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Comparing libev/ev.c (file contents):
Revision 1.344 by root, Fri Jul 9 20:55:14 2010 UTC vs.
Revision 1.417 by root, Mon Apr 2 20:22:30 2012 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
… …
57# endif 59# endif
58# ifndef EV_USE_MONOTONIC 60# ifndef EV_USE_MONOTONIC
59# define EV_USE_MONOTONIC 1 61# define EV_USE_MONOTONIC 1
60# endif 62# endif
61# endif 63# endif
62# elif !defined(EV_USE_CLOCK_SYSCALL) 64# elif !defined EV_USE_CLOCK_SYSCALL
63# define EV_USE_CLOCK_SYSCALL 0 65# define EV_USE_CLOCK_SYSCALL 0
64# endif 66# endif
65 67
66# if HAVE_CLOCK_GETTIME 68# if HAVE_CLOCK_GETTIME
67# ifndef EV_USE_MONOTONIC 69# ifndef EV_USE_MONOTONIC
… …
160# define EV_USE_EVENTFD 0 162# define EV_USE_EVENTFD 0
161# endif 163# endif
162 164
163#endif 165#endif
164 166
165#include <math.h>
166#include <stdlib.h> 167#include <stdlib.h>
167#include <string.h> 168#include <string.h>
168#include <fcntl.h> 169#include <fcntl.h>
169#include <stddef.h> 170#include <stddef.h>
170 171
… …
180 181
181#ifdef EV_H 182#ifdef EV_H
182# include EV_H 183# include EV_H
183#else 184#else
184# include "ev.h" 185# include "ev.h"
186#endif
187
188#if EV_NO_THREADS
189# undef EV_NO_SMP
190# define EV_NO_SMP 1
191# undef ECB_NO_THREADS
192# define ECB_NO_THREADS 1
193#endif
194#if EV_NO_SMP
195# undef EV_NO_SMP
196# define ECB_NO_SMP 1
185#endif 197#endif
186 198
187#ifndef _WIN32 199#ifndef _WIN32
188# include <sys/time.h> 200# include <sys/time.h>
189# include <sys/wait.h> 201# include <sys/wait.h>
… …
207#define _DARWIN_UNLIMITED_SELECT 1 219#define _DARWIN_UNLIMITED_SELECT 1
208 220
209/* this block tries to deduce configuration from header-defined symbols and defaults */ 221/* this block tries to deduce configuration from header-defined symbols and defaults */
210 222
211/* try to deduce the maximum number of signals on this platform */ 223/* try to deduce the maximum number of signals on this platform */
212#if defined (EV_NSIG) 224#if defined EV_NSIG
213/* use what's provided */ 225/* use what's provided */
214#elif defined (NSIG) 226#elif defined NSIG
215# define EV_NSIG (NSIG) 227# define EV_NSIG (NSIG)
216#elif defined(_NSIG) 228#elif defined _NSIG
217# define EV_NSIG (_NSIG) 229# define EV_NSIG (_NSIG)
218#elif defined (SIGMAX) 230#elif defined SIGMAX
219# define EV_NSIG (SIGMAX+1) 231# define EV_NSIG (SIGMAX+1)
220#elif defined (SIG_MAX) 232#elif defined SIG_MAX
221# define EV_NSIG (SIG_MAX+1) 233# define EV_NSIG (SIG_MAX+1)
222#elif defined (_SIG_MAX) 234#elif defined _SIG_MAX
223# define EV_NSIG (_SIG_MAX+1) 235# define EV_NSIG (_SIG_MAX+1)
224#elif defined (MAXSIG) 236#elif defined MAXSIG
225# define EV_NSIG (MAXSIG+1) 237# define EV_NSIG (MAXSIG+1)
226#elif defined (MAX_SIG) 238#elif defined MAX_SIG
227# define EV_NSIG (MAX_SIG+1) 239# define EV_NSIG (MAX_SIG+1)
228#elif defined (SIGARRAYSIZE) 240#elif defined SIGARRAYSIZE
229# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */ 241# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
230#elif defined (_sys_nsig) 242#elif defined _sys_nsig
231# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ 243# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
232#else 244#else
233# error "unable to find value for NSIG, please report" 245# error "unable to find value for NSIG, please report"
234/* to make it compile regardless, just remove the above line, */ 246/* to make it compile regardless, just remove the above line, */
235/* but consider reporting it, too! :) */ 247/* but consider reporting it, too! :) */
236# define EV_NSIG 65 248# define EV_NSIG 65
237#endif 249#endif
238 250
251#ifndef EV_USE_FLOOR
252# define EV_USE_FLOOR 0
253#endif
254
239#ifndef EV_USE_CLOCK_SYSCALL 255#ifndef EV_USE_CLOCK_SYSCALL
240# if __linux && __GLIBC__ >= 2 256# if __linux && __GLIBC__ >= 2
241# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS 257# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
242# else 258# else
243# define EV_USE_CLOCK_SYSCALL 0 259# define EV_USE_CLOCK_SYSCALL 0
244# endif 260# endif
245#endif 261#endif
246 262
247#ifndef EV_USE_MONOTONIC 263#ifndef EV_USE_MONOTONIC
248# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 264# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
249# define EV_USE_MONOTONIC EV_FEATURE_OS 265# define EV_USE_MONOTONIC EV_FEATURE_OS
250# else 266# else
251# define EV_USE_MONOTONIC 0 267# define EV_USE_MONOTONIC 0
252# endif 268# endif
253#endif 269#endif
… …
378# undef EV_USE_INOTIFY 394# undef EV_USE_INOTIFY
379# define EV_USE_INOTIFY 0 395# define EV_USE_INOTIFY 0
380#endif 396#endif
381 397
382#if !EV_USE_NANOSLEEP 398#if !EV_USE_NANOSLEEP
383# ifndef _WIN32 399/* hp-ux has it in sys/time.h, which we unconditionally include above */
400# if !defined _WIN32 && !defined __hpux
384# include <sys/select.h> 401# include <sys/select.h>
385# endif 402# endif
386#endif 403#endif
387 404
388#if EV_USE_INOTIFY 405#if EV_USE_INOTIFY
389# include <sys/utsname.h>
390# include <sys/statfs.h> 406# include <sys/statfs.h>
391# include <sys/inotify.h> 407# include <sys/inotify.h>
392/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 408/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
393# ifndef IN_DONT_FOLLOW 409# ifndef IN_DONT_FOLLOW
394# undef EV_USE_INOTIFY 410# undef EV_USE_INOTIFY
… …
411# define EFD_CLOEXEC O_CLOEXEC 427# define EFD_CLOEXEC O_CLOEXEC
412# else 428# else
413# define EFD_CLOEXEC 02000000 429# define EFD_CLOEXEC 02000000
414# endif 430# endif
415# endif 431# endif
416# ifdef __cplusplus
417extern "C" {
418# endif
419int (eventfd) (unsigned int initval, int flags); 432EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
420# ifdef __cplusplus
421}
422# endif
423#endif 433#endif
424 434
425#if EV_USE_SIGNALFD 435#if EV_USE_SIGNALFD
426/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 436/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
427# include <stdint.h> 437# include <stdint.h>
… …
433# define SFD_CLOEXEC O_CLOEXEC 443# define SFD_CLOEXEC O_CLOEXEC
434# else 444# else
435# define SFD_CLOEXEC 02000000 445# define SFD_CLOEXEC 02000000
436# endif 446# endif
437# endif 447# endif
438# ifdef __cplusplus
439extern "C" {
440# endif
441int signalfd (int fd, const sigset_t *mask, int flags); 448EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
442 449
443struct signalfd_siginfo 450struct signalfd_siginfo
444{ 451{
445 uint32_t ssi_signo; 452 uint32_t ssi_signo;
446 char pad[128 - sizeof (uint32_t)]; 453 char pad[128 - sizeof (uint32_t)];
447}; 454};
448# ifdef __cplusplus
449}
450# endif 455#endif
451#endif
452
453 456
454/**/ 457/**/
455 458
456#if EV_VERIFY >= 3 459#if EV_VERIFY >= 3
457# define EV_FREQUENT_CHECK ev_verify (EV_A) 460# define EV_FREQUENT_CHECK ev_verify (EV_A)
458#else 461#else
459# define EV_FREQUENT_CHECK do { } while (0) 462# define EV_FREQUENT_CHECK do { } while (0)
460#endif 463#endif
461 464
462/* 465/*
463 * This is used to avoid floating point rounding problems. 466 * This is used to work around floating point rounding problems.
464 * It is added to ev_rt_now when scheduling periodics
465 * to ensure progress, time-wise, even when rounding
466 * errors are against us.
467 * This value is good at least till the year 4000. 467 * This value is good at least till the year 4000.
468 * Better solutions welcome.
469 */ 468 */
470#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 469#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
470/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
471 471
472#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 472#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
473#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 473#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
474 474
475#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
476#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
477
478/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
479/* ECB.H BEGIN */
480/*
481 * libecb - http://software.schmorp.de/pkg/libecb
482 *
483 * Copyright (©) 2009-2012 Marc Alexander Lehmann <libecb@schmorp.de>
484 * Copyright (©) 2011 Emanuele Giaquinta
485 * All rights reserved.
486 *
487 * Redistribution and use in source and binary forms, with or without modifica-
488 * tion, are permitted provided that the following conditions are met:
489 *
490 * 1. Redistributions of source code must retain the above copyright notice,
491 * this list of conditions and the following disclaimer.
492 *
493 * 2. Redistributions in binary form must reproduce the above copyright
494 * notice, this list of conditions and the following disclaimer in the
495 * documentation and/or other materials provided with the distribution.
496 *
497 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
498 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
499 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
500 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
501 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
502 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
503 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
504 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
505 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
506 * OF THE POSSIBILITY OF SUCH DAMAGE.
507 */
508
509#ifndef ECB_H
510#define ECB_H
511
512#ifdef _WIN32
513 typedef signed char int8_t;
514 typedef unsigned char uint8_t;
515 typedef signed short int16_t;
516 typedef unsigned short uint16_t;
517 typedef signed int int32_t;
518 typedef unsigned int uint32_t;
475#if __GNUC__ >= 4 519 #if __GNUC__
476# define expect(expr,value) __builtin_expect ((expr),(value)) 520 typedef signed long long int64_t;
477# define noinline __attribute__ ((noinline)) 521 typedef unsigned long long uint64_t;
522 #else /* _MSC_VER || __BORLANDC__ */
523 typedef signed __int64 int64_t;
524 typedef unsigned __int64 uint64_t;
525 #endif
478#else 526#else
479# define expect(expr,value) (expr) 527 #include <inttypes.h>
480# define noinline
481# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
482# define inline
483# endif 528#endif
529
530/* many compilers define _GNUC_ to some versions but then only implement
531 * what their idiot authors think are the "more important" extensions,
532 * causing enormous grief in return for some better fake benchmark numbers.
533 * or so.
534 * we try to detect these and simply assume they are not gcc - if they have
535 * an issue with that they should have done it right in the first place.
536 */
537#ifndef ECB_GCC_VERSION
538 #if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
539 #define ECB_GCC_VERSION(major,minor) 0
540 #else
541 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
484#endif 542 #endif
543#endif
485 544
545/*****************************************************************************/
546
547/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
548/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
549
550#if ECB_NO_THREADS
551# define ECB_NO_SMP 1
552#endif
553
554#if ECB_NO_THREADS || ECB_NO_SMP
555 #define ECB_MEMORY_FENCE do { } while (0)
556#endif
557
558#ifndef ECB_MEMORY_FENCE
559 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
560 #if __i386 || __i386__
561 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
562 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE /* non-lock xchg might be enough */
563 #define ECB_MEMORY_FENCE_RELEASE do { } while (0) /* unlikely to change in future cpus */
564 #elif __amd64 || __amd64__ || __x86_64 || __x86_64__
565 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
566 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("lfence" : : : "memory")
567 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("sfence") /* play safe - not needed in any current cpu */
568 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
569 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
570 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
571 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__
572 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
573 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
574 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__
575 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
576 #elif __sparc || __sparc__
577 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad | " : : : "memory")
578 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
579 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
580 #elif defined __s390__ || defined __s390x__
581 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
582 #elif defined __mips__
583 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
584 #endif
585 #endif
586#endif
587
588#ifndef ECB_MEMORY_FENCE
589 #if ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
590 #define ECB_MEMORY_FENCE __sync_synchronize ()
591 /*#define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); }) */
592 /*#define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); }) */
593 #elif _MSC_VER >= 1400 /* VC++ 2005 */
594 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
595 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
596 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
597 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
598 #elif defined _WIN32
599 #include <WinNT.h>
600 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
601 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
602 #include <mbarrier.h>
603 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
604 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
605 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
606 #elif __xlC__
607 #define ECB_MEMORY_FENCE __sync ()
608 #endif
609#endif
610
611#ifndef ECB_MEMORY_FENCE
612 #if !ECB_AVOID_PTHREADS
613 /*
614 * if you get undefined symbol references to pthread_mutex_lock,
615 * or failure to find pthread.h, then you should implement
616 * the ECB_MEMORY_FENCE operations for your cpu/compiler
617 * OR provide pthread.h and link against the posix thread library
618 * of your system.
619 */
620 #include <pthread.h>
621 #define ECB_NEEDS_PTHREADS 1
622 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
623
624 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
625 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
626 #endif
627#endif
628
629#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
630 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
631#endif
632
633#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
634 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
635#endif
636
637/*****************************************************************************/
638
639#define ECB_C99 (__STDC_VERSION__ >= 199901L)
640
641#if __cplusplus
642 #define ecb_inline static inline
643#elif ECB_GCC_VERSION(2,5)
644 #define ecb_inline static __inline__
645#elif ECB_C99
646 #define ecb_inline static inline
647#else
648 #define ecb_inline static
649#endif
650
651#if ECB_GCC_VERSION(3,3)
652 #define ecb_restrict __restrict__
653#elif ECB_C99
654 #define ecb_restrict restrict
655#else
656 #define ecb_restrict
657#endif
658
659typedef int ecb_bool;
660
661#define ECB_CONCAT_(a, b) a ## b
662#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
663#define ECB_STRINGIFY_(a) # a
664#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
665
666#define ecb_function_ ecb_inline
667
668#if ECB_GCC_VERSION(3,1)
669 #define ecb_attribute(attrlist) __attribute__(attrlist)
670 #define ecb_is_constant(expr) __builtin_constant_p (expr)
671 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
672 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
673#else
674 #define ecb_attribute(attrlist)
675 #define ecb_is_constant(expr) 0
676 #define ecb_expect(expr,value) (expr)
677 #define ecb_prefetch(addr,rw,locality)
678#endif
679
680/* no emulation for ecb_decltype */
681#if ECB_GCC_VERSION(4,5)
682 #define ecb_decltype(x) __decltype(x)
683#elif ECB_GCC_VERSION(3,0)
684 #define ecb_decltype(x) __typeof(x)
685#endif
686
687#define ecb_noinline ecb_attribute ((__noinline__))
688#define ecb_noreturn ecb_attribute ((__noreturn__))
689#define ecb_unused ecb_attribute ((__unused__))
690#define ecb_const ecb_attribute ((__const__))
691#define ecb_pure ecb_attribute ((__pure__))
692
693#if ECB_GCC_VERSION(4,3)
694 #define ecb_artificial ecb_attribute ((__artificial__))
695 #define ecb_hot ecb_attribute ((__hot__))
696 #define ecb_cold ecb_attribute ((__cold__))
697#else
698 #define ecb_artificial
699 #define ecb_hot
700 #define ecb_cold
701#endif
702
703/* put around conditional expressions if you are very sure that the */
704/* expression is mostly true or mostly false. note that these return */
705/* booleans, not the expression. */
486#define expect_false(expr) expect ((expr) != 0, 0) 706#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
487#define expect_true(expr) expect ((expr) != 0, 1) 707#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
708/* for compatibility to the rest of the world */
709#define ecb_likely(expr) ecb_expect_true (expr)
710#define ecb_unlikely(expr) ecb_expect_false (expr)
711
712/* count trailing zero bits and count # of one bits */
713#if ECB_GCC_VERSION(3,4)
714 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
715 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
716 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
717 #define ecb_ctz32(x) __builtin_ctz (x)
718 #define ecb_ctz64(x) __builtin_ctzll (x)
719 #define ecb_popcount32(x) __builtin_popcount (x)
720 /* no popcountll */
721#else
722 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const;
723 ecb_function_ int
724 ecb_ctz32 (uint32_t x)
725 {
726 int r = 0;
727
728 x &= ~x + 1; /* this isolates the lowest bit */
729
730#if ECB_branchless_on_i386
731 r += !!(x & 0xaaaaaaaa) << 0;
732 r += !!(x & 0xcccccccc) << 1;
733 r += !!(x & 0xf0f0f0f0) << 2;
734 r += !!(x & 0xff00ff00) << 3;
735 r += !!(x & 0xffff0000) << 4;
736#else
737 if (x & 0xaaaaaaaa) r += 1;
738 if (x & 0xcccccccc) r += 2;
739 if (x & 0xf0f0f0f0) r += 4;
740 if (x & 0xff00ff00) r += 8;
741 if (x & 0xffff0000) r += 16;
742#endif
743
744 return r;
745 }
746
747 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const;
748 ecb_function_ int
749 ecb_ctz64 (uint64_t x)
750 {
751 int shift = x & 0xffffffffU ? 0 : 32;
752 return ecb_ctz32 (x >> shift) + shift;
753 }
754
755 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const;
756 ecb_function_ int
757 ecb_popcount32 (uint32_t x)
758 {
759 x -= (x >> 1) & 0x55555555;
760 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
761 x = ((x >> 4) + x) & 0x0f0f0f0f;
762 x *= 0x01010101;
763
764 return x >> 24;
765 }
766
767 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const;
768 ecb_function_ int ecb_ld32 (uint32_t x)
769 {
770 int r = 0;
771
772 if (x >> 16) { x >>= 16; r += 16; }
773 if (x >> 8) { x >>= 8; r += 8; }
774 if (x >> 4) { x >>= 4; r += 4; }
775 if (x >> 2) { x >>= 2; r += 2; }
776 if (x >> 1) { r += 1; }
777
778 return r;
779 }
780
781 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const;
782 ecb_function_ int ecb_ld64 (uint64_t x)
783 {
784 int r = 0;
785
786 if (x >> 32) { x >>= 32; r += 32; }
787
788 return r + ecb_ld32 (x);
789 }
790#endif
791
792ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const;
793ecb_function_ uint8_t ecb_bitrev8 (uint8_t x)
794{
795 return ( (x * 0x0802U & 0x22110U)
796 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
797}
798
799ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const;
800ecb_function_ uint16_t ecb_bitrev16 (uint16_t x)
801{
802 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
803 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
804 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
805 x = ( x >> 8 ) | ( x << 8);
806
807 return x;
808}
809
810ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const;
811ecb_function_ uint32_t ecb_bitrev32 (uint32_t x)
812{
813 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
814 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
815 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
816 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
817 x = ( x >> 16 ) | ( x << 16);
818
819 return x;
820}
821
822/* popcount64 is only available on 64 bit cpus as gcc builtin */
823/* so for this version we are lazy */
824ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const;
825ecb_function_ int
826ecb_popcount64 (uint64_t x)
827{
828 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
829}
830
831ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const;
832ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const;
833ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const;
834ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const;
835ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const;
836ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const;
837ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const;
838ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const;
839
840ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
841ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
842ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
843ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
844ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
845ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
846ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
847ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
848
849#if ECB_GCC_VERSION(4,3)
850 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
851 #define ecb_bswap32(x) __builtin_bswap32 (x)
852 #define ecb_bswap64(x) __builtin_bswap64 (x)
853#else
854 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const;
855 ecb_function_ uint16_t
856 ecb_bswap16 (uint16_t x)
857 {
858 return ecb_rotl16 (x, 8);
859 }
860
861 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const;
862 ecb_function_ uint32_t
863 ecb_bswap32 (uint32_t x)
864 {
865 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
866 }
867
868 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const;
869 ecb_function_ uint64_t
870 ecb_bswap64 (uint64_t x)
871 {
872 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
873 }
874#endif
875
876#if ECB_GCC_VERSION(4,5)
877 #define ecb_unreachable() __builtin_unreachable ()
878#else
879 /* this seems to work fine, but gcc always emits a warning for it :/ */
880 ecb_inline void ecb_unreachable (void) ecb_noreturn;
881 ecb_inline void ecb_unreachable (void) { }
882#endif
883
884/* try to tell the compiler that some condition is definitely true */
885#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0)
886
887ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const;
888ecb_inline unsigned char
889ecb_byteorder_helper (void)
890{
891 const uint32_t u = 0x11223344;
892 return *(unsigned char *)&u;
893}
894
895ecb_inline ecb_bool ecb_big_endian (void) ecb_const;
896ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
897ecb_inline ecb_bool ecb_little_endian (void) ecb_const;
898ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }
899
900#if ECB_GCC_VERSION(3,0) || ECB_C99
901 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
902#else
903 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
904#endif
905
906#if __cplusplus
907 template<typename T>
908 static inline T ecb_div_rd (T val, T div)
909 {
910 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
911 }
912 template<typename T>
913 static inline T ecb_div_ru (T val, T div)
914 {
915 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
916 }
917#else
918 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
919 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
920#endif
921
922#if ecb_cplusplus_does_not_suck
923 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
924 template<typename T, int N>
925 static inline int ecb_array_length (const T (&arr)[N])
926 {
927 return N;
928 }
929#else
930 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
931#endif
932
933#endif
934
935/* ECB.H END */
936
937#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
938/* if your architecture doesn't need memory fences, e.g. because it is
939 * single-cpu/core, or if you use libev in a project that doesn't use libev
940 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
941 * libev, in which cases the memory fences become nops.
942 * alternatively, you can remove this #error and link against libpthread,
943 * which will then provide the memory fences.
944 */
945# error "memory fences not defined for your architecture, please report"
946#endif
947
948#ifndef ECB_MEMORY_FENCE
949# define ECB_MEMORY_FENCE do { } while (0)
950# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
951# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
952#endif
953
954#define expect_false(cond) ecb_expect_false (cond)
955#define expect_true(cond) ecb_expect_true (cond)
956#define noinline ecb_noinline
957
488#define inline_size static inline 958#define inline_size ecb_inline
489 959
490#if EV_FEATURE_CODE 960#if EV_FEATURE_CODE
491# define inline_speed static inline 961# define inline_speed ecb_inline
492#else 962#else
493# define inline_speed static noinline 963# define inline_speed static noinline
494#endif 964#endif
495 965
496#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 966#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
… …
511#define ev_active(w) ((W)(w))->active 981#define ev_active(w) ((W)(w))->active
512#define ev_at(w) ((WT)(w))->at 982#define ev_at(w) ((WT)(w))->at
513 983
514#if EV_USE_REALTIME 984#if EV_USE_REALTIME
515/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 985/* sig_atomic_t is used to avoid per-thread variables or locking but still */
516/* giving it a reasonably high chance of working on typical architetcures */ 986/* giving it a reasonably high chance of working on typical architectures */
517static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 987static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
518#endif 988#endif
519 989
520#if EV_USE_MONOTONIC 990#if EV_USE_MONOTONIC
521static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 991static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
… …
535# include "ev_win32.c" 1005# include "ev_win32.c"
536#endif 1006#endif
537 1007
538/*****************************************************************************/ 1008/*****************************************************************************/
539 1009
1010/* define a suitable floor function (only used by periodics atm) */
1011
1012#if EV_USE_FLOOR
1013# include <math.h>
1014# define ev_floor(v) floor (v)
1015#else
1016
1017#include <float.h>
1018
1019/* a floor() replacement function, should be independent of ev_tstamp type */
1020static ev_tstamp noinline
1021ev_floor (ev_tstamp v)
1022{
1023 /* the choice of shift factor is not terribly important */
1024#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1025 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1026#else
1027 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1028#endif
1029
1030 /* argument too large for an unsigned long? */
1031 if (expect_false (v >= shift))
1032 {
1033 ev_tstamp f;
1034
1035 if (v == v - 1.)
1036 return v; /* very large number */
1037
1038 f = shift * ev_floor (v * (1. / shift));
1039 return f + ev_floor (v - f);
1040 }
1041
1042 /* special treatment for negative args? */
1043 if (expect_false (v < 0.))
1044 {
1045 ev_tstamp f = -ev_floor (-v);
1046
1047 return f - (f == v ? 0 : 1);
1048 }
1049
1050 /* fits into an unsigned long */
1051 return (unsigned long)v;
1052}
1053
1054#endif
1055
1056/*****************************************************************************/
1057
1058#ifdef __linux
1059# include <sys/utsname.h>
1060#endif
1061
1062static unsigned int noinline ecb_cold
1063ev_linux_version (void)
1064{
1065#ifdef __linux
1066 unsigned int v = 0;
1067 struct utsname buf;
1068 int i;
1069 char *p = buf.release;
1070
1071 if (uname (&buf))
1072 return 0;
1073
1074 for (i = 3+1; --i; )
1075 {
1076 unsigned int c = 0;
1077
1078 for (;;)
1079 {
1080 if (*p >= '0' && *p <= '9')
1081 c = c * 10 + *p++ - '0';
1082 else
1083 {
1084 p += *p == '.';
1085 break;
1086 }
1087 }
1088
1089 v = (v << 8) | c;
1090 }
1091
1092 return v;
1093#else
1094 return 0;
1095#endif
1096}
1097
1098/*****************************************************************************/
1099
540#if EV_AVOID_STDIO 1100#if EV_AVOID_STDIO
541static void noinline 1101static void noinline ecb_cold
542ev_printerr (const char *msg) 1102ev_printerr (const char *msg)
543{ 1103{
544 write (STDERR_FILENO, msg, strlen (msg)); 1104 write (STDERR_FILENO, msg, strlen (msg));
545} 1105}
546#endif 1106#endif
547 1107
548static void (*syserr_cb)(const char *msg); 1108static void (*syserr_cb)(const char *msg);
549 1109
550void 1110void ecb_cold
551ev_set_syserr_cb (void (*cb)(const char *msg)) 1111ev_set_syserr_cb (void (*cb)(const char *msg))
552{ 1112{
553 syserr_cb = cb; 1113 syserr_cb = cb;
554} 1114}
555 1115
556static void noinline 1116static void noinline ecb_cold
557ev_syserr (const char *msg) 1117ev_syserr (const char *msg)
558{ 1118{
559 if (!msg) 1119 if (!msg)
560 msg = "(libev) system error"; 1120 msg = "(libev) system error";
561 1121
562 if (syserr_cb) 1122 if (syserr_cb)
563 syserr_cb (msg); 1123 syserr_cb (msg);
564 else 1124 else
565 { 1125 {
566#if EV_AVOID_STDIO 1126#if EV_AVOID_STDIO
567 const char *err = strerror (errno);
568
569 ev_printerr (msg); 1127 ev_printerr (msg);
570 ev_printerr (": "); 1128 ev_printerr (": ");
571 ev_printerr (err); 1129 ev_printerr (strerror (errno));
572 ev_printerr ("\n"); 1130 ev_printerr ("\n");
573#else 1131#else
574 perror (msg); 1132 perror (msg);
575#endif 1133#endif
576 abort (); 1134 abort ();
… …
596#endif 1154#endif
597} 1155}
598 1156
599static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1157static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
600 1158
601void 1159void ecb_cold
602ev_set_allocator (void *(*cb)(void *ptr, long size)) 1160ev_set_allocator (void *(*cb)(void *ptr, long size))
603{ 1161{
604 alloc = cb; 1162 alloc = cb;
605} 1163}
606 1164
… …
610 ptr = alloc (ptr, size); 1168 ptr = alloc (ptr, size);
611 1169
612 if (!ptr && size) 1170 if (!ptr && size)
613 { 1171 {
614#if EV_AVOID_STDIO 1172#if EV_AVOID_STDIO
615 ev_printerr ("libev: memory allocation failed, aborting.\n"); 1173 ev_printerr ("(libev) memory allocation failed, aborting.\n");
616#else 1174#else
617 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1175 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
618#endif 1176#endif
619 abort (); 1177 abort ();
620 } 1178 }
621 1179
622 return ptr; 1180 return ptr;
… …
639 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1197 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
640 unsigned char unused; 1198 unsigned char unused;
641#if EV_USE_EPOLL 1199#if EV_USE_EPOLL
642 unsigned int egen; /* generation counter to counter epoll bugs */ 1200 unsigned int egen; /* generation counter to counter epoll bugs */
643#endif 1201#endif
644#if EV_SELECT_IS_WINSOCKET 1202#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
645 SOCKET handle; 1203 SOCKET handle;
1204#endif
1205#if EV_USE_IOCP
1206 OVERLAPPED or, ow;
646#endif 1207#endif
647} ANFD; 1208} ANFD;
648 1209
649/* stores the pending event set for a given watcher */ 1210/* stores the pending event set for a given watcher */
650typedef struct 1211typedef struct
… …
692 #undef VAR 1253 #undef VAR
693 }; 1254 };
694 #include "ev_wrap.h" 1255 #include "ev_wrap.h"
695 1256
696 static struct ev_loop default_loop_struct; 1257 static struct ev_loop default_loop_struct;
697 struct ev_loop *ev_default_loop_ptr; 1258 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
698 1259
699#else 1260#else
700 1261
701 ev_tstamp ev_rt_now; 1262 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */
702 #define VAR(name,decl) static decl; 1263 #define VAR(name,decl) static decl;
703 #include "ev_vars.h" 1264 #include "ev_vars.h"
704 #undef VAR 1265 #undef VAR
705 1266
706 static int ev_default_loop_ptr; 1267 static int ev_default_loop_ptr;
… …
715# define EV_RELEASE_CB (void)0 1276# define EV_RELEASE_CB (void)0
716# define EV_ACQUIRE_CB (void)0 1277# define EV_ACQUIRE_CB (void)0
717# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 1278# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
718#endif 1279#endif
719 1280
720#define EVUNLOOP_RECURSE 0x80 1281#define EVBREAK_RECURSE 0x80
721 1282
722/*****************************************************************************/ 1283/*****************************************************************************/
723 1284
724#ifndef EV_HAVE_EV_TIME 1285#ifndef EV_HAVE_EV_TIME
725ev_tstamp 1286ev_tstamp
… …
769 if (delay > 0.) 1330 if (delay > 0.)
770 { 1331 {
771#if EV_USE_NANOSLEEP 1332#if EV_USE_NANOSLEEP
772 struct timespec ts; 1333 struct timespec ts;
773 1334
774 ts.tv_sec = (time_t)delay; 1335 EV_TS_SET (ts, delay);
775 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
776
777 nanosleep (&ts, 0); 1336 nanosleep (&ts, 0);
778#elif defined(_WIN32) 1337#elif defined _WIN32
779 Sleep ((unsigned long)(delay * 1e3)); 1338 Sleep ((unsigned long)(delay * 1e3));
780#else 1339#else
781 struct timeval tv; 1340 struct timeval tv;
782 1341
783 tv.tv_sec = (time_t)delay;
784 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
785
786 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1342 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
787 /* something not guaranteed by newer posix versions, but guaranteed */ 1343 /* something not guaranteed by newer posix versions, but guaranteed */
788 /* by older ones */ 1344 /* by older ones */
1345 EV_TV_SET (tv, delay);
789 select (0, 0, 0, 0, &tv); 1346 select (0, 0, 0, 0, &tv);
790#endif 1347#endif
791 } 1348 }
792} 1349}
793 1350
794/*****************************************************************************/ 1351/*****************************************************************************/
795 1352
796#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 1353#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
797 1354
798/* find a suitable new size for the given array, */ 1355/* find a suitable new size for the given array, */
799/* hopefully by rounding to a ncie-to-malloc size */ 1356/* hopefully by rounding to a nice-to-malloc size */
800inline_size int 1357inline_size int
801array_nextsize (int elem, int cur, int cnt) 1358array_nextsize (int elem, int cur, int cnt)
802{ 1359{
803 int ncur = cur + 1; 1360 int ncur = cur + 1;
804 1361
805 do 1362 do
806 ncur <<= 1; 1363 ncur <<= 1;
807 while (cnt > ncur); 1364 while (cnt > ncur);
808 1365
809 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1366 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
810 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1367 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
811 { 1368 {
812 ncur *= elem; 1369 ncur *= elem;
813 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1370 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
814 ncur = ncur - sizeof (void *) * 4; 1371 ncur = ncur - sizeof (void *) * 4;
… …
816 } 1373 }
817 1374
818 return ncur; 1375 return ncur;
819} 1376}
820 1377
821static noinline void * 1378static void * noinline ecb_cold
822array_realloc (int elem, void *base, int *cur, int cnt) 1379array_realloc (int elem, void *base, int *cur, int cnt)
823{ 1380{
824 *cur = array_nextsize (elem, *cur, cnt); 1381 *cur = array_nextsize (elem, *cur, cnt);
825 return ev_realloc (base, elem * *cur); 1382 return ev_realloc (base, elem * *cur);
826} 1383}
… …
829 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1386 memset ((void *)(base), 0, sizeof (*(base)) * (count))
830 1387
831#define array_needsize(type,base,cur,cnt,init) \ 1388#define array_needsize(type,base,cur,cnt,init) \
832 if (expect_false ((cnt) > (cur))) \ 1389 if (expect_false ((cnt) > (cur))) \
833 { \ 1390 { \
834 int ocur_ = (cur); \ 1391 int ecb_unused ocur_ = (cur); \
835 (base) = (type *)array_realloc \ 1392 (base) = (type *)array_realloc \
836 (sizeof (type), (base), &(cur), (cnt)); \ 1393 (sizeof (type), (base), &(cur), (cnt)); \
837 init ((base) + (ocur_), (cur) - ocur_); \ 1394 init ((base) + (ocur_), (cur) - ocur_); \
838 } 1395 }
839 1396
… …
939inline_size void 1496inline_size void
940fd_reify (EV_P) 1497fd_reify (EV_P)
941{ 1498{
942 int i; 1499 int i;
943 1500
1501#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1502 for (i = 0; i < fdchangecnt; ++i)
1503 {
1504 int fd = fdchanges [i];
1505 ANFD *anfd = anfds + fd;
1506
1507 if (anfd->reify & EV__IOFDSET && anfd->head)
1508 {
1509 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1510
1511 if (handle != anfd->handle)
1512 {
1513 unsigned long arg;
1514
1515 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1516
1517 /* handle changed, but fd didn't - we need to do it in two steps */
1518 backend_modify (EV_A_ fd, anfd->events, 0);
1519 anfd->events = 0;
1520 anfd->handle = handle;
1521 }
1522 }
1523 }
1524#endif
1525
944 for (i = 0; i < fdchangecnt; ++i) 1526 for (i = 0; i < fdchangecnt; ++i)
945 { 1527 {
946 int fd = fdchanges [i]; 1528 int fd = fdchanges [i];
947 ANFD *anfd = anfds + fd; 1529 ANFD *anfd = anfds + fd;
948 ev_io *w; 1530 ev_io *w;
949 1531
950 unsigned char events = 0; 1532 unsigned char o_events = anfd->events;
1533 unsigned char o_reify = anfd->reify;
951 1534
952 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1535 anfd->reify = 0;
953 events |= (unsigned char)w->events;
954 1536
955#if EV_SELECT_IS_WINSOCKET 1537 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
956 if (events)
957 { 1538 {
958 unsigned long arg; 1539 anfd->events = 0;
959 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1540
960 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1541 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
1542 anfd->events |= (unsigned char)w->events;
1543
1544 if (o_events != anfd->events)
1545 o_reify = EV__IOFDSET; /* actually |= */
961 } 1546 }
962#endif
963 1547
964 { 1548 if (o_reify & EV__IOFDSET)
965 unsigned char o_events = anfd->events;
966 unsigned char o_reify = anfd->reify;
967
968 anfd->reify = 0;
969 anfd->events = events;
970
971 if (o_events != events || o_reify & EV__IOFDSET)
972 backend_modify (EV_A_ fd, o_events, events); 1549 backend_modify (EV_A_ fd, o_events, anfd->events);
973 }
974 } 1550 }
975 1551
976 fdchangecnt = 0; 1552 fdchangecnt = 0;
977} 1553}
978 1554
… …
990 fdchanges [fdchangecnt - 1] = fd; 1566 fdchanges [fdchangecnt - 1] = fd;
991 } 1567 }
992} 1568}
993 1569
994/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 1570/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
995inline_speed void 1571inline_speed void ecb_cold
996fd_kill (EV_P_ int fd) 1572fd_kill (EV_P_ int fd)
997{ 1573{
998 ev_io *w; 1574 ev_io *w;
999 1575
1000 while ((w = (ev_io *)anfds [fd].head)) 1576 while ((w = (ev_io *)anfds [fd].head))
… …
1003 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1579 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
1004 } 1580 }
1005} 1581}
1006 1582
1007/* check whether the given fd is actually valid, for error recovery */ 1583/* check whether the given fd is actually valid, for error recovery */
1008inline_size int 1584inline_size int ecb_cold
1009fd_valid (int fd) 1585fd_valid (int fd)
1010{ 1586{
1011#ifdef _WIN32 1587#ifdef _WIN32
1012 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 1588 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1013#else 1589#else
1014 return fcntl (fd, F_GETFD) != -1; 1590 return fcntl (fd, F_GETFD) != -1;
1015#endif 1591#endif
1016} 1592}
1017 1593
1018/* called on EBADF to verify fds */ 1594/* called on EBADF to verify fds */
1019static void noinline 1595static void noinline ecb_cold
1020fd_ebadf (EV_P) 1596fd_ebadf (EV_P)
1021{ 1597{
1022 int fd; 1598 int fd;
1023 1599
1024 for (fd = 0; fd < anfdmax; ++fd) 1600 for (fd = 0; fd < anfdmax; ++fd)
… …
1026 if (!fd_valid (fd) && errno == EBADF) 1602 if (!fd_valid (fd) && errno == EBADF)
1027 fd_kill (EV_A_ fd); 1603 fd_kill (EV_A_ fd);
1028} 1604}
1029 1605
1030/* called on ENOMEM in select/poll to kill some fds and retry */ 1606/* called on ENOMEM in select/poll to kill some fds and retry */
1031static void noinline 1607static void noinline ecb_cold
1032fd_enomem (EV_P) 1608fd_enomem (EV_P)
1033{ 1609{
1034 int fd; 1610 int fd;
1035 1611
1036 for (fd = anfdmax; fd--; ) 1612 for (fd = anfdmax; fd--; )
… …
1071} 1647}
1072 1648
1073/*****************************************************************************/ 1649/*****************************************************************************/
1074 1650
1075/* 1651/*
1076 * the heap functions want a real array index. array index 0 uis guaranteed to not 1652 * the heap functions want a real array index. array index 0 is guaranteed to not
1077 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 1653 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
1078 * the branching factor of the d-tree. 1654 * the branching factor of the d-tree.
1079 */ 1655 */
1080 1656
1081/* 1657/*
… …
1231 1807
1232/*****************************************************************************/ 1808/*****************************************************************************/
1233 1809
1234#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 1810#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1235 1811
1236static void noinline 1812static void noinline ecb_cold
1237evpipe_init (EV_P) 1813evpipe_init (EV_P)
1238{ 1814{
1239 if (!ev_is_active (&pipe_w)) 1815 if (!ev_is_active (&pipe_w))
1240 { 1816 {
1241# if EV_USE_EVENTFD 1817# if EV_USE_EVENTFD
… …
1263 ev_io_start (EV_A_ &pipe_w); 1839 ev_io_start (EV_A_ &pipe_w);
1264 ev_unref (EV_A); /* watcher should not keep loop alive */ 1840 ev_unref (EV_A); /* watcher should not keep loop alive */
1265 } 1841 }
1266} 1842}
1267 1843
1268inline_size void 1844inline_speed void
1269evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1845evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1270{ 1846{
1271 if (!*flag) 1847 if (expect_true (*flag))
1848 return;
1849
1850 *flag = 1;
1851
1852 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1853
1854 pipe_write_skipped = 1;
1855
1856 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1857
1858 if (pipe_write_wanted)
1272 { 1859 {
1860 int old_errno;
1861
1862 pipe_write_skipped = 0; /* just an optimisation, no fence needed */
1863
1273 int old_errno = errno; /* save errno because write might clobber it */ 1864 old_errno = errno; /* save errno because write will clobber it */
1274 char dummy;
1275
1276 *flag = 1;
1277 1865
1278#if EV_USE_EVENTFD 1866#if EV_USE_EVENTFD
1279 if (evfd >= 0) 1867 if (evfd >= 0)
1280 { 1868 {
1281 uint64_t counter = 1; 1869 uint64_t counter = 1;
1282 write (evfd, &counter, sizeof (uint64_t)); 1870 write (evfd, &counter, sizeof (uint64_t));
1283 } 1871 }
1284 else 1872 else
1285#endif 1873#endif
1874 {
1875 /* win32 people keep sending patches that change this write() to send() */
1876 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1877 /* so when you think this write should be a send instead, please find out */
1878 /* where your send() is from - it's definitely not the microsoft send, and */
1879 /* tell me. thank you. */
1880 /* it might be that your problem is that your environment needs EV_USE_WSASOCKET */
1881 /* check the ev documentation on how to use this flag */
1286 write (evpipe [1], &dummy, 1); 1882 write (evpipe [1], &(evpipe [1]), 1);
1883 }
1287 1884
1288 errno = old_errno; 1885 errno = old_errno;
1289 } 1886 }
1290} 1887}
1291 1888
… …
1294static void 1891static void
1295pipecb (EV_P_ ev_io *iow, int revents) 1892pipecb (EV_P_ ev_io *iow, int revents)
1296{ 1893{
1297 int i; 1894 int i;
1298 1895
1896 if (revents & EV_READ)
1897 {
1299#if EV_USE_EVENTFD 1898#if EV_USE_EVENTFD
1300 if (evfd >= 0) 1899 if (evfd >= 0)
1301 { 1900 {
1302 uint64_t counter; 1901 uint64_t counter;
1303 read (evfd, &counter, sizeof (uint64_t)); 1902 read (evfd, &counter, sizeof (uint64_t));
1304 } 1903 }
1305 else 1904 else
1306#endif 1905#endif
1307 { 1906 {
1308 char dummy; 1907 char dummy;
1908 /* see discussion in evpipe_write when you think this read should be recv in win32 */
1309 read (evpipe [0], &dummy, 1); 1909 read (evpipe [0], &dummy, 1);
1910 }
1310 } 1911 }
1311 1912
1913 pipe_write_skipped = 0;
1914
1915#if EV_SIGNAL_ENABLE
1312 if (sig_pending) 1916 if (sig_pending)
1313 { 1917 {
1314 sig_pending = 0; 1918 sig_pending = 0;
1315 1919
1316 for (i = EV_NSIG - 1; i--; ) 1920 for (i = EV_NSIG - 1; i--; )
1317 if (expect_false (signals [i].pending)) 1921 if (expect_false (signals [i].pending))
1318 ev_feed_signal_event (EV_A_ i + 1); 1922 ev_feed_signal_event (EV_A_ i + 1);
1319 } 1923 }
1924#endif
1320 1925
1321#if EV_ASYNC_ENABLE 1926#if EV_ASYNC_ENABLE
1322 if (async_pending) 1927 if (async_pending)
1323 { 1928 {
1324 async_pending = 0; 1929 async_pending = 0;
… …
1333#endif 1938#endif
1334} 1939}
1335 1940
1336/*****************************************************************************/ 1941/*****************************************************************************/
1337 1942
1943void
1944ev_feed_signal (int signum)
1945{
1946#if EV_MULTIPLICITY
1947 EV_P = signals [signum - 1].loop;
1948
1949 if (!EV_A)
1950 return;
1951#endif
1952
1953 if (!ev_active (&pipe_w))
1954 return;
1955
1956 signals [signum - 1].pending = 1;
1957 evpipe_write (EV_A_ &sig_pending);
1958}
1959
1338static void 1960static void
1339ev_sighandler (int signum) 1961ev_sighandler (int signum)
1340{ 1962{
1341#if EV_MULTIPLICITY
1342 EV_P = signals [signum - 1].loop;
1343#endif
1344
1345#ifdef _WIN32 1963#ifdef _WIN32
1346 signal (signum, ev_sighandler); 1964 signal (signum, ev_sighandler);
1347#endif 1965#endif
1348 1966
1349 signals [signum - 1].pending = 1; 1967 ev_feed_signal (signum);
1350 evpipe_write (EV_A_ &sig_pending);
1351} 1968}
1352 1969
1353void noinline 1970void noinline
1354ev_feed_signal_event (EV_P_ int signum) 1971ev_feed_signal_event (EV_P_ int signum)
1355{ 1972{
… …
1455 2072
1456#endif 2073#endif
1457 2074
1458/*****************************************************************************/ 2075/*****************************************************************************/
1459 2076
2077#if EV_USE_IOCP
2078# include "ev_iocp.c"
2079#endif
1460#if EV_USE_PORT 2080#if EV_USE_PORT
1461# include "ev_port.c" 2081# include "ev_port.c"
1462#endif 2082#endif
1463#if EV_USE_KQUEUE 2083#if EV_USE_KQUEUE
1464# include "ev_kqueue.c" 2084# include "ev_kqueue.c"
… …
1471#endif 2091#endif
1472#if EV_USE_SELECT 2092#if EV_USE_SELECT
1473# include "ev_select.c" 2093# include "ev_select.c"
1474#endif 2094#endif
1475 2095
1476int 2096int ecb_cold
1477ev_version_major (void) 2097ev_version_major (void)
1478{ 2098{
1479 return EV_VERSION_MAJOR; 2099 return EV_VERSION_MAJOR;
1480} 2100}
1481 2101
1482int 2102int ecb_cold
1483ev_version_minor (void) 2103ev_version_minor (void)
1484{ 2104{
1485 return EV_VERSION_MINOR; 2105 return EV_VERSION_MINOR;
1486} 2106}
1487 2107
1488/* return true if we are running with elevated privileges and should ignore env variables */ 2108/* return true if we are running with elevated privileges and should ignore env variables */
1489int inline_size 2109int inline_size ecb_cold
1490enable_secure (void) 2110enable_secure (void)
1491{ 2111{
1492#ifdef _WIN32 2112#ifdef _WIN32
1493 return 0; 2113 return 0;
1494#else 2114#else
1495 return getuid () != geteuid () 2115 return getuid () != geteuid ()
1496 || getgid () != getegid (); 2116 || getgid () != getegid ();
1497#endif 2117#endif
1498} 2118}
1499 2119
1500unsigned int 2120unsigned int ecb_cold
1501ev_supported_backends (void) 2121ev_supported_backends (void)
1502{ 2122{
1503 unsigned int flags = 0; 2123 unsigned int flags = 0;
1504 2124
1505 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2125 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
… …
1509 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2129 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1510 2130
1511 return flags; 2131 return flags;
1512} 2132}
1513 2133
1514unsigned int 2134unsigned int ecb_cold
1515ev_recommended_backends (void) 2135ev_recommended_backends (void)
1516{ 2136{
1517 unsigned int flags = ev_supported_backends (); 2137 unsigned int flags = ev_supported_backends ();
1518 2138
1519#ifndef __NetBSD__ 2139#ifndef __NetBSD__
… …
1531#endif 2151#endif
1532 2152
1533 return flags; 2153 return flags;
1534} 2154}
1535 2155
1536unsigned int 2156unsigned int ecb_cold
1537ev_embeddable_backends (void) 2157ev_embeddable_backends (void)
1538{ 2158{
1539 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2159 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1540 2160
1541 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2161 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1542 /* please fix it and tell me how to detect the fix */ 2162 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1543 flags &= ~EVBACKEND_EPOLL; 2163 flags &= ~EVBACKEND_EPOLL;
1544 2164
1545 return flags; 2165 return flags;
1546} 2166}
1547 2167
1548unsigned int 2168unsigned int
… …
1586ev_userdata (EV_P) 2206ev_userdata (EV_P)
1587{ 2207{
1588 return userdata; 2208 return userdata;
1589} 2209}
1590 2210
2211void
1591void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2212ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
1592{ 2213{
1593 invoke_cb = invoke_pending_cb; 2214 invoke_cb = invoke_pending_cb;
1594} 2215}
1595 2216
2217void
1596void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2218ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
1597{ 2219{
1598 release_cb = release; 2220 release_cb = release;
1599 acquire_cb = acquire; 2221 acquire_cb = acquire;
1600} 2222}
1601#endif 2223#endif
1602 2224
1603/* initialise a loop structure, must be zero-initialised */ 2225/* initialise a loop structure, must be zero-initialised */
1604static void noinline 2226static void noinline ecb_cold
1605loop_init (EV_P_ unsigned int flags) 2227loop_init (EV_P_ unsigned int flags)
1606{ 2228{
1607 if (!backend) 2229 if (!backend)
1608 { 2230 {
2231 origflags = flags;
2232
1609#if EV_USE_REALTIME 2233#if EV_USE_REALTIME
1610 if (!have_realtime) 2234 if (!have_realtime)
1611 { 2235 {
1612 struct timespec ts; 2236 struct timespec ts;
1613 2237
… …
1635 if (!(flags & EVFLAG_NOENV) 2259 if (!(flags & EVFLAG_NOENV)
1636 && !enable_secure () 2260 && !enable_secure ()
1637 && getenv ("LIBEV_FLAGS")) 2261 && getenv ("LIBEV_FLAGS"))
1638 flags = atoi (getenv ("LIBEV_FLAGS")); 2262 flags = atoi (getenv ("LIBEV_FLAGS"));
1639 2263
1640 ev_rt_now = ev_time (); 2264 ev_rt_now = ev_time ();
1641 mn_now = get_clock (); 2265 mn_now = get_clock ();
1642 now_floor = mn_now; 2266 now_floor = mn_now;
1643 rtmn_diff = ev_rt_now - mn_now; 2267 rtmn_diff = ev_rt_now - mn_now;
1644#if EV_FEATURE_API 2268#if EV_FEATURE_API
1645 invoke_cb = ev_invoke_pending; 2269 invoke_cb = ev_invoke_pending;
1646#endif 2270#endif
1647 2271
1648 io_blocktime = 0.; 2272 io_blocktime = 0.;
1649 timeout_blocktime = 0.; 2273 timeout_blocktime = 0.;
1650 backend = 0; 2274 backend = 0;
1651 backend_fd = -1; 2275 backend_fd = -1;
1652 sig_pending = 0; 2276 sig_pending = 0;
1653#if EV_ASYNC_ENABLE 2277#if EV_ASYNC_ENABLE
1654 async_pending = 0; 2278 async_pending = 0;
1655#endif 2279#endif
2280 pipe_write_skipped = 0;
2281 pipe_write_wanted = 0;
1656#if EV_USE_INOTIFY 2282#if EV_USE_INOTIFY
1657 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 2283 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1658#endif 2284#endif
1659#if EV_USE_SIGNALFD 2285#if EV_USE_SIGNALFD
1660 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 2286 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1661#endif 2287#endif
1662 2288
1663 if (!(flags & 0x0000ffffU)) 2289 if (!(flags & EVBACKEND_MASK))
1664 flags |= ev_recommended_backends (); 2290 flags |= ev_recommended_backends ();
1665 2291
2292#if EV_USE_IOCP
2293 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2294#endif
1666#if EV_USE_PORT 2295#if EV_USE_PORT
1667 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2296 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1668#endif 2297#endif
1669#if EV_USE_KQUEUE 2298#if EV_USE_KQUEUE
1670 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2299 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1687#endif 2316#endif
1688 } 2317 }
1689} 2318}
1690 2319
1691/* free up a loop structure */ 2320/* free up a loop structure */
1692static void noinline 2321void ecb_cold
1693loop_destroy (EV_P) 2322ev_loop_destroy (EV_P)
1694{ 2323{
1695 int i; 2324 int i;
2325
2326#if EV_MULTIPLICITY
2327 /* mimic free (0) */
2328 if (!EV_A)
2329 return;
2330#endif
2331
2332#if EV_CLEANUP_ENABLE
2333 /* queue cleanup watchers (and execute them) */
2334 if (expect_false (cleanupcnt))
2335 {
2336 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2337 EV_INVOKE_PENDING;
2338 }
2339#endif
2340
2341#if EV_CHILD_ENABLE
2342 if (ev_is_active (&childev))
2343 {
2344 ev_ref (EV_A); /* child watcher */
2345 ev_signal_stop (EV_A_ &childev);
2346 }
2347#endif
1696 2348
1697 if (ev_is_active (&pipe_w)) 2349 if (ev_is_active (&pipe_w))
1698 { 2350 {
1699 /*ev_ref (EV_A);*/ 2351 /*ev_ref (EV_A);*/
1700 /*ev_io_stop (EV_A_ &pipe_w);*/ 2352 /*ev_io_stop (EV_A_ &pipe_w);*/
… …
1722#endif 2374#endif
1723 2375
1724 if (backend_fd >= 0) 2376 if (backend_fd >= 0)
1725 close (backend_fd); 2377 close (backend_fd);
1726 2378
2379#if EV_USE_IOCP
2380 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2381#endif
1727#if EV_USE_PORT 2382#if EV_USE_PORT
1728 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 2383 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1729#endif 2384#endif
1730#if EV_USE_KQUEUE 2385#if EV_USE_KQUEUE
1731 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2386 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1758 array_free (periodic, EMPTY); 2413 array_free (periodic, EMPTY);
1759#endif 2414#endif
1760#if EV_FORK_ENABLE 2415#if EV_FORK_ENABLE
1761 array_free (fork, EMPTY); 2416 array_free (fork, EMPTY);
1762#endif 2417#endif
2418#if EV_CLEANUP_ENABLE
2419 array_free (cleanup, EMPTY);
2420#endif
1763 array_free (prepare, EMPTY); 2421 array_free (prepare, EMPTY);
1764 array_free (check, EMPTY); 2422 array_free (check, EMPTY);
1765#if EV_ASYNC_ENABLE 2423#if EV_ASYNC_ENABLE
1766 array_free (async, EMPTY); 2424 array_free (async, EMPTY);
1767#endif 2425#endif
1768 2426
1769 backend = 0; 2427 backend = 0;
2428
2429#if EV_MULTIPLICITY
2430 if (ev_is_default_loop (EV_A))
2431#endif
2432 ev_default_loop_ptr = 0;
2433#if EV_MULTIPLICITY
2434 else
2435 ev_free (EV_A);
2436#endif
1770} 2437}
1771 2438
1772#if EV_USE_INOTIFY 2439#if EV_USE_INOTIFY
1773inline_size void infy_fork (EV_P); 2440inline_size void infy_fork (EV_P);
1774#endif 2441#endif
… …
1789 infy_fork (EV_A); 2456 infy_fork (EV_A);
1790#endif 2457#endif
1791 2458
1792 if (ev_is_active (&pipe_w)) 2459 if (ev_is_active (&pipe_w))
1793 { 2460 {
1794 /* this "locks" the handlers against writing to the pipe */ 2461 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1795 /* while we modify the fd vars */
1796 sig_pending = 1;
1797#if EV_ASYNC_ENABLE
1798 async_pending = 1;
1799#endif
1800 2462
1801 ev_ref (EV_A); 2463 ev_ref (EV_A);
1802 ev_io_stop (EV_A_ &pipe_w); 2464 ev_io_stop (EV_A_ &pipe_w);
1803 2465
1804#if EV_USE_EVENTFD 2466#if EV_USE_EVENTFD
… …
1822 postfork = 0; 2484 postfork = 0;
1823} 2485}
1824 2486
1825#if EV_MULTIPLICITY 2487#if EV_MULTIPLICITY
1826 2488
1827struct ev_loop * 2489struct ev_loop * ecb_cold
1828ev_loop_new (unsigned int flags) 2490ev_loop_new (unsigned int flags)
1829{ 2491{
1830 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2492 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1831 2493
1832 memset (EV_A, 0, sizeof (struct ev_loop)); 2494 memset (EV_A, 0, sizeof (struct ev_loop));
1833 loop_init (EV_A_ flags); 2495 loop_init (EV_A_ flags);
1834 2496
1835 if (ev_backend (EV_A)) 2497 if (ev_backend (EV_A))
1836 return EV_A; 2498 return EV_A;
1837 2499
2500 ev_free (EV_A);
1838 return 0; 2501 return 0;
1839} 2502}
1840 2503
1841void
1842ev_loop_destroy (EV_P)
1843{
1844 loop_destroy (EV_A);
1845 ev_free (loop);
1846}
1847
1848void
1849ev_loop_fork (EV_P)
1850{
1851 postfork = 1; /* must be in line with ev_default_fork */
1852}
1853#endif /* multiplicity */ 2504#endif /* multiplicity */
1854 2505
1855#if EV_VERIFY 2506#if EV_VERIFY
1856static void noinline 2507static void noinline ecb_cold
1857verify_watcher (EV_P_ W w) 2508verify_watcher (EV_P_ W w)
1858{ 2509{
1859 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2510 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1860 2511
1861 if (w->pending) 2512 if (w->pending)
1862 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2513 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1863} 2514}
1864 2515
1865static void noinline 2516static void noinline ecb_cold
1866verify_heap (EV_P_ ANHE *heap, int N) 2517verify_heap (EV_P_ ANHE *heap, int N)
1867{ 2518{
1868 int i; 2519 int i;
1869 2520
1870 for (i = HEAP0; i < N + HEAP0; ++i) 2521 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1875 2526
1876 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2527 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1877 } 2528 }
1878} 2529}
1879 2530
1880static void noinline 2531static void noinline ecb_cold
1881array_verify (EV_P_ W *ws, int cnt) 2532array_verify (EV_P_ W *ws, int cnt)
1882{ 2533{
1883 while (cnt--) 2534 while (cnt--)
1884 { 2535 {
1885 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2536 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
1887 } 2538 }
1888} 2539}
1889#endif 2540#endif
1890 2541
1891#if EV_FEATURE_API 2542#if EV_FEATURE_API
1892void 2543void ecb_cold
1893ev_verify (EV_P) 2544ev_verify (EV_P)
1894{ 2545{
1895#if EV_VERIFY 2546#if EV_VERIFY
1896 int i; 2547 int i;
1897 WL w; 2548 WL w;
… …
1932#if EV_FORK_ENABLE 2583#if EV_FORK_ENABLE
1933 assert (forkmax >= forkcnt); 2584 assert (forkmax >= forkcnt);
1934 array_verify (EV_A_ (W *)forks, forkcnt); 2585 array_verify (EV_A_ (W *)forks, forkcnt);
1935#endif 2586#endif
1936 2587
2588#if EV_CLEANUP_ENABLE
2589 assert (cleanupmax >= cleanupcnt);
2590 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2591#endif
2592
1937#if EV_ASYNC_ENABLE 2593#if EV_ASYNC_ENABLE
1938 assert (asyncmax >= asynccnt); 2594 assert (asyncmax >= asynccnt);
1939 array_verify (EV_A_ (W *)asyncs, asynccnt); 2595 array_verify (EV_A_ (W *)asyncs, asynccnt);
1940#endif 2596#endif
1941 2597
… …
1958#endif 2614#endif
1959} 2615}
1960#endif 2616#endif
1961 2617
1962#if EV_MULTIPLICITY 2618#if EV_MULTIPLICITY
1963struct ev_loop * 2619struct ev_loop * ecb_cold
1964ev_default_loop_init (unsigned int flags)
1965#else 2620#else
1966int 2621int
2622#endif
1967ev_default_loop (unsigned int flags) 2623ev_default_loop (unsigned int flags)
1968#endif
1969{ 2624{
1970 if (!ev_default_loop_ptr) 2625 if (!ev_default_loop_ptr)
1971 { 2626 {
1972#if EV_MULTIPLICITY 2627#if EV_MULTIPLICITY
1973 EV_P = ev_default_loop_ptr = &default_loop_struct; 2628 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
1992 2647
1993 return ev_default_loop_ptr; 2648 return ev_default_loop_ptr;
1994} 2649}
1995 2650
1996void 2651void
1997ev_default_destroy (void) 2652ev_loop_fork (EV_P)
1998{ 2653{
1999#if EV_MULTIPLICITY
2000 EV_P = ev_default_loop_ptr;
2001#endif
2002
2003 ev_default_loop_ptr = 0;
2004
2005#if EV_CHILD_ENABLE
2006 ev_ref (EV_A); /* child watcher */
2007 ev_signal_stop (EV_A_ &childev);
2008#endif
2009
2010 loop_destroy (EV_A);
2011}
2012
2013void
2014ev_default_fork (void)
2015{
2016#if EV_MULTIPLICITY
2017 EV_P = ev_default_loop_ptr;
2018#endif
2019
2020 postfork = 1; /* must be in line with ev_loop_fork */ 2654 postfork = 1; /* must be in line with ev_default_fork */
2021} 2655}
2022 2656
2023/*****************************************************************************/ 2657/*****************************************************************************/
2024 2658
2025void 2659void
… …
2047 2681
2048 for (pri = NUMPRI; pri--; ) 2682 for (pri = NUMPRI; pri--; )
2049 while (pendingcnt [pri]) 2683 while (pendingcnt [pri])
2050 { 2684 {
2051 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2685 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
2052
2053 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
2054 /* ^ this is no longer true, as pending_w could be here */
2055 2686
2056 p->w->pending = 0; 2687 p->w->pending = 0;
2057 EV_CB_INVOKE (p->w, p->events); 2688 EV_CB_INVOKE (p->w, p->events);
2058 EV_FREQUENT_CHECK; 2689 EV_FREQUENT_CHECK;
2059 } 2690 }
… …
2121 feed_reverse_done (EV_A_ EV_TIMER); 2752 feed_reverse_done (EV_A_ EV_TIMER);
2122 } 2753 }
2123} 2754}
2124 2755
2125#if EV_PERIODIC_ENABLE 2756#if EV_PERIODIC_ENABLE
2757
2758static void noinline
2759periodic_recalc (EV_P_ ev_periodic *w)
2760{
2761 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2762 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2763
2764 /* the above almost always errs on the low side */
2765 while (at <= ev_rt_now)
2766 {
2767 ev_tstamp nat = at + w->interval;
2768
2769 /* when resolution fails us, we use ev_rt_now */
2770 if (expect_false (nat == at))
2771 {
2772 at = ev_rt_now;
2773 break;
2774 }
2775
2776 at = nat;
2777 }
2778
2779 ev_at (w) = at;
2780}
2781
2126/* make periodics pending */ 2782/* make periodics pending */
2127inline_size void 2783inline_size void
2128periodics_reify (EV_P) 2784periodics_reify (EV_P)
2129{ 2785{
2130 EV_FREQUENT_CHECK; 2786 EV_FREQUENT_CHECK;
… …
2149 ANHE_at_cache (periodics [HEAP0]); 2805 ANHE_at_cache (periodics [HEAP0]);
2150 downheap (periodics, periodiccnt, HEAP0); 2806 downheap (periodics, periodiccnt, HEAP0);
2151 } 2807 }
2152 else if (w->interval) 2808 else if (w->interval)
2153 { 2809 {
2154 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2810 periodic_recalc (EV_A_ w);
2155 /* if next trigger time is not sufficiently in the future, put it there */
2156 /* this might happen because of floating point inexactness */
2157 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2158 {
2159 ev_at (w) += w->interval;
2160
2161 /* if interval is unreasonably low we might still have a time in the past */
2162 /* so correct this. this will make the periodic very inexact, but the user */
2163 /* has effectively asked to get triggered more often than possible */
2164 if (ev_at (w) < ev_rt_now)
2165 ev_at (w) = ev_rt_now;
2166 }
2167
2168 ANHE_at_cache (periodics [HEAP0]); 2811 ANHE_at_cache (periodics [HEAP0]);
2169 downheap (periodics, periodiccnt, HEAP0); 2812 downheap (periodics, periodiccnt, HEAP0);
2170 } 2813 }
2171 else 2814 else
2172 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 2815 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
2179 feed_reverse_done (EV_A_ EV_PERIODIC); 2822 feed_reverse_done (EV_A_ EV_PERIODIC);
2180 } 2823 }
2181} 2824}
2182 2825
2183/* simply recalculate all periodics */ 2826/* simply recalculate all periodics */
2184/* TODO: maybe ensure that at leats one event happens when jumping forward? */ 2827/* TODO: maybe ensure that at least one event happens when jumping forward? */
2185static void noinline 2828static void noinline ecb_cold
2186periodics_reschedule (EV_P) 2829periodics_reschedule (EV_P)
2187{ 2830{
2188 int i; 2831 int i;
2189 2832
2190 /* adjust periodics after time jump */ 2833 /* adjust periodics after time jump */
… …
2193 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 2836 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2194 2837
2195 if (w->reschedule_cb) 2838 if (w->reschedule_cb)
2196 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2839 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2197 else if (w->interval) 2840 else if (w->interval)
2198 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2841 periodic_recalc (EV_A_ w);
2199 2842
2200 ANHE_at_cache (periodics [i]); 2843 ANHE_at_cache (periodics [i]);
2201 } 2844 }
2202 2845
2203 reheap (periodics, periodiccnt); 2846 reheap (periodics, periodiccnt);
2204} 2847}
2205#endif 2848#endif
2206 2849
2207/* adjust all timers by a given offset */ 2850/* adjust all timers by a given offset */
2208static void noinline 2851static void noinline ecb_cold
2209timers_reschedule (EV_P_ ev_tstamp adjust) 2852timers_reschedule (EV_P_ ev_tstamp adjust)
2210{ 2853{
2211 int i; 2854 int i;
2212 2855
2213 for (i = 0; i < timercnt; ++i) 2856 for (i = 0; i < timercnt; ++i)
… …
2250 * doesn't hurt either as we only do this on time-jumps or 2893 * doesn't hurt either as we only do this on time-jumps or
2251 * in the unlikely event of having been preempted here. 2894 * in the unlikely event of having been preempted here.
2252 */ 2895 */
2253 for (i = 4; --i; ) 2896 for (i = 4; --i; )
2254 { 2897 {
2898 ev_tstamp diff;
2255 rtmn_diff = ev_rt_now - mn_now; 2899 rtmn_diff = ev_rt_now - mn_now;
2256 2900
2901 diff = odiff - rtmn_diff;
2902
2257 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 2903 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2258 return; /* all is well */ 2904 return; /* all is well */
2259 2905
2260 ev_rt_now = ev_time (); 2906 ev_rt_now = ev_time ();
2261 mn_now = get_clock (); 2907 mn_now = get_clock ();
2262 now_floor = mn_now; 2908 now_floor = mn_now;
… …
2285 mn_now = ev_rt_now; 2931 mn_now = ev_rt_now;
2286 } 2932 }
2287} 2933}
2288 2934
2289void 2935void
2290ev_loop (EV_P_ int flags) 2936ev_run (EV_P_ int flags)
2291{ 2937{
2292#if EV_FEATURE_API 2938#if EV_FEATURE_API
2293 ++loop_depth; 2939 ++loop_depth;
2294#endif 2940#endif
2295 2941
2296 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE)); 2942 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2297 2943
2298 loop_done = EVUNLOOP_CANCEL; 2944 loop_done = EVBREAK_CANCEL;
2299 2945
2300 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ 2946 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2301 2947
2302 do 2948 do
2303 { 2949 {
… …
2346 /* calculate blocking time */ 2992 /* calculate blocking time */
2347 { 2993 {
2348 ev_tstamp waittime = 0.; 2994 ev_tstamp waittime = 0.;
2349 ev_tstamp sleeptime = 0.; 2995 ev_tstamp sleeptime = 0.;
2350 2996
2997 /* remember old timestamp for io_blocktime calculation */
2998 ev_tstamp prev_mn_now = mn_now;
2999
3000 /* update time to cancel out callback processing overhead */
3001 time_update (EV_A_ 1e100);
3002
3003 /* from now on, we want a pipe-wake-up */
3004 pipe_write_wanted = 1;
3005
3006 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3007
2351 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3008 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2352 { 3009 {
2353 /* remember old timestamp for io_blocktime calculation */
2354 ev_tstamp prev_mn_now = mn_now;
2355
2356 /* update time to cancel out callback processing overhead */
2357 time_update (EV_A_ 1e100);
2358
2359 waittime = MAX_BLOCKTIME; 3010 waittime = MAX_BLOCKTIME;
2360 3011
2361 if (timercnt) 3012 if (timercnt)
2362 { 3013 {
2363 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3014 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2364 if (waittime > to) waittime = to; 3015 if (waittime > to) waittime = to;
2365 } 3016 }
2366 3017
2367#if EV_PERIODIC_ENABLE 3018#if EV_PERIODIC_ENABLE
2368 if (periodiccnt) 3019 if (periodiccnt)
2369 { 3020 {
2370 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3021 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2371 if (waittime > to) waittime = to; 3022 if (waittime > to) waittime = to;
2372 } 3023 }
2373#endif 3024#endif
2374 3025
2375 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3026 /* don't let timeouts decrease the waittime below timeout_blocktime */
2376 if (expect_false (waittime < timeout_blocktime)) 3027 if (expect_false (waittime < timeout_blocktime))
2377 waittime = timeout_blocktime; 3028 waittime = timeout_blocktime;
3029
3030 /* at this point, we NEED to wait, so we have to ensure */
3031 /* to pass a minimum nonzero value to the backend */
3032 if (expect_false (waittime < backend_mintime))
3033 waittime = backend_mintime;
2378 3034
2379 /* extra check because io_blocktime is commonly 0 */ 3035 /* extra check because io_blocktime is commonly 0 */
2380 if (expect_false (io_blocktime)) 3036 if (expect_false (io_blocktime))
2381 { 3037 {
2382 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3038 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2383 3039
2384 if (sleeptime > waittime - backend_fudge) 3040 if (sleeptime > waittime - backend_mintime)
2385 sleeptime = waittime - backend_fudge; 3041 sleeptime = waittime - backend_mintime;
2386 3042
2387 if (expect_true (sleeptime > 0.)) 3043 if (expect_true (sleeptime > 0.))
2388 { 3044 {
2389 ev_sleep (sleeptime); 3045 ev_sleep (sleeptime);
2390 waittime -= sleeptime; 3046 waittime -= sleeptime;
… …
2393 } 3049 }
2394 3050
2395#if EV_FEATURE_API 3051#if EV_FEATURE_API
2396 ++loop_count; 3052 ++loop_count;
2397#endif 3053#endif
2398 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ 3054 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2399 backend_poll (EV_A_ waittime); 3055 backend_poll (EV_A_ waittime);
2400 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */ 3056 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3057
3058 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3059
3060 if (pipe_write_skipped)
3061 {
3062 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3063 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3064 }
3065
2401 3066
2402 /* update ev_rt_now, do magic */ 3067 /* update ev_rt_now, do magic */
2403 time_update (EV_A_ waittime + sleeptime); 3068 time_update (EV_A_ waittime + sleeptime);
2404 } 3069 }
2405 3070
… …
2423 EV_INVOKE_PENDING; 3088 EV_INVOKE_PENDING;
2424 } 3089 }
2425 while (expect_true ( 3090 while (expect_true (
2426 activecnt 3091 activecnt
2427 && !loop_done 3092 && !loop_done
2428 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3093 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2429 )); 3094 ));
2430 3095
2431 if (loop_done == EVUNLOOP_ONE) 3096 if (loop_done == EVBREAK_ONE)
2432 loop_done = EVUNLOOP_CANCEL; 3097 loop_done = EVBREAK_CANCEL;
2433 3098
2434#if EV_FEATURE_API 3099#if EV_FEATURE_API
2435 --loop_depth; 3100 --loop_depth;
2436#endif 3101#endif
2437} 3102}
2438 3103
2439void 3104void
2440ev_unloop (EV_P_ int how) 3105ev_break (EV_P_ int how)
2441{ 3106{
2442 loop_done = how; 3107 loop_done = how;
2443} 3108}
2444 3109
2445void 3110void
… …
2593 EV_FREQUENT_CHECK; 3258 EV_FREQUENT_CHECK;
2594 3259
2595 wlist_del (&anfds[w->fd].head, (WL)w); 3260 wlist_del (&anfds[w->fd].head, (WL)w);
2596 ev_stop (EV_A_ (W)w); 3261 ev_stop (EV_A_ (W)w);
2597 3262
2598 fd_change (EV_A_ w->fd, 1); 3263 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2599 3264
2600 EV_FREQUENT_CHECK; 3265 EV_FREQUENT_CHECK;
2601} 3266}
2602 3267
2603void noinline 3268void noinline
… …
2656 3321
2657void noinline 3322void noinline
2658ev_timer_again (EV_P_ ev_timer *w) 3323ev_timer_again (EV_P_ ev_timer *w)
2659{ 3324{
2660 EV_FREQUENT_CHECK; 3325 EV_FREQUENT_CHECK;
3326
3327 clear_pending (EV_A_ (W)w);
2661 3328
2662 if (ev_is_active (w)) 3329 if (ev_is_active (w))
2663 { 3330 {
2664 if (w->repeat) 3331 if (w->repeat)
2665 { 3332 {
… …
2695 if (w->reschedule_cb) 3362 if (w->reschedule_cb)
2696 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3363 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2697 else if (w->interval) 3364 else if (w->interval)
2698 { 3365 {
2699 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 3366 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2700 /* this formula differs from the one in periodic_reify because we do not always round up */ 3367 periodic_recalc (EV_A_ w);
2701 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2702 } 3368 }
2703 else 3369 else
2704 ev_at (w) = w->offset; 3370 ev_at (w) = w->offset;
2705 3371
2706 EV_FREQUENT_CHECK; 3372 EV_FREQUENT_CHECK;
… …
2827 sa.sa_handler = ev_sighandler; 3493 sa.sa_handler = ev_sighandler;
2828 sigfillset (&sa.sa_mask); 3494 sigfillset (&sa.sa_mask);
2829 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3495 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2830 sigaction (w->signum, &sa, 0); 3496 sigaction (w->signum, &sa, 0);
2831 3497
3498 if (origflags & EVFLAG_NOSIGMASK)
3499 {
2832 sigemptyset (&sa.sa_mask); 3500 sigemptyset (&sa.sa_mask);
2833 sigaddset (&sa.sa_mask, w->signum); 3501 sigaddset (&sa.sa_mask, w->signum);
2834 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); 3502 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3503 }
2835#endif 3504#endif
2836 } 3505 }
2837 3506
2838 EV_FREQUENT_CHECK; 3507 EV_FREQUENT_CHECK;
2839} 3508}
… …
2980 if (!pend || pend == path) 3649 if (!pend || pend == path)
2981 break; 3650 break;
2982 3651
2983 *pend = 0; 3652 *pend = 0;
2984 w->wd = inotify_add_watch (fs_fd, path, mask); 3653 w->wd = inotify_add_watch (fs_fd, path, mask);
2985 } 3654 }
2986 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3655 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2987 } 3656 }
2988 } 3657 }
2989 3658
2990 if (w->wd >= 0) 3659 if (w->wd >= 0)
… …
3057 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3726 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3058 ofs += sizeof (struct inotify_event) + ev->len; 3727 ofs += sizeof (struct inotify_event) + ev->len;
3059 } 3728 }
3060} 3729}
3061 3730
3062inline_size unsigned int
3063ev_linux_version (void)
3064{
3065 struct utsname buf;
3066 unsigned int v;
3067 int i;
3068 char *p = buf.release;
3069
3070 if (uname (&buf))
3071 return 0;
3072
3073 for (i = 3+1; --i; )
3074 {
3075 unsigned int c = 0;
3076
3077 for (;;)
3078 {
3079 if (*p >= '0' && *p <= '9')
3080 c = c * 10 + *p++ - '0';
3081 else
3082 {
3083 p += *p == '.';
3084 break;
3085 }
3086 }
3087
3088 v = (v << 8) | c;
3089 }
3090
3091 return v;
3092}
3093
3094inline_size void 3731inline_size void ecb_cold
3095ev_check_2625 (EV_P) 3732ev_check_2625 (EV_P)
3096{ 3733{
3097 /* kernels < 2.6.25 are borked 3734 /* kernels < 2.6.25 are borked
3098 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 3735 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3099 */ 3736 */
… …
3104} 3741}
3105 3742
3106inline_size int 3743inline_size int
3107infy_newfd (void) 3744infy_newfd (void)
3108{ 3745{
3109#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 3746#if defined IN_CLOEXEC && defined IN_NONBLOCK
3110 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 3747 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3111 if (fd >= 0) 3748 if (fd >= 0)
3112 return fd; 3749 return fd;
3113#endif 3750#endif
3114 return inotify_init (); 3751 return inotify_init ();
… …
3420 4057
3421#if EV_EMBED_ENABLE 4058#if EV_EMBED_ENABLE
3422void noinline 4059void noinline
3423ev_embed_sweep (EV_P_ ev_embed *w) 4060ev_embed_sweep (EV_P_ ev_embed *w)
3424{ 4061{
3425 ev_loop (w->other, EVLOOP_NONBLOCK); 4062 ev_run (w->other, EVRUN_NOWAIT);
3426} 4063}
3427 4064
3428static void 4065static void
3429embed_io_cb (EV_P_ ev_io *io, int revents) 4066embed_io_cb (EV_P_ ev_io *io, int revents)
3430{ 4067{
3431 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4068 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3432 4069
3433 if (ev_cb (w)) 4070 if (ev_cb (w))
3434 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4071 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3435 else 4072 else
3436 ev_loop (w->other, EVLOOP_NONBLOCK); 4073 ev_run (w->other, EVRUN_NOWAIT);
3437} 4074}
3438 4075
3439static void 4076static void
3440embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4077embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3441{ 4078{
… …
3445 EV_P = w->other; 4082 EV_P = w->other;
3446 4083
3447 while (fdchangecnt) 4084 while (fdchangecnt)
3448 { 4085 {
3449 fd_reify (EV_A); 4086 fd_reify (EV_A);
3450 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4087 ev_run (EV_A_ EVRUN_NOWAIT);
3451 } 4088 }
3452 } 4089 }
3453} 4090}
3454 4091
3455static void 4092static void
… …
3461 4098
3462 { 4099 {
3463 EV_P = w->other; 4100 EV_P = w->other;
3464 4101
3465 ev_loop_fork (EV_A); 4102 ev_loop_fork (EV_A);
3466 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4103 ev_run (EV_A_ EVRUN_NOWAIT);
3467 } 4104 }
3468 4105
3469 ev_embed_start (EV_A_ w); 4106 ev_embed_start (EV_A_ w);
3470} 4107}
3471 4108
… …
3563 4200
3564 EV_FREQUENT_CHECK; 4201 EV_FREQUENT_CHECK;
3565} 4202}
3566#endif 4203#endif
3567 4204
4205#if EV_CLEANUP_ENABLE
4206void
4207ev_cleanup_start (EV_P_ ev_cleanup *w)
4208{
4209 if (expect_false (ev_is_active (w)))
4210 return;
4211
4212 EV_FREQUENT_CHECK;
4213
4214 ev_start (EV_A_ (W)w, ++cleanupcnt);
4215 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
4216 cleanups [cleanupcnt - 1] = w;
4217
4218 /* cleanup watchers should never keep a refcount on the loop */
4219 ev_unref (EV_A);
4220 EV_FREQUENT_CHECK;
4221}
4222
4223void
4224ev_cleanup_stop (EV_P_ ev_cleanup *w)
4225{
4226 clear_pending (EV_A_ (W)w);
4227 if (expect_false (!ev_is_active (w)))
4228 return;
4229
4230 EV_FREQUENT_CHECK;
4231 ev_ref (EV_A);
4232
4233 {
4234 int active = ev_active (w);
4235
4236 cleanups [active - 1] = cleanups [--cleanupcnt];
4237 ev_active (cleanups [active - 1]) = active;
4238 }
4239
4240 ev_stop (EV_A_ (W)w);
4241
4242 EV_FREQUENT_CHECK;
4243}
4244#endif
4245
3568#if EV_ASYNC_ENABLE 4246#if EV_ASYNC_ENABLE
3569void 4247void
3570ev_async_start (EV_P_ ev_async *w) 4248ev_async_start (EV_P_ ev_async *w)
3571{ 4249{
3572 if (expect_false (ev_is_active (w))) 4250 if (expect_false (ev_is_active (w)))
3573 return; 4251 return;
4252
4253 w->sent = 0;
3574 4254
3575 evpipe_init (EV_A); 4255 evpipe_init (EV_A);
3576 4256
3577 EV_FREQUENT_CHECK; 4257 EV_FREQUENT_CHECK;
3578 4258
… …
3681} 4361}
3682 4362
3683/*****************************************************************************/ 4363/*****************************************************************************/
3684 4364
3685#if EV_WALK_ENABLE 4365#if EV_WALK_ENABLE
3686void 4366void ecb_cold
3687ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 4367ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3688{ 4368{
3689 int i, j; 4369 int i, j;
3690 ev_watcher_list *wl, *wn; 4370 ev_watcher_list *wl, *wn;
3691 4371
… …
3735 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 4415 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3736#endif 4416#endif
3737 4417
3738#if EV_IDLE_ENABLE 4418#if EV_IDLE_ENABLE
3739 if (types & EV_IDLE) 4419 if (types & EV_IDLE)
3740 for (j = NUMPRI; i--; ) 4420 for (j = NUMPRI; j--; )
3741 for (i = idlecnt [j]; i--; ) 4421 for (i = idlecnt [j]; i--; )
3742 cb (EV_A_ EV_IDLE, idles [j][i]); 4422 cb (EV_A_ EV_IDLE, idles [j][i]);
3743#endif 4423#endif
3744 4424
3745#if EV_FORK_ENABLE 4425#if EV_FORK_ENABLE
… …
3798 4478
3799#if EV_MULTIPLICITY 4479#if EV_MULTIPLICITY
3800 #include "ev_wrap.h" 4480 #include "ev_wrap.h"
3801#endif 4481#endif
3802 4482
3803#ifdef __cplusplus
3804}
3805#endif
3806

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