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Comparing libev/ev.c (file contents):
Revision 1.98 by root, Sun Nov 11 02:05:20 2007 UTC vs.
Revision 1.209 by root, Tue Feb 5 23:56:33 2008 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007,2008 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * modification, are permitted provided that the following conditions are 8 * tion, are permitted provided that the following conditions are met:
9 * met: 9 *
10 * 1. Redistributions of source code must retain the above copyright notice,
11 * this list of conditions and the following disclaimer.
12 *
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
22 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
23 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
24 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
25 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
26 * OF THE POSSIBILITY OF SUCH DAMAGE.
10 * 27 *
11 * * Redistributions of source code must retain the above copyright 28 * Alternatively, the contents of this file may be used under the terms of
12 * notice, this list of conditions and the following disclaimer. 29 * the GNU General Public License ("GPL") version 2 or any later version,
13 * 30 * in which case the provisions of the GPL are applicable instead of
14 * * Redistributions in binary form must reproduce the above 31 * the above. If you wish to allow the use of your version of this file
15 * copyright notice, this list of conditions and the following 32 * only under the terms of the GPL and not to allow others to use your
16 * disclaimer in the documentation and/or other materials provided 33 * version of this file under the BSD license, indicate your decision
17 * with the distribution. 34 * by deleting the provisions above and replace them with the notice
18 * 35 * and other provisions required by the GPL. If you do not delete the
19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 36 * provisions above, a recipient may use your version of this file under
20 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 37 * either the BSD or the GPL.
21 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
22 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
23 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
24 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
25 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
26 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
29 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 */ 38 */
31 39
32#ifdef __cplusplus 40#ifdef __cplusplus
33extern "C" { 41extern "C" {
34#endif 42#endif
35 43
36#ifndef EV_STANDALONE 44#ifndef EV_STANDALONE
45# ifdef EV_CONFIG_H
46# include EV_CONFIG_H
47# else
37# include "config.h" 48# include "config.h"
49# endif
38 50
39# if HAVE_CLOCK_GETTIME 51# if HAVE_CLOCK_GETTIME
40# ifndef EV_USE_MONOTONIC 52# ifndef EV_USE_MONOTONIC
41# define EV_USE_MONOTONIC 1 53# define EV_USE_MONOTONIC 1
42# endif 54# endif
43# ifndef EV_USE_REALTIME 55# ifndef EV_USE_REALTIME
44# define EV_USE_REALTIME 1 56# define EV_USE_REALTIME 1
45# endif 57# endif
58# else
59# ifndef EV_USE_MONOTONIC
60# define EV_USE_MONOTONIC 0
61# endif
62# ifndef EV_USE_REALTIME
63# define EV_USE_REALTIME 0
64# endif
46# endif 65# endif
47 66
48# if HAVE_SELECT && HAVE_SYS_SELECT_H && !defined (EV_USE_SELECT) 67# ifndef EV_USE_NANOSLEEP
68# if HAVE_NANOSLEEP
49# define EV_USE_SELECT 1 69# define EV_USE_NANOSLEEP 1
70# else
71# define EV_USE_NANOSLEEP 0
72# endif
50# endif 73# endif
51 74
52# if HAVE_POLL && HAVE_POLL_H && !defined (EV_USE_POLL) 75# ifndef EV_USE_SELECT
76# if HAVE_SELECT && HAVE_SYS_SELECT_H
53# define EV_USE_POLL 1 77# define EV_USE_SELECT 1
78# else
79# define EV_USE_SELECT 0
80# endif
54# endif 81# endif
55 82
56# if HAVE_EPOLL && HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H && !defined (EV_USE_EPOLL) 83# ifndef EV_USE_POLL
84# if HAVE_POLL && HAVE_POLL_H
57# define EV_USE_EPOLL 1 85# define EV_USE_POLL 1
86# else
87# define EV_USE_POLL 0
88# endif
58# endif 89# endif
59 90
91# ifndef EV_USE_EPOLL
92# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
93# define EV_USE_EPOLL 1
94# else
95# define EV_USE_EPOLL 0
96# endif
97# endif
98
99# ifndef EV_USE_KQUEUE
60# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H && !defined (EV_USE_KQUEUE) 100# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H
61# define EV_USE_KQUEUE 1 101# define EV_USE_KQUEUE 1
102# else
103# define EV_USE_KQUEUE 0
104# endif
105# endif
106
107# ifndef EV_USE_PORT
108# if HAVE_PORT_H && HAVE_PORT_CREATE
109# define EV_USE_PORT 1
110# else
111# define EV_USE_PORT 0
112# endif
113# endif
114
115# ifndef EV_USE_INOTIFY
116# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
117# define EV_USE_INOTIFY 1
118# else
119# define EV_USE_INOTIFY 0
120# endif
62# endif 121# endif
63 122
64#endif 123#endif
65 124
66#include <math.h> 125#include <math.h>
… …
75#include <sys/types.h> 134#include <sys/types.h>
76#include <time.h> 135#include <time.h>
77 136
78#include <signal.h> 137#include <signal.h>
79 138
80#ifndef WIN32
81# include <unistd.h>
82# include <sys/time.h>
83# include <sys/wait.h>
84#endif
85/**/
86
87#ifndef EV_USE_MONOTONIC
88# define EV_USE_MONOTONIC 1
89#endif
90
91#ifndef EV_USE_SELECT
92# define EV_USE_SELECT 1
93#endif
94
95#ifndef EV_USE_POLL
96# define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */
97#endif
98
99#ifndef EV_USE_EPOLL
100# define EV_USE_EPOLL 0
101#endif
102
103#ifndef EV_USE_KQUEUE
104# define EV_USE_KQUEUE 0
105#endif
106
107#ifndef EV_USE_WIN32
108# ifdef WIN32
109# define EV_USE_WIN32 0 /* it does not exist, use select */
110# undef EV_USE_SELECT
111# define EV_USE_SELECT 1
112# else
113# define EV_USE_WIN32 0
114# endif
115#endif
116
117#ifndef EV_USE_REALTIME
118# define EV_USE_REALTIME 1
119#endif
120
121/**/
122
123#ifndef CLOCK_MONOTONIC
124# undef EV_USE_MONOTONIC
125# define EV_USE_MONOTONIC 0
126#endif
127
128#ifndef CLOCK_REALTIME
129# undef EV_USE_REALTIME
130# define EV_USE_REALTIME 0
131#endif
132
133/**/
134
135#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
136#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */
137#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
138/*#define CLEANUP_INTERVAL 300. /* how often to try to free memory and re-check fds */
139
140#ifdef EV_H 139#ifdef EV_H
141# include EV_H 140# include EV_H
142#else 141#else
143# include "ev.h" 142# include "ev.h"
144#endif 143#endif
145 144
145#ifndef _WIN32
146# include <sys/time.h>
147# include <sys/wait.h>
148# include <unistd.h>
149#else
150# define WIN32_LEAN_AND_MEAN
151# include <windows.h>
152# ifndef EV_SELECT_IS_WINSOCKET
153# define EV_SELECT_IS_WINSOCKET 1
154# endif
155#endif
156
157/**/
158
159#ifndef EV_USE_MONOTONIC
160# define EV_USE_MONOTONIC 0
161#endif
162
163#ifndef EV_USE_REALTIME
164# define EV_USE_REALTIME 0
165#endif
166
167#ifndef EV_USE_NANOSLEEP
168# define EV_USE_NANOSLEEP 0
169#endif
170
171#ifndef EV_USE_SELECT
172# define EV_USE_SELECT 1
173#endif
174
175#ifndef EV_USE_POLL
176# ifdef _WIN32
177# define EV_USE_POLL 0
178# else
179# define EV_USE_POLL 1
180# endif
181#endif
182
183#ifndef EV_USE_EPOLL
184# define EV_USE_EPOLL 0
185#endif
186
187#ifndef EV_USE_KQUEUE
188# define EV_USE_KQUEUE 0
189#endif
190
191#ifndef EV_USE_PORT
192# define EV_USE_PORT 0
193#endif
194
195#ifndef EV_USE_INOTIFY
196# define EV_USE_INOTIFY 0
197#endif
198
199#ifndef EV_PID_HASHSIZE
200# if EV_MINIMAL
201# define EV_PID_HASHSIZE 1
202# else
203# define EV_PID_HASHSIZE 16
204# endif
205#endif
206
207#ifndef EV_INOTIFY_HASHSIZE
208# if EV_MINIMAL
209# define EV_INOTIFY_HASHSIZE 1
210# else
211# define EV_INOTIFY_HASHSIZE 16
212# endif
213#endif
214
215/**/
216
217#ifndef CLOCK_MONOTONIC
218# undef EV_USE_MONOTONIC
219# define EV_USE_MONOTONIC 0
220#endif
221
222#ifndef CLOCK_REALTIME
223# undef EV_USE_REALTIME
224# define EV_USE_REALTIME 0
225#endif
226
227#if !EV_STAT_ENABLE
228# undef EV_USE_INOTIFY
229# define EV_USE_INOTIFY 0
230#endif
231
232#if !EV_USE_NANOSLEEP
233# ifndef _WIN32
234# include <sys/select.h>
235# endif
236#endif
237
238#if EV_USE_INOTIFY
239# include <sys/inotify.h>
240#endif
241
242#if EV_SELECT_IS_WINSOCKET
243# include <winsock.h>
244#endif
245
246/**/
247
248/*
249 * This is used to avoid floating point rounding problems.
250 * It is added to ev_rt_now when scheduling periodics
251 * to ensure progress, time-wise, even when rounding
252 * errors are against us.
253 * This value is good at least till the year 4000.
254 * Better solutions welcome.
255 */
256#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
257
258#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
259#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
260/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
261
146#if __GNUC__ >= 3 262#if __GNUC__ >= 4
147# define expect(expr,value) __builtin_expect ((expr),(value)) 263# define expect(expr,value) __builtin_expect ((expr),(value))
148# define inline inline 264# define noinline __attribute__ ((noinline))
149#else 265#else
150# define expect(expr,value) (expr) 266# define expect(expr,value) (expr)
151# define inline static 267# define noinline
268# if __STDC_VERSION__ < 199901L
269# define inline
270# endif
152#endif 271#endif
153 272
154#define expect_false(expr) expect ((expr) != 0, 0) 273#define expect_false(expr) expect ((expr) != 0, 0)
155#define expect_true(expr) expect ((expr) != 0, 1) 274#define expect_true(expr) expect ((expr) != 0, 1)
275#define inline_size static inline
276
277#if EV_MINIMAL
278# define inline_speed static noinline
279#else
280# define inline_speed static inline
281#endif
156 282
157#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 283#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
158#define ABSPRI(w) ((w)->priority - EV_MINPRI) 284#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
159 285
286#define EMPTY /* required for microsofts broken pseudo-c compiler */
287#define EMPTY2(a,b) /* used to suppress some warnings */
288
160typedef struct ev_watcher *W; 289typedef ev_watcher *W;
161typedef struct ev_watcher_list *WL; 290typedef ev_watcher_list *WL;
162typedef struct ev_watcher_time *WT; 291typedef ev_watcher_time *WT;
163 292
293#if EV_USE_MONOTONIC
294/* sig_atomic_t is used to avoid per-thread variables or locking but still */
295/* giving it a reasonably high chance of working on typical architetcures */
164static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 296static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
297#endif
165 298
166#ifdef WIN32 299#ifdef _WIN32
167# include "ev_win32.c" 300# include "ev_win32.c"
168#endif 301#endif
169 302
170/*****************************************************************************/ 303/*****************************************************************************/
171 304
172static void (*syserr_cb)(const char *msg); 305static void (*syserr_cb)(const char *msg);
173 306
307void
174void ev_set_syserr_cb (void (*cb)(const char *msg)) 308ev_set_syserr_cb (void (*cb)(const char *msg))
175{ 309{
176 syserr_cb = cb; 310 syserr_cb = cb;
177} 311}
178 312
179static void 313static void noinline
180syserr (const char *msg) 314syserr (const char *msg)
181{ 315{
182 if (!msg) 316 if (!msg)
183 msg = "(libev) system error"; 317 msg = "(libev) system error";
184 318
… …
191 } 325 }
192} 326}
193 327
194static void *(*alloc)(void *ptr, long size); 328static void *(*alloc)(void *ptr, long size);
195 329
330void
196void ev_set_allocator (void *(*cb)(void *ptr, long size)) 331ev_set_allocator (void *(*cb)(void *ptr, long size))
197{ 332{
198 alloc = cb; 333 alloc = cb;
199} 334}
200 335
201static void * 336inline_speed void *
202ev_realloc (void *ptr, long size) 337ev_realloc (void *ptr, long size)
203{ 338{
204 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size); 339 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
205 340
206 if (!ptr && size) 341 if (!ptr && size)
… …
220typedef struct 355typedef struct
221{ 356{
222 WL head; 357 WL head;
223 unsigned char events; 358 unsigned char events;
224 unsigned char reify; 359 unsigned char reify;
360#if EV_SELECT_IS_WINSOCKET
361 SOCKET handle;
362#endif
225} ANFD; 363} ANFD;
226 364
227typedef struct 365typedef struct
228{ 366{
229 W w; 367 W w;
230 int events; 368 int events;
231} ANPENDING; 369} ANPENDING;
232 370
371#if EV_USE_INOTIFY
372typedef struct
373{
374 WL head;
375} ANFS;
376#endif
377
233#if EV_MULTIPLICITY 378#if EV_MULTIPLICITY
234 379
235 struct ev_loop 380 struct ev_loop
236 { 381 {
237 ev_tstamp ev_rt_now; 382 ev_tstamp ev_rt_now;
383 #define ev_rt_now ((loop)->ev_rt_now)
238 #define VAR(name,decl) decl; 384 #define VAR(name,decl) decl;
239 #include "ev_vars.h" 385 #include "ev_vars.h"
240 #undef VAR 386 #undef VAR
241 }; 387 };
242 #include "ev_wrap.h" 388 #include "ev_wrap.h"
243 389
244 struct ev_loop default_loop_struct; 390 static struct ev_loop default_loop_struct;
245 static struct ev_loop *default_loop; 391 struct ev_loop *ev_default_loop_ptr;
246 392
247#else 393#else
248 394
249 ev_tstamp ev_rt_now; 395 ev_tstamp ev_rt_now;
250 #define VAR(name,decl) static decl; 396 #define VAR(name,decl) static decl;
251 #include "ev_vars.h" 397 #include "ev_vars.h"
252 #undef VAR 398 #undef VAR
253 399
254 static int default_loop; 400 static int ev_default_loop_ptr;
255 401
256#endif 402#endif
257 403
258/*****************************************************************************/ 404/*****************************************************************************/
259 405
… …
269 gettimeofday (&tv, 0); 415 gettimeofday (&tv, 0);
270 return tv.tv_sec + tv.tv_usec * 1e-6; 416 return tv.tv_sec + tv.tv_usec * 1e-6;
271#endif 417#endif
272} 418}
273 419
274inline ev_tstamp 420ev_tstamp inline_size
275get_clock (void) 421get_clock (void)
276{ 422{
277#if EV_USE_MONOTONIC 423#if EV_USE_MONOTONIC
278 if (expect_true (have_monotonic)) 424 if (expect_true (have_monotonic))
279 { 425 {
… …
292{ 438{
293 return ev_rt_now; 439 return ev_rt_now;
294} 440}
295#endif 441#endif
296 442
297#define array_roundsize(type,n) ((n) | 4 & ~3) 443void
444ev_sleep (ev_tstamp delay)
445{
446 if (delay > 0.)
447 {
448#if EV_USE_NANOSLEEP
449 struct timespec ts;
450
451 ts.tv_sec = (time_t)delay;
452 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
453
454 nanosleep (&ts, 0);
455#elif defined(_WIN32)
456 Sleep (delay * 1e3);
457#else
458 struct timeval tv;
459
460 tv.tv_sec = (time_t)delay;
461 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
462
463 select (0, 0, 0, 0, &tv);
464#endif
465 }
466}
467
468/*****************************************************************************/
469
470int inline_size
471array_nextsize (int elem, int cur, int cnt)
472{
473 int ncur = cur + 1;
474
475 do
476 ncur <<= 1;
477 while (cnt > ncur);
478
479 /* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */
480 if (elem * ncur > 4096)
481 {
482 ncur *= elem;
483 ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095;
484 ncur = ncur - sizeof (void *) * 4;
485 ncur /= elem;
486 }
487
488 return ncur;
489}
490
491static noinline void *
492array_realloc (int elem, void *base, int *cur, int cnt)
493{
494 *cur = array_nextsize (elem, *cur, cnt);
495 return ev_realloc (base, elem * *cur);
496}
298 497
299#define array_needsize(type,base,cur,cnt,init) \ 498#define array_needsize(type,base,cur,cnt,init) \
300 if (expect_false ((cnt) > cur)) \ 499 if (expect_false ((cnt) > (cur))) \
301 { \ 500 { \
302 int newcnt = cur; \ 501 int ocur_ = (cur); \
303 do \ 502 (base) = (type *)array_realloc \
304 { \ 503 (sizeof (type), (base), &(cur), (cnt)); \
305 newcnt = array_roundsize (type, newcnt << 1); \ 504 init ((base) + (ocur_), (cur) - ocur_); \
306 } \
307 while ((cnt) > newcnt); \
308 \
309 base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\
310 init (base + cur, newcnt - cur); \
311 cur = newcnt; \
312 } 505 }
313 506
507#if 0
314#define array_slim(type,stem) \ 508#define array_slim(type,stem) \
315 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 509 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
316 { \ 510 { \
317 stem ## max = array_roundsize (stem ## cnt >> 1); \ 511 stem ## max = array_roundsize (stem ## cnt >> 1); \
318 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\ 512 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
319 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 513 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
320 } 514 }
321 515#endif
322/* microsoft's pseudo-c is quite far from C as the rest of the world and the standard knows it */
323/* bringing us everlasting joy in form of stupid extra macros that are not required in C */
324#define array_free_microshit(stem) \
325 ev_free (stem ## s); stem ## cnt = stem ## max = 0;
326 516
327#define array_free(stem, idx) \ 517#define array_free(stem, idx) \
328 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 518 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
329 519
330/*****************************************************************************/ 520/*****************************************************************************/
331 521
332static void 522void noinline
523ev_feed_event (EV_P_ void *w, int revents)
524{
525 W w_ = (W)w;
526 int pri = ABSPRI (w_);
527
528 if (expect_false (w_->pending))
529 pendings [pri][w_->pending - 1].events |= revents;
530 else
531 {
532 w_->pending = ++pendingcnt [pri];
533 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
534 pendings [pri][w_->pending - 1].w = w_;
535 pendings [pri][w_->pending - 1].events = revents;
536 }
537}
538
539void inline_speed
540queue_events (EV_P_ W *events, int eventcnt, int type)
541{
542 int i;
543
544 for (i = 0; i < eventcnt; ++i)
545 ev_feed_event (EV_A_ events [i], type);
546}
547
548/*****************************************************************************/
549
550void inline_size
333anfds_init (ANFD *base, int count) 551anfds_init (ANFD *base, int count)
334{ 552{
335 while (count--) 553 while (count--)
336 { 554 {
337 base->head = 0; 555 base->head = 0;
… …
340 558
341 ++base; 559 ++base;
342 } 560 }
343} 561}
344 562
345void 563void inline_speed
346ev_feed_event (EV_P_ void *w, int revents)
347{
348 W w_ = (W)w;
349
350 if (w_->pending)
351 {
352 pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
353 return;
354 }
355
356 w_->pending = ++pendingcnt [ABSPRI (w_)];
357 array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], (void));
358 pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
359 pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
360}
361
362static void
363queue_events (EV_P_ W *events, int eventcnt, int type)
364{
365 int i;
366
367 for (i = 0; i < eventcnt; ++i)
368 ev_feed_event (EV_A_ events [i], type);
369}
370
371inline void
372fd_event (EV_P_ int fd, int revents) 564fd_event (EV_P_ int fd, int revents)
373{ 565{
374 ANFD *anfd = anfds + fd; 566 ANFD *anfd = anfds + fd;
375 struct ev_io *w; 567 ev_io *w;
376 568
377 for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) 569 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
378 { 570 {
379 int ev = w->events & revents; 571 int ev = w->events & revents;
380 572
381 if (ev) 573 if (ev)
382 ev_feed_event (EV_A_ (W)w, ev); 574 ev_feed_event (EV_A_ (W)w, ev);
… …
384} 576}
385 577
386void 578void
387ev_feed_fd_event (EV_P_ int fd, int revents) 579ev_feed_fd_event (EV_P_ int fd, int revents)
388{ 580{
581 if (fd >= 0 && fd < anfdmax)
389 fd_event (EV_A_ fd, revents); 582 fd_event (EV_A_ fd, revents);
390} 583}
391 584
392/*****************************************************************************/ 585void inline_size
393
394static void
395fd_reify (EV_P) 586fd_reify (EV_P)
396{ 587{
397 int i; 588 int i;
398 589
399 for (i = 0; i < fdchangecnt; ++i) 590 for (i = 0; i < fdchangecnt; ++i)
400 { 591 {
401 int fd = fdchanges [i]; 592 int fd = fdchanges [i];
402 ANFD *anfd = anfds + fd; 593 ANFD *anfd = anfds + fd;
403 struct ev_io *w; 594 ev_io *w;
404 595
405 int events = 0; 596 unsigned char events = 0;
406 597
407 for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) 598 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
408 events |= w->events; 599 events |= (unsigned char)w->events;
409 600
601#if EV_SELECT_IS_WINSOCKET
602 if (events)
603 {
604 unsigned long argp;
605 #ifdef EV_FD_TO_WIN32_HANDLE
606 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
607 #else
608 anfd->handle = _get_osfhandle (fd);
609 #endif
610 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
611 }
612#endif
613
614 {
615 unsigned char o_events = anfd->events;
616 unsigned char o_reify = anfd->reify;
617
410 anfd->reify = 0; 618 anfd->reify = 0;
411
412 method_modify (EV_A_ fd, anfd->events, events);
413 anfd->events = events; 619 anfd->events = events;
620
621 if (o_events != events || o_reify & EV_IOFDSET)
622 backend_modify (EV_A_ fd, o_events, events);
623 }
414 } 624 }
415 625
416 fdchangecnt = 0; 626 fdchangecnt = 0;
417} 627}
418 628
419static void 629void inline_size
420fd_change (EV_P_ int fd) 630fd_change (EV_P_ int fd, int flags)
421{ 631{
422 if (anfds [fd].reify) 632 unsigned char reify = anfds [fd].reify;
423 return;
424
425 anfds [fd].reify = 1; 633 anfds [fd].reify |= flags;
426 634
635 if (expect_true (!reify))
636 {
427 ++fdchangecnt; 637 ++fdchangecnt;
428 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void)); 638 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
429 fdchanges [fdchangecnt - 1] = fd; 639 fdchanges [fdchangecnt - 1] = fd;
640 }
430} 641}
431 642
432static void 643void inline_speed
433fd_kill (EV_P_ int fd) 644fd_kill (EV_P_ int fd)
434{ 645{
435 struct ev_io *w; 646 ev_io *w;
436 647
437 while ((w = (struct ev_io *)anfds [fd].head)) 648 while ((w = (ev_io *)anfds [fd].head))
438 { 649 {
439 ev_io_stop (EV_A_ w); 650 ev_io_stop (EV_A_ w);
440 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 651 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
441 } 652 }
442} 653}
443 654
444static int 655int inline_size
445fd_valid (int fd) 656fd_valid (int fd)
446{ 657{
447#ifdef WIN32 658#ifdef _WIN32
448 return !!win32_get_osfhandle (fd); 659 return _get_osfhandle (fd) != -1;
449#else 660#else
450 return fcntl (fd, F_GETFD) != -1; 661 return fcntl (fd, F_GETFD) != -1;
451#endif 662#endif
452} 663}
453 664
454/* called on EBADF to verify fds */ 665/* called on EBADF to verify fds */
455static void 666static void noinline
456fd_ebadf (EV_P) 667fd_ebadf (EV_P)
457{ 668{
458 int fd; 669 int fd;
459 670
460 for (fd = 0; fd < anfdmax; ++fd) 671 for (fd = 0; fd < anfdmax; ++fd)
… …
462 if (!fd_valid (fd) == -1 && errno == EBADF) 673 if (!fd_valid (fd) == -1 && errno == EBADF)
463 fd_kill (EV_A_ fd); 674 fd_kill (EV_A_ fd);
464} 675}
465 676
466/* called on ENOMEM in select/poll to kill some fds and retry */ 677/* called on ENOMEM in select/poll to kill some fds and retry */
467static void 678static void noinline
468fd_enomem (EV_P) 679fd_enomem (EV_P)
469{ 680{
470 int fd; 681 int fd;
471 682
472 for (fd = anfdmax; fd--; ) 683 for (fd = anfdmax; fd--; )
… …
475 fd_kill (EV_A_ fd); 686 fd_kill (EV_A_ fd);
476 return; 687 return;
477 } 688 }
478} 689}
479 690
480/* usually called after fork if method needs to re-arm all fds from scratch */ 691/* usually called after fork if backend needs to re-arm all fds from scratch */
481static void 692static void noinline
482fd_rearm_all (EV_P) 693fd_rearm_all (EV_P)
483{ 694{
484 int fd; 695 int fd;
485 696
486 /* this should be highly optimised to not do anything but set a flag */
487 for (fd = 0; fd < anfdmax; ++fd) 697 for (fd = 0; fd < anfdmax; ++fd)
488 if (anfds [fd].events) 698 if (anfds [fd].events)
489 { 699 {
490 anfds [fd].events = 0; 700 anfds [fd].events = 0;
491 fd_change (EV_A_ fd); 701 fd_change (EV_A_ fd, EV_IOFDSET | 1);
492 } 702 }
493} 703}
494 704
495/*****************************************************************************/ 705/*****************************************************************************/
496 706
497static void 707void inline_speed
498upheap (WT *heap, int k) 708upheap (WT *heap, int k)
499{ 709{
500 WT w = heap [k]; 710 WT w = heap [k];
501 711
502 while (k && heap [k >> 1]->at > w->at) 712 while (k)
503 { 713 {
714 int p = (k - 1) >> 1;
715
716 if (heap [p]->at <= w->at)
717 break;
718
504 heap [k] = heap [k >> 1]; 719 heap [k] = heap [p];
505 ((W)heap [k])->active = k + 1; 720 ((W)heap [k])->active = k + 1;
506 k >>= 1; 721 k = p;
507 } 722 }
508 723
509 heap [k] = w; 724 heap [k] = w;
510 ((W)heap [k])->active = k + 1; 725 ((W)heap [k])->active = k + 1;
511
512} 726}
513 727
514static void 728void inline_speed
515downheap (WT *heap, int N, int k) 729downheap (WT *heap, int N, int k)
516{ 730{
517 WT w = heap [k]; 731 WT w = heap [k];
518 732
519 while (k < (N >> 1)) 733 for (;;)
520 { 734 {
521 int j = k << 1; 735 int c = (k << 1) + 1;
522 736
523 if (j + 1 < N && heap [j]->at > heap [j + 1]->at) 737 if (c >= N)
524 ++j;
525
526 if (w->at <= heap [j]->at)
527 break; 738 break;
528 739
740 c += c + 1 < N && heap [c]->at > heap [c + 1]->at
741 ? 1 : 0;
742
743 if (w->at <= heap [c]->at)
744 break;
745
529 heap [k] = heap [j]; 746 heap [k] = heap [c];
530 ((W)heap [k])->active = k + 1; 747 ((W)heap [k])->active = k + 1;
748
531 k = j; 749 k = c;
532 } 750 }
533 751
534 heap [k] = w; 752 heap [k] = w;
535 ((W)heap [k])->active = k + 1; 753 ((W)heap [k])->active = k + 1;
536} 754}
537 755
538inline void 756void inline_size
539adjustheap (WT *heap, int N, int k, ev_tstamp at) 757adjustheap (WT *heap, int N, int k)
540{ 758{
541 ev_tstamp old_at = heap [k]->at; 759 upheap (heap, k);
542 heap [k]->at = at;
543
544 if (old_at < at)
545 downheap (heap, N, k); 760 downheap (heap, N, k);
546 else
547 upheap (heap, k);
548} 761}
549 762
550/*****************************************************************************/ 763/*****************************************************************************/
551 764
552typedef struct 765typedef struct
553{ 766{
554 WL head; 767 WL head;
555 sig_atomic_t volatile gotsig; 768 EV_ATOMIC_T gotsig;
556} ANSIG; 769} ANSIG;
557 770
558static ANSIG *signals; 771static ANSIG *signals;
559static int signalmax; 772static int signalmax;
560 773
561static int sigpipe [2]; 774static EV_ATOMIC_T gotsig;
562static sig_atomic_t volatile gotsig;
563static struct ev_io sigev;
564 775
565static void 776void inline_size
566signals_init (ANSIG *base, int count) 777signals_init (ANSIG *base, int count)
567{ 778{
568 while (count--) 779 while (count--)
569 { 780 {
570 base->head = 0; 781 base->head = 0;
… …
572 783
573 ++base; 784 ++base;
574 } 785 }
575} 786}
576 787
788/*****************************************************************************/
789
790void inline_speed
791fd_intern (int fd)
792{
793#ifdef _WIN32
794 int arg = 1;
795 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
796#else
797 fcntl (fd, F_SETFD, FD_CLOEXEC);
798 fcntl (fd, F_SETFL, O_NONBLOCK);
799#endif
800}
801
802static void noinline
803evpipe_init (EV_P)
804{
805 if (!ev_is_active (&pipeev))
806 {
807 while (pipe (evpipe))
808 syserr ("(libev) error creating signal/async pipe");
809
810 fd_intern (evpipe [0]);
811 fd_intern (evpipe [1]);
812
813 ev_io_set (&pipeev, evpipe [0], EV_READ);
814 ev_io_start (EV_A_ &pipeev);
815 ev_unref (EV_A); /* child watcher should not keep loop alive */
816 }
817}
818
819void inline_size
820evpipe_write (EV_P_ int sig, int async)
821{
822 if (!(gotasync || gotsig))
823 {
824 int old_errno = errno;
825
826 if (sig) gotsig = 1;
827 if (async) gotasync = 1;
828
829 write (evpipe [1], &old_errno, 1);
830 errno = old_errno;
831 }
832}
833
834static void
835pipecb (EV_P_ ev_io *iow, int revents)
836{
837 {
838 int dummy;
839 read (evpipe [0], &dummy, 1);
840 }
841
842 if (gotsig)
843 {
844 int signum;
845 gotsig = 0;
846
847 for (signum = signalmax; signum--; )
848 if (signals [signum].gotsig)
849 ev_feed_signal_event (EV_A_ signum + 1);
850 }
851
852#if EV_ASYNC_ENABLE
853 if (gotasync)
854 {
855 int i;
856 gotasync = 0;
857
858 for (i = asynccnt; i--; )
859 if (asyncs [i]->sent)
860 {
861 asyncs [i]->sent = 0;
862 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
863 }
864 }
865#endif
866}
867
868/*****************************************************************************/
869
577static void 870static void
578sighandler (int signum) 871sighandler (int signum)
579{ 872{
873#if EV_MULTIPLICITY
874 struct ev_loop *loop = &default_loop_struct;
875#endif
876
580#if WIN32 877#if _WIN32
581 signal (signum, sighandler); 878 signal (signum, sighandler);
582#endif 879#endif
583 880
584 signals [signum - 1].gotsig = 1; 881 signals [signum - 1].gotsig = 1;
585 882 evpipe_write (EV_A_ 1, 0);
586 if (!gotsig)
587 {
588 int old_errno = errno;
589 gotsig = 1;
590#ifdef WIN32
591 send (sigpipe [1], &signum, 1, MSG_DONTWAIT);
592#else
593 write (sigpipe [1], &signum, 1);
594#endif
595 errno = old_errno;
596 }
597} 883}
598 884
599void 885void noinline
600ev_feed_signal_event (EV_P_ int signum) 886ev_feed_signal_event (EV_P_ int signum)
601{ 887{
602 WL w; 888 WL w;
603 889
604#if EV_MULTIPLICITY 890#if EV_MULTIPLICITY
605 assert (("feeding signal events is only supported in the default loop", loop == default_loop)); 891 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
606#endif 892#endif
607 893
608 --signum; 894 --signum;
609 895
610 if (signum < 0 || signum >= signalmax) 896 if (signum < 0 || signum >= signalmax)
… …
614 900
615 for (w = signals [signum].head; w; w = w->next) 901 for (w = signals [signum].head; w; w = w->next)
616 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 902 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
617} 903}
618 904
619static void
620sigcb (EV_P_ struct ev_io *iow, int revents)
621{
622 int signum;
623
624#ifdef WIN32
625 recv (sigpipe [0], &revents, 1, MSG_DONTWAIT);
626#else
627 read (sigpipe [0], &revents, 1);
628#endif
629 gotsig = 0;
630
631 for (signum = signalmax; signum--; )
632 if (signals [signum].gotsig)
633 ev_feed_signal_event (EV_A_ signum + 1);
634}
635
636static void
637siginit (EV_P)
638{
639#ifndef WIN32
640 fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);
641 fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
642
643 /* rather than sort out wether we really need nb, set it */
644 fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
645 fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
646#endif
647
648 ev_io_set (&sigev, sigpipe [0], EV_READ);
649 ev_io_start (EV_A_ &sigev);
650 ev_unref (EV_A); /* child watcher should not keep loop alive */
651}
652
653/*****************************************************************************/ 905/*****************************************************************************/
654 906
655static struct ev_child *childs [PID_HASHSIZE]; 907static WL childs [EV_PID_HASHSIZE];
656 908
657#ifndef WIN32 909#ifndef _WIN32
658 910
659static struct ev_signal childev; 911static ev_signal childev;
912
913#ifndef WIFCONTINUED
914# define WIFCONTINUED(status) 0
915#endif
916
917void inline_speed
918child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
919{
920 ev_child *w;
921 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
922
923 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
924 {
925 if ((w->pid == pid || !w->pid)
926 && (!traced || (w->flags & 1)))
927 {
928 ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */
929 w->rpid = pid;
930 w->rstatus = status;
931 ev_feed_event (EV_A_ (W)w, EV_CHILD);
932 }
933 }
934}
660 935
661#ifndef WCONTINUED 936#ifndef WCONTINUED
662# define WCONTINUED 0 937# define WCONTINUED 0
663#endif 938#endif
664 939
665static void 940static void
666child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
667{
668 struct ev_child *w;
669
670 for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
671 if (w->pid == pid || !w->pid)
672 {
673 ev_priority (w) = ev_priority (sw); /* need to do it *now* */
674 w->rpid = pid;
675 w->rstatus = status;
676 ev_feed_event (EV_A_ (W)w, EV_CHILD);
677 }
678}
679
680static void
681childcb (EV_P_ struct ev_signal *sw, int revents) 941childcb (EV_P_ ev_signal *sw, int revents)
682{ 942{
683 int pid, status; 943 int pid, status;
684 944
945 /* some systems define WCONTINUED but then fail to support it (linux 2.4) */
685 if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) 946 if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
686 { 947 if (!WCONTINUED
948 || errno != EINVAL
949 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
950 return;
951
687 /* make sure we are called again until all childs have been reaped */ 952 /* make sure we are called again until all childs have been reaped */
953 /* we need to do it this way so that the callback gets called before we continue */
688 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 954 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
689 955
690 child_reap (EV_A_ sw, pid, pid, status); 956 child_reap (EV_A_ sw, pid, pid, status);
957 if (EV_PID_HASHSIZE > 1)
691 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */ 958 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
692 }
693} 959}
694 960
695#endif 961#endif
696 962
697/*****************************************************************************/ 963/*****************************************************************************/
698 964
965#if EV_USE_PORT
966# include "ev_port.c"
967#endif
699#if EV_USE_KQUEUE 968#if EV_USE_KQUEUE
700# include "ev_kqueue.c" 969# include "ev_kqueue.c"
701#endif 970#endif
702#if EV_USE_EPOLL 971#if EV_USE_EPOLL
703# include "ev_epoll.c" 972# include "ev_epoll.c"
… …
720{ 989{
721 return EV_VERSION_MINOR; 990 return EV_VERSION_MINOR;
722} 991}
723 992
724/* return true if we are running with elevated privileges and should ignore env variables */ 993/* return true if we are running with elevated privileges and should ignore env variables */
725static int 994int inline_size
726enable_secure (void) 995enable_secure (void)
727{ 996{
728#ifdef WIN32 997#ifdef _WIN32
729 return 0; 998 return 0;
730#else 999#else
731 return getuid () != geteuid () 1000 return getuid () != geteuid ()
732 || getgid () != getegid (); 1001 || getgid () != getegid ();
733#endif 1002#endif
734} 1003}
735 1004
736int 1005unsigned int
737ev_method (EV_P) 1006ev_supported_backends (void)
738{ 1007{
739 return method; 1008 unsigned int flags = 0;
740}
741 1009
742static void 1010 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
743loop_init (EV_P_ int methods) 1011 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
1012 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
1013 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
1014 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1015
1016 return flags;
1017}
1018
1019unsigned int
1020ev_recommended_backends (void)
744{ 1021{
745 if (!method) 1022 unsigned int flags = ev_supported_backends ();
1023
1024#ifndef __NetBSD__
1025 /* kqueue is borked on everything but netbsd apparently */
1026 /* it usually doesn't work correctly on anything but sockets and pipes */
1027 flags &= ~EVBACKEND_KQUEUE;
1028#endif
1029#ifdef __APPLE__
1030 // flags &= ~EVBACKEND_KQUEUE; for documentation
1031 flags &= ~EVBACKEND_POLL;
1032#endif
1033
1034 return flags;
1035}
1036
1037unsigned int
1038ev_embeddable_backends (void)
1039{
1040 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1041
1042 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1043 /* please fix it and tell me how to detect the fix */
1044 flags &= ~EVBACKEND_EPOLL;
1045
1046 return flags;
1047}
1048
1049unsigned int
1050ev_backend (EV_P)
1051{
1052 return backend;
1053}
1054
1055unsigned int
1056ev_loop_count (EV_P)
1057{
1058 return loop_count;
1059}
1060
1061void
1062ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1063{
1064 io_blocktime = interval;
1065}
1066
1067void
1068ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1069{
1070 timeout_blocktime = interval;
1071}
1072
1073static void noinline
1074loop_init (EV_P_ unsigned int flags)
1075{
1076 if (!backend)
746 { 1077 {
747#if EV_USE_MONOTONIC 1078#if EV_USE_MONOTONIC
748 { 1079 {
749 struct timespec ts; 1080 struct timespec ts;
750 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1081 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
751 have_monotonic = 1; 1082 have_monotonic = 1;
752 } 1083 }
753#endif 1084#endif
754 1085
755 ev_rt_now = ev_time (); 1086 ev_rt_now = ev_time ();
756 mn_now = get_clock (); 1087 mn_now = get_clock ();
757 now_floor = mn_now; 1088 now_floor = mn_now;
758 rtmn_diff = ev_rt_now - mn_now; 1089 rtmn_diff = ev_rt_now - mn_now;
759 1090
760 if (methods == EVMETHOD_AUTO) 1091 io_blocktime = 0.;
761 if (!enable_secure () && getenv ("LIBEV_METHODS")) 1092 timeout_blocktime = 0.;
1093 backend = 0;
1094 backend_fd = -1;
1095 gotasync = 0;
1096#if EV_USE_INOTIFY
1097 fs_fd = -2;
1098#endif
1099
1100 /* pid check not overridable via env */
1101#ifndef _WIN32
1102 if (flags & EVFLAG_FORKCHECK)
1103 curpid = getpid ();
1104#endif
1105
1106 if (!(flags & EVFLAG_NOENV)
1107 && !enable_secure ()
1108 && getenv ("LIBEV_FLAGS"))
762 methods = atoi (getenv ("LIBEV_METHODS")); 1109 flags = atoi (getenv ("LIBEV_FLAGS"));
763 else
764 methods = EVMETHOD_ANY;
765 1110
766 method = 0; 1111 if (!(flags & 0x0000ffffUL))
767#if EV_USE_WIN32 1112 flags |= ev_recommended_backends ();
768 if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods); 1113
1114#if EV_USE_PORT
1115 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
769#endif 1116#endif
770#if EV_USE_KQUEUE 1117#if EV_USE_KQUEUE
771 if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods); 1118 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
772#endif 1119#endif
773#if EV_USE_EPOLL 1120#if EV_USE_EPOLL
774 if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods); 1121 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
775#endif 1122#endif
776#if EV_USE_POLL 1123#if EV_USE_POLL
777 if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods); 1124 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
778#endif 1125#endif
779#if EV_USE_SELECT 1126#if EV_USE_SELECT
780 if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods); 1127 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
781#endif 1128#endif
782 1129
783 ev_init (&sigev, sigcb); 1130 ev_init (&pipeev, pipecb);
784 ev_set_priority (&sigev, EV_MAXPRI); 1131 ev_set_priority (&pipeev, EV_MAXPRI);
785 } 1132 }
786} 1133}
787 1134
788void 1135static void noinline
789loop_destroy (EV_P) 1136loop_destroy (EV_P)
790{ 1137{
791 int i; 1138 int i;
792 1139
1140 if (ev_is_active (&pipeev))
1141 {
1142 ev_ref (EV_A); /* signal watcher */
1143 ev_io_stop (EV_A_ &pipeev);
1144
1145 close (evpipe [0]); evpipe [0] = 0;
1146 close (evpipe [1]); evpipe [1] = 0;
1147 }
1148
793#if EV_USE_WIN32 1149#if EV_USE_INOTIFY
794 if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A); 1150 if (fs_fd >= 0)
1151 close (fs_fd);
1152#endif
1153
1154 if (backend_fd >= 0)
1155 close (backend_fd);
1156
1157#if EV_USE_PORT
1158 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
795#endif 1159#endif
796#if EV_USE_KQUEUE 1160#if EV_USE_KQUEUE
797 if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A); 1161 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
798#endif 1162#endif
799#if EV_USE_EPOLL 1163#if EV_USE_EPOLL
800 if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A); 1164 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
801#endif 1165#endif
802#if EV_USE_POLL 1166#if EV_USE_POLL
803 if (method == EVMETHOD_POLL ) poll_destroy (EV_A); 1167 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
804#endif 1168#endif
805#if EV_USE_SELECT 1169#if EV_USE_SELECT
806 if (method == EVMETHOD_SELECT) select_destroy (EV_A); 1170 if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
807#endif 1171#endif
808 1172
809 for (i = NUMPRI; i--; ) 1173 for (i = NUMPRI; i--; )
1174 {
810 array_free (pending, [i]); 1175 array_free (pending, [i]);
1176#if EV_IDLE_ENABLE
1177 array_free (idle, [i]);
1178#endif
1179 }
1180
1181 ev_free (anfds); anfdmax = 0;
811 1182
812 /* have to use the microsoft-never-gets-it-right macro */ 1183 /* have to use the microsoft-never-gets-it-right macro */
813 array_free_microshit (fdchange); 1184 array_free (fdchange, EMPTY);
814 array_free_microshit (timer); 1185 array_free (timer, EMPTY);
815#if EV_PERIODICS 1186#if EV_PERIODIC_ENABLE
816 array_free_microshit (periodic); 1187 array_free (periodic, EMPTY);
817#endif 1188#endif
818 array_free_microshit (idle); 1189#if EV_FORK_ENABLE
819 array_free_microshit (prepare); 1190 array_free (fork, EMPTY);
820 array_free_microshit (check); 1191#endif
1192 array_free (prepare, EMPTY);
1193 array_free (check, EMPTY);
1194#if EV_ASYNC_ENABLE
1195 array_free (async, EMPTY);
1196#endif
821 1197
822 method = 0; 1198 backend = 0;
823} 1199}
824 1200
825static void 1201void inline_size infy_fork (EV_P);
1202
1203void inline_size
826loop_fork (EV_P) 1204loop_fork (EV_P)
827{ 1205{
1206#if EV_USE_PORT
1207 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1208#endif
1209#if EV_USE_KQUEUE
1210 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
1211#endif
828#if EV_USE_EPOLL 1212#if EV_USE_EPOLL
829 if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A); 1213 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
830#endif 1214#endif
831#if EV_USE_KQUEUE 1215#if EV_USE_INOTIFY
832 if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A); 1216 infy_fork (EV_A);
833#endif 1217#endif
834 1218
835 if (ev_is_active (&sigev)) 1219 if (ev_is_active (&pipeev))
836 { 1220 {
837 /* default loop */ 1221 /* this "locks" the handlers against writing to the pipe */
1222 gotsig = gotasync = 1;
838 1223
839 ev_ref (EV_A); 1224 ev_ref (EV_A);
840 ev_io_stop (EV_A_ &sigev); 1225 ev_io_stop (EV_A_ &pipeev);
841 close (sigpipe [0]); 1226 close (evpipe [0]);
842 close (sigpipe [1]); 1227 close (evpipe [1]);
843 1228
844 while (pipe (sigpipe))
845 syserr ("(libev) error creating pipe");
846
847 siginit (EV_A); 1229 evpipe_init (EV_A);
1230 /* now iterate over everything, in case we missed something */
1231 pipecb (EV_A_ &pipeev, EV_READ);
848 } 1232 }
849 1233
850 postfork = 0; 1234 postfork = 0;
851} 1235}
852 1236
853#if EV_MULTIPLICITY 1237#if EV_MULTIPLICITY
854struct ev_loop * 1238struct ev_loop *
855ev_loop_new (int methods) 1239ev_loop_new (unsigned int flags)
856{ 1240{
857 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 1241 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
858 1242
859 memset (loop, 0, sizeof (struct ev_loop)); 1243 memset (loop, 0, sizeof (struct ev_loop));
860 1244
861 loop_init (EV_A_ methods); 1245 loop_init (EV_A_ flags);
862 1246
863 if (ev_method (EV_A)) 1247 if (ev_backend (EV_A))
864 return loop; 1248 return loop;
865 1249
866 return 0; 1250 return 0;
867} 1251}
868 1252
… …
874} 1258}
875 1259
876void 1260void
877ev_loop_fork (EV_P) 1261ev_loop_fork (EV_P)
878{ 1262{
879 postfork = 1; 1263 postfork = 1; /* must be in line with ev_default_fork */
880} 1264}
881 1265
882#endif 1266#endif
883 1267
884#if EV_MULTIPLICITY 1268#if EV_MULTIPLICITY
885struct ev_loop * 1269struct ev_loop *
1270ev_default_loop_init (unsigned int flags)
886#else 1271#else
887int 1272int
1273ev_default_loop (unsigned int flags)
888#endif 1274#endif
889ev_default_loop (int methods)
890{ 1275{
891 if (sigpipe [0] == sigpipe [1])
892 if (pipe (sigpipe))
893 return 0;
894
895 if (!default_loop) 1276 if (!ev_default_loop_ptr)
896 { 1277 {
897#if EV_MULTIPLICITY 1278#if EV_MULTIPLICITY
898 struct ev_loop *loop = default_loop = &default_loop_struct; 1279 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
899#else 1280#else
900 default_loop = 1; 1281 ev_default_loop_ptr = 1;
901#endif 1282#endif
902 1283
903 loop_init (EV_A_ methods); 1284 loop_init (EV_A_ flags);
904 1285
905 if (ev_method (EV_A)) 1286 if (ev_backend (EV_A))
906 { 1287 {
907 siginit (EV_A);
908
909#ifndef WIN32 1288#ifndef _WIN32
910 ev_signal_init (&childev, childcb, SIGCHLD); 1289 ev_signal_init (&childev, childcb, SIGCHLD);
911 ev_set_priority (&childev, EV_MAXPRI); 1290 ev_set_priority (&childev, EV_MAXPRI);
912 ev_signal_start (EV_A_ &childev); 1291 ev_signal_start (EV_A_ &childev);
913 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1292 ev_unref (EV_A); /* child watcher should not keep loop alive */
914#endif 1293#endif
915 } 1294 }
916 else 1295 else
917 default_loop = 0; 1296 ev_default_loop_ptr = 0;
918 } 1297 }
919 1298
920 return default_loop; 1299 return ev_default_loop_ptr;
921} 1300}
922 1301
923void 1302void
924ev_default_destroy (void) 1303ev_default_destroy (void)
925{ 1304{
926#if EV_MULTIPLICITY 1305#if EV_MULTIPLICITY
927 struct ev_loop *loop = default_loop; 1306 struct ev_loop *loop = ev_default_loop_ptr;
928#endif 1307#endif
929 1308
930#ifndef WIN32 1309#ifndef _WIN32
931 ev_ref (EV_A); /* child watcher */ 1310 ev_ref (EV_A); /* child watcher */
932 ev_signal_stop (EV_A_ &childev); 1311 ev_signal_stop (EV_A_ &childev);
933#endif 1312#endif
934 1313
935 ev_ref (EV_A); /* signal watcher */
936 ev_io_stop (EV_A_ &sigev);
937
938 close (sigpipe [0]); sigpipe [0] = 0;
939 close (sigpipe [1]); sigpipe [1] = 0;
940
941 loop_destroy (EV_A); 1314 loop_destroy (EV_A);
942} 1315}
943 1316
944void 1317void
945ev_default_fork (void) 1318ev_default_fork (void)
946{ 1319{
947#if EV_MULTIPLICITY 1320#if EV_MULTIPLICITY
948 struct ev_loop *loop = default_loop; 1321 struct ev_loop *loop = ev_default_loop_ptr;
949#endif 1322#endif
950 1323
951 if (method) 1324 if (backend)
952 postfork = 1; 1325 postfork = 1; /* must be in line with ev_loop_fork */
953} 1326}
954 1327
955/*****************************************************************************/ 1328/*****************************************************************************/
956 1329
957static int 1330void
958any_pending (EV_P) 1331ev_invoke (EV_P_ void *w, int revents)
959{ 1332{
960 int pri; 1333 EV_CB_INVOKE ((W)w, revents);
961
962 for (pri = NUMPRI; pri--; )
963 if (pendingcnt [pri])
964 return 1;
965
966 return 0;
967} 1334}
968 1335
969static void 1336void inline_speed
970call_pending (EV_P) 1337call_pending (EV_P)
971{ 1338{
972 int pri; 1339 int pri;
973 1340
974 for (pri = NUMPRI; pri--; ) 1341 for (pri = NUMPRI; pri--; )
975 while (pendingcnt [pri]) 1342 while (pendingcnt [pri])
976 { 1343 {
977 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 1344 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
978 1345
979 if (p->w) 1346 if (expect_true (p->w))
980 { 1347 {
1348 /*assert (("non-pending watcher on pending list", p->w->pending));*/
1349
981 p->w->pending = 0; 1350 p->w->pending = 0;
982 EV_CB_INVOKE (p->w, p->events); 1351 EV_CB_INVOKE (p->w, p->events);
983 } 1352 }
984 } 1353 }
985} 1354}
986 1355
987static void 1356void inline_size
988timers_reify (EV_P) 1357timers_reify (EV_P)
989{ 1358{
990 while (timercnt && ((WT)timers [0])->at <= mn_now) 1359 while (timercnt && ((WT)timers [0])->at <= mn_now)
991 { 1360 {
992 struct ev_timer *w = timers [0]; 1361 ev_timer *w = (ev_timer *)timers [0];
993 1362
994 assert (("inactive timer on timer heap detected", ev_is_active (w))); 1363 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
995 1364
996 /* first reschedule or stop timer */ 1365 /* first reschedule or stop timer */
997 if (w->repeat) 1366 if (w->repeat)
998 { 1367 {
999 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 1368 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1000 1369
1001 ((WT)w)->at += w->repeat; 1370 ((WT)w)->at += w->repeat;
1002 if (((WT)w)->at < mn_now) 1371 if (((WT)w)->at < mn_now)
1003 ((WT)w)->at = mn_now; 1372 ((WT)w)->at = mn_now;
1004 1373
1005 downheap ((WT *)timers, timercnt, 0); 1374 downheap (timers, timercnt, 0);
1006 } 1375 }
1007 else 1376 else
1008 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ 1377 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1009 1378
1010 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); 1379 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1011 } 1380 }
1012} 1381}
1013 1382
1014#if EV_PERIODICS 1383#if EV_PERIODIC_ENABLE
1015static void 1384void inline_size
1016periodics_reify (EV_P) 1385periodics_reify (EV_P)
1017{ 1386{
1018 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now) 1387 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1019 { 1388 {
1020 struct ev_periodic *w = periodics [0]; 1389 ev_periodic *w = (ev_periodic *)periodics [0];
1021 1390
1022 assert (("inactive timer on periodic heap detected", ev_is_active (w))); 1391 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1023 1392
1024 /* first reschedule or stop timer */ 1393 /* first reschedule or stop timer */
1025 if (w->reschedule_cb) 1394 if (w->reschedule_cb)
1026 { 1395 {
1027 ev_tstamp at = ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001); 1396 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1028
1029 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now)); 1397 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1030 downheap ((WT *)periodics, periodiccnt, 0); 1398 downheap (periodics, periodiccnt, 0);
1031 } 1399 }
1032 else if (w->interval) 1400 else if (w->interval)
1033 { 1401 {
1034 ((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval; 1402 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1403 if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
1035 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now)); 1404 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1036 downheap ((WT *)periodics, periodiccnt, 0); 1405 downheap (periodics, periodiccnt, 0);
1037 } 1406 }
1038 else 1407 else
1039 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 1408 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1040 1409
1041 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 1410 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1042 } 1411 }
1043} 1412}
1044 1413
1045static void 1414static void noinline
1046periodics_reschedule (EV_P) 1415periodics_reschedule (EV_P)
1047{ 1416{
1048 int i; 1417 int i;
1049 1418
1050 /* adjust periodics after time jump */ 1419 /* adjust periodics after time jump */
1051 for (i = 0; i < periodiccnt; ++i) 1420 for (i = 0; i < periodiccnt; ++i)
1052 { 1421 {
1053 struct ev_periodic *w = periodics [i]; 1422 ev_periodic *w = (ev_periodic *)periodics [i];
1054 1423
1055 if (w->reschedule_cb) 1424 if (w->reschedule_cb)
1056 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 1425 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1057 else if (w->interval) 1426 else if (w->interval)
1058 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval; 1427 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1059 } 1428 }
1060 1429
1061 /* now rebuild the heap */ 1430 /* now rebuild the heap */
1062 for (i = periodiccnt >> 1; i--; ) 1431 for (i = periodiccnt >> 1; i--; )
1063 downheap ((WT *)periodics, periodiccnt, i); 1432 downheap (periodics, periodiccnt, i);
1064} 1433}
1065#endif 1434#endif
1066 1435
1067inline int 1436#if EV_IDLE_ENABLE
1068time_update_monotonic (EV_P) 1437void inline_size
1438idle_reify (EV_P)
1069{ 1439{
1440 if (expect_false (idleall))
1441 {
1442 int pri;
1443
1444 for (pri = NUMPRI; pri--; )
1445 {
1446 if (pendingcnt [pri])
1447 break;
1448
1449 if (idlecnt [pri])
1450 {
1451 queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
1452 break;
1453 }
1454 }
1455 }
1456}
1457#endif
1458
1459void inline_speed
1460time_update (EV_P_ ev_tstamp max_block)
1461{
1462 int i;
1463
1464#if EV_USE_MONOTONIC
1465 if (expect_true (have_monotonic))
1466 {
1467 ev_tstamp odiff = rtmn_diff;
1468
1070 mn_now = get_clock (); 1469 mn_now = get_clock ();
1071 1470
1471 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
1472 /* interpolate in the meantime */
1072 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 1473 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1073 { 1474 {
1074 ev_rt_now = rtmn_diff + mn_now; 1475 ev_rt_now = rtmn_diff + mn_now;
1075 return 0; 1476 return;
1076 } 1477 }
1077 else 1478
1078 {
1079 now_floor = mn_now; 1479 now_floor = mn_now;
1080 ev_rt_now = ev_time (); 1480 ev_rt_now = ev_time ();
1081 return 1;
1082 }
1083}
1084 1481
1085static void 1482 /* loop a few times, before making important decisions.
1086time_update (EV_P) 1483 * on the choice of "4": one iteration isn't enough,
1087{ 1484 * in case we get preempted during the calls to
1088 int i; 1485 * ev_time and get_clock. a second call is almost guaranteed
1089 1486 * to succeed in that case, though. and looping a few more times
1090#if EV_USE_MONOTONIC 1487 * doesn't hurt either as we only do this on time-jumps or
1091 if (expect_true (have_monotonic)) 1488 * in the unlikely event of having been preempted here.
1092 { 1489 */
1093 if (time_update_monotonic (EV_A)) 1490 for (i = 4; --i; )
1094 { 1491 {
1095 ev_tstamp odiff = rtmn_diff;
1096
1097 for (i = 4; --i; ) /* loop a few times, before making important decisions */
1098 {
1099 rtmn_diff = ev_rt_now - mn_now; 1492 rtmn_diff = ev_rt_now - mn_now;
1100 1493
1101 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) 1494 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1102 return; /* all is well */ 1495 return; /* all is well */
1103 1496
1104 ev_rt_now = ev_time (); 1497 ev_rt_now = ev_time ();
1105 mn_now = get_clock (); 1498 mn_now = get_clock ();
1106 now_floor = mn_now; 1499 now_floor = mn_now;
1107 } 1500 }
1108 1501
1109# if EV_PERIODICS 1502# if EV_PERIODIC_ENABLE
1503 periodics_reschedule (EV_A);
1504# endif
1505 /* no timer adjustment, as the monotonic clock doesn't jump */
1506 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1507 }
1508 else
1509#endif
1510 {
1511 ev_rt_now = ev_time ();
1512
1513 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1514 {
1515#if EV_PERIODIC_ENABLE
1110 periodics_reschedule (EV_A); 1516 periodics_reschedule (EV_A);
1111# endif 1517#endif
1112 /* no timer adjustment, as the monotonic clock doesn't jump */
1113 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1114 }
1115 }
1116 else
1117#endif
1118 {
1119 ev_rt_now = ev_time ();
1120
1121 if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
1122 {
1123#if EV_PERIODICS
1124 periodics_reschedule (EV_A);
1125#endif
1126
1127 /* adjust timers. this is easy, as the offset is the same for all */ 1518 /* adjust timers. this is easy, as the offset is the same for all of them */
1128 for (i = 0; i < timercnt; ++i) 1519 for (i = 0; i < timercnt; ++i)
1129 ((WT)timers [i])->at += ev_rt_now - mn_now; 1520 ((WT)timers [i])->at += ev_rt_now - mn_now;
1130 } 1521 }
1131 1522
1132 mn_now = ev_rt_now; 1523 mn_now = ev_rt_now;
… …
1148static int loop_done; 1539static int loop_done;
1149 1540
1150void 1541void
1151ev_loop (EV_P_ int flags) 1542ev_loop (EV_P_ int flags)
1152{ 1543{
1153 double block;
1154 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0; 1544 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
1545 ? EVUNLOOP_ONE
1546 : EVUNLOOP_CANCEL;
1547
1548 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
1155 1549
1156 do 1550 do
1157 { 1551 {
1552#ifndef _WIN32
1553 if (expect_false (curpid)) /* penalise the forking check even more */
1554 if (expect_false (getpid () != curpid))
1555 {
1556 curpid = getpid ();
1557 postfork = 1;
1558 }
1559#endif
1560
1561#if EV_FORK_ENABLE
1562 /* we might have forked, so queue fork handlers */
1563 if (expect_false (postfork))
1564 if (forkcnt)
1565 {
1566 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1567 call_pending (EV_A);
1568 }
1569#endif
1570
1158 /* queue check watchers (and execute them) */ 1571 /* queue prepare watchers (and execute them) */
1159 if (expect_false (preparecnt)) 1572 if (expect_false (preparecnt))
1160 { 1573 {
1161 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 1574 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1162 call_pending (EV_A); 1575 call_pending (EV_A);
1163 } 1576 }
1164 1577
1578 if (expect_false (!activecnt))
1579 break;
1580
1165 /* we might have forked, so reify kernel state if necessary */ 1581 /* we might have forked, so reify kernel state if necessary */
1166 if (expect_false (postfork)) 1582 if (expect_false (postfork))
1167 loop_fork (EV_A); 1583 loop_fork (EV_A);
1168 1584
1169 /* update fd-related kernel structures */ 1585 /* update fd-related kernel structures */
1170 fd_reify (EV_A); 1586 fd_reify (EV_A);
1171 1587
1172 /* calculate blocking time */ 1588 /* calculate blocking time */
1589 {
1590 ev_tstamp waittime = 0.;
1591 ev_tstamp sleeptime = 0.;
1173 1592
1174 /* we only need this for !monotonic clock or timers, but as we basically 1593 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1175 always have timers, we just calculate it always */
1176#if EV_USE_MONOTONIC
1177 if (expect_true (have_monotonic))
1178 time_update_monotonic (EV_A);
1179 else
1180#endif
1181 { 1594 {
1182 ev_rt_now = ev_time (); 1595 /* update time to cancel out callback processing overhead */
1183 mn_now = ev_rt_now; 1596 time_update (EV_A_ 1e100);
1184 }
1185 1597
1186 if (flags & EVLOOP_NONBLOCK || idlecnt)
1187 block = 0.;
1188 else
1189 {
1190 block = MAX_BLOCKTIME; 1598 waittime = MAX_BLOCKTIME;
1191 1599
1192 if (timercnt) 1600 if (timercnt)
1193 { 1601 {
1194 ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge; 1602 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1195 if (block > to) block = to; 1603 if (waittime > to) waittime = to;
1196 } 1604 }
1197 1605
1198#if EV_PERIODICS 1606#if EV_PERIODIC_ENABLE
1199 if (periodiccnt) 1607 if (periodiccnt)
1200 { 1608 {
1201 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge; 1609 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1202 if (block > to) block = to; 1610 if (waittime > to) waittime = to;
1203 } 1611 }
1204#endif 1612#endif
1205 1613
1206 if (block < 0.) block = 0.; 1614 if (expect_false (waittime < timeout_blocktime))
1615 waittime = timeout_blocktime;
1616
1617 sleeptime = waittime - backend_fudge;
1618
1619 if (expect_true (sleeptime > io_blocktime))
1620 sleeptime = io_blocktime;
1621
1622 if (sleeptime)
1623 {
1624 ev_sleep (sleeptime);
1625 waittime -= sleeptime;
1626 }
1207 } 1627 }
1208 1628
1209 method_poll (EV_A_ block); 1629 ++loop_count;
1630 backend_poll (EV_A_ waittime);
1210 1631
1211 /* update ev_rt_now, do magic */ 1632 /* update ev_rt_now, do magic */
1212 time_update (EV_A); 1633 time_update (EV_A_ waittime + sleeptime);
1634 }
1213 1635
1214 /* queue pending timers and reschedule them */ 1636 /* queue pending timers and reschedule them */
1215 timers_reify (EV_A); /* relative timers called last */ 1637 timers_reify (EV_A); /* relative timers called last */
1216#if EV_PERIODICS 1638#if EV_PERIODIC_ENABLE
1217 periodics_reify (EV_A); /* absolute timers called first */ 1639 periodics_reify (EV_A); /* absolute timers called first */
1218#endif 1640#endif
1219 1641
1642#if EV_IDLE_ENABLE
1220 /* queue idle watchers unless io or timers are pending */ 1643 /* queue idle watchers unless other events are pending */
1221 if (idlecnt && !any_pending (EV_A)) 1644 idle_reify (EV_A);
1222 queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); 1645#endif
1223 1646
1224 /* queue check watchers, to be executed first */ 1647 /* queue check watchers, to be executed first */
1225 if (checkcnt) 1648 if (expect_false (checkcnt))
1226 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 1649 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1227 1650
1228 call_pending (EV_A); 1651 call_pending (EV_A);
1652
1229 } 1653 }
1230 while (activecnt && !loop_done); 1654 while (expect_true (activecnt && !loop_done));
1231 1655
1232 if (loop_done != 2) 1656 if (loop_done == EVUNLOOP_ONE)
1233 loop_done = 0; 1657 loop_done = EVUNLOOP_CANCEL;
1234} 1658}
1235 1659
1236void 1660void
1237ev_unloop (EV_P_ int how) 1661ev_unloop (EV_P_ int how)
1238{ 1662{
1239 loop_done = how; 1663 loop_done = how;
1240} 1664}
1241 1665
1242/*****************************************************************************/ 1666/*****************************************************************************/
1243 1667
1244inline void 1668void inline_size
1245wlist_add (WL *head, WL elem) 1669wlist_add (WL *head, WL elem)
1246{ 1670{
1247 elem->next = *head; 1671 elem->next = *head;
1248 *head = elem; 1672 *head = elem;
1249} 1673}
1250 1674
1251inline void 1675void inline_size
1252wlist_del (WL *head, WL elem) 1676wlist_del (WL *head, WL elem)
1253{ 1677{
1254 while (*head) 1678 while (*head)
1255 { 1679 {
1256 if (*head == elem) 1680 if (*head == elem)
… …
1261 1685
1262 head = &(*head)->next; 1686 head = &(*head)->next;
1263 } 1687 }
1264} 1688}
1265 1689
1266inline void 1690void inline_speed
1267ev_clear_pending (EV_P_ W w) 1691clear_pending (EV_P_ W w)
1268{ 1692{
1269 if (w->pending) 1693 if (w->pending)
1270 { 1694 {
1271 pendings [ABSPRI (w)][w->pending - 1].w = 0; 1695 pendings [ABSPRI (w)][w->pending - 1].w = 0;
1272 w->pending = 0; 1696 w->pending = 0;
1273 } 1697 }
1274} 1698}
1275 1699
1276inline void 1700int
1701ev_clear_pending (EV_P_ void *w)
1702{
1703 W w_ = (W)w;
1704 int pending = w_->pending;
1705
1706 if (expect_true (pending))
1707 {
1708 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
1709 w_->pending = 0;
1710 p->w = 0;
1711 return p->events;
1712 }
1713 else
1714 return 0;
1715}
1716
1717void inline_size
1718pri_adjust (EV_P_ W w)
1719{
1720 int pri = w->priority;
1721 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1722 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1723 w->priority = pri;
1724}
1725
1726void inline_speed
1277ev_start (EV_P_ W w, int active) 1727ev_start (EV_P_ W w, int active)
1278{ 1728{
1279 if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; 1729 pri_adjust (EV_A_ w);
1280 if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1281
1282 w->active = active; 1730 w->active = active;
1283 ev_ref (EV_A); 1731 ev_ref (EV_A);
1284} 1732}
1285 1733
1286inline void 1734void inline_size
1287ev_stop (EV_P_ W w) 1735ev_stop (EV_P_ W w)
1288{ 1736{
1289 ev_unref (EV_A); 1737 ev_unref (EV_A);
1290 w->active = 0; 1738 w->active = 0;
1291} 1739}
1292 1740
1293/*****************************************************************************/ 1741/*****************************************************************************/
1294 1742
1295void 1743void noinline
1296ev_io_start (EV_P_ struct ev_io *w) 1744ev_io_start (EV_P_ ev_io *w)
1297{ 1745{
1298 int fd = w->fd; 1746 int fd = w->fd;
1299 1747
1300 if (ev_is_active (w)) 1748 if (expect_false (ev_is_active (w)))
1301 return; 1749 return;
1302 1750
1303 assert (("ev_io_start called with negative fd", fd >= 0)); 1751 assert (("ev_io_start called with negative fd", fd >= 0));
1304 1752
1305 ev_start (EV_A_ (W)w, 1); 1753 ev_start (EV_A_ (W)w, 1);
1306 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 1754 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1307 wlist_add ((WL *)&anfds[fd].head, (WL)w); 1755 wlist_add (&anfds[fd].head, (WL)w);
1308 1756
1309 fd_change (EV_A_ fd); 1757 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);
1758 w->events &= ~EV_IOFDSET;
1310} 1759}
1311 1760
1312void 1761void noinline
1313ev_io_stop (EV_P_ struct ev_io *w) 1762ev_io_stop (EV_P_ ev_io *w)
1314{ 1763{
1315 ev_clear_pending (EV_A_ (W)w); 1764 clear_pending (EV_A_ (W)w);
1316 if (!ev_is_active (w)) 1765 if (expect_false (!ev_is_active (w)))
1317 return; 1766 return;
1318 1767
1319 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 1768 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1320 1769
1321 wlist_del ((WL *)&anfds[w->fd].head, (WL)w); 1770 wlist_del (&anfds[w->fd].head, (WL)w);
1322 ev_stop (EV_A_ (W)w); 1771 ev_stop (EV_A_ (W)w);
1323 1772
1324 fd_change (EV_A_ w->fd); 1773 fd_change (EV_A_ w->fd, 1);
1325} 1774}
1326 1775
1327void 1776void noinline
1328ev_timer_start (EV_P_ struct ev_timer *w) 1777ev_timer_start (EV_P_ ev_timer *w)
1778{
1779 if (expect_false (ev_is_active (w)))
1780 return;
1781
1782 ((WT)w)->at += mn_now;
1783
1784 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1785
1786 ev_start (EV_A_ (W)w, ++timercnt);
1787 array_needsize (WT, timers, timermax, timercnt, EMPTY2);
1788 timers [timercnt - 1] = (WT)w;
1789 upheap (timers, timercnt - 1);
1790
1791 /*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
1792}
1793
1794void noinline
1795ev_timer_stop (EV_P_ ev_timer *w)
1796{
1797 clear_pending (EV_A_ (W)w);
1798 if (expect_false (!ev_is_active (w)))
1799 return;
1800
1801 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w));
1802
1803 {
1804 int active = ((W)w)->active;
1805
1806 if (expect_true (--active < --timercnt))
1807 {
1808 timers [active] = timers [timercnt];
1809 adjustheap (timers, timercnt, active);
1810 }
1811 }
1812
1813 ((WT)w)->at -= mn_now;
1814
1815 ev_stop (EV_A_ (W)w);
1816}
1817
1818void noinline
1819ev_timer_again (EV_P_ ev_timer *w)
1329{ 1820{
1330 if (ev_is_active (w)) 1821 if (ev_is_active (w))
1331 return;
1332
1333 ((WT)w)->at += mn_now;
1334
1335 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1336
1337 ev_start (EV_A_ (W)w, ++timercnt);
1338 array_needsize (struct ev_timer *, timers, timermax, timercnt, (void));
1339 timers [timercnt - 1] = w;
1340 upheap ((WT *)timers, timercnt - 1);
1341
1342 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1343}
1344
1345void
1346ev_timer_stop (EV_P_ struct ev_timer *w)
1347{
1348 ev_clear_pending (EV_A_ (W)w);
1349 if (!ev_is_active (w))
1350 return;
1351
1352 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1353
1354 if (((W)w)->active < timercnt--)
1355 {
1356 timers [((W)w)->active - 1] = timers [timercnt];
1357 downheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1358 }
1359
1360 ((WT)w)->at -= mn_now;
1361
1362 ev_stop (EV_A_ (W)w);
1363}
1364
1365void
1366ev_timer_again (EV_P_ struct ev_timer *w)
1367{
1368 if (ev_is_active (w))
1369 { 1822 {
1370 if (w->repeat) 1823 if (w->repeat)
1824 {
1825 ((WT)w)->at = mn_now + w->repeat;
1371 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1, mn_now + w->repeat); 1826 adjustheap (timers, timercnt, ((W)w)->active - 1);
1827 }
1372 else 1828 else
1373 ev_timer_stop (EV_A_ w); 1829 ev_timer_stop (EV_A_ w);
1374 } 1830 }
1375 else if (w->repeat) 1831 else if (w->repeat)
1832 {
1833 w->at = w->repeat;
1376 ev_timer_start (EV_A_ w); 1834 ev_timer_start (EV_A_ w);
1835 }
1377} 1836}
1378 1837
1379#if EV_PERIODICS 1838#if EV_PERIODIC_ENABLE
1380void 1839void noinline
1381ev_periodic_start (EV_P_ struct ev_periodic *w) 1840ev_periodic_start (EV_P_ ev_periodic *w)
1382{ 1841{
1383 if (ev_is_active (w)) 1842 if (expect_false (ev_is_active (w)))
1384 return; 1843 return;
1385 1844
1386 if (w->reschedule_cb) 1845 if (w->reschedule_cb)
1387 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 1846 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1388 else if (w->interval) 1847 else if (w->interval)
1389 { 1848 {
1390 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 1849 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1391 /* this formula differs from the one in periodic_reify because we do not always round up */ 1850 /* this formula differs from the one in periodic_reify because we do not always round up */
1392 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval; 1851 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1393 } 1852 }
1853 else
1854 ((WT)w)->at = w->offset;
1394 1855
1395 ev_start (EV_A_ (W)w, ++periodiccnt); 1856 ev_start (EV_A_ (W)w, ++periodiccnt);
1396 array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void)); 1857 array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2);
1397 periodics [periodiccnt - 1] = w; 1858 periodics [periodiccnt - 1] = (WT)w;
1398 upheap ((WT *)periodics, periodiccnt - 1); 1859 upheap (periodics, periodiccnt - 1);
1399 1860
1400 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1861 /*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
1401} 1862}
1402 1863
1403void 1864void noinline
1404ev_periodic_stop (EV_P_ struct ev_periodic *w) 1865ev_periodic_stop (EV_P_ ev_periodic *w)
1405{ 1866{
1406 ev_clear_pending (EV_A_ (W)w); 1867 clear_pending (EV_A_ (W)w);
1407 if (!ev_is_active (w)) 1868 if (expect_false (!ev_is_active (w)))
1408 return; 1869 return;
1409 1870
1410 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1871 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w));
1411 1872
1412 if (((W)w)->active < periodiccnt--) 1873 {
1874 int active = ((W)w)->active;
1875
1876 if (expect_true (--active < --periodiccnt))
1413 { 1877 {
1414 periodics [((W)w)->active - 1] = periodics [periodiccnt]; 1878 periodics [active] = periodics [periodiccnt];
1415 downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1); 1879 adjustheap (periodics, periodiccnt, active);
1416 } 1880 }
1881 }
1417 1882
1418 ev_stop (EV_A_ (W)w); 1883 ev_stop (EV_A_ (W)w);
1419} 1884}
1420 1885
1421void 1886void noinline
1422ev_periodic_again (EV_P_ struct ev_periodic *w) 1887ev_periodic_again (EV_P_ ev_periodic *w)
1423{ 1888{
1424 /* TODO: use adjustheap and recalculation */ 1889 /* TODO: use adjustheap and recalculation */
1425 ev_periodic_stop (EV_A_ w); 1890 ev_periodic_stop (EV_A_ w);
1426 ev_periodic_start (EV_A_ w); 1891 ev_periodic_start (EV_A_ w);
1427} 1892}
1428#endif 1893#endif
1429 1894
1430void
1431ev_idle_start (EV_P_ struct ev_idle *w)
1432{
1433 if (ev_is_active (w))
1434 return;
1435
1436 ev_start (EV_A_ (W)w, ++idlecnt);
1437 array_needsize (struct ev_idle *, idles, idlemax, idlecnt, (void));
1438 idles [idlecnt - 1] = w;
1439}
1440
1441void
1442ev_idle_stop (EV_P_ struct ev_idle *w)
1443{
1444 ev_clear_pending (EV_A_ (W)w);
1445 if (ev_is_active (w))
1446 return;
1447
1448 idles [((W)w)->active - 1] = idles [--idlecnt];
1449 ev_stop (EV_A_ (W)w);
1450}
1451
1452void
1453ev_prepare_start (EV_P_ struct ev_prepare *w)
1454{
1455 if (ev_is_active (w))
1456 return;
1457
1458 ev_start (EV_A_ (W)w, ++preparecnt);
1459 array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, (void));
1460 prepares [preparecnt - 1] = w;
1461}
1462
1463void
1464ev_prepare_stop (EV_P_ struct ev_prepare *w)
1465{
1466 ev_clear_pending (EV_A_ (W)w);
1467 if (ev_is_active (w))
1468 return;
1469
1470 prepares [((W)w)->active - 1] = prepares [--preparecnt];
1471 ev_stop (EV_A_ (W)w);
1472}
1473
1474void
1475ev_check_start (EV_P_ struct ev_check *w)
1476{
1477 if (ev_is_active (w))
1478 return;
1479
1480 ev_start (EV_A_ (W)w, ++checkcnt);
1481 array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void));
1482 checks [checkcnt - 1] = w;
1483}
1484
1485void
1486ev_check_stop (EV_P_ struct ev_check *w)
1487{
1488 ev_clear_pending (EV_A_ (W)w);
1489 if (!ev_is_active (w))
1490 return;
1491
1492 checks [((W)w)->active - 1] = checks [--checkcnt];
1493 ev_stop (EV_A_ (W)w);
1494}
1495
1496#ifndef SA_RESTART 1895#ifndef SA_RESTART
1497# define SA_RESTART 0 1896# define SA_RESTART 0
1498#endif 1897#endif
1499 1898
1500void 1899void noinline
1501ev_signal_start (EV_P_ struct ev_signal *w) 1900ev_signal_start (EV_P_ ev_signal *w)
1502{ 1901{
1503#if EV_MULTIPLICITY 1902#if EV_MULTIPLICITY
1504 assert (("signal watchers are only supported in the default loop", loop == default_loop)); 1903 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1505#endif 1904#endif
1506 if (ev_is_active (w)) 1905 if (expect_false (ev_is_active (w)))
1507 return; 1906 return;
1508 1907
1509 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 1908 assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1510 1909
1910 evpipe_init (EV_A);
1911
1912 {
1913#ifndef _WIN32
1914 sigset_t full, prev;
1915 sigfillset (&full);
1916 sigprocmask (SIG_SETMASK, &full, &prev);
1917#endif
1918
1919 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1920
1921#ifndef _WIN32
1922 sigprocmask (SIG_SETMASK, &prev, 0);
1923#endif
1924 }
1925
1511 ev_start (EV_A_ (W)w, 1); 1926 ev_start (EV_A_ (W)w, 1);
1512 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1513 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); 1927 wlist_add (&signals [w->signum - 1].head, (WL)w);
1514 1928
1515 if (!((WL)w)->next) 1929 if (!((WL)w)->next)
1516 { 1930 {
1517#if WIN32 1931#if _WIN32
1518 signal (w->signum, sighandler); 1932 signal (w->signum, sighandler);
1519#else 1933#else
1520 struct sigaction sa; 1934 struct sigaction sa;
1521 sa.sa_handler = sighandler; 1935 sa.sa_handler = sighandler;
1522 sigfillset (&sa.sa_mask); 1936 sigfillset (&sa.sa_mask);
… …
1524 sigaction (w->signum, &sa, 0); 1938 sigaction (w->signum, &sa, 0);
1525#endif 1939#endif
1526 } 1940 }
1527} 1941}
1528 1942
1529void 1943void noinline
1530ev_signal_stop (EV_P_ struct ev_signal *w) 1944ev_signal_stop (EV_P_ ev_signal *w)
1531{ 1945{
1532 ev_clear_pending (EV_A_ (W)w); 1946 clear_pending (EV_A_ (W)w);
1533 if (!ev_is_active (w)) 1947 if (expect_false (!ev_is_active (w)))
1534 return; 1948 return;
1535 1949
1536 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); 1950 wlist_del (&signals [w->signum - 1].head, (WL)w);
1537 ev_stop (EV_A_ (W)w); 1951 ev_stop (EV_A_ (W)w);
1538 1952
1539 if (!signals [w->signum - 1].head) 1953 if (!signals [w->signum - 1].head)
1540 signal (w->signum, SIG_DFL); 1954 signal (w->signum, SIG_DFL);
1541} 1955}
1542 1956
1543void 1957void
1544ev_child_start (EV_P_ struct ev_child *w) 1958ev_child_start (EV_P_ ev_child *w)
1545{ 1959{
1546#if EV_MULTIPLICITY 1960#if EV_MULTIPLICITY
1547 assert (("child watchers are only supported in the default loop", loop == default_loop)); 1961 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1548#endif 1962#endif
1549 if (ev_is_active (w)) 1963 if (expect_false (ev_is_active (w)))
1550 return; 1964 return;
1551 1965
1552 ev_start (EV_A_ (W)w, 1); 1966 ev_start (EV_A_ (W)w, 1);
1553 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1967 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1554} 1968}
1555 1969
1556void 1970void
1557ev_child_stop (EV_P_ struct ev_child *w) 1971ev_child_stop (EV_P_ ev_child *w)
1558{ 1972{
1559 ev_clear_pending (EV_A_ (W)w); 1973 clear_pending (EV_A_ (W)w);
1560 if (!ev_is_active (w)) 1974 if (expect_false (!ev_is_active (w)))
1561 return; 1975 return;
1562 1976
1563 wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1977 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1564 ev_stop (EV_A_ (W)w); 1978 ev_stop (EV_A_ (W)w);
1565} 1979}
1566 1980
1981#if EV_STAT_ENABLE
1982
1983# ifdef _WIN32
1984# undef lstat
1985# define lstat(a,b) _stati64 (a,b)
1986# endif
1987
1988#define DEF_STAT_INTERVAL 5.0074891
1989#define MIN_STAT_INTERVAL 0.1074891
1990
1991static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
1992
1993#if EV_USE_INOTIFY
1994# define EV_INOTIFY_BUFSIZE 8192
1995
1996static void noinline
1997infy_add (EV_P_ ev_stat *w)
1998{
1999 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);
2000
2001 if (w->wd < 0)
2002 {
2003 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2004
2005 /* monitor some parent directory for speedup hints */
2006 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2007 {
2008 char path [4096];
2009 strcpy (path, w->path);
2010
2011 do
2012 {
2013 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2014 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2015
2016 char *pend = strrchr (path, '/');
2017
2018 if (!pend)
2019 break; /* whoops, no '/', complain to your admin */
2020
2021 *pend = 0;
2022 w->wd = inotify_add_watch (fs_fd, path, mask);
2023 }
2024 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2025 }
2026 }
2027 else
2028 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2029
2030 if (w->wd >= 0)
2031 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2032}
2033
2034static void noinline
2035infy_del (EV_P_ ev_stat *w)
2036{
2037 int slot;
2038 int wd = w->wd;
2039
2040 if (wd < 0)
2041 return;
2042
2043 w->wd = -2;
2044 slot = wd & (EV_INOTIFY_HASHSIZE - 1);
2045 wlist_del (&fs_hash [slot].head, (WL)w);
2046
2047 /* remove this watcher, if others are watching it, they will rearm */
2048 inotify_rm_watch (fs_fd, wd);
2049}
2050
2051static void noinline
2052infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2053{
2054 if (slot < 0)
2055 /* overflow, need to check for all hahs slots */
2056 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2057 infy_wd (EV_A_ slot, wd, ev);
2058 else
2059 {
2060 WL w_;
2061
2062 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
2063 {
2064 ev_stat *w = (ev_stat *)w_;
2065 w_ = w_->next; /* lets us remove this watcher and all before it */
2066
2067 if (w->wd == wd || wd == -1)
2068 {
2069 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2070 {
2071 w->wd = -1;
2072 infy_add (EV_A_ w); /* re-add, no matter what */
2073 }
2074
2075 stat_timer_cb (EV_A_ &w->timer, 0);
2076 }
2077 }
2078 }
2079}
2080
2081static void
2082infy_cb (EV_P_ ev_io *w, int revents)
2083{
2084 char buf [EV_INOTIFY_BUFSIZE];
2085 struct inotify_event *ev = (struct inotify_event *)buf;
2086 int ofs;
2087 int len = read (fs_fd, buf, sizeof (buf));
2088
2089 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
2090 infy_wd (EV_A_ ev->wd, ev->wd, ev);
2091}
2092
2093void inline_size
2094infy_init (EV_P)
2095{
2096 if (fs_fd != -2)
2097 return;
2098
2099 fs_fd = inotify_init ();
2100
2101 if (fs_fd >= 0)
2102 {
2103 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2104 ev_set_priority (&fs_w, EV_MAXPRI);
2105 ev_io_start (EV_A_ &fs_w);
2106 }
2107}
2108
2109void inline_size
2110infy_fork (EV_P)
2111{
2112 int slot;
2113
2114 if (fs_fd < 0)
2115 return;
2116
2117 close (fs_fd);
2118 fs_fd = inotify_init ();
2119
2120 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2121 {
2122 WL w_ = fs_hash [slot].head;
2123 fs_hash [slot].head = 0;
2124
2125 while (w_)
2126 {
2127 ev_stat *w = (ev_stat *)w_;
2128 w_ = w_->next; /* lets us add this watcher */
2129
2130 w->wd = -1;
2131
2132 if (fs_fd >= 0)
2133 infy_add (EV_A_ w); /* re-add, no matter what */
2134 else
2135 ev_timer_start (EV_A_ &w->timer);
2136 }
2137
2138 }
2139}
2140
2141#endif
2142
2143void
2144ev_stat_stat (EV_P_ ev_stat *w)
2145{
2146 if (lstat (w->path, &w->attr) < 0)
2147 w->attr.st_nlink = 0;
2148 else if (!w->attr.st_nlink)
2149 w->attr.st_nlink = 1;
2150}
2151
2152static void noinline
2153stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2154{
2155 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2156
2157 /* we copy this here each the time so that */
2158 /* prev has the old value when the callback gets invoked */
2159 w->prev = w->attr;
2160 ev_stat_stat (EV_A_ w);
2161
2162 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2163 if (
2164 w->prev.st_dev != w->attr.st_dev
2165 || w->prev.st_ino != w->attr.st_ino
2166 || w->prev.st_mode != w->attr.st_mode
2167 || w->prev.st_nlink != w->attr.st_nlink
2168 || w->prev.st_uid != w->attr.st_uid
2169 || w->prev.st_gid != w->attr.st_gid
2170 || w->prev.st_rdev != w->attr.st_rdev
2171 || w->prev.st_size != w->attr.st_size
2172 || w->prev.st_atime != w->attr.st_atime
2173 || w->prev.st_mtime != w->attr.st_mtime
2174 || w->prev.st_ctime != w->attr.st_ctime
2175 ) {
2176 #if EV_USE_INOTIFY
2177 infy_del (EV_A_ w);
2178 infy_add (EV_A_ w);
2179 ev_stat_stat (EV_A_ w); /* avoid race... */
2180 #endif
2181
2182 ev_feed_event (EV_A_ w, EV_STAT);
2183 }
2184}
2185
2186void
2187ev_stat_start (EV_P_ ev_stat *w)
2188{
2189 if (expect_false (ev_is_active (w)))
2190 return;
2191
2192 /* since we use memcmp, we need to clear any padding data etc. */
2193 memset (&w->prev, 0, sizeof (ev_statdata));
2194 memset (&w->attr, 0, sizeof (ev_statdata));
2195
2196 ev_stat_stat (EV_A_ w);
2197
2198 if (w->interval < MIN_STAT_INTERVAL)
2199 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2200
2201 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
2202 ev_set_priority (&w->timer, ev_priority (w));
2203
2204#if EV_USE_INOTIFY
2205 infy_init (EV_A);
2206
2207 if (fs_fd >= 0)
2208 infy_add (EV_A_ w);
2209 else
2210#endif
2211 ev_timer_start (EV_A_ &w->timer);
2212
2213 ev_start (EV_A_ (W)w, 1);
2214}
2215
2216void
2217ev_stat_stop (EV_P_ ev_stat *w)
2218{
2219 clear_pending (EV_A_ (W)w);
2220 if (expect_false (!ev_is_active (w)))
2221 return;
2222
2223#if EV_USE_INOTIFY
2224 infy_del (EV_A_ w);
2225#endif
2226 ev_timer_stop (EV_A_ &w->timer);
2227
2228 ev_stop (EV_A_ (W)w);
2229}
2230#endif
2231
2232#if EV_IDLE_ENABLE
2233void
2234ev_idle_start (EV_P_ ev_idle *w)
2235{
2236 if (expect_false (ev_is_active (w)))
2237 return;
2238
2239 pri_adjust (EV_A_ (W)w);
2240
2241 {
2242 int active = ++idlecnt [ABSPRI (w)];
2243
2244 ++idleall;
2245 ev_start (EV_A_ (W)w, active);
2246
2247 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2248 idles [ABSPRI (w)][active - 1] = w;
2249 }
2250}
2251
2252void
2253ev_idle_stop (EV_P_ ev_idle *w)
2254{
2255 clear_pending (EV_A_ (W)w);
2256 if (expect_false (!ev_is_active (w)))
2257 return;
2258
2259 {
2260 int active = ((W)w)->active;
2261
2262 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2263 ((W)idles [ABSPRI (w)][active - 1])->active = active;
2264
2265 ev_stop (EV_A_ (W)w);
2266 --idleall;
2267 }
2268}
2269#endif
2270
2271void
2272ev_prepare_start (EV_P_ ev_prepare *w)
2273{
2274 if (expect_false (ev_is_active (w)))
2275 return;
2276
2277 ev_start (EV_A_ (W)w, ++preparecnt);
2278 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2279 prepares [preparecnt - 1] = w;
2280}
2281
2282void
2283ev_prepare_stop (EV_P_ ev_prepare *w)
2284{
2285 clear_pending (EV_A_ (W)w);
2286 if (expect_false (!ev_is_active (w)))
2287 return;
2288
2289 {
2290 int active = ((W)w)->active;
2291 prepares [active - 1] = prepares [--preparecnt];
2292 ((W)prepares [active - 1])->active = active;
2293 }
2294
2295 ev_stop (EV_A_ (W)w);
2296}
2297
2298void
2299ev_check_start (EV_P_ ev_check *w)
2300{
2301 if (expect_false (ev_is_active (w)))
2302 return;
2303
2304 ev_start (EV_A_ (W)w, ++checkcnt);
2305 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2306 checks [checkcnt - 1] = w;
2307}
2308
2309void
2310ev_check_stop (EV_P_ ev_check *w)
2311{
2312 clear_pending (EV_A_ (W)w);
2313 if (expect_false (!ev_is_active (w)))
2314 return;
2315
2316 {
2317 int active = ((W)w)->active;
2318 checks [active - 1] = checks [--checkcnt];
2319 ((W)checks [active - 1])->active = active;
2320 }
2321
2322 ev_stop (EV_A_ (W)w);
2323}
2324
2325#if EV_EMBED_ENABLE
2326void noinline
2327ev_embed_sweep (EV_P_ ev_embed *w)
2328{
2329 ev_loop (w->other, EVLOOP_NONBLOCK);
2330}
2331
2332static void
2333embed_io_cb (EV_P_ ev_io *io, int revents)
2334{
2335 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2336
2337 if (ev_cb (w))
2338 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2339 else
2340 ev_loop (w->other, EVLOOP_NONBLOCK);
2341}
2342
2343static void
2344embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2345{
2346 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2347
2348 {
2349 struct ev_loop *loop = w->other;
2350
2351 while (fdchangecnt)
2352 {
2353 fd_reify (EV_A);
2354 ev_loop (EV_A_ EVLOOP_NONBLOCK);
2355 }
2356 }
2357}
2358
2359#if 0
2360static void
2361embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2362{
2363 ev_idle_stop (EV_A_ idle);
2364}
2365#endif
2366
2367void
2368ev_embed_start (EV_P_ ev_embed *w)
2369{
2370 if (expect_false (ev_is_active (w)))
2371 return;
2372
2373 {
2374 struct ev_loop *loop = w->other;
2375 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2376 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2377 }
2378
2379 ev_set_priority (&w->io, ev_priority (w));
2380 ev_io_start (EV_A_ &w->io);
2381
2382 ev_prepare_init (&w->prepare, embed_prepare_cb);
2383 ev_set_priority (&w->prepare, EV_MINPRI);
2384 ev_prepare_start (EV_A_ &w->prepare);
2385
2386 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2387
2388 ev_start (EV_A_ (W)w, 1);
2389}
2390
2391void
2392ev_embed_stop (EV_P_ ev_embed *w)
2393{
2394 clear_pending (EV_A_ (W)w);
2395 if (expect_false (!ev_is_active (w)))
2396 return;
2397
2398 ev_io_stop (EV_A_ &w->io);
2399 ev_prepare_stop (EV_A_ &w->prepare);
2400
2401 ev_stop (EV_A_ (W)w);
2402}
2403#endif
2404
2405#if EV_FORK_ENABLE
2406void
2407ev_fork_start (EV_P_ ev_fork *w)
2408{
2409 if (expect_false (ev_is_active (w)))
2410 return;
2411
2412 ev_start (EV_A_ (W)w, ++forkcnt);
2413 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2414 forks [forkcnt - 1] = w;
2415}
2416
2417void
2418ev_fork_stop (EV_P_ ev_fork *w)
2419{
2420 clear_pending (EV_A_ (W)w);
2421 if (expect_false (!ev_is_active (w)))
2422 return;
2423
2424 {
2425 int active = ((W)w)->active;
2426 forks [active - 1] = forks [--forkcnt];
2427 ((W)forks [active - 1])->active = active;
2428 }
2429
2430 ev_stop (EV_A_ (W)w);
2431}
2432#endif
2433
2434#if EV_ASYNC_ENABLE
2435void
2436ev_async_start (EV_P_ ev_async *w)
2437{
2438 if (expect_false (ev_is_active (w)))
2439 return;
2440
2441 evpipe_init (EV_A);
2442
2443 ev_start (EV_A_ (W)w, ++asynccnt);
2444 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
2445 asyncs [asynccnt - 1] = w;
2446}
2447
2448void
2449ev_async_stop (EV_P_ ev_async *w)
2450{
2451 clear_pending (EV_A_ (W)w);
2452 if (expect_false (!ev_is_active (w)))
2453 return;
2454
2455 {
2456 int active = ((W)w)->active;
2457 asyncs [active - 1] = asyncs [--asynccnt];
2458 ((W)asyncs [active - 1])->active = active;
2459 }
2460
2461 ev_stop (EV_A_ (W)w);
2462}
2463
2464void
2465ev_async_send (EV_P_ ev_async *w)
2466{
2467 w->sent = 1;
2468 evpipe_write (EV_A_ 0, 1);
2469}
2470#endif
2471
1567/*****************************************************************************/ 2472/*****************************************************************************/
1568 2473
1569struct ev_once 2474struct ev_once
1570{ 2475{
1571 struct ev_io io; 2476 ev_io io;
1572 struct ev_timer to; 2477 ev_timer to;
1573 void (*cb)(int revents, void *arg); 2478 void (*cb)(int revents, void *arg);
1574 void *arg; 2479 void *arg;
1575}; 2480};
1576 2481
1577static void 2482static void
… …
1586 2491
1587 cb (revents, arg); 2492 cb (revents, arg);
1588} 2493}
1589 2494
1590static void 2495static void
1591once_cb_io (EV_P_ struct ev_io *w, int revents) 2496once_cb_io (EV_P_ ev_io *w, int revents)
1592{ 2497{
1593 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 2498 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1594} 2499}
1595 2500
1596static void 2501static void
1597once_cb_to (EV_P_ struct ev_timer *w, int revents) 2502once_cb_to (EV_P_ ev_timer *w, int revents)
1598{ 2503{
1599 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 2504 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1600} 2505}
1601 2506
1602void 2507void
1603ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 2508ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1604{ 2509{
1605 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 2510 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1606 2511
1607 if (!once) 2512 if (expect_false (!once))
2513 {
1608 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 2514 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1609 else 2515 return;
1610 { 2516 }
2517
1611 once->cb = cb; 2518 once->cb = cb;
1612 once->arg = arg; 2519 once->arg = arg;
1613 2520
1614 ev_init (&once->io, once_cb_io); 2521 ev_init (&once->io, once_cb_io);
1615 if (fd >= 0) 2522 if (fd >= 0)
1616 { 2523 {
1617 ev_io_set (&once->io, fd, events); 2524 ev_io_set (&once->io, fd, events);
1618 ev_io_start (EV_A_ &once->io); 2525 ev_io_start (EV_A_ &once->io);
1619 } 2526 }
1620 2527
1621 ev_init (&once->to, once_cb_to); 2528 ev_init (&once->to, once_cb_to);
1622 if (timeout >= 0.) 2529 if (timeout >= 0.)
1623 { 2530 {
1624 ev_timer_set (&once->to, timeout, 0.); 2531 ev_timer_set (&once->to, timeout, 0.);
1625 ev_timer_start (EV_A_ &once->to); 2532 ev_timer_start (EV_A_ &once->to);
1626 }
1627 } 2533 }
1628} 2534}
2535
2536#if EV_MULTIPLICITY
2537 #include "ev_wrap.h"
2538#endif
1629 2539
1630#ifdef __cplusplus 2540#ifdef __cplusplus
1631} 2541}
1632#endif 2542#endif
1633 2543

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