prev.st_gid != w->attr.st_gid
2400 || w->prev.st_rdev != w->attr.st_rdev
2401 || w->prev.st_size != w->attr.st_size
2402 || w->prev.st_atime != w->attr.st_atime
2403 || w->prev.st_mtime != w->attr.st_mtime
2404 || w->prev.st_ctime != w->attr.st_ctime
2405 ) {
2406 #if EV_USE_INOTIFY
2407 infy_del (EV_A_ w);
2408 infy_add (EV_A_ w);
2409 ev_stat_stat (EV_A_ w); /* avoid race... */
2410 #endif
2411
2412 ev_feed_event (EV_A_ w, EV_STAT);
2413 }
2414}
2415
2416void
2417ev_stat_start (EV_P_ ev_stat *w)
2418{
2419 if (expect_false (ev_is_active (w)))
2420 return;
2421
2422 /* since we use memcmp, we need to clear any padding data etc. */
2423 memset (&w->prev, 0, sizeof (ev_statdata));
2424 memset (&w->attr, 0, sizeof (ev_statdata));
2425
2426 ev_stat_stat (EV_A_ w);
2427
2428 if (w->interval < MIN_STAT_INTERVAL)
2429 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2430
2431 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
2432 ev_set_priority (&w->timer, ev_priority (w));
2433
2434#if EV_USE_INOTIFY
2435 infy_init (EV_A);
2436
2437 if (fs_fd >= 0)
2438 infy_add (EV_A_ w);
2439 else
2440#endif
2441 ev_timer_start (EV_A_ &w->timer);
2442
2443 ev_start (EV_A_ (W)w, 1);
2444}
2445
2446void
2447ev_stat_stop (EV_P_ ev_stat *w)
2448{
2449 clear_pending (EV_A_ (W)w);
2450 if (expect_false (!ev_is_active (w)))
2451 return;
2452
2453#if EV_USE_INOTIFY
2454 infy_del (EV_A_ w);
2455#endif
2456 ev_timer_stop (EV_A_ &w->timer);
2457
2458 ev_stop (EV_A_ (W)w);
2459}
2460#endif
2461
2462#if EV_IDLE_ENABLE
2463void
2464ev_idle_start (EV_P_ ev_idle *w)
2465{
2466 if (expect_false (ev_is_active (w)))
2467 return;
2468
2469 pri_adjust (EV_A_ (W)w);
2470
2471 {
2472 int active = ++idlecnt [ABSPRI (w)];
2473
2474 ++idleall;
2475 ev_start (EV_A_ (W)w, active);
2476
2477 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2478 idles [ABSPRI (w)][active - 1] = w;
2479 }
2480}
2481
2482void
2483ev_idle_stop (EV_P_ ev_idle *w)
2484{
2485 clear_pending (EV_A_ (W)w);
2486 if (expect_false (!ev_is_active (w)))
2487 return;
2488
2489 {
2490 int active = ev_active (w);
2491
2492 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2493 ev_active (idles [ABSPRI (w)][active - 1]) = active;
2494
2495 ev_stop (EV_A_ (W)w);
2496 --idleall;
2497 }
2498}
2499#endif
2500
2501void
2502ev_prepare_start (EV_P_ ev_prepare *w)
2503{
2504 if (expect_false (ev_is_active (w)))
2505 return;
2506
2507 ev_start (EV_A_ (W)w, ++preparecnt);
2508 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2509 prepares [preparecnt - 1] = w;
2510}
2511
2512void
2513ev_prepare_stop (EV_P_ ev_prepare *w)
2514{
2515 clear_pending (EV_A_ (W)w);
2516 if (expect_false (!ev_is_active (w)))
2517 return;
2518
2519 {
2520 int active = ev_active (w);
2521
2522 prepares [active - 1] = prepares [--preparecnt];
2523 ev_active (prepares [active - 1]) = active;
2524 }
2525
2526 ev_stop (EV_A_ (W)w);
2527}
2528
2529void
2530ev_check_start (EV_P_ ev_check *w)
2531{
2532 if (expect_false (ev_is_active (w)))
2533 return;
2534
2535 ev_start (EV_A_ (W)w, ++checkcnt);
2536 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2537 checks [checkcnt - 1] = w;
2538}
2539
2540void
2541ev_check_stop (EV_P_ ev_check *w)
2542{
2543 clear_pending (EV_A_ (W)w);
2544 if (expect_false (!ev_is_active (w)))
2545 return;
2546
2547 {
2548 int active = ev_active (w);
2549
2550 checks [active - 1] = checks [--checkcnt];
2551 ev_active (checks [active - 1]) = active;
2552 }
2553
2554 ev_stop (EV_A_ (W)w);
2555}
2556
2557#if EV_EMBED_ENABLE
2558void noinline
2559ev_embed_sweep (EV_P_ ev_embed *w)
2560{
2561 ev_loop (w->other, EVLOOP_NONBLOCK);
2562}
2563
2564static void
2565embed_io_cb (EV_P_ ev_io *io, int revents)
2566{
2567 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2568
2569 if (ev_cb (w))
2570 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2571 else
2572 ev_loop (w->other, EVLOOP_NONBLOCK);
2573}
2574
2575static void
2576embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2577{
2578 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2579
2580 {
2581 struct ev_loop *loop = w->other;
2582
2583 while (fdchangecnt)
2584 {
2585 fd_reify (EV_A);
2586 ev_loop (EV_A_ EVLOOP_NONBLOCK);
2587 }
2588 }
2589}
2590
2591#if 0
2592static void
2593embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2594{
2595 ev_idle_stop (EV_A_ idle);
2596}
2597#endif
2598
2599void
2600ev_embed_start (EV_P_ ev_embed *w)
2601{
2602 if (expect_false (ev_is_active (w)))
2603 return;
2604
2605 {
2606 struct ev_loop *loop = w->other;
2607 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2608 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2609 }
2610
2611 ev_set_priority (&w->io, ev_priority (w));
2612 ev_io_start (EV_A_ &w->io);
2613
2614 ev_prepare_init (&w->prepare, embed_prepare_cb);
2615 ev_set_priority (&w->prepare, EV_MINPRI);
2616 ev_prepare_start (EV_A_ &w->prepare);
2617
2618 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2619
2620 ev_start (EV_A_ (W)w, 1);
2621}
2622
2623void
2624ev_embed_stop (EV_P_ ev_embed *w)
2625{
2626 clear_pending (EV_A_ (W)w);
2627 if (expect_false (!ev_is_active (w)))
2628 return;
2629
2630 ev_io_stop (EV_A_ &w->io);
2631 ev_prepare_stop (EV_A_ &w->prepare);
2632
2633 ev_stop (EV_A_ (W)w);
2634}
2635#endif
2636
2637#if EV_FORK_ENABLE
2638void
2639ev_fork_start (EV_P_ ev_fork *w)
2640{
2641 if (expect_false (ev_is_active (w)))
2642 return;
2643
2644 ev_start (EV_A_ (W)w, ++forkcnt);
2645 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2646 forks [forkcnt - 1] = w;
2647}
2648
2649void
2650ev_fork_stop (EV_P_ ev_fork *w)
2651{
2652 clear_pending (EV_A_ (W)w);
2653 if (expect_false (!ev_is_active (w)))
2654 return;
2655
2656 {
2657 int active = ev_active (w);
2658
2659 forks [active - 1] = forks [--forkcnt];
2660 ev_active (forks [active - 1]) = active;
2661 }
2662
2663 ev_stop (EV_A_ (W)w);
2664}
2665#endif
2666
2667#if EV_ASYNC_ENABLE
2668void
2669ev_async_start (EV_P_ ev_async *w)
2670{
2671 if (expect_false (ev_is_active (w)))
2672 return;
2673
2674 evpipe_init (EV_A);
2675
2676 ev_start (EV_A_ (W)w, ++asynccnt);
2677 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
2678 asyncs [asynccnt - 1] = w;
2679}
2680
2681void
2682ev_async_stop (EV_P_ ev_async *w)
2683{
2684 clear_pending (EV_A_ (W)w);
2685 if (expect_false (!ev_is_active (w)))
2686 return;
2687
2688 {
2689 int active = ev_active (w);
2690
2691 asyncs [active - 1] = asyncs [--asynccnt];
2692 ev_active (asyncs [active - 1]) = active;
2693 }
2694
2695 ev_stop (EV_A_ (W)w);
2696}
2697
2698void
2699ev_async_send (EV_P_ ev_async *w)
2700{
2701 w->sent = 1;
2702 evpipe_write (EV_A_ &gotasync);
2703}
2704#endif
2705
1520/*****************************************************************************/ 2706/*****************************************************************************/
1521 2707
1522struct ev_once 2708struct ev_once
1523{ 2709{
1524 struct ev_io io; 2710 ev_io io;
1525 struct ev_timer to; 2711 ev_timer to;
1526 void (*cb)(int revents, void *arg); 2712 void (*cb)(int revents, void *arg);
1527 void *arg; 2713 void *arg;
1528}; 2714};
1529 2715
1530static void 2716static void
… …
1539 2725
1540 cb (revents, arg); 2726 cb (revents, arg);
1541} 2727}
1542 2728
1543static void 2729static void
1544once_cb_io (EV_P_ struct ev_io *w, int revents) 2730once_cb_io (EV_P_ ev_io *w, int revents)
1545{ 2731{
1546 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 2732 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1547} 2733}
1548 2734
1549static void 2735static void
1550once_cb_to (EV_P_ struct ev_timer *w, int revents) 2736once_cb_to (EV_P_ ev_timer *w, int revents)
1551{ 2737{
1552 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 2738 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1553} 2739}
1554 2740
1555void 2741void
1556ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 2742ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1557{ 2743{
1558 struct ev_once *once = ev_malloc (sizeof (struct ev_once)); 2744 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1559 2745
1560 if (!once) 2746 if (expect_false (!once))
2747 {
1561 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 2748 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1562 else 2749 return;
1563 { 2750 }
2751
1564 once->cb = cb; 2752 once->cb = cb;
1565 once->arg = arg; 2753 once->arg = arg;
1566 2754
1567 ev_watcher_init (&once->io, once_cb_io); 2755 ev_init (&once->io, once_cb_io);
1568 if (fd >= 0) 2756 if (fd >= 0)
1569 { 2757 {
1570 ev_io_set (&once->io, fd, events); 2758 ev_io_set (&once->io, fd, events);
1571 ev_io_start (EV_A_ &once->io); 2759 ev_io_start (EV_A_ &once->io);
1572 } 2760 }
1573 2761
1574 ev_watcher_init (&once->to, once_cb_to); 2762 ev_init (&once->to, once_cb_to);
1575 if (timeout >= 0.) 2763 if (timeout >= 0.)
1576 { 2764 {
1577 ev_timer_set (&once->to, timeout, 0.); 2765 ev_timer_set (&once->to, timeout, 0.);
1578 ev_timer_start (EV_A_ &once->to); 2766 ev_timer_start (EV_A_ &once->to);
1579 }
1580 } 2767 }
1581} 2768}
1582 2769
2770#if EV_MULTIPLICITY
2771 #include "ev_wrap.h"
2772#endif
2773
2774#ifdef __cplusplus
2775}
2776#endif
2777

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