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Comparing libev/ev.c (file contents):
Revision 1.339 by root, Tue Mar 16 00:43:22 2010 UTC vs.
Revision 1.374 by root, Sat Feb 26 15:21:01 2011 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008,2009,2010 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007,2008,2009,2010,2011 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 modifica- 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * tion, are permitted provided that the following conditions are met: 8 * tion, are permitted provided that the following conditions are met:
9 * 9 *
10 * 1. Redistributions of source code must retain the above copyright notice, 10 * 1. Redistributions of source code must retain the above copyright notice,
11 * this list of conditions and the following disclaimer. 11 * this list of conditions and the following disclaimer.
12 * 12 *
13 * 2. Redistributions in binary form must reproduce the above copyright 13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the 14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution. 15 * documentation and/or other materials provided with the distribution.
16 * 16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 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- 18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO 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- 20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
… …
35 * and other provisions required by the GPL. If you do not delete the 35 * and other provisions required by the GPL. If you do not delete the
36 * provisions above, a recipient may use your version of this file under 36 * provisions above, a recipient may use your version of this file under
37 * either the BSD or the GPL. 37 * either the BSD or the GPL.
38 */ 38 */
39 39
40#ifdef __cplusplus
41extern "C" {
42#endif
43
44/* this big block deduces configuration from config.h */ 40/* this big block deduces configuration from config.h */
45#ifndef EV_STANDALONE 41#ifndef EV_STANDALONE
46# ifdef EV_CONFIG_H 42# ifdef EV_CONFIG_H
47# include EV_CONFIG_H 43# include EV_CONFIG_H
48# else 44# else
49# include "config.h" 45# include "config.h"
50# endif 46# endif
47
48#if HAVE_FLOOR
49# ifndef EV_USE_FLOOR
50# define EV_USE_FLOOR 1
51# endif
52#endif
51 53
52# if HAVE_CLOCK_SYSCALL 54# if HAVE_CLOCK_SYSCALL
53# ifndef EV_USE_CLOCK_SYSCALL 55# ifndef EV_USE_CLOCK_SYSCALL
54# define EV_USE_CLOCK_SYSCALL 1 56# define EV_USE_CLOCK_SYSCALL 1
55# ifndef EV_USE_REALTIME 57# ifndef EV_USE_REALTIME
… …
77# ifndef EV_USE_REALTIME 79# ifndef EV_USE_REALTIME
78# define EV_USE_REALTIME 0 80# define EV_USE_REALTIME 0
79# endif 81# endif
80# endif 82# endif
81 83
84# if HAVE_NANOSLEEP
82# ifndef EV_USE_NANOSLEEP 85# ifndef EV_USE_NANOSLEEP
83# if HAVE_NANOSLEEP
84# define EV_USE_NANOSLEEP EV_FEATURE_OS 86# define EV_USE_NANOSLEEP EV_FEATURE_OS
87# endif
85# else 88# else
89# undef EV_USE_NANOSLEEP
86# define EV_USE_NANOSLEEP 0 90# define EV_USE_NANOSLEEP 0
91# endif
92
93# if HAVE_SELECT && HAVE_SYS_SELECT_H
94# ifndef EV_USE_SELECT
95# define EV_USE_SELECT EV_FEATURE_BACKENDS
87# endif 96# endif
97# else
98# undef EV_USE_SELECT
99# define EV_USE_SELECT 0
88# endif 100# endif
89 101
102# if HAVE_POLL && HAVE_POLL_H
90# ifndef EV_USE_SELECT 103# ifndef EV_USE_POLL
91# if HAVE_SELECT && HAVE_SYS_SELECT_H
92# define EV_USE_SELECT EV_FEATURE_BACKENDS 104# define EV_USE_POLL EV_FEATURE_BACKENDS
93# else
94# define EV_USE_SELECT 0
95# endif 105# endif
96# endif
97
98# ifndef EV_USE_POLL
99# if HAVE_POLL && HAVE_POLL_H
100# define EV_USE_POLL EV_FEATURE_BACKENDS
101# else 106# else
107# undef EV_USE_POLL
102# define EV_USE_POLL 0 108# define EV_USE_POLL 0
103# endif
104# endif 109# endif
105 110
106# ifndef EV_USE_EPOLL
107# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H 111# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
112# ifndef EV_USE_EPOLL
108# define EV_USE_EPOLL EV_FEATURE_BACKENDS 113# define EV_USE_EPOLL EV_FEATURE_BACKENDS
109# else
110# define EV_USE_EPOLL 0
111# endif 114# endif
115# else
116# undef EV_USE_EPOLL
117# define EV_USE_EPOLL 0
112# endif 118# endif
113 119
114# ifndef EV_USE_KQUEUE
115# if HAVE_KQUEUE && HAVE_SYS_EVENT_H 120# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
121# ifndef EV_USE_KQUEUE
116# define EV_USE_KQUEUE EV_FEATURE_BACKENDS 122# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
117# else
118# define EV_USE_KQUEUE 0
119# endif 123# endif
124# else
125# undef EV_USE_KQUEUE
126# define EV_USE_KQUEUE 0
120# endif 127# endif
121 128
122# ifndef EV_USE_PORT
123# if HAVE_PORT_H && HAVE_PORT_CREATE 129# if HAVE_PORT_H && HAVE_PORT_CREATE
130# ifndef EV_USE_PORT
124# define EV_USE_PORT EV_FEATURE_BACKENDS 131# define EV_USE_PORT EV_FEATURE_BACKENDS
125# else
126# define EV_USE_PORT 0
127# endif 132# endif
133# else
134# undef EV_USE_PORT
135# define EV_USE_PORT 0
128# endif 136# endif
129 137
130# ifndef EV_USE_INOTIFY
131# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H 138# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
139# ifndef EV_USE_INOTIFY
132# define EV_USE_INOTIFY EV_FEATURE_OS 140# define EV_USE_INOTIFY EV_FEATURE_OS
133# else
134# define EV_USE_INOTIFY 0
135# endif 141# endif
142# else
143# undef EV_USE_INOTIFY
144# define EV_USE_INOTIFY 0
136# endif 145# endif
137 146
138# ifndef EV_USE_SIGNALFD
139# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H 147# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
148# ifndef EV_USE_SIGNALFD
140# define EV_USE_SIGNALFD EV_FEATURE_OS 149# define EV_USE_SIGNALFD EV_FEATURE_OS
141# else
142# define EV_USE_SIGNALFD 0
143# endif 150# endif
151# else
152# undef EV_USE_SIGNALFD
153# define EV_USE_SIGNALFD 0
144# endif 154# endif
145 155
156# if HAVE_EVENTFD
146# ifndef EV_USE_EVENTFD 157# ifndef EV_USE_EVENTFD
147# if HAVE_EVENTFD
148# define EV_USE_EVENTFD EV_FEATURE_OS 158# define EV_USE_EVENTFD EV_FEATURE_OS
149# else
150# define EV_USE_EVENTFD 0
151# endif 159# endif
160# else
161# undef EV_USE_EVENTFD
162# define EV_USE_EVENTFD 0
152# endif 163# endif
153 164
154#endif 165#endif
155 166
156#include <math.h>
157#include <stdlib.h> 167#include <stdlib.h>
158#include <string.h> 168#include <string.h>
159#include <fcntl.h> 169#include <fcntl.h>
160#include <stddef.h> 170#include <stddef.h>
161 171
… …
172#ifdef EV_H 182#ifdef EV_H
173# include EV_H 183# include EV_H
174#else 184#else
175# include "ev.h" 185# include "ev.h"
176#endif 186#endif
187
188EV_CPP(extern "C" {)
177 189
178#ifndef _WIN32 190#ifndef _WIN32
179# include <sys/time.h> 191# include <sys/time.h>
180# include <sys/wait.h> 192# include <sys/wait.h>
181# include <unistd.h> 193# include <unistd.h>
… …
186# ifndef EV_SELECT_IS_WINSOCKET 198# ifndef EV_SELECT_IS_WINSOCKET
187# define EV_SELECT_IS_WINSOCKET 1 199# define EV_SELECT_IS_WINSOCKET 1
188# endif 200# endif
189# undef EV_AVOID_STDIO 201# undef EV_AVOID_STDIO
190#endif 202#endif
203
204/* OS X, in its infinite idiocy, actually HARDCODES
205 * a limit of 1024 into their select. Where people have brains,
206 * OS X engineers apparently have a vacuum. Or maybe they were
207 * ordered to have a vacuum, or they do anything for money.
208 * This might help. Or not.
209 */
210#define _DARWIN_UNLIMITED_SELECT 1
191 211
192/* this block tries to deduce configuration from header-defined symbols and defaults */ 212/* this block tries to deduce configuration from header-defined symbols and defaults */
193 213
194/* try to deduce the maximum number of signals on this platform */ 214/* try to deduce the maximum number of signals on this platform */
195#if defined (EV_NSIG) 215#if defined (EV_NSIG)
… …
217/* to make it compile regardless, just remove the above line, */ 237/* to make it compile regardless, just remove the above line, */
218/* but consider reporting it, too! :) */ 238/* but consider reporting it, too! :) */
219# define EV_NSIG 65 239# define EV_NSIG 65
220#endif 240#endif
221 241
242#ifndef EV_USE_FLOOR
243# define EV_USE_FLOOR 0
244#endif
245
222#ifndef EV_USE_CLOCK_SYSCALL 246#ifndef EV_USE_CLOCK_SYSCALL
223# if __linux && __GLIBC__ >= 2 247# if __linux && __GLIBC__ >= 2
224# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS 248# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
225# else 249# else
226# define EV_USE_CLOCK_SYSCALL 0 250# define EV_USE_CLOCK_SYSCALL 0
… …
361# undef EV_USE_INOTIFY 385# undef EV_USE_INOTIFY
362# define EV_USE_INOTIFY 0 386# define EV_USE_INOTIFY 0
363#endif 387#endif
364 388
365#if !EV_USE_NANOSLEEP 389#if !EV_USE_NANOSLEEP
366# ifndef _WIN32 390/* hp-ux has it in sys/time.h, which we unconditionally include above */
391# if !defined(_WIN32) && !defined(__hpux)
367# include <sys/select.h> 392# include <sys/select.h>
368# endif 393# endif
369#endif 394#endif
370 395
371#if EV_USE_INOTIFY 396#if EV_USE_INOTIFY
372# include <sys/utsname.h>
373# include <sys/statfs.h> 397# include <sys/statfs.h>
374# include <sys/inotify.h> 398# include <sys/inotify.h>
375/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 399/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
376# ifndef IN_DONT_FOLLOW 400# ifndef IN_DONT_FOLLOW
377# undef EV_USE_INOTIFY 401# undef EV_USE_INOTIFY
… …
394# define EFD_CLOEXEC O_CLOEXEC 418# define EFD_CLOEXEC O_CLOEXEC
395# else 419# else
396# define EFD_CLOEXEC 02000000 420# define EFD_CLOEXEC 02000000
397# endif 421# endif
398# endif 422# endif
399# ifdef __cplusplus
400extern "C" {
401# endif
402int (eventfd) (unsigned int initval, int flags); 423EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
403# ifdef __cplusplus
404}
405# endif
406#endif 424#endif
407 425
408#if EV_USE_SIGNALFD 426#if EV_USE_SIGNALFD
409/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 427/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
410# include <stdint.h> 428# include <stdint.h>
… …
416# define SFD_CLOEXEC O_CLOEXEC 434# define SFD_CLOEXEC O_CLOEXEC
417# else 435# else
418# define SFD_CLOEXEC 02000000 436# define SFD_CLOEXEC 02000000
419# endif 437# endif
420# endif 438# endif
421# ifdef __cplusplus
422extern "C" {
423# endif
424int signalfd (int fd, const sigset_t *mask, int flags); 439EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
425 440
426struct signalfd_siginfo 441struct signalfd_siginfo
427{ 442{
428 uint32_t ssi_signo; 443 uint32_t ssi_signo;
429 char pad[128 - sizeof (uint32_t)]; 444 char pad[128 - sizeof (uint32_t)];
430}; 445};
431# ifdef __cplusplus
432}
433# endif 446#endif
434#endif
435
436 447
437/**/ 448/**/
438 449
439#if EV_VERIFY >= 3 450#if EV_VERIFY >= 3
440# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 451# define EV_FREQUENT_CHECK ev_verify (EV_A)
441#else 452#else
442# define EV_FREQUENT_CHECK do { } while (0) 453# define EV_FREQUENT_CHECK do { } while (0)
443#endif 454#endif
444 455
445/* 456/*
446 * This is used to avoid floating point rounding problems. 457 * This is used to work around floating point rounding problems.
447 * It is added to ev_rt_now when scheduling periodics
448 * to ensure progress, time-wise, even when rounding
449 * errors are against us.
450 * This value is good at least till the year 4000. 458 * This value is good at least till the year 4000.
451 * Better solutions welcome.
452 */ 459 */
453#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 460#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
461/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
454 462
455#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 463#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
456#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 464#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
465
466#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
467#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
457 468
458#if __GNUC__ >= 4 469#if __GNUC__ >= 4
459# define expect(expr,value) __builtin_expect ((expr),(value)) 470# define expect(expr,value) __builtin_expect ((expr),(value))
460# define noinline __attribute__ ((noinline)) 471# define noinline __attribute__ ((noinline))
461#else 472#else
… …
494#define ev_active(w) ((W)(w))->active 505#define ev_active(w) ((W)(w))->active
495#define ev_at(w) ((WT)(w))->at 506#define ev_at(w) ((WT)(w))->at
496 507
497#if EV_USE_REALTIME 508#if EV_USE_REALTIME
498/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 509/* sig_atomic_t is used to avoid per-thread variables or locking but still */
499/* giving it a reasonably high chance of working on typical architetcures */ 510/* giving it a reasonably high chance of working on typical architectures */
500static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 511static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
501#endif 512#endif
502 513
503#if EV_USE_MONOTONIC 514#if EV_USE_MONOTONIC
504static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 515static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
… …
515#endif 526#endif
516 527
517#ifdef _WIN32 528#ifdef _WIN32
518# include "ev_win32.c" 529# include "ev_win32.c"
519#endif 530#endif
531
532/*****************************************************************************/
533
534/* define a suitable floor function (only used by periodics atm) */
535
536#if EV_USE_FLOOR
537# include <math.h>
538# define ev_floor(v) floor (v)
539#else
540
541#include <float.h>
542
543/* a floor() replacement function, should be independent of ev_tstamp type */
544static ev_tstamp noinline
545ev_floor (ev_tstamp v)
546{
547 /* the choice of shift factor is not terribly important */
548#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
549 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
550#else
551 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
552#endif
553
554 /* argument too large for an unsigned long? */
555 if (expect_false (v >= shift))
556 {
557 ev_tstamp f;
558
559 if (v == v - 1.)
560 return v; /* very large number */
561
562 f = shift * ev_floor (v * (1. / shift));
563 return f + ev_floor (v - f);
564 }
565
566 /* special treatment for negative args? */
567 if (expect_false (v < 0.))
568 {
569 ev_tstamp f = -ev_floor (-v);
570
571 return f - (f == v ? 0 : 1);
572 }
573
574 /* fits into an unsigned long */
575 return (unsigned long)v;
576}
577
578#endif
579
580/*****************************************************************************/
581
582#ifdef __linux
583# include <sys/utsname.h>
584#endif
585
586static unsigned int noinline
587ev_linux_version (void)
588{
589#ifdef __linux
590 unsigned int v = 0;
591 struct utsname buf;
592 int i;
593 char *p = buf.release;
594
595 if (uname (&buf))
596 return 0;
597
598 for (i = 3+1; --i; )
599 {
600 unsigned int c = 0;
601
602 for (;;)
603 {
604 if (*p >= '0' && *p <= '9')
605 c = c * 10 + *p++ - '0';
606 else
607 {
608 p += *p == '.';
609 break;
610 }
611 }
612
613 v = (v << 8) | c;
614 }
615
616 return v;
617#else
618 return 0;
619#endif
620}
520 621
521/*****************************************************************************/ 622/*****************************************************************************/
522 623
523#if EV_AVOID_STDIO 624#if EV_AVOID_STDIO
524static void noinline 625static void noinline
… …
545 if (syserr_cb) 646 if (syserr_cb)
546 syserr_cb (msg); 647 syserr_cb (msg);
547 else 648 else
548 { 649 {
549#if EV_AVOID_STDIO 650#if EV_AVOID_STDIO
550 const char *err = strerror (errno);
551
552 ev_printerr (msg); 651 ev_printerr (msg);
553 ev_printerr (": "); 652 ev_printerr (": ");
554 ev_printerr (err); 653 ev_printerr (strerror (errno));
555 ev_printerr ("\n"); 654 ev_printerr ("\n");
556#else 655#else
557 perror (msg); 656 perror (msg);
558#endif 657#endif
559 abort (); 658 abort ();
… …
593 ptr = alloc (ptr, size); 692 ptr = alloc (ptr, size);
594 693
595 if (!ptr && size) 694 if (!ptr && size)
596 { 695 {
597#if EV_AVOID_STDIO 696#if EV_AVOID_STDIO
598 ev_printerr ("libev: memory allocation failed, aborting.\n"); 697 ev_printerr ("(libev) memory allocation failed, aborting.\n");
599#else 698#else
600 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 699 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
601#endif 700#endif
602 abort (); 701 abort ();
603 } 702 }
604 703
605 return ptr; 704 return ptr;
… …
622 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 721 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
623 unsigned char unused; 722 unsigned char unused;
624#if EV_USE_EPOLL 723#if EV_USE_EPOLL
625 unsigned int egen; /* generation counter to counter epoll bugs */ 724 unsigned int egen; /* generation counter to counter epoll bugs */
626#endif 725#endif
627#if EV_SELECT_IS_WINSOCKET 726#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
628 SOCKET handle; 727 SOCKET handle;
728#endif
729#if EV_USE_IOCP
730 OVERLAPPED or, ow;
629#endif 731#endif
630} ANFD; 732} ANFD;
631 733
632/* stores the pending event set for a given watcher */ 734/* stores the pending event set for a given watcher */
633typedef struct 735typedef struct
… …
698# define EV_RELEASE_CB (void)0 800# define EV_RELEASE_CB (void)0
699# define EV_ACQUIRE_CB (void)0 801# define EV_ACQUIRE_CB (void)0
700# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 802# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
701#endif 803#endif
702 804
703#define EVUNLOOP_RECURSE 0x80 805#define EVBREAK_RECURSE 0x80
704 806
705/*****************************************************************************/ 807/*****************************************************************************/
706 808
707#ifndef EV_HAVE_EV_TIME 809#ifndef EV_HAVE_EV_TIME
708ev_tstamp 810ev_tstamp
… …
752 if (delay > 0.) 854 if (delay > 0.)
753 { 855 {
754#if EV_USE_NANOSLEEP 856#if EV_USE_NANOSLEEP
755 struct timespec ts; 857 struct timespec ts;
756 858
757 ts.tv_sec = (time_t)delay; 859 EV_TS_SET (ts, delay);
758 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
759
760 nanosleep (&ts, 0); 860 nanosleep (&ts, 0);
761#elif defined(_WIN32) 861#elif defined(_WIN32)
762 Sleep ((unsigned long)(delay * 1e3)); 862 Sleep ((unsigned long)(delay * 1e3));
763#else 863#else
764 struct timeval tv; 864 struct timeval tv;
765 865
766 tv.tv_sec = (time_t)delay;
767 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
768
769 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 866 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
770 /* something not guaranteed by newer posix versions, but guaranteed */ 867 /* something not guaranteed by newer posix versions, but guaranteed */
771 /* by older ones */ 868 /* by older ones */
869 EV_TV_SET (tv, delay);
772 select (0, 0, 0, 0, &tv); 870 select (0, 0, 0, 0, &tv);
773#endif 871#endif
774 } 872 }
775} 873}
776 874
875inline_speed int
876ev_timeout_to_ms (ev_tstamp timeout)
877{
878 int ms = timeout * 1000. + .999999;
879
880 return expect_true (ms) ? ms : timeout < 1e-6 ? 0 : 1;
881}
882
777/*****************************************************************************/ 883/*****************************************************************************/
778 884
779#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 885#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
780 886
781/* find a suitable new size for the given array, */ 887/* find a suitable new size for the given array, */
782/* hopefully by rounding to a ncie-to-malloc size */ 888/* hopefully by rounding to a nice-to-malloc size */
783inline_size int 889inline_size int
784array_nextsize (int elem, int cur, int cnt) 890array_nextsize (int elem, int cur, int cnt)
785{ 891{
786 int ncur = cur + 1; 892 int ncur = cur + 1;
787 893
… …
922inline_size void 1028inline_size void
923fd_reify (EV_P) 1029fd_reify (EV_P)
924{ 1030{
925 int i; 1031 int i;
926 1032
1033#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1034 for (i = 0; i < fdchangecnt; ++i)
1035 {
1036 int fd = fdchanges [i];
1037 ANFD *anfd = anfds + fd;
1038
1039 if (anfd->reify & EV__IOFDSET && anfd->head)
1040 {
1041 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1042
1043 if (handle != anfd->handle)
1044 {
1045 unsigned long arg;
1046
1047 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1048
1049 /* handle changed, but fd didn't - we need to do it in two steps */
1050 backend_modify (EV_A_ fd, anfd->events, 0);
1051 anfd->events = 0;
1052 anfd->handle = handle;
1053 }
1054 }
1055 }
1056#endif
1057
927 for (i = 0; i < fdchangecnt; ++i) 1058 for (i = 0; i < fdchangecnt; ++i)
928 { 1059 {
929 int fd = fdchanges [i]; 1060 int fd = fdchanges [i];
930 ANFD *anfd = anfds + fd; 1061 ANFD *anfd = anfds + fd;
931 ev_io *w; 1062 ev_io *w;
932 1063
933 unsigned char events = 0; 1064 unsigned char o_events = anfd->events;
1065 unsigned char o_reify = anfd->reify;
934 1066
935 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1067 anfd->reify = 0;
936 events |= (unsigned char)w->events;
937 1068
938#if EV_SELECT_IS_WINSOCKET 1069 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
939 if (events)
940 { 1070 {
941 unsigned long arg; 1071 anfd->events = 0;
942 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1072
943 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1073 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
1074 anfd->events |= (unsigned char)w->events;
1075
1076 if (o_events != anfd->events)
1077 o_reify = EV__IOFDSET; /* actually |= */
944 } 1078 }
945#endif
946 1079
947 { 1080 if (o_reify & EV__IOFDSET)
948 unsigned char o_events = anfd->events;
949 unsigned char o_reify = anfd->reify;
950
951 anfd->reify = 0;
952 anfd->events = events;
953
954 if (o_events != events || o_reify & EV__IOFDSET)
955 backend_modify (EV_A_ fd, o_events, events); 1081 backend_modify (EV_A_ fd, o_events, anfd->events);
956 }
957 } 1082 }
958 1083
959 fdchangecnt = 0; 1084 fdchangecnt = 0;
960} 1085}
961 1086
… …
1054} 1179}
1055 1180
1056/*****************************************************************************/ 1181/*****************************************************************************/
1057 1182
1058/* 1183/*
1059 * the heap functions want a real array index. array index 0 uis guaranteed to not 1184 * the heap functions want a real array index. array index 0 is guaranteed to not
1060 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 1185 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
1061 * the branching factor of the d-tree. 1186 * the branching factor of the d-tree.
1062 */ 1187 */
1063 1188
1064/* 1189/*
… …
1264 uint64_t counter = 1; 1389 uint64_t counter = 1;
1265 write (evfd, &counter, sizeof (uint64_t)); 1390 write (evfd, &counter, sizeof (uint64_t));
1266 } 1391 }
1267 else 1392 else
1268#endif 1393#endif
1394 /* win32 people keep sending patches that change this write() to send() */
1395 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1396 /* so when you think this write should be a send instead, please find out */
1397 /* where your send() is from - it's definitely not the microsoft send, and */
1398 /* tell me. thank you. */
1269 write (evpipe [1], &dummy, 1); 1399 write (evpipe [1], &dummy, 1);
1270 1400
1271 errno = old_errno; 1401 errno = old_errno;
1272 } 1402 }
1273} 1403}
… …
1287 } 1417 }
1288 else 1418 else
1289#endif 1419#endif
1290 { 1420 {
1291 char dummy; 1421 char dummy;
1422 /* see discussion in evpipe_write when you think this read should be recv in win32 */
1292 read (evpipe [0], &dummy, 1); 1423 read (evpipe [0], &dummy, 1);
1293 } 1424 }
1294 1425
1426#if EV_SIGNAL_ENABLE
1295 if (sig_pending) 1427 if (sig_pending)
1296 { 1428 {
1297 sig_pending = 0; 1429 sig_pending = 0;
1298 1430
1299 for (i = EV_NSIG - 1; i--; ) 1431 for (i = EV_NSIG - 1; i--; )
1300 if (expect_false (signals [i].pending)) 1432 if (expect_false (signals [i].pending))
1301 ev_feed_signal_event (EV_A_ i + 1); 1433 ev_feed_signal_event (EV_A_ i + 1);
1302 } 1434 }
1435#endif
1303 1436
1304#if EV_ASYNC_ENABLE 1437#if EV_ASYNC_ENABLE
1305 if (async_pending) 1438 if (async_pending)
1306 { 1439 {
1307 async_pending = 0; 1440 async_pending = 0;
… …
1316#endif 1449#endif
1317} 1450}
1318 1451
1319/*****************************************************************************/ 1452/*****************************************************************************/
1320 1453
1454void
1455ev_feed_signal (int signum)
1456{
1457#if EV_MULTIPLICITY
1458 EV_P = signals [signum - 1].loop;
1459
1460 if (!EV_A)
1461 return;
1462#endif
1463
1464 signals [signum - 1].pending = 1;
1465 evpipe_write (EV_A_ &sig_pending);
1466}
1467
1321static void 1468static void
1322ev_sighandler (int signum) 1469ev_sighandler (int signum)
1323{ 1470{
1324#if EV_MULTIPLICITY
1325 EV_P = signals [signum - 1].loop;
1326#endif
1327
1328#ifdef _WIN32 1471#ifdef _WIN32
1329 signal (signum, ev_sighandler); 1472 signal (signum, ev_sighandler);
1330#endif 1473#endif
1331 1474
1332 signals [signum - 1].pending = 1; 1475 ev_feed_signal (signum);
1333 evpipe_write (EV_A_ &sig_pending);
1334} 1476}
1335 1477
1336void noinline 1478void noinline
1337ev_feed_signal_event (EV_P_ int signum) 1479ev_feed_signal_event (EV_P_ int signum)
1338{ 1480{
… …
1438 1580
1439#endif 1581#endif
1440 1582
1441/*****************************************************************************/ 1583/*****************************************************************************/
1442 1584
1585#if EV_USE_IOCP
1586# include "ev_iocp.c"
1587#endif
1443#if EV_USE_PORT 1588#if EV_USE_PORT
1444# include "ev_port.c" 1589# include "ev_port.c"
1445#endif 1590#endif
1446#if EV_USE_KQUEUE 1591#if EV_USE_KQUEUE
1447# include "ev_kqueue.c" 1592# include "ev_kqueue.c"
… …
1507#ifdef __APPLE__ 1652#ifdef __APPLE__
1508 /* only select works correctly on that "unix-certified" platform */ 1653 /* only select works correctly on that "unix-certified" platform */
1509 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 1654 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1510 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ 1655 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1511#endif 1656#endif
1657#ifdef __FreeBSD__
1658 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
1659#endif
1512 1660
1513 return flags; 1661 return flags;
1514} 1662}
1515 1663
1516unsigned int 1664unsigned int
1517ev_embeddable_backends (void) 1665ev_embeddable_backends (void)
1518{ 1666{
1519 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 1667 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1520 1668
1521 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 1669 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1522 /* please fix it and tell me how to detect the fix */ 1670 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1523 flags &= ~EVBACKEND_EPOLL; 1671 flags &= ~EVBACKEND_EPOLL;
1524 1672
1525 return flags; 1673 return flags;
1526} 1674}
1527 1675
1528unsigned int 1676unsigned int
… …
1531 return backend; 1679 return backend;
1532} 1680}
1533 1681
1534#if EV_FEATURE_API 1682#if EV_FEATURE_API
1535unsigned int 1683unsigned int
1536ev_loop_count (EV_P) 1684ev_iteration (EV_P)
1537{ 1685{
1538 return loop_count; 1686 return loop_count;
1539} 1687}
1540 1688
1541unsigned int 1689unsigned int
1542ev_loop_depth (EV_P) 1690ev_depth (EV_P)
1543{ 1691{
1544 return loop_depth; 1692 return loop_depth;
1545} 1693}
1546 1694
1547void 1695void
… …
1584static void noinline 1732static void noinline
1585loop_init (EV_P_ unsigned int flags) 1733loop_init (EV_P_ unsigned int flags)
1586{ 1734{
1587 if (!backend) 1735 if (!backend)
1588 { 1736 {
1737 origflags = flags;
1738
1589#if EV_USE_REALTIME 1739#if EV_USE_REALTIME
1590 if (!have_realtime) 1740 if (!have_realtime)
1591 { 1741 {
1592 struct timespec ts; 1742 struct timespec ts;
1593 1743
… …
1638#endif 1788#endif
1639#if EV_USE_SIGNALFD 1789#if EV_USE_SIGNALFD
1640 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 1790 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1641#endif 1791#endif
1642 1792
1643 if (!(flags & 0x0000ffffU)) 1793 if (!(flags & EVBACKEND_MASK))
1644 flags |= ev_recommended_backends (); 1794 flags |= ev_recommended_backends ();
1645 1795
1796#if EV_USE_IOCP
1797 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
1798#endif
1646#if EV_USE_PORT 1799#if EV_USE_PORT
1647 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 1800 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1648#endif 1801#endif
1649#if EV_USE_KQUEUE 1802#if EV_USE_KQUEUE
1650 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 1803 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1667#endif 1820#endif
1668 } 1821 }
1669} 1822}
1670 1823
1671/* free up a loop structure */ 1824/* free up a loop structure */
1672static void noinline 1825void
1673loop_destroy (EV_P) 1826ev_loop_destroy (EV_P)
1674{ 1827{
1675 int i; 1828 int i;
1829
1830#if EV_MULTIPLICITY
1831 /* mimic free (0) */
1832 if (!EV_A)
1833 return;
1834#endif
1835
1836#if EV_CLEANUP_ENABLE
1837 /* queue cleanup watchers (and execute them) */
1838 if (expect_false (cleanupcnt))
1839 {
1840 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
1841 EV_INVOKE_PENDING;
1842 }
1843#endif
1844
1845#if EV_CHILD_ENABLE
1846 if (ev_is_active (&childev))
1847 {
1848 ev_ref (EV_A); /* child watcher */
1849 ev_signal_stop (EV_A_ &childev);
1850 }
1851#endif
1676 1852
1677 if (ev_is_active (&pipe_w)) 1853 if (ev_is_active (&pipe_w))
1678 { 1854 {
1679 /*ev_ref (EV_A);*/ 1855 /*ev_ref (EV_A);*/
1680 /*ev_io_stop (EV_A_ &pipe_w);*/ 1856 /*ev_io_stop (EV_A_ &pipe_w);*/
… …
1702#endif 1878#endif
1703 1879
1704 if (backend_fd >= 0) 1880 if (backend_fd >= 0)
1705 close (backend_fd); 1881 close (backend_fd);
1706 1882
1883#if EV_USE_IOCP
1884 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
1885#endif
1707#if EV_USE_PORT 1886#if EV_USE_PORT
1708 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 1887 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1709#endif 1888#endif
1710#if EV_USE_KQUEUE 1889#if EV_USE_KQUEUE
1711 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 1890 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1738 array_free (periodic, EMPTY); 1917 array_free (periodic, EMPTY);
1739#endif 1918#endif
1740#if EV_FORK_ENABLE 1919#if EV_FORK_ENABLE
1741 array_free (fork, EMPTY); 1920 array_free (fork, EMPTY);
1742#endif 1921#endif
1922#if EV_CLEANUP_ENABLE
1923 array_free (cleanup, EMPTY);
1924#endif
1743 array_free (prepare, EMPTY); 1925 array_free (prepare, EMPTY);
1744 array_free (check, EMPTY); 1926 array_free (check, EMPTY);
1745#if EV_ASYNC_ENABLE 1927#if EV_ASYNC_ENABLE
1746 array_free (async, EMPTY); 1928 array_free (async, EMPTY);
1747#endif 1929#endif
1748 1930
1749 backend = 0; 1931 backend = 0;
1932
1933#if EV_MULTIPLICITY
1934 if (ev_is_default_loop (EV_A))
1935#endif
1936 ev_default_loop_ptr = 0;
1937#if EV_MULTIPLICITY
1938 else
1939 ev_free (EV_A);
1940#endif
1750} 1941}
1751 1942
1752#if EV_USE_INOTIFY 1943#if EV_USE_INOTIFY
1753inline_size void infy_fork (EV_P); 1944inline_size void infy_fork (EV_P);
1754#endif 1945#endif
… …
1813 loop_init (EV_A_ flags); 2004 loop_init (EV_A_ flags);
1814 2005
1815 if (ev_backend (EV_A)) 2006 if (ev_backend (EV_A))
1816 return EV_A; 2007 return EV_A;
1817 2008
2009 ev_free (EV_A);
1818 return 0; 2010 return 0;
1819} 2011}
1820 2012
1821void
1822ev_loop_destroy (EV_P)
1823{
1824 loop_destroy (EV_A);
1825 ev_free (loop);
1826}
1827
1828void
1829ev_loop_fork (EV_P)
1830{
1831 postfork = 1; /* must be in line with ev_default_fork */
1832}
1833#endif /* multiplicity */ 2013#endif /* multiplicity */
1834 2014
1835#if EV_VERIFY 2015#if EV_VERIFY
1836static void noinline 2016static void noinline
1837verify_watcher (EV_P_ W w) 2017verify_watcher (EV_P_ W w)
… …
1868} 2048}
1869#endif 2049#endif
1870 2050
1871#if EV_FEATURE_API 2051#if EV_FEATURE_API
1872void 2052void
1873ev_loop_verify (EV_P) 2053ev_verify (EV_P)
1874{ 2054{
1875#if EV_VERIFY 2055#if EV_VERIFY
1876 int i; 2056 int i;
1877 WL w; 2057 WL w;
1878 2058
… …
1912#if EV_FORK_ENABLE 2092#if EV_FORK_ENABLE
1913 assert (forkmax >= forkcnt); 2093 assert (forkmax >= forkcnt);
1914 array_verify (EV_A_ (W *)forks, forkcnt); 2094 array_verify (EV_A_ (W *)forks, forkcnt);
1915#endif 2095#endif
1916 2096
2097#if EV_CLEANUP_ENABLE
2098 assert (cleanupmax >= cleanupcnt);
2099 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2100#endif
2101
1917#if EV_ASYNC_ENABLE 2102#if EV_ASYNC_ENABLE
1918 assert (asyncmax >= asynccnt); 2103 assert (asyncmax >= asynccnt);
1919 array_verify (EV_A_ (W *)asyncs, asynccnt); 2104 array_verify (EV_A_ (W *)asyncs, asynccnt);
1920#endif 2105#endif
1921 2106
… …
1939} 2124}
1940#endif 2125#endif
1941 2126
1942#if EV_MULTIPLICITY 2127#if EV_MULTIPLICITY
1943struct ev_loop * 2128struct ev_loop *
1944ev_default_loop_init (unsigned int flags)
1945#else 2129#else
1946int 2130int
2131#endif
1947ev_default_loop (unsigned int flags) 2132ev_default_loop (unsigned int flags)
1948#endif
1949{ 2133{
1950 if (!ev_default_loop_ptr) 2134 if (!ev_default_loop_ptr)
1951 { 2135 {
1952#if EV_MULTIPLICITY 2136#if EV_MULTIPLICITY
1953 EV_P = ev_default_loop_ptr = &default_loop_struct; 2137 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
1972 2156
1973 return ev_default_loop_ptr; 2157 return ev_default_loop_ptr;
1974} 2158}
1975 2159
1976void 2160void
1977ev_default_destroy (void) 2161ev_loop_fork (EV_P)
1978{ 2162{
1979#if EV_MULTIPLICITY
1980 EV_P = ev_default_loop_ptr;
1981#endif
1982
1983 ev_default_loop_ptr = 0;
1984
1985#if EV_CHILD_ENABLE
1986 ev_ref (EV_A); /* child watcher */
1987 ev_signal_stop (EV_A_ &childev);
1988#endif
1989
1990 loop_destroy (EV_A);
1991}
1992
1993void
1994ev_default_fork (void)
1995{
1996#if EV_MULTIPLICITY
1997 EV_P = ev_default_loop_ptr;
1998#endif
1999
2000 postfork = 1; /* must be in line with ev_loop_fork */ 2163 postfork = 1; /* must be in line with ev_default_fork */
2001} 2164}
2002 2165
2003/*****************************************************************************/ 2166/*****************************************************************************/
2004 2167
2005void 2168void
… …
2027 2190
2028 for (pri = NUMPRI; pri--; ) 2191 for (pri = NUMPRI; pri--; )
2029 while (pendingcnt [pri]) 2192 while (pendingcnt [pri])
2030 { 2193 {
2031 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2194 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
2032
2033 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
2034 /* ^ this is no longer true, as pending_w could be here */
2035 2195
2036 p->w->pending = 0; 2196 p->w->pending = 0;
2037 EV_CB_INVOKE (p->w, p->events); 2197 EV_CB_INVOKE (p->w, p->events);
2038 EV_FREQUENT_CHECK; 2198 EV_FREQUENT_CHECK;
2039 } 2199 }
… …
2096 EV_FREQUENT_CHECK; 2256 EV_FREQUENT_CHECK;
2097 feed_reverse (EV_A_ (W)w); 2257 feed_reverse (EV_A_ (W)w);
2098 } 2258 }
2099 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 2259 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
2100 2260
2101 feed_reverse_done (EV_A_ EV_TIMEOUT); 2261 feed_reverse_done (EV_A_ EV_TIMER);
2102 } 2262 }
2103} 2263}
2104 2264
2105#if EV_PERIODIC_ENABLE 2265#if EV_PERIODIC_ENABLE
2266
2267static void noinline
2268periodic_recalc (EV_P_ ev_periodic *w)
2269{
2270 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2271 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2272
2273 /* the above almost always errs on the low side */
2274 while (at <= ev_rt_now)
2275 {
2276 ev_tstamp nat = at + w->interval;
2277
2278 /* when resolution fails us, we use ev_rt_now */
2279 if (expect_false (nat == at))
2280 {
2281 at = ev_rt_now;
2282 break;
2283 }
2284
2285 at = nat;
2286 }
2287
2288 ev_at (w) = at;
2289}
2290
2106/* make periodics pending */ 2291/* make periodics pending */
2107inline_size void 2292inline_size void
2108periodics_reify (EV_P) 2293periodics_reify (EV_P)
2109{ 2294{
2110 EV_FREQUENT_CHECK; 2295 EV_FREQUENT_CHECK;
… …
2129 ANHE_at_cache (periodics [HEAP0]); 2314 ANHE_at_cache (periodics [HEAP0]);
2130 downheap (periodics, periodiccnt, HEAP0); 2315 downheap (periodics, periodiccnt, HEAP0);
2131 } 2316 }
2132 else if (w->interval) 2317 else if (w->interval)
2133 { 2318 {
2134 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2319 periodic_recalc (EV_A_ w);
2135 /* if next trigger time is not sufficiently in the future, put it there */
2136 /* this might happen because of floating point inexactness */
2137 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2138 {
2139 ev_at (w) += w->interval;
2140
2141 /* if interval is unreasonably low we might still have a time in the past */
2142 /* so correct this. this will make the periodic very inexact, but the user */
2143 /* has effectively asked to get triggered more often than possible */
2144 if (ev_at (w) < ev_rt_now)
2145 ev_at (w) = ev_rt_now;
2146 }
2147
2148 ANHE_at_cache (periodics [HEAP0]); 2320 ANHE_at_cache (periodics [HEAP0]);
2149 downheap (periodics, periodiccnt, HEAP0); 2321 downheap (periodics, periodiccnt, HEAP0);
2150 } 2322 }
2151 else 2323 else
2152 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 2324 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
2159 feed_reverse_done (EV_A_ EV_PERIODIC); 2331 feed_reverse_done (EV_A_ EV_PERIODIC);
2160 } 2332 }
2161} 2333}
2162 2334
2163/* simply recalculate all periodics */ 2335/* simply recalculate all periodics */
2164/* TODO: maybe ensure that at leats one event happens when jumping forward? */ 2336/* TODO: maybe ensure that at least one event happens when jumping forward? */
2165static void noinline 2337static void noinline
2166periodics_reschedule (EV_P) 2338periodics_reschedule (EV_P)
2167{ 2339{
2168 int i; 2340 int i;
2169 2341
… …
2173 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 2345 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2174 2346
2175 if (w->reschedule_cb) 2347 if (w->reschedule_cb)
2176 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2348 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2177 else if (w->interval) 2349 else if (w->interval)
2178 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2350 periodic_recalc (EV_A_ w);
2179 2351
2180 ANHE_at_cache (periodics [i]); 2352 ANHE_at_cache (periodics [i]);
2181 } 2353 }
2182 2354
2183 reheap (periodics, periodiccnt); 2355 reheap (periodics, periodiccnt);
… …
2230 * doesn't hurt either as we only do this on time-jumps or 2402 * doesn't hurt either as we only do this on time-jumps or
2231 * in the unlikely event of having been preempted here. 2403 * in the unlikely event of having been preempted here.
2232 */ 2404 */
2233 for (i = 4; --i; ) 2405 for (i = 4; --i; )
2234 { 2406 {
2407 ev_tstamp diff;
2235 rtmn_diff = ev_rt_now - mn_now; 2408 rtmn_diff = ev_rt_now - mn_now;
2236 2409
2410 diff = odiff - rtmn_diff;
2411
2237 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 2412 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2238 return; /* all is well */ 2413 return; /* all is well */
2239 2414
2240 ev_rt_now = ev_time (); 2415 ev_rt_now = ev_time ();
2241 mn_now = get_clock (); 2416 mn_now = get_clock ();
2242 now_floor = mn_now; 2417 now_floor = mn_now;
… …
2265 mn_now = ev_rt_now; 2440 mn_now = ev_rt_now;
2266 } 2441 }
2267} 2442}
2268 2443
2269void 2444void
2270ev_loop (EV_P_ int flags) 2445ev_run (EV_P_ int flags)
2271{ 2446{
2272#if EV_FEATURE_API 2447#if EV_FEATURE_API
2273 ++loop_depth; 2448 ++loop_depth;
2274#endif 2449#endif
2275 2450
2276 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE)); 2451 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2277 2452
2278 loop_done = EVUNLOOP_CANCEL; 2453 loop_done = EVBREAK_CANCEL;
2279 2454
2280 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ 2455 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2281 2456
2282 do 2457 do
2283 { 2458 {
2284#if EV_VERIFY >= 2 2459#if EV_VERIFY >= 2
2285 ev_loop_verify (EV_A); 2460 ev_verify (EV_A);
2286#endif 2461#endif
2287 2462
2288#ifndef _WIN32 2463#ifndef _WIN32
2289 if (expect_false (curpid)) /* penalise the forking check even more */ 2464 if (expect_false (curpid)) /* penalise the forking check even more */
2290 if (expect_false (getpid () != curpid)) 2465 if (expect_false (getpid () != curpid))
… …
2326 /* calculate blocking time */ 2501 /* calculate blocking time */
2327 { 2502 {
2328 ev_tstamp waittime = 0.; 2503 ev_tstamp waittime = 0.;
2329 ev_tstamp sleeptime = 0.; 2504 ev_tstamp sleeptime = 0.;
2330 2505
2506 /* remember old timestamp for io_blocktime calculation */
2507 ev_tstamp prev_mn_now = mn_now;
2508
2509 /* update time to cancel out callback processing overhead */
2510 time_update (EV_A_ 1e100);
2511
2331 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2512 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt)))
2332 { 2513 {
2333 /* remember old timestamp for io_blocktime calculation */
2334 ev_tstamp prev_mn_now = mn_now;
2335
2336 /* update time to cancel out callback processing overhead */
2337 time_update (EV_A_ 1e100);
2338
2339 waittime = MAX_BLOCKTIME; 2514 waittime = MAX_BLOCKTIME;
2340 2515
2341 if (timercnt) 2516 if (timercnt)
2342 { 2517 {
2343 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 2518 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
… …
2373 } 2548 }
2374 2549
2375#if EV_FEATURE_API 2550#if EV_FEATURE_API
2376 ++loop_count; 2551 ++loop_count;
2377#endif 2552#endif
2378 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ 2553 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2379 backend_poll (EV_A_ waittime); 2554 backend_poll (EV_A_ waittime);
2380 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */ 2555 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2381 2556
2382 /* update ev_rt_now, do magic */ 2557 /* update ev_rt_now, do magic */
2383 time_update (EV_A_ waittime + sleeptime); 2558 time_update (EV_A_ waittime + sleeptime);
2384 } 2559 }
2385 2560
… …
2403 EV_INVOKE_PENDING; 2578 EV_INVOKE_PENDING;
2404 } 2579 }
2405 while (expect_true ( 2580 while (expect_true (
2406 activecnt 2581 activecnt
2407 && !loop_done 2582 && !loop_done
2408 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 2583 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2409 )); 2584 ));
2410 2585
2411 if (loop_done == EVUNLOOP_ONE) 2586 if (loop_done == EVBREAK_ONE)
2412 loop_done = EVUNLOOP_CANCEL; 2587 loop_done = EVBREAK_CANCEL;
2413 2588
2414#if EV_FEATURE_API 2589#if EV_FEATURE_API
2415 --loop_depth; 2590 --loop_depth;
2416#endif 2591#endif
2417} 2592}
2418 2593
2419void 2594void
2420ev_unloop (EV_P_ int how) 2595ev_break (EV_P_ int how)
2421{ 2596{
2422 loop_done = how; 2597 loop_done = how;
2423} 2598}
2424 2599
2425void 2600void
… …
2573 EV_FREQUENT_CHECK; 2748 EV_FREQUENT_CHECK;
2574 2749
2575 wlist_del (&anfds[w->fd].head, (WL)w); 2750 wlist_del (&anfds[w->fd].head, (WL)w);
2576 ev_stop (EV_A_ (W)w); 2751 ev_stop (EV_A_ (W)w);
2577 2752
2578 fd_change (EV_A_ w->fd, 1); 2753 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2579 2754
2580 EV_FREQUENT_CHECK; 2755 EV_FREQUENT_CHECK;
2581} 2756}
2582 2757
2583void noinline 2758void noinline
… …
2675 if (w->reschedule_cb) 2850 if (w->reschedule_cb)
2676 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2851 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2677 else if (w->interval) 2852 else if (w->interval)
2678 { 2853 {
2679 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 2854 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2680 /* this formula differs from the one in periodic_reify because we do not always round up */ 2855 periodic_recalc (EV_A_ w);
2681 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2682 } 2856 }
2683 else 2857 else
2684 ev_at (w) = w->offset; 2858 ev_at (w) = w->offset;
2685 2859
2686 EV_FREQUENT_CHECK; 2860 EV_FREQUENT_CHECK;
… …
2807 sa.sa_handler = ev_sighandler; 2981 sa.sa_handler = ev_sighandler;
2808 sigfillset (&sa.sa_mask); 2982 sigfillset (&sa.sa_mask);
2809 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 2983 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2810 sigaction (w->signum, &sa, 0); 2984 sigaction (w->signum, &sa, 0);
2811 2985
2986 if (origflags & EVFLAG_NOSIGMASK)
2987 {
2812 sigemptyset (&sa.sa_mask); 2988 sigemptyset (&sa.sa_mask);
2813 sigaddset (&sa.sa_mask, w->signum); 2989 sigaddset (&sa.sa_mask, w->signum);
2814 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); 2990 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
2991 }
2815#endif 2992#endif
2816 } 2993 }
2817 2994
2818 EV_FREQUENT_CHECK; 2995 EV_FREQUENT_CHECK;
2819} 2996}
… …
2960 if (!pend || pend == path) 3137 if (!pend || pend == path)
2961 break; 3138 break;
2962 3139
2963 *pend = 0; 3140 *pend = 0;
2964 w->wd = inotify_add_watch (fs_fd, path, mask); 3141 w->wd = inotify_add_watch (fs_fd, path, mask);
2965 } 3142 }
2966 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3143 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2967 } 3144 }
2968 } 3145 }
2969 3146
2970 if (w->wd >= 0) 3147 if (w->wd >= 0)
… …
3035 { 3212 {
3036 struct inotify_event *ev = (struct inotify_event *)(buf + ofs); 3213 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
3037 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3214 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3038 ofs += sizeof (struct inotify_event) + ev->len; 3215 ofs += sizeof (struct inotify_event) + ev->len;
3039 } 3216 }
3040}
3041
3042inline_size unsigned int
3043ev_linux_version (void)
3044{
3045 struct utsname buf;
3046 unsigned int v;
3047 int i;
3048 char *p = buf.release;
3049
3050 if (uname (&buf))
3051 return 0;
3052
3053 for (i = 3+1; --i; )
3054 {
3055 unsigned int c = 0;
3056
3057 for (;;)
3058 {
3059 if (*p >= '0' && *p <= '9')
3060 c = c * 10 + *p++ - '0';
3061 else
3062 {
3063 p += *p == '.';
3064 break;
3065 }
3066 }
3067
3068 v = (v << 8) | c;
3069 }
3070
3071 return v;
3072} 3217}
3073 3218
3074inline_size void 3219inline_size void
3075ev_check_2625 (EV_P) 3220ev_check_2625 (EV_P)
3076{ 3221{
… …
3400 3545
3401#if EV_EMBED_ENABLE 3546#if EV_EMBED_ENABLE
3402void noinline 3547void noinline
3403ev_embed_sweep (EV_P_ ev_embed *w) 3548ev_embed_sweep (EV_P_ ev_embed *w)
3404{ 3549{
3405 ev_loop (w->other, EVLOOP_NONBLOCK); 3550 ev_run (w->other, EVRUN_NOWAIT);
3406} 3551}
3407 3552
3408static void 3553static void
3409embed_io_cb (EV_P_ ev_io *io, int revents) 3554embed_io_cb (EV_P_ ev_io *io, int revents)
3410{ 3555{
3411 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 3556 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3412 3557
3413 if (ev_cb (w)) 3558 if (ev_cb (w))
3414 ev_feed_event (EV_A_ (W)w, EV_EMBED); 3559 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3415 else 3560 else
3416 ev_loop (w->other, EVLOOP_NONBLOCK); 3561 ev_run (w->other, EVRUN_NOWAIT);
3417} 3562}
3418 3563
3419static void 3564static void
3420embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 3565embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3421{ 3566{
… …
3425 EV_P = w->other; 3570 EV_P = w->other;
3426 3571
3427 while (fdchangecnt) 3572 while (fdchangecnt)
3428 { 3573 {
3429 fd_reify (EV_A); 3574 fd_reify (EV_A);
3430 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3575 ev_run (EV_A_ EVRUN_NOWAIT);
3431 } 3576 }
3432 } 3577 }
3433} 3578}
3434 3579
3435static void 3580static void
… …
3441 3586
3442 { 3587 {
3443 EV_P = w->other; 3588 EV_P = w->other;
3444 3589
3445 ev_loop_fork (EV_A); 3590 ev_loop_fork (EV_A);
3446 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3591 ev_run (EV_A_ EVRUN_NOWAIT);
3447 } 3592 }
3448 3593
3449 ev_embed_start (EV_A_ w); 3594 ev_embed_start (EV_A_ w);
3450} 3595}
3451 3596
… …
3543 3688
3544 EV_FREQUENT_CHECK; 3689 EV_FREQUENT_CHECK;
3545} 3690}
3546#endif 3691#endif
3547 3692
3548#if EV_ASYNC_ENABLE 3693#if EV_CLEANUP_ENABLE
3549void 3694void
3550ev_async_start (EV_P_ ev_async *w) 3695ev_cleanup_start (EV_P_ ev_cleanup *w)
3551{ 3696{
3552 if (expect_false (ev_is_active (w))) 3697 if (expect_false (ev_is_active (w)))
3553 return; 3698 return;
3699
3700 EV_FREQUENT_CHECK;
3701
3702 ev_start (EV_A_ (W)w, ++cleanupcnt);
3703 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
3704 cleanups [cleanupcnt - 1] = w;
3705
3706 /* cleanup watchers should never keep a refcount on the loop */
3707 ev_unref (EV_A);
3708 EV_FREQUENT_CHECK;
3709}
3710
3711void
3712ev_cleanup_stop (EV_P_ ev_cleanup *w)
3713{
3714 clear_pending (EV_A_ (W)w);
3715 if (expect_false (!ev_is_active (w)))
3716 return;
3717
3718 EV_FREQUENT_CHECK;
3719 ev_ref (EV_A);
3720
3721 {
3722 int active = ev_active (w);
3723
3724 cleanups [active - 1] = cleanups [--cleanupcnt];
3725 ev_active (cleanups [active - 1]) = active;
3726 }
3727
3728 ev_stop (EV_A_ (W)w);
3729
3730 EV_FREQUENT_CHECK;
3731}
3732#endif
3733
3734#if EV_ASYNC_ENABLE
3735void
3736ev_async_start (EV_P_ ev_async *w)
3737{
3738 if (expect_false (ev_is_active (w)))
3739 return;
3740
3741 w->sent = 0;
3554 3742
3555 evpipe_init (EV_A); 3743 evpipe_init (EV_A);
3556 3744
3557 EV_FREQUENT_CHECK; 3745 EV_FREQUENT_CHECK;
3558 3746
… …
3636{ 3824{
3637 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 3825 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3638 3826
3639 if (expect_false (!once)) 3827 if (expect_false (!once))
3640 { 3828 {
3641 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 3829 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3642 return; 3830 return;
3643 } 3831 }
3644 3832
3645 once->cb = cb; 3833 once->cb = cb;
3646 once->arg = arg; 3834 once->arg = arg;
… …
3778 3966
3779#if EV_MULTIPLICITY 3967#if EV_MULTIPLICITY
3780 #include "ev_wrap.h" 3968 #include "ev_wrap.h"
3781#endif 3969#endif
3782 3970
3783#ifdef __cplusplus 3971EV_CPP(})
3784}
3785#endif
3786 3972

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