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Comparing libev/ev.c (file contents):
Revision 1.189 by root, Thu Dec 20 10:12:22 2007 UTC vs.
Revision 1.313 by root, Wed Aug 19 23:44:51 2009 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) 2007,2008,2009 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * modification, are permitted provided that the following conditions are 8 * tion, are permitted provided that the following conditions are met:
9 * met: 9 *
10 * 1. Redistributions of source code must retain the above copyright notice,
11 * this list of conditions and the following disclaimer.
12 *
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
22 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
23 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
24 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
25 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
26 * OF THE POSSIBILITY OF SUCH DAMAGE.
10 * 27 *
11 * * Redistributions of source code must retain the above copyright 28 * Alternatively, the contents of this file may be used under the terms of
12 * notice, this list of conditions and the following disclaimer. 29 * the GNU General Public License ("GPL") version 2 or any later version,
13 * 30 * in which case the provisions of the GPL are applicable instead of
14 * * Redistributions in binary form must reproduce the above 31 * the above. If you wish to allow the use of your version of this file
15 * copyright notice, this list of conditions and the following 32 * only under the terms of the GPL and not to allow others to use your
16 * disclaimer in the documentation and/or other materials provided 33 * version of this file under the BSD license, indicate your decision
17 * with the distribution. 34 * by deleting the provisions above and replace them with the notice
18 * 35 * and other provisions required by the GPL. If you do not delete the
19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 36 * provisions above, a recipient may use your version of this file under
20 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 37 * either the BSD or the GPL.
21 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
22 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
23 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
24 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
25 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
26 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
29 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 */ 38 */
31 39
32#ifdef __cplusplus 40#ifdef __cplusplus
33extern "C" { 41extern "C" {
34#endif 42#endif
35 43
44/* this big block deduces configuration from config.h */
36#ifndef EV_STANDALONE 45#ifndef EV_STANDALONE
37# ifdef EV_CONFIG_H 46# ifdef EV_CONFIG_H
38# include EV_CONFIG_H 47# include EV_CONFIG_H
39# else 48# else
40# include "config.h" 49# include "config.h"
41# endif 50# endif
42 51
52# if HAVE_CLOCK_SYSCALL
53# ifndef EV_USE_CLOCK_SYSCALL
54# define EV_USE_CLOCK_SYSCALL 1
55# ifndef EV_USE_REALTIME
56# define EV_USE_REALTIME 0
57# endif
58# ifndef EV_USE_MONOTONIC
59# define EV_USE_MONOTONIC 1
60# endif
61# endif
62# elif !defined(EV_USE_CLOCK_SYSCALL)
63# define EV_USE_CLOCK_SYSCALL 0
64# endif
65
43# if HAVE_CLOCK_GETTIME 66# if HAVE_CLOCK_GETTIME
44# ifndef EV_USE_MONOTONIC 67# ifndef EV_USE_MONOTONIC
45# define EV_USE_MONOTONIC 1 68# define EV_USE_MONOTONIC 1
46# endif 69# endif
47# ifndef EV_USE_REALTIME 70# ifndef EV_USE_REALTIME
48# define EV_USE_REALTIME 1 71# define EV_USE_REALTIME 0
49# endif 72# endif
50# else 73# else
51# ifndef EV_USE_MONOTONIC 74# ifndef EV_USE_MONOTONIC
52# define EV_USE_MONOTONIC 0 75# define EV_USE_MONOTONIC 0
53# endif 76# endif
54# ifndef EV_USE_REALTIME 77# ifndef EV_USE_REALTIME
55# define EV_USE_REALTIME 0 78# define EV_USE_REALTIME 0
79# endif
80# endif
81
82# ifndef EV_USE_NANOSLEEP
83# if HAVE_NANOSLEEP
84# define EV_USE_NANOSLEEP 1
85# else
86# define EV_USE_NANOSLEEP 0
56# endif 87# endif
57# endif 88# endif
58 89
59# ifndef EV_USE_SELECT 90# ifndef EV_USE_SELECT
60# if HAVE_SELECT && HAVE_SYS_SELECT_H 91# if HAVE_SELECT && HAVE_SYS_SELECT_H
… …
102# else 133# else
103# define EV_USE_INOTIFY 0 134# define EV_USE_INOTIFY 0
104# endif 135# endif
105# endif 136# endif
106 137
138# ifndef EV_USE_SIGNALFD
139# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
140# define EV_USE_SIGNALFD 1
141# else
142# define EV_USE_SIGNALFD 0
143# endif
144# endif
145
146# ifndef EV_USE_EVENTFD
147# if HAVE_EVENTFD
148# define EV_USE_EVENTFD 1
149# else
150# define EV_USE_EVENTFD 0
151# endif
152# endif
153
107#endif 154#endif
108 155
109#include <math.h> 156#include <math.h>
110#include <stdlib.h> 157#include <stdlib.h>
111#include <fcntl.h> 158#include <fcntl.h>
… …
129#ifndef _WIN32 176#ifndef _WIN32
130# include <sys/time.h> 177# include <sys/time.h>
131# include <sys/wait.h> 178# include <sys/wait.h>
132# include <unistd.h> 179# include <unistd.h>
133#else 180#else
181# include <io.h>
134# define WIN32_LEAN_AND_MEAN 182# define WIN32_LEAN_AND_MEAN
135# include <windows.h> 183# include <windows.h>
136# ifndef EV_SELECT_IS_WINSOCKET 184# ifndef EV_SELECT_IS_WINSOCKET
137# define EV_SELECT_IS_WINSOCKET 1 185# define EV_SELECT_IS_WINSOCKET 1
138# endif 186# endif
139#endif 187#endif
140 188
141/**/ 189/* this block tries to deduce configuration from header-defined symbols and defaults */
190
191/* try to deduce the maximum number of signals on this platform */
192#if defined (EV_NSIG)
193/* use what's provided */
194#elif defined (NSIG)
195# define EV_NSIG (NSIG)
196#elif defined(_NSIG)
197# define EV_NSIG (_NSIG)
198#elif defined (SIGMAX)
199# define EV_NSIG (SIGMAX+1)
200#elif defined (SIG_MAX)
201# define EV_NSIG (SIG_MAX+1)
202#elif defined (_SIG_MAX)
203# define EV_NSIG (_SIG_MAX+1)
204#elif defined (MAXSIG)
205# define EV_NSIG (MAXSIG+1)
206#elif defined (MAX_SIG)
207# define EV_NSIG (MAX_SIG+1)
208#elif defined (SIGARRAYSIZE)
209# define EV_NSIG SIGARRAYSIZE /* Assume ary[SIGARRAYSIZE] */
210#elif defined (_sys_nsig)
211# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
212#else
213# error "unable to find value for NSIG, please report"
214/* to make it compile regardless, just remove the above line */
215# define EV_NSIG 65
216#endif
217
218#ifndef EV_USE_CLOCK_SYSCALL
219# if __linux && __GLIBC__ >= 2
220# define EV_USE_CLOCK_SYSCALL 1
221# else
222# define EV_USE_CLOCK_SYSCALL 0
223# endif
224#endif
142 225
143#ifndef EV_USE_MONOTONIC 226#ifndef EV_USE_MONOTONIC
227# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
228# define EV_USE_MONOTONIC 1
229# else
144# define EV_USE_MONOTONIC 0 230# define EV_USE_MONOTONIC 0
231# endif
145#endif 232#endif
146 233
147#ifndef EV_USE_REALTIME 234#ifndef EV_USE_REALTIME
148# define EV_USE_REALTIME 0 235# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
236#endif
237
238#ifndef EV_USE_NANOSLEEP
239# if _POSIX_C_SOURCE >= 199309L
240# define EV_USE_NANOSLEEP 1
241# else
242# define EV_USE_NANOSLEEP 0
243# endif
149#endif 244#endif
150 245
151#ifndef EV_USE_SELECT 246#ifndef EV_USE_SELECT
152# define EV_USE_SELECT 1 247# define EV_USE_SELECT 1
153#endif 248#endif
… …
159# define EV_USE_POLL 1 254# define EV_USE_POLL 1
160# endif 255# endif
161#endif 256#endif
162 257
163#ifndef EV_USE_EPOLL 258#ifndef EV_USE_EPOLL
259# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
260# define EV_USE_EPOLL 1
261# else
164# define EV_USE_EPOLL 0 262# define EV_USE_EPOLL 0
263# endif
165#endif 264#endif
166 265
167#ifndef EV_USE_KQUEUE 266#ifndef EV_USE_KQUEUE
168# define EV_USE_KQUEUE 0 267# define EV_USE_KQUEUE 0
169#endif 268#endif
… …
171#ifndef EV_USE_PORT 270#ifndef EV_USE_PORT
172# define EV_USE_PORT 0 271# define EV_USE_PORT 0
173#endif 272#endif
174 273
175#ifndef EV_USE_INOTIFY 274#ifndef EV_USE_INOTIFY
275# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
276# define EV_USE_INOTIFY 1
277# else
176# define EV_USE_INOTIFY 0 278# define EV_USE_INOTIFY 0
279# endif
177#endif 280#endif
178 281
179#ifndef EV_PID_HASHSIZE 282#ifndef EV_PID_HASHSIZE
180# if EV_MINIMAL 283# if EV_MINIMAL
181# define EV_PID_HASHSIZE 1 284# define EV_PID_HASHSIZE 1
… …
190# else 293# else
191# define EV_INOTIFY_HASHSIZE 16 294# define EV_INOTIFY_HASHSIZE 16
192# endif 295# endif
193#endif 296#endif
194 297
195/**/ 298#ifndef EV_USE_EVENTFD
299# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
300# define EV_USE_EVENTFD 1
301# else
302# define EV_USE_EVENTFD 0
303# endif
304#endif
305
306#ifndef EV_USE_SIGNALFD
307# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 9))
308# define EV_USE_SIGNALFD 1
309# else
310# define EV_USE_SIGNALFD 0
311# endif
312#endif
313
314#if 0 /* debugging */
315# define EV_VERIFY 3
316# define EV_USE_4HEAP 1
317# define EV_HEAP_CACHE_AT 1
318#endif
319
320#ifndef EV_VERIFY
321# define EV_VERIFY !EV_MINIMAL
322#endif
323
324#ifndef EV_USE_4HEAP
325# define EV_USE_4HEAP !EV_MINIMAL
326#endif
327
328#ifndef EV_HEAP_CACHE_AT
329# define EV_HEAP_CACHE_AT !EV_MINIMAL
330#endif
331
332/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
333/* which makes programs even slower. might work on other unices, too. */
334#if EV_USE_CLOCK_SYSCALL
335# include <syscall.h>
336# ifdef SYS_clock_gettime
337# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
338# undef EV_USE_MONOTONIC
339# define EV_USE_MONOTONIC 1
340# else
341# undef EV_USE_CLOCK_SYSCALL
342# define EV_USE_CLOCK_SYSCALL 0
343# endif
344#endif
345
346/* this block fixes any misconfiguration where we know we run into trouble otherwise */
196 347
197#ifndef CLOCK_MONOTONIC 348#ifndef CLOCK_MONOTONIC
198# undef EV_USE_MONOTONIC 349# undef EV_USE_MONOTONIC
199# define EV_USE_MONOTONIC 0 350# define EV_USE_MONOTONIC 0
200#endif 351#endif
… …
207#if !EV_STAT_ENABLE 358#if !EV_STAT_ENABLE
208# undef EV_USE_INOTIFY 359# undef EV_USE_INOTIFY
209# define EV_USE_INOTIFY 0 360# define EV_USE_INOTIFY 0
210#endif 361#endif
211 362
363#if !EV_USE_NANOSLEEP
364# ifndef _WIN32
365# include <sys/select.h>
366# endif
367#endif
368
212#if EV_USE_INOTIFY 369#if EV_USE_INOTIFY
370# include <sys/utsname.h>
371# include <sys/statfs.h>
213# include <sys/inotify.h> 372# include <sys/inotify.h>
373/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
374# ifndef IN_DONT_FOLLOW
375# undef EV_USE_INOTIFY
376# define EV_USE_INOTIFY 0
377# endif
214#endif 378#endif
215 379
216#if EV_SELECT_IS_WINSOCKET 380#if EV_SELECT_IS_WINSOCKET
217# include <winsock.h> 381# include <winsock.h>
218#endif 382#endif
219 383
384#if EV_USE_EVENTFD
385/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
386# include <stdint.h>
387# ifndef EFD_NONBLOCK
388# define EFD_NONBLOCK O_NONBLOCK
389# endif
390# ifndef EFD_CLOEXEC
391# ifdef O_CLOEXEC
392# define EFD_CLOEXEC O_CLOEXEC
393# else
394# define EFD_CLOEXEC 02000000
395# endif
396# endif
397# ifdef __cplusplus
398extern "C" {
399# endif
400int eventfd (unsigned int initval, int flags);
401# ifdef __cplusplus
402}
403# endif
404#endif
405
406#if EV_USE_SIGNALFD
407# include <sys/signalfd.h>
408#endif
409
220/**/ 410/**/
411
412#if EV_VERIFY >= 3
413# define EV_FREQUENT_CHECK ev_loop_verify (EV_A)
414#else
415# define EV_FREQUENT_CHECK do { } while (0)
416#endif
221 417
222/* 418/*
223 * This is used to avoid floating point rounding problems. 419 * This is used to avoid floating point rounding problems.
224 * It is added to ev_rt_now when scheduling periodics 420 * It is added to ev_rt_now when scheduling periodics
225 * to ensure progress, time-wise, even when rounding 421 * to ensure progress, time-wise, even when rounding
… …
237# define expect(expr,value) __builtin_expect ((expr),(value)) 433# define expect(expr,value) __builtin_expect ((expr),(value))
238# define noinline __attribute__ ((noinline)) 434# define noinline __attribute__ ((noinline))
239#else 435#else
240# define expect(expr,value) (expr) 436# define expect(expr,value) (expr)
241# define noinline 437# define noinline
242# if __STDC_VERSION__ < 199901L 438# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
243# define inline 439# define inline
244# endif 440# endif
245#endif 441#endif
246 442
247#define expect_false(expr) expect ((expr) != 0, 0) 443#define expect_false(expr) expect ((expr) != 0, 0)
… …
252# define inline_speed static noinline 448# define inline_speed static noinline
253#else 449#else
254# define inline_speed static inline 450# define inline_speed static inline
255#endif 451#endif
256 452
257#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 453#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
454
455#if EV_MINPRI == EV_MAXPRI
456# define ABSPRI(w) (((W)w), 0)
457#else
258#define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 458# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
459#endif
259 460
260#define EMPTY /* required for microsofts broken pseudo-c compiler */ 461#define EMPTY /* required for microsofts broken pseudo-c compiler */
261#define EMPTY2(a,b) /* used to suppress some warnings */ 462#define EMPTY2(a,b) /* used to suppress some warnings */
262 463
263typedef ev_watcher *W; 464typedef ev_watcher *W;
264typedef ev_watcher_list *WL; 465typedef ev_watcher_list *WL;
265typedef ev_watcher_time *WT; 466typedef ev_watcher_time *WT;
266 467
468#define ev_active(w) ((W)(w))->active
469#define ev_at(w) ((WT)(w))->at
470
471#if EV_USE_REALTIME
472/* sig_atomic_t is used to avoid per-thread variables or locking but still */
473/* giving it a reasonably high chance of working on typical architetcures */
474static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
475#endif
476
477#if EV_USE_MONOTONIC
267static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 478static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
479#endif
480
481#ifndef EV_FD_TO_WIN32_HANDLE
482# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
483#endif
484#ifndef EV_WIN32_HANDLE_TO_FD
485# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (fd, 0)
486#endif
487#ifndef EV_WIN32_CLOSE_FD
488# define EV_WIN32_CLOSE_FD(fd) close (fd)
489#endif
268 490
269#ifdef _WIN32 491#ifdef _WIN32
270# include "ev_win32.c" 492# include "ev_win32.c"
271#endif 493#endif
272 494
… …
279{ 501{
280 syserr_cb = cb; 502 syserr_cb = cb;
281} 503}
282 504
283static void noinline 505static void noinline
284syserr (const char *msg) 506ev_syserr (const char *msg)
285{ 507{
286 if (!msg) 508 if (!msg)
287 msg = "(libev) system error"; 509 msg = "(libev) system error";
288 510
289 if (syserr_cb) 511 if (syserr_cb)
… …
293 perror (msg); 515 perror (msg);
294 abort (); 516 abort ();
295 } 517 }
296} 518}
297 519
520static void *
521ev_realloc_emul (void *ptr, long size)
522{
523 /* some systems, notably openbsd and darwin, fail to properly
524 * implement realloc (x, 0) (as required by both ansi c-98 and
525 * the single unix specification, so work around them here.
526 */
527
528 if (size)
529 return realloc (ptr, size);
530
531 free (ptr);
532 return 0;
533}
534
298static void *(*alloc)(void *ptr, long size); 535static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
299 536
300void 537void
301ev_set_allocator (void *(*cb)(void *ptr, long size)) 538ev_set_allocator (void *(*cb)(void *ptr, long size))
302{ 539{
303 alloc = cb; 540 alloc = cb;
304} 541}
305 542
306inline_speed void * 543inline_speed void *
307ev_realloc (void *ptr, long size) 544ev_realloc (void *ptr, long size)
308{ 545{
309 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size); 546 ptr = alloc (ptr, size);
310 547
311 if (!ptr && size) 548 if (!ptr && size)
312 { 549 {
313 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 550 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
314 abort (); 551 abort ();
… …
320#define ev_malloc(size) ev_realloc (0, (size)) 557#define ev_malloc(size) ev_realloc (0, (size))
321#define ev_free(ptr) ev_realloc ((ptr), 0) 558#define ev_free(ptr) ev_realloc ((ptr), 0)
322 559
323/*****************************************************************************/ 560/*****************************************************************************/
324 561
562/* set in reify when reification needed */
563#define EV_ANFD_REIFY 1
564
565/* file descriptor info structure */
325typedef struct 566typedef struct
326{ 567{
327 WL head; 568 WL head;
328 unsigned char events; 569 unsigned char events; /* the events watched for */
570 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
571 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
329 unsigned char reify; 572 unsigned char unused;
573#if EV_USE_EPOLL
574 unsigned int egen; /* generation counter to counter epoll bugs */
575#endif
330#if EV_SELECT_IS_WINSOCKET 576#if EV_SELECT_IS_WINSOCKET
331 SOCKET handle; 577 SOCKET handle;
332#endif 578#endif
333} ANFD; 579} ANFD;
334 580
581/* stores the pending event set for a given watcher */
335typedef struct 582typedef struct
336{ 583{
337 W w; 584 W w;
338 int events; 585 int events; /* the pending event set for the given watcher */
339} ANPENDING; 586} ANPENDING;
340 587
341#if EV_USE_INOTIFY 588#if EV_USE_INOTIFY
589/* hash table entry per inotify-id */
342typedef struct 590typedef struct
343{ 591{
344 WL head; 592 WL head;
345} ANFS; 593} ANFS;
594#endif
595
596/* Heap Entry */
597#if EV_HEAP_CACHE_AT
598 /* a heap element */
599 typedef struct {
600 ev_tstamp at;
601 WT w;
602 } ANHE;
603
604 #define ANHE_w(he) (he).w /* access watcher, read-write */
605 #define ANHE_at(he) (he).at /* access cached at, read-only */
606 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
607#else
608 /* a heap element */
609 typedef WT ANHE;
610
611 #define ANHE_w(he) (he)
612 #define ANHE_at(he) (he)->at
613 #define ANHE_at_cache(he)
346#endif 614#endif
347 615
348#if EV_MULTIPLICITY 616#if EV_MULTIPLICITY
349 617
350 struct ev_loop 618 struct ev_loop
… …
369 637
370 static int ev_default_loop_ptr; 638 static int ev_default_loop_ptr;
371 639
372#endif 640#endif
373 641
642#if EV_MINIMAL < 2
643# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
644# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
645# define EV_INVOKE_PENDING invoke_cb (EV_A)
646#else
647# define EV_RELEASE_CB (void)0
648# define EV_ACQUIRE_CB (void)0
649# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
650#endif
651
652#define EVUNLOOP_RECURSE 0x80
653
374/*****************************************************************************/ 654/*****************************************************************************/
375 655
656#ifndef EV_HAVE_EV_TIME
376ev_tstamp 657ev_tstamp
377ev_time (void) 658ev_time (void)
378{ 659{
379#if EV_USE_REALTIME 660#if EV_USE_REALTIME
661 if (expect_true (have_realtime))
662 {
380 struct timespec ts; 663 struct timespec ts;
381 clock_gettime (CLOCK_REALTIME, &ts); 664 clock_gettime (CLOCK_REALTIME, &ts);
382 return ts.tv_sec + ts.tv_nsec * 1e-9; 665 return ts.tv_sec + ts.tv_nsec * 1e-9;
383#else 666 }
667#endif
668
384 struct timeval tv; 669 struct timeval tv;
385 gettimeofday (&tv, 0); 670 gettimeofday (&tv, 0);
386 return tv.tv_sec + tv.tv_usec * 1e-6; 671 return tv.tv_sec + tv.tv_usec * 1e-6;
387#endif
388} 672}
673#endif
389 674
390ev_tstamp inline_size 675inline_size ev_tstamp
391get_clock (void) 676get_clock (void)
392{ 677{
393#if EV_USE_MONOTONIC 678#if EV_USE_MONOTONIC
394 if (expect_true (have_monotonic)) 679 if (expect_true (have_monotonic))
395 { 680 {
… …
408{ 693{
409 return ev_rt_now; 694 return ev_rt_now;
410} 695}
411#endif 696#endif
412 697
413int inline_size 698void
699ev_sleep (ev_tstamp delay)
700{
701 if (delay > 0.)
702 {
703#if EV_USE_NANOSLEEP
704 struct timespec ts;
705
706 ts.tv_sec = (time_t)delay;
707 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
708
709 nanosleep (&ts, 0);
710#elif defined(_WIN32)
711 Sleep ((unsigned long)(delay * 1e3));
712#else
713 struct timeval tv;
714
715 tv.tv_sec = (time_t)delay;
716 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
717
718 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
719 /* something not guaranteed by newer posix versions, but guaranteed */
720 /* by older ones */
721 select (0, 0, 0, 0, &tv);
722#endif
723 }
724}
725
726/*****************************************************************************/
727
728#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
729
730/* find a suitable new size for the given array, */
731/* hopefully by rounding to a ncie-to-malloc size */
732inline_size int
414array_nextsize (int elem, int cur, int cnt) 733array_nextsize (int elem, int cur, int cnt)
415{ 734{
416 int ncur = cur + 1; 735 int ncur = cur + 1;
417 736
418 do 737 do
419 ncur <<= 1; 738 ncur <<= 1;
420 while (cnt > ncur); 739 while (cnt > ncur);
421 740
422 /* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */ 741 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */
423 if (elem * ncur > 4096) 742 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
424 { 743 {
425 ncur *= elem; 744 ncur *= elem;
426 ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095; 745 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
427 ncur = ncur - sizeof (void *) * 4; 746 ncur = ncur - sizeof (void *) * 4;
428 ncur /= elem; 747 ncur /= elem;
429 } 748 }
430 749
431 return ncur; 750 return ncur;
… …
435array_realloc (int elem, void *base, int *cur, int cnt) 754array_realloc (int elem, void *base, int *cur, int cnt)
436{ 755{
437 *cur = array_nextsize (elem, *cur, cnt); 756 *cur = array_nextsize (elem, *cur, cnt);
438 return ev_realloc (base, elem * *cur); 757 return ev_realloc (base, elem * *cur);
439} 758}
759
760#define array_init_zero(base,count) \
761 memset ((void *)(base), 0, sizeof (*(base)) * (count))
440 762
441#define array_needsize(type,base,cur,cnt,init) \ 763#define array_needsize(type,base,cur,cnt,init) \
442 if (expect_false ((cnt) > (cur))) \ 764 if (expect_false ((cnt) > (cur))) \
443 { \ 765 { \
444 int ocur_ = (cur); \ 766 int ocur_ = (cur); \
… …
456 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 778 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
457 } 779 }
458#endif 780#endif
459 781
460#define array_free(stem, idx) \ 782#define array_free(stem, idx) \
461 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 783 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
462 784
463/*****************************************************************************/ 785/*****************************************************************************/
786
787/* dummy callback for pending events */
788static void noinline
789pendingcb (EV_P_ ev_prepare *w, int revents)
790{
791}
464 792
465void noinline 793void noinline
466ev_feed_event (EV_P_ void *w, int revents) 794ev_feed_event (EV_P_ void *w, int revents)
467{ 795{
468 W w_ = (W)w; 796 W w_ = (W)w;
… …
477 pendings [pri][w_->pending - 1].w = w_; 805 pendings [pri][w_->pending - 1].w = w_;
478 pendings [pri][w_->pending - 1].events = revents; 806 pendings [pri][w_->pending - 1].events = revents;
479 } 807 }
480} 808}
481 809
482void inline_speed 810inline_speed void
811feed_reverse (EV_P_ W w)
812{
813 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
814 rfeeds [rfeedcnt++] = w;
815}
816
817inline_size void
818feed_reverse_done (EV_P_ int revents)
819{
820 do
821 ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
822 while (rfeedcnt);
823}
824
825inline_speed void
483queue_events (EV_P_ W *events, int eventcnt, int type) 826queue_events (EV_P_ W *events, int eventcnt, int type)
484{ 827{
485 int i; 828 int i;
486 829
487 for (i = 0; i < eventcnt; ++i) 830 for (i = 0; i < eventcnt; ++i)
488 ev_feed_event (EV_A_ events [i], type); 831 ev_feed_event (EV_A_ events [i], type);
489} 832}
490 833
491/*****************************************************************************/ 834/*****************************************************************************/
492 835
493void inline_size 836inline_speed void
494anfds_init (ANFD *base, int count)
495{
496 while (count--)
497 {
498 base->head = 0;
499 base->events = EV_NONE;
500 base->reify = 0;
501
502 ++base;
503 }
504}
505
506void inline_speed
507fd_event (EV_P_ int fd, int revents) 837fd_event_nc (EV_P_ int fd, int revents)
508{ 838{
509 ANFD *anfd = anfds + fd; 839 ANFD *anfd = anfds + fd;
510 ev_io *w; 840 ev_io *w;
511 841
512 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 842 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
516 if (ev) 846 if (ev)
517 ev_feed_event (EV_A_ (W)w, ev); 847 ev_feed_event (EV_A_ (W)w, ev);
518 } 848 }
519} 849}
520 850
851/* do not submit kernel events for fds that have reify set */
852/* because that means they changed while we were polling for new events */
853inline_speed void
854fd_event (EV_P_ int fd, int revents)
855{
856 ANFD *anfd = anfds + fd;
857
858 if (expect_true (!anfd->reify))
859 fd_event_nc (EV_A_ fd, revents);
860}
861
521void 862void
522ev_feed_fd_event (EV_P_ int fd, int revents) 863ev_feed_fd_event (EV_P_ int fd, int revents)
523{ 864{
524 if (fd >= 0 && fd < anfdmax) 865 if (fd >= 0 && fd < anfdmax)
525 fd_event (EV_A_ fd, revents); 866 fd_event_nc (EV_A_ fd, revents);
526} 867}
527 868
528void inline_size 869/* make sure the external fd watch events are in-sync */
870/* with the kernel/libev internal state */
871inline_size void
529fd_reify (EV_P) 872fd_reify (EV_P)
530{ 873{
531 int i; 874 int i;
532 875
533 for (i = 0; i < fdchangecnt; ++i) 876 for (i = 0; i < fdchangecnt; ++i)
… …
542 events |= (unsigned char)w->events; 885 events |= (unsigned char)w->events;
543 886
544#if EV_SELECT_IS_WINSOCKET 887#if EV_SELECT_IS_WINSOCKET
545 if (events) 888 if (events)
546 { 889 {
547 unsigned long argp; 890 unsigned long arg;
548 anfd->handle = _get_osfhandle (fd); 891 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
549 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0)); 892 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
550 } 893 }
551#endif 894#endif
552 895
553 { 896 {
554 unsigned char o_events = anfd->events; 897 unsigned char o_events = anfd->events;
555 unsigned char o_reify = anfd->reify; 898 unsigned char o_reify = anfd->reify;
556 899
557 anfd->reify = 0; 900 anfd->reify = 0;
558 anfd->events = events; 901 anfd->events = events;
559 902
560 if (o_events != events || o_reify & EV_IOFDSET) 903 if (o_events != events || o_reify & EV__IOFDSET)
561 backend_modify (EV_A_ fd, o_events, events); 904 backend_modify (EV_A_ fd, o_events, events);
562 } 905 }
563 } 906 }
564 907
565 fdchangecnt = 0; 908 fdchangecnt = 0;
566} 909}
567 910
568void inline_size 911/* something about the given fd changed */
912inline_size void
569fd_change (EV_P_ int fd, int flags) 913fd_change (EV_P_ int fd, int flags)
570{ 914{
571 unsigned char reify = anfds [fd].reify; 915 unsigned char reify = anfds [fd].reify;
572 anfds [fd].reify |= flags; 916 anfds [fd].reify |= flags;
573 917
… …
577 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 921 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
578 fdchanges [fdchangecnt - 1] = fd; 922 fdchanges [fdchangecnt - 1] = fd;
579 } 923 }
580} 924}
581 925
582void inline_speed 926/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
927inline_speed void
583fd_kill (EV_P_ int fd) 928fd_kill (EV_P_ int fd)
584{ 929{
585 ev_io *w; 930 ev_io *w;
586 931
587 while ((w = (ev_io *)anfds [fd].head)) 932 while ((w = (ev_io *)anfds [fd].head))
… …
589 ev_io_stop (EV_A_ w); 934 ev_io_stop (EV_A_ w);
590 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 935 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
591 } 936 }
592} 937}
593 938
594int inline_size 939/* check whether the given fd is atcually valid, for error recovery */
940inline_size int
595fd_valid (int fd) 941fd_valid (int fd)
596{ 942{
597#ifdef _WIN32 943#ifdef _WIN32
598 return _get_osfhandle (fd) != -1; 944 return _get_osfhandle (fd) != -1;
599#else 945#else
… …
607{ 953{
608 int fd; 954 int fd;
609 955
610 for (fd = 0; fd < anfdmax; ++fd) 956 for (fd = 0; fd < anfdmax; ++fd)
611 if (anfds [fd].events) 957 if (anfds [fd].events)
612 if (!fd_valid (fd) == -1 && errno == EBADF) 958 if (!fd_valid (fd) && errno == EBADF)
613 fd_kill (EV_A_ fd); 959 fd_kill (EV_A_ fd);
614} 960}
615 961
616/* called on ENOMEM in select/poll to kill some fds and retry */ 962/* called on ENOMEM in select/poll to kill some fds and retry */
617static void noinline 963static void noinline
… …
621 967
622 for (fd = anfdmax; fd--; ) 968 for (fd = anfdmax; fd--; )
623 if (anfds [fd].events) 969 if (anfds [fd].events)
624 { 970 {
625 fd_kill (EV_A_ fd); 971 fd_kill (EV_A_ fd);
626 return; 972 break;
627 } 973 }
628} 974}
629 975
630/* usually called after fork if backend needs to re-arm all fds from scratch */ 976/* usually called after fork if backend needs to re-arm all fds from scratch */
631static void noinline 977static void noinline
… …
635 981
636 for (fd = 0; fd < anfdmax; ++fd) 982 for (fd = 0; fd < anfdmax; ++fd)
637 if (anfds [fd].events) 983 if (anfds [fd].events)
638 { 984 {
639 anfds [fd].events = 0; 985 anfds [fd].events = 0;
986 anfds [fd].emask = 0;
640 fd_change (EV_A_ fd, EV_IOFDSET | 1); 987 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
641 } 988 }
642} 989}
643 990
644/*****************************************************************************/ 991/*****************************************************************************/
645 992
646void inline_speed 993/*
647upheap (WT *heap, int k) 994 * the heap functions want a real array index. array index 0 uis guaranteed to not
648{ 995 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
649 WT w = heap [k]; 996 * the branching factor of the d-tree.
997 */
650 998
651 while (k) 999/*
652 { 1000 * at the moment we allow libev the luxury of two heaps,
653 int p = (k - 1) >> 1; 1001 * a small-code-size 2-heap one and a ~1.5kb larger 4-heap
1002 * which is more cache-efficient.
1003 * the difference is about 5% with 50000+ watchers.
1004 */
1005#if EV_USE_4HEAP
654 1006
655 if (heap [p]->at <= w->at) 1007#define DHEAP 4
1008#define HEAP0 (DHEAP - 1) /* index of first element in heap */
1009#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
1010#define UPHEAP_DONE(p,k) ((p) == (k))
1011
1012/* away from the root */
1013inline_speed void
1014downheap (ANHE *heap, int N, int k)
1015{
1016 ANHE he = heap [k];
1017 ANHE *E = heap + N + HEAP0;
1018
1019 for (;;)
1020 {
1021 ev_tstamp minat;
1022 ANHE *minpos;
1023 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
1024
1025 /* find minimum child */
1026 if (expect_true (pos + DHEAP - 1 < E))
1027 {
1028 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1029 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
1030 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
1031 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
1032 }
1033 else if (pos < E)
1034 {
1035 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
1036 if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
1037 if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
1038 if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
1039 }
1040 else
656 break; 1041 break;
657 1042
1043 if (ANHE_at (he) <= minat)
1044 break;
1045
1046 heap [k] = *minpos;
1047 ev_active (ANHE_w (*minpos)) = k;
1048
1049 k = minpos - heap;
1050 }
1051
1052 heap [k] = he;
1053 ev_active (ANHE_w (he)) = k;
1054}
1055
1056#else /* 4HEAP */
1057
1058#define HEAP0 1
1059#define HPARENT(k) ((k) >> 1)
1060#define UPHEAP_DONE(p,k) (!(p))
1061
1062/* away from the root */
1063inline_speed void
1064downheap (ANHE *heap, int N, int k)
1065{
1066 ANHE he = heap [k];
1067
1068 for (;;)
1069 {
1070 int c = k << 1;
1071
1072 if (c >= N + HEAP0)
1073 break;
1074
1075 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
1076 ? 1 : 0;
1077
1078 if (ANHE_at (he) <= ANHE_at (heap [c]))
1079 break;
1080
1081 heap [k] = heap [c];
1082 ev_active (ANHE_w (heap [k])) = k;
1083
1084 k = c;
1085 }
1086
1087 heap [k] = he;
1088 ev_active (ANHE_w (he)) = k;
1089}
1090#endif
1091
1092/* towards the root */
1093inline_speed void
1094upheap (ANHE *heap, int k)
1095{
1096 ANHE he = heap [k];
1097
1098 for (;;)
1099 {
1100 int p = HPARENT (k);
1101
1102 if (UPHEAP_DONE (p, k) || ANHE_at (heap [p]) <= ANHE_at (he))
1103 break;
1104
658 heap [k] = heap [p]; 1105 heap [k] = heap [p];
659 ((W)heap [k])->active = k + 1; 1106 ev_active (ANHE_w (heap [k])) = k;
660 k = p; 1107 k = p;
661 } 1108 }
662 1109
663 heap [k] = w; 1110 heap [k] = he;
664 ((W)heap [k])->active = k + 1; 1111 ev_active (ANHE_w (he)) = k;
665} 1112}
666 1113
667void inline_speed 1114/* move an element suitably so it is in a correct place */
668downheap (WT *heap, int N, int k) 1115inline_size void
669{
670 WT w = heap [k];
671
672 for (;;)
673 {
674 int c = (k << 1) + 1;
675
676 if (c >= N)
677 break;
678
679 c += c + 1 < N && heap [c]->at > heap [c + 1]->at
680 ? 1 : 0;
681
682 if (w->at <= heap [c]->at)
683 break;
684
685 heap [k] = heap [c];
686 ((W)heap [k])->active = k + 1;
687
688 k = c;
689 }
690
691 heap [k] = w;
692 ((W)heap [k])->active = k + 1;
693}
694
695void inline_size
696adjustheap (WT *heap, int N, int k) 1116adjustheap (ANHE *heap, int N, int k)
697{ 1117{
1118 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
698 upheap (heap, k); 1119 upheap (heap, k);
1120 else
699 downheap (heap, N, k); 1121 downheap (heap, N, k);
1122}
1123
1124/* rebuild the heap: this function is used only once and executed rarely */
1125inline_size void
1126reheap (ANHE *heap, int N)
1127{
1128 int i;
1129
1130 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
1131 /* also, this is easy to implement and correct for both 2-heaps and 4-heaps */
1132 for (i = 0; i < N; ++i)
1133 upheap (heap, i + HEAP0);
700} 1134}
701 1135
702/*****************************************************************************/ 1136/*****************************************************************************/
703 1137
1138/* associate signal watchers to a signal signal */
704typedef struct 1139typedef struct
705{ 1140{
1141 EV_ATOMIC_T pending;
1142#if EV_MULTIPLICITY
1143 EV_P;
1144#endif
706 WL head; 1145 WL head;
707 sig_atomic_t volatile gotsig;
708} ANSIG; 1146} ANSIG;
709 1147
710static ANSIG *signals; 1148static ANSIG signals [EV_NSIG - 1];
711static int signalmax;
712 1149
713static int sigpipe [2]; 1150/*****************************************************************************/
714static sig_atomic_t volatile gotsig;
715static ev_io sigev;
716 1151
717void inline_size 1152/* used to prepare libev internal fd's */
718signals_init (ANSIG *base, int count) 1153/* this is not fork-safe */
719{ 1154inline_speed void
720 while (count--)
721 {
722 base->head = 0;
723 base->gotsig = 0;
724
725 ++base;
726 }
727}
728
729static void
730sighandler (int signum)
731{
732#if _WIN32
733 signal (signum, sighandler);
734#endif
735
736 signals [signum - 1].gotsig = 1;
737
738 if (!gotsig)
739 {
740 int old_errno = errno;
741 gotsig = 1;
742 write (sigpipe [1], &signum, 1);
743 errno = old_errno;
744 }
745}
746
747void noinline
748ev_feed_signal_event (EV_P_ int signum)
749{
750 WL w;
751
752#if EV_MULTIPLICITY
753 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
754#endif
755
756 --signum;
757
758 if (signum < 0 || signum >= signalmax)
759 return;
760
761 signals [signum].gotsig = 0;
762
763 for (w = signals [signum].head; w; w = w->next)
764 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
765}
766
767static void
768sigcb (EV_P_ ev_io *iow, int revents)
769{
770 int signum;
771
772 read (sigpipe [0], &revents, 1);
773 gotsig = 0;
774
775 for (signum = signalmax; signum--; )
776 if (signals [signum].gotsig)
777 ev_feed_signal_event (EV_A_ signum + 1);
778}
779
780void inline_speed
781fd_intern (int fd) 1155fd_intern (int fd)
782{ 1156{
783#ifdef _WIN32 1157#ifdef _WIN32
784 int arg = 1; 1158 unsigned long arg = 1;
785 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); 1159 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
786#else 1160#else
787 fcntl (fd, F_SETFD, FD_CLOEXEC); 1161 fcntl (fd, F_SETFD, FD_CLOEXEC);
788 fcntl (fd, F_SETFL, O_NONBLOCK); 1162 fcntl (fd, F_SETFL, O_NONBLOCK);
789#endif 1163#endif
790} 1164}
791 1165
792static void noinline 1166static void noinline
793siginit (EV_P) 1167evpipe_init (EV_P)
794{ 1168{
1169 if (!ev_is_active (&pipe_w))
1170 {
1171#if EV_USE_EVENTFD
1172 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1173 if (evfd < 0 && errno == EINVAL)
1174 evfd = eventfd (0, 0);
1175
1176 if (evfd >= 0)
1177 {
1178 evpipe [0] = -1;
1179 fd_intern (evfd); /* doing it twice doesn't hurt */
1180 ev_io_set (&pipe_w, evfd, EV_READ);
1181 }
1182 else
1183#endif
1184 {
1185 while (pipe (evpipe))
1186 ev_syserr ("(libev) error creating signal/async pipe");
1187
795 fd_intern (sigpipe [0]); 1188 fd_intern (evpipe [0]);
796 fd_intern (sigpipe [1]); 1189 fd_intern (evpipe [1]);
1190 ev_io_set (&pipe_w, evpipe [0], EV_READ);
1191 }
797 1192
798 ev_io_set (&sigev, sigpipe [0], EV_READ);
799 ev_io_start (EV_A_ &sigev); 1193 ev_io_start (EV_A_ &pipe_w);
800 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1194 ev_unref (EV_A); /* watcher should not keep loop alive */
1195 }
1196}
1197
1198inline_size void
1199evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1200{
1201 if (!*flag)
1202 {
1203 int old_errno = errno; /* save errno because write might clobber it */
1204
1205 *flag = 1;
1206
1207#if EV_USE_EVENTFD
1208 if (evfd >= 0)
1209 {
1210 uint64_t counter = 1;
1211 write (evfd, &counter, sizeof (uint64_t));
1212 }
1213 else
1214#endif
1215 write (evpipe [1], &old_errno, 1);
1216
1217 errno = old_errno;
1218 }
1219}
1220
1221/* called whenever the libev signal pipe */
1222/* got some events (signal, async) */
1223static void
1224pipecb (EV_P_ ev_io *iow, int revents)
1225{
1226 int i;
1227
1228#if EV_USE_EVENTFD
1229 if (evfd >= 0)
1230 {
1231 uint64_t counter;
1232 read (evfd, &counter, sizeof (uint64_t));
1233 }
1234 else
1235#endif
1236 {
1237 char dummy;
1238 read (evpipe [0], &dummy, 1);
1239 }
1240
1241 if (sig_pending)
1242 {
1243 sig_pending = 0;
1244
1245 for (i = EV_NSIG - 1; i--; )
1246 if (expect_false (signals [i].pending))
1247 ev_feed_signal_event (EV_A_ i + 1);
1248 }
1249
1250#if EV_ASYNC_ENABLE
1251 if (async_pending)
1252 {
1253 async_pending = 0;
1254
1255 for (i = asynccnt; i--; )
1256 if (asyncs [i]->sent)
1257 {
1258 asyncs [i]->sent = 0;
1259 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1260 }
1261 }
1262#endif
801} 1263}
802 1264
803/*****************************************************************************/ 1265/*****************************************************************************/
804 1266
1267static void
1268ev_sighandler (int signum)
1269{
1270#if EV_MULTIPLICITY
1271 EV_P = signals [signum - 1].loop;
1272#endif
1273
1274#if _WIN32
1275 signal (signum, ev_sighandler);
1276#endif
1277
1278 signals [signum - 1].pending = 1;
1279 evpipe_write (EV_A_ &sig_pending);
1280}
1281
1282void noinline
1283ev_feed_signal_event (EV_P_ int signum)
1284{
1285 WL w;
1286
1287 if (expect_false (signum <= 0 || signum > EV_NSIG))
1288 return;
1289
1290 --signum;
1291
1292#if EV_MULTIPLICITY
1293 /* it is permissible to try to feed a signal to the wrong loop */
1294 /* or, likely more useful, feeding a signal nobody is waiting for */
1295
1296 if (expect_false (signals [signum].loop != EV_A))
1297 return;
1298#endif
1299
1300 signals [signum].pending = 0;
1301
1302 for (w = signals [signum].head; w; w = w->next)
1303 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1304}
1305
1306#if EV_USE_SIGNALFD
1307static void
1308sigfdcb (EV_P_ ev_io *iow, int revents)
1309{
1310 struct signalfd_siginfo si[2], *sip; /* these structs are big */
1311
1312 for (;;)
1313 {
1314 ssize_t res = read (sigfd, si, sizeof (si));
1315
1316 /* not ISO-C, as res might be -1, but works with SuS */
1317 for (sip = si; (char *)sip < (char *)si + res; ++sip)
1318 ev_feed_signal_event (EV_A_ sip->ssi_signo);
1319
1320 if (res < (ssize_t)sizeof (si))
1321 break;
1322 }
1323}
1324#endif
1325
1326/*****************************************************************************/
1327
805static WL childs [EV_PID_HASHSIZE]; 1328static WL childs [EV_PID_HASHSIZE];
806 1329
807#ifndef _WIN32 1330#ifndef _WIN32
808 1331
809static ev_signal childev; 1332static ev_signal childev;
810 1333
811void inline_speed 1334#ifndef WIFCONTINUED
1335# define WIFCONTINUED(status) 0
1336#endif
1337
1338/* handle a single child status event */
1339inline_speed void
812child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status) 1340child_reap (EV_P_ int chain, int pid, int status)
813{ 1341{
814 ev_child *w; 1342 ev_child *w;
1343 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
815 1344
816 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 1345 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
1346 {
817 if (w->pid == pid || !w->pid) 1347 if ((w->pid == pid || !w->pid)
1348 && (!traced || (w->flags & 1)))
818 { 1349 {
819 ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */ 1350 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
820 w->rpid = pid; 1351 w->rpid = pid;
821 w->rstatus = status; 1352 w->rstatus = status;
822 ev_feed_event (EV_A_ (W)w, EV_CHILD); 1353 ev_feed_event (EV_A_ (W)w, EV_CHILD);
823 } 1354 }
1355 }
824} 1356}
825 1357
826#ifndef WCONTINUED 1358#ifndef WCONTINUED
827# define WCONTINUED 0 1359# define WCONTINUED 0
828#endif 1360#endif
829 1361
1362/* called on sigchld etc., calls waitpid */
830static void 1363static void
831childcb (EV_P_ ev_signal *sw, int revents) 1364childcb (EV_P_ ev_signal *sw, int revents)
832{ 1365{
833 int pid, status; 1366 int pid, status;
834 1367
… …
837 if (!WCONTINUED 1370 if (!WCONTINUED
838 || errno != EINVAL 1371 || errno != EINVAL
839 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED))) 1372 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
840 return; 1373 return;
841 1374
842 /* make sure we are called again until all childs have been reaped */ 1375 /* make sure we are called again until all children have been reaped */
843 /* we need to do it this way so that the callback gets called before we continue */ 1376 /* we need to do it this way so that the callback gets called before we continue */
844 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 1377 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
845 1378
846 child_reap (EV_A_ sw, pid, pid, status); 1379 child_reap (EV_A_ pid, pid, status);
847 if (EV_PID_HASHSIZE > 1) 1380 if (EV_PID_HASHSIZE > 1)
848 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 1381 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
849} 1382}
850 1383
851#endif 1384#endif
852 1385
853/*****************************************************************************/ 1386/*****************************************************************************/
… …
915 /* kqueue is borked on everything but netbsd apparently */ 1448 /* kqueue is borked on everything but netbsd apparently */
916 /* it usually doesn't work correctly on anything but sockets and pipes */ 1449 /* it usually doesn't work correctly on anything but sockets and pipes */
917 flags &= ~EVBACKEND_KQUEUE; 1450 flags &= ~EVBACKEND_KQUEUE;
918#endif 1451#endif
919#ifdef __APPLE__ 1452#ifdef __APPLE__
920 // flags &= ~EVBACKEND_KQUEUE; for documentation 1453 /* only select works correctly on that "unix-certified" platform */
921 flags &= ~EVBACKEND_POLL; 1454 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1455 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
922#endif 1456#endif
923 1457
924 return flags; 1458 return flags;
925} 1459}
926 1460
927unsigned int 1461unsigned int
928ev_embeddable_backends (void) 1462ev_embeddable_backends (void)
929{ 1463{
930 return EVBACKEND_EPOLL 1464 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
931 | EVBACKEND_KQUEUE 1465
932 | EVBACKEND_PORT; 1466 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1467 /* please fix it and tell me how to detect the fix */
1468 flags &= ~EVBACKEND_EPOLL;
1469
1470 return flags;
933} 1471}
934 1472
935unsigned int 1473unsigned int
936ev_backend (EV_P) 1474ev_backend (EV_P)
937{ 1475{
938 return backend; 1476 return backend;
939} 1477}
940 1478
1479#if EV_MINIMAL < 2
941unsigned int 1480unsigned int
942ev_loop_count (EV_P) 1481ev_loop_count (EV_P)
943{ 1482{
944 return loop_count; 1483 return loop_count;
945} 1484}
946 1485
1486unsigned int
1487ev_loop_depth (EV_P)
1488{
1489 return loop_depth;
1490}
1491
1492void
1493ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1494{
1495 io_blocktime = interval;
1496}
1497
1498void
1499ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1500{
1501 timeout_blocktime = interval;
1502}
1503
1504void
1505ev_set_userdata (EV_P_ void *data)
1506{
1507 userdata = data;
1508}
1509
1510void *
1511ev_userdata (EV_P)
1512{
1513 return userdata;
1514}
1515
1516void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
1517{
1518 invoke_cb = invoke_pending_cb;
1519}
1520
1521void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
1522{
1523 release_cb = release;
1524 acquire_cb = acquire;
1525}
1526#endif
1527
1528/* initialise a loop structure, must be zero-initialised */
947static void noinline 1529static void noinline
948loop_init (EV_P_ unsigned int flags) 1530loop_init (EV_P_ unsigned int flags)
949{ 1531{
950 if (!backend) 1532 if (!backend)
951 { 1533 {
1534#if EV_USE_REALTIME
1535 if (!have_realtime)
1536 {
1537 struct timespec ts;
1538
1539 if (!clock_gettime (CLOCK_REALTIME, &ts))
1540 have_realtime = 1;
1541 }
1542#endif
1543
952#if EV_USE_MONOTONIC 1544#if EV_USE_MONOTONIC
1545 if (!have_monotonic)
953 { 1546 {
954 struct timespec ts; 1547 struct timespec ts;
1548
955 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1549 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
956 have_monotonic = 1; 1550 have_monotonic = 1;
957 } 1551 }
958#endif 1552#endif
959
960 ev_rt_now = ev_time ();
961 mn_now = get_clock ();
962 now_floor = mn_now;
963 rtmn_diff = ev_rt_now - mn_now;
964 1553
965 /* pid check not overridable via env */ 1554 /* pid check not overridable via env */
966#ifndef _WIN32 1555#ifndef _WIN32
967 if (flags & EVFLAG_FORKCHECK) 1556 if (flags & EVFLAG_FORKCHECK)
968 curpid = getpid (); 1557 curpid = getpid ();
… …
971 if (!(flags & EVFLAG_NOENV) 1560 if (!(flags & EVFLAG_NOENV)
972 && !enable_secure () 1561 && !enable_secure ()
973 && getenv ("LIBEV_FLAGS")) 1562 && getenv ("LIBEV_FLAGS"))
974 flags = atoi (getenv ("LIBEV_FLAGS")); 1563 flags = atoi (getenv ("LIBEV_FLAGS"));
975 1564
1565 ev_rt_now = ev_time ();
1566 mn_now = get_clock ();
1567 now_floor = mn_now;
1568 rtmn_diff = ev_rt_now - mn_now;
1569#if EV_MINIMAL < 2
1570 invoke_cb = ev_invoke_pending;
1571#endif
1572
1573 io_blocktime = 0.;
1574 timeout_blocktime = 0.;
1575 backend = 0;
1576 backend_fd = -1;
1577 sig_pending = 0;
1578#if EV_ASYNC_ENABLE
1579 async_pending = 0;
1580#endif
1581#if EV_USE_INOTIFY
1582 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1583#endif
1584#if EV_USE_SIGNALFD
1585 sigfd = flags & EVFLAG_NOSIGFD ? -1 : -2;
1586#endif
1587
976 if (!(flags & 0x0000ffffUL)) 1588 if (!(flags & 0x0000ffffU))
977 flags |= ev_recommended_backends (); 1589 flags |= ev_recommended_backends ();
978
979 backend = 0;
980 backend_fd = -1;
981#if EV_USE_INOTIFY
982 fs_fd = -2;
983#endif
984 1590
985#if EV_USE_PORT 1591#if EV_USE_PORT
986 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 1592 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
987#endif 1593#endif
988#if EV_USE_KQUEUE 1594#if EV_USE_KQUEUE
… …
996#endif 1602#endif
997#if EV_USE_SELECT 1603#if EV_USE_SELECT
998 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1604 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
999#endif 1605#endif
1000 1606
1607 ev_prepare_init (&pending_w, pendingcb);
1608
1001 ev_init (&sigev, sigcb); 1609 ev_init (&pipe_w, pipecb);
1002 ev_set_priority (&sigev, EV_MAXPRI); 1610 ev_set_priority (&pipe_w, EV_MAXPRI);
1003 } 1611 }
1004} 1612}
1005 1613
1614/* free up a loop structure */
1006static void noinline 1615static void noinline
1007loop_destroy (EV_P) 1616loop_destroy (EV_P)
1008{ 1617{
1009 int i; 1618 int i;
1619
1620 if (ev_is_active (&pipe_w))
1621 {
1622 /*ev_ref (EV_A);*/
1623 /*ev_io_stop (EV_A_ &pipe_w);*/
1624
1625#if EV_USE_EVENTFD
1626 if (evfd >= 0)
1627 close (evfd);
1628#endif
1629
1630 if (evpipe [0] >= 0)
1631 {
1632 EV_WIN32_CLOSE_FD (evpipe [0]);
1633 EV_WIN32_CLOSE_FD (evpipe [1]);
1634 }
1635 }
1636
1637#if EV_USE_SIGNALFD
1638 if (ev_is_active (&sigfd_w))
1639 {
1640 /*ev_ref (EV_A);*/
1641 /*ev_io_stop (EV_A_ &sigfd_w);*/
1642
1643 close (sigfd);
1644 }
1645#endif
1010 1646
1011#if EV_USE_INOTIFY 1647#if EV_USE_INOTIFY
1012 if (fs_fd >= 0) 1648 if (fs_fd >= 0)
1013 close (fs_fd); 1649 close (fs_fd);
1014#endif 1650#endif
… …
1038#if EV_IDLE_ENABLE 1674#if EV_IDLE_ENABLE
1039 array_free (idle, [i]); 1675 array_free (idle, [i]);
1040#endif 1676#endif
1041 } 1677 }
1042 1678
1043 ev_free (anfds); anfdmax = 0; 1679 ev_free (anfds); anfds = 0; anfdmax = 0;
1044 1680
1045 /* have to use the microsoft-never-gets-it-right macro */ 1681 /* have to use the microsoft-never-gets-it-right macro */
1682 array_free (rfeed, EMPTY);
1046 array_free (fdchange, EMPTY); 1683 array_free (fdchange, EMPTY);
1047 array_free (timer, EMPTY); 1684 array_free (timer, EMPTY);
1048#if EV_PERIODIC_ENABLE 1685#if EV_PERIODIC_ENABLE
1049 array_free (periodic, EMPTY); 1686 array_free (periodic, EMPTY);
1050#endif 1687#endif
1051#if EV_FORK_ENABLE 1688#if EV_FORK_ENABLE
1052 array_free (fork, EMPTY); 1689 array_free (fork, EMPTY);
1053#endif 1690#endif
1054 array_free (prepare, EMPTY); 1691 array_free (prepare, EMPTY);
1055 array_free (check, EMPTY); 1692 array_free (check, EMPTY);
1693#if EV_ASYNC_ENABLE
1694 array_free (async, EMPTY);
1695#endif
1056 1696
1057 backend = 0; 1697 backend = 0;
1058} 1698}
1059 1699
1700#if EV_USE_INOTIFY
1060void inline_size infy_fork (EV_P); 1701inline_size void infy_fork (EV_P);
1702#endif
1061 1703
1062void inline_size 1704inline_size void
1063loop_fork (EV_P) 1705loop_fork (EV_P)
1064{ 1706{
1065#if EV_USE_PORT 1707#if EV_USE_PORT
1066 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 1708 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1067#endif 1709#endif
… …
1073#endif 1715#endif
1074#if EV_USE_INOTIFY 1716#if EV_USE_INOTIFY
1075 infy_fork (EV_A); 1717 infy_fork (EV_A);
1076#endif 1718#endif
1077 1719
1078 if (ev_is_active (&sigev)) 1720 if (ev_is_active (&pipe_w))
1079 { 1721 {
1080 /* default loop */ 1722 /* this "locks" the handlers against writing to the pipe */
1723 /* while we modify the fd vars */
1724 sig_pending = 1;
1725#if EV_ASYNC_ENABLE
1726 async_pending = 1;
1727#endif
1081 1728
1082 ev_ref (EV_A); 1729 ev_ref (EV_A);
1083 ev_io_stop (EV_A_ &sigev); 1730 ev_io_stop (EV_A_ &pipe_w);
1084 close (sigpipe [0]);
1085 close (sigpipe [1]);
1086 1731
1087 while (pipe (sigpipe)) 1732#if EV_USE_EVENTFD
1088 syserr ("(libev) error creating pipe"); 1733 if (evfd >= 0)
1734 close (evfd);
1735#endif
1089 1736
1737 if (evpipe [0] >= 0)
1738 {
1739 EV_WIN32_CLOSE_FD (evpipe [0]);
1740 EV_WIN32_CLOSE_FD (evpipe [1]);
1741 }
1742
1090 siginit (EV_A); 1743 evpipe_init (EV_A);
1744 /* now iterate over everything, in case we missed something */
1745 pipecb (EV_A_ &pipe_w, EV_READ);
1091 } 1746 }
1092 1747
1093 postfork = 0; 1748 postfork = 0;
1094} 1749}
1095 1750
1096#if EV_MULTIPLICITY 1751#if EV_MULTIPLICITY
1752
1097struct ev_loop * 1753struct ev_loop *
1098ev_loop_new (unsigned int flags) 1754ev_loop_new (unsigned int flags)
1099{ 1755{
1100 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 1756 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1101 1757
1102 memset (loop, 0, sizeof (struct ev_loop)); 1758 memset (EV_A, 0, sizeof (struct ev_loop));
1103
1104 loop_init (EV_A_ flags); 1759 loop_init (EV_A_ flags);
1105 1760
1106 if (ev_backend (EV_A)) 1761 if (ev_backend (EV_A))
1107 return loop; 1762 return EV_A;
1108 1763
1109 return 0; 1764 return 0;
1110} 1765}
1111 1766
1112void 1767void
… …
1117} 1772}
1118 1773
1119void 1774void
1120ev_loop_fork (EV_P) 1775ev_loop_fork (EV_P)
1121{ 1776{
1122 postfork = 1; 1777 postfork = 1; /* must be in line with ev_default_fork */
1123} 1778}
1779#endif /* multiplicity */
1124 1780
1781#if EV_VERIFY
1782static void noinline
1783verify_watcher (EV_P_ W w)
1784{
1785 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1786
1787 if (w->pending)
1788 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1789}
1790
1791static void noinline
1792verify_heap (EV_P_ ANHE *heap, int N)
1793{
1794 int i;
1795
1796 for (i = HEAP0; i < N + HEAP0; ++i)
1797 {
1798 assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
1799 assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
1800 assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
1801
1802 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1803 }
1804}
1805
1806static void noinline
1807array_verify (EV_P_ W *ws, int cnt)
1808{
1809 while (cnt--)
1810 {
1811 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1812 verify_watcher (EV_A_ ws [cnt]);
1813 }
1814}
1815#endif
1816
1817#if EV_MINIMAL < 2
1818void
1819ev_loop_verify (EV_P)
1820{
1821#if EV_VERIFY
1822 int i;
1823 WL w;
1824
1825 assert (activecnt >= -1);
1826
1827 assert (fdchangemax >= fdchangecnt);
1828 for (i = 0; i < fdchangecnt; ++i)
1829 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1830
1831 assert (anfdmax >= 0);
1832 for (i = 0; i < anfdmax; ++i)
1833 for (w = anfds [i].head; w; w = w->next)
1834 {
1835 verify_watcher (EV_A_ (W)w);
1836 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1837 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1838 }
1839
1840 assert (timermax >= timercnt);
1841 verify_heap (EV_A_ timers, timercnt);
1842
1843#if EV_PERIODIC_ENABLE
1844 assert (periodicmax >= periodiccnt);
1845 verify_heap (EV_A_ periodics, periodiccnt);
1846#endif
1847
1848 for (i = NUMPRI; i--; )
1849 {
1850 assert (pendingmax [i] >= pendingcnt [i]);
1851#if EV_IDLE_ENABLE
1852 assert (idleall >= 0);
1853 assert (idlemax [i] >= idlecnt [i]);
1854 array_verify (EV_A_ (W *)idles [i], idlecnt [i]);
1855#endif
1856 }
1857
1858#if EV_FORK_ENABLE
1859 assert (forkmax >= forkcnt);
1860 array_verify (EV_A_ (W *)forks, forkcnt);
1861#endif
1862
1863#if EV_ASYNC_ENABLE
1864 assert (asyncmax >= asynccnt);
1865 array_verify (EV_A_ (W *)asyncs, asynccnt);
1866#endif
1867
1868 assert (preparemax >= preparecnt);
1869 array_verify (EV_A_ (W *)prepares, preparecnt);
1870
1871 assert (checkmax >= checkcnt);
1872 array_verify (EV_A_ (W *)checks, checkcnt);
1873
1874# if 0
1875 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
1876 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
1877# endif
1878#endif
1879}
1125#endif 1880#endif
1126 1881
1127#if EV_MULTIPLICITY 1882#if EV_MULTIPLICITY
1128struct ev_loop * 1883struct ev_loop *
1129ev_default_loop_init (unsigned int flags) 1884ev_default_loop_init (unsigned int flags)
1130#else 1885#else
1131int 1886int
1132ev_default_loop (unsigned int flags) 1887ev_default_loop (unsigned int flags)
1133#endif 1888#endif
1134{ 1889{
1135 if (sigpipe [0] == sigpipe [1])
1136 if (pipe (sigpipe))
1137 return 0;
1138
1139 if (!ev_default_loop_ptr) 1890 if (!ev_default_loop_ptr)
1140 { 1891 {
1141#if EV_MULTIPLICITY 1892#if EV_MULTIPLICITY
1142 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 1893 EV_P = ev_default_loop_ptr = &default_loop_struct;
1143#else 1894#else
1144 ev_default_loop_ptr = 1; 1895 ev_default_loop_ptr = 1;
1145#endif 1896#endif
1146 1897
1147 loop_init (EV_A_ flags); 1898 loop_init (EV_A_ flags);
1148 1899
1149 if (ev_backend (EV_A)) 1900 if (ev_backend (EV_A))
1150 { 1901 {
1151 siginit (EV_A);
1152
1153#ifndef _WIN32 1902#ifndef _WIN32
1154 ev_signal_init (&childev, childcb, SIGCHLD); 1903 ev_signal_init (&childev, childcb, SIGCHLD);
1155 ev_set_priority (&childev, EV_MAXPRI); 1904 ev_set_priority (&childev, EV_MAXPRI);
1156 ev_signal_start (EV_A_ &childev); 1905 ev_signal_start (EV_A_ &childev);
1157 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1906 ev_unref (EV_A); /* child watcher should not keep loop alive */
… …
1166 1915
1167void 1916void
1168ev_default_destroy (void) 1917ev_default_destroy (void)
1169{ 1918{
1170#if EV_MULTIPLICITY 1919#if EV_MULTIPLICITY
1171 struct ev_loop *loop = ev_default_loop_ptr; 1920 EV_P = ev_default_loop_ptr;
1172#endif 1921#endif
1922
1923 ev_default_loop_ptr = 0;
1173 1924
1174#ifndef _WIN32 1925#ifndef _WIN32
1175 ev_ref (EV_A); /* child watcher */ 1926 ev_ref (EV_A); /* child watcher */
1176 ev_signal_stop (EV_A_ &childev); 1927 ev_signal_stop (EV_A_ &childev);
1177#endif 1928#endif
1178 1929
1179 ev_ref (EV_A); /* signal watcher */
1180 ev_io_stop (EV_A_ &sigev);
1181
1182 close (sigpipe [0]); sigpipe [0] = 0;
1183 close (sigpipe [1]); sigpipe [1] = 0;
1184
1185 loop_destroy (EV_A); 1930 loop_destroy (EV_A);
1186} 1931}
1187 1932
1188void 1933void
1189ev_default_fork (void) 1934ev_default_fork (void)
1190{ 1935{
1191#if EV_MULTIPLICITY 1936#if EV_MULTIPLICITY
1192 struct ev_loop *loop = ev_default_loop_ptr; 1937 EV_P = ev_default_loop_ptr;
1193#endif 1938#endif
1194 1939
1195 if (backend) 1940 postfork = 1; /* must be in line with ev_loop_fork */
1196 postfork = 1;
1197} 1941}
1198 1942
1199/*****************************************************************************/ 1943/*****************************************************************************/
1200 1944
1201void 1945void
1202ev_invoke (EV_P_ void *w, int revents) 1946ev_invoke (EV_P_ void *w, int revents)
1203{ 1947{
1204 EV_CB_INVOKE ((W)w, revents); 1948 EV_CB_INVOKE ((W)w, revents);
1205} 1949}
1206 1950
1207void inline_speed 1951unsigned int
1208call_pending (EV_P) 1952ev_pending_count (EV_P)
1953{
1954 int pri;
1955 unsigned int count = 0;
1956
1957 for (pri = NUMPRI; pri--; )
1958 count += pendingcnt [pri];
1959
1960 return count;
1961}
1962
1963void noinline
1964ev_invoke_pending (EV_P)
1209{ 1965{
1210 int pri; 1966 int pri;
1211 1967
1212 for (pri = NUMPRI; pri--; ) 1968 for (pri = NUMPRI; pri--; )
1213 while (pendingcnt [pri]) 1969 while (pendingcnt [pri])
1214 { 1970 {
1215 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 1971 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1216 1972
1217 if (expect_true (p->w))
1218 {
1219 /*assert (("non-pending watcher on pending list", p->w->pending));*/ 1973 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
1974 /* ^ this is no longer true, as pending_w could be here */
1220 1975
1221 p->w->pending = 0; 1976 p->w->pending = 0;
1222 EV_CB_INVOKE (p->w, p->events); 1977 EV_CB_INVOKE (p->w, p->events);
1223 } 1978 EV_FREQUENT_CHECK;
1224 } 1979 }
1225} 1980}
1226 1981
1227void inline_size
1228timers_reify (EV_P)
1229{
1230 while (timercnt && ((WT)timers [0])->at <= mn_now)
1231 {
1232 ev_timer *w = (ev_timer *)timers [0];
1233
1234 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1235
1236 /* first reschedule or stop timer */
1237 if (w->repeat)
1238 {
1239 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1240
1241 ((WT)w)->at += w->repeat;
1242 if (((WT)w)->at < mn_now)
1243 ((WT)w)->at = mn_now;
1244
1245 downheap (timers, timercnt, 0);
1246 }
1247 else
1248 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1249
1250 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1251 }
1252}
1253
1254#if EV_PERIODIC_ENABLE
1255void inline_size
1256periodics_reify (EV_P)
1257{
1258 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1259 {
1260 ev_periodic *w = (ev_periodic *)periodics [0];
1261
1262 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1263
1264 /* first reschedule or stop timer */
1265 if (w->reschedule_cb)
1266 {
1267 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1268 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1269 downheap (periodics, periodiccnt, 0);
1270 }
1271 else if (w->interval)
1272 {
1273 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1274 if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
1275 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1276 downheap (periodics, periodiccnt, 0);
1277 }
1278 else
1279 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1280
1281 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1282 }
1283}
1284
1285static void noinline
1286periodics_reschedule (EV_P)
1287{
1288 int i;
1289
1290 /* adjust periodics after time jump */
1291 for (i = 0; i < periodiccnt; ++i)
1292 {
1293 ev_periodic *w = (ev_periodic *)periodics [i];
1294
1295 if (w->reschedule_cb)
1296 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1297 else if (w->interval)
1298 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1299 }
1300
1301 /* now rebuild the heap */
1302 for (i = periodiccnt >> 1; i--; )
1303 downheap (periodics, periodiccnt, i);
1304}
1305#endif
1306
1307#if EV_IDLE_ENABLE 1982#if EV_IDLE_ENABLE
1308void inline_size 1983/* make idle watchers pending. this handles the "call-idle */
1984/* only when higher priorities are idle" logic */
1985inline_size void
1309idle_reify (EV_P) 1986idle_reify (EV_P)
1310{ 1987{
1311 if (expect_false (idleall)) 1988 if (expect_false (idleall))
1312 { 1989 {
1313 int pri; 1990 int pri;
… …
1325 } 2002 }
1326 } 2003 }
1327} 2004}
1328#endif 2005#endif
1329 2006
1330void inline_speed 2007/* make timers pending */
2008inline_size void
2009timers_reify (EV_P)
2010{
2011 EV_FREQUENT_CHECK;
2012
2013 if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
2014 {
2015 do
2016 {
2017 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
2018
2019 /*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
2020
2021 /* first reschedule or stop timer */
2022 if (w->repeat)
2023 {
2024 ev_at (w) += w->repeat;
2025 if (ev_at (w) < mn_now)
2026 ev_at (w) = mn_now;
2027
2028 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
2029
2030 ANHE_at_cache (timers [HEAP0]);
2031 downheap (timers, timercnt, HEAP0);
2032 }
2033 else
2034 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
2035
2036 EV_FREQUENT_CHECK;
2037 feed_reverse (EV_A_ (W)w);
2038 }
2039 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
2040
2041 feed_reverse_done (EV_A_ EV_TIMEOUT);
2042 }
2043}
2044
2045#if EV_PERIODIC_ENABLE
2046/* make periodics pending */
2047inline_size void
2048periodics_reify (EV_P)
2049{
2050 EV_FREQUENT_CHECK;
2051
2052 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2053 {
2054 int feed_count = 0;
2055
2056 do
2057 {
2058 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2059
2060 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
2061
2062 /* first reschedule or stop timer */
2063 if (w->reschedule_cb)
2064 {
2065 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2066
2067 assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
2068
2069 ANHE_at_cache (periodics [HEAP0]);
2070 downheap (periodics, periodiccnt, HEAP0);
2071 }
2072 else if (w->interval)
2073 {
2074 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2075 /* if next trigger time is not sufficiently in the future, put it there */
2076 /* this might happen because of floating point inexactness */
2077 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2078 {
2079 ev_at (w) += w->interval;
2080
2081 /* if interval is unreasonably low we might still have a time in the past */
2082 /* so correct this. this will make the periodic very inexact, but the user */
2083 /* has effectively asked to get triggered more often than possible */
2084 if (ev_at (w) < ev_rt_now)
2085 ev_at (w) = ev_rt_now;
2086 }
2087
2088 ANHE_at_cache (periodics [HEAP0]);
2089 downheap (periodics, periodiccnt, HEAP0);
2090 }
2091 else
2092 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
2093
2094 EV_FREQUENT_CHECK;
2095 feed_reverse (EV_A_ (W)w);
2096 }
2097 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
2098
2099 feed_reverse_done (EV_A_ EV_PERIODIC);
2100 }
2101}
2102
2103/* simply recalculate all periodics */
2104/* TODO: maybe ensure that at leats one event happens when jumping forward? */
2105static void noinline
2106periodics_reschedule (EV_P)
2107{
2108 int i;
2109
2110 /* adjust periodics after time jump */
2111 for (i = HEAP0; i < periodiccnt + HEAP0; ++i)
2112 {
2113 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2114
2115 if (w->reschedule_cb)
2116 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2117 else if (w->interval)
2118 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2119
2120 ANHE_at_cache (periodics [i]);
2121 }
2122
2123 reheap (periodics, periodiccnt);
2124}
2125#endif
2126
2127/* adjust all timers by a given offset */
2128static void noinline
2129timers_reschedule (EV_P_ ev_tstamp adjust)
2130{
2131 int i;
2132
2133 for (i = 0; i < timercnt; ++i)
2134 {
2135 ANHE *he = timers + i + HEAP0;
2136 ANHE_w (*he)->at += adjust;
2137 ANHE_at_cache (*he);
2138 }
2139}
2140
2141/* fetch new monotonic and realtime times from the kernel */
2142/* also detetc if there was a timejump, and act accordingly */
2143inline_speed void
1331time_update (EV_P_ ev_tstamp max_block) 2144time_update (EV_P_ ev_tstamp max_block)
1332{ 2145{
1333 int i;
1334
1335#if EV_USE_MONOTONIC 2146#if EV_USE_MONOTONIC
1336 if (expect_true (have_monotonic)) 2147 if (expect_true (have_monotonic))
1337 { 2148 {
2149 int i;
1338 ev_tstamp odiff = rtmn_diff; 2150 ev_tstamp odiff = rtmn_diff;
1339 2151
1340 mn_now = get_clock (); 2152 mn_now = get_clock ();
1341 2153
1342 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 2154 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
… …
1360 */ 2172 */
1361 for (i = 4; --i; ) 2173 for (i = 4; --i; )
1362 { 2174 {
1363 rtmn_diff = ev_rt_now - mn_now; 2175 rtmn_diff = ev_rt_now - mn_now;
1364 2176
1365 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) 2177 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP))
1366 return; /* all is well */ 2178 return; /* all is well */
1367 2179
1368 ev_rt_now = ev_time (); 2180 ev_rt_now = ev_time ();
1369 mn_now = get_clock (); 2181 mn_now = get_clock ();
1370 now_floor = mn_now; 2182 now_floor = mn_now;
1371 } 2183 }
1372 2184
2185 /* no timer adjustment, as the monotonic clock doesn't jump */
2186 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1373# if EV_PERIODIC_ENABLE 2187# if EV_PERIODIC_ENABLE
1374 periodics_reschedule (EV_A); 2188 periodics_reschedule (EV_A);
1375# endif 2189# endif
1376 /* no timer adjustment, as the monotonic clock doesn't jump */
1377 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1378 } 2190 }
1379 else 2191 else
1380#endif 2192#endif
1381 { 2193 {
1382 ev_rt_now = ev_time (); 2194 ev_rt_now = ev_time ();
1383 2195
1384 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 2196 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1385 { 2197 {
2198 /* adjust timers. this is easy, as the offset is the same for all of them */
2199 timers_reschedule (EV_A_ ev_rt_now - mn_now);
1386#if EV_PERIODIC_ENABLE 2200#if EV_PERIODIC_ENABLE
1387 periodics_reschedule (EV_A); 2201 periodics_reschedule (EV_A);
1388#endif 2202#endif
1389 /* adjust timers. this is easy, as the offset is the same for all of them */
1390 for (i = 0; i < timercnt; ++i)
1391 ((WT)timers [i])->at += ev_rt_now - mn_now;
1392 } 2203 }
1393 2204
1394 mn_now = ev_rt_now; 2205 mn_now = ev_rt_now;
1395 } 2206 }
1396} 2207}
1397 2208
1398void 2209void
1399ev_ref (EV_P)
1400{
1401 ++activecnt;
1402}
1403
1404void
1405ev_unref (EV_P)
1406{
1407 --activecnt;
1408}
1409
1410static int loop_done;
1411
1412void
1413ev_loop (EV_P_ int flags) 2210ev_loop (EV_P_ int flags)
1414{ 2211{
1415 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) 2212#if EV_MINIMAL < 2
1416 ? EVUNLOOP_ONE 2213 ++loop_depth;
1417 : EVUNLOOP_CANCEL; 2214#endif
1418 2215
2216 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE));
2217
2218 loop_done = EVUNLOOP_CANCEL;
2219
1419 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 2220 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1420 2221
1421 do 2222 do
1422 { 2223 {
2224#if EV_VERIFY >= 2
2225 ev_loop_verify (EV_A);
2226#endif
2227
1423#ifndef _WIN32 2228#ifndef _WIN32
1424 if (expect_false (curpid)) /* penalise the forking check even more */ 2229 if (expect_false (curpid)) /* penalise the forking check even more */
1425 if (expect_false (getpid () != curpid)) 2230 if (expect_false (getpid () != curpid))
1426 { 2231 {
1427 curpid = getpid (); 2232 curpid = getpid ();
… …
1433 /* we might have forked, so queue fork handlers */ 2238 /* we might have forked, so queue fork handlers */
1434 if (expect_false (postfork)) 2239 if (expect_false (postfork))
1435 if (forkcnt) 2240 if (forkcnt)
1436 { 2241 {
1437 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2242 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1438 call_pending (EV_A); 2243 EV_INVOKE_PENDING;
1439 } 2244 }
1440#endif 2245#endif
1441 2246
1442 /* queue prepare watchers (and execute them) */ 2247 /* queue prepare watchers (and execute them) */
1443 if (expect_false (preparecnt)) 2248 if (expect_false (preparecnt))
1444 { 2249 {
1445 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2250 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1446 call_pending (EV_A); 2251 EV_INVOKE_PENDING;
1447 } 2252 }
1448 2253
1449 if (expect_false (!activecnt)) 2254 if (expect_false (loop_done))
1450 break; 2255 break;
1451 2256
1452 /* we might have forked, so reify kernel state if necessary */ 2257 /* we might have forked, so reify kernel state if necessary */
1453 if (expect_false (postfork)) 2258 if (expect_false (postfork))
1454 loop_fork (EV_A); 2259 loop_fork (EV_A);
… …
1456 /* update fd-related kernel structures */ 2261 /* update fd-related kernel structures */
1457 fd_reify (EV_A); 2262 fd_reify (EV_A);
1458 2263
1459 /* calculate blocking time */ 2264 /* calculate blocking time */
1460 { 2265 {
1461 ev_tstamp block; 2266 ev_tstamp waittime = 0.;
2267 ev_tstamp sleeptime = 0.;
1462 2268
1463 if (expect_false (flags & EVLOOP_NONBLOCK || idleall || !activecnt)) 2269 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1464 block = 0.; /* do not block at all */
1465 else
1466 { 2270 {
2271 /* remember old timestamp for io_blocktime calculation */
2272 ev_tstamp prev_mn_now = mn_now;
2273
1467 /* update time to cancel out callback processing overhead */ 2274 /* update time to cancel out callback processing overhead */
1468 time_update (EV_A_ 1e100); 2275 time_update (EV_A_ 1e100);
1469 2276
1470 block = MAX_BLOCKTIME; 2277 waittime = MAX_BLOCKTIME;
1471 2278
1472 if (timercnt) 2279 if (timercnt)
1473 { 2280 {
1474 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge; 2281 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
1475 if (block > to) block = to; 2282 if (waittime > to) waittime = to;
1476 } 2283 }
1477 2284
1478#if EV_PERIODIC_ENABLE 2285#if EV_PERIODIC_ENABLE
1479 if (periodiccnt) 2286 if (periodiccnt)
1480 { 2287 {
1481 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge; 2288 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1482 if (block > to) block = to; 2289 if (waittime > to) waittime = to;
1483 } 2290 }
1484#endif 2291#endif
1485 2292
2293 /* don't let timeouts decrease the waittime below timeout_blocktime */
2294 if (expect_false (waittime < timeout_blocktime))
2295 waittime = timeout_blocktime;
2296
2297 /* extra check because io_blocktime is commonly 0 */
1486 if (expect_false (block < 0.)) block = 0.; 2298 if (expect_false (io_blocktime))
2299 {
2300 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2301
2302 if (sleeptime > waittime - backend_fudge)
2303 sleeptime = waittime - backend_fudge;
2304
2305 if (expect_true (sleeptime > 0.))
2306 {
2307 ev_sleep (sleeptime);
2308 waittime -= sleeptime;
2309 }
2310 }
1487 } 2311 }
1488 2312
2313#if EV_MINIMAL < 2
1489 ++loop_count; 2314 ++loop_count;
2315#endif
2316 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */
1490 backend_poll (EV_A_ block); 2317 backend_poll (EV_A_ waittime);
2318 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */
1491 2319
1492 /* update ev_rt_now, do magic */ 2320 /* update ev_rt_now, do magic */
1493 time_update (EV_A_ block); 2321 time_update (EV_A_ waittime + sleeptime);
1494 } 2322 }
1495 2323
1496 /* queue pending timers and reschedule them */ 2324 /* queue pending timers and reschedule them */
1497 timers_reify (EV_A); /* relative timers called last */ 2325 timers_reify (EV_A); /* relative timers called last */
1498#if EV_PERIODIC_ENABLE 2326#if EV_PERIODIC_ENABLE
… …
1506 2334
1507 /* queue check watchers, to be executed first */ 2335 /* queue check watchers, to be executed first */
1508 if (expect_false (checkcnt)) 2336 if (expect_false (checkcnt))
1509 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2337 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1510 2338
1511 call_pending (EV_A); 2339 EV_INVOKE_PENDING;
1512
1513 } 2340 }
1514 while (expect_true (activecnt && !loop_done)); 2341 while (expect_true (
2342 activecnt
2343 && !loop_done
2344 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
2345 ));
1515 2346
1516 if (loop_done == EVUNLOOP_ONE) 2347 if (loop_done == EVUNLOOP_ONE)
1517 loop_done = EVUNLOOP_CANCEL; 2348 loop_done = EVUNLOOP_CANCEL;
2349
2350#if EV_MINIMAL < 2
2351 --loop_depth;
2352#endif
1518} 2353}
1519 2354
1520void 2355void
1521ev_unloop (EV_P_ int how) 2356ev_unloop (EV_P_ int how)
1522{ 2357{
1523 loop_done = how; 2358 loop_done = how;
1524} 2359}
1525 2360
2361void
2362ev_ref (EV_P)
2363{
2364 ++activecnt;
2365}
2366
2367void
2368ev_unref (EV_P)
2369{
2370 --activecnt;
2371}
2372
2373void
2374ev_now_update (EV_P)
2375{
2376 time_update (EV_A_ 1e100);
2377}
2378
2379void
2380ev_suspend (EV_P)
2381{
2382 ev_now_update (EV_A);
2383}
2384
2385void
2386ev_resume (EV_P)
2387{
2388 ev_tstamp mn_prev = mn_now;
2389
2390 ev_now_update (EV_A);
2391 timers_reschedule (EV_A_ mn_now - mn_prev);
2392#if EV_PERIODIC_ENABLE
2393 /* TODO: really do this? */
2394 periodics_reschedule (EV_A);
2395#endif
2396}
2397
1526/*****************************************************************************/ 2398/*****************************************************************************/
2399/* singly-linked list management, used when the expected list length is short */
1527 2400
1528void inline_size 2401inline_size void
1529wlist_add (WL *head, WL elem) 2402wlist_add (WL *head, WL elem)
1530{ 2403{
1531 elem->next = *head; 2404 elem->next = *head;
1532 *head = elem; 2405 *head = elem;
1533} 2406}
1534 2407
1535void inline_size 2408inline_size void
1536wlist_del (WL *head, WL elem) 2409wlist_del (WL *head, WL elem)
1537{ 2410{
1538 while (*head) 2411 while (*head)
1539 { 2412 {
1540 if (*head == elem) 2413 if (expect_true (*head == elem))
1541 { 2414 {
1542 *head = elem->next; 2415 *head = elem->next;
1543 return; 2416 break;
1544 } 2417 }
1545 2418
1546 head = &(*head)->next; 2419 head = &(*head)->next;
1547 } 2420 }
1548} 2421}
1549 2422
1550void inline_speed 2423/* internal, faster, version of ev_clear_pending */
2424inline_speed void
1551clear_pending (EV_P_ W w) 2425clear_pending (EV_P_ W w)
1552{ 2426{
1553 if (w->pending) 2427 if (w->pending)
1554 { 2428 {
1555 pendings [ABSPRI (w)][w->pending - 1].w = 0; 2429 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
1556 w->pending = 0; 2430 w->pending = 0;
1557 } 2431 }
1558} 2432}
1559 2433
1560int 2434int
… …
1564 int pending = w_->pending; 2438 int pending = w_->pending;
1565 2439
1566 if (expect_true (pending)) 2440 if (expect_true (pending))
1567 { 2441 {
1568 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 2442 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2443 p->w = (W)&pending_w;
1569 w_->pending = 0; 2444 w_->pending = 0;
1570 p->w = 0;
1571 return p->events; 2445 return p->events;
1572 } 2446 }
1573 else 2447 else
1574 return 0; 2448 return 0;
1575} 2449}
1576 2450
1577void inline_size 2451inline_size void
1578pri_adjust (EV_P_ W w) 2452pri_adjust (EV_P_ W w)
1579{ 2453{
1580 int pri = w->priority; 2454 int pri = ev_priority (w);
1581 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 2455 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1582 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 2456 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1583 w->priority = pri; 2457 ev_set_priority (w, pri);
1584} 2458}
1585 2459
1586void inline_speed 2460inline_speed void
1587ev_start (EV_P_ W w, int active) 2461ev_start (EV_P_ W w, int active)
1588{ 2462{
1589 pri_adjust (EV_A_ w); 2463 pri_adjust (EV_A_ w);
1590 w->active = active; 2464 w->active = active;
1591 ev_ref (EV_A); 2465 ev_ref (EV_A);
1592} 2466}
1593 2467
1594void inline_size 2468inline_size void
1595ev_stop (EV_P_ W w) 2469ev_stop (EV_P_ W w)
1596{ 2470{
1597 ev_unref (EV_A); 2471 ev_unref (EV_A);
1598 w->active = 0; 2472 w->active = 0;
1599} 2473}
… …
1606 int fd = w->fd; 2480 int fd = w->fd;
1607 2481
1608 if (expect_false (ev_is_active (w))) 2482 if (expect_false (ev_is_active (w)))
1609 return; 2483 return;
1610 2484
1611 assert (("ev_io_start called with negative fd", fd >= 0)); 2485 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2486 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2487
2488 EV_FREQUENT_CHECK;
1612 2489
1613 ev_start (EV_A_ (W)w, 1); 2490 ev_start (EV_A_ (W)w, 1);
1614 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 2491 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
1615 wlist_add (&anfds[fd].head, (WL)w); 2492 wlist_add (&anfds[fd].head, (WL)w);
1616 2493
1617 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1); 2494 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
1618 w->events &= ~EV_IOFDSET; 2495 w->events &= ~EV__IOFDSET;
2496
2497 EV_FREQUENT_CHECK;
1619} 2498}
1620 2499
1621void noinline 2500void noinline
1622ev_io_stop (EV_P_ ev_io *w) 2501ev_io_stop (EV_P_ ev_io *w)
1623{ 2502{
1624 clear_pending (EV_A_ (W)w); 2503 clear_pending (EV_A_ (W)w);
1625 if (expect_false (!ev_is_active (w))) 2504 if (expect_false (!ev_is_active (w)))
1626 return; 2505 return;
1627 2506
1628 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 2507 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2508
2509 EV_FREQUENT_CHECK;
1629 2510
1630 wlist_del (&anfds[w->fd].head, (WL)w); 2511 wlist_del (&anfds[w->fd].head, (WL)w);
1631 ev_stop (EV_A_ (W)w); 2512 ev_stop (EV_A_ (W)w);
1632 2513
1633 fd_change (EV_A_ w->fd, 1); 2514 fd_change (EV_A_ w->fd, 1);
2515
2516 EV_FREQUENT_CHECK;
1634} 2517}
1635 2518
1636void noinline 2519void noinline
1637ev_timer_start (EV_P_ ev_timer *w) 2520ev_timer_start (EV_P_ ev_timer *w)
1638{ 2521{
1639 if (expect_false (ev_is_active (w))) 2522 if (expect_false (ev_is_active (w)))
1640 return; 2523 return;
1641 2524
1642 ((WT)w)->at += mn_now; 2525 ev_at (w) += mn_now;
1643 2526
1644 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 2527 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1645 2528
2529 EV_FREQUENT_CHECK;
2530
2531 ++timercnt;
1646 ev_start (EV_A_ (W)w, ++timercnt); 2532 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
1647 array_needsize (WT, timers, timermax, timercnt, EMPTY2); 2533 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);
1648 timers [timercnt - 1] = (WT)w; 2534 ANHE_w (timers [ev_active (w)]) = (WT)w;
1649 upheap (timers, timercnt - 1); 2535 ANHE_at_cache (timers [ev_active (w)]);
2536 upheap (timers, ev_active (w));
1650 2537
2538 EV_FREQUENT_CHECK;
2539
1651 /*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/ 2540 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
1652} 2541}
1653 2542
1654void noinline 2543void noinline
1655ev_timer_stop (EV_P_ ev_timer *w) 2544ev_timer_stop (EV_P_ ev_timer *w)
1656{ 2545{
1657 clear_pending (EV_A_ (W)w); 2546 clear_pending (EV_A_ (W)w);
1658 if (expect_false (!ev_is_active (w))) 2547 if (expect_false (!ev_is_active (w)))
1659 return; 2548 return;
1660 2549
1661 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w)); 2550 EV_FREQUENT_CHECK;
1662 2551
1663 { 2552 {
1664 int active = ((W)w)->active; 2553 int active = ev_active (w);
1665 2554
2555 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2556
2557 --timercnt;
2558
1666 if (expect_true (--active < --timercnt)) 2559 if (expect_true (active < timercnt + HEAP0))
1667 { 2560 {
1668 timers [active] = timers [timercnt]; 2561 timers [active] = timers [timercnt + HEAP0];
1669 adjustheap (timers, timercnt, active); 2562 adjustheap (timers, timercnt, active);
1670 } 2563 }
1671 } 2564 }
1672 2565
1673 ((WT)w)->at -= mn_now; 2566 EV_FREQUENT_CHECK;
2567
2568 ev_at (w) -= mn_now;
1674 2569
1675 ev_stop (EV_A_ (W)w); 2570 ev_stop (EV_A_ (W)w);
1676} 2571}
1677 2572
1678void noinline 2573void noinline
1679ev_timer_again (EV_P_ ev_timer *w) 2574ev_timer_again (EV_P_ ev_timer *w)
1680{ 2575{
2576 EV_FREQUENT_CHECK;
2577
1681 if (ev_is_active (w)) 2578 if (ev_is_active (w))
1682 { 2579 {
1683 if (w->repeat) 2580 if (w->repeat)
1684 { 2581 {
1685 ((WT)w)->at = mn_now + w->repeat; 2582 ev_at (w) = mn_now + w->repeat;
2583 ANHE_at_cache (timers [ev_active (w)]);
1686 adjustheap (timers, timercnt, ((W)w)->active - 1); 2584 adjustheap (timers, timercnt, ev_active (w));
1687 } 2585 }
1688 else 2586 else
1689 ev_timer_stop (EV_A_ w); 2587 ev_timer_stop (EV_A_ w);
1690 } 2588 }
1691 else if (w->repeat) 2589 else if (w->repeat)
1692 { 2590 {
1693 w->at = w->repeat; 2591 ev_at (w) = w->repeat;
1694 ev_timer_start (EV_A_ w); 2592 ev_timer_start (EV_A_ w);
1695 } 2593 }
2594
2595 EV_FREQUENT_CHECK;
2596}
2597
2598ev_tstamp
2599ev_timer_remaining (EV_P_ ev_timer *w)
2600{
2601 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
1696} 2602}
1697 2603
1698#if EV_PERIODIC_ENABLE 2604#if EV_PERIODIC_ENABLE
1699void noinline 2605void noinline
1700ev_periodic_start (EV_P_ ev_periodic *w) 2606ev_periodic_start (EV_P_ ev_periodic *w)
1701{ 2607{
1702 if (expect_false (ev_is_active (w))) 2608 if (expect_false (ev_is_active (w)))
1703 return; 2609 return;
1704 2610
1705 if (w->reschedule_cb) 2611 if (w->reschedule_cb)
1706 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 2612 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1707 else if (w->interval) 2613 else if (w->interval)
1708 { 2614 {
1709 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 2615 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
1710 /* this formula differs from the one in periodic_reify because we do not always round up */ 2616 /* this formula differs from the one in periodic_reify because we do not always round up */
1711 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2617 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1712 } 2618 }
1713 else 2619 else
1714 ((WT)w)->at = w->offset; 2620 ev_at (w) = w->offset;
1715 2621
2622 EV_FREQUENT_CHECK;
2623
2624 ++periodiccnt;
1716 ev_start (EV_A_ (W)w, ++periodiccnt); 2625 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
1717 array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2); 2626 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);
1718 periodics [periodiccnt - 1] = (WT)w; 2627 ANHE_w (periodics [ev_active (w)]) = (WT)w;
1719 upheap (periodics, periodiccnt - 1); 2628 ANHE_at_cache (periodics [ev_active (w)]);
2629 upheap (periodics, ev_active (w));
1720 2630
2631 EV_FREQUENT_CHECK;
2632
1721 /*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/ 2633 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
1722} 2634}
1723 2635
1724void noinline 2636void noinline
1725ev_periodic_stop (EV_P_ ev_periodic *w) 2637ev_periodic_stop (EV_P_ ev_periodic *w)
1726{ 2638{
1727 clear_pending (EV_A_ (W)w); 2639 clear_pending (EV_A_ (W)w);
1728 if (expect_false (!ev_is_active (w))) 2640 if (expect_false (!ev_is_active (w)))
1729 return; 2641 return;
1730 2642
1731 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w)); 2643 EV_FREQUENT_CHECK;
1732 2644
1733 { 2645 {
1734 int active = ((W)w)->active; 2646 int active = ev_active (w);
1735 2647
2648 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2649
2650 --periodiccnt;
2651
1736 if (expect_true (--active < --periodiccnt)) 2652 if (expect_true (active < periodiccnt + HEAP0))
1737 { 2653 {
1738 periodics [active] = periodics [periodiccnt]; 2654 periodics [active] = periodics [periodiccnt + HEAP0];
1739 adjustheap (periodics, periodiccnt, active); 2655 adjustheap (periodics, periodiccnt, active);
1740 } 2656 }
1741 } 2657 }
1742 2658
2659 EV_FREQUENT_CHECK;
2660
1743 ev_stop (EV_A_ (W)w); 2661 ev_stop (EV_A_ (W)w);
1744} 2662}
1745 2663
1746void noinline 2664void noinline
1747ev_periodic_again (EV_P_ ev_periodic *w) 2665ev_periodic_again (EV_P_ ev_periodic *w)
… …
1757#endif 2675#endif
1758 2676
1759void noinline 2677void noinline
1760ev_signal_start (EV_P_ ev_signal *w) 2678ev_signal_start (EV_P_ ev_signal *w)
1761{ 2679{
1762#if EV_MULTIPLICITY
1763 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1764#endif
1765 if (expect_false (ev_is_active (w))) 2680 if (expect_false (ev_is_active (w)))
1766 return; 2681 return;
1767 2682
1768 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 2683 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
1769 2684
2685#if EV_MULTIPLICITY
2686 assert (("libev: a signal must not be attached to two different loops",
2687 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2688
2689 signals [w->signum - 1].loop = EV_A;
2690#endif
2691
2692 EV_FREQUENT_CHECK;
2693
2694#if EV_USE_SIGNALFD
2695 if (sigfd == -2)
1770 { 2696 {
1771#ifndef _WIN32 2697 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
1772 sigset_t full, prev; 2698 if (sigfd < 0 && errno == EINVAL)
1773 sigfillset (&full); 2699 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
1774 sigprocmask (SIG_SETMASK, &full, &prev);
1775#endif
1776 2700
1777 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); 2701 if (sigfd >= 0)
2702 {
2703 fd_intern (sigfd); /* doing it twice will not hurt */
1778 2704
1779#ifndef _WIN32 2705 sigemptyset (&sigfd_set);
1780 sigprocmask (SIG_SETMASK, &prev, 0); 2706
1781#endif 2707 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
2708 ev_set_priority (&sigfd_w, EV_MAXPRI);
2709 ev_io_start (EV_A_ &sigfd_w);
2710 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
2711 }
1782 } 2712 }
2713
2714 if (sigfd >= 0)
2715 {
2716 /* TODO: check .head */
2717 sigaddset (&sigfd_set, w->signum);
2718 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
2719
2720 signalfd (sigfd, &sigfd_set, 0);
2721 }
2722#endif
1783 2723
1784 ev_start (EV_A_ (W)w, 1); 2724 ev_start (EV_A_ (W)w, 1);
1785 wlist_add (&signals [w->signum - 1].head, (WL)w); 2725 wlist_add (&signals [w->signum - 1].head, (WL)w);
1786 2726
1787 if (!((WL)w)->next) 2727 if (!((WL)w)->next)
2728# if EV_USE_SIGNALFD
2729 if (sigfd < 0) /*TODO*/
2730# endif
1788 { 2731 {
1789#if _WIN32 2732# if _WIN32
1790 signal (w->signum, sighandler); 2733 signal (w->signum, ev_sighandler);
1791#else 2734# else
1792 struct sigaction sa; 2735 struct sigaction sa;
2736
2737 evpipe_init (EV_A);
2738
1793 sa.sa_handler = sighandler; 2739 sa.sa_handler = ev_sighandler;
1794 sigfillset (&sa.sa_mask); 2740 sigfillset (&sa.sa_mask);
1795 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 2741 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1796 sigaction (w->signum, &sa, 0); 2742 sigaction (w->signum, &sa, 0);
2743
2744 sigemptyset (&sa.sa_mask);
2745 sigaddset (&sa.sa_mask, w->signum);
2746 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
1797#endif 2747#endif
1798 } 2748 }
2749
2750 EV_FREQUENT_CHECK;
1799} 2751}
1800 2752
1801void noinline 2753void noinline
1802ev_signal_stop (EV_P_ ev_signal *w) 2754ev_signal_stop (EV_P_ ev_signal *w)
1803{ 2755{
1804 clear_pending (EV_A_ (W)w); 2756 clear_pending (EV_A_ (W)w);
1805 if (expect_false (!ev_is_active (w))) 2757 if (expect_false (!ev_is_active (w)))
1806 return; 2758 return;
1807 2759
2760 EV_FREQUENT_CHECK;
2761
1808 wlist_del (&signals [w->signum - 1].head, (WL)w); 2762 wlist_del (&signals [w->signum - 1].head, (WL)w);
1809 ev_stop (EV_A_ (W)w); 2763 ev_stop (EV_A_ (W)w);
1810 2764
1811 if (!signals [w->signum - 1].head) 2765 if (!signals [w->signum - 1].head)
2766 {
2767#if EV_MULTIPLICITY
2768 signals [w->signum - 1].loop = 0; /* unattach from signal */
2769#endif
2770#if EV_USE_SIGNALFD
2771 if (sigfd >= 0)
2772 {
2773 sigprocmask (SIG_UNBLOCK, &sigfd_set, 0);//D
2774 sigdelset (&sigfd_set, w->signum);
2775 signalfd (sigfd, &sigfd_set, 0);
2776 sigprocmask (SIG_BLOCK, &sigfd_set, 0);//D
2777 /*TODO: maybe unblock signal? */
2778 }
2779 else
2780#endif
1812 signal (w->signum, SIG_DFL); 2781 signal (w->signum, SIG_DFL);
2782 }
2783
2784 EV_FREQUENT_CHECK;
1813} 2785}
1814 2786
1815void 2787void
1816ev_child_start (EV_P_ ev_child *w) 2788ev_child_start (EV_P_ ev_child *w)
1817{ 2789{
1818#if EV_MULTIPLICITY 2790#if EV_MULTIPLICITY
1819 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 2791 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1820#endif 2792#endif
1821 if (expect_false (ev_is_active (w))) 2793 if (expect_false (ev_is_active (w)))
1822 return; 2794 return;
1823 2795
2796 EV_FREQUENT_CHECK;
2797
1824 ev_start (EV_A_ (W)w, 1); 2798 ev_start (EV_A_ (W)w, 1);
1825 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2799 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
2800
2801 EV_FREQUENT_CHECK;
1826} 2802}
1827 2803
1828void 2804void
1829ev_child_stop (EV_P_ ev_child *w) 2805ev_child_stop (EV_P_ ev_child *w)
1830{ 2806{
1831 clear_pending (EV_A_ (W)w); 2807 clear_pending (EV_A_ (W)w);
1832 if (expect_false (!ev_is_active (w))) 2808 if (expect_false (!ev_is_active (w)))
1833 return; 2809 return;
1834 2810
2811 EV_FREQUENT_CHECK;
2812
1835 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2813 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1836 ev_stop (EV_A_ (W)w); 2814 ev_stop (EV_A_ (W)w);
2815
2816 EV_FREQUENT_CHECK;
1837} 2817}
1838 2818
1839#if EV_STAT_ENABLE 2819#if EV_STAT_ENABLE
1840 2820
1841# ifdef _WIN32 2821# ifdef _WIN32
1842# undef lstat 2822# undef lstat
1843# define lstat(a,b) _stati64 (a,b) 2823# define lstat(a,b) _stati64 (a,b)
1844# endif 2824# endif
1845 2825
1846#define DEF_STAT_INTERVAL 5.0074891 2826#define DEF_STAT_INTERVAL 5.0074891
2827#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
1847#define MIN_STAT_INTERVAL 0.1074891 2828#define MIN_STAT_INTERVAL 0.1074891
1848 2829
1849static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 2830static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
1850 2831
1851#if EV_USE_INOTIFY 2832#if EV_USE_INOTIFY
1852# define EV_INOTIFY_BUFSIZE 8192 2833# define EV_INOTIFY_BUFSIZE 8192
… …
1856{ 2837{
1857 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); 2838 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);
1858 2839
1859 if (w->wd < 0) 2840 if (w->wd < 0)
1860 { 2841 {
2842 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
1861 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */ 2843 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
1862 2844
1863 /* monitor some parent directory for speedup hints */ 2845 /* monitor some parent directory for speedup hints */
2846 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2847 /* but an efficiency issue only */
1864 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 2848 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
1865 { 2849 {
1866 char path [4096]; 2850 char path [4096];
1867 strcpy (path, w->path); 2851 strcpy (path, w->path);
1868 2852
… …
1871 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF 2855 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
1872 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); 2856 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
1873 2857
1874 char *pend = strrchr (path, '/'); 2858 char *pend = strrchr (path, '/');
1875 2859
1876 if (!pend) 2860 if (!pend || pend == path)
1877 break; /* whoops, no '/', complain to your admin */ 2861 break;
1878 2862
1879 *pend = 0; 2863 *pend = 0;
1880 w->wd = inotify_add_watch (fs_fd, path, mask); 2864 w->wd = inotify_add_watch (fs_fd, path, mask);
1881 } 2865 }
1882 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 2866 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
1883 } 2867 }
1884 } 2868 }
1885 else
1886 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
1887 2869
1888 if (w->wd >= 0) 2870 if (w->wd >= 0)
2871 {
2872 struct statfs sfs;
2873
1889 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 2874 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2875
2876 /* now local changes will be tracked by inotify, but remote changes won't */
2877 /* unless the filesystem it known to be local, we therefore still poll */
2878 /* also do poll on <2.6.25, but with normal frequency */
2879
2880 if (fs_2625 && !statfs (w->path, &sfs))
2881 if (sfs.f_type == 0x1373 /* devfs */
2882 || sfs.f_type == 0xEF53 /* ext2/3 */
2883 || sfs.f_type == 0x3153464a /* jfs */
2884 || sfs.f_type == 0x52654973 /* reiser3 */
2885 || sfs.f_type == 0x01021994 /* tempfs */
2886 || sfs.f_type == 0x58465342 /* xfs */)
2887 return;
2888
2889 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2890 ev_timer_again (EV_A_ &w->timer);
2891 }
1890} 2892}
1891 2893
1892static void noinline 2894static void noinline
1893infy_del (EV_P_ ev_stat *w) 2895infy_del (EV_P_ ev_stat *w)
1894{ 2896{
… …
1908 2910
1909static void noinline 2911static void noinline
1910infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 2912infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
1911{ 2913{
1912 if (slot < 0) 2914 if (slot < 0)
1913 /* overflow, need to check for all hahs slots */ 2915 /* overflow, need to check for all hash slots */
1914 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 2916 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
1915 infy_wd (EV_A_ slot, wd, ev); 2917 infy_wd (EV_A_ slot, wd, ev);
1916 else 2918 else
1917 { 2919 {
1918 WL w_; 2920 WL w_;
… …
1924 2926
1925 if (w->wd == wd || wd == -1) 2927 if (w->wd == wd || wd == -1)
1926 { 2928 {
1927 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 2929 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
1928 { 2930 {
2931 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
1929 w->wd = -1; 2932 w->wd = -1;
1930 infy_add (EV_A_ w); /* re-add, no matter what */ 2933 infy_add (EV_A_ w); /* re-add, no matter what */
1931 } 2934 }
1932 2935
1933 stat_timer_cb (EV_A_ &w->timer, 0); 2936 stat_timer_cb (EV_A_ &w->timer, 0);
… …
1946 2949
1947 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 2950 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
1948 infy_wd (EV_A_ ev->wd, ev->wd, ev); 2951 infy_wd (EV_A_ ev->wd, ev->wd, ev);
1949} 2952}
1950 2953
1951void inline_size 2954inline_size void
2955check_2625 (EV_P)
2956{
2957 /* kernels < 2.6.25 are borked
2958 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2959 */
2960 struct utsname buf;
2961 int major, minor, micro;
2962
2963 if (uname (&buf))
2964 return;
2965
2966 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2967 return;
2968
2969 if (major < 2
2970 || (major == 2 && minor < 6)
2971 || (major == 2 && minor == 6 && micro < 25))
2972 return;
2973
2974 fs_2625 = 1;
2975}
2976
2977inline_size void
1952infy_init (EV_P) 2978infy_init (EV_P)
1953{ 2979{
1954 if (fs_fd != -2) 2980 if (fs_fd != -2)
1955 return; 2981 return;
2982
2983 fs_fd = -1;
2984
2985 check_2625 (EV_A);
1956 2986
1957 fs_fd = inotify_init (); 2987 fs_fd = inotify_init ();
1958 2988
1959 if (fs_fd >= 0) 2989 if (fs_fd >= 0)
1960 { 2990 {
… …
1962 ev_set_priority (&fs_w, EV_MAXPRI); 2992 ev_set_priority (&fs_w, EV_MAXPRI);
1963 ev_io_start (EV_A_ &fs_w); 2993 ev_io_start (EV_A_ &fs_w);
1964 } 2994 }
1965} 2995}
1966 2996
1967void inline_size 2997inline_size void
1968infy_fork (EV_P) 2998infy_fork (EV_P)
1969{ 2999{
1970 int slot; 3000 int slot;
1971 3001
1972 if (fs_fd < 0) 3002 if (fs_fd < 0)
… …
1988 w->wd = -1; 3018 w->wd = -1;
1989 3019
1990 if (fs_fd >= 0) 3020 if (fs_fd >= 0)
1991 infy_add (EV_A_ w); /* re-add, no matter what */ 3021 infy_add (EV_A_ w); /* re-add, no matter what */
1992 else 3022 else
1993 ev_timer_start (EV_A_ &w->timer); 3023 ev_timer_again (EV_A_ &w->timer);
1994 } 3024 }
1995
1996 } 3025 }
1997} 3026}
1998 3027
3028#endif
3029
3030#ifdef _WIN32
3031# define EV_LSTAT(p,b) _stati64 (p, b)
3032#else
3033# define EV_LSTAT(p,b) lstat (p, b)
1999#endif 3034#endif
2000 3035
2001void 3036void
2002ev_stat_stat (EV_P_ ev_stat *w) 3037ev_stat_stat (EV_P_ ev_stat *w)
2003{ 3038{
… …
2030 || w->prev.st_atime != w->attr.st_atime 3065 || w->prev.st_atime != w->attr.st_atime
2031 || w->prev.st_mtime != w->attr.st_mtime 3066 || w->prev.st_mtime != w->attr.st_mtime
2032 || w->prev.st_ctime != w->attr.st_ctime 3067 || w->prev.st_ctime != w->attr.st_ctime
2033 ) { 3068 ) {
2034 #if EV_USE_INOTIFY 3069 #if EV_USE_INOTIFY
3070 if (fs_fd >= 0)
3071 {
2035 infy_del (EV_A_ w); 3072 infy_del (EV_A_ w);
2036 infy_add (EV_A_ w); 3073 infy_add (EV_A_ w);
2037 ev_stat_stat (EV_A_ w); /* avoid race... */ 3074 ev_stat_stat (EV_A_ w); /* avoid race... */
3075 }
2038 #endif 3076 #endif
2039 3077
2040 ev_feed_event (EV_A_ w, EV_STAT); 3078 ev_feed_event (EV_A_ w, EV_STAT);
2041 } 3079 }
2042} 3080}
… …
2045ev_stat_start (EV_P_ ev_stat *w) 3083ev_stat_start (EV_P_ ev_stat *w)
2046{ 3084{
2047 if (expect_false (ev_is_active (w))) 3085 if (expect_false (ev_is_active (w)))
2048 return; 3086 return;
2049 3087
2050 /* since we use memcmp, we need to clear any padding data etc. */
2051 memset (&w->prev, 0, sizeof (ev_statdata));
2052 memset (&w->attr, 0, sizeof (ev_statdata));
2053
2054 ev_stat_stat (EV_A_ w); 3088 ev_stat_stat (EV_A_ w);
2055 3089
3090 if (w->interval < MIN_STAT_INTERVAL && w->interval)
2056 if (w->interval < MIN_STAT_INTERVAL) 3091 w->interval = MIN_STAT_INTERVAL;
2057 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2058 3092
2059 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval); 3093 ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2060 ev_set_priority (&w->timer, ev_priority (w)); 3094 ev_set_priority (&w->timer, ev_priority (w));
2061 3095
2062#if EV_USE_INOTIFY 3096#if EV_USE_INOTIFY
2063 infy_init (EV_A); 3097 infy_init (EV_A);
2064 3098
2065 if (fs_fd >= 0) 3099 if (fs_fd >= 0)
2066 infy_add (EV_A_ w); 3100 infy_add (EV_A_ w);
2067 else 3101 else
2068#endif 3102#endif
2069 ev_timer_start (EV_A_ &w->timer); 3103 ev_timer_again (EV_A_ &w->timer);
2070 3104
2071 ev_start (EV_A_ (W)w, 1); 3105 ev_start (EV_A_ (W)w, 1);
3106
3107 EV_FREQUENT_CHECK;
2072} 3108}
2073 3109
2074void 3110void
2075ev_stat_stop (EV_P_ ev_stat *w) 3111ev_stat_stop (EV_P_ ev_stat *w)
2076{ 3112{
2077 clear_pending (EV_A_ (W)w); 3113 clear_pending (EV_A_ (W)w);
2078 if (expect_false (!ev_is_active (w))) 3114 if (expect_false (!ev_is_active (w)))
2079 return; 3115 return;
2080 3116
3117 EV_FREQUENT_CHECK;
3118
2081#if EV_USE_INOTIFY 3119#if EV_USE_INOTIFY
2082 infy_del (EV_A_ w); 3120 infy_del (EV_A_ w);
2083#endif 3121#endif
2084 ev_timer_stop (EV_A_ &w->timer); 3122 ev_timer_stop (EV_A_ &w->timer);
2085 3123
2086 ev_stop (EV_A_ (W)w); 3124 ev_stop (EV_A_ (W)w);
3125
3126 EV_FREQUENT_CHECK;
2087} 3127}
2088#endif 3128#endif
2089 3129
2090#if EV_IDLE_ENABLE 3130#if EV_IDLE_ENABLE
2091void 3131void
… …
2093{ 3133{
2094 if (expect_false (ev_is_active (w))) 3134 if (expect_false (ev_is_active (w)))
2095 return; 3135 return;
2096 3136
2097 pri_adjust (EV_A_ (W)w); 3137 pri_adjust (EV_A_ (W)w);
3138
3139 EV_FREQUENT_CHECK;
2098 3140
2099 { 3141 {
2100 int active = ++idlecnt [ABSPRI (w)]; 3142 int active = ++idlecnt [ABSPRI (w)];
2101 3143
2102 ++idleall; 3144 ++idleall;
2103 ev_start (EV_A_ (W)w, active); 3145 ev_start (EV_A_ (W)w, active);
2104 3146
2105 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 3147 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2106 idles [ABSPRI (w)][active - 1] = w; 3148 idles [ABSPRI (w)][active - 1] = w;
2107 } 3149 }
3150
3151 EV_FREQUENT_CHECK;
2108} 3152}
2109 3153
2110void 3154void
2111ev_idle_stop (EV_P_ ev_idle *w) 3155ev_idle_stop (EV_P_ ev_idle *w)
2112{ 3156{
2113 clear_pending (EV_A_ (W)w); 3157 clear_pending (EV_A_ (W)w);
2114 if (expect_false (!ev_is_active (w))) 3158 if (expect_false (!ev_is_active (w)))
2115 return; 3159 return;
2116 3160
3161 EV_FREQUENT_CHECK;
3162
2117 { 3163 {
2118 int active = ((W)w)->active; 3164 int active = ev_active (w);
2119 3165
2120 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]]; 3166 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2121 ((W)idles [ABSPRI (w)][active - 1])->active = active; 3167 ev_active (idles [ABSPRI (w)][active - 1]) = active;
2122 3168
2123 ev_stop (EV_A_ (W)w); 3169 ev_stop (EV_A_ (W)w);
2124 --idleall; 3170 --idleall;
2125 } 3171 }
3172
3173 EV_FREQUENT_CHECK;
2126} 3174}
2127#endif 3175#endif
2128 3176
2129void 3177void
2130ev_prepare_start (EV_P_ ev_prepare *w) 3178ev_prepare_start (EV_P_ ev_prepare *w)
2131{ 3179{
2132 if (expect_false (ev_is_active (w))) 3180 if (expect_false (ev_is_active (w)))
2133 return; 3181 return;
3182
3183 EV_FREQUENT_CHECK;
2134 3184
2135 ev_start (EV_A_ (W)w, ++preparecnt); 3185 ev_start (EV_A_ (W)w, ++preparecnt);
2136 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 3186 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2137 prepares [preparecnt - 1] = w; 3187 prepares [preparecnt - 1] = w;
3188
3189 EV_FREQUENT_CHECK;
2138} 3190}
2139 3191
2140void 3192void
2141ev_prepare_stop (EV_P_ ev_prepare *w) 3193ev_prepare_stop (EV_P_ ev_prepare *w)
2142{ 3194{
2143 clear_pending (EV_A_ (W)w); 3195 clear_pending (EV_A_ (W)w);
2144 if (expect_false (!ev_is_active (w))) 3196 if (expect_false (!ev_is_active (w)))
2145 return; 3197 return;
2146 3198
3199 EV_FREQUENT_CHECK;
3200
2147 { 3201 {
2148 int active = ((W)w)->active; 3202 int active = ev_active (w);
3203
2149 prepares [active - 1] = prepares [--preparecnt]; 3204 prepares [active - 1] = prepares [--preparecnt];
2150 ((W)prepares [active - 1])->active = active; 3205 ev_active (prepares [active - 1]) = active;
2151 } 3206 }
2152 3207
2153 ev_stop (EV_A_ (W)w); 3208 ev_stop (EV_A_ (W)w);
3209
3210 EV_FREQUENT_CHECK;
2154} 3211}
2155 3212
2156void 3213void
2157ev_check_start (EV_P_ ev_check *w) 3214ev_check_start (EV_P_ ev_check *w)
2158{ 3215{
2159 if (expect_false (ev_is_active (w))) 3216 if (expect_false (ev_is_active (w)))
2160 return; 3217 return;
3218
3219 EV_FREQUENT_CHECK;
2161 3220
2162 ev_start (EV_A_ (W)w, ++checkcnt); 3221 ev_start (EV_A_ (W)w, ++checkcnt);
2163 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 3222 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2164 checks [checkcnt - 1] = w; 3223 checks [checkcnt - 1] = w;
3224
3225 EV_FREQUENT_CHECK;
2165} 3226}
2166 3227
2167void 3228void
2168ev_check_stop (EV_P_ ev_check *w) 3229ev_check_stop (EV_P_ ev_check *w)
2169{ 3230{
2170 clear_pending (EV_A_ (W)w); 3231 clear_pending (EV_A_ (W)w);
2171 if (expect_false (!ev_is_active (w))) 3232 if (expect_false (!ev_is_active (w)))
2172 return; 3233 return;
2173 3234
3235 EV_FREQUENT_CHECK;
3236
2174 { 3237 {
2175 int active = ((W)w)->active; 3238 int active = ev_active (w);
3239
2176 checks [active - 1] = checks [--checkcnt]; 3240 checks [active - 1] = checks [--checkcnt];
2177 ((W)checks [active - 1])->active = active; 3241 ev_active (checks [active - 1]) = active;
2178 } 3242 }
2179 3243
2180 ev_stop (EV_A_ (W)w); 3244 ev_stop (EV_A_ (W)w);
3245
3246 EV_FREQUENT_CHECK;
2181} 3247}
2182 3248
2183#if EV_EMBED_ENABLE 3249#if EV_EMBED_ENABLE
2184void noinline 3250void noinline
2185ev_embed_sweep (EV_P_ ev_embed *w) 3251ev_embed_sweep (EV_P_ ev_embed *w)
… …
2193 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 3259 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2194 3260
2195 if (ev_cb (w)) 3261 if (ev_cb (w))
2196 ev_feed_event (EV_A_ (W)w, EV_EMBED); 3262 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2197 else 3263 else
2198 ev_embed_sweep (loop, w); 3264 ev_loop (w->other, EVLOOP_NONBLOCK);
2199} 3265}
2200 3266
2201static void 3267static void
2202embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 3268embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2203{ 3269{
2204 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 3270 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2205 3271
2206 fd_reify (w->other); 3272 {
3273 EV_P = w->other;
3274
3275 while (fdchangecnt)
3276 {
3277 fd_reify (EV_A);
3278 ev_loop (EV_A_ EVLOOP_NONBLOCK);
3279 }
3280 }
2207} 3281}
3282
3283static void
3284embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
3285{
3286 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3287
3288 ev_embed_stop (EV_A_ w);
3289
3290 {
3291 EV_P = w->other;
3292
3293 ev_loop_fork (EV_A);
3294 ev_loop (EV_A_ EVLOOP_NONBLOCK);
3295 }
3296
3297 ev_embed_start (EV_A_ w);
3298}
3299
3300#if 0
3301static void
3302embed_idle_cb (EV_P_ ev_idle *idle, int revents)
3303{
3304 ev_idle_stop (EV_A_ idle);
3305}
3306#endif
2208 3307
2209void 3308void
2210ev_embed_start (EV_P_ ev_embed *w) 3309ev_embed_start (EV_P_ ev_embed *w)
2211{ 3310{
2212 if (expect_false (ev_is_active (w))) 3311 if (expect_false (ev_is_active (w)))
2213 return; 3312 return;
2214 3313
2215 { 3314 {
2216 struct ev_loop *loop = w->other; 3315 EV_P = w->other;
2217 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 3316 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2218 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 3317 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2219 } 3318 }
3319
3320 EV_FREQUENT_CHECK;
2220 3321
2221 ev_set_priority (&w->io, ev_priority (w)); 3322 ev_set_priority (&w->io, ev_priority (w));
2222 ev_io_start (EV_A_ &w->io); 3323 ev_io_start (EV_A_ &w->io);
2223 3324
2224 ev_prepare_init (&w->prepare, embed_prepare_cb); 3325 ev_prepare_init (&w->prepare, embed_prepare_cb);
2225 ev_set_priority (&w->prepare, EV_MINPRI); 3326 ev_set_priority (&w->prepare, EV_MINPRI);
2226 ev_prepare_start (EV_A_ &w->prepare); 3327 ev_prepare_start (EV_A_ &w->prepare);
2227 3328
3329 ev_fork_init (&w->fork, embed_fork_cb);
3330 ev_fork_start (EV_A_ &w->fork);
3331
3332 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
3333
2228 ev_start (EV_A_ (W)w, 1); 3334 ev_start (EV_A_ (W)w, 1);
3335
3336 EV_FREQUENT_CHECK;
2229} 3337}
2230 3338
2231void 3339void
2232ev_embed_stop (EV_P_ ev_embed *w) 3340ev_embed_stop (EV_P_ ev_embed *w)
2233{ 3341{
2234 clear_pending (EV_A_ (W)w); 3342 clear_pending (EV_A_ (W)w);
2235 if (expect_false (!ev_is_active (w))) 3343 if (expect_false (!ev_is_active (w)))
2236 return; 3344 return;
2237 3345
3346 EV_FREQUENT_CHECK;
3347
2238 ev_io_stop (EV_A_ &w->io); 3348 ev_io_stop (EV_A_ &w->io);
2239 ev_prepare_stop (EV_A_ &w->prepare); 3349 ev_prepare_stop (EV_A_ &w->prepare);
3350 ev_fork_stop (EV_A_ &w->fork);
2240 3351
2241 ev_stop (EV_A_ (W)w); 3352 EV_FREQUENT_CHECK;
2242} 3353}
2243#endif 3354#endif
2244 3355
2245#if EV_FORK_ENABLE 3356#if EV_FORK_ENABLE
2246void 3357void
2247ev_fork_start (EV_P_ ev_fork *w) 3358ev_fork_start (EV_P_ ev_fork *w)
2248{ 3359{
2249 if (expect_false (ev_is_active (w))) 3360 if (expect_false (ev_is_active (w)))
2250 return; 3361 return;
3362
3363 EV_FREQUENT_CHECK;
2251 3364
2252 ev_start (EV_A_ (W)w, ++forkcnt); 3365 ev_start (EV_A_ (W)w, ++forkcnt);
2253 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 3366 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2254 forks [forkcnt - 1] = w; 3367 forks [forkcnt - 1] = w;
3368
3369 EV_FREQUENT_CHECK;
2255} 3370}
2256 3371
2257void 3372void
2258ev_fork_stop (EV_P_ ev_fork *w) 3373ev_fork_stop (EV_P_ ev_fork *w)
2259{ 3374{
2260 clear_pending (EV_A_ (W)w); 3375 clear_pending (EV_A_ (W)w);
2261 if (expect_false (!ev_is_active (w))) 3376 if (expect_false (!ev_is_active (w)))
2262 return; 3377 return;
2263 3378
3379 EV_FREQUENT_CHECK;
3380
2264 { 3381 {
2265 int active = ((W)w)->active; 3382 int active = ev_active (w);
3383
2266 forks [active - 1] = forks [--forkcnt]; 3384 forks [active - 1] = forks [--forkcnt];
2267 ((W)forks [active - 1])->active = active; 3385 ev_active (forks [active - 1]) = active;
2268 } 3386 }
2269 3387
2270 ev_stop (EV_A_ (W)w); 3388 ev_stop (EV_A_ (W)w);
3389
3390 EV_FREQUENT_CHECK;
3391}
3392#endif
3393
3394#if EV_ASYNC_ENABLE
3395void
3396ev_async_start (EV_P_ ev_async *w)
3397{
3398 if (expect_false (ev_is_active (w)))
3399 return;
3400
3401 evpipe_init (EV_A);
3402
3403 EV_FREQUENT_CHECK;
3404
3405 ev_start (EV_A_ (W)w, ++asynccnt);
3406 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
3407 asyncs [asynccnt - 1] = w;
3408
3409 EV_FREQUENT_CHECK;
3410}
3411
3412void
3413ev_async_stop (EV_P_ ev_async *w)
3414{
3415 clear_pending (EV_A_ (W)w);
3416 if (expect_false (!ev_is_active (w)))
3417 return;
3418
3419 EV_FREQUENT_CHECK;
3420
3421 {
3422 int active = ev_active (w);
3423
3424 asyncs [active - 1] = asyncs [--asynccnt];
3425 ev_active (asyncs [active - 1]) = active;
3426 }
3427
3428 ev_stop (EV_A_ (W)w);
3429
3430 EV_FREQUENT_CHECK;
3431}
3432
3433void
3434ev_async_send (EV_P_ ev_async *w)
3435{
3436 w->sent = 1;
3437 evpipe_write (EV_A_ &async_pending);
2271} 3438}
2272#endif 3439#endif
2273 3440
2274/*****************************************************************************/ 3441/*****************************************************************************/
2275 3442
… …
2285once_cb (EV_P_ struct ev_once *once, int revents) 3452once_cb (EV_P_ struct ev_once *once, int revents)
2286{ 3453{
2287 void (*cb)(int revents, void *arg) = once->cb; 3454 void (*cb)(int revents, void *arg) = once->cb;
2288 void *arg = once->arg; 3455 void *arg = once->arg;
2289 3456
2290 ev_io_stop (EV_A_ &once->io); 3457 ev_io_stop (EV_A_ &once->io);
2291 ev_timer_stop (EV_A_ &once->to); 3458 ev_timer_stop (EV_A_ &once->to);
2292 ev_free (once); 3459 ev_free (once);
2293 3460
2294 cb (revents, arg); 3461 cb (revents, arg);
2295} 3462}
2296 3463
2297static void 3464static void
2298once_cb_io (EV_P_ ev_io *w, int revents) 3465once_cb_io (EV_P_ ev_io *w, int revents)
2299{ 3466{
2300 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 3467 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
3468
3469 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
2301} 3470}
2302 3471
2303static void 3472static void
2304once_cb_to (EV_P_ ev_timer *w, int revents) 3473once_cb_to (EV_P_ ev_timer *w, int revents)
2305{ 3474{
2306 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 3475 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
3476
3477 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
2307} 3478}
2308 3479
2309void 3480void
2310ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 3481ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
2311{ 3482{
… …
2333 ev_timer_set (&once->to, timeout, 0.); 3504 ev_timer_set (&once->to, timeout, 0.);
2334 ev_timer_start (EV_A_ &once->to); 3505 ev_timer_start (EV_A_ &once->to);
2335 } 3506 }
2336} 3507}
2337 3508
3509/*****************************************************************************/
3510
3511#if EV_WALK_ENABLE
3512void
3513ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3514{
3515 int i, j;
3516 ev_watcher_list *wl, *wn;
3517
3518 if (types & (EV_IO | EV_EMBED))
3519 for (i = 0; i < anfdmax; ++i)
3520 for (wl = anfds [i].head; wl; )
3521 {
3522 wn = wl->next;
3523
3524#if EV_EMBED_ENABLE
3525 if (ev_cb ((ev_io *)wl) == embed_io_cb)
3526 {
3527 if (types & EV_EMBED)
3528 cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
3529 }
3530 else
3531#endif
3532#if EV_USE_INOTIFY
3533 if (ev_cb ((ev_io *)wl) == infy_cb)
3534 ;
3535 else
3536#endif
3537 if ((ev_io *)wl != &pipe_w)
3538 if (types & EV_IO)
3539 cb (EV_A_ EV_IO, wl);
3540
3541 wl = wn;
3542 }
3543
3544 if (types & (EV_TIMER | EV_STAT))
3545 for (i = timercnt + HEAP0; i-- > HEAP0; )
3546#if EV_STAT_ENABLE
3547 /*TODO: timer is not always active*/
3548 if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
3549 {
3550 if (types & EV_STAT)
3551 cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
3552 }
3553 else
3554#endif
3555 if (types & EV_TIMER)
3556 cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
3557
3558#if EV_PERIODIC_ENABLE
3559 if (types & EV_PERIODIC)
3560 for (i = periodiccnt + HEAP0; i-- > HEAP0; )
3561 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3562#endif
3563
3564#if EV_IDLE_ENABLE
3565 if (types & EV_IDLE)
3566 for (j = NUMPRI; i--; )
3567 for (i = idlecnt [j]; i--; )
3568 cb (EV_A_ EV_IDLE, idles [j][i]);
3569#endif
3570
3571#if EV_FORK_ENABLE
3572 if (types & EV_FORK)
3573 for (i = forkcnt; i--; )
3574 if (ev_cb (forks [i]) != embed_fork_cb)
3575 cb (EV_A_ EV_FORK, forks [i]);
3576#endif
3577
3578#if EV_ASYNC_ENABLE
3579 if (types & EV_ASYNC)
3580 for (i = asynccnt; i--; )
3581 cb (EV_A_ EV_ASYNC, asyncs [i]);
3582#endif
3583
3584 if (types & EV_PREPARE)
3585 for (i = preparecnt; i--; )
3586#if EV_EMBED_ENABLE
3587 if (ev_cb (prepares [i]) != embed_prepare_cb)
3588#endif
3589 cb (EV_A_ EV_PREPARE, prepares [i]);
3590
3591 if (types & EV_CHECK)
3592 for (i = checkcnt; i--; )
3593 cb (EV_A_ EV_CHECK, checks [i]);
3594
3595 if (types & EV_SIGNAL)
3596 for (i = 0; i < EV_NSIG - 1; ++i)
3597 for (wl = signals [i].head; wl; )
3598 {
3599 wn = wl->next;
3600 cb (EV_A_ EV_SIGNAL, wl);
3601 wl = wn;
3602 }
3603
3604 if (types & EV_CHILD)
3605 for (i = EV_PID_HASHSIZE; i--; )
3606 for (wl = childs [i]; wl; )
3607 {
3608 wn = wl->next;
3609 cb (EV_A_ EV_CHILD, wl);
3610 wl = wn;
3611 }
3612/* EV_STAT 0x00001000 /* stat data changed */
3613/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3614}
3615#endif
3616
2338#if EV_MULTIPLICITY 3617#if EV_MULTIPLICITY
2339 #include "ev_wrap.h" 3618 #include "ev_wrap.h"
2340#endif 3619#endif
2341 3620
2342#ifdef __cplusplus 3621#ifdef __cplusplus

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