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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 1.399 by root, Mon Sep 26 12:32:21 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
… …
186# ifndef EV_SELECT_IS_WINSOCKET 196# ifndef EV_SELECT_IS_WINSOCKET
187# define EV_SELECT_IS_WINSOCKET 1 197# define EV_SELECT_IS_WINSOCKET 1
188# endif 198# endif
189# undef EV_AVOID_STDIO 199# undef EV_AVOID_STDIO
190#endif 200#endif
201
202/* OS X, in its infinite idiocy, actually HARDCODES
203 * a limit of 1024 into their select. Where people have brains,
204 * OS X engineers apparently have a vacuum. Or maybe they were
205 * ordered to have a vacuum, or they do anything for money.
206 * This might help. Or not.
207 */
208#define _DARWIN_UNLIMITED_SELECT 1
191 209
192/* this block tries to deduce configuration from header-defined symbols and defaults */ 210/* this block tries to deduce configuration from header-defined symbols and defaults */
193 211
194/* try to deduce the maximum number of signals on this platform */ 212/* try to deduce the maximum number of signals on this platform */
195#if defined (EV_NSIG) 213#if defined (EV_NSIG)
… …
217/* to make it compile regardless, just remove the above line, */ 235/* to make it compile regardless, just remove the above line, */
218/* but consider reporting it, too! :) */ 236/* but consider reporting it, too! :) */
219# define EV_NSIG 65 237# define EV_NSIG 65
220#endif 238#endif
221 239
240#ifndef EV_USE_FLOOR
241# define EV_USE_FLOOR 0
242#endif
243
222#ifndef EV_USE_CLOCK_SYSCALL 244#ifndef EV_USE_CLOCK_SYSCALL
223# if __linux && __GLIBC__ >= 2 245# if __linux && __GLIBC__ >= 2
224# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS 246# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
225# else 247# else
226# define EV_USE_CLOCK_SYSCALL 0 248# define EV_USE_CLOCK_SYSCALL 0
… …
361# undef EV_USE_INOTIFY 383# undef EV_USE_INOTIFY
362# define EV_USE_INOTIFY 0 384# define EV_USE_INOTIFY 0
363#endif 385#endif
364 386
365#if !EV_USE_NANOSLEEP 387#if !EV_USE_NANOSLEEP
366# ifndef _WIN32 388/* hp-ux has it in sys/time.h, which we unconditionally include above */
389# if !defined(_WIN32) && !defined(__hpux)
367# include <sys/select.h> 390# include <sys/select.h>
368# endif 391# endif
369#endif 392#endif
370 393
371#if EV_USE_INOTIFY 394#if EV_USE_INOTIFY
372# include <sys/utsname.h>
373# include <sys/statfs.h> 395# include <sys/statfs.h>
374# include <sys/inotify.h> 396# include <sys/inotify.h>
375/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 397/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
376# ifndef IN_DONT_FOLLOW 398# ifndef IN_DONT_FOLLOW
377# undef EV_USE_INOTIFY 399# undef EV_USE_INOTIFY
… …
394# define EFD_CLOEXEC O_CLOEXEC 416# define EFD_CLOEXEC O_CLOEXEC
395# else 417# else
396# define EFD_CLOEXEC 02000000 418# define EFD_CLOEXEC 02000000
397# endif 419# endif
398# endif 420# endif
399# ifdef __cplusplus
400extern "C" {
401# endif
402int (eventfd) (unsigned int initval, int flags); 421EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
403# ifdef __cplusplus
404}
405# endif
406#endif 422#endif
407 423
408#if EV_USE_SIGNALFD 424#if EV_USE_SIGNALFD
409/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 425/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
410# include <stdint.h> 426# include <stdint.h>
… …
416# define SFD_CLOEXEC O_CLOEXEC 432# define SFD_CLOEXEC O_CLOEXEC
417# else 433# else
418# define SFD_CLOEXEC 02000000 434# define SFD_CLOEXEC 02000000
419# endif 435# endif
420# endif 436# endif
421# ifdef __cplusplus
422extern "C" {
423# endif
424int signalfd (int fd, const sigset_t *mask, int flags); 437EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
425 438
426struct signalfd_siginfo 439struct signalfd_siginfo
427{ 440{
428 uint32_t ssi_signo; 441 uint32_t ssi_signo;
429 char pad[128 - sizeof (uint32_t)]; 442 char pad[128 - sizeof (uint32_t)];
430}; 443};
431# ifdef __cplusplus
432}
433# endif 444#endif
434#endif
435
436 445
437/**/ 446/**/
438 447
439#if EV_VERIFY >= 3 448#if EV_VERIFY >= 3
440# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 449# define EV_FREQUENT_CHECK ev_verify (EV_A)
441#else 450#else
442# define EV_FREQUENT_CHECK do { } while (0) 451# define EV_FREQUENT_CHECK do { } while (0)
443#endif 452#endif
444 453
445/* 454/*
446 * This is used to avoid floating point rounding problems. 455 * 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. 456 * This value is good at least till the year 4000.
451 * Better solutions welcome.
452 */ 457 */
453#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 458#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
459/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
454 460
455#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 461#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) */ 462#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
457 463
464#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
465#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
466
467/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
468/* ECB.H BEGIN */
469/*
470 * libecb - http://software.schmorp.de/pkg/libecb
471 *
472 * Copyright (©) 2009-2011 Marc Alexander Lehmann <libecb@schmorp.de>
473 * Copyright (©) 2011 Emanuele Giaquinta
474 * All rights reserved.
475 *
476 * Redistribution and use in source and binary forms, with or without modifica-
477 * tion, are permitted provided that the following conditions are met:
478 *
479 * 1. Redistributions of source code must retain the above copyright notice,
480 * this list of conditions and the following disclaimer.
481 *
482 * 2. Redistributions in binary form must reproduce the above copyright
483 * notice, this list of conditions and the following disclaimer in the
484 * documentation and/or other materials provided with the distribution.
485 *
486 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
487 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
488 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
489 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
490 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
491 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
492 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
493 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
494 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
495 * OF THE POSSIBILITY OF SUCH DAMAGE.
496 */
497
498#ifndef ECB_H
499#define ECB_H
500
501#ifdef _WIN32
502 typedef signed char int8_t;
503 typedef unsigned char uint8_t;
504 typedef signed short int16_t;
505 typedef unsigned short uint16_t;
506 typedef signed int int32_t;
507 typedef unsigned int uint32_t;
458#if __GNUC__ >= 4 508 #if __GNUC__
459# define expect(expr,value) __builtin_expect ((expr),(value)) 509 typedef signed long long int64_t;
460# define noinline __attribute__ ((noinline)) 510 typedef unsigned long long uint64_t;
511 #else /* _MSC_VER || __BORLANDC__ */
512 typedef signed __int64 int64_t;
513 typedef unsigned __int64 uint64_t;
514 #endif
461#else 515#else
462# define expect(expr,value) (expr) 516 #include <inttypes.h>
463# define noinline
464# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
465# define inline
466# endif 517#endif
518
519/* many compilers define _GNUC_ to some versions but then only implement
520 * what their idiot authors think are the "more important" extensions,
521 * causing enormous grief in return for some better fake benchmark numbers.
522 * or so.
523 * we try to detect these and simply assume they are not gcc - if they have
524 * an issue with that they should have done it right in the first place.
525 */
526#ifndef ECB_GCC_VERSION
527 #if !defined(__GNUC_MINOR__) || defined(__INTEL_COMPILER) || defined(__SUNPRO_C) || defined(__SUNPRO_CC) || defined(__llvm__) || defined(__clang__)
528 #define ECB_GCC_VERSION(major,minor) 0
529 #else
530 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
467#endif 531 #endif
532#endif
468 533
534/*****************************************************************************/
535
536/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
537/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
538
539#if ECB_NO_THREADS || ECB_NO_SMP
540 #define ECB_MEMORY_FENCE do { } while (0)
541#endif
542
543#ifndef ECB_MEMORY_FENCE
544 #if ECB_GCC_VERSION(2,5) || defined(__INTEL_COMPILER) || defined(__clang__)
545 #if __i386__
546 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
547 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE /* non-lock xchg might be enough */
548 #define ECB_MEMORY_FENCE_RELEASE do { } while (0) /* unlikely to change in future cpus */
549 #elif __amd64
550 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
551 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("lfence" : : : "memory")
552 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("sfence") /* play safe - not needed in any current cpu */
553 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
554 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
555 #elif defined(__ARM_ARCH_6__ ) || defined(__ARM_ARCH_6J__ ) \
556 || defined(__ARM_ARCH_6K__) || defined(__ARM_ARCH_6ZK__)
557 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
558 #elif defined(__ARM_ARCH_7__ ) || defined(__ARM_ARCH_7A__ ) \
559 || defined(__ARM_ARCH_7M__) || defined(__ARM_ARCH_7R__ )
560 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
561 #endif
562 #endif
563#endif
564
565#ifndef ECB_MEMORY_FENCE
566 #if ECB_GCC_VERSION(4,4) || defined(__INTEL_COMPILER) || defined(__clang__)
567 #define ECB_MEMORY_FENCE __sync_synchronize ()
568 /*#define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); }) */
569 /*#define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); }) */
570 #elif _MSC_VER >= 1400 /* VC++ 2005 */
571 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
572 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
573 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
574 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
575 #elif defined(_WIN32)
576 #include <WinNT.h>
577 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
578 #endif
579#endif
580
581#ifndef ECB_MEMORY_FENCE
582 #if !ECB_AVOID_PTHREADS
583 /*
584 * if you get undefined symbol references to pthread_mutex_lock,
585 * or failure to find pthread.h, then you should implement
586 * the ECB_MEMORY_FENCE operations for your cpu/compiler
587 * OR provide pthread.h and link against the posix thread library
588 * of your system.
589 */
590 #include <pthread.h>
591 #define ECB_NEEDS_PTHREADS 1
592 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
593
594 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
595 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
596 #endif
597#endif
598
599#if !defined(ECB_MEMORY_FENCE_ACQUIRE) && defined(ECB_MEMORY_FENCE)
600 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
601#endif
602
603#if !defined(ECB_MEMORY_FENCE_RELEASE) && defined(ECB_MEMORY_FENCE)
604 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
605#endif
606
607/*****************************************************************************/
608
609#define ECB_C99 (__STDC_VERSION__ >= 199901L)
610
611#if __cplusplus
612 #define ecb_inline static inline
613#elif ECB_GCC_VERSION(2,5)
614 #define ecb_inline static __inline__
615#elif ECB_C99
616 #define ecb_inline static inline
617#else
618 #define ecb_inline static
619#endif
620
621#if ECB_GCC_VERSION(3,3)
622 #define ecb_restrict __restrict__
623#elif ECB_C99
624 #define ecb_restrict restrict
625#else
626 #define ecb_restrict
627#endif
628
629typedef int ecb_bool;
630
631#define ECB_CONCAT_(a, b) a ## b
632#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
633#define ECB_STRINGIFY_(a) # a
634#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
635
636#define ecb_function_ ecb_inline
637
638#if ECB_GCC_VERSION(3,1)
639 #define ecb_attribute(attrlist) __attribute__(attrlist)
640 #define ecb_is_constant(expr) __builtin_constant_p (expr)
641 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
642 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
643#else
644 #define ecb_attribute(attrlist)
645 #define ecb_is_constant(expr) 0
646 #define ecb_expect(expr,value) (expr)
647 #define ecb_prefetch(addr,rw,locality)
648#endif
649
650/* no emulation for ecb_decltype */
651#if ECB_GCC_VERSION(4,5)
652 #define ecb_decltype(x) __decltype(x)
653#elif ECB_GCC_VERSION(3,0)
654 #define ecb_decltype(x) __typeof(x)
655#endif
656
657#define ecb_noinline ecb_attribute ((__noinline__))
658#define ecb_noreturn ecb_attribute ((__noreturn__))
659#define ecb_unused ecb_attribute ((__unused__))
660#define ecb_const ecb_attribute ((__const__))
661#define ecb_pure ecb_attribute ((__pure__))
662
663#if ECB_GCC_VERSION(4,3)
664 #define ecb_artificial ecb_attribute ((__artificial__))
665 #define ecb_hot ecb_attribute ((__hot__))
666 #define ecb_cold ecb_attribute ((__cold__))
667#else
668 #define ecb_artificial
669 #define ecb_hot
670 #define ecb_cold
671#endif
672
673/* put around conditional expressions if you are very sure that the */
674/* expression is mostly true or mostly false. note that these return */
675/* booleans, not the expression. */
469#define expect_false(expr) expect ((expr) != 0, 0) 676#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
470#define expect_true(expr) expect ((expr) != 0, 1) 677#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
678/* for compatibility to the rest of the world */
679#define ecb_likely(expr) ecb_expect_true (expr)
680#define ecb_unlikely(expr) ecb_expect_false (expr)
681
682/* count trailing zero bits and count # of one bits */
683#if ECB_GCC_VERSION(3,4)
684 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
685 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
686 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
687 #define ecb_ctz32(x) __builtin_ctz (x)
688 #define ecb_ctz64(x) __builtin_ctzll (x)
689 #define ecb_popcount32(x) __builtin_popcount (x)
690 /* no popcountll */
691#else
692 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const;
693 ecb_function_ int
694 ecb_ctz32 (uint32_t x)
695 {
696 int r = 0;
697
698 x &= ~x + 1; /* this isolates the lowest bit */
699
700#if ECB_branchless_on_i386
701 r += !!(x & 0xaaaaaaaa) << 0;
702 r += !!(x & 0xcccccccc) << 1;
703 r += !!(x & 0xf0f0f0f0) << 2;
704 r += !!(x & 0xff00ff00) << 3;
705 r += !!(x & 0xffff0000) << 4;
706#else
707 if (x & 0xaaaaaaaa) r += 1;
708 if (x & 0xcccccccc) r += 2;
709 if (x & 0xf0f0f0f0) r += 4;
710 if (x & 0xff00ff00) r += 8;
711 if (x & 0xffff0000) r += 16;
712#endif
713
714 return r;
715 }
716
717 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const;
718 ecb_function_ int
719 ecb_ctz64 (uint64_t x)
720 {
721 int shift = x & 0xffffffffU ? 0 : 32;
722 return ecb_ctz32 (x >> shift) + shift;
723 }
724
725 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const;
726 ecb_function_ int
727 ecb_popcount32 (uint32_t x)
728 {
729 x -= (x >> 1) & 0x55555555;
730 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
731 x = ((x >> 4) + x) & 0x0f0f0f0f;
732 x *= 0x01010101;
733
734 return x >> 24;
735 }
736
737 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const;
738 ecb_function_ int ecb_ld32 (uint32_t x)
739 {
740 int r = 0;
741
742 if (x >> 16) { x >>= 16; r += 16; }
743 if (x >> 8) { x >>= 8; r += 8; }
744 if (x >> 4) { x >>= 4; r += 4; }
745 if (x >> 2) { x >>= 2; r += 2; }
746 if (x >> 1) { r += 1; }
747
748 return r;
749 }
750
751 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const;
752 ecb_function_ int ecb_ld64 (uint64_t x)
753 {
754 int r = 0;
755
756 if (x >> 32) { x >>= 32; r += 32; }
757
758 return r + ecb_ld32 (x);
759 }
760#endif
761
762/* popcount64 is only available on 64 bit cpus as gcc builtin */
763/* so for this version we are lazy */
764ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const;
765ecb_function_ int
766ecb_popcount64 (uint64_t x)
767{
768 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
769}
770
771ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const;
772ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const;
773ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const;
774ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const;
775ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const;
776ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const;
777ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const;
778ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const;
779
780ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
781ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
782ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
783ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
784ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
785ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
786ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
787ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
788
789#if ECB_GCC_VERSION(4,3)
790 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
791 #define ecb_bswap32(x) __builtin_bswap32 (x)
792 #define ecb_bswap64(x) __builtin_bswap64 (x)
793#else
794 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const;
795 ecb_function_ uint16_t
796 ecb_bswap16 (uint16_t x)
797 {
798 return ecb_rotl16 (x, 8);
799 }
800
801 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const;
802 ecb_function_ uint32_t
803 ecb_bswap32 (uint32_t x)
804 {
805 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
806 }
807
808 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const;
809 ecb_function_ uint64_t
810 ecb_bswap64 (uint64_t x)
811 {
812 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
813 }
814#endif
815
816#if ECB_GCC_VERSION(4,5)
817 #define ecb_unreachable() __builtin_unreachable ()
818#else
819 /* this seems to work fine, but gcc always emits a warning for it :/ */
820 ecb_function_ void ecb_unreachable (void) ecb_noreturn;
821 ecb_function_ void ecb_unreachable (void) { }
822#endif
823
824/* try to tell the compiler that some condition is definitely true */
825#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0)
826
827ecb_function_ unsigned char ecb_byteorder_helper (void) ecb_const;
828ecb_function_ unsigned char
829ecb_byteorder_helper (void)
830{
831 const uint32_t u = 0x11223344;
832 return *(unsigned char *)&u;
833}
834
835ecb_function_ ecb_bool ecb_big_endian (void) ecb_const;
836ecb_function_ ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
837ecb_function_ ecb_bool ecb_little_endian (void) ecb_const;
838ecb_function_ ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }
839
840#if ECB_GCC_VERSION(3,0) || ECB_C99
841 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
842#else
843 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
844#endif
845
846#if __cplusplus
847 template<typename T>
848 static inline T ecb_div_rd (T val, T div)
849 {
850 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
851 }
852 template<typename T>
853 static inline T ecb_div_ru (T val, T div)
854 {
855 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
856 }
857#else
858 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
859 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
860#endif
861
862#if ecb_cplusplus_does_not_suck
863 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
864 template<typename T, int N>
865 static inline int ecb_array_length (const T (&arr)[N])
866 {
867 return N;
868 }
869#else
870 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
871#endif
872
873#endif
874
875/* ECB.H END */
876
877#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
878/* if your architecture doesn't need memory fences, e.g. because it is
879 * single-cpu/core, or if you use libev in a project that doesn't use libev
880 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
881 * libev, in which casess the memory fences become nops.
882 * alternatively, you can remove this #error and link against libpthread,
883 * which will then provide the memory fences.
884 */
885# error "memory fences not defined for your architecture, please report"
886#endif
887
888#ifndef ECB_MEMORY_FENCE
889# define ECB_MEMORY_FENCE do { } while (0)
890# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
891# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
892#endif
893
894#define expect_false(cond) ecb_expect_false (cond)
895#define expect_true(cond) ecb_expect_true (cond)
896#define noinline ecb_noinline
897
471#define inline_size static inline 898#define inline_size ecb_inline
472 899
473#if EV_FEATURE_CODE 900#if EV_FEATURE_CODE
474# define inline_speed static inline 901# define inline_speed ecb_inline
475#else 902#else
476# define inline_speed static noinline 903# define inline_speed static noinline
477#endif 904#endif
478 905
479#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 906#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
… …
494#define ev_active(w) ((W)(w))->active 921#define ev_active(w) ((W)(w))->active
495#define ev_at(w) ((WT)(w))->at 922#define ev_at(w) ((WT)(w))->at
496 923
497#if EV_USE_REALTIME 924#if EV_USE_REALTIME
498/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 925/* 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 */ 926/* giving it a reasonably high chance of working on typical architectures */
500static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 927static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
501#endif 928#endif
502 929
503#if EV_USE_MONOTONIC 930#if EV_USE_MONOTONIC
504static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 931static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
… …
518# include "ev_win32.c" 945# include "ev_win32.c"
519#endif 946#endif
520 947
521/*****************************************************************************/ 948/*****************************************************************************/
522 949
950/* define a suitable floor function (only used by periodics atm) */
951
952#if EV_USE_FLOOR
953# include <math.h>
954# define ev_floor(v) floor (v)
955#else
956
957#include <float.h>
958
959/* a floor() replacement function, should be independent of ev_tstamp type */
960static ev_tstamp noinline
961ev_floor (ev_tstamp v)
962{
963 /* the choice of shift factor is not terribly important */
964#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
965 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
966#else
967 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
968#endif
969
970 /* argument too large for an unsigned long? */
971 if (expect_false (v >= shift))
972 {
973 ev_tstamp f;
974
975 if (v == v - 1.)
976 return v; /* very large number */
977
978 f = shift * ev_floor (v * (1. / shift));
979 return f + ev_floor (v - f);
980 }
981
982 /* special treatment for negative args? */
983 if (expect_false (v < 0.))
984 {
985 ev_tstamp f = -ev_floor (-v);
986
987 return f - (f == v ? 0 : 1);
988 }
989
990 /* fits into an unsigned long */
991 return (unsigned long)v;
992}
993
994#endif
995
996/*****************************************************************************/
997
998#ifdef __linux
999# include <sys/utsname.h>
1000#endif
1001
1002static unsigned int noinline ecb_cold
1003ev_linux_version (void)
1004{
1005#ifdef __linux
1006 unsigned int v = 0;
1007 struct utsname buf;
1008 int i;
1009 char *p = buf.release;
1010
1011 if (uname (&buf))
1012 return 0;
1013
1014 for (i = 3+1; --i; )
1015 {
1016 unsigned int c = 0;
1017
1018 for (;;)
1019 {
1020 if (*p >= '0' && *p <= '9')
1021 c = c * 10 + *p++ - '0';
1022 else
1023 {
1024 p += *p == '.';
1025 break;
1026 }
1027 }
1028
1029 v = (v << 8) | c;
1030 }
1031
1032 return v;
1033#else
1034 return 0;
1035#endif
1036}
1037
1038/*****************************************************************************/
1039
523#if EV_AVOID_STDIO 1040#if EV_AVOID_STDIO
524static void noinline 1041static void noinline ecb_cold
525ev_printerr (const char *msg) 1042ev_printerr (const char *msg)
526{ 1043{
527 write (STDERR_FILENO, msg, strlen (msg)); 1044 write (STDERR_FILENO, msg, strlen (msg));
528} 1045}
529#endif 1046#endif
530 1047
531static void (*syserr_cb)(const char *msg); 1048static void (*syserr_cb)(const char *msg);
532 1049
533void 1050void ecb_cold
534ev_set_syserr_cb (void (*cb)(const char *msg)) 1051ev_set_syserr_cb (void (*cb)(const char *msg))
535{ 1052{
536 syserr_cb = cb; 1053 syserr_cb = cb;
537} 1054}
538 1055
539static void noinline 1056static void noinline ecb_cold
540ev_syserr (const char *msg) 1057ev_syserr (const char *msg)
541{ 1058{
542 if (!msg) 1059 if (!msg)
543 msg = "(libev) system error"; 1060 msg = "(libev) system error";
544 1061
545 if (syserr_cb) 1062 if (syserr_cb)
546 syserr_cb (msg); 1063 syserr_cb (msg);
547 else 1064 else
548 { 1065 {
549#if EV_AVOID_STDIO 1066#if EV_AVOID_STDIO
550 const char *err = strerror (errno);
551
552 ev_printerr (msg); 1067 ev_printerr (msg);
553 ev_printerr (": "); 1068 ev_printerr (": ");
554 ev_printerr (err); 1069 ev_printerr (strerror (errno));
555 ev_printerr ("\n"); 1070 ev_printerr ("\n");
556#else 1071#else
557 perror (msg); 1072 perror (msg);
558#endif 1073#endif
559 abort (); 1074 abort ();
… …
579#endif 1094#endif
580} 1095}
581 1096
582static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1097static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
583 1098
584void 1099void ecb_cold
585ev_set_allocator (void *(*cb)(void *ptr, long size)) 1100ev_set_allocator (void *(*cb)(void *ptr, long size))
586{ 1101{
587 alloc = cb; 1102 alloc = cb;
588} 1103}
589 1104
… …
593 ptr = alloc (ptr, size); 1108 ptr = alloc (ptr, size);
594 1109
595 if (!ptr && size) 1110 if (!ptr && size)
596 { 1111 {
597#if EV_AVOID_STDIO 1112#if EV_AVOID_STDIO
598 ev_printerr ("libev: memory allocation failed, aborting.\n"); 1113 ev_printerr ("(libev) memory allocation failed, aborting.\n");
599#else 1114#else
600 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1115 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
601#endif 1116#endif
602 abort (); 1117 abort ();
603 } 1118 }
604 1119
605 return ptr; 1120 return ptr;
… …
622 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1137 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
623 unsigned char unused; 1138 unsigned char unused;
624#if EV_USE_EPOLL 1139#if EV_USE_EPOLL
625 unsigned int egen; /* generation counter to counter epoll bugs */ 1140 unsigned int egen; /* generation counter to counter epoll bugs */
626#endif 1141#endif
627#if EV_SELECT_IS_WINSOCKET 1142#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
628 SOCKET handle; 1143 SOCKET handle;
1144#endif
1145#if EV_USE_IOCP
1146 OVERLAPPED or, ow;
629#endif 1147#endif
630} ANFD; 1148} ANFD;
631 1149
632/* stores the pending event set for a given watcher */ 1150/* stores the pending event set for a given watcher */
633typedef struct 1151typedef struct
… …
698# define EV_RELEASE_CB (void)0 1216# define EV_RELEASE_CB (void)0
699# define EV_ACQUIRE_CB (void)0 1217# define EV_ACQUIRE_CB (void)0
700# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 1218# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
701#endif 1219#endif
702 1220
703#define EVUNLOOP_RECURSE 0x80 1221#define EVBREAK_RECURSE 0x80
704 1222
705/*****************************************************************************/ 1223/*****************************************************************************/
706 1224
707#ifndef EV_HAVE_EV_TIME 1225#ifndef EV_HAVE_EV_TIME
708ev_tstamp 1226ev_tstamp
… …
752 if (delay > 0.) 1270 if (delay > 0.)
753 { 1271 {
754#if EV_USE_NANOSLEEP 1272#if EV_USE_NANOSLEEP
755 struct timespec ts; 1273 struct timespec ts;
756 1274
757 ts.tv_sec = (time_t)delay; 1275 EV_TS_SET (ts, delay);
758 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
759
760 nanosleep (&ts, 0); 1276 nanosleep (&ts, 0);
761#elif defined(_WIN32) 1277#elif defined(_WIN32)
762 Sleep ((unsigned long)(delay * 1e3)); 1278 Sleep ((unsigned long)(delay * 1e3));
763#else 1279#else
764 struct timeval tv; 1280 struct timeval tv;
765 1281
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 */ 1282 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
770 /* something not guaranteed by newer posix versions, but guaranteed */ 1283 /* something not guaranteed by newer posix versions, but guaranteed */
771 /* by older ones */ 1284 /* by older ones */
1285 EV_TV_SET (tv, delay);
772 select (0, 0, 0, 0, &tv); 1286 select (0, 0, 0, 0, &tv);
773#endif 1287#endif
774 } 1288 }
775} 1289}
776 1290
777/*****************************************************************************/ 1291/*****************************************************************************/
778 1292
779#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 1293#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
780 1294
781/* find a suitable new size for the given array, */ 1295/* find a suitable new size for the given array, */
782/* hopefully by rounding to a ncie-to-malloc size */ 1296/* hopefully by rounding to a nice-to-malloc size */
783inline_size int 1297inline_size int
784array_nextsize (int elem, int cur, int cnt) 1298array_nextsize (int elem, int cur, int cnt)
785{ 1299{
786 int ncur = cur + 1; 1300 int ncur = cur + 1;
787 1301
… …
799 } 1313 }
800 1314
801 return ncur; 1315 return ncur;
802} 1316}
803 1317
804static noinline void * 1318static void * noinline ecb_cold
805array_realloc (int elem, void *base, int *cur, int cnt) 1319array_realloc (int elem, void *base, int *cur, int cnt)
806{ 1320{
807 *cur = array_nextsize (elem, *cur, cnt); 1321 *cur = array_nextsize (elem, *cur, cnt);
808 return ev_realloc (base, elem * *cur); 1322 return ev_realloc (base, elem * *cur);
809} 1323}
… …
812 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1326 memset ((void *)(base), 0, sizeof (*(base)) * (count))
813 1327
814#define array_needsize(type,base,cur,cnt,init) \ 1328#define array_needsize(type,base,cur,cnt,init) \
815 if (expect_false ((cnt) > (cur))) \ 1329 if (expect_false ((cnt) > (cur))) \
816 { \ 1330 { \
817 int ocur_ = (cur); \ 1331 int ecb_unused ocur_ = (cur); \
818 (base) = (type *)array_realloc \ 1332 (base) = (type *)array_realloc \
819 (sizeof (type), (base), &(cur), (cnt)); \ 1333 (sizeof (type), (base), &(cur), (cnt)); \
820 init ((base) + (ocur_), (cur) - ocur_); \ 1334 init ((base) + (ocur_), (cur) - ocur_); \
821 } 1335 }
822 1336
… …
922inline_size void 1436inline_size void
923fd_reify (EV_P) 1437fd_reify (EV_P)
924{ 1438{
925 int i; 1439 int i;
926 1440
1441#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1442 for (i = 0; i < fdchangecnt; ++i)
1443 {
1444 int fd = fdchanges [i];
1445 ANFD *anfd = anfds + fd;
1446
1447 if (anfd->reify & EV__IOFDSET && anfd->head)
1448 {
1449 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1450
1451 if (handle != anfd->handle)
1452 {
1453 unsigned long arg;
1454
1455 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1456
1457 /* handle changed, but fd didn't - we need to do it in two steps */
1458 backend_modify (EV_A_ fd, anfd->events, 0);
1459 anfd->events = 0;
1460 anfd->handle = handle;
1461 }
1462 }
1463 }
1464#endif
1465
927 for (i = 0; i < fdchangecnt; ++i) 1466 for (i = 0; i < fdchangecnt; ++i)
928 { 1467 {
929 int fd = fdchanges [i]; 1468 int fd = fdchanges [i];
930 ANFD *anfd = anfds + fd; 1469 ANFD *anfd = anfds + fd;
931 ev_io *w; 1470 ev_io *w;
932 1471
933 unsigned char events = 0; 1472 unsigned char o_events = anfd->events;
1473 unsigned char o_reify = anfd->reify;
934 1474
935 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1475 anfd->reify = 0;
936 events |= (unsigned char)w->events;
937 1476
938#if EV_SELECT_IS_WINSOCKET 1477 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
939 if (events)
940 { 1478 {
941 unsigned long arg; 1479 anfd->events = 0;
942 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1480
943 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1481 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
1482 anfd->events |= (unsigned char)w->events;
1483
1484 if (o_events != anfd->events)
1485 o_reify = EV__IOFDSET; /* actually |= */
944 } 1486 }
945#endif
946 1487
947 { 1488 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); 1489 backend_modify (EV_A_ fd, o_events, anfd->events);
956 }
957 } 1490 }
958 1491
959 fdchangecnt = 0; 1492 fdchangecnt = 0;
960} 1493}
961 1494
… …
973 fdchanges [fdchangecnt - 1] = fd; 1506 fdchanges [fdchangecnt - 1] = fd;
974 } 1507 }
975} 1508}
976 1509
977/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 1510/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
978inline_speed void 1511inline_speed void ecb_cold
979fd_kill (EV_P_ int fd) 1512fd_kill (EV_P_ int fd)
980{ 1513{
981 ev_io *w; 1514 ev_io *w;
982 1515
983 while ((w = (ev_io *)anfds [fd].head)) 1516 while ((w = (ev_io *)anfds [fd].head))
… …
986 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1519 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
987 } 1520 }
988} 1521}
989 1522
990/* check whether the given fd is actually valid, for error recovery */ 1523/* check whether the given fd is actually valid, for error recovery */
991inline_size int 1524inline_size int ecb_cold
992fd_valid (int fd) 1525fd_valid (int fd)
993{ 1526{
994#ifdef _WIN32 1527#ifdef _WIN32
995 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 1528 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
996#else 1529#else
997 return fcntl (fd, F_GETFD) != -1; 1530 return fcntl (fd, F_GETFD) != -1;
998#endif 1531#endif
999} 1532}
1000 1533
1001/* called on EBADF to verify fds */ 1534/* called on EBADF to verify fds */
1002static void noinline 1535static void noinline ecb_cold
1003fd_ebadf (EV_P) 1536fd_ebadf (EV_P)
1004{ 1537{
1005 int fd; 1538 int fd;
1006 1539
1007 for (fd = 0; fd < anfdmax; ++fd) 1540 for (fd = 0; fd < anfdmax; ++fd)
… …
1009 if (!fd_valid (fd) && errno == EBADF) 1542 if (!fd_valid (fd) && errno == EBADF)
1010 fd_kill (EV_A_ fd); 1543 fd_kill (EV_A_ fd);
1011} 1544}
1012 1545
1013/* called on ENOMEM in select/poll to kill some fds and retry */ 1546/* called on ENOMEM in select/poll to kill some fds and retry */
1014static void noinline 1547static void noinline ecb_cold
1015fd_enomem (EV_P) 1548fd_enomem (EV_P)
1016{ 1549{
1017 int fd; 1550 int fd;
1018 1551
1019 for (fd = anfdmax; fd--; ) 1552 for (fd = anfdmax; fd--; )
… …
1054} 1587}
1055 1588
1056/*****************************************************************************/ 1589/*****************************************************************************/
1057 1590
1058/* 1591/*
1059 * the heap functions want a real array index. array index 0 uis guaranteed to not 1592 * 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 1593 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
1061 * the branching factor of the d-tree. 1594 * the branching factor of the d-tree.
1062 */ 1595 */
1063 1596
1064/* 1597/*
… …
1214 1747
1215/*****************************************************************************/ 1748/*****************************************************************************/
1216 1749
1217#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 1750#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1218 1751
1219static void noinline 1752static void noinline ecb_cold
1220evpipe_init (EV_P) 1753evpipe_init (EV_P)
1221{ 1754{
1222 if (!ev_is_active (&pipe_w)) 1755 if (!ev_is_active (&pipe_w))
1223 { 1756 {
1224# if EV_USE_EVENTFD 1757# if EV_USE_EVENTFD
… …
1246 ev_io_start (EV_A_ &pipe_w); 1779 ev_io_start (EV_A_ &pipe_w);
1247 ev_unref (EV_A); /* watcher should not keep loop alive */ 1780 ev_unref (EV_A); /* watcher should not keep loop alive */
1248 } 1781 }
1249} 1782}
1250 1783
1251inline_size void 1784inline_speed void
1252evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1785evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1253{ 1786{
1254 if (!*flag) 1787 if (expect_true (*flag))
1788 return;
1789
1790 *flag = 1;
1791
1792 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1793
1794 pipe_write_skipped = 1;
1795
1796 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1797
1798 if (pipe_write_wanted)
1255 { 1799 {
1800 int old_errno;
1801
1802 pipe_write_skipped = 0; /* just an optimisation, no fence needed */
1803
1256 int old_errno = errno; /* save errno because write might clobber it */ 1804 old_errno = errno; /* save errno because write will clobber it */
1257 char dummy;
1258
1259 *flag = 1;
1260 1805
1261#if EV_USE_EVENTFD 1806#if EV_USE_EVENTFD
1262 if (evfd >= 0) 1807 if (evfd >= 0)
1263 { 1808 {
1264 uint64_t counter = 1; 1809 uint64_t counter = 1;
1265 write (evfd, &counter, sizeof (uint64_t)); 1810 write (evfd, &counter, sizeof (uint64_t));
1266 } 1811 }
1267 else 1812 else
1268#endif 1813#endif
1814 {
1815 /* win32 people keep sending patches that change this write() to send() */
1816 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1817 /* so when you think this write should be a send instead, please find out */
1818 /* where your send() is from - it's definitely not the microsoft send, and */
1819 /* tell me. thank you. */
1269 write (evpipe [1], &dummy, 1); 1820 write (evpipe [1], &(evpipe [1]), 1);
1821 }
1270 1822
1271 errno = old_errno; 1823 errno = old_errno;
1272 } 1824 }
1273} 1825}
1274 1826
… …
1277static void 1829static void
1278pipecb (EV_P_ ev_io *iow, int revents) 1830pipecb (EV_P_ ev_io *iow, int revents)
1279{ 1831{
1280 int i; 1832 int i;
1281 1833
1834 if (revents & EV_READ)
1835 {
1282#if EV_USE_EVENTFD 1836#if EV_USE_EVENTFD
1283 if (evfd >= 0) 1837 if (evfd >= 0)
1284 { 1838 {
1285 uint64_t counter; 1839 uint64_t counter;
1286 read (evfd, &counter, sizeof (uint64_t)); 1840 read (evfd, &counter, sizeof (uint64_t));
1287 } 1841 }
1288 else 1842 else
1289#endif 1843#endif
1290 { 1844 {
1291 char dummy; 1845 char dummy;
1846 /* see discussion in evpipe_write when you think this read should be recv in win32 */
1292 read (evpipe [0], &dummy, 1); 1847 read (evpipe [0], &dummy, 1);
1848 }
1293 } 1849 }
1294 1850
1851 pipe_write_skipped = 0;
1852
1853#if EV_SIGNAL_ENABLE
1295 if (sig_pending) 1854 if (sig_pending)
1296 { 1855 {
1297 sig_pending = 0; 1856 sig_pending = 0;
1298 1857
1299 for (i = EV_NSIG - 1; i--; ) 1858 for (i = EV_NSIG - 1; i--; )
1300 if (expect_false (signals [i].pending)) 1859 if (expect_false (signals [i].pending))
1301 ev_feed_signal_event (EV_A_ i + 1); 1860 ev_feed_signal_event (EV_A_ i + 1);
1302 } 1861 }
1862#endif
1303 1863
1304#if EV_ASYNC_ENABLE 1864#if EV_ASYNC_ENABLE
1305 if (async_pending) 1865 if (async_pending)
1306 { 1866 {
1307 async_pending = 0; 1867 async_pending = 0;
… …
1316#endif 1876#endif
1317} 1877}
1318 1878
1319/*****************************************************************************/ 1879/*****************************************************************************/
1320 1880
1881void
1882ev_feed_signal (int signum)
1883{
1884#if EV_MULTIPLICITY
1885 EV_P = signals [signum - 1].loop;
1886
1887 if (!EV_A)
1888 return;
1889#endif
1890
1891 if (!ev_active (&pipe_w))
1892 return;
1893
1894 signals [signum - 1].pending = 1;
1895 evpipe_write (EV_A_ &sig_pending);
1896}
1897
1321static void 1898static void
1322ev_sighandler (int signum) 1899ev_sighandler (int signum)
1323{ 1900{
1324#if EV_MULTIPLICITY
1325 EV_P = signals [signum - 1].loop;
1326#endif
1327
1328#ifdef _WIN32 1901#ifdef _WIN32
1329 signal (signum, ev_sighandler); 1902 signal (signum, ev_sighandler);
1330#endif 1903#endif
1331 1904
1332 signals [signum - 1].pending = 1; 1905 ev_feed_signal (signum);
1333 evpipe_write (EV_A_ &sig_pending);
1334} 1906}
1335 1907
1336void noinline 1908void noinline
1337ev_feed_signal_event (EV_P_ int signum) 1909ev_feed_signal_event (EV_P_ int signum)
1338{ 1910{
… …
1438 2010
1439#endif 2011#endif
1440 2012
1441/*****************************************************************************/ 2013/*****************************************************************************/
1442 2014
2015#if EV_USE_IOCP
2016# include "ev_iocp.c"
2017#endif
1443#if EV_USE_PORT 2018#if EV_USE_PORT
1444# include "ev_port.c" 2019# include "ev_port.c"
1445#endif 2020#endif
1446#if EV_USE_KQUEUE 2021#if EV_USE_KQUEUE
1447# include "ev_kqueue.c" 2022# include "ev_kqueue.c"
… …
1454#endif 2029#endif
1455#if EV_USE_SELECT 2030#if EV_USE_SELECT
1456# include "ev_select.c" 2031# include "ev_select.c"
1457#endif 2032#endif
1458 2033
1459int 2034int ecb_cold
1460ev_version_major (void) 2035ev_version_major (void)
1461{ 2036{
1462 return EV_VERSION_MAJOR; 2037 return EV_VERSION_MAJOR;
1463} 2038}
1464 2039
1465int 2040int ecb_cold
1466ev_version_minor (void) 2041ev_version_minor (void)
1467{ 2042{
1468 return EV_VERSION_MINOR; 2043 return EV_VERSION_MINOR;
1469} 2044}
1470 2045
1471/* return true if we are running with elevated privileges and should ignore env variables */ 2046/* return true if we are running with elevated privileges and should ignore env variables */
1472int inline_size 2047int inline_size ecb_cold
1473enable_secure (void) 2048enable_secure (void)
1474{ 2049{
1475#ifdef _WIN32 2050#ifdef _WIN32
1476 return 0; 2051 return 0;
1477#else 2052#else
1478 return getuid () != geteuid () 2053 return getuid () != geteuid ()
1479 || getgid () != getegid (); 2054 || getgid () != getegid ();
1480#endif 2055#endif
1481} 2056}
1482 2057
1483unsigned int 2058unsigned int ecb_cold
1484ev_supported_backends (void) 2059ev_supported_backends (void)
1485{ 2060{
1486 unsigned int flags = 0; 2061 unsigned int flags = 0;
1487 2062
1488 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2063 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
… …
1492 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2067 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1493 2068
1494 return flags; 2069 return flags;
1495} 2070}
1496 2071
1497unsigned int 2072unsigned int ecb_cold
1498ev_recommended_backends (void) 2073ev_recommended_backends (void)
1499{ 2074{
1500 unsigned int flags = ev_supported_backends (); 2075 unsigned int flags = ev_supported_backends ();
1501 2076
1502#ifndef __NetBSD__ 2077#ifndef __NetBSD__
… …
1507#ifdef __APPLE__ 2082#ifdef __APPLE__
1508 /* only select works correctly on that "unix-certified" platform */ 2083 /* only select works correctly on that "unix-certified" platform */
1509 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 2084 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1510 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ 2085 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1511#endif 2086#endif
2087#ifdef __FreeBSD__
2088 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2089#endif
1512 2090
1513 return flags; 2091 return flags;
1514} 2092}
1515 2093
1516unsigned int 2094unsigned int ecb_cold
1517ev_embeddable_backends (void) 2095ev_embeddable_backends (void)
1518{ 2096{
1519 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2097 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1520 2098
1521 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2099 /* 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 */ 2100 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1523 flags &= ~EVBACKEND_EPOLL; 2101 flags &= ~EVBACKEND_EPOLL;
1524 2102
1525 return flags; 2103 return flags;
1526} 2104}
1527 2105
1528unsigned int 2106unsigned int
… …
1531 return backend; 2109 return backend;
1532} 2110}
1533 2111
1534#if EV_FEATURE_API 2112#if EV_FEATURE_API
1535unsigned int 2113unsigned int
1536ev_loop_count (EV_P) 2114ev_iteration (EV_P)
1537{ 2115{
1538 return loop_count; 2116 return loop_count;
1539} 2117}
1540 2118
1541unsigned int 2119unsigned int
1542ev_loop_depth (EV_P) 2120ev_depth (EV_P)
1543{ 2121{
1544 return loop_depth; 2122 return loop_depth;
1545} 2123}
1546 2124
1547void 2125void
… …
1566ev_userdata (EV_P) 2144ev_userdata (EV_P)
1567{ 2145{
1568 return userdata; 2146 return userdata;
1569} 2147}
1570 2148
2149void
1571void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2150ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
1572{ 2151{
1573 invoke_cb = invoke_pending_cb; 2152 invoke_cb = invoke_pending_cb;
1574} 2153}
1575 2154
2155void
1576void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2156ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
1577{ 2157{
1578 release_cb = release; 2158 release_cb = release;
1579 acquire_cb = acquire; 2159 acquire_cb = acquire;
1580} 2160}
1581#endif 2161#endif
1582 2162
1583/* initialise a loop structure, must be zero-initialised */ 2163/* initialise a loop structure, must be zero-initialised */
1584static void noinline 2164static void noinline ecb_cold
1585loop_init (EV_P_ unsigned int flags) 2165loop_init (EV_P_ unsigned int flags)
1586{ 2166{
1587 if (!backend) 2167 if (!backend)
1588 { 2168 {
2169 origflags = flags;
2170
1589#if EV_USE_REALTIME 2171#if EV_USE_REALTIME
1590 if (!have_realtime) 2172 if (!have_realtime)
1591 { 2173 {
1592 struct timespec ts; 2174 struct timespec ts;
1593 2175
… …
1615 if (!(flags & EVFLAG_NOENV) 2197 if (!(flags & EVFLAG_NOENV)
1616 && !enable_secure () 2198 && !enable_secure ()
1617 && getenv ("LIBEV_FLAGS")) 2199 && getenv ("LIBEV_FLAGS"))
1618 flags = atoi (getenv ("LIBEV_FLAGS")); 2200 flags = atoi (getenv ("LIBEV_FLAGS"));
1619 2201
1620 ev_rt_now = ev_time (); 2202 ev_rt_now = ev_time ();
1621 mn_now = get_clock (); 2203 mn_now = get_clock ();
1622 now_floor = mn_now; 2204 now_floor = mn_now;
1623 rtmn_diff = ev_rt_now - mn_now; 2205 rtmn_diff = ev_rt_now - mn_now;
1624#if EV_FEATURE_API 2206#if EV_FEATURE_API
1625 invoke_cb = ev_invoke_pending; 2207 invoke_cb = ev_invoke_pending;
1626#endif 2208#endif
1627 2209
1628 io_blocktime = 0.; 2210 io_blocktime = 0.;
1629 timeout_blocktime = 0.; 2211 timeout_blocktime = 0.;
1630 backend = 0; 2212 backend = 0;
1631 backend_fd = -1; 2213 backend_fd = -1;
1632 sig_pending = 0; 2214 sig_pending = 0;
1633#if EV_ASYNC_ENABLE 2215#if EV_ASYNC_ENABLE
1634 async_pending = 0; 2216 async_pending = 0;
1635#endif 2217#endif
2218 pipe_write_skipped = 0;
2219 pipe_write_wanted = 0;
1636#if EV_USE_INOTIFY 2220#if EV_USE_INOTIFY
1637 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 2221 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1638#endif 2222#endif
1639#if EV_USE_SIGNALFD 2223#if EV_USE_SIGNALFD
1640 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 2224 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1641#endif 2225#endif
1642 2226
1643 if (!(flags & 0x0000ffffU)) 2227 if (!(flags & EVBACKEND_MASK))
1644 flags |= ev_recommended_backends (); 2228 flags |= ev_recommended_backends ();
1645 2229
2230#if EV_USE_IOCP
2231 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2232#endif
1646#if EV_USE_PORT 2233#if EV_USE_PORT
1647 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2234 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1648#endif 2235#endif
1649#if EV_USE_KQUEUE 2236#if EV_USE_KQUEUE
1650 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2237 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1667#endif 2254#endif
1668 } 2255 }
1669} 2256}
1670 2257
1671/* free up a loop structure */ 2258/* free up a loop structure */
1672static void noinline 2259void ecb_cold
1673loop_destroy (EV_P) 2260ev_loop_destroy (EV_P)
1674{ 2261{
1675 int i; 2262 int i;
2263
2264#if EV_MULTIPLICITY
2265 /* mimic free (0) */
2266 if (!EV_A)
2267 return;
2268#endif
2269
2270#if EV_CLEANUP_ENABLE
2271 /* queue cleanup watchers (and execute them) */
2272 if (expect_false (cleanupcnt))
2273 {
2274 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2275 EV_INVOKE_PENDING;
2276 }
2277#endif
2278
2279#if EV_CHILD_ENABLE
2280 if (ev_is_active (&childev))
2281 {
2282 ev_ref (EV_A); /* child watcher */
2283 ev_signal_stop (EV_A_ &childev);
2284 }
2285#endif
1676 2286
1677 if (ev_is_active (&pipe_w)) 2287 if (ev_is_active (&pipe_w))
1678 { 2288 {
1679 /*ev_ref (EV_A);*/ 2289 /*ev_ref (EV_A);*/
1680 /*ev_io_stop (EV_A_ &pipe_w);*/ 2290 /*ev_io_stop (EV_A_ &pipe_w);*/
… …
1702#endif 2312#endif
1703 2313
1704 if (backend_fd >= 0) 2314 if (backend_fd >= 0)
1705 close (backend_fd); 2315 close (backend_fd);
1706 2316
2317#if EV_USE_IOCP
2318 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2319#endif
1707#if EV_USE_PORT 2320#if EV_USE_PORT
1708 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 2321 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1709#endif 2322#endif
1710#if EV_USE_KQUEUE 2323#if EV_USE_KQUEUE
1711 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2324 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1738 array_free (periodic, EMPTY); 2351 array_free (periodic, EMPTY);
1739#endif 2352#endif
1740#if EV_FORK_ENABLE 2353#if EV_FORK_ENABLE
1741 array_free (fork, EMPTY); 2354 array_free (fork, EMPTY);
1742#endif 2355#endif
2356#if EV_CLEANUP_ENABLE
2357 array_free (cleanup, EMPTY);
2358#endif
1743 array_free (prepare, EMPTY); 2359 array_free (prepare, EMPTY);
1744 array_free (check, EMPTY); 2360 array_free (check, EMPTY);
1745#if EV_ASYNC_ENABLE 2361#if EV_ASYNC_ENABLE
1746 array_free (async, EMPTY); 2362 array_free (async, EMPTY);
1747#endif 2363#endif
1748 2364
1749 backend = 0; 2365 backend = 0;
2366
2367#if EV_MULTIPLICITY
2368 if (ev_is_default_loop (EV_A))
2369#endif
2370 ev_default_loop_ptr = 0;
2371#if EV_MULTIPLICITY
2372 else
2373 ev_free (EV_A);
2374#endif
1750} 2375}
1751 2376
1752#if EV_USE_INOTIFY 2377#if EV_USE_INOTIFY
1753inline_size void infy_fork (EV_P); 2378inline_size void infy_fork (EV_P);
1754#endif 2379#endif
… …
1769 infy_fork (EV_A); 2394 infy_fork (EV_A);
1770#endif 2395#endif
1771 2396
1772 if (ev_is_active (&pipe_w)) 2397 if (ev_is_active (&pipe_w))
1773 { 2398 {
1774 /* this "locks" the handlers against writing to the pipe */ 2399 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1775 /* while we modify the fd vars */
1776 sig_pending = 1;
1777#if EV_ASYNC_ENABLE
1778 async_pending = 1;
1779#endif
1780 2400
1781 ev_ref (EV_A); 2401 ev_ref (EV_A);
1782 ev_io_stop (EV_A_ &pipe_w); 2402 ev_io_stop (EV_A_ &pipe_w);
1783 2403
1784#if EV_USE_EVENTFD 2404#if EV_USE_EVENTFD
… …
1802 postfork = 0; 2422 postfork = 0;
1803} 2423}
1804 2424
1805#if EV_MULTIPLICITY 2425#if EV_MULTIPLICITY
1806 2426
1807struct ev_loop * 2427struct ev_loop * ecb_cold
1808ev_loop_new (unsigned int flags) 2428ev_loop_new (unsigned int flags)
1809{ 2429{
1810 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2430 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1811 2431
1812 memset (EV_A, 0, sizeof (struct ev_loop)); 2432 memset (EV_A, 0, sizeof (struct ev_loop));
1813 loop_init (EV_A_ flags); 2433 loop_init (EV_A_ flags);
1814 2434
1815 if (ev_backend (EV_A)) 2435 if (ev_backend (EV_A))
1816 return EV_A; 2436 return EV_A;
1817 2437
2438 ev_free (EV_A);
1818 return 0; 2439 return 0;
1819} 2440}
1820 2441
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 */ 2442#endif /* multiplicity */
1834 2443
1835#if EV_VERIFY 2444#if EV_VERIFY
1836static void noinline 2445static void noinline ecb_cold
1837verify_watcher (EV_P_ W w) 2446verify_watcher (EV_P_ W w)
1838{ 2447{
1839 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2448 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1840 2449
1841 if (w->pending) 2450 if (w->pending)
1842 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2451 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1843} 2452}
1844 2453
1845static void noinline 2454static void noinline ecb_cold
1846verify_heap (EV_P_ ANHE *heap, int N) 2455verify_heap (EV_P_ ANHE *heap, int N)
1847{ 2456{
1848 int i; 2457 int i;
1849 2458
1850 for (i = HEAP0; i < N + HEAP0; ++i) 2459 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1855 2464
1856 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2465 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1857 } 2466 }
1858} 2467}
1859 2468
1860static void noinline 2469static void noinline ecb_cold
1861array_verify (EV_P_ W *ws, int cnt) 2470array_verify (EV_P_ W *ws, int cnt)
1862{ 2471{
1863 while (cnt--) 2472 while (cnt--)
1864 { 2473 {
1865 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2474 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
1867 } 2476 }
1868} 2477}
1869#endif 2478#endif
1870 2479
1871#if EV_FEATURE_API 2480#if EV_FEATURE_API
1872void 2481void ecb_cold
1873ev_loop_verify (EV_P) 2482ev_verify (EV_P)
1874{ 2483{
1875#if EV_VERIFY 2484#if EV_VERIFY
1876 int i; 2485 int i;
1877 WL w; 2486 WL w;
1878 2487
… …
1912#if EV_FORK_ENABLE 2521#if EV_FORK_ENABLE
1913 assert (forkmax >= forkcnt); 2522 assert (forkmax >= forkcnt);
1914 array_verify (EV_A_ (W *)forks, forkcnt); 2523 array_verify (EV_A_ (W *)forks, forkcnt);
1915#endif 2524#endif
1916 2525
2526#if EV_CLEANUP_ENABLE
2527 assert (cleanupmax >= cleanupcnt);
2528 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2529#endif
2530
1917#if EV_ASYNC_ENABLE 2531#if EV_ASYNC_ENABLE
1918 assert (asyncmax >= asynccnt); 2532 assert (asyncmax >= asynccnt);
1919 array_verify (EV_A_ (W *)asyncs, asynccnt); 2533 array_verify (EV_A_ (W *)asyncs, asynccnt);
1920#endif 2534#endif
1921 2535
… …
1938#endif 2552#endif
1939} 2553}
1940#endif 2554#endif
1941 2555
1942#if EV_MULTIPLICITY 2556#if EV_MULTIPLICITY
1943struct ev_loop * 2557struct ev_loop * ecb_cold
1944ev_default_loop_init (unsigned int flags)
1945#else 2558#else
1946int 2559int
2560#endif
1947ev_default_loop (unsigned int flags) 2561ev_default_loop (unsigned int flags)
1948#endif
1949{ 2562{
1950 if (!ev_default_loop_ptr) 2563 if (!ev_default_loop_ptr)
1951 { 2564 {
1952#if EV_MULTIPLICITY 2565#if EV_MULTIPLICITY
1953 EV_P = ev_default_loop_ptr = &default_loop_struct; 2566 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
1972 2585
1973 return ev_default_loop_ptr; 2586 return ev_default_loop_ptr;
1974} 2587}
1975 2588
1976void 2589void
1977ev_default_destroy (void) 2590ev_loop_fork (EV_P)
1978{ 2591{
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 */ 2592 postfork = 1; /* must be in line with ev_default_fork */
2001} 2593}
2002 2594
2003/*****************************************************************************/ 2595/*****************************************************************************/
2004 2596
2005void 2597void
… …
2027 2619
2028 for (pri = NUMPRI; pri--; ) 2620 for (pri = NUMPRI; pri--; )
2029 while (pendingcnt [pri]) 2621 while (pendingcnt [pri])
2030 { 2622 {
2031 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2623 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 2624
2036 p->w->pending = 0; 2625 p->w->pending = 0;
2037 EV_CB_INVOKE (p->w, p->events); 2626 EV_CB_INVOKE (p->w, p->events);
2038 EV_FREQUENT_CHECK; 2627 EV_FREQUENT_CHECK;
2039 } 2628 }
… …
2096 EV_FREQUENT_CHECK; 2685 EV_FREQUENT_CHECK;
2097 feed_reverse (EV_A_ (W)w); 2686 feed_reverse (EV_A_ (W)w);
2098 } 2687 }
2099 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); 2688 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
2100 2689
2101 feed_reverse_done (EV_A_ EV_TIMEOUT); 2690 feed_reverse_done (EV_A_ EV_TIMER);
2102 } 2691 }
2103} 2692}
2104 2693
2105#if EV_PERIODIC_ENABLE 2694#if EV_PERIODIC_ENABLE
2695
2696static void noinline
2697periodic_recalc (EV_P_ ev_periodic *w)
2698{
2699 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2700 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2701
2702 /* the above almost always errs on the low side */
2703 while (at <= ev_rt_now)
2704 {
2705 ev_tstamp nat = at + w->interval;
2706
2707 /* when resolution fails us, we use ev_rt_now */
2708 if (expect_false (nat == at))
2709 {
2710 at = ev_rt_now;
2711 break;
2712 }
2713
2714 at = nat;
2715 }
2716
2717 ev_at (w) = at;
2718}
2719
2106/* make periodics pending */ 2720/* make periodics pending */
2107inline_size void 2721inline_size void
2108periodics_reify (EV_P) 2722periodics_reify (EV_P)
2109{ 2723{
2110 EV_FREQUENT_CHECK; 2724 EV_FREQUENT_CHECK;
… …
2129 ANHE_at_cache (periodics [HEAP0]); 2743 ANHE_at_cache (periodics [HEAP0]);
2130 downheap (periodics, periodiccnt, HEAP0); 2744 downheap (periodics, periodiccnt, HEAP0);
2131 } 2745 }
2132 else if (w->interval) 2746 else if (w->interval)
2133 { 2747 {
2134 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2748 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]); 2749 ANHE_at_cache (periodics [HEAP0]);
2149 downheap (periodics, periodiccnt, HEAP0); 2750 downheap (periodics, periodiccnt, HEAP0);
2150 } 2751 }
2151 else 2752 else
2152 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 2753 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
2159 feed_reverse_done (EV_A_ EV_PERIODIC); 2760 feed_reverse_done (EV_A_ EV_PERIODIC);
2160 } 2761 }
2161} 2762}
2162 2763
2163/* simply recalculate all periodics */ 2764/* simply recalculate all periodics */
2164/* TODO: maybe ensure that at leats one event happens when jumping forward? */ 2765/* TODO: maybe ensure that at least one event happens when jumping forward? */
2165static void noinline 2766static void noinline ecb_cold
2166periodics_reschedule (EV_P) 2767periodics_reschedule (EV_P)
2167{ 2768{
2168 int i; 2769 int i;
2169 2770
2170 /* adjust periodics after time jump */ 2771 /* adjust periodics after time jump */
… …
2173 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 2774 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2174 2775
2175 if (w->reschedule_cb) 2776 if (w->reschedule_cb)
2176 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2777 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2177 else if (w->interval) 2778 else if (w->interval)
2178 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2779 periodic_recalc (EV_A_ w);
2179 2780
2180 ANHE_at_cache (periodics [i]); 2781 ANHE_at_cache (periodics [i]);
2181 } 2782 }
2182 2783
2183 reheap (periodics, periodiccnt); 2784 reheap (periodics, periodiccnt);
2184} 2785}
2185#endif 2786#endif
2186 2787
2187/* adjust all timers by a given offset */ 2788/* adjust all timers by a given offset */
2188static void noinline 2789static void noinline ecb_cold
2189timers_reschedule (EV_P_ ev_tstamp adjust) 2790timers_reschedule (EV_P_ ev_tstamp adjust)
2190{ 2791{
2191 int i; 2792 int i;
2192 2793
2193 for (i = 0; i < timercnt; ++i) 2794 for (i = 0; i < timercnt; ++i)
… …
2230 * doesn't hurt either as we only do this on time-jumps or 2831 * doesn't hurt either as we only do this on time-jumps or
2231 * in the unlikely event of having been preempted here. 2832 * in the unlikely event of having been preempted here.
2232 */ 2833 */
2233 for (i = 4; --i; ) 2834 for (i = 4; --i; )
2234 { 2835 {
2836 ev_tstamp diff;
2235 rtmn_diff = ev_rt_now - mn_now; 2837 rtmn_diff = ev_rt_now - mn_now;
2236 2838
2839 diff = odiff - rtmn_diff;
2840
2237 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 2841 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2238 return; /* all is well */ 2842 return; /* all is well */
2239 2843
2240 ev_rt_now = ev_time (); 2844 ev_rt_now = ev_time ();
2241 mn_now = get_clock (); 2845 mn_now = get_clock ();
2242 now_floor = mn_now; 2846 now_floor = mn_now;
… …
2265 mn_now = ev_rt_now; 2869 mn_now = ev_rt_now;
2266 } 2870 }
2267} 2871}
2268 2872
2269void 2873void
2270ev_loop (EV_P_ int flags) 2874ev_run (EV_P_ int flags)
2271{ 2875{
2272#if EV_FEATURE_API 2876#if EV_FEATURE_API
2273 ++loop_depth; 2877 ++loop_depth;
2274#endif 2878#endif
2275 2879
2276 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE)); 2880 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2277 2881
2278 loop_done = EVUNLOOP_CANCEL; 2882 loop_done = EVBREAK_CANCEL;
2279 2883
2280 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ 2884 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2281 2885
2282 do 2886 do
2283 { 2887 {
2284#if EV_VERIFY >= 2 2888#if EV_VERIFY >= 2
2285 ev_loop_verify (EV_A); 2889 ev_verify (EV_A);
2286#endif 2890#endif
2287 2891
2288#ifndef _WIN32 2892#ifndef _WIN32
2289 if (expect_false (curpid)) /* penalise the forking check even more */ 2893 if (expect_false (curpid)) /* penalise the forking check even more */
2290 if (expect_false (getpid () != curpid)) 2894 if (expect_false (getpid () != curpid))
… …
2326 /* calculate blocking time */ 2930 /* calculate blocking time */
2327 { 2931 {
2328 ev_tstamp waittime = 0.; 2932 ev_tstamp waittime = 0.;
2329 ev_tstamp sleeptime = 0.; 2933 ev_tstamp sleeptime = 0.;
2330 2934
2935 /* remember old timestamp for io_blocktime calculation */
2936 ev_tstamp prev_mn_now = mn_now;
2937
2938 /* update time to cancel out callback processing overhead */
2939 time_update (EV_A_ 1e100);
2940
2941 /* from now on, we want a pipe-wake-up */
2942 pipe_write_wanted = 1;
2943
2944 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
2945
2331 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2946 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2332 { 2947 {
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; 2948 waittime = MAX_BLOCKTIME;
2340 2949
2341 if (timercnt) 2950 if (timercnt)
2342 { 2951 {
2343 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 2952 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2344 if (waittime > to) waittime = to; 2953 if (waittime > to) waittime = to;
2345 } 2954 }
2346 2955
2347#if EV_PERIODIC_ENABLE 2956#if EV_PERIODIC_ENABLE
2348 if (periodiccnt) 2957 if (periodiccnt)
2349 { 2958 {
2350 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 2959 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2351 if (waittime > to) waittime = to; 2960 if (waittime > to) waittime = to;
2352 } 2961 }
2353#endif 2962#endif
2354 2963
2355 /* don't let timeouts decrease the waittime below timeout_blocktime */ 2964 /* don't let timeouts decrease the waittime below timeout_blocktime */
2356 if (expect_false (waittime < timeout_blocktime)) 2965 if (expect_false (waittime < timeout_blocktime))
2357 waittime = timeout_blocktime; 2966 waittime = timeout_blocktime;
2967
2968 /* at this point, we NEED to wait, so we have to ensure */
2969 /* to pass a minimum nonzero value to the backend */
2970 if (expect_false (waittime < backend_mintime))
2971 waittime = backend_mintime;
2358 2972
2359 /* extra check because io_blocktime is commonly 0 */ 2973 /* extra check because io_blocktime is commonly 0 */
2360 if (expect_false (io_blocktime)) 2974 if (expect_false (io_blocktime))
2361 { 2975 {
2362 sleeptime = io_blocktime - (mn_now - prev_mn_now); 2976 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2363 2977
2364 if (sleeptime > waittime - backend_fudge) 2978 if (sleeptime > waittime - backend_mintime)
2365 sleeptime = waittime - backend_fudge; 2979 sleeptime = waittime - backend_mintime;
2366 2980
2367 if (expect_true (sleeptime > 0.)) 2981 if (expect_true (sleeptime > 0.))
2368 { 2982 {
2369 ev_sleep (sleeptime); 2983 ev_sleep (sleeptime);
2370 waittime -= sleeptime; 2984 waittime -= sleeptime;
… …
2373 } 2987 }
2374 2988
2375#if EV_FEATURE_API 2989#if EV_FEATURE_API
2376 ++loop_count; 2990 ++loop_count;
2377#endif 2991#endif
2378 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ 2992 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2379 backend_poll (EV_A_ waittime); 2993 backend_poll (EV_A_ waittime);
2380 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */ 2994 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2995
2996 pipe_write_wanted = 0; /* just an optimsiation, no fence needed */
2997
2998 if (pipe_write_skipped)
2999 {
3000 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3001 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3002 }
3003
2381 3004
2382 /* update ev_rt_now, do magic */ 3005 /* update ev_rt_now, do magic */
2383 time_update (EV_A_ waittime + sleeptime); 3006 time_update (EV_A_ waittime + sleeptime);
2384 } 3007 }
2385 3008
… …
2403 EV_INVOKE_PENDING; 3026 EV_INVOKE_PENDING;
2404 } 3027 }
2405 while (expect_true ( 3028 while (expect_true (
2406 activecnt 3029 activecnt
2407 && !loop_done 3030 && !loop_done
2408 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3031 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2409 )); 3032 ));
2410 3033
2411 if (loop_done == EVUNLOOP_ONE) 3034 if (loop_done == EVBREAK_ONE)
2412 loop_done = EVUNLOOP_CANCEL; 3035 loop_done = EVBREAK_CANCEL;
2413 3036
2414#if EV_FEATURE_API 3037#if EV_FEATURE_API
2415 --loop_depth; 3038 --loop_depth;
2416#endif 3039#endif
2417} 3040}
2418 3041
2419void 3042void
2420ev_unloop (EV_P_ int how) 3043ev_break (EV_P_ int how)
2421{ 3044{
2422 loop_done = how; 3045 loop_done = how;
2423} 3046}
2424 3047
2425void 3048void
… …
2573 EV_FREQUENT_CHECK; 3196 EV_FREQUENT_CHECK;
2574 3197
2575 wlist_del (&anfds[w->fd].head, (WL)w); 3198 wlist_del (&anfds[w->fd].head, (WL)w);
2576 ev_stop (EV_A_ (W)w); 3199 ev_stop (EV_A_ (W)w);
2577 3200
2578 fd_change (EV_A_ w->fd, 1); 3201 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2579 3202
2580 EV_FREQUENT_CHECK; 3203 EV_FREQUENT_CHECK;
2581} 3204}
2582 3205
2583void noinline 3206void noinline
… …
2675 if (w->reschedule_cb) 3298 if (w->reschedule_cb)
2676 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3299 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2677 else if (w->interval) 3300 else if (w->interval)
2678 { 3301 {
2679 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 3302 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 */ 3303 periodic_recalc (EV_A_ w);
2681 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2682 } 3304 }
2683 else 3305 else
2684 ev_at (w) = w->offset; 3306 ev_at (w) = w->offset;
2685 3307
2686 EV_FREQUENT_CHECK; 3308 EV_FREQUENT_CHECK;
… …
2807 sa.sa_handler = ev_sighandler; 3429 sa.sa_handler = ev_sighandler;
2808 sigfillset (&sa.sa_mask); 3430 sigfillset (&sa.sa_mask);
2809 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3431 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2810 sigaction (w->signum, &sa, 0); 3432 sigaction (w->signum, &sa, 0);
2811 3433
3434 if (origflags & EVFLAG_NOSIGMASK)
3435 {
2812 sigemptyset (&sa.sa_mask); 3436 sigemptyset (&sa.sa_mask);
2813 sigaddset (&sa.sa_mask, w->signum); 3437 sigaddset (&sa.sa_mask, w->signum);
2814 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); 3438 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3439 }
2815#endif 3440#endif
2816 } 3441 }
2817 3442
2818 EV_FREQUENT_CHECK; 3443 EV_FREQUENT_CHECK;
2819} 3444}
… …
2960 if (!pend || pend == path) 3585 if (!pend || pend == path)
2961 break; 3586 break;
2962 3587
2963 *pend = 0; 3588 *pend = 0;
2964 w->wd = inotify_add_watch (fs_fd, path, mask); 3589 w->wd = inotify_add_watch (fs_fd, path, mask);
2965 } 3590 }
2966 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3591 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2967 } 3592 }
2968 } 3593 }
2969 3594
2970 if (w->wd >= 0) 3595 if (w->wd >= 0)
… …
3037 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3662 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3038 ofs += sizeof (struct inotify_event) + ev->len; 3663 ofs += sizeof (struct inotify_event) + ev->len;
3039 } 3664 }
3040} 3665}
3041 3666
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}
3073
3074inline_size void 3667inline_size void ecb_cold
3075ev_check_2625 (EV_P) 3668ev_check_2625 (EV_P)
3076{ 3669{
3077 /* kernels < 2.6.25 are borked 3670 /* kernels < 2.6.25 are borked
3078 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 3671 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3079 */ 3672 */
… …
3400 3993
3401#if EV_EMBED_ENABLE 3994#if EV_EMBED_ENABLE
3402void noinline 3995void noinline
3403ev_embed_sweep (EV_P_ ev_embed *w) 3996ev_embed_sweep (EV_P_ ev_embed *w)
3404{ 3997{
3405 ev_loop (w->other, EVLOOP_NONBLOCK); 3998 ev_run (w->other, EVRUN_NOWAIT);
3406} 3999}
3407 4000
3408static void 4001static void
3409embed_io_cb (EV_P_ ev_io *io, int revents) 4002embed_io_cb (EV_P_ ev_io *io, int revents)
3410{ 4003{
3411 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4004 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3412 4005
3413 if (ev_cb (w)) 4006 if (ev_cb (w))
3414 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4007 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3415 else 4008 else
3416 ev_loop (w->other, EVLOOP_NONBLOCK); 4009 ev_run (w->other, EVRUN_NOWAIT);
3417} 4010}
3418 4011
3419static void 4012static void
3420embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4013embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3421{ 4014{
… …
3425 EV_P = w->other; 4018 EV_P = w->other;
3426 4019
3427 while (fdchangecnt) 4020 while (fdchangecnt)
3428 { 4021 {
3429 fd_reify (EV_A); 4022 fd_reify (EV_A);
3430 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4023 ev_run (EV_A_ EVRUN_NOWAIT);
3431 } 4024 }
3432 } 4025 }
3433} 4026}
3434 4027
3435static void 4028static void
… …
3441 4034
3442 { 4035 {
3443 EV_P = w->other; 4036 EV_P = w->other;
3444 4037
3445 ev_loop_fork (EV_A); 4038 ev_loop_fork (EV_A);
3446 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4039 ev_run (EV_A_ EVRUN_NOWAIT);
3447 } 4040 }
3448 4041
3449 ev_embed_start (EV_A_ w); 4042 ev_embed_start (EV_A_ w);
3450} 4043}
3451 4044
… …
3543 4136
3544 EV_FREQUENT_CHECK; 4137 EV_FREQUENT_CHECK;
3545} 4138}
3546#endif 4139#endif
3547 4140
4141#if EV_CLEANUP_ENABLE
4142void
4143ev_cleanup_start (EV_P_ ev_cleanup *w)
4144{
4145 if (expect_false (ev_is_active (w)))
4146 return;
4147
4148 EV_FREQUENT_CHECK;
4149
4150 ev_start (EV_A_ (W)w, ++cleanupcnt);
4151 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
4152 cleanups [cleanupcnt - 1] = w;
4153
4154 /* cleanup watchers should never keep a refcount on the loop */
4155 ev_unref (EV_A);
4156 EV_FREQUENT_CHECK;
4157}
4158
4159void
4160ev_cleanup_stop (EV_P_ ev_cleanup *w)
4161{
4162 clear_pending (EV_A_ (W)w);
4163 if (expect_false (!ev_is_active (w)))
4164 return;
4165
4166 EV_FREQUENT_CHECK;
4167 ev_ref (EV_A);
4168
4169 {
4170 int active = ev_active (w);
4171
4172 cleanups [active - 1] = cleanups [--cleanupcnt];
4173 ev_active (cleanups [active - 1]) = active;
4174 }
4175
4176 ev_stop (EV_A_ (W)w);
4177
4178 EV_FREQUENT_CHECK;
4179}
4180#endif
4181
3548#if EV_ASYNC_ENABLE 4182#if EV_ASYNC_ENABLE
3549void 4183void
3550ev_async_start (EV_P_ ev_async *w) 4184ev_async_start (EV_P_ ev_async *w)
3551{ 4185{
3552 if (expect_false (ev_is_active (w))) 4186 if (expect_false (ev_is_active (w)))
3553 return; 4187 return;
4188
4189 w->sent = 0;
3554 4190
3555 evpipe_init (EV_A); 4191 evpipe_init (EV_A);
3556 4192
3557 EV_FREQUENT_CHECK; 4193 EV_FREQUENT_CHECK;
3558 4194
… …
3636{ 4272{
3637 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4273 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3638 4274
3639 if (expect_false (!once)) 4275 if (expect_false (!once))
3640 { 4276 {
3641 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 4277 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3642 return; 4278 return;
3643 } 4279 }
3644 4280
3645 once->cb = cb; 4281 once->cb = cb;
3646 once->arg = arg; 4282 once->arg = arg;
… …
3661} 4297}
3662 4298
3663/*****************************************************************************/ 4299/*****************************************************************************/
3664 4300
3665#if EV_WALK_ENABLE 4301#if EV_WALK_ENABLE
3666void 4302void ecb_cold
3667ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 4303ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3668{ 4304{
3669 int i, j; 4305 int i, j;
3670 ev_watcher_list *wl, *wn; 4306 ev_watcher_list *wl, *wn;
3671 4307
… …
3715 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 4351 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3716#endif 4352#endif
3717 4353
3718#if EV_IDLE_ENABLE 4354#if EV_IDLE_ENABLE
3719 if (types & EV_IDLE) 4355 if (types & EV_IDLE)
3720 for (j = NUMPRI; i--; ) 4356 for (j = NUMPRI; j--; )
3721 for (i = idlecnt [j]; i--; ) 4357 for (i = idlecnt [j]; i--; )
3722 cb (EV_A_ EV_IDLE, idles [j][i]); 4358 cb (EV_A_ EV_IDLE, idles [j][i]);
3723#endif 4359#endif
3724 4360
3725#if EV_FORK_ENABLE 4361#if EV_FORK_ENABLE
… …
3778 4414
3779#if EV_MULTIPLICITY 4415#if EV_MULTIPLICITY
3780 #include "ev_wrap.h" 4416 #include "ev_wrap.h"
3781#endif 4417#endif
3782 4418
3783#ifdef __cplusplus
3784}
3785#endif
3786

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