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Comparing libev/ev.c (file contents):
Revision 1.385 by root, Wed Jul 20 01:04:03 2011 UTC vs.
Revision 1.458 by root, Sun Oct 27 16:26:07 2013 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008,2009,2010,2011 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007,2008,2009,2010,2011,2012 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 *
… …
59# endif 59# endif
60# ifndef EV_USE_MONOTONIC 60# ifndef EV_USE_MONOTONIC
61# define EV_USE_MONOTONIC 1 61# define EV_USE_MONOTONIC 1
62# endif 62# endif
63# endif 63# endif
64# elif !defined(EV_USE_CLOCK_SYSCALL) 64# elif !defined EV_USE_CLOCK_SYSCALL
65# define EV_USE_CLOCK_SYSCALL 0 65# define EV_USE_CLOCK_SYSCALL 0
66# endif 66# endif
67 67
68# if HAVE_CLOCK_GETTIME 68# if HAVE_CLOCK_GETTIME
69# ifndef EV_USE_MONOTONIC 69# ifndef EV_USE_MONOTONIC
… …
183# include EV_H 183# include EV_H
184#else 184#else
185# include "ev.h" 185# include "ev.h"
186#endif 186#endif
187 187
188EV_CPP(extern "C" {) 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
197#endif
189 198
190#ifndef _WIN32 199#ifndef _WIN32
191# include <sys/time.h> 200# include <sys/time.h>
192# include <sys/wait.h> 201# include <sys/wait.h>
193# include <unistd.h> 202# include <unistd.h>
194#else 203#else
195# include <io.h> 204# include <io.h>
196# define WIN32_LEAN_AND_MEAN 205# define WIN32_LEAN_AND_MEAN
206# include <winsock2.h>
197# include <windows.h> 207# include <windows.h>
198# ifndef EV_SELECT_IS_WINSOCKET 208# ifndef EV_SELECT_IS_WINSOCKET
199# define EV_SELECT_IS_WINSOCKET 1 209# define EV_SELECT_IS_WINSOCKET 1
200# endif 210# endif
201# undef EV_AVOID_STDIO 211# undef EV_AVOID_STDIO
… …
210#define _DARWIN_UNLIMITED_SELECT 1 220#define _DARWIN_UNLIMITED_SELECT 1
211 221
212/* this block tries to deduce configuration from header-defined symbols and defaults */ 222/* this block tries to deduce configuration from header-defined symbols and defaults */
213 223
214/* try to deduce the maximum number of signals on this platform */ 224/* try to deduce the maximum number of signals on this platform */
215#if defined (EV_NSIG) 225#if defined EV_NSIG
216/* use what's provided */ 226/* use what's provided */
217#elif defined (NSIG) 227#elif defined NSIG
218# define EV_NSIG (NSIG) 228# define EV_NSIG (NSIG)
219#elif defined(_NSIG) 229#elif defined _NSIG
220# define EV_NSIG (_NSIG) 230# define EV_NSIG (_NSIG)
221#elif defined (SIGMAX) 231#elif defined SIGMAX
222# define EV_NSIG (SIGMAX+1) 232# define EV_NSIG (SIGMAX+1)
223#elif defined (SIG_MAX) 233#elif defined SIG_MAX
224# define EV_NSIG (SIG_MAX+1) 234# define EV_NSIG (SIG_MAX+1)
225#elif defined (_SIG_MAX) 235#elif defined _SIG_MAX
226# define EV_NSIG (_SIG_MAX+1) 236# define EV_NSIG (_SIG_MAX+1)
227#elif defined (MAXSIG) 237#elif defined MAXSIG
228# define EV_NSIG (MAXSIG+1) 238# define EV_NSIG (MAXSIG+1)
229#elif defined (MAX_SIG) 239#elif defined MAX_SIG
230# define EV_NSIG (MAX_SIG+1) 240# define EV_NSIG (MAX_SIG+1)
231#elif defined (SIGARRAYSIZE) 241#elif defined SIGARRAYSIZE
232# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */ 242# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
233#elif defined (_sys_nsig) 243#elif defined _sys_nsig
234# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ 244# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
235#else 245#else
236# error "unable to find value for NSIG, please report" 246# error "unable to find value for NSIG, please report"
237/* to make it compile regardless, just remove the above line, */ 247/* to make it compile regardless, just remove the above line, */
238/* but consider reporting it, too! :) */ 248/* but consider reporting it, too! :) */
… …
250# define EV_USE_CLOCK_SYSCALL 0 260# define EV_USE_CLOCK_SYSCALL 0
251# endif 261# endif
252#endif 262#endif
253 263
254#ifndef EV_USE_MONOTONIC 264#ifndef EV_USE_MONOTONIC
255# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 265# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
256# define EV_USE_MONOTONIC EV_FEATURE_OS 266# define EV_USE_MONOTONIC EV_FEATURE_OS
257# else 267# else
258# define EV_USE_MONOTONIC 0 268# define EV_USE_MONOTONIC 0
259# endif 269# endif
260#endif 270#endif
… …
347 357
348#ifndef EV_HEAP_CACHE_AT 358#ifndef EV_HEAP_CACHE_AT
349# define EV_HEAP_CACHE_AT EV_FEATURE_DATA 359# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
350#endif 360#endif
351 361
362#ifdef ANDROID
363/* supposedly, android doesn't typedef fd_mask */
364# undef EV_USE_SELECT
365# define EV_USE_SELECT 0
366/* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */
367# undef EV_USE_CLOCK_SYSCALL
368# define EV_USE_CLOCK_SYSCALL 0
369#endif
370
371/* aix's poll.h seems to cause lots of trouble */
372#ifdef _AIX
373/* AIX has a completely broken poll.h header */
374# undef EV_USE_POLL
375# define EV_USE_POLL 0
376#endif
377
352/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ 378/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
353/* which makes programs even slower. might work on other unices, too. */ 379/* which makes programs even slower. might work on other unices, too. */
354#if EV_USE_CLOCK_SYSCALL 380#if EV_USE_CLOCK_SYSCALL
355# include <syscall.h> 381# include <sys/syscall.h>
356# ifdef SYS_clock_gettime 382# ifdef SYS_clock_gettime
357# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 383# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
358# undef EV_USE_MONOTONIC 384# undef EV_USE_MONOTONIC
359# define EV_USE_MONOTONIC 1 385# define EV_USE_MONOTONIC 1
360# else 386# else
… …
363# endif 389# endif
364#endif 390#endif
365 391
366/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 392/* this block fixes any misconfiguration where we know we run into trouble otherwise */
367 393
368#ifdef _AIX
369/* AIX has a completely broken poll.h header */
370# undef EV_USE_POLL
371# define EV_USE_POLL 0
372#endif
373
374#ifndef CLOCK_MONOTONIC 394#ifndef CLOCK_MONOTONIC
375# undef EV_USE_MONOTONIC 395# undef EV_USE_MONOTONIC
376# define EV_USE_MONOTONIC 0 396# define EV_USE_MONOTONIC 0
377#endif 397#endif
378 398
… …
386# define EV_USE_INOTIFY 0 406# define EV_USE_INOTIFY 0
387#endif 407#endif
388 408
389#if !EV_USE_NANOSLEEP 409#if !EV_USE_NANOSLEEP
390/* hp-ux has it in sys/time.h, which we unconditionally include above */ 410/* hp-ux has it in sys/time.h, which we unconditionally include above */
391# if !defined(_WIN32) && !defined(__hpux) 411# if !defined _WIN32 && !defined __hpux
392# include <sys/select.h> 412# include <sys/select.h>
393# endif 413# endif
394#endif 414#endif
395 415
396#if EV_USE_INOTIFY 416#if EV_USE_INOTIFY
… …
399/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 419/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
400# ifndef IN_DONT_FOLLOW 420# ifndef IN_DONT_FOLLOW
401# undef EV_USE_INOTIFY 421# undef EV_USE_INOTIFY
402# define EV_USE_INOTIFY 0 422# define EV_USE_INOTIFY 0
403# endif 423# endif
404#endif
405
406#if EV_SELECT_IS_WINSOCKET
407# include <winsock.h>
408#endif 424#endif
409 425
410#if EV_USE_EVENTFD 426#if EV_USE_EVENTFD
411/* 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 */
412# include <stdint.h> 428# include <stdint.h>
… …
464#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 480#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
465 481
466#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0) 482#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) 483#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
468 484
469/* the following are taken from libecb */ 485/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
470/* ecb.h start */ 486/* ECB.H BEGIN */
487/*
488 * libecb - http://software.schmorp.de/pkg/libecb
489 *
490 * Copyright (©) 2009-2012 Marc Alexander Lehmann <libecb@schmorp.de>
491 * Copyright (©) 2011 Emanuele Giaquinta
492 * All rights reserved.
493 *
494 * Redistribution and use in source and binary forms, with or without modifica-
495 * tion, are permitted provided that the following conditions are met:
496 *
497 * 1. Redistributions of source code must retain the above copyright notice,
498 * this list of conditions and the following disclaimer.
499 *
500 * 2. Redistributions in binary form must reproduce the above copyright
501 * notice, this list of conditions and the following disclaimer in the
502 * documentation and/or other materials provided with the distribution.
503 *
504 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
505 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
506 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
507 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
508 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
509 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
510 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
511 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
512 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
513 * OF THE POSSIBILITY OF SUCH DAMAGE.
514 */
515
516#ifndef ECB_H
517#define ECB_H
518
519/* 16 bits major, 16 bits minor */
520#define ECB_VERSION 0x00010003
521
522#ifdef _WIN32
523 typedef signed char int8_t;
524 typedef unsigned char uint8_t;
525 typedef signed short int16_t;
526 typedef unsigned short uint16_t;
527 typedef signed int int32_t;
528 typedef unsigned int uint32_t;
529 #if __GNUC__
530 typedef signed long long int64_t;
531 typedef unsigned long long uint64_t;
532 #else /* _MSC_VER || __BORLANDC__ */
533 typedef signed __int64 int64_t;
534 typedef unsigned __int64 uint64_t;
535 #endif
536 #ifdef _WIN64
537 #define ECB_PTRSIZE 8
538 typedef uint64_t uintptr_t;
539 typedef int64_t intptr_t;
540 #else
541 #define ECB_PTRSIZE 4
542 typedef uint32_t uintptr_t;
543 typedef int32_t intptr_t;
544 #endif
545#else
546 #include <inttypes.h>
547 #if UINTMAX_MAX > 0xffffffffU
548 #define ECB_PTRSIZE 8
549 #else
550 #define ECB_PTRSIZE 4
551 #endif
552#endif
553
554/* work around x32 idiocy by defining proper macros */
555#if __x86_64 || _M_AMD64
556 #if _ILP32
557 #define ECB_AMD64_X32 1
558 #else
559 #define ECB_AMD64 1
560 #endif
561#endif
471 562
472/* many compilers define _GNUC_ to some versions but then only implement 563/* many compilers define _GNUC_ to some versions but then only implement
473 * what their idiot authors think are the "more important" extensions, 564 * what their idiot authors think are the "more important" extensions,
474 * causing enourmous grief in return for some better fake benchmark numbers. 565 * causing enormous grief in return for some better fake benchmark numbers.
475 * or so. 566 * or so.
476 * we try to detect these and simply assume they are not gcc - if they have 567 * we try to detect these and simply assume they are not gcc - if they have
477 * an issue with that they should have done it right in the first place. 568 * an issue with that they should have done it right in the first place.
478 */ 569 */
479#ifndef ECB_GCC_VERSION 570#ifndef ECB_GCC_VERSION
480 #if !defined(__GNUC_MINOR__) || defined(__INTEL_COMPILER) || defined(__SUNPRO_C) || defined(__SUNPRO_CC) || defined(__llvm__) || defined(__clang__) 571 #if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
481 #define ECB_GCC_VERSION(major,minor) 0 572 #define ECB_GCC_VERSION(major,minor) 0
482 #else 573 #else
483 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor))) 574 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
484 #endif 575 #endif
485#endif 576#endif
577
578#define ECB_C (__STDC__+0) /* this assumes that __STDC__ is either empty or a number */
579#define ECB_C99 (__STDC_VERSION__ >= 199901L)
580#define ECB_C11 (__STDC_VERSION__ >= 201112L)
581#define ECB_CPP (__cplusplus+0)
582#define ECB_CPP11 (__cplusplus >= 201103L)
583
584#if ECB_CPP
585 #define ECB_EXTERN_C extern "C"
586 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
587 #define ECB_EXTERN_C_END }
588#else
589 #define ECB_EXTERN_C extern
590 #define ECB_EXTERN_C_BEG
591 #define ECB_EXTERN_C_END
592#endif
593
594/*****************************************************************************/
595
596/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
597/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
598
599#if ECB_NO_THREADS
600 #define ECB_NO_SMP 1
601#endif
602
603#if ECB_NO_SMP
604 #define ECB_MEMORY_FENCE do { } while (0)
605#endif
606
607#ifndef ECB_MEMORY_FENCE
608 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
609 #if __i386 || __i386__
610 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
611 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
612 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
613 #elif __amd64 || __amd64__ || __x86_64 || __x86_64__
614 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
615 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
616 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
617 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
618 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
619 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
620 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__
621 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
622 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
623 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__
624 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
625 #elif __sparc || __sparc__
626 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
627 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
628 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
629 #elif defined __s390__ || defined __s390x__
630 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
631 #elif defined __mips__
632 /* GNU/Linux emulates sync on mips1 architectures, so we force its use */
633 /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
634 #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
635 #elif defined __alpha__
636 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
637 #elif defined __hppa__
638 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
639 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
640 #elif defined __ia64__
641 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
642 #elif defined __m68k__
643 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
644 #elif defined __m88k__
645 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
646 #elif defined __sh__
647 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
648 #endif
649 #endif
650#endif
651
652#ifndef ECB_MEMORY_FENCE
653 #if ECB_GCC_VERSION(4,7)
654 /* see comment below (stdatomic.h) about the C11 memory model. */
655 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
656
657 /* The __has_feature syntax from clang is so misdesigned that we cannot use it
658 * without risking compile time errors with other compilers. We *could*
659 * define our own ecb_clang_has_feature, but I just can't be bothered to work
660 * around this shit time and again.
661 * #elif defined __clang && __has_feature (cxx_atomic)
662 * // see comment below (stdatomic.h) about the C11 memory model.
663 * #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
664 */
665
666 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
667 #define ECB_MEMORY_FENCE __sync_synchronize ()
668 #elif _MSC_VER >= 1400 /* VC++ 2005 */
669 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
670 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
671 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
672 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
673 #elif defined _WIN32
674 #include <WinNT.h>
675 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
676 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
677 #include <mbarrier.h>
678 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
679 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
680 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
681 #elif __xlC__
682 #define ECB_MEMORY_FENCE __sync ()
683 #endif
684#endif
685
686#ifndef ECB_MEMORY_FENCE
687 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
688 /* we assume that these memory fences work on all variables/all memory accesses, */
689 /* not just C11 atomics and atomic accesses */
690 #include <stdatomic.h>
691 /* Unfortunately, neither gcc 4.7 nor clang 3.1 generate any instructions for */
692 /* any fence other than seq_cst, which isn't very efficient for us. */
693 /* Why that is, we don't know - either the C11 memory model is quite useless */
694 /* for most usages, or gcc and clang have a bug */
695 /* I *currently* lean towards the latter, and inefficiently implement */
696 /* all three of ecb's fences as a seq_cst fence */
697 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
698 #endif
699#endif
700
701#ifndef ECB_MEMORY_FENCE
702 #if !ECB_AVOID_PTHREADS
703 /*
704 * if you get undefined symbol references to pthread_mutex_lock,
705 * or failure to find pthread.h, then you should implement
706 * the ECB_MEMORY_FENCE operations for your cpu/compiler
707 * OR provide pthread.h and link against the posix thread library
708 * of your system.
709 */
710 #include <pthread.h>
711 #define ECB_NEEDS_PTHREADS 1
712 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
713
714 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
715 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
716 #endif
717#endif
718
719#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
720 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
721#endif
722
723#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
724 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
725#endif
726
727/*****************************************************************************/
486 728
487#if __cplusplus 729#if __cplusplus
488 #define ecb_inline static inline 730 #define ecb_inline static inline
489#elif ECB_GCC_VERSION(2,5) 731#elif ECB_GCC_VERSION(2,5)
490 #define ecb_inline static __inline__ 732 #define ecb_inline static __inline__
… …
492 #define ecb_inline static inline 734 #define ecb_inline static inline
493#else 735#else
494 #define ecb_inline static 736 #define ecb_inline static
495#endif 737#endif
496 738
497#ifndef ECB_MEMORY_FENCE
498 #if ECB_GCC_VERSION(2,5) 739#if ECB_GCC_VERSION(3,3)
499 #if __x86 740 #define ecb_restrict __restrict__
500 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory") 741#elif ECB_C99
501 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE 742 #define ecb_restrict restrict
502 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE /* better be safe than sorry */ 743#else
503 #elif __amd64 744 #define ecb_restrict
504 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
505 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("lfence" : : : "memory")
506 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("sfence")
507 #endif
508 #endif 745#endif
509#endif
510 746
511#ifndef ECB_MEMORY_FENCE 747typedef int ecb_bool;
512 #if ECB_GCC_VERSION(4,4)
513 #define ECB_MEMORY_FENCE __sync_synchronize ()
514 #define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); })
515 #define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); })
516 #elif defined(_WIN32) && defined(MemoryBarrier)
517 #define ECB_MEMORY_FENCE MemoryBarrier ()
518 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
519 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
520 #endif
521#endif
522 748
523#ifndef ECB_MEMORY_FENCE 749#define ECB_CONCAT_(a, b) a ## b
524 #include <pthread.h> 750#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
751#define ECB_STRINGIFY_(a) # a
752#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
525 753
526 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER; 754#define ecb_function_ ecb_inline
527 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
528 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
529 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
530#endif
531 755
532#if ECB_GCC_VERSION(3,1) 756#if ECB_GCC_VERSION(3,1)
533 #define ecb_attribute(attrlist) __attribute__(attrlist) 757 #define ecb_attribute(attrlist) __attribute__(attrlist)
534 #define ecb_is_constant(expr) __builtin_constant_p (expr) 758 #define ecb_is_constant(expr) __builtin_constant_p (expr)
535 #define ecb_expect(expr,value) __builtin_expect ((expr),(value)) 759 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
… …
539 #define ecb_is_constant(expr) 0 763 #define ecb_is_constant(expr) 0
540 #define ecb_expect(expr,value) (expr) 764 #define ecb_expect(expr,value) (expr)
541 #define ecb_prefetch(addr,rw,locality) 765 #define ecb_prefetch(addr,rw,locality)
542#endif 766#endif
543 767
768/* no emulation for ecb_decltype */
769#if ECB_GCC_VERSION(4,5)
770 #define ecb_decltype(x) __decltype(x)
771#elif ECB_GCC_VERSION(3,0)
772 #define ecb_decltype(x) __typeof(x)
773#endif
774
544#define ecb_noinline ecb_attribute ((__noinline__)) 775#define ecb_noinline ecb_attribute ((__noinline__))
545#define ecb_noreturn ecb_attribute ((__noreturn__))
546#define ecb_unused ecb_attribute ((__unused__)) 776#define ecb_unused ecb_attribute ((__unused__))
547#define ecb_const ecb_attribute ((__const__)) 777#define ecb_const ecb_attribute ((__const__))
548#define ecb_pure ecb_attribute ((__pure__)) 778#define ecb_pure ecb_attribute ((__pure__))
779
780#if ECB_C11
781 #define ecb_noreturn _Noreturn
782#else
783 #define ecb_noreturn ecb_attribute ((__noreturn__))
784#endif
549 785
550#if ECB_GCC_VERSION(4,3) 786#if ECB_GCC_VERSION(4,3)
551 #define ecb_artificial ecb_attribute ((__artificial__)) 787 #define ecb_artificial ecb_attribute ((__artificial__))
552 #define ecb_hot ecb_attribute ((__hot__)) 788 #define ecb_hot ecb_attribute ((__hot__))
553 #define ecb_cold ecb_attribute ((__cold__)) 789 #define ecb_cold ecb_attribute ((__cold__))
… …
560/* put around conditional expressions if you are very sure that the */ 796/* put around conditional expressions if you are very sure that the */
561/* expression is mostly true or mostly false. note that these return */ 797/* expression is mostly true or mostly false. note that these return */
562/* booleans, not the expression. */ 798/* booleans, not the expression. */
563#define ecb_expect_false(expr) ecb_expect (!!(expr), 0) 799#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
564#define ecb_expect_true(expr) ecb_expect (!!(expr), 1) 800#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
565/* ecb.h end */ 801/* for compatibility to the rest of the world */
802#define ecb_likely(expr) ecb_expect_true (expr)
803#define ecb_unlikely(expr) ecb_expect_false (expr)
804
805/* count trailing zero bits and count # of one bits */
806#if ECB_GCC_VERSION(3,4)
807 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
808 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
809 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
810 #define ecb_ctz32(x) __builtin_ctz (x)
811 #define ecb_ctz64(x) __builtin_ctzll (x)
812 #define ecb_popcount32(x) __builtin_popcount (x)
813 /* no popcountll */
814#else
815 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const;
816 ecb_function_ int
817 ecb_ctz32 (uint32_t x)
818 {
819 int r = 0;
820
821 x &= ~x + 1; /* this isolates the lowest bit */
822
823#if ECB_branchless_on_i386
824 r += !!(x & 0xaaaaaaaa) << 0;
825 r += !!(x & 0xcccccccc) << 1;
826 r += !!(x & 0xf0f0f0f0) << 2;
827 r += !!(x & 0xff00ff00) << 3;
828 r += !!(x & 0xffff0000) << 4;
829#else
830 if (x & 0xaaaaaaaa) r += 1;
831 if (x & 0xcccccccc) r += 2;
832 if (x & 0xf0f0f0f0) r += 4;
833 if (x & 0xff00ff00) r += 8;
834 if (x & 0xffff0000) r += 16;
835#endif
836
837 return r;
838 }
839
840 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const;
841 ecb_function_ int
842 ecb_ctz64 (uint64_t x)
843 {
844 int shift = x & 0xffffffffU ? 0 : 32;
845 return ecb_ctz32 (x >> shift) + shift;
846 }
847
848 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const;
849 ecb_function_ int
850 ecb_popcount32 (uint32_t x)
851 {
852 x -= (x >> 1) & 0x55555555;
853 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
854 x = ((x >> 4) + x) & 0x0f0f0f0f;
855 x *= 0x01010101;
856
857 return x >> 24;
858 }
859
860 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const;
861 ecb_function_ int ecb_ld32 (uint32_t x)
862 {
863 int r = 0;
864
865 if (x >> 16) { x >>= 16; r += 16; }
866 if (x >> 8) { x >>= 8; r += 8; }
867 if (x >> 4) { x >>= 4; r += 4; }
868 if (x >> 2) { x >>= 2; r += 2; }
869 if (x >> 1) { r += 1; }
870
871 return r;
872 }
873
874 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const;
875 ecb_function_ int ecb_ld64 (uint64_t x)
876 {
877 int r = 0;
878
879 if (x >> 32) { x >>= 32; r += 32; }
880
881 return r + ecb_ld32 (x);
882 }
883#endif
884
885ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) ecb_const;
886ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
887ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) ecb_const;
888ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
889
890ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const;
891ecb_function_ uint8_t ecb_bitrev8 (uint8_t x)
892{
893 return ( (x * 0x0802U & 0x22110U)
894 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
895}
896
897ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const;
898ecb_function_ uint16_t ecb_bitrev16 (uint16_t x)
899{
900 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
901 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
902 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
903 x = ( x >> 8 ) | ( x << 8);
904
905 return x;
906}
907
908ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const;
909ecb_function_ uint32_t ecb_bitrev32 (uint32_t x)
910{
911 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
912 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
913 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
914 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
915 x = ( x >> 16 ) | ( x << 16);
916
917 return x;
918}
919
920/* popcount64 is only available on 64 bit cpus as gcc builtin */
921/* so for this version we are lazy */
922ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const;
923ecb_function_ int
924ecb_popcount64 (uint64_t x)
925{
926 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
927}
928
929ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const;
930ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const;
931ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const;
932ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const;
933ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const;
934ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const;
935ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const;
936ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const;
937
938ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
939ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
940ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
941ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
942ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
943ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
944ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
945ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
946
947#if ECB_GCC_VERSION(4,3)
948 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
949 #define ecb_bswap32(x) __builtin_bswap32 (x)
950 #define ecb_bswap64(x) __builtin_bswap64 (x)
951#else
952 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const;
953 ecb_function_ uint16_t
954 ecb_bswap16 (uint16_t x)
955 {
956 return ecb_rotl16 (x, 8);
957 }
958
959 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const;
960 ecb_function_ uint32_t
961 ecb_bswap32 (uint32_t x)
962 {
963 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
964 }
965
966 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const;
967 ecb_function_ uint64_t
968 ecb_bswap64 (uint64_t x)
969 {
970 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
971 }
972#endif
973
974#if ECB_GCC_VERSION(4,5)
975 #define ecb_unreachable() __builtin_unreachable ()
976#else
977 /* this seems to work fine, but gcc always emits a warning for it :/ */
978 ecb_inline void ecb_unreachable (void) ecb_noreturn;
979 ecb_inline void ecb_unreachable (void) { }
980#endif
981
982/* try to tell the compiler that some condition is definitely true */
983#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
984
985ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const;
986ecb_inline unsigned char
987ecb_byteorder_helper (void)
988{
989 /* the union code still generates code under pressure in gcc, */
990 /* but less than using pointers, and always seems to */
991 /* successfully return a constant. */
992 /* the reason why we have this horrible preprocessor mess */
993 /* is to avoid it in all cases, at least on common architectures */
994 /* or when using a recent enough gcc version (>= 4.6) */
995#if __i386 || __i386__ || _M_X86 || __amd64 || __amd64__ || _M_X64
996 return 0x44;
997#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
998 return 0x44;
999#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
1000 return 0x11;
1001#else
1002 union
1003 {
1004 uint32_t i;
1005 uint8_t c;
1006 } u = { 0x11223344 };
1007 return u.c;
1008#endif
1009}
1010
1011ecb_inline ecb_bool ecb_big_endian (void) ecb_const;
1012ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
1013ecb_inline ecb_bool ecb_little_endian (void) ecb_const;
1014ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }
1015
1016#if ECB_GCC_VERSION(3,0) || ECB_C99
1017 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
1018#else
1019 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
1020#endif
1021
1022#if __cplusplus
1023 template<typename T>
1024 static inline T ecb_div_rd (T val, T div)
1025 {
1026 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
1027 }
1028 template<typename T>
1029 static inline T ecb_div_ru (T val, T div)
1030 {
1031 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
1032 }
1033#else
1034 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
1035 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
1036#endif
1037
1038#if ecb_cplusplus_does_not_suck
1039 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
1040 template<typename T, int N>
1041 static inline int ecb_array_length (const T (&arr)[N])
1042 {
1043 return N;
1044 }
1045#else
1046 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
1047#endif
1048
1049/*******************************************************************************/
1050/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1051
1052/* basically, everything uses "ieee pure-endian" floating point numbers */
1053/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1054#if 0 \
1055 || __i386 || __i386__ \
1056 || __amd64 || __amd64__ || __x86_64 || __x86_64__ \
1057 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1058 || defined __arm__ && defined __ARM_EABI__ \
1059 || defined __s390__ || defined __s390x__ \
1060 || defined __mips__ \
1061 || defined __alpha__ \
1062 || defined __hppa__ \
1063 || defined __ia64__ \
1064 || defined __m68k__ \
1065 || defined __m88k__ \
1066 || defined __sh__ \
1067 || defined _M_IX86 || defined _M_AMD64 || defined _M_IA64
1068 #define ECB_STDFP 1
1069 #include <string.h> /* for memcpy */
1070#else
1071 #define ECB_STDFP 0
1072#endif
1073
1074#ifndef ECB_NO_LIBM
1075
1076 #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */
1077
1078 #ifdef NEN
1079 #define ECB_NAN NAN
1080 #else
1081 #define ECB_NAN INFINITY
1082 #endif
1083
1084 /* converts an ieee half/binary16 to a float */
1085 ecb_function_ float ecb_binary16_to_float (uint16_t x) ecb_const;
1086 ecb_function_ float
1087 ecb_binary16_to_float (uint16_t x)
1088 {
1089 int e = (x >> 10) & 0x1f;
1090 int m = x & 0x3ff;
1091 float r;
1092
1093 if (!e ) r = ldexpf (m , -24);
1094 else if (e != 31) r = ldexpf (m + 0x400, e - 25);
1095 else if (m ) r = ECB_NAN;
1096 else r = INFINITY;
1097
1098 return x & 0x8000 ? -r : r;
1099 }
1100
1101 /* convert a float to ieee single/binary32 */
1102 ecb_function_ uint32_t ecb_float_to_binary32 (float x) ecb_const;
1103 ecb_function_ uint32_t
1104 ecb_float_to_binary32 (float x)
1105 {
1106 uint32_t r;
1107
1108 #if ECB_STDFP
1109 memcpy (&r, &x, 4);
1110 #else
1111 /* slow emulation, works for anything but -0 */
1112 uint32_t m;
1113 int e;
1114
1115 if (x == 0e0f ) return 0x00000000U;
1116 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1117 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1118 if (x != x ) return 0x7fbfffffU;
1119
1120 m = frexpf (x, &e) * 0x1000000U;
1121
1122 r = m & 0x80000000U;
1123
1124 if (r)
1125 m = -m;
1126
1127 if (e <= -126)
1128 {
1129 m &= 0xffffffU;
1130 m >>= (-125 - e);
1131 e = -126;
1132 }
1133
1134 r |= (e + 126) << 23;
1135 r |= m & 0x7fffffU;
1136 #endif
1137
1138 return r;
1139 }
1140
1141 /* converts an ieee single/binary32 to a float */
1142 ecb_function_ float ecb_binary32_to_float (uint32_t x) ecb_const;
1143 ecb_function_ float
1144 ecb_binary32_to_float (uint32_t x)
1145 {
1146 float r;
1147
1148 #if ECB_STDFP
1149 memcpy (&r, &x, 4);
1150 #else
1151 /* emulation, only works for normals and subnormals and +0 */
1152 int neg = x >> 31;
1153 int e = (x >> 23) & 0xffU;
1154
1155 x &= 0x7fffffU;
1156
1157 if (e)
1158 x |= 0x800000U;
1159 else
1160 e = 1;
1161
1162 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1163 r = ldexpf (x * (0.5f / 0x800000U), e - 126);
1164
1165 r = neg ? -r : r;
1166 #endif
1167
1168 return r;
1169 }
1170
1171 /* convert a double to ieee double/binary64 */
1172 ecb_function_ uint64_t ecb_double_to_binary64 (double x) ecb_const;
1173 ecb_function_ uint64_t
1174 ecb_double_to_binary64 (double x)
1175 {
1176 uint64_t r;
1177
1178 #if ECB_STDFP
1179 memcpy (&r, &x, 8);
1180 #else
1181 /* slow emulation, works for anything but -0 */
1182 uint64_t m;
1183 int e;
1184
1185 if (x == 0e0 ) return 0x0000000000000000U;
1186 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1187 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1188 if (x != x ) return 0X7ff7ffffffffffffU;
1189
1190 m = frexp (x, &e) * 0x20000000000000U;
1191
1192 r = m & 0x8000000000000000;;
1193
1194 if (r)
1195 m = -m;
1196
1197 if (e <= -1022)
1198 {
1199 m &= 0x1fffffffffffffU;
1200 m >>= (-1021 - e);
1201 e = -1022;
1202 }
1203
1204 r |= ((uint64_t)(e + 1022)) << 52;
1205 r |= m & 0xfffffffffffffU;
1206 #endif
1207
1208 return r;
1209 }
1210
1211 /* converts an ieee double/binary64 to a double */
1212 ecb_function_ double ecb_binary64_to_double (uint64_t x) ecb_const;
1213 ecb_function_ double
1214 ecb_binary64_to_double (uint64_t x)
1215 {
1216 double r;
1217
1218 #if ECB_STDFP
1219 memcpy (&r, &x, 8);
1220 #else
1221 /* emulation, only works for normals and subnormals and +0 */
1222 int neg = x >> 63;
1223 int e = (x >> 52) & 0x7ffU;
1224
1225 x &= 0xfffffffffffffU;
1226
1227 if (e)
1228 x |= 0x10000000000000U;
1229 else
1230 e = 1;
1231
1232 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1233 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1234
1235 r = neg ? -r : r;
1236 #endif
1237
1238 return r;
1239 }
1240
1241#endif
1242
1243#endif
1244
1245/* ECB.H END */
1246
1247#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
1248/* if your architecture doesn't need memory fences, e.g. because it is
1249 * single-cpu/core, or if you use libev in a project that doesn't use libev
1250 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
1251 * libev, in which cases the memory fences become nops.
1252 * alternatively, you can remove this #error and link against libpthread,
1253 * which will then provide the memory fences.
1254 */
1255# error "memory fences not defined for your architecture, please report"
1256#endif
1257
1258#ifndef ECB_MEMORY_FENCE
1259# define ECB_MEMORY_FENCE do { } while (0)
1260# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1261# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1262#endif
566 1263
567#define expect_false(cond) ecb_expect_false (cond) 1264#define expect_false(cond) ecb_expect_false (cond)
568#define expect_true(cond) ecb_expect_true (cond) 1265#define expect_true(cond) ecb_expect_true (cond)
569#define noinline ecb_noinline 1266#define noinline ecb_noinline
570 1267
… …
716{ 1413{
717 write (STDERR_FILENO, msg, strlen (msg)); 1414 write (STDERR_FILENO, msg, strlen (msg));
718} 1415}
719#endif 1416#endif
720 1417
721static void (*syserr_cb)(const char *msg); 1418static void (*syserr_cb)(const char *msg) EV_THROW;
722 1419
723void ecb_cold 1420void ecb_cold
724ev_set_syserr_cb (void (*cb)(const char *msg)) 1421ev_set_syserr_cb (void (*cb)(const char *msg) EV_THROW) EV_THROW
725{ 1422{
726 syserr_cb = cb; 1423 syserr_cb = cb;
727} 1424}
728 1425
729static void noinline ecb_cold 1426static void noinline ecb_cold
… …
747 abort (); 1444 abort ();
748 } 1445 }
749} 1446}
750 1447
751static void * 1448static void *
752ev_realloc_emul (void *ptr, long size) 1449ev_realloc_emul (void *ptr, long size) EV_THROW
753{ 1450{
754#if __GLIBC__
755 return realloc (ptr, size);
756#else
757 /* some systems, notably openbsd and darwin, fail to properly 1451 /* some systems, notably openbsd and darwin, fail to properly
758 * implement realloc (x, 0) (as required by both ansi c-89 and 1452 * implement realloc (x, 0) (as required by both ansi c-89 and
759 * the single unix specification, so work around them here. 1453 * the single unix specification, so work around them here.
1454 * recently, also (at least) fedora and debian started breaking it,
1455 * despite documenting it otherwise.
760 */ 1456 */
761 1457
762 if (size) 1458 if (size)
763 return realloc (ptr, size); 1459 return realloc (ptr, size);
764 1460
765 free (ptr); 1461 free (ptr);
766 return 0; 1462 return 0;
767#endif
768} 1463}
769 1464
770static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1465static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;
771 1466
772void ecb_cold 1467void ecb_cold
773ev_set_allocator (void *(*cb)(void *ptr, long size)) 1468ev_set_allocator (void *(*cb)(void *ptr, long size) EV_THROW) EV_THROW
774{ 1469{
775 alloc = cb; 1470 alloc = cb;
776} 1471}
777 1472
778inline_speed void * 1473inline_speed void *
… …
866 #undef VAR 1561 #undef VAR
867 }; 1562 };
868 #include "ev_wrap.h" 1563 #include "ev_wrap.h"
869 1564
870 static struct ev_loop default_loop_struct; 1565 static struct ev_loop default_loop_struct;
871 struct ev_loop *ev_default_loop_ptr; 1566 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
872 1567
873#else 1568#else
874 1569
875 ev_tstamp ev_rt_now; 1570 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */
876 #define VAR(name,decl) static decl; 1571 #define VAR(name,decl) static decl;
877 #include "ev_vars.h" 1572 #include "ev_vars.h"
878 #undef VAR 1573 #undef VAR
879 1574
880 static int ev_default_loop_ptr; 1575 static int ev_default_loop_ptr;
… …
895 1590
896/*****************************************************************************/ 1591/*****************************************************************************/
897 1592
898#ifndef EV_HAVE_EV_TIME 1593#ifndef EV_HAVE_EV_TIME
899ev_tstamp 1594ev_tstamp
900ev_time (void) 1595ev_time (void) EV_THROW
901{ 1596{
902#if EV_USE_REALTIME 1597#if EV_USE_REALTIME
903 if (expect_true (have_realtime)) 1598 if (expect_true (have_realtime))
904 { 1599 {
905 struct timespec ts; 1600 struct timespec ts;
… …
929 return ev_time (); 1624 return ev_time ();
930} 1625}
931 1626
932#if EV_MULTIPLICITY 1627#if EV_MULTIPLICITY
933ev_tstamp 1628ev_tstamp
934ev_now (EV_P) 1629ev_now (EV_P) EV_THROW
935{ 1630{
936 return ev_rt_now; 1631 return ev_rt_now;
937} 1632}
938#endif 1633#endif
939 1634
940void 1635void
941ev_sleep (ev_tstamp delay) 1636ev_sleep (ev_tstamp delay) EV_THROW
942{ 1637{
943 if (delay > 0.) 1638 if (delay > 0.)
944 { 1639 {
945#if EV_USE_NANOSLEEP 1640#if EV_USE_NANOSLEEP
946 struct timespec ts; 1641 struct timespec ts;
947 1642
948 EV_TS_SET (ts, delay); 1643 EV_TS_SET (ts, delay);
949 nanosleep (&ts, 0); 1644 nanosleep (&ts, 0);
950#elif defined(_WIN32) 1645#elif defined _WIN32
951 Sleep ((unsigned long)(delay * 1e3)); 1646 Sleep ((unsigned long)(delay * 1e3));
952#else 1647#else
953 struct timeval tv; 1648 struct timeval tv;
954 1649
955 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1650 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
… …
974 1669
975 do 1670 do
976 ncur <<= 1; 1671 ncur <<= 1;
977 while (cnt > ncur); 1672 while (cnt > ncur);
978 1673
979 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1674 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
980 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1675 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
981 { 1676 {
982 ncur *= elem; 1677 ncur *= elem;
983 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1678 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
984 ncur = ncur - sizeof (void *) * 4; 1679 ncur = ncur - sizeof (void *) * 4;
… …
1027pendingcb (EV_P_ ev_prepare *w, int revents) 1722pendingcb (EV_P_ ev_prepare *w, int revents)
1028{ 1723{
1029} 1724}
1030 1725
1031void noinline 1726void noinline
1032ev_feed_event (EV_P_ void *w, int revents) 1727ev_feed_event (EV_P_ void *w, int revents) EV_THROW
1033{ 1728{
1034 W w_ = (W)w; 1729 W w_ = (W)w;
1035 int pri = ABSPRI (w_); 1730 int pri = ABSPRI (w_);
1036 1731
1037 if (expect_false (w_->pending)) 1732 if (expect_false (w_->pending))
… …
1041 w_->pending = ++pendingcnt [pri]; 1736 w_->pending = ++pendingcnt [pri];
1042 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 1737 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
1043 pendings [pri][w_->pending - 1].w = w_; 1738 pendings [pri][w_->pending - 1].w = w_;
1044 pendings [pri][w_->pending - 1].events = revents; 1739 pendings [pri][w_->pending - 1].events = revents;
1045 } 1740 }
1741
1742 pendingpri = NUMPRI - 1;
1046} 1743}
1047 1744
1048inline_speed void 1745inline_speed void
1049feed_reverse (EV_P_ W w) 1746feed_reverse (EV_P_ W w)
1050{ 1747{
… …
1096 if (expect_true (!anfd->reify)) 1793 if (expect_true (!anfd->reify))
1097 fd_event_nocheck (EV_A_ fd, revents); 1794 fd_event_nocheck (EV_A_ fd, revents);
1098} 1795}
1099 1796
1100void 1797void
1101ev_feed_fd_event (EV_P_ int fd, int revents) 1798ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW
1102{ 1799{
1103 if (fd >= 0 && fd < anfdmax) 1800 if (fd >= 0 && fd < anfdmax)
1104 fd_event_nocheck (EV_A_ fd, revents); 1801 fd_event_nocheck (EV_A_ fd, revents);
1105} 1802}
1106 1803
… …
1425static void noinline ecb_cold 2122static void noinline ecb_cold
1426evpipe_init (EV_P) 2123evpipe_init (EV_P)
1427{ 2124{
1428 if (!ev_is_active (&pipe_w)) 2125 if (!ev_is_active (&pipe_w))
1429 { 2126 {
2127 int fds [2];
2128
1430# if EV_USE_EVENTFD 2129# if EV_USE_EVENTFD
2130 fds [0] = -1;
1431 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2131 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1432 if (evfd < 0 && errno == EINVAL) 2132 if (fds [1] < 0 && errno == EINVAL)
1433 evfd = eventfd (0, 0); 2133 fds [1] = eventfd (0, 0);
1434 2134
1435 if (evfd >= 0) 2135 if (fds [1] < 0)
2136# endif
1436 { 2137 {
2138 while (pipe (fds))
2139 ev_syserr ("(libev) error creating signal/async pipe");
2140
2141 fd_intern (fds [0]);
2142 }
2143
1437 evpipe [0] = -1; 2144 evpipe [0] = fds [0];
1438 fd_intern (evfd); /* doing it twice doesn't hurt */ 2145
1439 ev_io_set (&pipe_w, evfd, EV_READ); 2146 if (evpipe [1] < 0)
2147 evpipe [1] = fds [1]; /* first call, set write fd */
2148 else
2149 {
2150 /* on subsequent calls, do not change evpipe [1] */
2151 /* so that evpipe_write can always rely on its value. */
2152 /* this branch does not do anything sensible on windows, */
2153 /* so must not be executed on windows */
2154
2155 dup2 (fds [1], evpipe [1]);
2156 close (fds [1]);
2157 }
2158
2159 fd_intern (evpipe [1]);
2160
2161 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2162 ev_io_start (EV_A_ &pipe_w);
2163 ev_unref (EV_A); /* watcher should not keep loop alive */
2164 }
2165}
2166
2167inline_speed void
2168evpipe_write (EV_P_ EV_ATOMIC_T *flag)
2169{
2170 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
2171
2172 if (expect_true (*flag))
2173 return;
2174
2175 *flag = 1;
2176 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2177
2178 pipe_write_skipped = 1;
2179
2180 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2181
2182 if (pipe_write_wanted)
2183 {
2184 int old_errno;
2185
2186 pipe_write_skipped = 0;
2187 ECB_MEMORY_FENCE_RELEASE;
2188
2189 old_errno = errno; /* save errno because write will clobber it */
2190
2191#if EV_USE_EVENTFD
2192 if (evpipe [0] < 0)
2193 {
2194 uint64_t counter = 1;
2195 write (evpipe [1], &counter, sizeof (uint64_t));
1440 } 2196 }
1441 else 2197 else
1442# endif 2198#endif
1443 { 2199 {
1444 while (pipe (evpipe)) 2200#ifdef _WIN32
1445 ev_syserr ("(libev) error creating signal/async pipe"); 2201 WSABUF buf;
1446 2202 DWORD sent;
1447 fd_intern (evpipe [0]); 2203 buf.buf = &buf;
1448 fd_intern (evpipe [1]); 2204 buf.len = 1;
1449 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2205 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
1450 } 2206#else
1451
1452 ev_io_start (EV_A_ &pipe_w);
1453 ev_unref (EV_A); /* watcher should not keep loop alive */
1454 }
1455}
1456
1457inline_speed void
1458evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1459{
1460 if (expect_true (*flag))
1461 /*return*//*D*/;
1462
1463 *flag = 1;
1464
1465 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1466
1467 pipe_write_skipped = 1;
1468
1469 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1470
1471 if (pipe_write_wanted)
1472 {
1473 int old_errno;
1474
1475 pipe_write_skipped = 0; /* just an optimsiation, no fence needed */
1476
1477 old_errno = errno; /* save errno because write will clobber it */
1478
1479#if EV_USE_EVENTFD
1480 if (evfd >= 0)
1481 {
1482 uint64_t counter = 1;
1483 write (evfd, &counter, sizeof (uint64_t));
1484 }
1485 else
1486#endif
1487 {
1488 /* win32 people keep sending patches that change this write() to send() */
1489 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1490 /* so when you think this write should be a send instead, please find out */
1491 /* where your send() is from - it's definitely not the microsoft send, and */
1492 /* tell me. thank you. */
1493 write (evpipe [1], &(evpipe [1]), 1); 2207 write (evpipe [1], &(evpipe [1]), 1);
2208#endif
1494 } 2209 }
1495 2210
1496 errno = old_errno; 2211 errno = old_errno;
1497 } 2212 }
1498} 2213}
… …
1505 int i; 2220 int i;
1506 2221
1507 if (revents & EV_READ) 2222 if (revents & EV_READ)
1508 { 2223 {
1509#if EV_USE_EVENTFD 2224#if EV_USE_EVENTFD
1510 if (evfd >= 0) 2225 if (evpipe [0] < 0)
1511 { 2226 {
1512 uint64_t counter; 2227 uint64_t counter;
1513 read (evfd, &counter, sizeof (uint64_t)); 2228 read (evpipe [1], &counter, sizeof (uint64_t));
1514 } 2229 }
1515 else 2230 else
1516#endif 2231#endif
1517 { 2232 {
1518 char dummy; 2233 char dummy[4];
1519 /* see discussion in evpipe_write when you think this read should be recv in win32 */ 2234#ifdef _WIN32
2235 WSABUF buf;
2236 DWORD recvd;
2237 DWORD flags = 0;
2238 buf.buf = dummy;
2239 buf.len = sizeof (dummy);
2240 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2241#else
1520 read (evpipe [0], &dummy, 1); 2242 read (evpipe [0], &dummy, sizeof (dummy));
2243#endif
1521 } 2244 }
1522 } 2245 }
1523 2246
1524 pipe_write_skipped = 0; 2247 pipe_write_skipped = 0;
2248
2249 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
1525 2250
1526#if EV_SIGNAL_ENABLE 2251#if EV_SIGNAL_ENABLE
1527 if (sig_pending) 2252 if (sig_pending)
1528 { 2253 {
1529 sig_pending = 0; 2254 sig_pending = 0;
2255
2256 ECB_MEMORY_FENCE;
1530 2257
1531 for (i = EV_NSIG - 1; i--; ) 2258 for (i = EV_NSIG - 1; i--; )
1532 if (expect_false (signals [i].pending)) 2259 if (expect_false (signals [i].pending))
1533 ev_feed_signal_event (EV_A_ i + 1); 2260 ev_feed_signal_event (EV_A_ i + 1);
1534 } 2261 }
… …
1536 2263
1537#if EV_ASYNC_ENABLE 2264#if EV_ASYNC_ENABLE
1538 if (async_pending) 2265 if (async_pending)
1539 { 2266 {
1540 async_pending = 0; 2267 async_pending = 0;
2268
2269 ECB_MEMORY_FENCE;
1541 2270
1542 for (i = asynccnt; i--; ) 2271 for (i = asynccnt; i--; )
1543 if (asyncs [i]->sent) 2272 if (asyncs [i]->sent)
1544 { 2273 {
1545 asyncs [i]->sent = 0; 2274 asyncs [i]->sent = 0;
2275 ECB_MEMORY_FENCE_RELEASE;
1546 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2276 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1547 } 2277 }
1548 } 2278 }
1549#endif 2279#endif
1550} 2280}
1551 2281
1552/*****************************************************************************/ 2282/*****************************************************************************/
1553 2283
1554void 2284void
1555ev_feed_signal (int signum) 2285ev_feed_signal (int signum) EV_THROW
1556{ 2286{
1557#if EV_MULTIPLICITY 2287#if EV_MULTIPLICITY
2288 EV_P;
2289 ECB_MEMORY_FENCE_ACQUIRE;
1558 EV_P = signals [signum - 1].loop; 2290 EV_A = signals [signum - 1].loop;
1559 2291
1560 if (!EV_A) 2292 if (!EV_A)
1561 return; 2293 return;
1562#endif 2294#endif
1563 2295
1564 if (!ev_active (&pipe_w))
1565 return;
1566
1567 signals [signum - 1].pending = 1; 2296 signals [signum - 1].pending = 1;
1568 evpipe_write (EV_A_ &sig_pending); 2297 evpipe_write (EV_A_ &sig_pending);
1569} 2298}
1570 2299
1571static void 2300static void
… …
1577 2306
1578 ev_feed_signal (signum); 2307 ev_feed_signal (signum);
1579} 2308}
1580 2309
1581void noinline 2310void noinline
1582ev_feed_signal_event (EV_P_ int signum) 2311ev_feed_signal_event (EV_P_ int signum) EV_THROW
1583{ 2312{
1584 WL w; 2313 WL w;
1585 2314
1586 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2315 if (expect_false (signum <= 0 || signum >= EV_NSIG))
1587 return; 2316 return;
1588 2317
1589 --signum; 2318 --signum;
1590 2319
1591#if EV_MULTIPLICITY 2320#if EV_MULTIPLICITY
… …
1595 if (expect_false (signals [signum].loop != EV_A)) 2324 if (expect_false (signals [signum].loop != EV_A))
1596 return; 2325 return;
1597#endif 2326#endif
1598 2327
1599 signals [signum].pending = 0; 2328 signals [signum].pending = 0;
2329 ECB_MEMORY_FENCE_RELEASE;
1600 2330
1601 for (w = signals [signum].head; w; w = w->next) 2331 for (w = signals [signum].head; w; w = w->next)
1602 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2332 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1603} 2333}
1604 2334
… …
1703#if EV_USE_SELECT 2433#if EV_USE_SELECT
1704# include "ev_select.c" 2434# include "ev_select.c"
1705#endif 2435#endif
1706 2436
1707int ecb_cold 2437int ecb_cold
1708ev_version_major (void) 2438ev_version_major (void) EV_THROW
1709{ 2439{
1710 return EV_VERSION_MAJOR; 2440 return EV_VERSION_MAJOR;
1711} 2441}
1712 2442
1713int ecb_cold 2443int ecb_cold
1714ev_version_minor (void) 2444ev_version_minor (void) EV_THROW
1715{ 2445{
1716 return EV_VERSION_MINOR; 2446 return EV_VERSION_MINOR;
1717} 2447}
1718 2448
1719/* return true if we are running with elevated privileges and should ignore env variables */ 2449/* return true if we are running with elevated privileges and should ignore env variables */
… …
1727 || getgid () != getegid (); 2457 || getgid () != getegid ();
1728#endif 2458#endif
1729} 2459}
1730 2460
1731unsigned int ecb_cold 2461unsigned int ecb_cold
1732ev_supported_backends (void) 2462ev_supported_backends (void) EV_THROW
1733{ 2463{
1734 unsigned int flags = 0; 2464 unsigned int flags = 0;
1735 2465
1736 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2466 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1737 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2467 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
… …
1741 2471
1742 return flags; 2472 return flags;
1743} 2473}
1744 2474
1745unsigned int ecb_cold 2475unsigned int ecb_cold
1746ev_recommended_backends (void) 2476ev_recommended_backends (void) EV_THROW
1747{ 2477{
1748 unsigned int flags = ev_supported_backends (); 2478 unsigned int flags = ev_supported_backends ();
1749 2479
1750#ifndef __NetBSD__ 2480#ifndef __NetBSD__
1751 /* kqueue is borked on everything but netbsd apparently */ 2481 /* kqueue is borked on everything but netbsd apparently */
… …
1763 2493
1764 return flags; 2494 return flags;
1765} 2495}
1766 2496
1767unsigned int ecb_cold 2497unsigned int ecb_cold
1768ev_embeddable_backends (void) 2498ev_embeddable_backends (void) EV_THROW
1769{ 2499{
1770 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2500 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1771 2501
1772 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2502 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1773 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */ 2503 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
… …
1775 2505
1776 return flags; 2506 return flags;
1777} 2507}
1778 2508
1779unsigned int 2509unsigned int
1780ev_backend (EV_P) 2510ev_backend (EV_P) EV_THROW
1781{ 2511{
1782 return backend; 2512 return backend;
1783} 2513}
1784 2514
1785#if EV_FEATURE_API 2515#if EV_FEATURE_API
1786unsigned int 2516unsigned int
1787ev_iteration (EV_P) 2517ev_iteration (EV_P) EV_THROW
1788{ 2518{
1789 return loop_count; 2519 return loop_count;
1790} 2520}
1791 2521
1792unsigned int 2522unsigned int
1793ev_depth (EV_P) 2523ev_depth (EV_P) EV_THROW
1794{ 2524{
1795 return loop_depth; 2525 return loop_depth;
1796} 2526}
1797 2527
1798void 2528void
1799ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2529ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1800{ 2530{
1801 io_blocktime = interval; 2531 io_blocktime = interval;
1802} 2532}
1803 2533
1804void 2534void
1805ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2535ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1806{ 2536{
1807 timeout_blocktime = interval; 2537 timeout_blocktime = interval;
1808} 2538}
1809 2539
1810void 2540void
1811ev_set_userdata (EV_P_ void *data) 2541ev_set_userdata (EV_P_ void *data) EV_THROW
1812{ 2542{
1813 userdata = data; 2543 userdata = data;
1814} 2544}
1815 2545
1816void * 2546void *
1817ev_userdata (EV_P) 2547ev_userdata (EV_P) EV_THROW
1818{ 2548{
1819 return userdata; 2549 return userdata;
1820} 2550}
1821 2551
1822void 2552void
1823ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2553ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) EV_THROW
1824{ 2554{
1825 invoke_cb = invoke_pending_cb; 2555 invoke_cb = invoke_pending_cb;
1826} 2556}
1827 2557
1828void 2558void
1829ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2559ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_THROW, void (*acquire)(EV_P) EV_THROW) EV_THROW
1830{ 2560{
1831 release_cb = release; 2561 release_cb = release;
1832 acquire_cb = acquire; 2562 acquire_cb = acquire;
1833} 2563}
1834#endif 2564#endif
1835 2565
1836/* initialise a loop structure, must be zero-initialised */ 2566/* initialise a loop structure, must be zero-initialised */
1837static void noinline ecb_cold 2567static void noinline ecb_cold
1838loop_init (EV_P_ unsigned int flags) 2568loop_init (EV_P_ unsigned int flags) EV_THROW
1839{ 2569{
1840 if (!backend) 2570 if (!backend)
1841 { 2571 {
1842 origflags = flags; 2572 origflags = flags;
1843 2573
… …
1888#if EV_ASYNC_ENABLE 2618#if EV_ASYNC_ENABLE
1889 async_pending = 0; 2619 async_pending = 0;
1890#endif 2620#endif
1891 pipe_write_skipped = 0; 2621 pipe_write_skipped = 0;
1892 pipe_write_wanted = 0; 2622 pipe_write_wanted = 0;
2623 evpipe [0] = -1;
2624 evpipe [1] = -1;
1893#if EV_USE_INOTIFY 2625#if EV_USE_INOTIFY
1894 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 2626 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1895#endif 2627#endif
1896#if EV_USE_SIGNALFD 2628#if EV_USE_SIGNALFD
1897 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 2629 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
… …
1948 EV_INVOKE_PENDING; 2680 EV_INVOKE_PENDING;
1949 } 2681 }
1950#endif 2682#endif
1951 2683
1952#if EV_CHILD_ENABLE 2684#if EV_CHILD_ENABLE
1953 if (ev_is_active (&childev)) 2685 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
1954 { 2686 {
1955 ev_ref (EV_A); /* child watcher */ 2687 ev_ref (EV_A); /* child watcher */
1956 ev_signal_stop (EV_A_ &childev); 2688 ev_signal_stop (EV_A_ &childev);
1957 } 2689 }
1958#endif 2690#endif
… …
1960 if (ev_is_active (&pipe_w)) 2692 if (ev_is_active (&pipe_w))
1961 { 2693 {
1962 /*ev_ref (EV_A);*/ 2694 /*ev_ref (EV_A);*/
1963 /*ev_io_stop (EV_A_ &pipe_w);*/ 2695 /*ev_io_stop (EV_A_ &pipe_w);*/
1964 2696
1965#if EV_USE_EVENTFD
1966 if (evfd >= 0)
1967 close (evfd);
1968#endif
1969
1970 if (evpipe [0] >= 0)
1971 {
1972 EV_WIN32_CLOSE_FD (evpipe [0]); 2697 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
1973 EV_WIN32_CLOSE_FD (evpipe [1]); 2698 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
1974 }
1975 } 2699 }
1976 2700
1977#if EV_USE_SIGNALFD 2701#if EV_USE_SIGNALFD
1978 if (ev_is_active (&sigfd_w)) 2702 if (ev_is_active (&sigfd_w))
1979 close (sigfd); 2703 close (sigfd);
… …
2065#endif 2789#endif
2066#if EV_USE_INOTIFY 2790#if EV_USE_INOTIFY
2067 infy_fork (EV_A); 2791 infy_fork (EV_A);
2068#endif 2792#endif
2069 2793
2794#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2070 if (ev_is_active (&pipe_w)) 2795 if (ev_is_active (&pipe_w))
2071 { 2796 {
2072 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */ 2797 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
2073 2798
2074 ev_ref (EV_A); 2799 ev_ref (EV_A);
2075 ev_io_stop (EV_A_ &pipe_w); 2800 ev_io_stop (EV_A_ &pipe_w);
2076 2801
2077#if EV_USE_EVENTFD
2078 if (evfd >= 0)
2079 close (evfd);
2080#endif
2081
2082 if (evpipe [0] >= 0) 2802 if (evpipe [0] >= 0)
2083 {
2084 EV_WIN32_CLOSE_FD (evpipe [0]); 2803 EV_WIN32_CLOSE_FD (evpipe [0]);
2085 EV_WIN32_CLOSE_FD (evpipe [1]);
2086 }
2087 2804
2088#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2089 evpipe_init (EV_A); 2805 evpipe_init (EV_A);
2090 /* now iterate over everything, in case we missed something */ 2806 /* iterate over everything, in case we missed something before */
2091 pipecb (EV_A_ &pipe_w, EV_READ); 2807 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2092#endif
2093 } 2808 }
2809#endif
2094 2810
2095 postfork = 0; 2811 postfork = 0;
2096} 2812}
2097 2813
2098#if EV_MULTIPLICITY 2814#if EV_MULTIPLICITY
2099 2815
2100struct ev_loop * ecb_cold 2816struct ev_loop * ecb_cold
2101ev_loop_new (unsigned int flags) 2817ev_loop_new (unsigned int flags) EV_THROW
2102{ 2818{
2103 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2819 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
2104 2820
2105 memset (EV_A, 0, sizeof (struct ev_loop)); 2821 memset (EV_A, 0, sizeof (struct ev_loop));
2106 loop_init (EV_A_ flags); 2822 loop_init (EV_A_ flags);
… …
2150} 2866}
2151#endif 2867#endif
2152 2868
2153#if EV_FEATURE_API 2869#if EV_FEATURE_API
2154void ecb_cold 2870void ecb_cold
2155ev_verify (EV_P) 2871ev_verify (EV_P) EV_THROW
2156{ 2872{
2157#if EV_VERIFY 2873#if EV_VERIFY
2158 int i; 2874 int i;
2159 WL w; 2875 WL w, w2;
2160 2876
2161 assert (activecnt >= -1); 2877 assert (activecnt >= -1);
2162 2878
2163 assert (fdchangemax >= fdchangecnt); 2879 assert (fdchangemax >= fdchangecnt);
2164 for (i = 0; i < fdchangecnt; ++i) 2880 for (i = 0; i < fdchangecnt; ++i)
2165 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 2881 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
2166 2882
2167 assert (anfdmax >= 0); 2883 assert (anfdmax >= 0);
2168 for (i = 0; i < anfdmax; ++i) 2884 for (i = 0; i < anfdmax; ++i)
2885 {
2886 int j = 0;
2887
2169 for (w = anfds [i].head; w; w = w->next) 2888 for (w = w2 = anfds [i].head; w; w = w->next)
2170 { 2889 {
2171 verify_watcher (EV_A_ (W)w); 2890 verify_watcher (EV_A_ (W)w);
2891
2892 if (j++ & 1)
2893 {
2894 assert (("libev: io watcher list contains a loop", w != w2));
2895 w2 = w2->next;
2896 }
2897
2172 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 2898 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
2173 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 2899 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
2174 } 2900 }
2901 }
2175 2902
2176 assert (timermax >= timercnt); 2903 assert (timermax >= timercnt);
2177 verify_heap (EV_A_ timers, timercnt); 2904 verify_heap (EV_A_ timers, timercnt);
2178 2905
2179#if EV_PERIODIC_ENABLE 2906#if EV_PERIODIC_ENABLE
… …
2229#if EV_MULTIPLICITY 2956#if EV_MULTIPLICITY
2230struct ev_loop * ecb_cold 2957struct ev_loop * ecb_cold
2231#else 2958#else
2232int 2959int
2233#endif 2960#endif
2234ev_default_loop (unsigned int flags) 2961ev_default_loop (unsigned int flags) EV_THROW
2235{ 2962{
2236 if (!ev_default_loop_ptr) 2963 if (!ev_default_loop_ptr)
2237 { 2964 {
2238#if EV_MULTIPLICITY 2965#if EV_MULTIPLICITY
2239 EV_P = ev_default_loop_ptr = &default_loop_struct; 2966 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
2258 2985
2259 return ev_default_loop_ptr; 2986 return ev_default_loop_ptr;
2260} 2987}
2261 2988
2262void 2989void
2263ev_loop_fork (EV_P) 2990ev_loop_fork (EV_P) EV_THROW
2264{ 2991{
2265 postfork = 1; /* must be in line with ev_default_fork */ 2992 postfork = 1;
2266} 2993}
2267 2994
2268/*****************************************************************************/ 2995/*****************************************************************************/
2269 2996
2270void 2997void
… …
2272{ 2999{
2273 EV_CB_INVOKE ((W)w, revents); 3000 EV_CB_INVOKE ((W)w, revents);
2274} 3001}
2275 3002
2276unsigned int 3003unsigned int
2277ev_pending_count (EV_P) 3004ev_pending_count (EV_P) EV_THROW
2278{ 3005{
2279 int pri; 3006 int pri;
2280 unsigned int count = 0; 3007 unsigned int count = 0;
2281 3008
2282 for (pri = NUMPRI; pri--; ) 3009 for (pri = NUMPRI; pri--; )
… …
2286} 3013}
2287 3014
2288void noinline 3015void noinline
2289ev_invoke_pending (EV_P) 3016ev_invoke_pending (EV_P)
2290{ 3017{
2291 int pri; 3018 pendingpri = NUMPRI;
2292 3019
2293 for (pri = NUMPRI; pri--; ) 3020 while (pendingpri) /* pendingpri possibly gets modified in the inner loop */
3021 {
3022 --pendingpri;
3023
2294 while (pendingcnt [pri]) 3024 while (pendingcnt [pendingpri])
2295 { 3025 {
2296 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3026 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2297 3027
2298 p->w->pending = 0; 3028 p->w->pending = 0;
2299 EV_CB_INVOKE (p->w, p->events); 3029 EV_CB_INVOKE (p->w, p->events);
2300 EV_FREQUENT_CHECK; 3030 EV_FREQUENT_CHECK;
2301 } 3031 }
3032 }
2302} 3033}
2303 3034
2304#if EV_IDLE_ENABLE 3035#if EV_IDLE_ENABLE
2305/* make idle watchers pending. this handles the "call-idle */ 3036/* make idle watchers pending. this handles the "call-idle */
2306/* only when higher priorities are idle" logic */ 3037/* only when higher priorities are idle" logic */
… …
2396{ 3127{
2397 EV_FREQUENT_CHECK; 3128 EV_FREQUENT_CHECK;
2398 3129
2399 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3130 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2400 { 3131 {
2401 int feed_count = 0;
2402
2403 do 3132 do
2404 { 3133 {
2405 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3134 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2406 3135
2407 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3136 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
2541 3270
2542 mn_now = ev_rt_now; 3271 mn_now = ev_rt_now;
2543 } 3272 }
2544} 3273}
2545 3274
2546void 3275int
2547ev_run (EV_P_ int flags) 3276ev_run (EV_P_ int flags)
2548{ 3277{
2549#if EV_FEATURE_API 3278#if EV_FEATURE_API
2550 ++loop_depth; 3279 ++loop_depth;
2551#endif 3280#endif
… …
2612 time_update (EV_A_ 1e100); 3341 time_update (EV_A_ 1e100);
2613 3342
2614 /* from now on, we want a pipe-wake-up */ 3343 /* from now on, we want a pipe-wake-up */
2615 pipe_write_wanted = 1; 3344 pipe_write_wanted = 1;
2616 3345
2617 ECB_MEMORY_FENCE; /* amke sure pipe_write_wanted is visible before we check for potential skips */ 3346 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
2618 3347
2619 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped))) 3348 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2620 { 3349 {
2621 waittime = MAX_BLOCKTIME; 3350 waittime = MAX_BLOCKTIME;
2622 3351
… …
2664#endif 3393#endif
2665 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */ 3394 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2666 backend_poll (EV_A_ waittime); 3395 backend_poll (EV_A_ waittime);
2667 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */ 3396 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2668 3397
2669 pipe_write_wanted = 0; /* just an optimsiation, no fence needed */ 3398 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
2670 3399
3400 ECB_MEMORY_FENCE_ACQUIRE;
2671 if (pipe_write_skipped) 3401 if (pipe_write_skipped)
2672 { 3402 {
2673 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w))); 3403 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
2674 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); 3404 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2675 } 3405 }
… …
2708 loop_done = EVBREAK_CANCEL; 3438 loop_done = EVBREAK_CANCEL;
2709 3439
2710#if EV_FEATURE_API 3440#if EV_FEATURE_API
2711 --loop_depth; 3441 --loop_depth;
2712#endif 3442#endif
3443
3444 return activecnt;
2713} 3445}
2714 3446
2715void 3447void
2716ev_break (EV_P_ int how) 3448ev_break (EV_P_ int how) EV_THROW
2717{ 3449{
2718 loop_done = how; 3450 loop_done = how;
2719} 3451}
2720 3452
2721void 3453void
2722ev_ref (EV_P) 3454ev_ref (EV_P) EV_THROW
2723{ 3455{
2724 ++activecnt; 3456 ++activecnt;
2725} 3457}
2726 3458
2727void 3459void
2728ev_unref (EV_P) 3460ev_unref (EV_P) EV_THROW
2729{ 3461{
2730 --activecnt; 3462 --activecnt;
2731} 3463}
2732 3464
2733void 3465void
2734ev_now_update (EV_P) 3466ev_now_update (EV_P) EV_THROW
2735{ 3467{
2736 time_update (EV_A_ 1e100); 3468 time_update (EV_A_ 1e100);
2737} 3469}
2738 3470
2739void 3471void
2740ev_suspend (EV_P) 3472ev_suspend (EV_P) EV_THROW
2741{ 3473{
2742 ev_now_update (EV_A); 3474 ev_now_update (EV_A);
2743} 3475}
2744 3476
2745void 3477void
2746ev_resume (EV_P) 3478ev_resume (EV_P) EV_THROW
2747{ 3479{
2748 ev_tstamp mn_prev = mn_now; 3480 ev_tstamp mn_prev = mn_now;
2749 3481
2750 ev_now_update (EV_A); 3482 ev_now_update (EV_A);
2751 timers_reschedule (EV_A_ mn_now - mn_prev); 3483 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2790 w->pending = 0; 3522 w->pending = 0;
2791 } 3523 }
2792} 3524}
2793 3525
2794int 3526int
2795ev_clear_pending (EV_P_ void *w) 3527ev_clear_pending (EV_P_ void *w) EV_THROW
2796{ 3528{
2797 W w_ = (W)w; 3529 W w_ = (W)w;
2798 int pending = w_->pending; 3530 int pending = w_->pending;
2799 3531
2800 if (expect_true (pending)) 3532 if (expect_true (pending))
… …
2833} 3565}
2834 3566
2835/*****************************************************************************/ 3567/*****************************************************************************/
2836 3568
2837void noinline 3569void noinline
2838ev_io_start (EV_P_ ev_io *w) 3570ev_io_start (EV_P_ ev_io *w) EV_THROW
2839{ 3571{
2840 int fd = w->fd; 3572 int fd = w->fd;
2841 3573
2842 if (expect_false (ev_is_active (w))) 3574 if (expect_false (ev_is_active (w)))
2843 return; 3575 return;
… …
2849 3581
2850 ev_start (EV_A_ (W)w, 1); 3582 ev_start (EV_A_ (W)w, 1);
2851 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3583 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2852 wlist_add (&anfds[fd].head, (WL)w); 3584 wlist_add (&anfds[fd].head, (WL)w);
2853 3585
3586 /* common bug, apparently */
3587 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3588
2854 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 3589 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2855 w->events &= ~EV__IOFDSET; 3590 w->events &= ~EV__IOFDSET;
2856 3591
2857 EV_FREQUENT_CHECK; 3592 EV_FREQUENT_CHECK;
2858} 3593}
2859 3594
2860void noinline 3595void noinline
2861ev_io_stop (EV_P_ ev_io *w) 3596ev_io_stop (EV_P_ ev_io *w) EV_THROW
2862{ 3597{
2863 clear_pending (EV_A_ (W)w); 3598 clear_pending (EV_A_ (W)w);
2864 if (expect_false (!ev_is_active (w))) 3599 if (expect_false (!ev_is_active (w)))
2865 return; 3600 return;
2866 3601
… …
2875 3610
2876 EV_FREQUENT_CHECK; 3611 EV_FREQUENT_CHECK;
2877} 3612}
2878 3613
2879void noinline 3614void noinline
2880ev_timer_start (EV_P_ ev_timer *w) 3615ev_timer_start (EV_P_ ev_timer *w) EV_THROW
2881{ 3616{
2882 if (expect_false (ev_is_active (w))) 3617 if (expect_false (ev_is_active (w)))
2883 return; 3618 return;
2884 3619
2885 ev_at (w) += mn_now; 3620 ev_at (w) += mn_now;
… …
2899 3634
2900 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3635 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2901} 3636}
2902 3637
2903void noinline 3638void noinline
2904ev_timer_stop (EV_P_ ev_timer *w) 3639ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
2905{ 3640{
2906 clear_pending (EV_A_ (W)w); 3641 clear_pending (EV_A_ (W)w);
2907 if (expect_false (!ev_is_active (w))) 3642 if (expect_false (!ev_is_active (w)))
2908 return; 3643 return;
2909 3644
… …
2929 3664
2930 EV_FREQUENT_CHECK; 3665 EV_FREQUENT_CHECK;
2931} 3666}
2932 3667
2933void noinline 3668void noinline
2934ev_timer_again (EV_P_ ev_timer *w) 3669ev_timer_again (EV_P_ ev_timer *w) EV_THROW
2935{ 3670{
2936 EV_FREQUENT_CHECK; 3671 EV_FREQUENT_CHECK;
3672
3673 clear_pending (EV_A_ (W)w);
2937 3674
2938 if (ev_is_active (w)) 3675 if (ev_is_active (w))
2939 { 3676 {
2940 if (w->repeat) 3677 if (w->repeat)
2941 { 3678 {
… …
2954 3691
2955 EV_FREQUENT_CHECK; 3692 EV_FREQUENT_CHECK;
2956} 3693}
2957 3694
2958ev_tstamp 3695ev_tstamp
2959ev_timer_remaining (EV_P_ ev_timer *w) 3696ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW
2960{ 3697{
2961 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 3698 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2962} 3699}
2963 3700
2964#if EV_PERIODIC_ENABLE 3701#if EV_PERIODIC_ENABLE
2965void noinline 3702void noinline
2966ev_periodic_start (EV_P_ ev_periodic *w) 3703ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
2967{ 3704{
2968 if (expect_false (ev_is_active (w))) 3705 if (expect_false (ev_is_active (w)))
2969 return; 3706 return;
2970 3707
2971 if (w->reschedule_cb) 3708 if (w->reschedule_cb)
… …
2991 3728
2992 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 3729 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2993} 3730}
2994 3731
2995void noinline 3732void noinline
2996ev_periodic_stop (EV_P_ ev_periodic *w) 3733ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
2997{ 3734{
2998 clear_pending (EV_A_ (W)w); 3735 clear_pending (EV_A_ (W)w);
2999 if (expect_false (!ev_is_active (w))) 3736 if (expect_false (!ev_is_active (w)))
3000 return; 3737 return;
3001 3738
… …
3019 3756
3020 EV_FREQUENT_CHECK; 3757 EV_FREQUENT_CHECK;
3021} 3758}
3022 3759
3023void noinline 3760void noinline
3024ev_periodic_again (EV_P_ ev_periodic *w) 3761ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
3025{ 3762{
3026 /* TODO: use adjustheap and recalculation */ 3763 /* TODO: use adjustheap and recalculation */
3027 ev_periodic_stop (EV_A_ w); 3764 ev_periodic_stop (EV_A_ w);
3028 ev_periodic_start (EV_A_ w); 3765 ev_periodic_start (EV_A_ w);
3029} 3766}
… …
3034#endif 3771#endif
3035 3772
3036#if EV_SIGNAL_ENABLE 3773#if EV_SIGNAL_ENABLE
3037 3774
3038void noinline 3775void noinline
3039ev_signal_start (EV_P_ ev_signal *w) 3776ev_signal_start (EV_P_ ev_signal *w) EV_THROW
3040{ 3777{
3041 if (expect_false (ev_is_active (w))) 3778 if (expect_false (ev_is_active (w)))
3042 return; 3779 return;
3043 3780
3044 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 3781 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
… …
3046#if EV_MULTIPLICITY 3783#if EV_MULTIPLICITY
3047 assert (("libev: a signal must not be attached to two different loops", 3784 assert (("libev: a signal must not be attached to two different loops",
3048 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 3785 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
3049 3786
3050 signals [w->signum - 1].loop = EV_A; 3787 signals [w->signum - 1].loop = EV_A;
3788 ECB_MEMORY_FENCE_RELEASE;
3051#endif 3789#endif
3052 3790
3053 EV_FREQUENT_CHECK; 3791 EV_FREQUENT_CHECK;
3054 3792
3055#if EV_USE_SIGNALFD 3793#if EV_USE_SIGNALFD
… …
3115 3853
3116 EV_FREQUENT_CHECK; 3854 EV_FREQUENT_CHECK;
3117} 3855}
3118 3856
3119void noinline 3857void noinline
3120ev_signal_stop (EV_P_ ev_signal *w) 3858ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
3121{ 3859{
3122 clear_pending (EV_A_ (W)w); 3860 clear_pending (EV_A_ (W)w);
3123 if (expect_false (!ev_is_active (w))) 3861 if (expect_false (!ev_is_active (w)))
3124 return; 3862 return;
3125 3863
… …
3156#endif 3894#endif
3157 3895
3158#if EV_CHILD_ENABLE 3896#if EV_CHILD_ENABLE
3159 3897
3160void 3898void
3161ev_child_start (EV_P_ ev_child *w) 3899ev_child_start (EV_P_ ev_child *w) EV_THROW
3162{ 3900{
3163#if EV_MULTIPLICITY 3901#if EV_MULTIPLICITY
3164 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 3902 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
3165#endif 3903#endif
3166 if (expect_false (ev_is_active (w))) 3904 if (expect_false (ev_is_active (w)))
… …
3173 3911
3174 EV_FREQUENT_CHECK; 3912 EV_FREQUENT_CHECK;
3175} 3913}
3176 3914
3177void 3915void
3178ev_child_stop (EV_P_ ev_child *w) 3916ev_child_stop (EV_P_ ev_child *w) EV_THROW
3179{ 3917{
3180 clear_pending (EV_A_ (W)w); 3918 clear_pending (EV_A_ (W)w);
3181 if (expect_false (!ev_is_active (w))) 3919 if (expect_false (!ev_is_active (w)))
3182 return; 3920 return;
3183 3921
… …
3210# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 3948# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
3211 3949
3212static void noinline 3950static void noinline
3213infy_add (EV_P_ ev_stat *w) 3951infy_add (EV_P_ ev_stat *w)
3214{ 3952{
3215 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD); 3953 w->wd = inotify_add_watch (fs_fd, w->path,
3954 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
3955 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
3956 | IN_DONT_FOLLOW | IN_MASK_ADD);
3216 3957
3217 if (w->wd >= 0) 3958 if (w->wd >= 0)
3218 { 3959 {
3219 struct statfs sfs; 3960 struct statfs sfs;
3220 3961
… …
3224 3965
3225 if (!fs_2625) 3966 if (!fs_2625)
3226 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 3967 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3227 else if (!statfs (w->path, &sfs) 3968 else if (!statfs (w->path, &sfs)
3228 && (sfs.f_type == 0x1373 /* devfs */ 3969 && (sfs.f_type == 0x1373 /* devfs */
3970 || sfs.f_type == 0x4006 /* fat */
3971 || sfs.f_type == 0x4d44 /* msdos */
3229 || sfs.f_type == 0xEF53 /* ext2/3 */ 3972 || sfs.f_type == 0xEF53 /* ext2/3 */
3973 || sfs.f_type == 0x72b6 /* jffs2 */
3974 || sfs.f_type == 0x858458f6 /* ramfs */
3975 || sfs.f_type == 0x5346544e /* ntfs */
3230 || sfs.f_type == 0x3153464a /* jfs */ 3976 || sfs.f_type == 0x3153464a /* jfs */
3977 || sfs.f_type == 0x9123683e /* btrfs */
3231 || sfs.f_type == 0x52654973 /* reiser3 */ 3978 || sfs.f_type == 0x52654973 /* reiser3 */
3232 || sfs.f_type == 0x01021994 /* tempfs */ 3979 || sfs.f_type == 0x01021994 /* tmpfs */
3233 || sfs.f_type == 0x58465342 /* xfs */)) 3980 || sfs.f_type == 0x58465342 /* xfs */))
3234 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ 3981 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3235 else 3982 else
3236 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ 3983 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
3237 } 3984 }
… …
3350} 4097}
3351 4098
3352inline_size int 4099inline_size int
3353infy_newfd (void) 4100infy_newfd (void)
3354{ 4101{
3355#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 4102#if defined IN_CLOEXEC && defined IN_NONBLOCK
3356 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 4103 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3357 if (fd >= 0) 4104 if (fd >= 0)
3358 return fd; 4105 return fd;
3359#endif 4106#endif
3360 return inotify_init (); 4107 return inotify_init ();
… …
3435#else 4182#else
3436# define EV_LSTAT(p,b) lstat (p, b) 4183# define EV_LSTAT(p,b) lstat (p, b)
3437#endif 4184#endif
3438 4185
3439void 4186void
3440ev_stat_stat (EV_P_ ev_stat *w) 4187ev_stat_stat (EV_P_ ev_stat *w) EV_THROW
3441{ 4188{
3442 if (lstat (w->path, &w->attr) < 0) 4189 if (lstat (w->path, &w->attr) < 0)
3443 w->attr.st_nlink = 0; 4190 w->attr.st_nlink = 0;
3444 else if (!w->attr.st_nlink) 4191 else if (!w->attr.st_nlink)
3445 w->attr.st_nlink = 1; 4192 w->attr.st_nlink = 1;
… …
3484 ev_feed_event (EV_A_ w, EV_STAT); 4231 ev_feed_event (EV_A_ w, EV_STAT);
3485 } 4232 }
3486} 4233}
3487 4234
3488void 4235void
3489ev_stat_start (EV_P_ ev_stat *w) 4236ev_stat_start (EV_P_ ev_stat *w) EV_THROW
3490{ 4237{
3491 if (expect_false (ev_is_active (w))) 4238 if (expect_false (ev_is_active (w)))
3492 return; 4239 return;
3493 4240
3494 ev_stat_stat (EV_A_ w); 4241 ev_stat_stat (EV_A_ w);
… …
3515 4262
3516 EV_FREQUENT_CHECK; 4263 EV_FREQUENT_CHECK;
3517} 4264}
3518 4265
3519void 4266void
3520ev_stat_stop (EV_P_ ev_stat *w) 4267ev_stat_stop (EV_P_ ev_stat *w) EV_THROW
3521{ 4268{
3522 clear_pending (EV_A_ (W)w); 4269 clear_pending (EV_A_ (W)w);
3523 if (expect_false (!ev_is_active (w))) 4270 if (expect_false (!ev_is_active (w)))
3524 return; 4271 return;
3525 4272
… …
3541} 4288}
3542#endif 4289#endif
3543 4290
3544#if EV_IDLE_ENABLE 4291#if EV_IDLE_ENABLE
3545void 4292void
3546ev_idle_start (EV_P_ ev_idle *w) 4293ev_idle_start (EV_P_ ev_idle *w) EV_THROW
3547{ 4294{
3548 if (expect_false (ev_is_active (w))) 4295 if (expect_false (ev_is_active (w)))
3549 return; 4296 return;
3550 4297
3551 pri_adjust (EV_A_ (W)w); 4298 pri_adjust (EV_A_ (W)w);
… …
3564 4311
3565 EV_FREQUENT_CHECK; 4312 EV_FREQUENT_CHECK;
3566} 4313}
3567 4314
3568void 4315void
3569ev_idle_stop (EV_P_ ev_idle *w) 4316ev_idle_stop (EV_P_ ev_idle *w) EV_THROW
3570{ 4317{
3571 clear_pending (EV_A_ (W)w); 4318 clear_pending (EV_A_ (W)w);
3572 if (expect_false (!ev_is_active (w))) 4319 if (expect_false (!ev_is_active (w)))
3573 return; 4320 return;
3574 4321
… …
3588} 4335}
3589#endif 4336#endif
3590 4337
3591#if EV_PREPARE_ENABLE 4338#if EV_PREPARE_ENABLE
3592void 4339void
3593ev_prepare_start (EV_P_ ev_prepare *w) 4340ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW
3594{ 4341{
3595 if (expect_false (ev_is_active (w))) 4342 if (expect_false (ev_is_active (w)))
3596 return; 4343 return;
3597 4344
3598 EV_FREQUENT_CHECK; 4345 EV_FREQUENT_CHECK;
… …
3603 4350
3604 EV_FREQUENT_CHECK; 4351 EV_FREQUENT_CHECK;
3605} 4352}
3606 4353
3607void 4354void
3608ev_prepare_stop (EV_P_ ev_prepare *w) 4355ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW
3609{ 4356{
3610 clear_pending (EV_A_ (W)w); 4357 clear_pending (EV_A_ (W)w);
3611 if (expect_false (!ev_is_active (w))) 4358 if (expect_false (!ev_is_active (w)))
3612 return; 4359 return;
3613 4360
… …
3626} 4373}
3627#endif 4374#endif
3628 4375
3629#if EV_CHECK_ENABLE 4376#if EV_CHECK_ENABLE
3630void 4377void
3631ev_check_start (EV_P_ ev_check *w) 4378ev_check_start (EV_P_ ev_check *w) EV_THROW
3632{ 4379{
3633 if (expect_false (ev_is_active (w))) 4380 if (expect_false (ev_is_active (w)))
3634 return; 4381 return;
3635 4382
3636 EV_FREQUENT_CHECK; 4383 EV_FREQUENT_CHECK;
… …
3641 4388
3642 EV_FREQUENT_CHECK; 4389 EV_FREQUENT_CHECK;
3643} 4390}
3644 4391
3645void 4392void
3646ev_check_stop (EV_P_ ev_check *w) 4393ev_check_stop (EV_P_ ev_check *w) EV_THROW
3647{ 4394{
3648 clear_pending (EV_A_ (W)w); 4395 clear_pending (EV_A_ (W)w);
3649 if (expect_false (!ev_is_active (w))) 4396 if (expect_false (!ev_is_active (w)))
3650 return; 4397 return;
3651 4398
… …
3664} 4411}
3665#endif 4412#endif
3666 4413
3667#if EV_EMBED_ENABLE 4414#if EV_EMBED_ENABLE
3668void noinline 4415void noinline
3669ev_embed_sweep (EV_P_ ev_embed *w) 4416ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
3670{ 4417{
3671 ev_run (w->other, EVRUN_NOWAIT); 4418 ev_run (w->other, EVRUN_NOWAIT);
3672} 4419}
3673 4420
3674static void 4421static void
… …
3722 ev_idle_stop (EV_A_ idle); 4469 ev_idle_stop (EV_A_ idle);
3723} 4470}
3724#endif 4471#endif
3725 4472
3726void 4473void
3727ev_embed_start (EV_P_ ev_embed *w) 4474ev_embed_start (EV_P_ ev_embed *w) EV_THROW
3728{ 4475{
3729 if (expect_false (ev_is_active (w))) 4476 if (expect_false (ev_is_active (w)))
3730 return; 4477 return;
3731 4478
3732 { 4479 {
… …
3753 4500
3754 EV_FREQUENT_CHECK; 4501 EV_FREQUENT_CHECK;
3755} 4502}
3756 4503
3757void 4504void
3758ev_embed_stop (EV_P_ ev_embed *w) 4505ev_embed_stop (EV_P_ ev_embed *w) EV_THROW
3759{ 4506{
3760 clear_pending (EV_A_ (W)w); 4507 clear_pending (EV_A_ (W)w);
3761 if (expect_false (!ev_is_active (w))) 4508 if (expect_false (!ev_is_active (w)))
3762 return; 4509 return;
3763 4510
… …
3773} 4520}
3774#endif 4521#endif
3775 4522
3776#if EV_FORK_ENABLE 4523#if EV_FORK_ENABLE
3777void 4524void
3778ev_fork_start (EV_P_ ev_fork *w) 4525ev_fork_start (EV_P_ ev_fork *w) EV_THROW
3779{ 4526{
3780 if (expect_false (ev_is_active (w))) 4527 if (expect_false (ev_is_active (w)))
3781 return; 4528 return;
3782 4529
3783 EV_FREQUENT_CHECK; 4530 EV_FREQUENT_CHECK;
… …
3788 4535
3789 EV_FREQUENT_CHECK; 4536 EV_FREQUENT_CHECK;
3790} 4537}
3791 4538
3792void 4539void
3793ev_fork_stop (EV_P_ ev_fork *w) 4540ev_fork_stop (EV_P_ ev_fork *w) EV_THROW
3794{ 4541{
3795 clear_pending (EV_A_ (W)w); 4542 clear_pending (EV_A_ (W)w);
3796 if (expect_false (!ev_is_active (w))) 4543 if (expect_false (!ev_is_active (w)))
3797 return; 4544 return;
3798 4545
… …
3811} 4558}
3812#endif 4559#endif
3813 4560
3814#if EV_CLEANUP_ENABLE 4561#if EV_CLEANUP_ENABLE
3815void 4562void
3816ev_cleanup_start (EV_P_ ev_cleanup *w) 4563ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW
3817{ 4564{
3818 if (expect_false (ev_is_active (w))) 4565 if (expect_false (ev_is_active (w)))
3819 return; 4566 return;
3820 4567
3821 EV_FREQUENT_CHECK; 4568 EV_FREQUENT_CHECK;
… …
3828 ev_unref (EV_A); 4575 ev_unref (EV_A);
3829 EV_FREQUENT_CHECK; 4576 EV_FREQUENT_CHECK;
3830} 4577}
3831 4578
3832void 4579void
3833ev_cleanup_stop (EV_P_ ev_cleanup *w) 4580ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW
3834{ 4581{
3835 clear_pending (EV_A_ (W)w); 4582 clear_pending (EV_A_ (W)w);
3836 if (expect_false (!ev_is_active (w))) 4583 if (expect_false (!ev_is_active (w)))
3837 return; 4584 return;
3838 4585
… …
3852} 4599}
3853#endif 4600#endif
3854 4601
3855#if EV_ASYNC_ENABLE 4602#if EV_ASYNC_ENABLE
3856void 4603void
3857ev_async_start (EV_P_ ev_async *w) 4604ev_async_start (EV_P_ ev_async *w) EV_THROW
3858{ 4605{
3859 if (expect_false (ev_is_active (w))) 4606 if (expect_false (ev_is_active (w)))
3860 return; 4607 return;
3861 4608
3862 w->sent = 0; 4609 w->sent = 0;
… …
3871 4618
3872 EV_FREQUENT_CHECK; 4619 EV_FREQUENT_CHECK;
3873} 4620}
3874 4621
3875void 4622void
3876ev_async_stop (EV_P_ ev_async *w) 4623ev_async_stop (EV_P_ ev_async *w) EV_THROW
3877{ 4624{
3878 clear_pending (EV_A_ (W)w); 4625 clear_pending (EV_A_ (W)w);
3879 if (expect_false (!ev_is_active (w))) 4626 if (expect_false (!ev_is_active (w)))
3880 return; 4627 return;
3881 4628
… …
3892 4639
3893 EV_FREQUENT_CHECK; 4640 EV_FREQUENT_CHECK;
3894} 4641}
3895 4642
3896void 4643void
3897ev_async_send (EV_P_ ev_async *w) 4644ev_async_send (EV_P_ ev_async *w) EV_THROW
3898{ 4645{
3899 w->sent = 1; 4646 w->sent = 1;
3900 evpipe_write (EV_A_ &async_pending); 4647 evpipe_write (EV_A_ &async_pending);
3901} 4648}
3902#endif 4649#endif
… …
3939 4686
3940 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 4687 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3941} 4688}
3942 4689
3943void 4690void
3944ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 4691ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW
3945{ 4692{
3946 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4693 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3947 4694
3948 if (expect_false (!once)) 4695 if (expect_false (!once))
3949 { 4696 {
… …
3971 4718
3972/*****************************************************************************/ 4719/*****************************************************************************/
3973 4720
3974#if EV_WALK_ENABLE 4721#if EV_WALK_ENABLE
3975void ecb_cold 4722void ecb_cold
3976ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 4723ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW
3977{ 4724{
3978 int i, j; 4725 int i, j;
3979 ev_watcher_list *wl, *wn; 4726 ev_watcher_list *wl, *wn;
3980 4727
3981 if (types & (EV_IO | EV_EMBED)) 4728 if (types & (EV_IO | EV_EMBED))
… …
4024 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 4771 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
4025#endif 4772#endif
4026 4773
4027#if EV_IDLE_ENABLE 4774#if EV_IDLE_ENABLE
4028 if (types & EV_IDLE) 4775 if (types & EV_IDLE)
4029 for (j = NUMPRI; i--; ) 4776 for (j = NUMPRI; j--; )
4030 for (i = idlecnt [j]; i--; ) 4777 for (i = idlecnt [j]; i--; )
4031 cb (EV_A_ EV_IDLE, idles [j][i]); 4778 cb (EV_A_ EV_IDLE, idles [j][i]);
4032#endif 4779#endif
4033 4780
4034#if EV_FORK_ENABLE 4781#if EV_FORK_ENABLE
… …
4087 4834
4088#if EV_MULTIPLICITY 4835#if EV_MULTIPLICITY
4089 #include "ev_wrap.h" 4836 #include "ev_wrap.h"
4090#endif 4837#endif
4091 4838
4092EV_CPP(})
4093

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