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Comparing libev/ev.c (file contents):
Revision 1.342 by root, Mon Mar 29 12:40:57 2010 UTC vs.
Revision 1.391 by root, Thu Aug 4 13:57:16 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_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) */
457 465
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)
468
469/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
470/* ECB.H BEGIN */
471/*
472 * libecb - http://software.schmorp.de/pkg/libecb
473 *
474 * Copyright (©) 2009-2011 Marc Alexander Lehmann <libecb@schmorp.de>
475 * Copyright (©) 2011 Emanuele Giaquinta
476 * All rights reserved.
477 *
478 * Redistribution and use in source and binary forms, with or without modifica-
479 * tion, are permitted provided that the following conditions are met:
480 *
481 * 1. Redistributions of source code must retain the above copyright notice,
482 * this list of conditions and the following disclaimer.
483 *
484 * 2. Redistributions in binary form must reproduce the above copyright
485 * notice, this list of conditions and the following disclaimer in the
486 * documentation and/or other materials provided with the distribution.
487 *
488 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
489 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
490 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
491 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
492 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
493 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
494 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
495 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
496 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
497 * OF THE POSSIBILITY OF SUCH DAMAGE.
498 */
499
500#ifndef ECB_H
501#define ECB_H
502
503#ifdef _WIN32
504 typedef signed char int8_t;
505 typedef unsigned char uint8_t;
506 typedef signed short int16_t;
507 typedef unsigned short uint16_t;
508 typedef signed int int32_t;
509 typedef unsigned int uint32_t;
458#if __GNUC__ >= 4 510 #if __GNUC__
459# define expect(expr,value) __builtin_expect ((expr),(value)) 511 typedef signed long long int64_t;
460# define noinline __attribute__ ((noinline)) 512 typedef unsigned long long uint64_t;
513 #else /* _MSC_VER || __BORLANDC__ */
514 typedef signed __int64 int64_t;
515 typedef unsigned __int64 uint64_t;
516 #endif
461#else 517#else
462# define expect(expr,value) (expr) 518 #include <inttypes.h>
463# define noinline
464# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
465# define inline
466# endif 519#endif
520
521/* many compilers define _GNUC_ to some versions but then only implement
522 * what their idiot authors think are the "more important" extensions,
523 * causing enormous grief in return for some better fake benchmark numbers.
524 * or so.
525 * we try to detect these and simply assume they are not gcc - if they have
526 * an issue with that they should have done it right in the first place.
527 */
528#ifndef ECB_GCC_VERSION
529 #if !defined(__GNUC_MINOR__) || defined(__INTEL_COMPILER) || defined(__SUNPRO_C) || defined(__SUNPRO_CC) || defined(__llvm__) || defined(__clang__)
530 #define ECB_GCC_VERSION(major,minor) 0
531 #else
532 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
467#endif 533 #endif
534#endif
468 535
536/*****************************************************************************/
537
538/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
539/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
540
541#if ECB_NO_THREADS || ECB_NO_SMP
542 #define ECB_MEMORY_FENCE do { } while (0)
543 #define ECB_MEMORY_FENCE_ACQUIRE do { } while (0)
544 #define ECB_MEMORY_FENCE_RELEASE do { } while (0)
545#endif
546
547#ifndef ECB_MEMORY_FENCE
548 #if ECB_GCC_VERSION(2,5)
549 #if __x86
550 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
551 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE /* non-lock xchg might be enough */
552 #define ECB_MEMORY_FENCE_RELEASE do { } while (0) /* unlikely to change in future cpus */
553 #elif __amd64
554 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
555 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("lfence" : : : "memory")
556 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("sfence") /* play safe - not needed in any current cpu */
557 #endif
558 #endif
559#endif
560
561#ifndef ECB_MEMORY_FENCE
562 #if ECB_GCC_VERSION(4,4)
563 #define ECB_MEMORY_FENCE __sync_synchronize ()
564 #define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); })
565 #define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); })
566 #elif _MSC_VER >= 1400 /* VC++ 2005 */
567 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
568 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
569 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
570 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
571 #elif defined(_WIN32)
572 #include <WinNT.h>
573 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
574 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
575 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
576 #endif
577#endif
578
579#ifndef ECB_MEMORY_FENCE
580 /*
581 * if you get undefined symbol references to pthread_mutex_lock,
582 * or failure to find pthread.h, then you should implement
583 * the ECB_MEMORY_FENCE operations for your cpu/compiler
584 * OR provide pthread.h and link against the posix thread library
585 * of your system.
586 */
587 #include <pthread.h>
588 #define ECB_NEEDS_PTHREADS 1
589 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
590
591 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
592 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
593 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
594 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
595#endif
596
597/*****************************************************************************/
598
599#define ECB_C99 (__STDC_VERSION__ >= 199901L)
600
601#if __cplusplus
602 #define ecb_inline static inline
603#elif ECB_GCC_VERSION(2,5)
604 #define ecb_inline static __inline__
605#elif ECB_C99
606 #define ecb_inline static inline
607#else
608 #define ecb_inline static
609#endif
610
611#if ECB_GCC_VERSION(3,3)
612 #define ecb_restrict __restrict__
613#elif ECB_C99
614 #define ecb_restrict restrict
615#else
616 #define ecb_restrict
617#endif
618
619typedef int ecb_bool;
620
621#define ECB_CONCAT_(a, b) a ## b
622#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
623#define ECB_STRINGIFY_(a) # a
624#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
625
626#define ecb_function_ ecb_inline
627
628#if ECB_GCC_VERSION(3,1)
629 #define ecb_attribute(attrlist) __attribute__(attrlist)
630 #define ecb_is_constant(expr) __builtin_constant_p (expr)
631 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
632 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
633#else
634 #define ecb_attribute(attrlist)
635 #define ecb_is_constant(expr) 0
636 #define ecb_expect(expr,value) (expr)
637 #define ecb_prefetch(addr,rw,locality)
638#endif
639
640/* no emulation for ecb_decltype */
641#if ECB_GCC_VERSION(4,5)
642 #define ecb_decltype(x) __decltype(x)
643#elif ECB_GCC_VERSION(3,0)
644 #define ecb_decltype(x) __typeof(x)
645#endif
646
647#define ecb_noinline ecb_attribute ((__noinline__))
648#define ecb_noreturn ecb_attribute ((__noreturn__))
649#define ecb_unused ecb_attribute ((__unused__))
650#define ecb_const ecb_attribute ((__const__))
651#define ecb_pure ecb_attribute ((__pure__))
652
653#if ECB_GCC_VERSION(4,3)
654 #define ecb_artificial ecb_attribute ((__artificial__))
655 #define ecb_hot ecb_attribute ((__hot__))
656 #define ecb_cold ecb_attribute ((__cold__))
657#else
658 #define ecb_artificial
659 #define ecb_hot
660 #define ecb_cold
661#endif
662
663/* put around conditional expressions if you are very sure that the */
664/* expression is mostly true or mostly false. note that these return */
665/* booleans, not the expression. */
469#define expect_false(expr) expect ((expr) != 0, 0) 666#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
470#define expect_true(expr) expect ((expr) != 0, 1) 667#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
668/* for compatibility to the rest of the world */
669#define ecb_likely(expr) ecb_expect_true (expr)
670#define ecb_unlikely(expr) ecb_expect_false (expr)
671
672/* count trailing zero bits and count # of one bits */
673#if ECB_GCC_VERSION(3,4)
674 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
675 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
676 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
677 #define ecb_ctz32(x) __builtin_ctz (x)
678 #define ecb_ctz64(x) __builtin_ctzll (x)
679 #define ecb_popcount32(x) __builtin_popcount (x)
680 /* no popcountll */
681#else
682 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const;
683 ecb_function_ int
684 ecb_ctz32 (uint32_t x)
685 {
686 int r = 0;
687
688 x &= ~x + 1; /* this isolates the lowest bit */
689
690#if ECB_branchless_on_i386
691 r += !!(x & 0xaaaaaaaa) << 0;
692 r += !!(x & 0xcccccccc) << 1;
693 r += !!(x & 0xf0f0f0f0) << 2;
694 r += !!(x & 0xff00ff00) << 3;
695 r += !!(x & 0xffff0000) << 4;
696#else
697 if (x & 0xaaaaaaaa) r += 1;
698 if (x & 0xcccccccc) r += 2;
699 if (x & 0xf0f0f0f0) r += 4;
700 if (x & 0xff00ff00) r += 8;
701 if (x & 0xffff0000) r += 16;
702#endif
703
704 return r;
705 }
706
707 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const;
708 ecb_function_ int
709 ecb_ctz64 (uint64_t x)
710 {
711 int shift = x & 0xffffffffU ? 0 : 32;
712 return ecb_ctz32 (x >> shift) + shift;
713 }
714
715 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const;
716 ecb_function_ int
717 ecb_popcount32 (uint32_t x)
718 {
719 x -= (x >> 1) & 0x55555555;
720 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
721 x = ((x >> 4) + x) & 0x0f0f0f0f;
722 x *= 0x01010101;
723
724 return x >> 24;
725 }
726
727 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const;
728 ecb_function_ int ecb_ld32 (uint32_t x)
729 {
730 int r = 0;
731
732 if (x >> 16) { x >>= 16; r += 16; }
733 if (x >> 8) { x >>= 8; r += 8; }
734 if (x >> 4) { x >>= 4; r += 4; }
735 if (x >> 2) { x >>= 2; r += 2; }
736 if (x >> 1) { r += 1; }
737
738 return r;
739 }
740
741 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const;
742 ecb_function_ int ecb_ld64 (uint64_t x)
743 {
744 int r = 0;
745
746 if (x >> 32) { x >>= 32; r += 32; }
747
748 return r + ecb_ld32 (x);
749 }
750#endif
751
752/* popcount64 is only available on 64 bit cpus as gcc builtin */
753/* so for this version we are lazy */
754ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const;
755ecb_function_ int
756ecb_popcount64 (uint64_t x)
757{
758 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
759}
760
761ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const;
762ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const;
763ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const;
764ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const;
765ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const;
766ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const;
767ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const;
768ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const;
769
770ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
771ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
772ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
773ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
774ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
775ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
776ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
777ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
778
779#if ECB_GCC_VERSION(4,3)
780 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
781 #define ecb_bswap32(x) __builtin_bswap32 (x)
782 #define ecb_bswap64(x) __builtin_bswap64 (x)
783#else
784 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const;
785 ecb_function_ uint16_t
786 ecb_bswap16 (uint16_t x)
787 {
788 return ecb_rotl16 (x, 8);
789 }
790
791 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const;
792 ecb_function_ uint32_t
793 ecb_bswap32 (uint32_t x)
794 {
795 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
796 }
797
798 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const;
799 ecb_function_ uint64_t
800 ecb_bswap64 (uint64_t x)
801 {
802 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
803 }
804#endif
805
806#if ECB_GCC_VERSION(4,5)
807 #define ecb_unreachable() __builtin_unreachable ()
808#else
809 /* this seems to work fine, but gcc always emits a warning for it :/ */
810 ecb_function_ void ecb_unreachable (void) ecb_noreturn;
811 ecb_function_ void ecb_unreachable (void) { }
812#endif
813
814/* try to tell the compiler that some condition is definitely true */
815#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0)
816
817ecb_function_ unsigned char ecb_byteorder_helper (void) ecb_const;
818ecb_function_ unsigned char
819ecb_byteorder_helper (void)
820{
821 const uint32_t u = 0x11223344;
822 return *(unsigned char *)&u;
823}
824
825ecb_function_ ecb_bool ecb_big_endian (void) ecb_const;
826ecb_function_ ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
827ecb_function_ ecb_bool ecb_little_endian (void) ecb_const;
828ecb_function_ ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }
829
830#if ECB_GCC_VERSION(3,0) || ECB_C99
831 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
832#else
833 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
834#endif
835
836#if ecb_cplusplus_does_not_suck
837 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
838 template<typename T, int N>
839 static inline int ecb_array_length (const T (&arr)[N])
840 {
841 return N;
842 }
843#else
844 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
845#endif
846
847#endif
848
849/* ECB.H END */
850
851#define expect_false(cond) ecb_expect_false (cond)
852#define expect_true(cond) ecb_expect_true (cond)
853#define noinline ecb_noinline
854
471#define inline_size static inline 855#define inline_size ecb_inline
472 856
473#if EV_FEATURE_CODE 857#if EV_FEATURE_CODE
474# define inline_speed static inline 858# define inline_speed ecb_inline
475#else 859#else
476# define inline_speed static noinline 860# define inline_speed static noinline
477#endif 861#endif
478 862
479#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 863#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
… …
494#define ev_active(w) ((W)(w))->active 878#define ev_active(w) ((W)(w))->active
495#define ev_at(w) ((WT)(w))->at 879#define ev_at(w) ((WT)(w))->at
496 880
497#if EV_USE_REALTIME 881#if EV_USE_REALTIME
498/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 882/* 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 */ 883/* giving it a reasonably high chance of working on typical architectures */
500static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 884static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
501#endif 885#endif
502 886
503#if EV_USE_MONOTONIC 887#if EV_USE_MONOTONIC
504static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 888static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
… …
518# include "ev_win32.c" 902# include "ev_win32.c"
519#endif 903#endif
520 904
521/*****************************************************************************/ 905/*****************************************************************************/
522 906
907/* define a suitable floor function (only used by periodics atm) */
908
909#if EV_USE_FLOOR
910# include <math.h>
911# define ev_floor(v) floor (v)
912#else
913
914#include <float.h>
915
916/* a floor() replacement function, should be independent of ev_tstamp type */
917static ev_tstamp noinline
918ev_floor (ev_tstamp v)
919{
920 /* the choice of shift factor is not terribly important */
921#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
922 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
923#else
924 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
925#endif
926
927 /* argument too large for an unsigned long? */
928 if (expect_false (v >= shift))
929 {
930 ev_tstamp f;
931
932 if (v == v - 1.)
933 return v; /* very large number */
934
935 f = shift * ev_floor (v * (1. / shift));
936 return f + ev_floor (v - f);
937 }
938
939 /* special treatment for negative args? */
940 if (expect_false (v < 0.))
941 {
942 ev_tstamp f = -ev_floor (-v);
943
944 return f - (f == v ? 0 : 1);
945 }
946
947 /* fits into an unsigned long */
948 return (unsigned long)v;
949}
950
951#endif
952
953/*****************************************************************************/
954
955#ifdef __linux
956# include <sys/utsname.h>
957#endif
958
959static unsigned int noinline ecb_cold
960ev_linux_version (void)
961{
962#ifdef __linux
963 unsigned int v = 0;
964 struct utsname buf;
965 int i;
966 char *p = buf.release;
967
968 if (uname (&buf))
969 return 0;
970
971 for (i = 3+1; --i; )
972 {
973 unsigned int c = 0;
974
975 for (;;)
976 {
977 if (*p >= '0' && *p <= '9')
978 c = c * 10 + *p++ - '0';
979 else
980 {
981 p += *p == '.';
982 break;
983 }
984 }
985
986 v = (v << 8) | c;
987 }
988
989 return v;
990#else
991 return 0;
992#endif
993}
994
995/*****************************************************************************/
996
523#if EV_AVOID_STDIO 997#if EV_AVOID_STDIO
524static void noinline 998static void noinline ecb_cold
525ev_printerr (const char *msg) 999ev_printerr (const char *msg)
526{ 1000{
527 write (STDERR_FILENO, msg, strlen (msg)); 1001 write (STDERR_FILENO, msg, strlen (msg));
528} 1002}
529#endif 1003#endif
530 1004
531static void (*syserr_cb)(const char *msg); 1005static void (*syserr_cb)(const char *msg);
532 1006
533void 1007void ecb_cold
534ev_set_syserr_cb (void (*cb)(const char *msg)) 1008ev_set_syserr_cb (void (*cb)(const char *msg))
535{ 1009{
536 syserr_cb = cb; 1010 syserr_cb = cb;
537} 1011}
538 1012
539static void noinline 1013static void noinline ecb_cold
540ev_syserr (const char *msg) 1014ev_syserr (const char *msg)
541{ 1015{
542 if (!msg) 1016 if (!msg)
543 msg = "(libev) system error"; 1017 msg = "(libev) system error";
544 1018
545 if (syserr_cb) 1019 if (syserr_cb)
546 syserr_cb (msg); 1020 syserr_cb (msg);
547 else 1021 else
548 { 1022 {
549#if EV_AVOID_STDIO 1023#if EV_AVOID_STDIO
550 const char *err = strerror (errno);
551
552 ev_printerr (msg); 1024 ev_printerr (msg);
553 ev_printerr (": "); 1025 ev_printerr (": ");
554 ev_printerr (err); 1026 ev_printerr (strerror (errno));
555 ev_printerr ("\n"); 1027 ev_printerr ("\n");
556#else 1028#else
557 perror (msg); 1029 perror (msg);
558#endif 1030#endif
559 abort (); 1031 abort ();
… …
579#endif 1051#endif
580} 1052}
581 1053
582static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1054static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
583 1055
584void 1056void ecb_cold
585ev_set_allocator (void *(*cb)(void *ptr, long size)) 1057ev_set_allocator (void *(*cb)(void *ptr, long size))
586{ 1058{
587 alloc = cb; 1059 alloc = cb;
588} 1060}
589 1061
… …
593 ptr = alloc (ptr, size); 1065 ptr = alloc (ptr, size);
594 1066
595 if (!ptr && size) 1067 if (!ptr && size)
596 { 1068 {
597#if EV_AVOID_STDIO 1069#if EV_AVOID_STDIO
598 ev_printerr ("libev: memory allocation failed, aborting.\n"); 1070 ev_printerr ("(libev) memory allocation failed, aborting.\n");
599#else 1071#else
600 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1072 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
601#endif 1073#endif
602 abort (); 1074 abort ();
603 } 1075 }
604 1076
605 return ptr; 1077 return ptr;
… …
622 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1094 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
623 unsigned char unused; 1095 unsigned char unused;
624#if EV_USE_EPOLL 1096#if EV_USE_EPOLL
625 unsigned int egen; /* generation counter to counter epoll bugs */ 1097 unsigned int egen; /* generation counter to counter epoll bugs */
626#endif 1098#endif
627#if EV_SELECT_IS_WINSOCKET 1099#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
628 SOCKET handle; 1100 SOCKET handle;
1101#endif
1102#if EV_USE_IOCP
1103 OVERLAPPED or, ow;
629#endif 1104#endif
630} ANFD; 1105} ANFD;
631 1106
632/* stores the pending event set for a given watcher */ 1107/* stores the pending event set for a given watcher */
633typedef struct 1108typedef struct
… …
698# define EV_RELEASE_CB (void)0 1173# define EV_RELEASE_CB (void)0
699# define EV_ACQUIRE_CB (void)0 1174# define EV_ACQUIRE_CB (void)0
700# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 1175# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
701#endif 1176#endif
702 1177
703#define EVUNLOOP_RECURSE 0x80 1178#define EVBREAK_RECURSE 0x80
704 1179
705/*****************************************************************************/ 1180/*****************************************************************************/
706 1181
707#ifndef EV_HAVE_EV_TIME 1182#ifndef EV_HAVE_EV_TIME
708ev_tstamp 1183ev_tstamp
… …
752 if (delay > 0.) 1227 if (delay > 0.)
753 { 1228 {
754#if EV_USE_NANOSLEEP 1229#if EV_USE_NANOSLEEP
755 struct timespec ts; 1230 struct timespec ts;
756 1231
757 ts.tv_sec = (time_t)delay; 1232 EV_TS_SET (ts, delay);
758 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
759
760 nanosleep (&ts, 0); 1233 nanosleep (&ts, 0);
761#elif defined(_WIN32) 1234#elif defined(_WIN32)
762 Sleep ((unsigned long)(delay * 1e3)); 1235 Sleep ((unsigned long)(delay * 1e3));
763#else 1236#else
764 struct timeval tv; 1237 struct timeval tv;
765 1238
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 */ 1239 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
770 /* something not guaranteed by newer posix versions, but guaranteed */ 1240 /* something not guaranteed by newer posix versions, but guaranteed */
771 /* by older ones */ 1241 /* by older ones */
1242 EV_TV_SET (tv, delay);
772 select (0, 0, 0, 0, &tv); 1243 select (0, 0, 0, 0, &tv);
773#endif 1244#endif
774 } 1245 }
775} 1246}
776 1247
777/*****************************************************************************/ 1248/*****************************************************************************/
778 1249
779#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 1250#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
780 1251
781/* find a suitable new size for the given array, */ 1252/* find a suitable new size for the given array, */
782/* hopefully by rounding to a ncie-to-malloc size */ 1253/* hopefully by rounding to a nice-to-malloc size */
783inline_size int 1254inline_size int
784array_nextsize (int elem, int cur, int cnt) 1255array_nextsize (int elem, int cur, int cnt)
785{ 1256{
786 int ncur = cur + 1; 1257 int ncur = cur + 1;
787 1258
… …
799 } 1270 }
800 1271
801 return ncur; 1272 return ncur;
802} 1273}
803 1274
804static noinline void * 1275static void * noinline ecb_cold
805array_realloc (int elem, void *base, int *cur, int cnt) 1276array_realloc (int elem, void *base, int *cur, int cnt)
806{ 1277{
807 *cur = array_nextsize (elem, *cur, cnt); 1278 *cur = array_nextsize (elem, *cur, cnt);
808 return ev_realloc (base, elem * *cur); 1279 return ev_realloc (base, elem * *cur);
809} 1280}
… …
812 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1283 memset ((void *)(base), 0, sizeof (*(base)) * (count))
813 1284
814#define array_needsize(type,base,cur,cnt,init) \ 1285#define array_needsize(type,base,cur,cnt,init) \
815 if (expect_false ((cnt) > (cur))) \ 1286 if (expect_false ((cnt) > (cur))) \
816 { \ 1287 { \
817 int ocur_ = (cur); \ 1288 int ecb_unused ocur_ = (cur); \
818 (base) = (type *)array_realloc \ 1289 (base) = (type *)array_realloc \
819 (sizeof (type), (base), &(cur), (cnt)); \ 1290 (sizeof (type), (base), &(cur), (cnt)); \
820 init ((base) + (ocur_), (cur) - ocur_); \ 1291 init ((base) + (ocur_), (cur) - ocur_); \
821 } 1292 }
822 1293
… …
922inline_size void 1393inline_size void
923fd_reify (EV_P) 1394fd_reify (EV_P)
924{ 1395{
925 int i; 1396 int i;
926 1397
1398#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1399 for (i = 0; i < fdchangecnt; ++i)
1400 {
1401 int fd = fdchanges [i];
1402 ANFD *anfd = anfds + fd;
1403
1404 if (anfd->reify & EV__IOFDSET && anfd->head)
1405 {
1406 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1407
1408 if (handle != anfd->handle)
1409 {
1410 unsigned long arg;
1411
1412 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1413
1414 /* handle changed, but fd didn't - we need to do it in two steps */
1415 backend_modify (EV_A_ fd, anfd->events, 0);
1416 anfd->events = 0;
1417 anfd->handle = handle;
1418 }
1419 }
1420 }
1421#endif
1422
927 for (i = 0; i < fdchangecnt; ++i) 1423 for (i = 0; i < fdchangecnt; ++i)
928 { 1424 {
929 int fd = fdchanges [i]; 1425 int fd = fdchanges [i];
930 ANFD *anfd = anfds + fd; 1426 ANFD *anfd = anfds + fd;
931 ev_io *w; 1427 ev_io *w;
932 1428
933 unsigned char events = 0; 1429 unsigned char o_events = anfd->events;
1430 unsigned char o_reify = anfd->reify;
934 1431
935 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1432 anfd->reify = 0;
936 events |= (unsigned char)w->events;
937 1433
938#if EV_SELECT_IS_WINSOCKET 1434 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
939 if (events)
940 { 1435 {
941 unsigned long arg; 1436 anfd->events = 0;
942 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1437
943 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1438 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
1439 anfd->events |= (unsigned char)w->events;
1440
1441 if (o_events != anfd->events)
1442 o_reify = EV__IOFDSET; /* actually |= */
944 } 1443 }
945#endif
946 1444
947 { 1445 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); 1446 backend_modify (EV_A_ fd, o_events, anfd->events);
956 }
957 } 1447 }
958 1448
959 fdchangecnt = 0; 1449 fdchangecnt = 0;
960} 1450}
961 1451
… …
973 fdchanges [fdchangecnt - 1] = fd; 1463 fdchanges [fdchangecnt - 1] = fd;
974 } 1464 }
975} 1465}
976 1466
977/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 1467/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
978inline_speed void 1468inline_speed void ecb_cold
979fd_kill (EV_P_ int fd) 1469fd_kill (EV_P_ int fd)
980{ 1470{
981 ev_io *w; 1471 ev_io *w;
982 1472
983 while ((w = (ev_io *)anfds [fd].head)) 1473 while ((w = (ev_io *)anfds [fd].head))
… …
986 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1476 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
987 } 1477 }
988} 1478}
989 1479
990/* check whether the given fd is actually valid, for error recovery */ 1480/* check whether the given fd is actually valid, for error recovery */
991inline_size int 1481inline_size int ecb_cold
992fd_valid (int fd) 1482fd_valid (int fd)
993{ 1483{
994#ifdef _WIN32 1484#ifdef _WIN32
995 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 1485 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
996#else 1486#else
997 return fcntl (fd, F_GETFD) != -1; 1487 return fcntl (fd, F_GETFD) != -1;
998#endif 1488#endif
999} 1489}
1000 1490
1001/* called on EBADF to verify fds */ 1491/* called on EBADF to verify fds */
1002static void noinline 1492static void noinline ecb_cold
1003fd_ebadf (EV_P) 1493fd_ebadf (EV_P)
1004{ 1494{
1005 int fd; 1495 int fd;
1006 1496
1007 for (fd = 0; fd < anfdmax; ++fd) 1497 for (fd = 0; fd < anfdmax; ++fd)
… …
1009 if (!fd_valid (fd) && errno == EBADF) 1499 if (!fd_valid (fd) && errno == EBADF)
1010 fd_kill (EV_A_ fd); 1500 fd_kill (EV_A_ fd);
1011} 1501}
1012 1502
1013/* called on ENOMEM in select/poll to kill some fds and retry */ 1503/* called on ENOMEM in select/poll to kill some fds and retry */
1014static void noinline 1504static void noinline ecb_cold
1015fd_enomem (EV_P) 1505fd_enomem (EV_P)
1016{ 1506{
1017 int fd; 1507 int fd;
1018 1508
1019 for (fd = anfdmax; fd--; ) 1509 for (fd = anfdmax; fd--; )
… …
1054} 1544}
1055 1545
1056/*****************************************************************************/ 1546/*****************************************************************************/
1057 1547
1058/* 1548/*
1059 * the heap functions want a real array index. array index 0 uis guaranteed to not 1549 * 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 1550 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
1061 * the branching factor of the d-tree. 1551 * the branching factor of the d-tree.
1062 */ 1552 */
1063 1553
1064/* 1554/*
… …
1214 1704
1215/*****************************************************************************/ 1705/*****************************************************************************/
1216 1706
1217#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 1707#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1218 1708
1219static void noinline 1709static void noinline ecb_cold
1220evpipe_init (EV_P) 1710evpipe_init (EV_P)
1221{ 1711{
1222 if (!ev_is_active (&pipe_w)) 1712 if (!ev_is_active (&pipe_w))
1223 { 1713 {
1224# if EV_USE_EVENTFD 1714# if EV_USE_EVENTFD
… …
1246 ev_io_start (EV_A_ &pipe_w); 1736 ev_io_start (EV_A_ &pipe_w);
1247 ev_unref (EV_A); /* watcher should not keep loop alive */ 1737 ev_unref (EV_A); /* watcher should not keep loop alive */
1248 } 1738 }
1249} 1739}
1250 1740
1251inline_size void 1741inline_speed void
1252evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1742evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1253{ 1743{
1254 if (!*flag) 1744 if (expect_true (*flag))
1745 return;
1746
1747 *flag = 1;
1748
1749 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1750
1751 pipe_write_skipped = 1;
1752
1753 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1754
1755 if (pipe_write_wanted)
1255 { 1756 {
1757 int old_errno;
1758
1759 pipe_write_skipped = 0; /* just an optimsiation, no fence needed */
1760
1256 int old_errno = errno; /* save errno because write might clobber it */ 1761 old_errno = errno; /* save errno because write will clobber it */
1257 char dummy;
1258
1259 *flag = 1;
1260 1762
1261#if EV_USE_EVENTFD 1763#if EV_USE_EVENTFD
1262 if (evfd >= 0) 1764 if (evfd >= 0)
1263 { 1765 {
1264 uint64_t counter = 1; 1766 uint64_t counter = 1;
1265 write (evfd, &counter, sizeof (uint64_t)); 1767 write (evfd, &counter, sizeof (uint64_t));
1266 } 1768 }
1267 else 1769 else
1268#endif 1770#endif
1771 {
1772 /* win32 people keep sending patches that change this write() to send() */
1773 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1774 /* so when you think this write should be a send instead, please find out */
1775 /* where your send() is from - it's definitely not the microsoft send, and */
1776 /* tell me. thank you. */
1269 write (evpipe [1], &dummy, 1); 1777 write (evpipe [1], &(evpipe [1]), 1);
1778 }
1270 1779
1271 errno = old_errno; 1780 errno = old_errno;
1272 } 1781 }
1273} 1782}
1274 1783
… …
1277static void 1786static void
1278pipecb (EV_P_ ev_io *iow, int revents) 1787pipecb (EV_P_ ev_io *iow, int revents)
1279{ 1788{
1280 int i; 1789 int i;
1281 1790
1791 if (revents & EV_READ)
1792 {
1282#if EV_USE_EVENTFD 1793#if EV_USE_EVENTFD
1283 if (evfd >= 0) 1794 if (evfd >= 0)
1284 { 1795 {
1285 uint64_t counter; 1796 uint64_t counter;
1286 read (evfd, &counter, sizeof (uint64_t)); 1797 read (evfd, &counter, sizeof (uint64_t));
1287 } 1798 }
1288 else 1799 else
1289#endif 1800#endif
1290 { 1801 {
1291 char dummy; 1802 char dummy;
1803 /* see discussion in evpipe_write when you think this read should be recv in win32 */
1292 read (evpipe [0], &dummy, 1); 1804 read (evpipe [0], &dummy, 1);
1805 }
1293 } 1806 }
1294 1807
1808 pipe_write_skipped = 0;
1809
1810#if EV_SIGNAL_ENABLE
1295 if (sig_pending) 1811 if (sig_pending)
1296 { 1812 {
1297 sig_pending = 0; 1813 sig_pending = 0;
1298 1814
1299 for (i = EV_NSIG - 1; i--; ) 1815 for (i = EV_NSIG - 1; i--; )
1300 if (expect_false (signals [i].pending)) 1816 if (expect_false (signals [i].pending))
1301 ev_feed_signal_event (EV_A_ i + 1); 1817 ev_feed_signal_event (EV_A_ i + 1);
1302 } 1818 }
1819#endif
1303 1820
1304#if EV_ASYNC_ENABLE 1821#if EV_ASYNC_ENABLE
1305 if (async_pending) 1822 if (async_pending)
1306 { 1823 {
1307 async_pending = 0; 1824 async_pending = 0;
… …
1316#endif 1833#endif
1317} 1834}
1318 1835
1319/*****************************************************************************/ 1836/*****************************************************************************/
1320 1837
1838void
1839ev_feed_signal (int signum)
1840{
1841#if EV_MULTIPLICITY
1842 EV_P = signals [signum - 1].loop;
1843
1844 if (!EV_A)
1845 return;
1846#endif
1847
1848 if (!ev_active (&pipe_w))
1849 return;
1850
1851 signals [signum - 1].pending = 1;
1852 evpipe_write (EV_A_ &sig_pending);
1853}
1854
1321static void 1855static void
1322ev_sighandler (int signum) 1856ev_sighandler (int signum)
1323{ 1857{
1324#if EV_MULTIPLICITY
1325 EV_P = signals [signum - 1].loop;
1326#endif
1327
1328#ifdef _WIN32 1858#ifdef _WIN32
1329 signal (signum, ev_sighandler); 1859 signal (signum, ev_sighandler);
1330#endif 1860#endif
1331 1861
1332 signals [signum - 1].pending = 1; 1862 ev_feed_signal (signum);
1333 evpipe_write (EV_A_ &sig_pending);
1334} 1863}
1335 1864
1336void noinline 1865void noinline
1337ev_feed_signal_event (EV_P_ int signum) 1866ev_feed_signal_event (EV_P_ int signum)
1338{ 1867{
… …
1438 1967
1439#endif 1968#endif
1440 1969
1441/*****************************************************************************/ 1970/*****************************************************************************/
1442 1971
1972#if EV_USE_IOCP
1973# include "ev_iocp.c"
1974#endif
1443#if EV_USE_PORT 1975#if EV_USE_PORT
1444# include "ev_port.c" 1976# include "ev_port.c"
1445#endif 1977#endif
1446#if EV_USE_KQUEUE 1978#if EV_USE_KQUEUE
1447# include "ev_kqueue.c" 1979# include "ev_kqueue.c"
… …
1454#endif 1986#endif
1455#if EV_USE_SELECT 1987#if EV_USE_SELECT
1456# include "ev_select.c" 1988# include "ev_select.c"
1457#endif 1989#endif
1458 1990
1459int 1991int ecb_cold
1460ev_version_major (void) 1992ev_version_major (void)
1461{ 1993{
1462 return EV_VERSION_MAJOR; 1994 return EV_VERSION_MAJOR;
1463} 1995}
1464 1996
1465int 1997int ecb_cold
1466ev_version_minor (void) 1998ev_version_minor (void)
1467{ 1999{
1468 return EV_VERSION_MINOR; 2000 return EV_VERSION_MINOR;
1469} 2001}
1470 2002
1471/* return true if we are running with elevated privileges and should ignore env variables */ 2003/* return true if we are running with elevated privileges and should ignore env variables */
1472int inline_size 2004int inline_size ecb_cold
1473enable_secure (void) 2005enable_secure (void)
1474{ 2006{
1475#ifdef _WIN32 2007#ifdef _WIN32
1476 return 0; 2008 return 0;
1477#else 2009#else
1478 return getuid () != geteuid () 2010 return getuid () != geteuid ()
1479 || getgid () != getegid (); 2011 || getgid () != getegid ();
1480#endif 2012#endif
1481} 2013}
1482 2014
1483unsigned int 2015unsigned int ecb_cold
1484ev_supported_backends (void) 2016ev_supported_backends (void)
1485{ 2017{
1486 unsigned int flags = 0; 2018 unsigned int flags = 0;
1487 2019
1488 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2020 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
… …
1492 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2024 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1493 2025
1494 return flags; 2026 return flags;
1495} 2027}
1496 2028
1497unsigned int 2029unsigned int ecb_cold
1498ev_recommended_backends (void) 2030ev_recommended_backends (void)
1499{ 2031{
1500 unsigned int flags = ev_supported_backends (); 2032 unsigned int flags = ev_supported_backends ();
1501 2033
1502#ifndef __NetBSD__ 2034#ifndef __NetBSD__
… …
1514#endif 2046#endif
1515 2047
1516 return flags; 2048 return flags;
1517} 2049}
1518 2050
1519unsigned int 2051unsigned int ecb_cold
1520ev_embeddable_backends (void) 2052ev_embeddable_backends (void)
1521{ 2053{
1522 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2054 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1523 2055
1524 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2056 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1525 /* please fix it and tell me how to detect the fix */ 2057 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1526 flags &= ~EVBACKEND_EPOLL; 2058 flags &= ~EVBACKEND_EPOLL;
1527 2059
1528 return flags; 2060 return flags;
1529} 2061}
1530 2062
1531unsigned int 2063unsigned int
… …
1569ev_userdata (EV_P) 2101ev_userdata (EV_P)
1570{ 2102{
1571 return userdata; 2103 return userdata;
1572} 2104}
1573 2105
2106void
1574void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2107ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
1575{ 2108{
1576 invoke_cb = invoke_pending_cb; 2109 invoke_cb = invoke_pending_cb;
1577} 2110}
1578 2111
2112void
1579void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2113ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
1580{ 2114{
1581 release_cb = release; 2115 release_cb = release;
1582 acquire_cb = acquire; 2116 acquire_cb = acquire;
1583} 2117}
1584#endif 2118#endif
1585 2119
1586/* initialise a loop structure, must be zero-initialised */ 2120/* initialise a loop structure, must be zero-initialised */
1587static void noinline 2121static void noinline ecb_cold
1588loop_init (EV_P_ unsigned int flags) 2122loop_init (EV_P_ unsigned int flags)
1589{ 2123{
1590 if (!backend) 2124 if (!backend)
1591 { 2125 {
2126 origflags = flags;
2127
1592#if EV_USE_REALTIME 2128#if EV_USE_REALTIME
1593 if (!have_realtime) 2129 if (!have_realtime)
1594 { 2130 {
1595 struct timespec ts; 2131 struct timespec ts;
1596 2132
… …
1618 if (!(flags & EVFLAG_NOENV) 2154 if (!(flags & EVFLAG_NOENV)
1619 && !enable_secure () 2155 && !enable_secure ()
1620 && getenv ("LIBEV_FLAGS")) 2156 && getenv ("LIBEV_FLAGS"))
1621 flags = atoi (getenv ("LIBEV_FLAGS")); 2157 flags = atoi (getenv ("LIBEV_FLAGS"));
1622 2158
1623 ev_rt_now = ev_time (); 2159 ev_rt_now = ev_time ();
1624 mn_now = get_clock (); 2160 mn_now = get_clock ();
1625 now_floor = mn_now; 2161 now_floor = mn_now;
1626 rtmn_diff = ev_rt_now - mn_now; 2162 rtmn_diff = ev_rt_now - mn_now;
1627#if EV_FEATURE_API 2163#if EV_FEATURE_API
1628 invoke_cb = ev_invoke_pending; 2164 invoke_cb = ev_invoke_pending;
1629#endif 2165#endif
1630 2166
1631 io_blocktime = 0.; 2167 io_blocktime = 0.;
1632 timeout_blocktime = 0.; 2168 timeout_blocktime = 0.;
1633 backend = 0; 2169 backend = 0;
1634 backend_fd = -1; 2170 backend_fd = -1;
1635 sig_pending = 0; 2171 sig_pending = 0;
1636#if EV_ASYNC_ENABLE 2172#if EV_ASYNC_ENABLE
1637 async_pending = 0; 2173 async_pending = 0;
1638#endif 2174#endif
2175 pipe_write_skipped = 0;
2176 pipe_write_wanted = 0;
1639#if EV_USE_INOTIFY 2177#if EV_USE_INOTIFY
1640 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 2178 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1641#endif 2179#endif
1642#if EV_USE_SIGNALFD 2180#if EV_USE_SIGNALFD
1643 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 2181 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1644#endif 2182#endif
1645 2183
1646 if (!(flags & 0x0000ffffU)) 2184 if (!(flags & EVBACKEND_MASK))
1647 flags |= ev_recommended_backends (); 2185 flags |= ev_recommended_backends ();
1648 2186
2187#if EV_USE_IOCP
2188 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2189#endif
1649#if EV_USE_PORT 2190#if EV_USE_PORT
1650 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2191 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1651#endif 2192#endif
1652#if EV_USE_KQUEUE 2193#if EV_USE_KQUEUE
1653 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2194 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1670#endif 2211#endif
1671 } 2212 }
1672} 2213}
1673 2214
1674/* free up a loop structure */ 2215/* free up a loop structure */
1675static void noinline 2216void ecb_cold
1676loop_destroy (EV_P) 2217ev_loop_destroy (EV_P)
1677{ 2218{
1678 int i; 2219 int i;
2220
2221#if EV_MULTIPLICITY
2222 /* mimic free (0) */
2223 if (!EV_A)
2224 return;
2225#endif
2226
2227#if EV_CLEANUP_ENABLE
2228 /* queue cleanup watchers (and execute them) */
2229 if (expect_false (cleanupcnt))
2230 {
2231 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2232 EV_INVOKE_PENDING;
2233 }
2234#endif
2235
2236#if EV_CHILD_ENABLE
2237 if (ev_is_active (&childev))
2238 {
2239 ev_ref (EV_A); /* child watcher */
2240 ev_signal_stop (EV_A_ &childev);
2241 }
2242#endif
1679 2243
1680 if (ev_is_active (&pipe_w)) 2244 if (ev_is_active (&pipe_w))
1681 { 2245 {
1682 /*ev_ref (EV_A);*/ 2246 /*ev_ref (EV_A);*/
1683 /*ev_io_stop (EV_A_ &pipe_w);*/ 2247 /*ev_io_stop (EV_A_ &pipe_w);*/
… …
1705#endif 2269#endif
1706 2270
1707 if (backend_fd >= 0) 2271 if (backend_fd >= 0)
1708 close (backend_fd); 2272 close (backend_fd);
1709 2273
2274#if EV_USE_IOCP
2275 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2276#endif
1710#if EV_USE_PORT 2277#if EV_USE_PORT
1711 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 2278 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1712#endif 2279#endif
1713#if EV_USE_KQUEUE 2280#if EV_USE_KQUEUE
1714 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2281 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1741 array_free (periodic, EMPTY); 2308 array_free (periodic, EMPTY);
1742#endif 2309#endif
1743#if EV_FORK_ENABLE 2310#if EV_FORK_ENABLE
1744 array_free (fork, EMPTY); 2311 array_free (fork, EMPTY);
1745#endif 2312#endif
2313#if EV_CLEANUP_ENABLE
2314 array_free (cleanup, EMPTY);
2315#endif
1746 array_free (prepare, EMPTY); 2316 array_free (prepare, EMPTY);
1747 array_free (check, EMPTY); 2317 array_free (check, EMPTY);
1748#if EV_ASYNC_ENABLE 2318#if EV_ASYNC_ENABLE
1749 array_free (async, EMPTY); 2319 array_free (async, EMPTY);
1750#endif 2320#endif
1751 2321
1752 backend = 0; 2322 backend = 0;
2323
2324#if EV_MULTIPLICITY
2325 if (ev_is_default_loop (EV_A))
2326#endif
2327 ev_default_loop_ptr = 0;
2328#if EV_MULTIPLICITY
2329 else
2330 ev_free (EV_A);
2331#endif
1753} 2332}
1754 2333
1755#if EV_USE_INOTIFY 2334#if EV_USE_INOTIFY
1756inline_size void infy_fork (EV_P); 2335inline_size void infy_fork (EV_P);
1757#endif 2336#endif
… …
1772 infy_fork (EV_A); 2351 infy_fork (EV_A);
1773#endif 2352#endif
1774 2353
1775 if (ev_is_active (&pipe_w)) 2354 if (ev_is_active (&pipe_w))
1776 { 2355 {
1777 /* this "locks" the handlers against writing to the pipe */ 2356 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1778 /* while we modify the fd vars */
1779 sig_pending = 1;
1780#if EV_ASYNC_ENABLE
1781 async_pending = 1;
1782#endif
1783 2357
1784 ev_ref (EV_A); 2358 ev_ref (EV_A);
1785 ev_io_stop (EV_A_ &pipe_w); 2359 ev_io_stop (EV_A_ &pipe_w);
1786 2360
1787#if EV_USE_EVENTFD 2361#if EV_USE_EVENTFD
… …
1805 postfork = 0; 2379 postfork = 0;
1806} 2380}
1807 2381
1808#if EV_MULTIPLICITY 2382#if EV_MULTIPLICITY
1809 2383
1810struct ev_loop * 2384struct ev_loop * ecb_cold
1811ev_loop_new (unsigned int flags) 2385ev_loop_new (unsigned int flags)
1812{ 2386{
1813 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2387 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1814 2388
1815 memset (EV_A, 0, sizeof (struct ev_loop)); 2389 memset (EV_A, 0, sizeof (struct ev_loop));
1816 loop_init (EV_A_ flags); 2390 loop_init (EV_A_ flags);
1817 2391
1818 if (ev_backend (EV_A)) 2392 if (ev_backend (EV_A))
1819 return EV_A; 2393 return EV_A;
1820 2394
2395 ev_free (EV_A);
1821 return 0; 2396 return 0;
1822} 2397}
1823 2398
1824void
1825ev_loop_destroy (EV_P)
1826{
1827 loop_destroy (EV_A);
1828 ev_free (loop);
1829}
1830
1831void
1832ev_loop_fork (EV_P)
1833{
1834 postfork = 1; /* must be in line with ev_default_fork */
1835}
1836#endif /* multiplicity */ 2399#endif /* multiplicity */
1837 2400
1838#if EV_VERIFY 2401#if EV_VERIFY
1839static void noinline 2402static void noinline ecb_cold
1840verify_watcher (EV_P_ W w) 2403verify_watcher (EV_P_ W w)
1841{ 2404{
1842 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2405 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1843 2406
1844 if (w->pending) 2407 if (w->pending)
1845 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2408 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1846} 2409}
1847 2410
1848static void noinline 2411static void noinline ecb_cold
1849verify_heap (EV_P_ ANHE *heap, int N) 2412verify_heap (EV_P_ ANHE *heap, int N)
1850{ 2413{
1851 int i; 2414 int i;
1852 2415
1853 for (i = HEAP0; i < N + HEAP0; ++i) 2416 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1858 2421
1859 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2422 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1860 } 2423 }
1861} 2424}
1862 2425
1863static void noinline 2426static void noinline ecb_cold
1864array_verify (EV_P_ W *ws, int cnt) 2427array_verify (EV_P_ W *ws, int cnt)
1865{ 2428{
1866 while (cnt--) 2429 while (cnt--)
1867 { 2430 {
1868 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2431 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
1870 } 2433 }
1871} 2434}
1872#endif 2435#endif
1873 2436
1874#if EV_FEATURE_API 2437#if EV_FEATURE_API
1875void 2438void ecb_cold
1876ev_verify (EV_P) 2439ev_verify (EV_P)
1877{ 2440{
1878#if EV_VERIFY 2441#if EV_VERIFY
1879 int i; 2442 int i;
1880 WL w; 2443 WL w;
… …
1915#if EV_FORK_ENABLE 2478#if EV_FORK_ENABLE
1916 assert (forkmax >= forkcnt); 2479 assert (forkmax >= forkcnt);
1917 array_verify (EV_A_ (W *)forks, forkcnt); 2480 array_verify (EV_A_ (W *)forks, forkcnt);
1918#endif 2481#endif
1919 2482
2483#if EV_CLEANUP_ENABLE
2484 assert (cleanupmax >= cleanupcnt);
2485 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2486#endif
2487
1920#if EV_ASYNC_ENABLE 2488#if EV_ASYNC_ENABLE
1921 assert (asyncmax >= asynccnt); 2489 assert (asyncmax >= asynccnt);
1922 array_verify (EV_A_ (W *)asyncs, asynccnt); 2490 array_verify (EV_A_ (W *)asyncs, asynccnt);
1923#endif 2491#endif
1924 2492
… …
1941#endif 2509#endif
1942} 2510}
1943#endif 2511#endif
1944 2512
1945#if EV_MULTIPLICITY 2513#if EV_MULTIPLICITY
1946struct ev_loop * 2514struct ev_loop * ecb_cold
1947ev_default_loop_init (unsigned int flags)
1948#else 2515#else
1949int 2516int
2517#endif
1950ev_default_loop (unsigned int flags) 2518ev_default_loop (unsigned int flags)
1951#endif
1952{ 2519{
1953 if (!ev_default_loop_ptr) 2520 if (!ev_default_loop_ptr)
1954 { 2521 {
1955#if EV_MULTIPLICITY 2522#if EV_MULTIPLICITY
1956 EV_P = ev_default_loop_ptr = &default_loop_struct; 2523 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
1975 2542
1976 return ev_default_loop_ptr; 2543 return ev_default_loop_ptr;
1977} 2544}
1978 2545
1979void 2546void
1980ev_default_destroy (void) 2547ev_loop_fork (EV_P)
1981{ 2548{
1982#if EV_MULTIPLICITY
1983 EV_P = ev_default_loop_ptr;
1984#endif
1985
1986 ev_default_loop_ptr = 0;
1987
1988#if EV_CHILD_ENABLE
1989 ev_ref (EV_A); /* child watcher */
1990 ev_signal_stop (EV_A_ &childev);
1991#endif
1992
1993 loop_destroy (EV_A);
1994}
1995
1996void
1997ev_default_fork (void)
1998{
1999#if EV_MULTIPLICITY
2000 EV_P = ev_default_loop_ptr;
2001#endif
2002
2003 postfork = 1; /* must be in line with ev_loop_fork */ 2549 postfork = 1; /* must be in line with ev_default_fork */
2004} 2550}
2005 2551
2006/*****************************************************************************/ 2552/*****************************************************************************/
2007 2553
2008void 2554void
… …
2030 2576
2031 for (pri = NUMPRI; pri--; ) 2577 for (pri = NUMPRI; pri--; )
2032 while (pendingcnt [pri]) 2578 while (pendingcnt [pri])
2033 { 2579 {
2034 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2580 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
2035
2036 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
2037 /* ^ this is no longer true, as pending_w could be here */
2038 2581
2039 p->w->pending = 0; 2582 p->w->pending = 0;
2040 EV_CB_INVOKE (p->w, p->events); 2583 EV_CB_INVOKE (p->w, p->events);
2041 EV_FREQUENT_CHECK; 2584 EV_FREQUENT_CHECK;
2042 } 2585 }
… …
2104 feed_reverse_done (EV_A_ EV_TIMER); 2647 feed_reverse_done (EV_A_ EV_TIMER);
2105 } 2648 }
2106} 2649}
2107 2650
2108#if EV_PERIODIC_ENABLE 2651#if EV_PERIODIC_ENABLE
2652
2653static void noinline
2654periodic_recalc (EV_P_ ev_periodic *w)
2655{
2656 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2657 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2658
2659 /* the above almost always errs on the low side */
2660 while (at <= ev_rt_now)
2661 {
2662 ev_tstamp nat = at + w->interval;
2663
2664 /* when resolution fails us, we use ev_rt_now */
2665 if (expect_false (nat == at))
2666 {
2667 at = ev_rt_now;
2668 break;
2669 }
2670
2671 at = nat;
2672 }
2673
2674 ev_at (w) = at;
2675}
2676
2109/* make periodics pending */ 2677/* make periodics pending */
2110inline_size void 2678inline_size void
2111periodics_reify (EV_P) 2679periodics_reify (EV_P)
2112{ 2680{
2113 EV_FREQUENT_CHECK; 2681 EV_FREQUENT_CHECK;
… …
2132 ANHE_at_cache (periodics [HEAP0]); 2700 ANHE_at_cache (periodics [HEAP0]);
2133 downheap (periodics, periodiccnt, HEAP0); 2701 downheap (periodics, periodiccnt, HEAP0);
2134 } 2702 }
2135 else if (w->interval) 2703 else if (w->interval)
2136 { 2704 {
2137 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2705 periodic_recalc (EV_A_ w);
2138 /* if next trigger time is not sufficiently in the future, put it there */
2139 /* this might happen because of floating point inexactness */
2140 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2141 {
2142 ev_at (w) += w->interval;
2143
2144 /* if interval is unreasonably low we might still have a time in the past */
2145 /* so correct this. this will make the periodic very inexact, but the user */
2146 /* has effectively asked to get triggered more often than possible */
2147 if (ev_at (w) < ev_rt_now)
2148 ev_at (w) = ev_rt_now;
2149 }
2150
2151 ANHE_at_cache (periodics [HEAP0]); 2706 ANHE_at_cache (periodics [HEAP0]);
2152 downheap (periodics, periodiccnt, HEAP0); 2707 downheap (periodics, periodiccnt, HEAP0);
2153 } 2708 }
2154 else 2709 else
2155 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 2710 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
2162 feed_reverse_done (EV_A_ EV_PERIODIC); 2717 feed_reverse_done (EV_A_ EV_PERIODIC);
2163 } 2718 }
2164} 2719}
2165 2720
2166/* simply recalculate all periodics */ 2721/* simply recalculate all periodics */
2167/* TODO: maybe ensure that at leats one event happens when jumping forward? */ 2722/* TODO: maybe ensure that at least one event happens when jumping forward? */
2168static void noinline 2723static void noinline ecb_cold
2169periodics_reschedule (EV_P) 2724periodics_reschedule (EV_P)
2170{ 2725{
2171 int i; 2726 int i;
2172 2727
2173 /* adjust periodics after time jump */ 2728 /* adjust periodics after time jump */
… …
2176 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 2731 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2177 2732
2178 if (w->reschedule_cb) 2733 if (w->reschedule_cb)
2179 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2734 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2180 else if (w->interval) 2735 else if (w->interval)
2181 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2736 periodic_recalc (EV_A_ w);
2182 2737
2183 ANHE_at_cache (periodics [i]); 2738 ANHE_at_cache (periodics [i]);
2184 } 2739 }
2185 2740
2186 reheap (periodics, periodiccnt); 2741 reheap (periodics, periodiccnt);
2187} 2742}
2188#endif 2743#endif
2189 2744
2190/* adjust all timers by a given offset */ 2745/* adjust all timers by a given offset */
2191static void noinline 2746static void noinline ecb_cold
2192timers_reschedule (EV_P_ ev_tstamp adjust) 2747timers_reschedule (EV_P_ ev_tstamp adjust)
2193{ 2748{
2194 int i; 2749 int i;
2195 2750
2196 for (i = 0; i < timercnt; ++i) 2751 for (i = 0; i < timercnt; ++i)
… …
2233 * doesn't hurt either as we only do this on time-jumps or 2788 * doesn't hurt either as we only do this on time-jumps or
2234 * in the unlikely event of having been preempted here. 2789 * in the unlikely event of having been preempted here.
2235 */ 2790 */
2236 for (i = 4; --i; ) 2791 for (i = 4; --i; )
2237 { 2792 {
2793 ev_tstamp diff;
2238 rtmn_diff = ev_rt_now - mn_now; 2794 rtmn_diff = ev_rt_now - mn_now;
2239 2795
2796 diff = odiff - rtmn_diff;
2797
2240 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 2798 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2241 return; /* all is well */ 2799 return; /* all is well */
2242 2800
2243 ev_rt_now = ev_time (); 2801 ev_rt_now = ev_time ();
2244 mn_now = get_clock (); 2802 mn_now = get_clock ();
2245 now_floor = mn_now; 2803 now_floor = mn_now;
… …
2268 mn_now = ev_rt_now; 2826 mn_now = ev_rt_now;
2269 } 2827 }
2270} 2828}
2271 2829
2272void 2830void
2273ev_loop (EV_P_ int flags) 2831ev_run (EV_P_ int flags)
2274{ 2832{
2275#if EV_FEATURE_API 2833#if EV_FEATURE_API
2276 ++loop_depth; 2834 ++loop_depth;
2277#endif 2835#endif
2278 2836
2279 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE)); 2837 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2280 2838
2281 loop_done = EVUNLOOP_CANCEL; 2839 loop_done = EVBREAK_CANCEL;
2282 2840
2283 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ 2841 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2284 2842
2285 do 2843 do
2286 { 2844 {
… …
2329 /* calculate blocking time */ 2887 /* calculate blocking time */
2330 { 2888 {
2331 ev_tstamp waittime = 0.; 2889 ev_tstamp waittime = 0.;
2332 ev_tstamp sleeptime = 0.; 2890 ev_tstamp sleeptime = 0.;
2333 2891
2892 /* remember old timestamp for io_blocktime calculation */
2893 ev_tstamp prev_mn_now = mn_now;
2894
2895 /* update time to cancel out callback processing overhead */
2896 time_update (EV_A_ 1e100);
2897
2898 /* from now on, we want a pipe-wake-up */
2899 pipe_write_wanted = 1;
2900
2901 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
2902
2334 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2903 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2335 { 2904 {
2336 /* remember old timestamp for io_blocktime calculation */
2337 ev_tstamp prev_mn_now = mn_now;
2338
2339 /* update time to cancel out callback processing overhead */
2340 time_update (EV_A_ 1e100);
2341
2342 waittime = MAX_BLOCKTIME; 2905 waittime = MAX_BLOCKTIME;
2343 2906
2344 if (timercnt) 2907 if (timercnt)
2345 { 2908 {
2346 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 2909 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2347 if (waittime > to) waittime = to; 2910 if (waittime > to) waittime = to;
2348 } 2911 }
2349 2912
2350#if EV_PERIODIC_ENABLE 2913#if EV_PERIODIC_ENABLE
2351 if (periodiccnt) 2914 if (periodiccnt)
2352 { 2915 {
2353 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 2916 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2354 if (waittime > to) waittime = to; 2917 if (waittime > to) waittime = to;
2355 } 2918 }
2356#endif 2919#endif
2357 2920
2358 /* don't let timeouts decrease the waittime below timeout_blocktime */ 2921 /* don't let timeouts decrease the waittime below timeout_blocktime */
2359 if (expect_false (waittime < timeout_blocktime)) 2922 if (expect_false (waittime < timeout_blocktime))
2360 waittime = timeout_blocktime; 2923 waittime = timeout_blocktime;
2924
2925 /* at this point, we NEED to wait, so we have to ensure */
2926 /* to pass a minimum nonzero value to the backend */
2927 if (expect_false (waittime < backend_mintime))
2928 waittime = backend_mintime;
2361 2929
2362 /* extra check because io_blocktime is commonly 0 */ 2930 /* extra check because io_blocktime is commonly 0 */
2363 if (expect_false (io_blocktime)) 2931 if (expect_false (io_blocktime))
2364 { 2932 {
2365 sleeptime = io_blocktime - (mn_now - prev_mn_now); 2933 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2366 2934
2367 if (sleeptime > waittime - backend_fudge) 2935 if (sleeptime > waittime - backend_mintime)
2368 sleeptime = waittime - backend_fudge; 2936 sleeptime = waittime - backend_mintime;
2369 2937
2370 if (expect_true (sleeptime > 0.)) 2938 if (expect_true (sleeptime > 0.))
2371 { 2939 {
2372 ev_sleep (sleeptime); 2940 ev_sleep (sleeptime);
2373 waittime -= sleeptime; 2941 waittime -= sleeptime;
… …
2376 } 2944 }
2377 2945
2378#if EV_FEATURE_API 2946#if EV_FEATURE_API
2379 ++loop_count; 2947 ++loop_count;
2380#endif 2948#endif
2381 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ 2949 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2382 backend_poll (EV_A_ waittime); 2950 backend_poll (EV_A_ waittime);
2383 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */ 2951 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2952
2953 pipe_write_wanted = 0; /* just an optimsiation, no fence needed */
2954
2955 if (pipe_write_skipped)
2956 {
2957 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
2958 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2959 }
2960
2384 2961
2385 /* update ev_rt_now, do magic */ 2962 /* update ev_rt_now, do magic */
2386 time_update (EV_A_ waittime + sleeptime); 2963 time_update (EV_A_ waittime + sleeptime);
2387 } 2964 }
2388 2965
… …
2406 EV_INVOKE_PENDING; 2983 EV_INVOKE_PENDING;
2407 } 2984 }
2408 while (expect_true ( 2985 while (expect_true (
2409 activecnt 2986 activecnt
2410 && !loop_done 2987 && !loop_done
2411 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 2988 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2412 )); 2989 ));
2413 2990
2414 if (loop_done == EVUNLOOP_ONE) 2991 if (loop_done == EVBREAK_ONE)
2415 loop_done = EVUNLOOP_CANCEL; 2992 loop_done = EVBREAK_CANCEL;
2416 2993
2417#if EV_FEATURE_API 2994#if EV_FEATURE_API
2418 --loop_depth; 2995 --loop_depth;
2419#endif 2996#endif
2420} 2997}
2421 2998
2422void 2999void
2423ev_unloop (EV_P_ int how) 3000ev_break (EV_P_ int how)
2424{ 3001{
2425 loop_done = how; 3002 loop_done = how;
2426} 3003}
2427 3004
2428void 3005void
… …
2576 EV_FREQUENT_CHECK; 3153 EV_FREQUENT_CHECK;
2577 3154
2578 wlist_del (&anfds[w->fd].head, (WL)w); 3155 wlist_del (&anfds[w->fd].head, (WL)w);
2579 ev_stop (EV_A_ (W)w); 3156 ev_stop (EV_A_ (W)w);
2580 3157
2581 fd_change (EV_A_ w->fd, 1); 3158 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2582 3159
2583 EV_FREQUENT_CHECK; 3160 EV_FREQUENT_CHECK;
2584} 3161}
2585 3162
2586void noinline 3163void noinline
… …
2678 if (w->reschedule_cb) 3255 if (w->reschedule_cb)
2679 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3256 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2680 else if (w->interval) 3257 else if (w->interval)
2681 { 3258 {
2682 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 3259 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2683 /* this formula differs from the one in periodic_reify because we do not always round up */ 3260 periodic_recalc (EV_A_ w);
2684 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2685 } 3261 }
2686 else 3262 else
2687 ev_at (w) = w->offset; 3263 ev_at (w) = w->offset;
2688 3264
2689 EV_FREQUENT_CHECK; 3265 EV_FREQUENT_CHECK;
… …
2810 sa.sa_handler = ev_sighandler; 3386 sa.sa_handler = ev_sighandler;
2811 sigfillset (&sa.sa_mask); 3387 sigfillset (&sa.sa_mask);
2812 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3388 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2813 sigaction (w->signum, &sa, 0); 3389 sigaction (w->signum, &sa, 0);
2814 3390
3391 if (origflags & EVFLAG_NOSIGMASK)
3392 {
2815 sigemptyset (&sa.sa_mask); 3393 sigemptyset (&sa.sa_mask);
2816 sigaddset (&sa.sa_mask, w->signum); 3394 sigaddset (&sa.sa_mask, w->signum);
2817 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); 3395 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3396 }
2818#endif 3397#endif
2819 } 3398 }
2820 3399
2821 EV_FREQUENT_CHECK; 3400 EV_FREQUENT_CHECK;
2822} 3401}
… …
2963 if (!pend || pend == path) 3542 if (!pend || pend == path)
2964 break; 3543 break;
2965 3544
2966 *pend = 0; 3545 *pend = 0;
2967 w->wd = inotify_add_watch (fs_fd, path, mask); 3546 w->wd = inotify_add_watch (fs_fd, path, mask);
2968 } 3547 }
2969 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3548 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2970 } 3549 }
2971 } 3550 }
2972 3551
2973 if (w->wd >= 0) 3552 if (w->wd >= 0)
… …
3040 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3619 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3041 ofs += sizeof (struct inotify_event) + ev->len; 3620 ofs += sizeof (struct inotify_event) + ev->len;
3042 } 3621 }
3043} 3622}
3044 3623
3045inline_size unsigned int
3046ev_linux_version (void)
3047{
3048 struct utsname buf;
3049 unsigned int v;
3050 int i;
3051 char *p = buf.release;
3052
3053 if (uname (&buf))
3054 return 0;
3055
3056 for (i = 3+1; --i; )
3057 {
3058 unsigned int c = 0;
3059
3060 for (;;)
3061 {
3062 if (*p >= '0' && *p <= '9')
3063 c = c * 10 + *p++ - '0';
3064 else
3065 {
3066 p += *p == '.';
3067 break;
3068 }
3069 }
3070
3071 v = (v << 8) | c;
3072 }
3073
3074 return v;
3075}
3076
3077inline_size void 3624inline_size void ecb_cold
3078ev_check_2625 (EV_P) 3625ev_check_2625 (EV_P)
3079{ 3626{
3080 /* kernels < 2.6.25 are borked 3627 /* kernels < 2.6.25 are borked
3081 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 3628 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3082 */ 3629 */
… …
3403 3950
3404#if EV_EMBED_ENABLE 3951#if EV_EMBED_ENABLE
3405void noinline 3952void noinline
3406ev_embed_sweep (EV_P_ ev_embed *w) 3953ev_embed_sweep (EV_P_ ev_embed *w)
3407{ 3954{
3408 ev_loop (w->other, EVLOOP_NONBLOCK); 3955 ev_run (w->other, EVRUN_NOWAIT);
3409} 3956}
3410 3957
3411static void 3958static void
3412embed_io_cb (EV_P_ ev_io *io, int revents) 3959embed_io_cb (EV_P_ ev_io *io, int revents)
3413{ 3960{
3414 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 3961 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3415 3962
3416 if (ev_cb (w)) 3963 if (ev_cb (w))
3417 ev_feed_event (EV_A_ (W)w, EV_EMBED); 3964 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3418 else 3965 else
3419 ev_loop (w->other, EVLOOP_NONBLOCK); 3966 ev_run (w->other, EVRUN_NOWAIT);
3420} 3967}
3421 3968
3422static void 3969static void
3423embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 3970embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3424{ 3971{
… …
3428 EV_P = w->other; 3975 EV_P = w->other;
3429 3976
3430 while (fdchangecnt) 3977 while (fdchangecnt)
3431 { 3978 {
3432 fd_reify (EV_A); 3979 fd_reify (EV_A);
3433 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3980 ev_run (EV_A_ EVRUN_NOWAIT);
3434 } 3981 }
3435 } 3982 }
3436} 3983}
3437 3984
3438static void 3985static void
… …
3444 3991
3445 { 3992 {
3446 EV_P = w->other; 3993 EV_P = w->other;
3447 3994
3448 ev_loop_fork (EV_A); 3995 ev_loop_fork (EV_A);
3449 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3996 ev_run (EV_A_ EVRUN_NOWAIT);
3450 } 3997 }
3451 3998
3452 ev_embed_start (EV_A_ w); 3999 ev_embed_start (EV_A_ w);
3453} 4000}
3454 4001
… …
3546 4093
3547 EV_FREQUENT_CHECK; 4094 EV_FREQUENT_CHECK;
3548} 4095}
3549#endif 4096#endif
3550 4097
4098#if EV_CLEANUP_ENABLE
4099void
4100ev_cleanup_start (EV_P_ ev_cleanup *w)
4101{
4102 if (expect_false (ev_is_active (w)))
4103 return;
4104
4105 EV_FREQUENT_CHECK;
4106
4107 ev_start (EV_A_ (W)w, ++cleanupcnt);
4108 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
4109 cleanups [cleanupcnt - 1] = w;
4110
4111 /* cleanup watchers should never keep a refcount on the loop */
4112 ev_unref (EV_A);
4113 EV_FREQUENT_CHECK;
4114}
4115
4116void
4117ev_cleanup_stop (EV_P_ ev_cleanup *w)
4118{
4119 clear_pending (EV_A_ (W)w);
4120 if (expect_false (!ev_is_active (w)))
4121 return;
4122
4123 EV_FREQUENT_CHECK;
4124 ev_ref (EV_A);
4125
4126 {
4127 int active = ev_active (w);
4128
4129 cleanups [active - 1] = cleanups [--cleanupcnt];
4130 ev_active (cleanups [active - 1]) = active;
4131 }
4132
4133 ev_stop (EV_A_ (W)w);
4134
4135 EV_FREQUENT_CHECK;
4136}
4137#endif
4138
3551#if EV_ASYNC_ENABLE 4139#if EV_ASYNC_ENABLE
3552void 4140void
3553ev_async_start (EV_P_ ev_async *w) 4141ev_async_start (EV_P_ ev_async *w)
3554{ 4142{
3555 if (expect_false (ev_is_active (w))) 4143 if (expect_false (ev_is_active (w)))
3556 return; 4144 return;
4145
4146 w->sent = 0;
3557 4147
3558 evpipe_init (EV_A); 4148 evpipe_init (EV_A);
3559 4149
3560 EV_FREQUENT_CHECK; 4150 EV_FREQUENT_CHECK;
3561 4151
… …
3664} 4254}
3665 4255
3666/*****************************************************************************/ 4256/*****************************************************************************/
3667 4257
3668#if EV_WALK_ENABLE 4258#if EV_WALK_ENABLE
3669void 4259void ecb_cold
3670ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 4260ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3671{ 4261{
3672 int i, j; 4262 int i, j;
3673 ev_watcher_list *wl, *wn; 4263 ev_watcher_list *wl, *wn;
3674 4264
… …
3718 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 4308 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3719#endif 4309#endif
3720 4310
3721#if EV_IDLE_ENABLE 4311#if EV_IDLE_ENABLE
3722 if (types & EV_IDLE) 4312 if (types & EV_IDLE)
3723 for (j = NUMPRI; i--; ) 4313 for (j = NUMPRI; j--; )
3724 for (i = idlecnt [j]; i--; ) 4314 for (i = idlecnt [j]; i--; )
3725 cb (EV_A_ EV_IDLE, idles [j][i]); 4315 cb (EV_A_ EV_IDLE, idles [j][i]);
3726#endif 4316#endif
3727 4317
3728#if EV_FORK_ENABLE 4318#if EV_FORK_ENABLE
… …
3781 4371
3782#if EV_MULTIPLICITY 4372#if EV_MULTIPLICITY
3783 #include "ev_wrap.h" 4373 #include "ev_wrap.h"
3784#endif 4374#endif
3785 4375
3786#ifdef __cplusplus 4376EV_CPP(})
3787}
3788#endif
3789 4377

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