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Comparing libev/ev.c (file contents):
Revision 1.84 by root, Fri Nov 9 23:04:35 2007 UTC vs.
Revision 1.210 by root, Sat Feb 9 00:34:11 2008 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007,2008 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * modification, are permitted provided that the following conditions are 8 * tion, are permitted provided that the following conditions are met:
9 * met: 9 *
10 * 1. Redistributions of source code must retain the above copyright notice,
11 * this list of conditions and the following disclaimer.
12 *
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
22 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
23 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
24 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
25 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
26 * OF THE POSSIBILITY OF SUCH DAMAGE.
10 * 27 *
11 * * Redistributions of source code must retain the above copyright 28 * Alternatively, the contents of this file may be used under the terms of
12 * notice, this list of conditions and the following disclaimer. 29 * the GNU General Public License ("GPL") version 2 or any later version,
13 * 30 * in which case the provisions of the GPL are applicable instead of
14 * * Redistributions in binary form must reproduce the above 31 * the above. If you wish to allow the use of your version of this file
15 * copyright notice, this list of conditions and the following 32 * only under the terms of the GPL and not to allow others to use your
16 * disclaimer in the documentation and/or other materials provided 33 * version of this file under the BSD license, indicate your decision
17 * with the distribution. 34 * by deleting the provisions above and replace them with the notice
18 * 35 * and other provisions required by the GPL. If you do not delete the
19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 36 * provisions above, a recipient may use your version of this file under
20 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 37 * either the BSD or the GPL.
21 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
22 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
23 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
24 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
25 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
26 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
29 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 */ 38 */
39
40#ifdef __cplusplus
41extern "C" {
42#endif
43
31#ifndef EV_STANDALONE 44#ifndef EV_STANDALONE
45# ifdef EV_CONFIG_H
46# include EV_CONFIG_H
47# else
32# include "config.h" 48# include "config.h"
49# endif
33 50
34# if HAVE_CLOCK_GETTIME 51# if HAVE_CLOCK_GETTIME
52# ifndef EV_USE_MONOTONIC
35# define EV_USE_MONOTONIC 1 53# define EV_USE_MONOTONIC 1
54# endif
55# ifndef EV_USE_REALTIME
36# define EV_USE_REALTIME 1 56# define EV_USE_REALTIME 1
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
37# endif 65# endif
38 66
39# if HAVE_SELECT && HAVE_SYS_SELECT_H 67# ifndef EV_USE_NANOSLEEP
68# if HAVE_NANOSLEEP
40# define EV_USE_SELECT 1 69# define EV_USE_NANOSLEEP 1
70# else
71# define EV_USE_NANOSLEEP 0
72# endif
41# endif 73# endif
42 74
43# if HAVE_POLL && HAVE_POLL_H 75# ifndef EV_USE_SELECT
76# if HAVE_SELECT && HAVE_SYS_SELECT_H
44# define EV_USE_POLL 1 77# define EV_USE_SELECT 1
78# else
79# define EV_USE_SELECT 0
80# endif
45# endif 81# endif
46 82
47# if HAVE_EPOLL && HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H 83# ifndef EV_USE_POLL
84# if HAVE_POLL && HAVE_POLL_H
48# define EV_USE_EPOLL 1 85# define EV_USE_POLL 1
86# else
87# define EV_USE_POLL 0
88# endif
49# endif 89# endif
50 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
51# if HAVE_KQUEUE && HAVE_WORKING_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H 100# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H
52# 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
53# endif 121# endif
54 122
55#endif 123#endif
56 124
57#include <math.h> 125#include <math.h>
… …
66#include <sys/types.h> 134#include <sys/types.h>
67#include <time.h> 135#include <time.h>
68 136
69#include <signal.h> 137#include <signal.h>
70 138
71#ifndef WIN32
72# include <unistd.h>
73# include <sys/time.h>
74# include <sys/wait.h>
75#endif
76/**/
77
78#ifndef EV_USE_MONOTONIC
79# define EV_USE_MONOTONIC 1
80#endif
81
82#ifndef EV_USE_SELECT
83# define EV_USE_SELECT 1
84#endif
85
86#ifndef EV_USE_POLL
87# define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */
88#endif
89
90#ifndef EV_USE_EPOLL
91# define EV_USE_EPOLL 0
92#endif
93
94#ifndef EV_USE_KQUEUE
95# define EV_USE_KQUEUE 0
96#endif
97
98#ifndef EV_USE_WIN32
99# ifdef WIN32
100# define EV_USE_WIN32 0 /* it does not exist, use select */
101# undef EV_USE_SELECT
102# define EV_USE_SELECT 1
103# else
104# define EV_USE_WIN32 0
105# endif
106#endif
107
108#ifndef EV_USE_REALTIME
109# define EV_USE_REALTIME 1
110#endif
111
112/**/
113
114#ifndef CLOCK_MONOTONIC
115# undef EV_USE_MONOTONIC
116# define EV_USE_MONOTONIC 0
117#endif
118
119#ifndef CLOCK_REALTIME
120# undef EV_USE_REALTIME
121# define EV_USE_REALTIME 0
122#endif
123
124/**/
125
126#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
127#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */
128#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
129/*#define CLEANUP_INTERVAL 300. /* how often to try to free memory and re-check fds */
130
131#ifdef EV_H 139#ifdef EV_H
132# include EV_H 140# include EV_H
133#else 141#else
134# include "ev.h" 142# include "ev.h"
135#endif 143#endif
136 144
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
137#if __GNUC__ >= 3 262#if __GNUC__ >= 4
138# define expect(expr,value) __builtin_expect ((expr),(value)) 263# define expect(expr,value) __builtin_expect ((expr),(value))
139# define inline inline 264# define noinline __attribute__ ((noinline))
140#else 265#else
141# define expect(expr,value) (expr) 266# define expect(expr,value) (expr)
142# define inline static 267# define noinline
268# if __STDC_VERSION__ < 199901L
269# define inline
270# endif
143#endif 271#endif
144 272
145#define expect_false(expr) expect ((expr) != 0, 0) 273#define expect_false(expr) expect ((expr) != 0, 0)
146#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
147 282
148#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 283#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
149#define ABSPRI(w) ((w)->priority - EV_MINPRI) 284#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
150 285
286#define EMPTY /* required for microsofts broken pseudo-c compiler */
287#define EMPTY2(a,b) /* used to suppress some warnings */
288
151typedef struct ev_watcher *W; 289typedef ev_watcher *W;
152typedef struct ev_watcher_list *WL; 290typedef ev_watcher_list *WL;
153typedef struct ev_watcher_time *WT; 291typedef ev_watcher_time *WT;
154 292
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 */
155static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 296static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
297#endif
156 298
299#ifdef _WIN32
157#include "ev_win32.c" 300# include "ev_win32.c"
301#endif
158 302
159/*****************************************************************************/ 303/*****************************************************************************/
160 304
161static void (*syserr_cb)(const char *msg); 305static void (*syserr_cb)(const char *msg);
162 306
307void
163void ev_set_syserr_cb (void (*cb)(const char *msg)) 308ev_set_syserr_cb (void (*cb)(const char *msg))
164{ 309{
165 syserr_cb = cb; 310 syserr_cb = cb;
166} 311}
167 312
168static void 313static void noinline
169syserr (const char *msg) 314syserr (const char *msg)
170{ 315{
171 if (!msg) 316 if (!msg)
172 msg = "(libev) system error"; 317 msg = "(libev) system error";
173 318
… …
180 } 325 }
181} 326}
182 327
183static void *(*alloc)(void *ptr, long size); 328static void *(*alloc)(void *ptr, long size);
184 329
330void
185void ev_set_allocator (void *(*cb)(void *ptr, long size)) 331ev_set_allocator (void *(*cb)(void *ptr, long size))
186{ 332{
187 alloc = cb; 333 alloc = cb;
188} 334}
189 335
190static void * 336inline_speed void *
191ev_realloc (void *ptr, long size) 337ev_realloc (void *ptr, long size)
192{ 338{
193 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size); 339 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
194 340
195 if (!ptr && size) 341 if (!ptr && size)
… …
209typedef struct 355typedef struct
210{ 356{
211 WL head; 357 WL head;
212 unsigned char events; 358 unsigned char events;
213 unsigned char reify; 359 unsigned char reify;
360#if EV_SELECT_IS_WINSOCKET
361 SOCKET handle;
362#endif
214} ANFD; 363} ANFD;
215 364
216typedef struct 365typedef struct
217{ 366{
218 W w; 367 W w;
219 int events; 368 int events;
220} ANPENDING; 369} ANPENDING;
221 370
371#if EV_USE_INOTIFY
372typedef struct
373{
374 WL head;
375} ANFS;
376#endif
377
222#if EV_MULTIPLICITY 378#if EV_MULTIPLICITY
223 379
224 struct ev_loop 380 struct ev_loop
225 { 381 {
382 ev_tstamp ev_rt_now;
383 #define ev_rt_now ((loop)->ev_rt_now)
226 #define VAR(name,decl) decl; 384 #define VAR(name,decl) decl;
227 #include "ev_vars.h" 385 #include "ev_vars.h"
228 #undef VAR 386 #undef VAR
229 }; 387 };
230 #include "ev_wrap.h" 388 #include "ev_wrap.h"
231 389
232 struct ev_loop default_loop_struct; 390 static struct ev_loop default_loop_struct;
233 static struct ev_loop *default_loop; 391 struct ev_loop *ev_default_loop_ptr;
234 392
235#else 393#else
236 394
395 ev_tstamp ev_rt_now;
237 #define VAR(name,decl) static decl; 396 #define VAR(name,decl) static decl;
238 #include "ev_vars.h" 397 #include "ev_vars.h"
239 #undef VAR 398 #undef VAR
240 399
241 static int default_loop; 400 static int ev_default_loop_ptr;
242 401
243#endif 402#endif
244 403
245/*****************************************************************************/ 404/*****************************************************************************/
246 405
247inline ev_tstamp 406ev_tstamp
248ev_time (void) 407ev_time (void)
249{ 408{
250#if EV_USE_REALTIME 409#if EV_USE_REALTIME
251 struct timespec ts; 410 struct timespec ts;
252 clock_gettime (CLOCK_REALTIME, &ts); 411 clock_gettime (CLOCK_REALTIME, &ts);
… …
256 gettimeofday (&tv, 0); 415 gettimeofday (&tv, 0);
257 return tv.tv_sec + tv.tv_usec * 1e-6; 416 return tv.tv_sec + tv.tv_usec * 1e-6;
258#endif 417#endif
259} 418}
260 419
261inline ev_tstamp 420ev_tstamp inline_size
262get_clock (void) 421get_clock (void)
263{ 422{
264#if EV_USE_MONOTONIC 423#if EV_USE_MONOTONIC
265 if (expect_true (have_monotonic)) 424 if (expect_true (have_monotonic))
266 { 425 {
… …
271#endif 430#endif
272 431
273 return ev_time (); 432 return ev_time ();
274} 433}
275 434
435#if EV_MULTIPLICITY
276ev_tstamp 436ev_tstamp
277ev_now (EV_P) 437ev_now (EV_P)
278{ 438{
279 return rt_now; 439 return ev_rt_now;
280} 440}
441#endif
281 442
282#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}
283 497
284#define array_needsize(type,base,cur,cnt,init) \ 498#define array_needsize(type,base,cur,cnt,init) \
285 if (expect_false ((cnt) > cur)) \ 499 if (expect_false ((cnt) > (cur))) \
286 { \ 500 { \
287 int newcnt = cur; \ 501 int ocur_ = (cur); \
288 do \ 502 (base) = (type *)array_realloc \
289 { \ 503 (sizeof (type), (base), &(cur), (cnt)); \
290 newcnt = array_roundsize (type, newcnt << 1); \ 504 init ((base) + (ocur_), (cur) - ocur_); \
291 } \
292 while ((cnt) > newcnt); \
293 \
294 base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\
295 init (base + cur, newcnt - cur); \
296 cur = newcnt; \
297 } 505 }
298 506
507#if 0
299#define array_slim(type,stem) \ 508#define array_slim(type,stem) \
300 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 509 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
301 { \ 510 { \
302 stem ## max = array_roundsize (stem ## cnt >> 1); \ 511 stem ## max = array_roundsize (stem ## cnt >> 1); \
303 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\ 512 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
304 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 513 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
305 } 514 }
306 515#endif
307/* microsoft's pseudo-c is quite far from C as the rest of the world and the standard knows it */
308/* bringing us everlasting joy in form of stupid extra macros that are not required in C */
309#define array_free_microshit(stem) \
310 ev_free (stem ## s); stem ## cnt = stem ## max = 0;
311 516
312#define array_free(stem, idx) \ 517#define array_free(stem, idx) \
313 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;
314 519
315/*****************************************************************************/ 520/*****************************************************************************/
316 521
317static 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
318anfds_init (ANFD *base, int count) 551anfds_init (ANFD *base, int count)
319{ 552{
320 while (count--) 553 while (count--)
321 { 554 {
322 base->head = 0; 555 base->head = 0;
… …
325 558
326 ++base; 559 ++base;
327 } 560 }
328} 561}
329 562
330void 563void inline_speed
331ev_feed_event (EV_P_ void *w, int revents)
332{
333 W w_ = (W)w;
334
335 if (w_->pending)
336 {
337 pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
338 return;
339 }
340
341 w_->pending = ++pendingcnt [ABSPRI (w_)];
342 array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], (void));
343 pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
344 pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
345}
346
347static void
348queue_events (EV_P_ W *events, int eventcnt, int type)
349{
350 int i;
351
352 for (i = 0; i < eventcnt; ++i)
353 ev_feed_event (EV_A_ events [i], type);
354}
355
356inline void
357fd_event (EV_P_ int fd, int revents) 564fd_event (EV_P_ int fd, int revents)
358{ 565{
359 ANFD *anfd = anfds + fd; 566 ANFD *anfd = anfds + fd;
360 struct ev_io *w; 567 ev_io *w;
361 568
362 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)
363 { 570 {
364 int ev = w->events & revents; 571 int ev = w->events & revents;
365 572
366 if (ev) 573 if (ev)
367 ev_feed_event (EV_A_ (W)w, ev); 574 ev_feed_event (EV_A_ (W)w, ev);
… …
369} 576}
370 577
371void 578void
372ev_feed_fd_event (EV_P_ int fd, int revents) 579ev_feed_fd_event (EV_P_ int fd, int revents)
373{ 580{
581 if (fd >= 0 && fd < anfdmax)
374 fd_event (EV_A_ fd, revents); 582 fd_event (EV_A_ fd, revents);
375} 583}
376 584
377/*****************************************************************************/ 585void inline_size
378
379static void
380fd_reify (EV_P) 586fd_reify (EV_P)
381{ 587{
382 int i; 588 int i;
383 589
384 for (i = 0; i < fdchangecnt; ++i) 590 for (i = 0; i < fdchangecnt; ++i)
385 { 591 {
386 int fd = fdchanges [i]; 592 int fd = fdchanges [i];
387 ANFD *anfd = anfds + fd; 593 ANFD *anfd = anfds + fd;
388 struct ev_io *w; 594 ev_io *w;
389 595
390 int events = 0; 596 unsigned char events = 0;
391 597
392 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)
393 events |= w->events; 599 events |= (unsigned char)w->events;
394 600
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
395 anfd->reify = 0; 618 anfd->reify = 0;
396
397 method_modify (EV_A_ fd, anfd->events, events);
398 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 }
399 } 624 }
400 625
401 fdchangecnt = 0; 626 fdchangecnt = 0;
402} 627}
403 628
404static void 629void inline_size
405fd_change (EV_P_ int fd) 630fd_change (EV_P_ int fd, int flags)
406{ 631{
407 if (anfds [fd].reify) 632 unsigned char reify = anfds [fd].reify;
408 return;
409
410 anfds [fd].reify = 1; 633 anfds [fd].reify |= flags;
411 634
635 if (expect_true (!reify))
636 {
412 ++fdchangecnt; 637 ++fdchangecnt;
413 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void)); 638 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
414 fdchanges [fdchangecnt - 1] = fd; 639 fdchanges [fdchangecnt - 1] = fd;
640 }
415} 641}
416 642
417static void 643void inline_speed
418fd_kill (EV_P_ int fd) 644fd_kill (EV_P_ int fd)
419{ 645{
420 struct ev_io *w; 646 ev_io *w;
421 647
422 while ((w = (struct ev_io *)anfds [fd].head)) 648 while ((w = (ev_io *)anfds [fd].head))
423 { 649 {
424 ev_io_stop (EV_A_ w); 650 ev_io_stop (EV_A_ w);
425 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);
426 } 652 }
427} 653}
428 654
429static int 655int inline_size
430fd_valid (int fd) 656fd_valid (int fd)
431{ 657{
432#ifdef WIN32 658#ifdef _WIN32
433 return !!win32_get_osfhandle (fd); 659 return _get_osfhandle (fd) != -1;
434#else 660#else
435 return fcntl (fd, F_GETFD) != -1; 661 return fcntl (fd, F_GETFD) != -1;
436#endif 662#endif
437} 663}
438 664
439/* called on EBADF to verify fds */ 665/* called on EBADF to verify fds */
440static void 666static void noinline
441fd_ebadf (EV_P) 667fd_ebadf (EV_P)
442{ 668{
443 int fd; 669 int fd;
444 670
445 for (fd = 0; fd < anfdmax; ++fd) 671 for (fd = 0; fd < anfdmax; ++fd)
… …
447 if (!fd_valid (fd) == -1 && errno == EBADF) 673 if (!fd_valid (fd) == -1 && errno == EBADF)
448 fd_kill (EV_A_ fd); 674 fd_kill (EV_A_ fd);
449} 675}
450 676
451/* 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 */
452static void 678static void noinline
453fd_enomem (EV_P) 679fd_enomem (EV_P)
454{ 680{
455 int fd; 681 int fd;
456 682
457 for (fd = anfdmax; fd--; ) 683 for (fd = anfdmax; fd--; )
… …
460 fd_kill (EV_A_ fd); 686 fd_kill (EV_A_ fd);
461 return; 687 return;
462 } 688 }
463} 689}
464 690
465/* 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 */
466static void 692static void noinline
467fd_rearm_all (EV_P) 693fd_rearm_all (EV_P)
468{ 694{
469 int fd; 695 int fd;
470 696
471 /* this should be highly optimised to not do anything but set a flag */
472 for (fd = 0; fd < anfdmax; ++fd) 697 for (fd = 0; fd < anfdmax; ++fd)
473 if (anfds [fd].events) 698 if (anfds [fd].events)
474 { 699 {
475 anfds [fd].events = 0; 700 anfds [fd].events = 0;
476 fd_change (EV_A_ fd); 701 fd_change (EV_A_ fd, EV_IOFDSET | 1);
477 } 702 }
478} 703}
479 704
480/*****************************************************************************/ 705/*****************************************************************************/
481 706
482static void 707void inline_speed
483upheap (WT *heap, int k) 708upheap (WT *heap, int k)
484{ 709{
485 WT w = heap [k]; 710 WT w = heap [k];
486 711
487 while (k && heap [k >> 1]->at > w->at) 712 while (k)
488 { 713 {
714 int p = (k - 1) >> 1;
715
716 if (heap [p]->at <= w->at)
717 break;
718
489 heap [k] = heap [k >> 1]; 719 heap [k] = heap [p];
490 ((W)heap [k])->active = k + 1; 720 ((W)heap [k])->active = k + 1;
491 k >>= 1; 721 k = p;
492 } 722 }
493 723
494 heap [k] = w; 724 heap [k] = w;
495 ((W)heap [k])->active = k + 1; 725 ((W)heap [k])->active = k + 1;
496
497} 726}
498 727
499static void 728void inline_speed
500downheap (WT *heap, int N, int k) 729downheap (WT *heap, int N, int k)
501{ 730{
502 WT w = heap [k]; 731 WT w = heap [k];
503 732
504 while (k < (N >> 1)) 733 for (;;)
505 { 734 {
506 int j = k << 1; 735 int c = (k << 1) + 1;
507 736
508 if (j + 1 < N && heap [j]->at > heap [j + 1]->at) 737 if (c >= N)
509 ++j;
510
511 if (w->at <= heap [j]->at)
512 break; 738 break;
513 739
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
514 heap [k] = heap [j]; 746 heap [k] = heap [c];
515 ((W)heap [k])->active = k + 1; 747 ((W)heap [k])->active = k + 1;
748
516 k = j; 749 k = c;
517 } 750 }
518 751
519 heap [k] = w; 752 heap [k] = w;
520 ((W)heap [k])->active = k + 1; 753 ((W)heap [k])->active = k + 1;
521} 754}
522 755
523inline void 756void inline_size
524adjustheap (WT *heap, int N, int k, ev_tstamp at) 757adjustheap (WT *heap, int N, int k)
525{ 758{
526 ev_tstamp old_at = heap [k]->at; 759 upheap (heap, k);
527 heap [k]->at = at;
528
529 if (old_at < at)
530 downheap (heap, N, k); 760 downheap (heap, N, k);
531 else
532 upheap (heap, k);
533} 761}
534 762
535/*****************************************************************************/ 763/*****************************************************************************/
536 764
537typedef struct 765typedef struct
538{ 766{
539 WL head; 767 WL head;
540 sig_atomic_t volatile gotsig; 768 EV_ATOMIC_T gotsig;
541} ANSIG; 769} ANSIG;
542 770
543static ANSIG *signals; 771static ANSIG *signals;
544static int signalmax; 772static int signalmax;
545 773
546static int sigpipe [2]; 774static EV_ATOMIC_T gotsig;
547static sig_atomic_t volatile gotsig;
548static struct ev_io sigev;
549 775
550static void 776void inline_size
551signals_init (ANSIG *base, int count) 777signals_init (ANSIG *base, int count)
552{ 778{
553 while (count--) 779 while (count--)
554 { 780 {
555 base->head = 0; 781 base->head = 0;
… …
557 783
558 ++base; 784 ++base;
559 } 785 }
560} 786}
561 787
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); /* 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; /* save errno becaue write might clobber it */
825
826 if (sig) gotsig = 1;
827 if (async) gotasync = 1;
828
829 write (evpipe [1], &old_errno, 1);
830
831 errno = old_errno;
832 }
833}
834
835static void
836pipecb (EV_P_ ev_io *iow, int revents)
837{
838 {
839 int dummy;
840 read (evpipe [0], &dummy, 1);
841 }
842
843 if (gotsig)
844 {
845 int signum;
846 gotsig = 0;
847
848 for (signum = signalmax; signum--; )
849 if (signals [signum].gotsig)
850 ev_feed_signal_event (EV_A_ signum + 1);
851 }
852
853#if EV_ASYNC_ENABLE
854 if (gotasync)
855 {
856 int i;
857 gotasync = 0;
858
859 for (i = asynccnt; i--; )
860 if (asyncs [i]->sent)
861 {
862 asyncs [i]->sent = 0;
863 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
864 }
865 }
866#endif
867}
868
869/*****************************************************************************/
870
562static void 871static void
563sighandler (int signum) 872sighandler (int signum)
564{ 873{
874#if EV_MULTIPLICITY
875 struct ev_loop *loop = &default_loop_struct;
876#endif
877
565#if WIN32 878#if _WIN32
566 signal (signum, sighandler); 879 signal (signum, sighandler);
567#endif 880#endif
568 881
569 signals [signum - 1].gotsig = 1; 882 signals [signum - 1].gotsig = 1;
570 883 evpipe_write (EV_A_ 1, 0);
571 if (!gotsig)
572 {
573 int old_errno = errno;
574 gotsig = 1;
575#ifdef WIN32
576 send (sigpipe [1], &signum, 1, MSG_DONTWAIT);
577#else
578 write (sigpipe [1], &signum, 1);
579#endif
580 errno = old_errno;
581 }
582} 884}
583 885
584void 886void noinline
585ev_feed_signal_event (EV_P_ int signum) 887ev_feed_signal_event (EV_P_ int signum)
586{ 888{
587 WL w; 889 WL w;
588 890
589#if EV_MULTIPLICITY 891#if EV_MULTIPLICITY
590 assert (("feeding signal events is only supported in the default loop", loop == default_loop)); 892 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
591#endif 893#endif
592 894
593 --signum; 895 --signum;
594 896
595 if (signum < 0 || signum >= signalmax) 897 if (signum < 0 || signum >= signalmax)
… …
599 901
600 for (w = signals [signum].head; w; w = w->next) 902 for (w = signals [signum].head; w; w = w->next)
601 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 903 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
602} 904}
603 905
604static void
605sigcb (EV_P_ struct ev_io *iow, int revents)
606{
607 int signum;
608
609#ifdef WIN32
610 recv (sigpipe [0], &revents, 1, MSG_DONTWAIT);
611#else
612 read (sigpipe [0], &revents, 1);
613#endif
614 gotsig = 0;
615
616 for (signum = signalmax; signum--; )
617 if (signals [signum].gotsig)
618 ev_feed_signal_event (EV_A_ signum + 1);
619}
620
621static void
622siginit (EV_P)
623{
624#ifndef WIN32
625 fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);
626 fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
627
628 /* rather than sort out wether we really need nb, set it */
629 fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
630 fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
631#endif
632
633 ev_io_set (&sigev, sigpipe [0], EV_READ);
634 ev_io_start (EV_A_ &sigev);
635 ev_unref (EV_A); /* child watcher should not keep loop alive */
636}
637
638/*****************************************************************************/ 906/*****************************************************************************/
639 907
640static struct ev_child *childs [PID_HASHSIZE]; 908static WL childs [EV_PID_HASHSIZE];
641 909
642#ifndef WIN32 910#ifndef _WIN32
643 911
644static struct ev_signal childev; 912static ev_signal childev;
913
914#ifndef WIFCONTINUED
915# define WIFCONTINUED(status) 0
916#endif
917
918void inline_speed
919child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
920{
921 ev_child *w;
922 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
923
924 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
925 {
926 if ((w->pid == pid || !w->pid)
927 && (!traced || (w->flags & 1)))
928 {
929 ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */
930 w->rpid = pid;
931 w->rstatus = status;
932 ev_feed_event (EV_A_ (W)w, EV_CHILD);
933 }
934 }
935}
645 936
646#ifndef WCONTINUED 937#ifndef WCONTINUED
647# define WCONTINUED 0 938# define WCONTINUED 0
648#endif 939#endif
649 940
650static void 941static void
651child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
652{
653 struct ev_child *w;
654
655 for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
656 if (w->pid == pid || !w->pid)
657 {
658 ev_priority (w) = ev_priority (sw); /* need to do it *now* */
659 w->rpid = pid;
660 w->rstatus = status;
661 ev_feed_event (EV_A_ (W)w, EV_CHILD);
662 }
663}
664
665static void
666childcb (EV_P_ struct ev_signal *sw, int revents) 942childcb (EV_P_ ev_signal *sw, int revents)
667{ 943{
668 int pid, status; 944 int pid, status;
669 945
946 /* some systems define WCONTINUED but then fail to support it (linux 2.4) */
670 if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) 947 if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
671 { 948 if (!WCONTINUED
949 || errno != EINVAL
950 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
951 return;
952
672 /* make sure we are called again until all childs have been reaped */ 953 /* make sure we are called again until all childs have been reaped */
954 /* we need to do it this way so that the callback gets called before we continue */
673 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 955 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
674 956
675 child_reap (EV_A_ sw, pid, pid, status); 957 child_reap (EV_A_ sw, pid, pid, status);
958 if (EV_PID_HASHSIZE > 1)
676 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */ 959 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
677 }
678} 960}
679 961
680#endif 962#endif
681 963
682/*****************************************************************************/ 964/*****************************************************************************/
683 965
966#if EV_USE_PORT
967# include "ev_port.c"
968#endif
684#if EV_USE_KQUEUE 969#if EV_USE_KQUEUE
685# include "ev_kqueue.c" 970# include "ev_kqueue.c"
686#endif 971#endif
687#if EV_USE_EPOLL 972#if EV_USE_EPOLL
688# include "ev_epoll.c" 973# include "ev_epoll.c"
… …
705{ 990{
706 return EV_VERSION_MINOR; 991 return EV_VERSION_MINOR;
707} 992}
708 993
709/* return true if we are running with elevated privileges and should ignore env variables */ 994/* return true if we are running with elevated privileges and should ignore env variables */
710static int 995int inline_size
711enable_secure (void) 996enable_secure (void)
712{ 997{
713#ifdef WIN32 998#ifdef _WIN32
714 return 0; 999 return 0;
715#else 1000#else
716 return getuid () != geteuid () 1001 return getuid () != geteuid ()
717 || getgid () != getegid (); 1002 || getgid () != getegid ();
718#endif 1003#endif
719} 1004}
720 1005
721int 1006unsigned int
722ev_method (EV_P) 1007ev_supported_backends (void)
723{ 1008{
724 return method; 1009 unsigned int flags = 0;
725}
726 1010
727static void 1011 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
728loop_init (EV_P_ int methods) 1012 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
1013 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
1014 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
1015 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1016
1017 return flags;
1018}
1019
1020unsigned int
1021ev_recommended_backends (void)
729{ 1022{
730 if (!method) 1023 unsigned int flags = ev_supported_backends ();
1024
1025#ifndef __NetBSD__
1026 /* kqueue is borked on everything but netbsd apparently */
1027 /* it usually doesn't work correctly on anything but sockets and pipes */
1028 flags &= ~EVBACKEND_KQUEUE;
1029#endif
1030#ifdef __APPLE__
1031 // flags &= ~EVBACKEND_KQUEUE; for documentation
1032 flags &= ~EVBACKEND_POLL;
1033#endif
1034
1035 return flags;
1036}
1037
1038unsigned int
1039ev_embeddable_backends (void)
1040{
1041 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1042
1043 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1044 /* please fix it and tell me how to detect the fix */
1045 flags &= ~EVBACKEND_EPOLL;
1046
1047 return flags;
1048}
1049
1050unsigned int
1051ev_backend (EV_P)
1052{
1053 return backend;
1054}
1055
1056unsigned int
1057ev_loop_count (EV_P)
1058{
1059 return loop_count;
1060}
1061
1062void
1063ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1064{
1065 io_blocktime = interval;
1066}
1067
1068void
1069ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1070{
1071 timeout_blocktime = interval;
1072}
1073
1074static void noinline
1075loop_init (EV_P_ unsigned int flags)
1076{
1077 if (!backend)
731 { 1078 {
732#if EV_USE_MONOTONIC 1079#if EV_USE_MONOTONIC
733 { 1080 {
734 struct timespec ts; 1081 struct timespec ts;
735 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1082 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
736 have_monotonic = 1; 1083 have_monotonic = 1;
737 } 1084 }
738#endif 1085#endif
739 1086
740 rt_now = ev_time (); 1087 ev_rt_now = ev_time ();
741 mn_now = get_clock (); 1088 mn_now = get_clock ();
742 now_floor = mn_now; 1089 now_floor = mn_now;
743 rtmn_diff = rt_now - mn_now; 1090 rtmn_diff = ev_rt_now - mn_now;
744 1091
745 if (methods == EVMETHOD_AUTO) 1092 io_blocktime = 0.;
746 if (!enable_secure () && getenv ("LIBEV_METHODS")) 1093 timeout_blocktime = 0.;
1094 backend = 0;
1095 backend_fd = -1;
1096 gotasync = 0;
1097#if EV_USE_INOTIFY
1098 fs_fd = -2;
1099#endif
1100
1101 /* pid check not overridable via env */
1102#ifndef _WIN32
1103 if (flags & EVFLAG_FORKCHECK)
1104 curpid = getpid ();
1105#endif
1106
1107 if (!(flags & EVFLAG_NOENV)
1108 && !enable_secure ()
1109 && getenv ("LIBEV_FLAGS"))
747 methods = atoi (getenv ("LIBEV_METHODS")); 1110 flags = atoi (getenv ("LIBEV_FLAGS"));
748 else
749 methods = EVMETHOD_ANY;
750 1111
751 method = 0; 1112 if (!(flags & 0x0000ffffUL))
752#if EV_USE_WIN32 1113 flags |= ev_recommended_backends ();
753 if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods); 1114
1115#if EV_USE_PORT
1116 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
754#endif 1117#endif
755#if EV_USE_KQUEUE 1118#if EV_USE_KQUEUE
756 if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods); 1119 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
757#endif 1120#endif
758#if EV_USE_EPOLL 1121#if EV_USE_EPOLL
759 if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods); 1122 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
760#endif 1123#endif
761#if EV_USE_POLL 1124#if EV_USE_POLL
762 if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods); 1125 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
763#endif 1126#endif
764#if EV_USE_SELECT 1127#if EV_USE_SELECT
765 if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods); 1128 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
766#endif 1129#endif
767 1130
768 ev_init (&sigev, sigcb); 1131 ev_init (&pipeev, pipecb);
769 ev_set_priority (&sigev, EV_MAXPRI); 1132 ev_set_priority (&pipeev, EV_MAXPRI);
770 } 1133 }
771} 1134}
772 1135
773void 1136static void noinline
774loop_destroy (EV_P) 1137loop_destroy (EV_P)
775{ 1138{
776 int i; 1139 int i;
777 1140
1141 if (ev_is_active (&pipeev))
1142 {
1143 ev_ref (EV_A); /* signal watcher */
1144 ev_io_stop (EV_A_ &pipeev);
1145
1146 close (evpipe [0]); evpipe [0] = 0;
1147 close (evpipe [1]); evpipe [1] = 0;
1148 }
1149
778#if EV_USE_WIN32 1150#if EV_USE_INOTIFY
779 if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A); 1151 if (fs_fd >= 0)
1152 close (fs_fd);
1153#endif
1154
1155 if (backend_fd >= 0)
1156 close (backend_fd);
1157
1158#if EV_USE_PORT
1159 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
780#endif 1160#endif
781#if EV_USE_KQUEUE 1161#if EV_USE_KQUEUE
782 if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A); 1162 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
783#endif 1163#endif
784#if EV_USE_EPOLL 1164#if EV_USE_EPOLL
785 if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A); 1165 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
786#endif 1166#endif
787#if EV_USE_POLL 1167#if EV_USE_POLL
788 if (method == EVMETHOD_POLL ) poll_destroy (EV_A); 1168 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
789#endif 1169#endif
790#if EV_USE_SELECT 1170#if EV_USE_SELECT
791 if (method == EVMETHOD_SELECT) select_destroy (EV_A); 1171 if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
792#endif 1172#endif
793 1173
794 for (i = NUMPRI; i--; ) 1174 for (i = NUMPRI; i--; )
1175 {
795 array_free (pending, [i]); 1176 array_free (pending, [i]);
1177#if EV_IDLE_ENABLE
1178 array_free (idle, [i]);
1179#endif
1180 }
1181
1182 ev_free (anfds); anfdmax = 0;
796 1183
797 /* have to use the microsoft-never-gets-it-right macro */ 1184 /* have to use the microsoft-never-gets-it-right macro */
798 array_free_microshit (fdchange); 1185 array_free (fdchange, EMPTY);
799 array_free_microshit (timer); 1186 array_free (timer, EMPTY);
800 array_free_microshit (periodic); 1187#if EV_PERIODIC_ENABLE
801 array_free_microshit (idle); 1188 array_free (periodic, EMPTY);
802 array_free_microshit (prepare); 1189#endif
803 array_free_microshit (check); 1190#if EV_FORK_ENABLE
1191 array_free (fork, EMPTY);
1192#endif
1193 array_free (prepare, EMPTY);
1194 array_free (check, EMPTY);
1195#if EV_ASYNC_ENABLE
1196 array_free (async, EMPTY);
1197#endif
804 1198
805 method = 0; 1199 backend = 0;
806} 1200}
807 1201
808static void 1202void inline_size infy_fork (EV_P);
1203
1204void inline_size
809loop_fork (EV_P) 1205loop_fork (EV_P)
810{ 1206{
1207#if EV_USE_PORT
1208 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1209#endif
1210#if EV_USE_KQUEUE
1211 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
1212#endif
811#if EV_USE_EPOLL 1213#if EV_USE_EPOLL
812 if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A); 1214 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
813#endif 1215#endif
814#if EV_USE_KQUEUE 1216#if EV_USE_INOTIFY
815 if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A); 1217 infy_fork (EV_A);
816#endif 1218#endif
817 1219
818 if (ev_is_active (&sigev)) 1220 if (ev_is_active (&pipeev))
819 { 1221 {
820 /* default loop */ 1222 /* this "locks" the handlers against writing to the pipe */
1223 gotsig = gotasync = 1;
821 1224
822 ev_ref (EV_A); 1225 ev_ref (EV_A);
823 ev_io_stop (EV_A_ &sigev); 1226 ev_io_stop (EV_A_ &pipeev);
824 close (sigpipe [0]); 1227 close (evpipe [0]);
825 close (sigpipe [1]); 1228 close (evpipe [1]);
826 1229
827 while (pipe (sigpipe))
828 syserr ("(libev) error creating pipe");
829
830 siginit (EV_A); 1230 evpipe_init (EV_A);
1231 /* now iterate over everything, in case we missed something */
1232 pipecb (EV_A_ &pipeev, EV_READ);
831 } 1233 }
832 1234
833 postfork = 0; 1235 postfork = 0;
834} 1236}
835 1237
836#if EV_MULTIPLICITY 1238#if EV_MULTIPLICITY
837struct ev_loop * 1239struct ev_loop *
838ev_loop_new (int methods) 1240ev_loop_new (unsigned int flags)
839{ 1241{
840 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 1242 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
841 1243
842 memset (loop, 0, sizeof (struct ev_loop)); 1244 memset (loop, 0, sizeof (struct ev_loop));
843 1245
844 loop_init (EV_A_ methods); 1246 loop_init (EV_A_ flags);
845 1247
846 if (ev_method (EV_A)) 1248 if (ev_backend (EV_A))
847 return loop; 1249 return loop;
848 1250
849 return 0; 1251 return 0;
850} 1252}
851 1253
… …
857} 1259}
858 1260
859void 1261void
860ev_loop_fork (EV_P) 1262ev_loop_fork (EV_P)
861{ 1263{
862 postfork = 1; 1264 postfork = 1; /* must be in line with ev_default_fork */
863} 1265}
864 1266
865#endif 1267#endif
866 1268
867#if EV_MULTIPLICITY 1269#if EV_MULTIPLICITY
868struct ev_loop * 1270struct ev_loop *
1271ev_default_loop_init (unsigned int flags)
869#else 1272#else
870int 1273int
1274ev_default_loop (unsigned int flags)
871#endif 1275#endif
872ev_default_loop (int methods)
873{ 1276{
874 if (sigpipe [0] == sigpipe [1])
875 if (pipe (sigpipe))
876 return 0;
877
878 if (!default_loop) 1277 if (!ev_default_loop_ptr)
879 { 1278 {
880#if EV_MULTIPLICITY 1279#if EV_MULTIPLICITY
881 struct ev_loop *loop = default_loop = &default_loop_struct; 1280 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
882#else 1281#else
883 default_loop = 1; 1282 ev_default_loop_ptr = 1;
884#endif 1283#endif
885 1284
886 loop_init (EV_A_ methods); 1285 loop_init (EV_A_ flags);
887 1286
888 if (ev_method (EV_A)) 1287 if (ev_backend (EV_A))
889 { 1288 {
890 siginit (EV_A);
891
892#ifndef WIN32 1289#ifndef _WIN32
893 ev_signal_init (&childev, childcb, SIGCHLD); 1290 ev_signal_init (&childev, childcb, SIGCHLD);
894 ev_set_priority (&childev, EV_MAXPRI); 1291 ev_set_priority (&childev, EV_MAXPRI);
895 ev_signal_start (EV_A_ &childev); 1292 ev_signal_start (EV_A_ &childev);
896 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1293 ev_unref (EV_A); /* child watcher should not keep loop alive */
897#endif 1294#endif
898 } 1295 }
899 else 1296 else
900 default_loop = 0; 1297 ev_default_loop_ptr = 0;
901 } 1298 }
902 1299
903 return default_loop; 1300 return ev_default_loop_ptr;
904} 1301}
905 1302
906void 1303void
907ev_default_destroy (void) 1304ev_default_destroy (void)
908{ 1305{
909#if EV_MULTIPLICITY 1306#if EV_MULTIPLICITY
910 struct ev_loop *loop = default_loop; 1307 struct ev_loop *loop = ev_default_loop_ptr;
911#endif 1308#endif
912 1309
913#ifndef WIN32 1310#ifndef _WIN32
914 ev_ref (EV_A); /* child watcher */ 1311 ev_ref (EV_A); /* child watcher */
915 ev_signal_stop (EV_A_ &childev); 1312 ev_signal_stop (EV_A_ &childev);
916#endif 1313#endif
917 1314
918 ev_ref (EV_A); /* signal watcher */
919 ev_io_stop (EV_A_ &sigev);
920
921 close (sigpipe [0]); sigpipe [0] = 0;
922 close (sigpipe [1]); sigpipe [1] = 0;
923
924 loop_destroy (EV_A); 1315 loop_destroy (EV_A);
925} 1316}
926 1317
927void 1318void
928ev_default_fork (void) 1319ev_default_fork (void)
929{ 1320{
930#if EV_MULTIPLICITY 1321#if EV_MULTIPLICITY
931 struct ev_loop *loop = default_loop; 1322 struct ev_loop *loop = ev_default_loop_ptr;
932#endif 1323#endif
933 1324
934 if (method) 1325 if (backend)
935 postfork = 1; 1326 postfork = 1; /* must be in line with ev_loop_fork */
936} 1327}
937 1328
938/*****************************************************************************/ 1329/*****************************************************************************/
939 1330
940static int 1331void
941any_pending (EV_P) 1332ev_invoke (EV_P_ void *w, int revents)
942{ 1333{
943 int pri; 1334 EV_CB_INVOKE ((W)w, revents);
944
945 for (pri = NUMPRI; pri--; )
946 if (pendingcnt [pri])
947 return 1;
948
949 return 0;
950} 1335}
951 1336
952static void 1337void inline_speed
953call_pending (EV_P) 1338call_pending (EV_P)
954{ 1339{
955 int pri; 1340 int pri;
956 1341
957 for (pri = NUMPRI; pri--; ) 1342 for (pri = NUMPRI; pri--; )
958 while (pendingcnt [pri]) 1343 while (pendingcnt [pri])
959 { 1344 {
960 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 1345 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
961 1346
962 if (p->w) 1347 if (expect_true (p->w))
963 { 1348 {
1349 /*assert (("non-pending watcher on pending list", p->w->pending));*/
1350
964 p->w->pending = 0; 1351 p->w->pending = 0;
965 EV_CB_INVOKE (p->w, p->events); 1352 EV_CB_INVOKE (p->w, p->events);
966 } 1353 }
967 } 1354 }
968} 1355}
969 1356
970static void 1357void inline_size
971timers_reify (EV_P) 1358timers_reify (EV_P)
972{ 1359{
973 while (timercnt && ((WT)timers [0])->at <= mn_now) 1360 while (timercnt && ((WT)timers [0])->at <= mn_now)
974 { 1361 {
975 struct ev_timer *w = timers [0]; 1362 ev_timer *w = (ev_timer *)timers [0];
976 1363
977 assert (("inactive timer on timer heap detected", ev_is_active (w))); 1364 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
978 1365
979 /* first reschedule or stop timer */ 1366 /* first reschedule or stop timer */
980 if (w->repeat) 1367 if (w->repeat)
981 { 1368 {
982 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 1369 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1370
983 ((WT)w)->at = mn_now + w->repeat; 1371 ((WT)w)->at += w->repeat;
1372 if (((WT)w)->at < mn_now)
1373 ((WT)w)->at = mn_now;
1374
984 downheap ((WT *)timers, timercnt, 0); 1375 downheap (timers, timercnt, 0);
985 } 1376 }
986 else 1377 else
987 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ 1378 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
988 1379
989 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); 1380 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
990 } 1381 }
991} 1382}
992 1383
993static void 1384#if EV_PERIODIC_ENABLE
1385void inline_size
994periodics_reify (EV_P) 1386periodics_reify (EV_P)
995{ 1387{
996 while (periodiccnt && ((WT)periodics [0])->at <= rt_now) 1388 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
997 { 1389 {
998 struct ev_periodic *w = periodics [0]; 1390 ev_periodic *w = (ev_periodic *)periodics [0];
999 1391
1000 assert (("inactive timer on periodic heap detected", ev_is_active (w))); 1392 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1001 1393
1002 /* first reschedule or stop timer */ 1394 /* first reschedule or stop timer */
1003 if (w->reschedule_cb) 1395 if (w->reschedule_cb)
1004 { 1396 {
1005 ev_tstamp at = ((WT)w)->at = w->reschedule_cb (w, rt_now + 0.0001); 1397 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1006
1007 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > rt_now)); 1398 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1008 downheap ((WT *)periodics, periodiccnt, 0); 1399 downheap (periodics, periodiccnt, 0);
1009 } 1400 }
1010 else if (w->interval) 1401 else if (w->interval)
1011 { 1402 {
1012 ((WT)w)->at += floor ((rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval; 1403 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1404 if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
1013 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > rt_now)); 1405 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1014 downheap ((WT *)periodics, periodiccnt, 0); 1406 downheap (periodics, periodiccnt, 0);
1015 } 1407 }
1016 else 1408 else
1017 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 1409 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1018 1410
1019 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 1411 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1020 } 1412 }
1021} 1413}
1022 1414
1023static void 1415static void noinline
1024periodics_reschedule (EV_P) 1416periodics_reschedule (EV_P)
1025{ 1417{
1026 int i; 1418 int i;
1027 1419
1028 /* adjust periodics after time jump */ 1420 /* adjust periodics after time jump */
1029 for (i = 0; i < periodiccnt; ++i) 1421 for (i = 0; i < periodiccnt; ++i)
1030 { 1422 {
1031 struct ev_periodic *w = periodics [i]; 1423 ev_periodic *w = (ev_periodic *)periodics [i];
1032 1424
1033 if (w->reschedule_cb) 1425 if (w->reschedule_cb)
1034 ((WT)w)->at = w->reschedule_cb (w, rt_now); 1426 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1035 else if (w->interval) 1427 else if (w->interval)
1036 ((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval; 1428 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1037 } 1429 }
1038 1430
1039 /* now rebuild the heap */ 1431 /* now rebuild the heap */
1040 for (i = periodiccnt >> 1; i--; ) 1432 for (i = periodiccnt >> 1; i--; )
1041 downheap ((WT *)periodics, periodiccnt, i); 1433 downheap (periodics, periodiccnt, i);
1042} 1434}
1435#endif
1043 1436
1044inline int 1437#if EV_IDLE_ENABLE
1045time_update_monotonic (EV_P) 1438void inline_size
1439idle_reify (EV_P)
1046{ 1440{
1047 mn_now = get_clock (); 1441 if (expect_false (idleall))
1048
1049 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1050 {
1051 rt_now = rtmn_diff + mn_now;
1052 return 0;
1053 } 1442 {
1054 else 1443 int pri;
1444
1445 for (pri = NUMPRI; pri--; )
1446 {
1447 if (pendingcnt [pri])
1448 break;
1449
1450 if (idlecnt [pri])
1451 {
1452 queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
1453 break;
1454 }
1455 }
1055 { 1456 }
1056 now_floor = mn_now;
1057 rt_now = ev_time ();
1058 return 1;
1059 }
1060} 1457}
1458#endif
1061 1459
1062static void 1460void inline_speed
1063time_update (EV_P) 1461time_update (EV_P_ ev_tstamp max_block)
1064{ 1462{
1065 int i; 1463 int i;
1066 1464
1067#if EV_USE_MONOTONIC 1465#if EV_USE_MONOTONIC
1068 if (expect_true (have_monotonic)) 1466 if (expect_true (have_monotonic))
1069 { 1467 {
1070 if (time_update_monotonic (EV_A)) 1468 ev_tstamp odiff = rtmn_diff;
1469
1470 mn_now = get_clock ();
1471
1472 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
1473 /* interpolate in the meantime */
1474 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1071 { 1475 {
1072 ev_tstamp odiff = rtmn_diff; 1476 ev_rt_now = rtmn_diff + mn_now;
1477 return;
1478 }
1073 1479
1480 now_floor = mn_now;
1481 ev_rt_now = ev_time ();
1482
1074 for (i = 4; --i; ) /* loop a few times, before making important decisions */ 1483 /* loop a few times, before making important decisions.
1484 * on the choice of "4": one iteration isn't enough,
1485 * in case we get preempted during the calls to
1486 * ev_time and get_clock. a second call is almost guaranteed
1487 * to succeed in that case, though. and looping a few more times
1488 * doesn't hurt either as we only do this on time-jumps or
1489 * in the unlikely event of having been preempted here.
1490 */
1491 for (i = 4; --i; )
1075 { 1492 {
1076 rtmn_diff = rt_now - mn_now; 1493 rtmn_diff = ev_rt_now - mn_now;
1077 1494
1078 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) 1495 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1079 return; /* all is well */ 1496 return; /* all is well */
1080 1497
1081 rt_now = ev_time (); 1498 ev_rt_now = ev_time ();
1082 mn_now = get_clock (); 1499 mn_now = get_clock ();
1083 now_floor = mn_now; 1500 now_floor = mn_now;
1084 } 1501 }
1085 1502
1503# if EV_PERIODIC_ENABLE
1504 periodics_reschedule (EV_A);
1505# endif
1506 /* no timer adjustment, as the monotonic clock doesn't jump */
1507 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1508 }
1509 else
1510#endif
1511 {
1512 ev_rt_now = ev_time ();
1513
1514 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1515 {
1516#if EV_PERIODIC_ENABLE
1086 periodics_reschedule (EV_A); 1517 periodics_reschedule (EV_A);
1087 /* no timer adjustment, as the monotonic clock doesn't jump */ 1518#endif
1088 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */ 1519 /* adjust timers. this is easy, as the offset is the same for all of them */
1520 for (i = 0; i < timercnt; ++i)
1521 ((WT)timers [i])->at += ev_rt_now - mn_now;
1089 } 1522 }
1090 }
1091 else
1092#endif
1093 {
1094 rt_now = ev_time ();
1095 1523
1096 if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
1097 {
1098 periodics_reschedule (EV_A);
1099
1100 /* adjust timers. this is easy, as the offset is the same for all */
1101 for (i = 0; i < timercnt; ++i)
1102 ((WT)timers [i])->at += rt_now - mn_now;
1103 }
1104
1105 mn_now = rt_now; 1524 mn_now = ev_rt_now;
1106 } 1525 }
1107} 1526}
1108 1527
1109void 1528void
1110ev_ref (EV_P) 1529ev_ref (EV_P)
… …
1121static int loop_done; 1540static int loop_done;
1122 1541
1123void 1542void
1124ev_loop (EV_P_ int flags) 1543ev_loop (EV_P_ int flags)
1125{ 1544{
1126 double block;
1127 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0; 1545 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
1546 ? EVUNLOOP_ONE
1547 : EVUNLOOP_CANCEL;
1548
1549 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
1128 1550
1129 do 1551 do
1130 { 1552 {
1553#ifndef _WIN32
1554 if (expect_false (curpid)) /* penalise the forking check even more */
1555 if (expect_false (getpid () != curpid))
1556 {
1557 curpid = getpid ();
1558 postfork = 1;
1559 }
1560#endif
1561
1562#if EV_FORK_ENABLE
1563 /* we might have forked, so queue fork handlers */
1564 if (expect_false (postfork))
1565 if (forkcnt)
1566 {
1567 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1568 call_pending (EV_A);
1569 }
1570#endif
1571
1131 /* queue check watchers (and execute them) */ 1572 /* queue prepare watchers (and execute them) */
1132 if (expect_false (preparecnt)) 1573 if (expect_false (preparecnt))
1133 { 1574 {
1134 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 1575 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1135 call_pending (EV_A); 1576 call_pending (EV_A);
1136 } 1577 }
1137 1578
1579 if (expect_false (!activecnt))
1580 break;
1581
1138 /* we might have forked, so reify kernel state if necessary */ 1582 /* we might have forked, so reify kernel state if necessary */
1139 if (expect_false (postfork)) 1583 if (expect_false (postfork))
1140 loop_fork (EV_A); 1584 loop_fork (EV_A);
1141 1585
1142 /* update fd-related kernel structures */ 1586 /* update fd-related kernel structures */
1143 fd_reify (EV_A); 1587 fd_reify (EV_A);
1144 1588
1145 /* calculate blocking time */ 1589 /* calculate blocking time */
1590 {
1591 ev_tstamp waittime = 0.;
1592 ev_tstamp sleeptime = 0.;
1146 1593
1147 /* we only need this for !monotonic clock or timers, but as we basically 1594 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1148 always have timers, we just calculate it always */
1149#if EV_USE_MONOTONIC
1150 if (expect_true (have_monotonic))
1151 time_update_monotonic (EV_A);
1152 else
1153#endif
1154 { 1595 {
1155 rt_now = ev_time (); 1596 /* update time to cancel out callback processing overhead */
1156 mn_now = rt_now; 1597 time_update (EV_A_ 1e100);
1157 }
1158 1598
1159 if (flags & EVLOOP_NONBLOCK || idlecnt)
1160 block = 0.;
1161 else
1162 {
1163 block = MAX_BLOCKTIME; 1599 waittime = MAX_BLOCKTIME;
1164 1600
1165 if (timercnt) 1601 if (timercnt)
1166 { 1602 {
1167 ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge; 1603 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1168 if (block > to) block = to; 1604 if (waittime > to) waittime = to;
1169 } 1605 }
1170 1606
1607#if EV_PERIODIC_ENABLE
1171 if (periodiccnt) 1608 if (periodiccnt)
1172 { 1609 {
1173 ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge; 1610 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1174 if (block > to) block = to; 1611 if (waittime > to) waittime = to;
1175 } 1612 }
1613#endif
1176 1614
1177 if (block < 0.) block = 0.; 1615 if (expect_false (waittime < timeout_blocktime))
1616 waittime = timeout_blocktime;
1617
1618 sleeptime = waittime - backend_fudge;
1619
1620 if (expect_true (sleeptime > io_blocktime))
1621 sleeptime = io_blocktime;
1622
1623 if (sleeptime)
1624 {
1625 ev_sleep (sleeptime);
1626 waittime -= sleeptime;
1627 }
1178 } 1628 }
1179 1629
1180 method_poll (EV_A_ block); 1630 ++loop_count;
1631 backend_poll (EV_A_ waittime);
1181 1632
1182 /* update rt_now, do magic */ 1633 /* update ev_rt_now, do magic */
1183 time_update (EV_A); 1634 time_update (EV_A_ waittime + sleeptime);
1635 }
1184 1636
1185 /* queue pending timers and reschedule them */ 1637 /* queue pending timers and reschedule them */
1186 timers_reify (EV_A); /* relative timers called last */ 1638 timers_reify (EV_A); /* relative timers called last */
1639#if EV_PERIODIC_ENABLE
1187 periodics_reify (EV_A); /* absolute timers called first */ 1640 periodics_reify (EV_A); /* absolute timers called first */
1641#endif
1188 1642
1643#if EV_IDLE_ENABLE
1189 /* queue idle watchers unless io or timers are pending */ 1644 /* queue idle watchers unless other events are pending */
1190 if (idlecnt && !any_pending (EV_A)) 1645 idle_reify (EV_A);
1191 queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); 1646#endif
1192 1647
1193 /* queue check watchers, to be executed first */ 1648 /* queue check watchers, to be executed first */
1194 if (checkcnt) 1649 if (expect_false (checkcnt))
1195 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 1650 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1196 1651
1197 call_pending (EV_A); 1652 call_pending (EV_A);
1653
1198 } 1654 }
1199 while (activecnt && !loop_done); 1655 while (expect_true (activecnt && !loop_done));
1200 1656
1201 if (loop_done != 2) 1657 if (loop_done == EVUNLOOP_ONE)
1202 loop_done = 0; 1658 loop_done = EVUNLOOP_CANCEL;
1203} 1659}
1204 1660
1205void 1661void
1206ev_unloop (EV_P_ int how) 1662ev_unloop (EV_P_ int how)
1207{ 1663{
1208 loop_done = how; 1664 loop_done = how;
1209} 1665}
1210 1666
1211/*****************************************************************************/ 1667/*****************************************************************************/
1212 1668
1213inline void 1669void inline_size
1214wlist_add (WL *head, WL elem) 1670wlist_add (WL *head, WL elem)
1215{ 1671{
1216 elem->next = *head; 1672 elem->next = *head;
1217 *head = elem; 1673 *head = elem;
1218} 1674}
1219 1675
1220inline void 1676void inline_size
1221wlist_del (WL *head, WL elem) 1677wlist_del (WL *head, WL elem)
1222{ 1678{
1223 while (*head) 1679 while (*head)
1224 { 1680 {
1225 if (*head == elem) 1681 if (*head == elem)
… …
1230 1686
1231 head = &(*head)->next; 1687 head = &(*head)->next;
1232 } 1688 }
1233} 1689}
1234 1690
1235inline void 1691void inline_speed
1236ev_clear_pending (EV_P_ W w) 1692clear_pending (EV_P_ W w)
1237{ 1693{
1238 if (w->pending) 1694 if (w->pending)
1239 { 1695 {
1240 pendings [ABSPRI (w)][w->pending - 1].w = 0; 1696 pendings [ABSPRI (w)][w->pending - 1].w = 0;
1241 w->pending = 0; 1697 w->pending = 0;
1242 } 1698 }
1243} 1699}
1244 1700
1245inline void 1701int
1702ev_clear_pending (EV_P_ void *w)
1703{
1704 W w_ = (W)w;
1705 int pending = w_->pending;
1706
1707 if (expect_true (pending))
1708 {
1709 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
1710 w_->pending = 0;
1711 p->w = 0;
1712 return p->events;
1713 }
1714 else
1715 return 0;
1716}
1717
1718void inline_size
1719pri_adjust (EV_P_ W w)
1720{
1721 int pri = w->priority;
1722 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1723 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1724 w->priority = pri;
1725}
1726
1727void inline_speed
1246ev_start (EV_P_ W w, int active) 1728ev_start (EV_P_ W w, int active)
1247{ 1729{
1248 if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; 1730 pri_adjust (EV_A_ w);
1249 if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1250
1251 w->active = active; 1731 w->active = active;
1252 ev_ref (EV_A); 1732 ev_ref (EV_A);
1253} 1733}
1254 1734
1255inline void 1735void inline_size
1256ev_stop (EV_P_ W w) 1736ev_stop (EV_P_ W w)
1257{ 1737{
1258 ev_unref (EV_A); 1738 ev_unref (EV_A);
1259 w->active = 0; 1739 w->active = 0;
1260} 1740}
1261 1741
1262/*****************************************************************************/ 1742/*****************************************************************************/
1263 1743
1264void 1744void noinline
1265ev_io_start (EV_P_ struct ev_io *w) 1745ev_io_start (EV_P_ ev_io *w)
1266{ 1746{
1267 int fd = w->fd; 1747 int fd = w->fd;
1268 1748
1269 if (ev_is_active (w)) 1749 if (expect_false (ev_is_active (w)))
1270 return; 1750 return;
1271 1751
1272 assert (("ev_io_start called with negative fd", fd >= 0)); 1752 assert (("ev_io_start called with negative fd", fd >= 0));
1273 1753
1274 ev_start (EV_A_ (W)w, 1); 1754 ev_start (EV_A_ (W)w, 1);
1275 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 1755 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1276 wlist_add ((WL *)&anfds[fd].head, (WL)w); 1756 wlist_add (&anfds[fd].head, (WL)w);
1277 1757
1278 fd_change (EV_A_ fd); 1758 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);
1759 w->events &= ~EV_IOFDSET;
1279} 1760}
1280 1761
1281void 1762void noinline
1282ev_io_stop (EV_P_ struct ev_io *w) 1763ev_io_stop (EV_P_ ev_io *w)
1283{ 1764{
1284 ev_clear_pending (EV_A_ (W)w); 1765 clear_pending (EV_A_ (W)w);
1285 if (!ev_is_active (w)) 1766 if (expect_false (!ev_is_active (w)))
1286 return; 1767 return;
1287 1768
1769 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1770
1288 wlist_del ((WL *)&anfds[w->fd].head, (WL)w); 1771 wlist_del (&anfds[w->fd].head, (WL)w);
1289 ev_stop (EV_A_ (W)w); 1772 ev_stop (EV_A_ (W)w);
1290 1773
1291 fd_change (EV_A_ w->fd); 1774 fd_change (EV_A_ w->fd, 1);
1292} 1775}
1293 1776
1294void 1777void noinline
1295ev_timer_start (EV_P_ struct ev_timer *w) 1778ev_timer_start (EV_P_ ev_timer *w)
1779{
1780 if (expect_false (ev_is_active (w)))
1781 return;
1782
1783 ((WT)w)->at += mn_now;
1784
1785 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1786
1787 ev_start (EV_A_ (W)w, ++timercnt);
1788 array_needsize (WT, timers, timermax, timercnt, EMPTY2);
1789 timers [timercnt - 1] = (WT)w;
1790 upheap (timers, timercnt - 1);
1791
1792 /*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
1793}
1794
1795void noinline
1796ev_timer_stop (EV_P_ ev_timer *w)
1797{
1798 clear_pending (EV_A_ (W)w);
1799 if (expect_false (!ev_is_active (w)))
1800 return;
1801
1802 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w));
1803
1804 {
1805 int active = ((W)w)->active;
1806
1807 if (expect_true (--active < --timercnt))
1808 {
1809 timers [active] = timers [timercnt];
1810 adjustheap (timers, timercnt, active);
1811 }
1812 }
1813
1814 ((WT)w)->at -= mn_now;
1815
1816 ev_stop (EV_A_ (W)w);
1817}
1818
1819void noinline
1820ev_timer_again (EV_P_ ev_timer *w)
1296{ 1821{
1297 if (ev_is_active (w)) 1822 if (ev_is_active (w))
1298 return;
1299
1300 ((WT)w)->at += mn_now;
1301
1302 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1303
1304 ev_start (EV_A_ (W)w, ++timercnt);
1305 array_needsize (struct ev_timer *, timers, timermax, timercnt, (void));
1306 timers [timercnt - 1] = w;
1307 upheap ((WT *)timers, timercnt - 1);
1308
1309 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1310}
1311
1312void
1313ev_timer_stop (EV_P_ struct ev_timer *w)
1314{
1315 ev_clear_pending (EV_A_ (W)w);
1316 if (!ev_is_active (w))
1317 return;
1318
1319 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1320
1321 if (((W)w)->active < timercnt--)
1322 {
1323 timers [((W)w)->active - 1] = timers [timercnt];
1324 downheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1325 }
1326
1327 ((WT)w)->at = w->repeat;
1328
1329 ev_stop (EV_A_ (W)w);
1330}
1331
1332void
1333ev_timer_again (EV_P_ struct ev_timer *w)
1334{
1335 if (ev_is_active (w))
1336 { 1823 {
1337 if (w->repeat) 1824 if (w->repeat)
1825 {
1826 ((WT)w)->at = mn_now + w->repeat;
1338 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1, mn_now + w->repeat); 1827 adjustheap (timers, timercnt, ((W)w)->active - 1);
1828 }
1339 else 1829 else
1340 ev_timer_stop (EV_A_ w); 1830 ev_timer_stop (EV_A_ w);
1341 } 1831 }
1342 else if (w->repeat) 1832 else if (w->repeat)
1833 {
1834 w->at = w->repeat;
1343 ev_timer_start (EV_A_ w); 1835 ev_timer_start (EV_A_ w);
1836 }
1344} 1837}
1345 1838
1346void 1839#if EV_PERIODIC_ENABLE
1840void noinline
1347ev_periodic_start (EV_P_ struct ev_periodic *w) 1841ev_periodic_start (EV_P_ ev_periodic *w)
1348{ 1842{
1349 if (ev_is_active (w)) 1843 if (expect_false (ev_is_active (w)))
1350 return; 1844 return;
1351 1845
1352 if (w->reschedule_cb) 1846 if (w->reschedule_cb)
1353 ((WT)w)->at = w->reschedule_cb (w, rt_now); 1847 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1354 else if (w->interval) 1848 else if (w->interval)
1355 { 1849 {
1356 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 1850 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1357 /* this formula differs from the one in periodic_reify because we do not always round up */ 1851 /* this formula differs from the one in periodic_reify because we do not always round up */
1358 ((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval; 1852 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1359 } 1853 }
1854 else
1855 ((WT)w)->at = w->offset;
1360 1856
1361 ev_start (EV_A_ (W)w, ++periodiccnt); 1857 ev_start (EV_A_ (W)w, ++periodiccnt);
1362 array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void)); 1858 array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2);
1363 periodics [periodiccnt - 1] = w; 1859 periodics [periodiccnt - 1] = (WT)w;
1364 upheap ((WT *)periodics, periodiccnt - 1); 1860 upheap (periodics, periodiccnt - 1);
1365 1861
1366 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1862 /*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
1367} 1863}
1368 1864
1369void 1865void noinline
1370ev_periodic_stop (EV_P_ struct ev_periodic *w) 1866ev_periodic_stop (EV_P_ ev_periodic *w)
1371{ 1867{
1372 ev_clear_pending (EV_A_ (W)w); 1868 clear_pending (EV_A_ (W)w);
1373 if (!ev_is_active (w)) 1869 if (expect_false (!ev_is_active (w)))
1374 return; 1870 return;
1375 1871
1376 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1872 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w));
1377 1873
1378 if (((W)w)->active < periodiccnt--) 1874 {
1875 int active = ((W)w)->active;
1876
1877 if (expect_true (--active < --periodiccnt))
1379 { 1878 {
1380 periodics [((W)w)->active - 1] = periodics [periodiccnt]; 1879 periodics [active] = periodics [periodiccnt];
1381 downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1); 1880 adjustheap (periodics, periodiccnt, active);
1382 } 1881 }
1882 }
1383 1883
1384 ev_stop (EV_A_ (W)w); 1884 ev_stop (EV_A_ (W)w);
1385} 1885}
1386 1886
1387void 1887void noinline
1388ev_periodic_again (EV_P_ struct ev_periodic *w) 1888ev_periodic_again (EV_P_ ev_periodic *w)
1389{ 1889{
1390 /* TODO: use adjustheap and recalculation */ 1890 /* TODO: use adjustheap and recalculation */
1391 ev_periodic_stop (EV_A_ w); 1891 ev_periodic_stop (EV_A_ w);
1392 ev_periodic_start (EV_A_ w); 1892 ev_periodic_start (EV_A_ w);
1393} 1893}
1394 1894#endif
1395void
1396ev_idle_start (EV_P_ struct ev_idle *w)
1397{
1398 if (ev_is_active (w))
1399 return;
1400
1401 ev_start (EV_A_ (W)w, ++idlecnt);
1402 array_needsize (struct ev_idle *, idles, idlemax, idlecnt, (void));
1403 idles [idlecnt - 1] = w;
1404}
1405
1406void
1407ev_idle_stop (EV_P_ struct ev_idle *w)
1408{
1409 ev_clear_pending (EV_A_ (W)w);
1410 if (ev_is_active (w))
1411 return;
1412
1413 idles [((W)w)->active - 1] = idles [--idlecnt];
1414 ev_stop (EV_A_ (W)w);
1415}
1416
1417void
1418ev_prepare_start (EV_P_ struct ev_prepare *w)
1419{
1420 if (ev_is_active (w))
1421 return;
1422
1423 ev_start (EV_A_ (W)w, ++preparecnt);
1424 array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, (void));
1425 prepares [preparecnt - 1] = w;
1426}
1427
1428void
1429ev_prepare_stop (EV_P_ struct ev_prepare *w)
1430{
1431 ev_clear_pending (EV_A_ (W)w);
1432 if (ev_is_active (w))
1433 return;
1434
1435 prepares [((W)w)->active - 1] = prepares [--preparecnt];
1436 ev_stop (EV_A_ (W)w);
1437}
1438
1439void
1440ev_check_start (EV_P_ struct ev_check *w)
1441{
1442 if (ev_is_active (w))
1443 return;
1444
1445 ev_start (EV_A_ (W)w, ++checkcnt);
1446 array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void));
1447 checks [checkcnt - 1] = w;
1448}
1449
1450void
1451ev_check_stop (EV_P_ struct ev_check *w)
1452{
1453 ev_clear_pending (EV_A_ (W)w);
1454 if (ev_is_active (w))
1455 return;
1456
1457 checks [((W)w)->active - 1] = checks [--checkcnt];
1458 ev_stop (EV_A_ (W)w);
1459}
1460 1895
1461#ifndef SA_RESTART 1896#ifndef SA_RESTART
1462# define SA_RESTART 0 1897# define SA_RESTART 0
1463#endif 1898#endif
1464 1899
1465void 1900void noinline
1466ev_signal_start (EV_P_ struct ev_signal *w) 1901ev_signal_start (EV_P_ ev_signal *w)
1467{ 1902{
1468#if EV_MULTIPLICITY 1903#if EV_MULTIPLICITY
1469 assert (("signal watchers are only supported in the default loop", loop == default_loop)); 1904 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1470#endif 1905#endif
1471 if (ev_is_active (w)) 1906 if (expect_false (ev_is_active (w)))
1472 return; 1907 return;
1473 1908
1474 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 1909 assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1475 1910
1911 evpipe_init (EV_A);
1912
1913 {
1914#ifndef _WIN32
1915 sigset_t full, prev;
1916 sigfillset (&full);
1917 sigprocmask (SIG_SETMASK, &full, &prev);
1918#endif
1919
1920 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1921
1922#ifndef _WIN32
1923 sigprocmask (SIG_SETMASK, &prev, 0);
1924#endif
1925 }
1926
1476 ev_start (EV_A_ (W)w, 1); 1927 ev_start (EV_A_ (W)w, 1);
1477 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1478 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); 1928 wlist_add (&signals [w->signum - 1].head, (WL)w);
1479 1929
1480 if (!((WL)w)->next) 1930 if (!((WL)w)->next)
1481 { 1931 {
1482#if WIN32 1932#if _WIN32
1483 signal (w->signum, sighandler); 1933 signal (w->signum, sighandler);
1484#else 1934#else
1485 struct sigaction sa; 1935 struct sigaction sa;
1486 sa.sa_handler = sighandler; 1936 sa.sa_handler = sighandler;
1487 sigfillset (&sa.sa_mask); 1937 sigfillset (&sa.sa_mask);
… …
1489 sigaction (w->signum, &sa, 0); 1939 sigaction (w->signum, &sa, 0);
1490#endif 1940#endif
1491 } 1941 }
1492} 1942}
1493 1943
1494void 1944void noinline
1495ev_signal_stop (EV_P_ struct ev_signal *w) 1945ev_signal_stop (EV_P_ ev_signal *w)
1496{ 1946{
1497 ev_clear_pending (EV_A_ (W)w); 1947 clear_pending (EV_A_ (W)w);
1498 if (!ev_is_active (w)) 1948 if (expect_false (!ev_is_active (w)))
1499 return; 1949 return;
1500 1950
1501 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); 1951 wlist_del (&signals [w->signum - 1].head, (WL)w);
1502 ev_stop (EV_A_ (W)w); 1952 ev_stop (EV_A_ (W)w);
1503 1953
1504 if (!signals [w->signum - 1].head) 1954 if (!signals [w->signum - 1].head)
1505 signal (w->signum, SIG_DFL); 1955 signal (w->signum, SIG_DFL);
1506} 1956}
1507 1957
1508void 1958void
1509ev_child_start (EV_P_ struct ev_child *w) 1959ev_child_start (EV_P_ ev_child *w)
1510{ 1960{
1511#if EV_MULTIPLICITY 1961#if EV_MULTIPLICITY
1512 assert (("child watchers are only supported in the default loop", loop == default_loop)); 1962 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1513#endif 1963#endif
1514 if (ev_is_active (w)) 1964 if (expect_false (ev_is_active (w)))
1515 return; 1965 return;
1516 1966
1517 ev_start (EV_A_ (W)w, 1); 1967 ev_start (EV_A_ (W)w, 1);
1518 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1968 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1519} 1969}
1520 1970
1521void 1971void
1522ev_child_stop (EV_P_ struct ev_child *w) 1972ev_child_stop (EV_P_ ev_child *w)
1523{ 1973{
1524 ev_clear_pending (EV_A_ (W)w); 1974 clear_pending (EV_A_ (W)w);
1525 if (ev_is_active (w)) 1975 if (expect_false (!ev_is_active (w)))
1526 return; 1976 return;
1527 1977
1528 wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1978 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1529 ev_stop (EV_A_ (W)w); 1979 ev_stop (EV_A_ (W)w);
1530} 1980}
1531 1981
1982#if EV_STAT_ENABLE
1983
1984# ifdef _WIN32
1985# undef lstat
1986# define lstat(a,b) _stati64 (a,b)
1987# endif
1988
1989#define DEF_STAT_INTERVAL 5.0074891
1990#define MIN_STAT_INTERVAL 0.1074891
1991
1992static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
1993
1994#if EV_USE_INOTIFY
1995# define EV_INOTIFY_BUFSIZE 8192
1996
1997static void noinline
1998infy_add (EV_P_ ev_stat *w)
1999{
2000 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);
2001
2002 if (w->wd < 0)
2003 {
2004 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2005
2006 /* monitor some parent directory for speedup hints */
2007 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2008 {
2009 char path [4096];
2010 strcpy (path, w->path);
2011
2012 do
2013 {
2014 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2015 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2016
2017 char *pend = strrchr (path, '/');
2018
2019 if (!pend)
2020 break; /* whoops, no '/', complain to your admin */
2021
2022 *pend = 0;
2023 w->wd = inotify_add_watch (fs_fd, path, mask);
2024 }
2025 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2026 }
2027 }
2028 else
2029 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2030
2031 if (w->wd >= 0)
2032 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2033}
2034
2035static void noinline
2036infy_del (EV_P_ ev_stat *w)
2037{
2038 int slot;
2039 int wd = w->wd;
2040
2041 if (wd < 0)
2042 return;
2043
2044 w->wd = -2;
2045 slot = wd & (EV_INOTIFY_HASHSIZE - 1);
2046 wlist_del (&fs_hash [slot].head, (WL)w);
2047
2048 /* remove this watcher, if others are watching it, they will rearm */
2049 inotify_rm_watch (fs_fd, wd);
2050}
2051
2052static void noinline
2053infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2054{
2055 if (slot < 0)
2056 /* overflow, need to check for all hahs slots */
2057 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2058 infy_wd (EV_A_ slot, wd, ev);
2059 else
2060 {
2061 WL w_;
2062
2063 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
2064 {
2065 ev_stat *w = (ev_stat *)w_;
2066 w_ = w_->next; /* lets us remove this watcher and all before it */
2067
2068 if (w->wd == wd || wd == -1)
2069 {
2070 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2071 {
2072 w->wd = -1;
2073 infy_add (EV_A_ w); /* re-add, no matter what */
2074 }
2075
2076 stat_timer_cb (EV_A_ &w->timer, 0);
2077 }
2078 }
2079 }
2080}
2081
2082static void
2083infy_cb (EV_P_ ev_io *w, int revents)
2084{
2085 char buf [EV_INOTIFY_BUFSIZE];
2086 struct inotify_event *ev = (struct inotify_event *)buf;
2087 int ofs;
2088 int len = read (fs_fd, buf, sizeof (buf));
2089
2090 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
2091 infy_wd (EV_A_ ev->wd, ev->wd, ev);
2092}
2093
2094void inline_size
2095infy_init (EV_P)
2096{
2097 if (fs_fd != -2)
2098 return;
2099
2100 fs_fd = inotify_init ();
2101
2102 if (fs_fd >= 0)
2103 {
2104 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2105 ev_set_priority (&fs_w, EV_MAXPRI);
2106 ev_io_start (EV_A_ &fs_w);
2107 }
2108}
2109
2110void inline_size
2111infy_fork (EV_P)
2112{
2113 int slot;
2114
2115 if (fs_fd < 0)
2116 return;
2117
2118 close (fs_fd);
2119 fs_fd = inotify_init ();
2120
2121 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2122 {
2123 WL w_ = fs_hash [slot].head;
2124 fs_hash [slot].head = 0;
2125
2126 while (w_)
2127 {
2128 ev_stat *w = (ev_stat *)w_;
2129 w_ = w_->next; /* lets us add this watcher */
2130
2131 w->wd = -1;
2132
2133 if (fs_fd >= 0)
2134 infy_add (EV_A_ w); /* re-add, no matter what */
2135 else
2136 ev_timer_start (EV_A_ &w->timer);
2137 }
2138
2139 }
2140}
2141
2142#endif
2143
2144void
2145ev_stat_stat (EV_P_ ev_stat *w)
2146{
2147 if (lstat (w->path, &w->attr) < 0)
2148 w->attr.st_nlink = 0;
2149 else if (!w->attr.st_nlink)
2150 w->attr.st_nlink = 1;
2151}
2152
2153static void noinline
2154stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2155{
2156 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2157
2158 /* we copy this here each the time so that */
2159 /* prev has the old value when the callback gets invoked */
2160 w->prev = w->attr;
2161 ev_stat_stat (EV_A_ w);
2162
2163 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2164 if (
2165 w->prev.st_dev != w->attr.st_dev
2166 || w->prev.st_ino != w->attr.st_ino
2167 || w->prev.st_mode != w->attr.st_mode
2168 || w->prev.st_nlink != w->attr.st_nlink
2169 || w->prev.st_uid != w->attr.st_uid
2170 || w->prev.st_gid != w->attr.st_gid
2171 || w->prev.st_rdev != w->attr.st_rdev
2172 || w->prev.st_size != w->attr.st_size
2173 || w->prev.st_atime != w->attr.st_atime
2174 || w->prev.st_mtime != w->attr.st_mtime
2175 || w->prev.st_ctime != w->attr.st_ctime
2176 ) {
2177 #if EV_USE_INOTIFY
2178 infy_del (EV_A_ w);
2179 infy_add (EV_A_ w);
2180 ev_stat_stat (EV_A_ w); /* avoid race... */
2181 #endif
2182
2183 ev_feed_event (EV_A_ w, EV_STAT);
2184 }
2185}
2186
2187void
2188ev_stat_start (EV_P_ ev_stat *w)
2189{
2190 if (expect_false (ev_is_active (w)))
2191 return;
2192
2193 /* since we use memcmp, we need to clear any padding data etc. */
2194 memset (&w->prev, 0, sizeof (ev_statdata));
2195 memset (&w->attr, 0, sizeof (ev_statdata));
2196
2197 ev_stat_stat (EV_A_ w);
2198
2199 if (w->interval < MIN_STAT_INTERVAL)
2200 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2201
2202 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
2203 ev_set_priority (&w->timer, ev_priority (w));
2204
2205#if EV_USE_INOTIFY
2206 infy_init (EV_A);
2207
2208 if (fs_fd >= 0)
2209 infy_add (EV_A_ w);
2210 else
2211#endif
2212 ev_timer_start (EV_A_ &w->timer);
2213
2214 ev_start (EV_A_ (W)w, 1);
2215}
2216
2217void
2218ev_stat_stop (EV_P_ ev_stat *w)
2219{
2220 clear_pending (EV_A_ (W)w);
2221 if (expect_false (!ev_is_active (w)))
2222 return;
2223
2224#if EV_USE_INOTIFY
2225 infy_del (EV_A_ w);
2226#endif
2227 ev_timer_stop (EV_A_ &w->timer);
2228
2229 ev_stop (EV_A_ (W)w);
2230}
2231#endif
2232
2233#if EV_IDLE_ENABLE
2234void
2235ev_idle_start (EV_P_ ev_idle *w)
2236{
2237 if (expect_false (ev_is_active (w)))
2238 return;
2239
2240 pri_adjust (EV_A_ (W)w);
2241
2242 {
2243 int active = ++idlecnt [ABSPRI (w)];
2244
2245 ++idleall;
2246 ev_start (EV_A_ (W)w, active);
2247
2248 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2249 idles [ABSPRI (w)][active - 1] = w;
2250 }
2251}
2252
2253void
2254ev_idle_stop (EV_P_ ev_idle *w)
2255{
2256 clear_pending (EV_A_ (W)w);
2257 if (expect_false (!ev_is_active (w)))
2258 return;
2259
2260 {
2261 int active = ((W)w)->active;
2262
2263 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2264 ((W)idles [ABSPRI (w)][active - 1])->active = active;
2265
2266 ev_stop (EV_A_ (W)w);
2267 --idleall;
2268 }
2269}
2270#endif
2271
2272void
2273ev_prepare_start (EV_P_ ev_prepare *w)
2274{
2275 if (expect_false (ev_is_active (w)))
2276 return;
2277
2278 ev_start (EV_A_ (W)w, ++preparecnt);
2279 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2280 prepares [preparecnt - 1] = w;
2281}
2282
2283void
2284ev_prepare_stop (EV_P_ ev_prepare *w)
2285{
2286 clear_pending (EV_A_ (W)w);
2287 if (expect_false (!ev_is_active (w)))
2288 return;
2289
2290 {
2291 int active = ((W)w)->active;
2292 prepares [active - 1] = prepares [--preparecnt];
2293 ((W)prepares [active - 1])->active = active;
2294 }
2295
2296 ev_stop (EV_A_ (W)w);
2297}
2298
2299void
2300ev_check_start (EV_P_ ev_check *w)
2301{
2302 if (expect_false (ev_is_active (w)))
2303 return;
2304
2305 ev_start (EV_A_ (W)w, ++checkcnt);
2306 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2307 checks [checkcnt - 1] = w;
2308}
2309
2310void
2311ev_check_stop (EV_P_ ev_check *w)
2312{
2313 clear_pending (EV_A_ (W)w);
2314 if (expect_false (!ev_is_active (w)))
2315 return;
2316
2317 {
2318 int active = ((W)w)->active;
2319 checks [active - 1] = checks [--checkcnt];
2320 ((W)checks [active - 1])->active = active;
2321 }
2322
2323 ev_stop (EV_A_ (W)w);
2324}
2325
2326#if EV_EMBED_ENABLE
2327void noinline
2328ev_embed_sweep (EV_P_ ev_embed *w)
2329{
2330 ev_loop (w->other, EVLOOP_NONBLOCK);
2331}
2332
2333static void
2334embed_io_cb (EV_P_ ev_io *io, int revents)
2335{
2336 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2337
2338 if (ev_cb (w))
2339 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2340 else
2341 ev_loop (w->other, EVLOOP_NONBLOCK);
2342}
2343
2344static void
2345embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2346{
2347 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2348
2349 {
2350 struct ev_loop *loop = w->other;
2351
2352 while (fdchangecnt)
2353 {
2354 fd_reify (EV_A);
2355 ev_loop (EV_A_ EVLOOP_NONBLOCK);
2356 }
2357 }
2358}
2359
2360#if 0
2361static void
2362embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2363{
2364 ev_idle_stop (EV_A_ idle);
2365}
2366#endif
2367
2368void
2369ev_embed_start (EV_P_ ev_embed *w)
2370{
2371 if (expect_false (ev_is_active (w)))
2372 return;
2373
2374 {
2375 struct ev_loop *loop = w->other;
2376 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2377 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2378 }
2379
2380 ev_set_priority (&w->io, ev_priority (w));
2381 ev_io_start (EV_A_ &w->io);
2382
2383 ev_prepare_init (&w->prepare, embed_prepare_cb);
2384 ev_set_priority (&w->prepare, EV_MINPRI);
2385 ev_prepare_start (EV_A_ &w->prepare);
2386
2387 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2388
2389 ev_start (EV_A_ (W)w, 1);
2390}
2391
2392void
2393ev_embed_stop (EV_P_ ev_embed *w)
2394{
2395 clear_pending (EV_A_ (W)w);
2396 if (expect_false (!ev_is_active (w)))
2397 return;
2398
2399 ev_io_stop (EV_A_ &w->io);
2400 ev_prepare_stop (EV_A_ &w->prepare);
2401
2402 ev_stop (EV_A_ (W)w);
2403}
2404#endif
2405
2406#if EV_FORK_ENABLE
2407void
2408ev_fork_start (EV_P_ ev_fork *w)
2409{
2410 if (expect_false (ev_is_active (w)))
2411 return;
2412
2413 ev_start (EV_A_ (W)w, ++forkcnt);
2414 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2415 forks [forkcnt - 1] = w;
2416}
2417
2418void
2419ev_fork_stop (EV_P_ ev_fork *w)
2420{
2421 clear_pending (EV_A_ (W)w);
2422 if (expect_false (!ev_is_active (w)))
2423 return;
2424
2425 {
2426 int active = ((W)w)->active;
2427 forks [active - 1] = forks [--forkcnt];
2428 ((W)forks [active - 1])->active = active;
2429 }
2430
2431 ev_stop (EV_A_ (W)w);
2432}
2433#endif
2434
2435#if EV_ASYNC_ENABLE
2436void
2437ev_async_start (EV_P_ ev_async *w)
2438{
2439 if (expect_false (ev_is_active (w)))
2440 return;
2441
2442 evpipe_init (EV_A);
2443
2444 ev_start (EV_A_ (W)w, ++asynccnt);
2445 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
2446 asyncs [asynccnt - 1] = w;
2447}
2448
2449void
2450ev_async_stop (EV_P_ ev_async *w)
2451{
2452 clear_pending (EV_A_ (W)w);
2453 if (expect_false (!ev_is_active (w)))
2454 return;
2455
2456 {
2457 int active = ((W)w)->active;
2458 asyncs [active - 1] = asyncs [--asynccnt];
2459 ((W)asyncs [active - 1])->active = active;
2460 }
2461
2462 ev_stop (EV_A_ (W)w);
2463}
2464
2465void
2466ev_async_send (EV_P_ ev_async *w)
2467{
2468 w->sent = 1;
2469 evpipe_write (EV_A_ 0, 1);
2470}
2471#endif
2472
1532/*****************************************************************************/ 2473/*****************************************************************************/
1533 2474
1534struct ev_once 2475struct ev_once
1535{ 2476{
1536 struct ev_io io; 2477 ev_io io;
1537 struct ev_timer to; 2478 ev_timer to;
1538 void (*cb)(int revents, void *arg); 2479 void (*cb)(int revents, void *arg);
1539 void *arg; 2480 void *arg;
1540}; 2481};
1541 2482
1542static void 2483static void
… …
1551 2492
1552 cb (revents, arg); 2493 cb (revents, arg);
1553} 2494}
1554 2495
1555static void 2496static void
1556once_cb_io (EV_P_ struct ev_io *w, int revents) 2497once_cb_io (EV_P_ ev_io *w, int revents)
1557{ 2498{
1558 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 2499 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1559} 2500}
1560 2501
1561static void 2502static void
1562once_cb_to (EV_P_ struct ev_timer *w, int revents) 2503once_cb_to (EV_P_ ev_timer *w, int revents)
1563{ 2504{
1564 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 2505 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1565} 2506}
1566 2507
1567void 2508void
1568ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 2509ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1569{ 2510{
1570 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 2511 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1571 2512
1572 if (!once) 2513 if (expect_false (!once))
2514 {
1573 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 2515 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1574 else 2516 return;
1575 { 2517 }
2518
1576 once->cb = cb; 2519 once->cb = cb;
1577 once->arg = arg; 2520 once->arg = arg;
1578 2521
1579 ev_init (&once->io, once_cb_io); 2522 ev_init (&once->io, once_cb_io);
1580 if (fd >= 0) 2523 if (fd >= 0)
1581 { 2524 {
1582 ev_io_set (&once->io, fd, events); 2525 ev_io_set (&once->io, fd, events);
1583 ev_io_start (EV_A_ &once->io); 2526 ev_io_start (EV_A_ &once->io);
1584 } 2527 }
1585 2528
1586 ev_init (&once->to, once_cb_to); 2529 ev_init (&once->to, once_cb_to);
1587 if (timeout >= 0.) 2530 if (timeout >= 0.)
1588 { 2531 {
1589 ev_timer_set (&once->to, timeout, 0.); 2532 ev_timer_set (&once->to, timeout, 0.);
1590 ev_timer_start (EV_A_ &once->to); 2533 ev_timer_start (EV_A_ &once->to);
1591 }
1592 } 2534 }
1593} 2535}
1594 2536
2537#if EV_MULTIPLICITY
2538 #include "ev_wrap.h"
2539#endif
2540
2541#ifdef __cplusplus
2542}
2543#endif
2544

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