ViewVC Help
View File | Revision Log | Show Annotations | Download File
/cvs/libev/ev.c
(Generate patch)

Comparing libev/ev.c (file contents):
Revision 1.341 by root, Tue Mar 16 20:48:29 2010 UTC vs.
Revision 1.398 by root, Sun Sep 25 21:27:35 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#endif
544
545#ifndef ECB_MEMORY_FENCE
546 #if ECB_GCC_VERSION(2,5) || defined(__INTEL_COMPILER) || defined(__clang__)
547 #if __i386__
548 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
549 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE /* non-lock xchg might be enough */
550 #define ECB_MEMORY_FENCE_RELEASE do { } while (0) /* unlikely to change in future cpus */
551 #elif __amd64
552 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
553 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("lfence" : : : "memory")
554 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("sfence") /* play safe - not needed in any current cpu */
555 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
556 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
557 #elif defined(__ARM_ARCH_6__ ) || defined(__ARM_ARCH_6J__ ) \
558 || defined(__ARM_ARCH_6K__) || defined(__ARM_ARCH_6ZK__)
559 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
560 #elif defined(__ARM_ARCH_7__ ) || defined(__ARM_ARCH_7A__ ) \
561 || defined(__ARM_ARCH_7M__) || defined(__ARM_ARCH_7R__ )
562 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
563 #endif
564 #endif
565#endif
566
567#ifndef ECB_MEMORY_FENCE
568 #if ECB_GCC_VERSION(4,4) || defined(__INTEL_COMPILER) || defined(__clang__)
569 #define ECB_MEMORY_FENCE __sync_synchronize ()
570 /*#define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); }) */
571 /*#define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); }) */
572 #elif _MSC_VER >= 1400 /* VC++ 2005 */
573 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
574 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
575 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
576 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
577 #elif defined(_WIN32)
578 #include <WinNT.h>
579 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
580 #endif
581#endif
582
583#ifndef ECB_MEMORY_FENCE
584 #if !ECB_AVOID_PTHREADS
585 /*
586 * if you get undefined symbol references to pthread_mutex_lock,
587 * or failure to find pthread.h, then you should implement
588 * the ECB_MEMORY_FENCE operations for your cpu/compiler
589 * OR provide pthread.h and link against the posix thread library
590 * of your system.
591 */
592 #include <pthread.h>
593 #define ECB_NEEDS_PTHREADS 1
594 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
595
596 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
597 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
598 #endif
599#endif
600
601#if !defined(ECB_MEMORY_FENCE_ACQUIRE) && defined(ECB_MEMORY_FENCE)
602 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
603#endif
604
605#if !defined(ECB_MEMORY_FENCE_RELEASE) && defined(ECB_MEMORY_FENCE)
606 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
607#endif
608
609/*****************************************************************************/
610
611#define ECB_C99 (__STDC_VERSION__ >= 199901L)
612
613#if __cplusplus
614 #define ecb_inline static inline
615#elif ECB_GCC_VERSION(2,5)
616 #define ecb_inline static __inline__
617#elif ECB_C99
618 #define ecb_inline static inline
619#else
620 #define ecb_inline static
621#endif
622
623#if ECB_GCC_VERSION(3,3)
624 #define ecb_restrict __restrict__
625#elif ECB_C99
626 #define ecb_restrict restrict
627#else
628 #define ecb_restrict
629#endif
630
631typedef int ecb_bool;
632
633#define ECB_CONCAT_(a, b) a ## b
634#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
635#define ECB_STRINGIFY_(a) # a
636#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
637
638#define ecb_function_ ecb_inline
639
640#if ECB_GCC_VERSION(3,1)
641 #define ecb_attribute(attrlist) __attribute__(attrlist)
642 #define ecb_is_constant(expr) __builtin_constant_p (expr)
643 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
644 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
645#else
646 #define ecb_attribute(attrlist)
647 #define ecb_is_constant(expr) 0
648 #define ecb_expect(expr,value) (expr)
649 #define ecb_prefetch(addr,rw,locality)
650#endif
651
652/* no emulation for ecb_decltype */
653#if ECB_GCC_VERSION(4,5)
654 #define ecb_decltype(x) __decltype(x)
655#elif ECB_GCC_VERSION(3,0)
656 #define ecb_decltype(x) __typeof(x)
657#endif
658
659#define ecb_noinline ecb_attribute ((__noinline__))
660#define ecb_noreturn ecb_attribute ((__noreturn__))
661#define ecb_unused ecb_attribute ((__unused__))
662#define ecb_const ecb_attribute ((__const__))
663#define ecb_pure ecb_attribute ((__pure__))
664
665#if ECB_GCC_VERSION(4,3)
666 #define ecb_artificial ecb_attribute ((__artificial__))
667 #define ecb_hot ecb_attribute ((__hot__))
668 #define ecb_cold ecb_attribute ((__cold__))
669#else
670 #define ecb_artificial
671 #define ecb_hot
672 #define ecb_cold
673#endif
674
675/* put around conditional expressions if you are very sure that the */
676/* expression is mostly true or mostly false. note that these return */
677/* booleans, not the expression. */
469#define expect_false(expr) expect ((expr) != 0, 0) 678#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
470#define expect_true(expr) expect ((expr) != 0, 1) 679#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
680/* for compatibility to the rest of the world */
681#define ecb_likely(expr) ecb_expect_true (expr)
682#define ecb_unlikely(expr) ecb_expect_false (expr)
683
684/* count trailing zero bits and count # of one bits */
685#if ECB_GCC_VERSION(3,4)
686 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
687 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
688 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
689 #define ecb_ctz32(x) __builtin_ctz (x)
690 #define ecb_ctz64(x) __builtin_ctzll (x)
691 #define ecb_popcount32(x) __builtin_popcount (x)
692 /* no popcountll */
693#else
694 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const;
695 ecb_function_ int
696 ecb_ctz32 (uint32_t x)
697 {
698 int r = 0;
699
700 x &= ~x + 1; /* this isolates the lowest bit */
701
702#if ECB_branchless_on_i386
703 r += !!(x & 0xaaaaaaaa) << 0;
704 r += !!(x & 0xcccccccc) << 1;
705 r += !!(x & 0xf0f0f0f0) << 2;
706 r += !!(x & 0xff00ff00) << 3;
707 r += !!(x & 0xffff0000) << 4;
708#else
709 if (x & 0xaaaaaaaa) r += 1;
710 if (x & 0xcccccccc) r += 2;
711 if (x & 0xf0f0f0f0) r += 4;
712 if (x & 0xff00ff00) r += 8;
713 if (x & 0xffff0000) r += 16;
714#endif
715
716 return r;
717 }
718
719 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const;
720 ecb_function_ int
721 ecb_ctz64 (uint64_t x)
722 {
723 int shift = x & 0xffffffffU ? 0 : 32;
724 return ecb_ctz32 (x >> shift) + shift;
725 }
726
727 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const;
728 ecb_function_ int
729 ecb_popcount32 (uint32_t x)
730 {
731 x -= (x >> 1) & 0x55555555;
732 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
733 x = ((x >> 4) + x) & 0x0f0f0f0f;
734 x *= 0x01010101;
735
736 return x >> 24;
737 }
738
739 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const;
740 ecb_function_ int ecb_ld32 (uint32_t x)
741 {
742 int r = 0;
743
744 if (x >> 16) { x >>= 16; r += 16; }
745 if (x >> 8) { x >>= 8; r += 8; }
746 if (x >> 4) { x >>= 4; r += 4; }
747 if (x >> 2) { x >>= 2; r += 2; }
748 if (x >> 1) { r += 1; }
749
750 return r;
751 }
752
753 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const;
754 ecb_function_ int ecb_ld64 (uint64_t x)
755 {
756 int r = 0;
757
758 if (x >> 32) { x >>= 32; r += 32; }
759
760 return r + ecb_ld32 (x);
761 }
762#endif
763
764/* popcount64 is only available on 64 bit cpus as gcc builtin */
765/* so for this version we are lazy */
766ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const;
767ecb_function_ int
768ecb_popcount64 (uint64_t x)
769{
770 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
771}
772
773ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const;
774ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const;
775ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const;
776ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const;
777ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const;
778ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const;
779ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const;
780ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const;
781
782ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
783ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
784ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
785ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
786ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
787ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
788ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
789ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
790
791#if ECB_GCC_VERSION(4,3)
792 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
793 #define ecb_bswap32(x) __builtin_bswap32 (x)
794 #define ecb_bswap64(x) __builtin_bswap64 (x)
795#else
796 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const;
797 ecb_function_ uint16_t
798 ecb_bswap16 (uint16_t x)
799 {
800 return ecb_rotl16 (x, 8);
801 }
802
803 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const;
804 ecb_function_ uint32_t
805 ecb_bswap32 (uint32_t x)
806 {
807 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
808 }
809
810 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const;
811 ecb_function_ uint64_t
812 ecb_bswap64 (uint64_t x)
813 {
814 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
815 }
816#endif
817
818#if ECB_GCC_VERSION(4,5)
819 #define ecb_unreachable() __builtin_unreachable ()
820#else
821 /* this seems to work fine, but gcc always emits a warning for it :/ */
822 ecb_function_ void ecb_unreachable (void) ecb_noreturn;
823 ecb_function_ void ecb_unreachable (void) { }
824#endif
825
826/* try to tell the compiler that some condition is definitely true */
827#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0)
828
829ecb_function_ unsigned char ecb_byteorder_helper (void) ecb_const;
830ecb_function_ unsigned char
831ecb_byteorder_helper (void)
832{
833 const uint32_t u = 0x11223344;
834 return *(unsigned char *)&u;
835}
836
837ecb_function_ ecb_bool ecb_big_endian (void) ecb_const;
838ecb_function_ ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
839ecb_function_ ecb_bool ecb_little_endian (void) ecb_const;
840ecb_function_ ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }
841
842#if ECB_GCC_VERSION(3,0) || ECB_C99
843 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
844#else
845 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
846#endif
847
848#if __cplusplus
849 template<typename T>
850 static inline T ecb_div_rd (T val, T div)
851 {
852 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
853 }
854 template<typename T>
855 static inline T ecb_div_ru (T val, T div)
856 {
857 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
858 }
859#else
860 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
861 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
862#endif
863
864#if ecb_cplusplus_does_not_suck
865 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
866 template<typename T, int N>
867 static inline int ecb_array_length (const T (&arr)[N])
868 {
869 return N;
870 }
871#else
872 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
873#endif
874
875#endif
876
877/* ECB.H END */
878
879#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
880/* if your architecture doesn't need memory fences, e.g. because it is
881 * single-cpu/core, or if you use libev in a project that doesn't use libev
882 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
883 * libev, in which casess the memory fences become nops.
884 * alternatively, you can remove this #error and link against libpthread,
885 * which will then provide the memory fences.
886 */
887# error "memory fences not defined for your architecture, please report"
888#endif
889
890#ifndef ECB_MEMORY_FENCE
891# define ECB_MEMORY_FENCE do { } while (0)
892# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
893# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
894#endif
895
896#define expect_false(cond) ecb_expect_false (cond)
897#define expect_true(cond) ecb_expect_true (cond)
898#define noinline ecb_noinline
899
471#define inline_size static inline 900#define inline_size ecb_inline
472 901
473#if EV_FEATURE_CODE 902#if EV_FEATURE_CODE
474# define inline_speed static inline 903# define inline_speed ecb_inline
475#else 904#else
476# define inline_speed static noinline 905# define inline_speed static noinline
477#endif 906#endif
478 907
479#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 908#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
… …
494#define ev_active(w) ((W)(w))->active 923#define ev_active(w) ((W)(w))->active
495#define ev_at(w) ((WT)(w))->at 924#define ev_at(w) ((WT)(w))->at
496 925
497#if EV_USE_REALTIME 926#if EV_USE_REALTIME
498/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 927/* 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 */ 928/* giving it a reasonably high chance of working on typical architectures */
500static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 929static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
501#endif 930#endif
502 931
503#if EV_USE_MONOTONIC 932#if EV_USE_MONOTONIC
504static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 933static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
… …
518# include "ev_win32.c" 947# include "ev_win32.c"
519#endif 948#endif
520 949
521/*****************************************************************************/ 950/*****************************************************************************/
522 951
952/* define a suitable floor function (only used by periodics atm) */
953
954#if EV_USE_FLOOR
955# include <math.h>
956# define ev_floor(v) floor (v)
957#else
958
959#include <float.h>
960
961/* a floor() replacement function, should be independent of ev_tstamp type */
962static ev_tstamp noinline
963ev_floor (ev_tstamp v)
964{
965 /* the choice of shift factor is not terribly important */
966#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
967 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
968#else
969 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
970#endif
971
972 /* argument too large for an unsigned long? */
973 if (expect_false (v >= shift))
974 {
975 ev_tstamp f;
976
977 if (v == v - 1.)
978 return v; /* very large number */
979
980 f = shift * ev_floor (v * (1. / shift));
981 return f + ev_floor (v - f);
982 }
983
984 /* special treatment for negative args? */
985 if (expect_false (v < 0.))
986 {
987 ev_tstamp f = -ev_floor (-v);
988
989 return f - (f == v ? 0 : 1);
990 }
991
992 /* fits into an unsigned long */
993 return (unsigned long)v;
994}
995
996#endif
997
998/*****************************************************************************/
999
1000#ifdef __linux
1001# include <sys/utsname.h>
1002#endif
1003
1004static unsigned int noinline ecb_cold
1005ev_linux_version (void)
1006{
1007#ifdef __linux
1008 unsigned int v = 0;
1009 struct utsname buf;
1010 int i;
1011 char *p = buf.release;
1012
1013 if (uname (&buf))
1014 return 0;
1015
1016 for (i = 3+1; --i; )
1017 {
1018 unsigned int c = 0;
1019
1020 for (;;)
1021 {
1022 if (*p >= '0' && *p <= '9')
1023 c = c * 10 + *p++ - '0';
1024 else
1025 {
1026 p += *p == '.';
1027 break;
1028 }
1029 }
1030
1031 v = (v << 8) | c;
1032 }
1033
1034 return v;
1035#else
1036 return 0;
1037#endif
1038}
1039
1040/*****************************************************************************/
1041
523#if EV_AVOID_STDIO 1042#if EV_AVOID_STDIO
524static void noinline 1043static void noinline ecb_cold
525ev_printerr (const char *msg) 1044ev_printerr (const char *msg)
526{ 1045{
527 write (STDERR_FILENO, msg, strlen (msg)); 1046 write (STDERR_FILENO, msg, strlen (msg));
528} 1047}
529#endif 1048#endif
530 1049
531static void (*syserr_cb)(const char *msg); 1050static void (*syserr_cb)(const char *msg);
532 1051
533void 1052void ecb_cold
534ev_set_syserr_cb (void (*cb)(const char *msg)) 1053ev_set_syserr_cb (void (*cb)(const char *msg))
535{ 1054{
536 syserr_cb = cb; 1055 syserr_cb = cb;
537} 1056}
538 1057
539static void noinline 1058static void noinline ecb_cold
540ev_syserr (const char *msg) 1059ev_syserr (const char *msg)
541{ 1060{
542 if (!msg) 1061 if (!msg)
543 msg = "(libev) system error"; 1062 msg = "(libev) system error";
544 1063
545 if (syserr_cb) 1064 if (syserr_cb)
546 syserr_cb (msg); 1065 syserr_cb (msg);
547 else 1066 else
548 { 1067 {
549#if EV_AVOID_STDIO 1068#if EV_AVOID_STDIO
550 const char *err = strerror (errno);
551
552 ev_printerr (msg); 1069 ev_printerr (msg);
553 ev_printerr (": "); 1070 ev_printerr (": ");
554 ev_printerr (err); 1071 ev_printerr (strerror (errno));
555 ev_printerr ("\n"); 1072 ev_printerr ("\n");
556#else 1073#else
557 perror (msg); 1074 perror (msg);
558#endif 1075#endif
559 abort (); 1076 abort ();
… …
579#endif 1096#endif
580} 1097}
581 1098
582static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1099static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
583 1100
584void 1101void ecb_cold
585ev_set_allocator (void *(*cb)(void *ptr, long size)) 1102ev_set_allocator (void *(*cb)(void *ptr, long size))
586{ 1103{
587 alloc = cb; 1104 alloc = cb;
588} 1105}
589 1106
… …
593 ptr = alloc (ptr, size); 1110 ptr = alloc (ptr, size);
594 1111
595 if (!ptr && size) 1112 if (!ptr && size)
596 { 1113 {
597#if EV_AVOID_STDIO 1114#if EV_AVOID_STDIO
598 ev_printerr ("libev: memory allocation failed, aborting.\n"); 1115 ev_printerr ("(libev) memory allocation failed, aborting.\n");
599#else 1116#else
600 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1117 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
601#endif 1118#endif
602 abort (); 1119 abort ();
603 } 1120 }
604 1121
605 return ptr; 1122 return ptr;
… …
622 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1139 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
623 unsigned char unused; 1140 unsigned char unused;
624#if EV_USE_EPOLL 1141#if EV_USE_EPOLL
625 unsigned int egen; /* generation counter to counter epoll bugs */ 1142 unsigned int egen; /* generation counter to counter epoll bugs */
626#endif 1143#endif
627#if EV_SELECT_IS_WINSOCKET 1144#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
628 SOCKET handle; 1145 SOCKET handle;
1146#endif
1147#if EV_USE_IOCP
1148 OVERLAPPED or, ow;
629#endif 1149#endif
630} ANFD; 1150} ANFD;
631 1151
632/* stores the pending event set for a given watcher */ 1152/* stores the pending event set for a given watcher */
633typedef struct 1153typedef struct
… …
698# define EV_RELEASE_CB (void)0 1218# define EV_RELEASE_CB (void)0
699# define EV_ACQUIRE_CB (void)0 1219# define EV_ACQUIRE_CB (void)0
700# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 1220# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
701#endif 1221#endif
702 1222
703#define EVUNLOOP_RECURSE 0x80 1223#define EVBREAK_RECURSE 0x80
704 1224
705/*****************************************************************************/ 1225/*****************************************************************************/
706 1226
707#ifndef EV_HAVE_EV_TIME 1227#ifndef EV_HAVE_EV_TIME
708ev_tstamp 1228ev_tstamp
… …
752 if (delay > 0.) 1272 if (delay > 0.)
753 { 1273 {
754#if EV_USE_NANOSLEEP 1274#if EV_USE_NANOSLEEP
755 struct timespec ts; 1275 struct timespec ts;
756 1276
757 ts.tv_sec = (time_t)delay; 1277 EV_TS_SET (ts, delay);
758 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
759
760 nanosleep (&ts, 0); 1278 nanosleep (&ts, 0);
761#elif defined(_WIN32) 1279#elif defined(_WIN32)
762 Sleep ((unsigned long)(delay * 1e3)); 1280 Sleep ((unsigned long)(delay * 1e3));
763#else 1281#else
764 struct timeval tv; 1282 struct timeval tv;
765 1283
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 */ 1284 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
770 /* something not guaranteed by newer posix versions, but guaranteed */ 1285 /* something not guaranteed by newer posix versions, but guaranteed */
771 /* by older ones */ 1286 /* by older ones */
1287 EV_TV_SET (tv, delay);
772 select (0, 0, 0, 0, &tv); 1288 select (0, 0, 0, 0, &tv);
773#endif 1289#endif
774 } 1290 }
775} 1291}
776 1292
777/*****************************************************************************/ 1293/*****************************************************************************/
778 1294
779#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 1295#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
780 1296
781/* find a suitable new size for the given array, */ 1297/* find a suitable new size for the given array, */
782/* hopefully by rounding to a ncie-to-malloc size */ 1298/* hopefully by rounding to a nice-to-malloc size */
783inline_size int 1299inline_size int
784array_nextsize (int elem, int cur, int cnt) 1300array_nextsize (int elem, int cur, int cnt)
785{ 1301{
786 int ncur = cur + 1; 1302 int ncur = cur + 1;
787 1303
… …
799 } 1315 }
800 1316
801 return ncur; 1317 return ncur;
802} 1318}
803 1319
804static noinline void * 1320static void * noinline ecb_cold
805array_realloc (int elem, void *base, int *cur, int cnt) 1321array_realloc (int elem, void *base, int *cur, int cnt)
806{ 1322{
807 *cur = array_nextsize (elem, *cur, cnt); 1323 *cur = array_nextsize (elem, *cur, cnt);
808 return ev_realloc (base, elem * *cur); 1324 return ev_realloc (base, elem * *cur);
809} 1325}
… …
812 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1328 memset ((void *)(base), 0, sizeof (*(base)) * (count))
813 1329
814#define array_needsize(type,base,cur,cnt,init) \ 1330#define array_needsize(type,base,cur,cnt,init) \
815 if (expect_false ((cnt) > (cur))) \ 1331 if (expect_false ((cnt) > (cur))) \
816 { \ 1332 { \
817 int ocur_ = (cur); \ 1333 int ecb_unused ocur_ = (cur); \
818 (base) = (type *)array_realloc \ 1334 (base) = (type *)array_realloc \
819 (sizeof (type), (base), &(cur), (cnt)); \ 1335 (sizeof (type), (base), &(cur), (cnt)); \
820 init ((base) + (ocur_), (cur) - ocur_); \ 1336 init ((base) + (ocur_), (cur) - ocur_); \
821 } 1337 }
822 1338
… …
922inline_size void 1438inline_size void
923fd_reify (EV_P) 1439fd_reify (EV_P)
924{ 1440{
925 int i; 1441 int i;
926 1442
1443#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1444 for (i = 0; i < fdchangecnt; ++i)
1445 {
1446 int fd = fdchanges [i];
1447 ANFD *anfd = anfds + fd;
1448
1449 if (anfd->reify & EV__IOFDSET && anfd->head)
1450 {
1451 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1452
1453 if (handle != anfd->handle)
1454 {
1455 unsigned long arg;
1456
1457 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1458
1459 /* handle changed, but fd didn't - we need to do it in two steps */
1460 backend_modify (EV_A_ fd, anfd->events, 0);
1461 anfd->events = 0;
1462 anfd->handle = handle;
1463 }
1464 }
1465 }
1466#endif
1467
927 for (i = 0; i < fdchangecnt; ++i) 1468 for (i = 0; i < fdchangecnt; ++i)
928 { 1469 {
929 int fd = fdchanges [i]; 1470 int fd = fdchanges [i];
930 ANFD *anfd = anfds + fd; 1471 ANFD *anfd = anfds + fd;
931 ev_io *w; 1472 ev_io *w;
932 1473
933 unsigned char events = 0; 1474 unsigned char o_events = anfd->events;
1475 unsigned char o_reify = anfd->reify;
934 1476
935 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1477 anfd->reify = 0;
936 events |= (unsigned char)w->events;
937 1478
938#if EV_SELECT_IS_WINSOCKET 1479 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
939 if (events)
940 { 1480 {
941 unsigned long arg; 1481 anfd->events = 0;
942 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1482
943 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1483 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
1484 anfd->events |= (unsigned char)w->events;
1485
1486 if (o_events != anfd->events)
1487 o_reify = EV__IOFDSET; /* actually |= */
944 } 1488 }
945#endif
946 1489
947 { 1490 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); 1491 backend_modify (EV_A_ fd, o_events, anfd->events);
956 }
957 } 1492 }
958 1493
959 fdchangecnt = 0; 1494 fdchangecnt = 0;
960} 1495}
961 1496
… …
973 fdchanges [fdchangecnt - 1] = fd; 1508 fdchanges [fdchangecnt - 1] = fd;
974 } 1509 }
975} 1510}
976 1511
977/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 1512/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
978inline_speed void 1513inline_speed void ecb_cold
979fd_kill (EV_P_ int fd) 1514fd_kill (EV_P_ int fd)
980{ 1515{
981 ev_io *w; 1516 ev_io *w;
982 1517
983 while ((w = (ev_io *)anfds [fd].head)) 1518 while ((w = (ev_io *)anfds [fd].head))
… …
986 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1521 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
987 } 1522 }
988} 1523}
989 1524
990/* check whether the given fd is actually valid, for error recovery */ 1525/* check whether the given fd is actually valid, for error recovery */
991inline_size int 1526inline_size int ecb_cold
992fd_valid (int fd) 1527fd_valid (int fd)
993{ 1528{
994#ifdef _WIN32 1529#ifdef _WIN32
995 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 1530 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
996#else 1531#else
997 return fcntl (fd, F_GETFD) != -1; 1532 return fcntl (fd, F_GETFD) != -1;
998#endif 1533#endif
999} 1534}
1000 1535
1001/* called on EBADF to verify fds */ 1536/* called on EBADF to verify fds */
1002static void noinline 1537static void noinline ecb_cold
1003fd_ebadf (EV_P) 1538fd_ebadf (EV_P)
1004{ 1539{
1005 int fd; 1540 int fd;
1006 1541
1007 for (fd = 0; fd < anfdmax; ++fd) 1542 for (fd = 0; fd < anfdmax; ++fd)
… …
1009 if (!fd_valid (fd) && errno == EBADF) 1544 if (!fd_valid (fd) && errno == EBADF)
1010 fd_kill (EV_A_ fd); 1545 fd_kill (EV_A_ fd);
1011} 1546}
1012 1547
1013/* called on ENOMEM in select/poll to kill some fds and retry */ 1548/* called on ENOMEM in select/poll to kill some fds and retry */
1014static void noinline 1549static void noinline ecb_cold
1015fd_enomem (EV_P) 1550fd_enomem (EV_P)
1016{ 1551{
1017 int fd; 1552 int fd;
1018 1553
1019 for (fd = anfdmax; fd--; ) 1554 for (fd = anfdmax; fd--; )
… …
1054} 1589}
1055 1590
1056/*****************************************************************************/ 1591/*****************************************************************************/
1057 1592
1058/* 1593/*
1059 * the heap functions want a real array index. array index 0 uis guaranteed to not 1594 * 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 1595 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
1061 * the branching factor of the d-tree. 1596 * the branching factor of the d-tree.
1062 */ 1597 */
1063 1598
1064/* 1599/*
… …
1214 1749
1215/*****************************************************************************/ 1750/*****************************************************************************/
1216 1751
1217#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 1752#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1218 1753
1219static void noinline 1754static void noinline ecb_cold
1220evpipe_init (EV_P) 1755evpipe_init (EV_P)
1221{ 1756{
1222 if (!ev_is_active (&pipe_w)) 1757 if (!ev_is_active (&pipe_w))
1223 { 1758 {
1224# if EV_USE_EVENTFD 1759# if EV_USE_EVENTFD
… …
1246 ev_io_start (EV_A_ &pipe_w); 1781 ev_io_start (EV_A_ &pipe_w);
1247 ev_unref (EV_A); /* watcher should not keep loop alive */ 1782 ev_unref (EV_A); /* watcher should not keep loop alive */
1248 } 1783 }
1249} 1784}
1250 1785
1251inline_size void 1786inline_speed void
1252evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1787evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1253{ 1788{
1254 if (!*flag) 1789 if (expect_true (*flag))
1790 return;
1791
1792 *flag = 1;
1793
1794 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1795
1796 pipe_write_skipped = 1;
1797
1798 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1799
1800 if (pipe_write_wanted)
1255 { 1801 {
1802 int old_errno;
1803
1804 pipe_write_skipped = 0; /* just an optimisation, no fence needed */
1805
1256 int old_errno = errno; /* save errno because write might clobber it */ 1806 old_errno = errno; /* save errno because write will clobber it */
1257 char dummy;
1258
1259 *flag = 1;
1260 1807
1261#if EV_USE_EVENTFD 1808#if EV_USE_EVENTFD
1262 if (evfd >= 0) 1809 if (evfd >= 0)
1263 { 1810 {
1264 uint64_t counter = 1; 1811 uint64_t counter = 1;
1265 write (evfd, &counter, sizeof (uint64_t)); 1812 write (evfd, &counter, sizeof (uint64_t));
1266 } 1813 }
1267 else 1814 else
1268#endif 1815#endif
1816 {
1817 /* win32 people keep sending patches that change this write() to send() */
1818 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1819 /* so when you think this write should be a send instead, please find out */
1820 /* where your send() is from - it's definitely not the microsoft send, and */
1821 /* tell me. thank you. */
1269 write (evpipe [1], &dummy, 1); 1822 write (evpipe [1], &(evpipe [1]), 1);
1823 }
1270 1824
1271 errno = old_errno; 1825 errno = old_errno;
1272 } 1826 }
1273} 1827}
1274 1828
… …
1277static void 1831static void
1278pipecb (EV_P_ ev_io *iow, int revents) 1832pipecb (EV_P_ ev_io *iow, int revents)
1279{ 1833{
1280 int i; 1834 int i;
1281 1835
1836 if (revents & EV_READ)
1837 {
1282#if EV_USE_EVENTFD 1838#if EV_USE_EVENTFD
1283 if (evfd >= 0) 1839 if (evfd >= 0)
1284 { 1840 {
1285 uint64_t counter; 1841 uint64_t counter;
1286 read (evfd, &counter, sizeof (uint64_t)); 1842 read (evfd, &counter, sizeof (uint64_t));
1287 } 1843 }
1288 else 1844 else
1289#endif 1845#endif
1290 { 1846 {
1291 char dummy; 1847 char dummy;
1848 /* see discussion in evpipe_write when you think this read should be recv in win32 */
1292 read (evpipe [0], &dummy, 1); 1849 read (evpipe [0], &dummy, 1);
1850 }
1293 } 1851 }
1294 1852
1853 pipe_write_skipped = 0;
1854
1855#if EV_SIGNAL_ENABLE
1295 if (sig_pending) 1856 if (sig_pending)
1296 { 1857 {
1297 sig_pending = 0; 1858 sig_pending = 0;
1298 1859
1299 for (i = EV_NSIG - 1; i--; ) 1860 for (i = EV_NSIG - 1; i--; )
1300 if (expect_false (signals [i].pending)) 1861 if (expect_false (signals [i].pending))
1301 ev_feed_signal_event (EV_A_ i + 1); 1862 ev_feed_signal_event (EV_A_ i + 1);
1302 } 1863 }
1864#endif
1303 1865
1304#if EV_ASYNC_ENABLE 1866#if EV_ASYNC_ENABLE
1305 if (async_pending) 1867 if (async_pending)
1306 { 1868 {
1307 async_pending = 0; 1869 async_pending = 0;
… …
1316#endif 1878#endif
1317} 1879}
1318 1880
1319/*****************************************************************************/ 1881/*****************************************************************************/
1320 1882
1883void
1884ev_feed_signal (int signum)
1885{
1886#if EV_MULTIPLICITY
1887 EV_P = signals [signum - 1].loop;
1888
1889 if (!EV_A)
1890 return;
1891#endif
1892
1893 if (!ev_active (&pipe_w))
1894 return;
1895
1896 signals [signum - 1].pending = 1;
1897 evpipe_write (EV_A_ &sig_pending);
1898}
1899
1321static void 1900static void
1322ev_sighandler (int signum) 1901ev_sighandler (int signum)
1323{ 1902{
1324#if EV_MULTIPLICITY
1325 EV_P = signals [signum - 1].loop;
1326#endif
1327
1328#ifdef _WIN32 1903#ifdef _WIN32
1329 signal (signum, ev_sighandler); 1904 signal (signum, ev_sighandler);
1330#endif 1905#endif
1331 1906
1332 signals [signum - 1].pending = 1; 1907 ev_feed_signal (signum);
1333 evpipe_write (EV_A_ &sig_pending);
1334} 1908}
1335 1909
1336void noinline 1910void noinline
1337ev_feed_signal_event (EV_P_ int signum) 1911ev_feed_signal_event (EV_P_ int signum)
1338{ 1912{
… …
1438 2012
1439#endif 2013#endif
1440 2014
1441/*****************************************************************************/ 2015/*****************************************************************************/
1442 2016
2017#if EV_USE_IOCP
2018# include "ev_iocp.c"
2019#endif
1443#if EV_USE_PORT 2020#if EV_USE_PORT
1444# include "ev_port.c" 2021# include "ev_port.c"
1445#endif 2022#endif
1446#if EV_USE_KQUEUE 2023#if EV_USE_KQUEUE
1447# include "ev_kqueue.c" 2024# include "ev_kqueue.c"
… …
1454#endif 2031#endif
1455#if EV_USE_SELECT 2032#if EV_USE_SELECT
1456# include "ev_select.c" 2033# include "ev_select.c"
1457#endif 2034#endif
1458 2035
1459int 2036int ecb_cold
1460ev_version_major (void) 2037ev_version_major (void)
1461{ 2038{
1462 return EV_VERSION_MAJOR; 2039 return EV_VERSION_MAJOR;
1463} 2040}
1464 2041
1465int 2042int ecb_cold
1466ev_version_minor (void) 2043ev_version_minor (void)
1467{ 2044{
1468 return EV_VERSION_MINOR; 2045 return EV_VERSION_MINOR;
1469} 2046}
1470 2047
1471/* return true if we are running with elevated privileges and should ignore env variables */ 2048/* return true if we are running with elevated privileges and should ignore env variables */
1472int inline_size 2049int inline_size ecb_cold
1473enable_secure (void) 2050enable_secure (void)
1474{ 2051{
1475#ifdef _WIN32 2052#ifdef _WIN32
1476 return 0; 2053 return 0;
1477#else 2054#else
1478 return getuid () != geteuid () 2055 return getuid () != geteuid ()
1479 || getgid () != getegid (); 2056 || getgid () != getegid ();
1480#endif 2057#endif
1481} 2058}
1482 2059
1483unsigned int 2060unsigned int ecb_cold
1484ev_supported_backends (void) 2061ev_supported_backends (void)
1485{ 2062{
1486 unsigned int flags = 0; 2063 unsigned int flags = 0;
1487 2064
1488 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2065 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
… …
1492 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2069 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1493 2070
1494 return flags; 2071 return flags;
1495} 2072}
1496 2073
1497unsigned int 2074unsigned int ecb_cold
1498ev_recommended_backends (void) 2075ev_recommended_backends (void)
1499{ 2076{
1500 unsigned int flags = ev_supported_backends (); 2077 unsigned int flags = ev_supported_backends ();
1501 2078
1502#ifndef __NetBSD__ 2079#ifndef __NetBSD__
… …
1507#ifdef __APPLE__ 2084#ifdef __APPLE__
1508 /* only select works correctly on that "unix-certified" platform */ 2085 /* only select works correctly on that "unix-certified" platform */
1509 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ 2086 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1510 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ 2087 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1511#endif 2088#endif
2089#ifdef __FreeBSD__
2090 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
2091#endif
1512 2092
1513 return flags; 2093 return flags;
1514} 2094}
1515 2095
1516unsigned int 2096unsigned int ecb_cold
1517ev_embeddable_backends (void) 2097ev_embeddable_backends (void)
1518{ 2098{
1519 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2099 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1520 2100
1521 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2101 /* 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 */ 2102 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1523 flags &= ~EVBACKEND_EPOLL; 2103 flags &= ~EVBACKEND_EPOLL;
1524 2104
1525 return flags; 2105 return flags;
1526} 2106}
1527 2107
1528unsigned int 2108unsigned int
… …
1566ev_userdata (EV_P) 2146ev_userdata (EV_P)
1567{ 2147{
1568 return userdata; 2148 return userdata;
1569} 2149}
1570 2150
2151void
1571void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2152ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
1572{ 2153{
1573 invoke_cb = invoke_pending_cb; 2154 invoke_cb = invoke_pending_cb;
1574} 2155}
1575 2156
2157void
1576void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2158ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
1577{ 2159{
1578 release_cb = release; 2160 release_cb = release;
1579 acquire_cb = acquire; 2161 acquire_cb = acquire;
1580} 2162}
1581#endif 2163#endif
1582 2164
1583/* initialise a loop structure, must be zero-initialised */ 2165/* initialise a loop structure, must be zero-initialised */
1584static void noinline 2166static void noinline ecb_cold
1585loop_init (EV_P_ unsigned int flags) 2167loop_init (EV_P_ unsigned int flags)
1586{ 2168{
1587 if (!backend) 2169 if (!backend)
1588 { 2170 {
2171 origflags = flags;
2172
1589#if EV_USE_REALTIME 2173#if EV_USE_REALTIME
1590 if (!have_realtime) 2174 if (!have_realtime)
1591 { 2175 {
1592 struct timespec ts; 2176 struct timespec ts;
1593 2177
… …
1615 if (!(flags & EVFLAG_NOENV) 2199 if (!(flags & EVFLAG_NOENV)
1616 && !enable_secure () 2200 && !enable_secure ()
1617 && getenv ("LIBEV_FLAGS")) 2201 && getenv ("LIBEV_FLAGS"))
1618 flags = atoi (getenv ("LIBEV_FLAGS")); 2202 flags = atoi (getenv ("LIBEV_FLAGS"));
1619 2203
1620 ev_rt_now = ev_time (); 2204 ev_rt_now = ev_time ();
1621 mn_now = get_clock (); 2205 mn_now = get_clock ();
1622 now_floor = mn_now; 2206 now_floor = mn_now;
1623 rtmn_diff = ev_rt_now - mn_now; 2207 rtmn_diff = ev_rt_now - mn_now;
1624#if EV_FEATURE_API 2208#if EV_FEATURE_API
1625 invoke_cb = ev_invoke_pending; 2209 invoke_cb = ev_invoke_pending;
1626#endif 2210#endif
1627 2211
1628 io_blocktime = 0.; 2212 io_blocktime = 0.;
1629 timeout_blocktime = 0.; 2213 timeout_blocktime = 0.;
1630 backend = 0; 2214 backend = 0;
1631 backend_fd = -1; 2215 backend_fd = -1;
1632 sig_pending = 0; 2216 sig_pending = 0;
1633#if EV_ASYNC_ENABLE 2217#if EV_ASYNC_ENABLE
1634 async_pending = 0; 2218 async_pending = 0;
1635#endif 2219#endif
2220 pipe_write_skipped = 0;
2221 pipe_write_wanted = 0;
1636#if EV_USE_INOTIFY 2222#if EV_USE_INOTIFY
1637 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 2223 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1638#endif 2224#endif
1639#if EV_USE_SIGNALFD 2225#if EV_USE_SIGNALFD
1640 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 2226 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1641#endif 2227#endif
1642 2228
1643 if (!(flags & 0x0000ffffU)) 2229 if (!(flags & EVBACKEND_MASK))
1644 flags |= ev_recommended_backends (); 2230 flags |= ev_recommended_backends ();
1645 2231
2232#if EV_USE_IOCP
2233 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2234#endif
1646#if EV_USE_PORT 2235#if EV_USE_PORT
1647 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2236 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1648#endif 2237#endif
1649#if EV_USE_KQUEUE 2238#if EV_USE_KQUEUE
1650 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2239 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1667#endif 2256#endif
1668 } 2257 }
1669} 2258}
1670 2259
1671/* free up a loop structure */ 2260/* free up a loop structure */
1672static void noinline 2261void ecb_cold
1673loop_destroy (EV_P) 2262ev_loop_destroy (EV_P)
1674{ 2263{
1675 int i; 2264 int i;
2265
2266#if EV_MULTIPLICITY
2267 /* mimic free (0) */
2268 if (!EV_A)
2269 return;
2270#endif
2271
2272#if EV_CLEANUP_ENABLE
2273 /* queue cleanup watchers (and execute them) */
2274 if (expect_false (cleanupcnt))
2275 {
2276 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2277 EV_INVOKE_PENDING;
2278 }
2279#endif
2280
2281#if EV_CHILD_ENABLE
2282 if (ev_is_active (&childev))
2283 {
2284 ev_ref (EV_A); /* child watcher */
2285 ev_signal_stop (EV_A_ &childev);
2286 }
2287#endif
1676 2288
1677 if (ev_is_active (&pipe_w)) 2289 if (ev_is_active (&pipe_w))
1678 { 2290 {
1679 /*ev_ref (EV_A);*/ 2291 /*ev_ref (EV_A);*/
1680 /*ev_io_stop (EV_A_ &pipe_w);*/ 2292 /*ev_io_stop (EV_A_ &pipe_w);*/
… …
1702#endif 2314#endif
1703 2315
1704 if (backend_fd >= 0) 2316 if (backend_fd >= 0)
1705 close (backend_fd); 2317 close (backend_fd);
1706 2318
2319#if EV_USE_IOCP
2320 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2321#endif
1707#if EV_USE_PORT 2322#if EV_USE_PORT
1708 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 2323 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1709#endif 2324#endif
1710#if EV_USE_KQUEUE 2325#if EV_USE_KQUEUE
1711 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2326 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1738 array_free (periodic, EMPTY); 2353 array_free (periodic, EMPTY);
1739#endif 2354#endif
1740#if EV_FORK_ENABLE 2355#if EV_FORK_ENABLE
1741 array_free (fork, EMPTY); 2356 array_free (fork, EMPTY);
1742#endif 2357#endif
2358#if EV_CLEANUP_ENABLE
2359 array_free (cleanup, EMPTY);
2360#endif
1743 array_free (prepare, EMPTY); 2361 array_free (prepare, EMPTY);
1744 array_free (check, EMPTY); 2362 array_free (check, EMPTY);
1745#if EV_ASYNC_ENABLE 2363#if EV_ASYNC_ENABLE
1746 array_free (async, EMPTY); 2364 array_free (async, EMPTY);
1747#endif 2365#endif
1748 2366
1749 backend = 0; 2367 backend = 0;
2368
2369#if EV_MULTIPLICITY
2370 if (ev_is_default_loop (EV_A))
2371#endif
2372 ev_default_loop_ptr = 0;
2373#if EV_MULTIPLICITY
2374 else
2375 ev_free (EV_A);
2376#endif
1750} 2377}
1751 2378
1752#if EV_USE_INOTIFY 2379#if EV_USE_INOTIFY
1753inline_size void infy_fork (EV_P); 2380inline_size void infy_fork (EV_P);
1754#endif 2381#endif
… …
1769 infy_fork (EV_A); 2396 infy_fork (EV_A);
1770#endif 2397#endif
1771 2398
1772 if (ev_is_active (&pipe_w)) 2399 if (ev_is_active (&pipe_w))
1773 { 2400 {
1774 /* this "locks" the handlers against writing to the pipe */ 2401 /* 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 2402
1781 ev_ref (EV_A); 2403 ev_ref (EV_A);
1782 ev_io_stop (EV_A_ &pipe_w); 2404 ev_io_stop (EV_A_ &pipe_w);
1783 2405
1784#if EV_USE_EVENTFD 2406#if EV_USE_EVENTFD
… …
1802 postfork = 0; 2424 postfork = 0;
1803} 2425}
1804 2426
1805#if EV_MULTIPLICITY 2427#if EV_MULTIPLICITY
1806 2428
1807struct ev_loop * 2429struct ev_loop * ecb_cold
1808ev_loop_new (unsigned int flags) 2430ev_loop_new (unsigned int flags)
1809{ 2431{
1810 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2432 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1811 2433
1812 memset (EV_A, 0, sizeof (struct ev_loop)); 2434 memset (EV_A, 0, sizeof (struct ev_loop));
1813 loop_init (EV_A_ flags); 2435 loop_init (EV_A_ flags);
1814 2436
1815 if (ev_backend (EV_A)) 2437 if (ev_backend (EV_A))
1816 return EV_A; 2438 return EV_A;
1817 2439
2440 ev_free (EV_A);
1818 return 0; 2441 return 0;
1819} 2442}
1820 2443
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 */ 2444#endif /* multiplicity */
1834 2445
1835#if EV_VERIFY 2446#if EV_VERIFY
1836static void noinline 2447static void noinline ecb_cold
1837verify_watcher (EV_P_ W w) 2448verify_watcher (EV_P_ W w)
1838{ 2449{
1839 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2450 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1840 2451
1841 if (w->pending) 2452 if (w->pending)
1842 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2453 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1843} 2454}
1844 2455
1845static void noinline 2456static void noinline ecb_cold
1846verify_heap (EV_P_ ANHE *heap, int N) 2457verify_heap (EV_P_ ANHE *heap, int N)
1847{ 2458{
1848 int i; 2459 int i;
1849 2460
1850 for (i = HEAP0; i < N + HEAP0; ++i) 2461 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1855 2466
1856 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2467 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1857 } 2468 }
1858} 2469}
1859 2470
1860static void noinline 2471static void noinline ecb_cold
1861array_verify (EV_P_ W *ws, int cnt) 2472array_verify (EV_P_ W *ws, int cnt)
1862{ 2473{
1863 while (cnt--) 2474 while (cnt--)
1864 { 2475 {
1865 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2476 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
1867 } 2478 }
1868} 2479}
1869#endif 2480#endif
1870 2481
1871#if EV_FEATURE_API 2482#if EV_FEATURE_API
1872void 2483void ecb_cold
1873ev_verify (EV_P) 2484ev_verify (EV_P)
1874{ 2485{
1875#if EV_VERIFY 2486#if EV_VERIFY
1876 int i; 2487 int i;
1877 WL w; 2488 WL w;
… …
1912#if EV_FORK_ENABLE 2523#if EV_FORK_ENABLE
1913 assert (forkmax >= forkcnt); 2524 assert (forkmax >= forkcnt);
1914 array_verify (EV_A_ (W *)forks, forkcnt); 2525 array_verify (EV_A_ (W *)forks, forkcnt);
1915#endif 2526#endif
1916 2527
2528#if EV_CLEANUP_ENABLE
2529 assert (cleanupmax >= cleanupcnt);
2530 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2531#endif
2532
1917#if EV_ASYNC_ENABLE 2533#if EV_ASYNC_ENABLE
1918 assert (asyncmax >= asynccnt); 2534 assert (asyncmax >= asynccnt);
1919 array_verify (EV_A_ (W *)asyncs, asynccnt); 2535 array_verify (EV_A_ (W *)asyncs, asynccnt);
1920#endif 2536#endif
1921 2537
… …
1938#endif 2554#endif
1939} 2555}
1940#endif 2556#endif
1941 2557
1942#if EV_MULTIPLICITY 2558#if EV_MULTIPLICITY
1943struct ev_loop * 2559struct ev_loop * ecb_cold
1944ev_default_loop_init (unsigned int flags)
1945#else 2560#else
1946int 2561int
2562#endif
1947ev_default_loop (unsigned int flags) 2563ev_default_loop (unsigned int flags)
1948#endif
1949{ 2564{
1950 if (!ev_default_loop_ptr) 2565 if (!ev_default_loop_ptr)
1951 { 2566 {
1952#if EV_MULTIPLICITY 2567#if EV_MULTIPLICITY
1953 EV_P = ev_default_loop_ptr = &default_loop_struct; 2568 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
1972 2587
1973 return ev_default_loop_ptr; 2588 return ev_default_loop_ptr;
1974} 2589}
1975 2590
1976void 2591void
1977ev_default_destroy (void) 2592ev_loop_fork (EV_P)
1978{ 2593{
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 */ 2594 postfork = 1; /* must be in line with ev_default_fork */
2001} 2595}
2002 2596
2003/*****************************************************************************/ 2597/*****************************************************************************/
2004 2598
2005void 2599void
… …
2027 2621
2028 for (pri = NUMPRI; pri--; ) 2622 for (pri = NUMPRI; pri--; )
2029 while (pendingcnt [pri]) 2623 while (pendingcnt [pri])
2030 { 2624 {
2031 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2625 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 2626
2036 p->w->pending = 0; 2627 p->w->pending = 0;
2037 EV_CB_INVOKE (p->w, p->events); 2628 EV_CB_INVOKE (p->w, p->events);
2038 EV_FREQUENT_CHECK; 2629 EV_FREQUENT_CHECK;
2039 } 2630 }
… …
2101 feed_reverse_done (EV_A_ EV_TIMER); 2692 feed_reverse_done (EV_A_ EV_TIMER);
2102 } 2693 }
2103} 2694}
2104 2695
2105#if EV_PERIODIC_ENABLE 2696#if EV_PERIODIC_ENABLE
2697
2698static void noinline
2699periodic_recalc (EV_P_ ev_periodic *w)
2700{
2701 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2702 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2703
2704 /* the above almost always errs on the low side */
2705 while (at <= ev_rt_now)
2706 {
2707 ev_tstamp nat = at + w->interval;
2708
2709 /* when resolution fails us, we use ev_rt_now */
2710 if (expect_false (nat == at))
2711 {
2712 at = ev_rt_now;
2713 break;
2714 }
2715
2716 at = nat;
2717 }
2718
2719 ev_at (w) = at;
2720}
2721
2106/* make periodics pending */ 2722/* make periodics pending */
2107inline_size void 2723inline_size void
2108periodics_reify (EV_P) 2724periodics_reify (EV_P)
2109{ 2725{
2110 EV_FREQUENT_CHECK; 2726 EV_FREQUENT_CHECK;
… …
2129 ANHE_at_cache (periodics [HEAP0]); 2745 ANHE_at_cache (periodics [HEAP0]);
2130 downheap (periodics, periodiccnt, HEAP0); 2746 downheap (periodics, periodiccnt, HEAP0);
2131 } 2747 }
2132 else if (w->interval) 2748 else if (w->interval)
2133 { 2749 {
2134 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2750 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]); 2751 ANHE_at_cache (periodics [HEAP0]);
2149 downheap (periodics, periodiccnt, HEAP0); 2752 downheap (periodics, periodiccnt, HEAP0);
2150 } 2753 }
2151 else 2754 else
2152 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 2755 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
2159 feed_reverse_done (EV_A_ EV_PERIODIC); 2762 feed_reverse_done (EV_A_ EV_PERIODIC);
2160 } 2763 }
2161} 2764}
2162 2765
2163/* simply recalculate all periodics */ 2766/* simply recalculate all periodics */
2164/* TODO: maybe ensure that at leats one event happens when jumping forward? */ 2767/* TODO: maybe ensure that at least one event happens when jumping forward? */
2165static void noinline 2768static void noinline ecb_cold
2166periodics_reschedule (EV_P) 2769periodics_reschedule (EV_P)
2167{ 2770{
2168 int i; 2771 int i;
2169 2772
2170 /* adjust periodics after time jump */ 2773 /* adjust periodics after time jump */
… …
2173 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 2776 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2174 2777
2175 if (w->reschedule_cb) 2778 if (w->reschedule_cb)
2176 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2779 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2177 else if (w->interval) 2780 else if (w->interval)
2178 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2781 periodic_recalc (EV_A_ w);
2179 2782
2180 ANHE_at_cache (periodics [i]); 2783 ANHE_at_cache (periodics [i]);
2181 } 2784 }
2182 2785
2183 reheap (periodics, periodiccnt); 2786 reheap (periodics, periodiccnt);
2184} 2787}
2185#endif 2788#endif
2186 2789
2187/* adjust all timers by a given offset */ 2790/* adjust all timers by a given offset */
2188static void noinline 2791static void noinline ecb_cold
2189timers_reschedule (EV_P_ ev_tstamp adjust) 2792timers_reschedule (EV_P_ ev_tstamp adjust)
2190{ 2793{
2191 int i; 2794 int i;
2192 2795
2193 for (i = 0; i < timercnt; ++i) 2796 for (i = 0; i < timercnt; ++i)
… …
2230 * doesn't hurt either as we only do this on time-jumps or 2833 * doesn't hurt either as we only do this on time-jumps or
2231 * in the unlikely event of having been preempted here. 2834 * in the unlikely event of having been preempted here.
2232 */ 2835 */
2233 for (i = 4; --i; ) 2836 for (i = 4; --i; )
2234 { 2837 {
2838 ev_tstamp diff;
2235 rtmn_diff = ev_rt_now - mn_now; 2839 rtmn_diff = ev_rt_now - mn_now;
2236 2840
2841 diff = odiff - rtmn_diff;
2842
2237 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 2843 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2238 return; /* all is well */ 2844 return; /* all is well */
2239 2845
2240 ev_rt_now = ev_time (); 2846 ev_rt_now = ev_time ();
2241 mn_now = get_clock (); 2847 mn_now = get_clock ();
2242 now_floor = mn_now; 2848 now_floor = mn_now;
… …
2265 mn_now = ev_rt_now; 2871 mn_now = ev_rt_now;
2266 } 2872 }
2267} 2873}
2268 2874
2269void 2875void
2270ev_loop (EV_P_ int flags) 2876ev_run (EV_P_ int flags)
2271{ 2877{
2272#if EV_FEATURE_API 2878#if EV_FEATURE_API
2273 ++loop_depth; 2879 ++loop_depth;
2274#endif 2880#endif
2275 2881
2276 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE)); 2882 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2277 2883
2278 loop_done = EVUNLOOP_CANCEL; 2884 loop_done = EVBREAK_CANCEL;
2279 2885
2280 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ 2886 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2281 2887
2282 do 2888 do
2283 { 2889 {
… …
2326 /* calculate blocking time */ 2932 /* calculate blocking time */
2327 { 2933 {
2328 ev_tstamp waittime = 0.; 2934 ev_tstamp waittime = 0.;
2329 ev_tstamp sleeptime = 0.; 2935 ev_tstamp sleeptime = 0.;
2330 2936
2937 /* remember old timestamp for io_blocktime calculation */
2938 ev_tstamp prev_mn_now = mn_now;
2939
2940 /* update time to cancel out callback processing overhead */
2941 time_update (EV_A_ 1e100);
2942
2943 /* from now on, we want a pipe-wake-up */
2944 pipe_write_wanted = 1;
2945
2946 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
2947
2331 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2948 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2332 { 2949 {
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; 2950 waittime = MAX_BLOCKTIME;
2340 2951
2341 if (timercnt) 2952 if (timercnt)
2342 { 2953 {
2343 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 2954 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2344 if (waittime > to) waittime = to; 2955 if (waittime > to) waittime = to;
2345 } 2956 }
2346 2957
2347#if EV_PERIODIC_ENABLE 2958#if EV_PERIODIC_ENABLE
2348 if (periodiccnt) 2959 if (periodiccnt)
2349 { 2960 {
2350 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 2961 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2351 if (waittime > to) waittime = to; 2962 if (waittime > to) waittime = to;
2352 } 2963 }
2353#endif 2964#endif
2354 2965
2355 /* don't let timeouts decrease the waittime below timeout_blocktime */ 2966 /* don't let timeouts decrease the waittime below timeout_blocktime */
2356 if (expect_false (waittime < timeout_blocktime)) 2967 if (expect_false (waittime < timeout_blocktime))
2357 waittime = timeout_blocktime; 2968 waittime = timeout_blocktime;
2969
2970 /* at this point, we NEED to wait, so we have to ensure */
2971 /* to pass a minimum nonzero value to the backend */
2972 if (expect_false (waittime < backend_mintime))
2973 waittime = backend_mintime;
2358 2974
2359 /* extra check because io_blocktime is commonly 0 */ 2975 /* extra check because io_blocktime is commonly 0 */
2360 if (expect_false (io_blocktime)) 2976 if (expect_false (io_blocktime))
2361 { 2977 {
2362 sleeptime = io_blocktime - (mn_now - prev_mn_now); 2978 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2363 2979
2364 if (sleeptime > waittime - backend_fudge) 2980 if (sleeptime > waittime - backend_mintime)
2365 sleeptime = waittime - backend_fudge; 2981 sleeptime = waittime - backend_mintime;
2366 2982
2367 if (expect_true (sleeptime > 0.)) 2983 if (expect_true (sleeptime > 0.))
2368 { 2984 {
2369 ev_sleep (sleeptime); 2985 ev_sleep (sleeptime);
2370 waittime -= sleeptime; 2986 waittime -= sleeptime;
… …
2373 } 2989 }
2374 2990
2375#if EV_FEATURE_API 2991#if EV_FEATURE_API
2376 ++loop_count; 2992 ++loop_count;
2377#endif 2993#endif
2378 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ 2994 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2379 backend_poll (EV_A_ waittime); 2995 backend_poll (EV_A_ waittime);
2380 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */ 2996 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2997
2998 pipe_write_wanted = 0; /* just an optimsiation, no fence needed */
2999
3000 if (pipe_write_skipped)
3001 {
3002 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3003 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3004 }
3005
2381 3006
2382 /* update ev_rt_now, do magic */ 3007 /* update ev_rt_now, do magic */
2383 time_update (EV_A_ waittime + sleeptime); 3008 time_update (EV_A_ waittime + sleeptime);
2384 } 3009 }
2385 3010
… …
2403 EV_INVOKE_PENDING; 3028 EV_INVOKE_PENDING;
2404 } 3029 }
2405 while (expect_true ( 3030 while (expect_true (
2406 activecnt 3031 activecnt
2407 && !loop_done 3032 && !loop_done
2408 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3033 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2409 )); 3034 ));
2410 3035
2411 if (loop_done == EVUNLOOP_ONE) 3036 if (loop_done == EVBREAK_ONE)
2412 loop_done = EVUNLOOP_CANCEL; 3037 loop_done = EVBREAK_CANCEL;
2413 3038
2414#if EV_FEATURE_API 3039#if EV_FEATURE_API
2415 --loop_depth; 3040 --loop_depth;
2416#endif 3041#endif
2417} 3042}
2418 3043
2419void 3044void
2420ev_unloop (EV_P_ int how) 3045ev_break (EV_P_ int how)
2421{ 3046{
2422 loop_done = how; 3047 loop_done = how;
2423} 3048}
2424 3049
2425void 3050void
… …
2573 EV_FREQUENT_CHECK; 3198 EV_FREQUENT_CHECK;
2574 3199
2575 wlist_del (&anfds[w->fd].head, (WL)w); 3200 wlist_del (&anfds[w->fd].head, (WL)w);
2576 ev_stop (EV_A_ (W)w); 3201 ev_stop (EV_A_ (W)w);
2577 3202
2578 fd_change (EV_A_ w->fd, 1); 3203 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2579 3204
2580 EV_FREQUENT_CHECK; 3205 EV_FREQUENT_CHECK;
2581} 3206}
2582 3207
2583void noinline 3208void noinline
… …
2675 if (w->reschedule_cb) 3300 if (w->reschedule_cb)
2676 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3301 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2677 else if (w->interval) 3302 else if (w->interval)
2678 { 3303 {
2679 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 3304 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 */ 3305 periodic_recalc (EV_A_ w);
2681 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2682 } 3306 }
2683 else 3307 else
2684 ev_at (w) = w->offset; 3308 ev_at (w) = w->offset;
2685 3309
2686 EV_FREQUENT_CHECK; 3310 EV_FREQUENT_CHECK;
… …
2807 sa.sa_handler = ev_sighandler; 3431 sa.sa_handler = ev_sighandler;
2808 sigfillset (&sa.sa_mask); 3432 sigfillset (&sa.sa_mask);
2809 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3433 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2810 sigaction (w->signum, &sa, 0); 3434 sigaction (w->signum, &sa, 0);
2811 3435
3436 if (origflags & EVFLAG_NOSIGMASK)
3437 {
2812 sigemptyset (&sa.sa_mask); 3438 sigemptyset (&sa.sa_mask);
2813 sigaddset (&sa.sa_mask, w->signum); 3439 sigaddset (&sa.sa_mask, w->signum);
2814 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); 3440 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3441 }
2815#endif 3442#endif
2816 } 3443 }
2817 3444
2818 EV_FREQUENT_CHECK; 3445 EV_FREQUENT_CHECK;
2819} 3446}
… …
2960 if (!pend || pend == path) 3587 if (!pend || pend == path)
2961 break; 3588 break;
2962 3589
2963 *pend = 0; 3590 *pend = 0;
2964 w->wd = inotify_add_watch (fs_fd, path, mask); 3591 w->wd = inotify_add_watch (fs_fd, path, mask);
2965 } 3592 }
2966 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3593 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2967 } 3594 }
2968 } 3595 }
2969 3596
2970 if (w->wd >= 0) 3597 if (w->wd >= 0)
… …
3037 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3664 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3038 ofs += sizeof (struct inotify_event) + ev->len; 3665 ofs += sizeof (struct inotify_event) + ev->len;
3039 } 3666 }
3040} 3667}
3041 3668
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 3669inline_size void ecb_cold
3075ev_check_2625 (EV_P) 3670ev_check_2625 (EV_P)
3076{ 3671{
3077 /* kernels < 2.6.25 are borked 3672 /* kernels < 2.6.25 are borked
3078 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 3673 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3079 */ 3674 */
… …
3400 3995
3401#if EV_EMBED_ENABLE 3996#if EV_EMBED_ENABLE
3402void noinline 3997void noinline
3403ev_embed_sweep (EV_P_ ev_embed *w) 3998ev_embed_sweep (EV_P_ ev_embed *w)
3404{ 3999{
3405 ev_loop (w->other, EVLOOP_NONBLOCK); 4000 ev_run (w->other, EVRUN_NOWAIT);
3406} 4001}
3407 4002
3408static void 4003static void
3409embed_io_cb (EV_P_ ev_io *io, int revents) 4004embed_io_cb (EV_P_ ev_io *io, int revents)
3410{ 4005{
3411 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4006 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3412 4007
3413 if (ev_cb (w)) 4008 if (ev_cb (w))
3414 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4009 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3415 else 4010 else
3416 ev_loop (w->other, EVLOOP_NONBLOCK); 4011 ev_run (w->other, EVRUN_NOWAIT);
3417} 4012}
3418 4013
3419static void 4014static void
3420embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4015embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3421{ 4016{
… …
3425 EV_P = w->other; 4020 EV_P = w->other;
3426 4021
3427 while (fdchangecnt) 4022 while (fdchangecnt)
3428 { 4023 {
3429 fd_reify (EV_A); 4024 fd_reify (EV_A);
3430 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4025 ev_run (EV_A_ EVRUN_NOWAIT);
3431 } 4026 }
3432 } 4027 }
3433} 4028}
3434 4029
3435static void 4030static void
… …
3441 4036
3442 { 4037 {
3443 EV_P = w->other; 4038 EV_P = w->other;
3444 4039
3445 ev_loop_fork (EV_A); 4040 ev_loop_fork (EV_A);
3446 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4041 ev_run (EV_A_ EVRUN_NOWAIT);
3447 } 4042 }
3448 4043
3449 ev_embed_start (EV_A_ w); 4044 ev_embed_start (EV_A_ w);
3450} 4045}
3451 4046
… …
3543 4138
3544 EV_FREQUENT_CHECK; 4139 EV_FREQUENT_CHECK;
3545} 4140}
3546#endif 4141#endif
3547 4142
4143#if EV_CLEANUP_ENABLE
4144void
4145ev_cleanup_start (EV_P_ ev_cleanup *w)
4146{
4147 if (expect_false (ev_is_active (w)))
4148 return;
4149
4150 EV_FREQUENT_CHECK;
4151
4152 ev_start (EV_A_ (W)w, ++cleanupcnt);
4153 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
4154 cleanups [cleanupcnt - 1] = w;
4155
4156 /* cleanup watchers should never keep a refcount on the loop */
4157 ev_unref (EV_A);
4158 EV_FREQUENT_CHECK;
4159}
4160
4161void
4162ev_cleanup_stop (EV_P_ ev_cleanup *w)
4163{
4164 clear_pending (EV_A_ (W)w);
4165 if (expect_false (!ev_is_active (w)))
4166 return;
4167
4168 EV_FREQUENT_CHECK;
4169 ev_ref (EV_A);
4170
4171 {
4172 int active = ev_active (w);
4173
4174 cleanups [active - 1] = cleanups [--cleanupcnt];
4175 ev_active (cleanups [active - 1]) = active;
4176 }
4177
4178 ev_stop (EV_A_ (W)w);
4179
4180 EV_FREQUENT_CHECK;
4181}
4182#endif
4183
3548#if EV_ASYNC_ENABLE 4184#if EV_ASYNC_ENABLE
3549void 4185void
3550ev_async_start (EV_P_ ev_async *w) 4186ev_async_start (EV_P_ ev_async *w)
3551{ 4187{
3552 if (expect_false (ev_is_active (w))) 4188 if (expect_false (ev_is_active (w)))
3553 return; 4189 return;
4190
4191 w->sent = 0;
3554 4192
3555 evpipe_init (EV_A); 4193 evpipe_init (EV_A);
3556 4194
3557 EV_FREQUENT_CHECK; 4195 EV_FREQUENT_CHECK;
3558 4196
… …
3661} 4299}
3662 4300
3663/*****************************************************************************/ 4301/*****************************************************************************/
3664 4302
3665#if EV_WALK_ENABLE 4303#if EV_WALK_ENABLE
3666void 4304void ecb_cold
3667ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 4305ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3668{ 4306{
3669 int i, j; 4307 int i, j;
3670 ev_watcher_list *wl, *wn; 4308 ev_watcher_list *wl, *wn;
3671 4309
… …
3715 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 4353 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3716#endif 4354#endif
3717 4355
3718#if EV_IDLE_ENABLE 4356#if EV_IDLE_ENABLE
3719 if (types & EV_IDLE) 4357 if (types & EV_IDLE)
3720 for (j = NUMPRI; i--; ) 4358 for (j = NUMPRI; j--; )
3721 for (i = idlecnt [j]; i--; ) 4359 for (i = idlecnt [j]; i--; )
3722 cb (EV_A_ EV_IDLE, idles [j][i]); 4360 cb (EV_A_ EV_IDLE, idles [j][i]);
3723#endif 4361#endif
3724 4362
3725#if EV_FORK_ENABLE 4363#if EV_FORK_ENABLE
… …
3778 4416
3779#if EV_MULTIPLICITY 4417#if EV_MULTIPLICITY
3780 #include "ev_wrap.h" 4418 #include "ev_wrap.h"
3781#endif 4419#endif
3782 4420
3783#ifdef __cplusplus 4421EV_CPP(})
3784}
3785#endif
3786 4422

Diff Legend

– Removed lines
+ Added lines
< Changed lines
> Changed lines