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Comparing libev/ev.c (file contents):
Revision 1.379 by root, Sun Jun 19 17:55:13 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__
491#elif ECB_C99 733#elif ECB_C99
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
738
739#if ECB_GCC_VERSION(3,3)
740 #define ecb_restrict __restrict__
741#elif ECB_C99
742 #define ecb_restrict restrict
743#else
744 #define ecb_restrict
745#endif
746
747typedef int ecb_bool;
748
749#define ECB_CONCAT_(a, b) a ## b
750#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
751#define ECB_STRINGIFY_(a) # a
752#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
753
754#define ecb_function_ ecb_inline
496 755
497#if ECB_GCC_VERSION(3,1) 756#if ECB_GCC_VERSION(3,1)
498 #define ecb_attribute(attrlist) __attribute__(attrlist) 757 #define ecb_attribute(attrlist) __attribute__(attrlist)
499 #define ecb_is_constant(expr) __builtin_constant_p (expr) 758 #define ecb_is_constant(expr) __builtin_constant_p (expr)
500 #define ecb_expect(expr,value) __builtin_expect ((expr),(value)) 759 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
… …
504 #define ecb_is_constant(expr) 0 763 #define ecb_is_constant(expr) 0
505 #define ecb_expect(expr,value) (expr) 764 #define ecb_expect(expr,value) (expr)
506 #define ecb_prefetch(addr,rw,locality) 765 #define ecb_prefetch(addr,rw,locality)
507#endif 766#endif
508 767
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
509#define ecb_noinline ecb_attribute ((__noinline__)) 775#define ecb_noinline ecb_attribute ((__noinline__))
510#define ecb_noreturn ecb_attribute ((__noreturn__))
511#define ecb_unused ecb_attribute ((__unused__)) 776#define ecb_unused ecb_attribute ((__unused__))
512#define ecb_const ecb_attribute ((__const__)) 777#define ecb_const ecb_attribute ((__const__))
513#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
514 785
515#if ECB_GCC_VERSION(4,3) 786#if ECB_GCC_VERSION(4,3)
516 #define ecb_artificial ecb_attribute ((__artificial__)) 787 #define ecb_artificial ecb_attribute ((__artificial__))
517 #define ecb_hot ecb_attribute ((__hot__)) 788 #define ecb_hot ecb_attribute ((__hot__))
518 #define ecb_cold ecb_attribute ((__cold__)) 789 #define ecb_cold ecb_attribute ((__cold__))
… …
525/* put around conditional expressions if you are very sure that the */ 796/* put around conditional expressions if you are very sure that the */
526/* expression is mostly true or mostly false. note that these return */ 797/* expression is mostly true or mostly false. note that these return */
527/* booleans, not the expression. */ 798/* booleans, not the expression. */
528#define ecb_expect_false(expr) ecb_expect (!!(expr), 0) 799#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
529#define ecb_expect_true(expr) ecb_expect (!!(expr), 1) 800#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
530/* 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
531 1263
532#define expect_false(cond) ecb_expect_false (cond) 1264#define expect_false(cond) ecb_expect_false (cond)
533#define expect_true(cond) ecb_expect_true (cond) 1265#define expect_true(cond) ecb_expect_true (cond)
534#define noinline ecb_noinline 1266#define noinline ecb_noinline
535 1267
… …
681{ 1413{
682 write (STDERR_FILENO, msg, strlen (msg)); 1414 write (STDERR_FILENO, msg, strlen (msg));
683} 1415}
684#endif 1416#endif
685 1417
686static void (*syserr_cb)(const char *msg); 1418static void (*syserr_cb)(const char *msg) EV_THROW;
687 1419
688void ecb_cold 1420void ecb_cold
689ev_set_syserr_cb (void (*cb)(const char *msg)) 1421ev_set_syserr_cb (void (*cb)(const char *msg) EV_THROW) EV_THROW
690{ 1422{
691 syserr_cb = cb; 1423 syserr_cb = cb;
692} 1424}
693 1425
694static void noinline ecb_cold 1426static void noinline ecb_cold
… …
712 abort (); 1444 abort ();
713 } 1445 }
714} 1446}
715 1447
716static void * 1448static void *
717ev_realloc_emul (void *ptr, long size) 1449ev_realloc_emul (void *ptr, long size) EV_THROW
718{ 1450{
719#if __GLIBC__
720 return realloc (ptr, size);
721#else
722 /* some systems, notably openbsd and darwin, fail to properly 1451 /* some systems, notably openbsd and darwin, fail to properly
723 * 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
724 * 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.
725 */ 1456 */
726 1457
727 if (size) 1458 if (size)
728 return realloc (ptr, size); 1459 return realloc (ptr, size);
729 1460
730 free (ptr); 1461 free (ptr);
731 return 0; 1462 return 0;
732#endif
733} 1463}
734 1464
735static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1465static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;
736 1466
737void ecb_cold 1467void ecb_cold
738ev_set_allocator (void *(*cb)(void *ptr, long size)) 1468ev_set_allocator (void *(*cb)(void *ptr, long size) EV_THROW) EV_THROW
739{ 1469{
740 alloc = cb; 1470 alloc = cb;
741} 1471}
742 1472
743inline_speed void * 1473inline_speed void *
… …
831 #undef VAR 1561 #undef VAR
832 }; 1562 };
833 #include "ev_wrap.h" 1563 #include "ev_wrap.h"
834 1564
835 static struct ev_loop default_loop_struct; 1565 static struct ev_loop default_loop_struct;
836 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 */
837 1567
838#else 1568#else
839 1569
840 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 */
841 #define VAR(name,decl) static decl; 1571 #define VAR(name,decl) static decl;
842 #include "ev_vars.h" 1572 #include "ev_vars.h"
843 #undef VAR 1573 #undef VAR
844 1574
845 static int ev_default_loop_ptr; 1575 static int ev_default_loop_ptr;
… …
860 1590
861/*****************************************************************************/ 1591/*****************************************************************************/
862 1592
863#ifndef EV_HAVE_EV_TIME 1593#ifndef EV_HAVE_EV_TIME
864ev_tstamp 1594ev_tstamp
865ev_time (void) 1595ev_time (void) EV_THROW
866{ 1596{
867#if EV_USE_REALTIME 1597#if EV_USE_REALTIME
868 if (expect_true (have_realtime)) 1598 if (expect_true (have_realtime))
869 { 1599 {
870 struct timespec ts; 1600 struct timespec ts;
… …
894 return ev_time (); 1624 return ev_time ();
895} 1625}
896 1626
897#if EV_MULTIPLICITY 1627#if EV_MULTIPLICITY
898ev_tstamp 1628ev_tstamp
899ev_now (EV_P) 1629ev_now (EV_P) EV_THROW
900{ 1630{
901 return ev_rt_now; 1631 return ev_rt_now;
902} 1632}
903#endif 1633#endif
904 1634
905void 1635void
906ev_sleep (ev_tstamp delay) 1636ev_sleep (ev_tstamp delay) EV_THROW
907{ 1637{
908 if (delay > 0.) 1638 if (delay > 0.)
909 { 1639 {
910#if EV_USE_NANOSLEEP 1640#if EV_USE_NANOSLEEP
911 struct timespec ts; 1641 struct timespec ts;
912 1642
913 EV_TS_SET (ts, delay); 1643 EV_TS_SET (ts, delay);
914 nanosleep (&ts, 0); 1644 nanosleep (&ts, 0);
915#elif defined(_WIN32) 1645#elif defined _WIN32
916 Sleep ((unsigned long)(delay * 1e3)); 1646 Sleep ((unsigned long)(delay * 1e3));
917#else 1647#else
918 struct timeval tv; 1648 struct timeval tv;
919 1649
920 /* 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 */
… …
939 1669
940 do 1670 do
941 ncur <<= 1; 1671 ncur <<= 1;
942 while (cnt > ncur); 1672 while (cnt > ncur);
943 1673
944 /* 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 */
945 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1675 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
946 { 1676 {
947 ncur *= elem; 1677 ncur *= elem;
948 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);
949 ncur = ncur - sizeof (void *) * 4; 1679 ncur = ncur - sizeof (void *) * 4;
… …
964 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1694 memset ((void *)(base), 0, sizeof (*(base)) * (count))
965 1695
966#define array_needsize(type,base,cur,cnt,init) \ 1696#define array_needsize(type,base,cur,cnt,init) \
967 if (expect_false ((cnt) > (cur))) \ 1697 if (expect_false ((cnt) > (cur))) \
968 { \ 1698 { \
969 int ocur_ = (cur); \ 1699 int ecb_unused ocur_ = (cur); \
970 (base) = (type *)array_realloc \ 1700 (base) = (type *)array_realloc \
971 (sizeof (type), (base), &(cur), (cnt)); \ 1701 (sizeof (type), (base), &(cur), (cnt)); \
972 init ((base) + (ocur_), (cur) - ocur_); \ 1702 init ((base) + (ocur_), (cur) - ocur_); \
973 } 1703 }
974 1704
… …
992pendingcb (EV_P_ ev_prepare *w, int revents) 1722pendingcb (EV_P_ ev_prepare *w, int revents)
993{ 1723{
994} 1724}
995 1725
996void noinline 1726void noinline
997ev_feed_event (EV_P_ void *w, int revents) 1727ev_feed_event (EV_P_ void *w, int revents) EV_THROW
998{ 1728{
999 W w_ = (W)w; 1729 W w_ = (W)w;
1000 int pri = ABSPRI (w_); 1730 int pri = ABSPRI (w_);
1001 1731
1002 if (expect_false (w_->pending)) 1732 if (expect_false (w_->pending))
… …
1006 w_->pending = ++pendingcnt [pri]; 1736 w_->pending = ++pendingcnt [pri];
1007 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 1737 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
1008 pendings [pri][w_->pending - 1].w = w_; 1738 pendings [pri][w_->pending - 1].w = w_;
1009 pendings [pri][w_->pending - 1].events = revents; 1739 pendings [pri][w_->pending - 1].events = revents;
1010 } 1740 }
1741
1742 pendingpri = NUMPRI - 1;
1011} 1743}
1012 1744
1013inline_speed void 1745inline_speed void
1014feed_reverse (EV_P_ W w) 1746feed_reverse (EV_P_ W w)
1015{ 1747{
… …
1061 if (expect_true (!anfd->reify)) 1793 if (expect_true (!anfd->reify))
1062 fd_event_nocheck (EV_A_ fd, revents); 1794 fd_event_nocheck (EV_A_ fd, revents);
1063} 1795}
1064 1796
1065void 1797void
1066ev_feed_fd_event (EV_P_ int fd, int revents) 1798ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW
1067{ 1799{
1068 if (fd >= 0 && fd < anfdmax) 1800 if (fd >= 0 && fd < anfdmax)
1069 fd_event_nocheck (EV_A_ fd, revents); 1801 fd_event_nocheck (EV_A_ fd, revents);
1070} 1802}
1071 1803
… …
1390static void noinline ecb_cold 2122static void noinline ecb_cold
1391evpipe_init (EV_P) 2123evpipe_init (EV_P)
1392{ 2124{
1393 if (!ev_is_active (&pipe_w)) 2125 if (!ev_is_active (&pipe_w))
1394 { 2126 {
2127 int fds [2];
2128
1395# if EV_USE_EVENTFD 2129# if EV_USE_EVENTFD
2130 fds [0] = -1;
1396 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2131 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1397 if (evfd < 0 && errno == EINVAL) 2132 if (fds [1] < 0 && errno == EINVAL)
1398 evfd = eventfd (0, 0); 2133 fds [1] = eventfd (0, 0);
1399 2134
1400 if (evfd >= 0) 2135 if (fds [1] < 0)
2136# endif
1401 { 2137 {
2138 while (pipe (fds))
2139 ev_syserr ("(libev) error creating signal/async pipe");
2140
2141 fd_intern (fds [0]);
2142 }
2143
1402 evpipe [0] = -1; 2144 evpipe [0] = fds [0];
1403 fd_intern (evfd); /* doing it twice doesn't hurt */ 2145
1404 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));
1405 } 2196 }
1406 else 2197 else
1407# endif 2198#endif
1408 { 2199 {
1409 while (pipe (evpipe)) 2200#ifdef _WIN32
1410 ev_syserr ("(libev) error creating signal/async pipe"); 2201 WSABUF buf;
1411 2202 DWORD sent;
1412 fd_intern (evpipe [0]); 2203 buf.buf = &buf;
1413 fd_intern (evpipe [1]); 2204 buf.len = 1;
1414 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2205 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
2206#else
2207 write (evpipe [1], &(evpipe [1]), 1);
2208#endif
1415 } 2209 }
1416 2210
1417 ev_io_start (EV_A_ &pipe_w);
1418 ev_unref (EV_A); /* watcher should not keep loop alive */
1419 }
1420}
1421
1422inline_size void
1423evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1424{
1425 if (!*flag)
1426 {
1427 *flag = 1;
1428
1429 pipe_write_skipped = 1;
1430
1431 if (pipe_write_wanted)
1432 {
1433 int old_errno = errno; /* save errno because write will clobber it */
1434 char dummy;
1435
1436 pipe_write_skipped = 0;
1437
1438#if EV_USE_EVENTFD
1439 if (evfd >= 0)
1440 {
1441 uint64_t counter = 1;
1442 write (evfd, &counter, sizeof (uint64_t));
1443 }
1444 else
1445#endif
1446 {
1447 /* win32 people keep sending patches that change this write() to send() */
1448 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1449 /* so when you think this write should be a send instead, please find out */
1450 /* where your send() is from - it's definitely not the microsoft send, and */
1451 /* tell me. thank you. */
1452 write (evpipe [1], &dummy, 1);
1453 }
1454
1455 errno = old_errno; 2211 errno = old_errno;
1456 }
1457 } 2212 }
1458} 2213}
1459 2214
1460/* called whenever the libev signal pipe */ 2215/* called whenever the libev signal pipe */
1461/* got some events (signal, async) */ 2216/* got some events (signal, async) */
… …
1465 int i; 2220 int i;
1466 2221
1467 if (revents & EV_READ) 2222 if (revents & EV_READ)
1468 { 2223 {
1469#if EV_USE_EVENTFD 2224#if EV_USE_EVENTFD
1470 if (evfd >= 0) 2225 if (evpipe [0] < 0)
1471 { 2226 {
1472 uint64_t counter; 2227 uint64_t counter;
1473 read (evfd, &counter, sizeof (uint64_t)); 2228 read (evpipe [1], &counter, sizeof (uint64_t));
1474 } 2229 }
1475 else 2230 else
1476#endif 2231#endif
1477 { 2232 {
1478 char dummy; 2233 char dummy[4];
1479 /* 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
1480 read (evpipe [0], &dummy, 1); 2242 read (evpipe [0], &dummy, sizeof (dummy));
2243#endif
1481 } 2244 }
1482 } 2245 }
1483 2246
1484 pipe_write_skipped = 0; 2247 pipe_write_skipped = 0;
2248
2249 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
1485 2250
1486#if EV_SIGNAL_ENABLE 2251#if EV_SIGNAL_ENABLE
1487 if (sig_pending) 2252 if (sig_pending)
1488 { 2253 {
1489 sig_pending = 0; 2254 sig_pending = 0;
2255
2256 ECB_MEMORY_FENCE;
1490 2257
1491 for (i = EV_NSIG - 1; i--; ) 2258 for (i = EV_NSIG - 1; i--; )
1492 if (expect_false (signals [i].pending)) 2259 if (expect_false (signals [i].pending))
1493 ev_feed_signal_event (EV_A_ i + 1); 2260 ev_feed_signal_event (EV_A_ i + 1);
1494 } 2261 }
… …
1496 2263
1497#if EV_ASYNC_ENABLE 2264#if EV_ASYNC_ENABLE
1498 if (async_pending) 2265 if (async_pending)
1499 { 2266 {
1500 async_pending = 0; 2267 async_pending = 0;
2268
2269 ECB_MEMORY_FENCE;
1501 2270
1502 for (i = asynccnt; i--; ) 2271 for (i = asynccnt; i--; )
1503 if (asyncs [i]->sent) 2272 if (asyncs [i]->sent)
1504 { 2273 {
1505 asyncs [i]->sent = 0; 2274 asyncs [i]->sent = 0;
2275 ECB_MEMORY_FENCE_RELEASE;
1506 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2276 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1507 } 2277 }
1508 } 2278 }
1509#endif 2279#endif
1510} 2280}
1511 2281
1512/*****************************************************************************/ 2282/*****************************************************************************/
1513 2283
1514void 2284void
1515ev_feed_signal (int signum) 2285ev_feed_signal (int signum) EV_THROW
1516{ 2286{
1517#if EV_MULTIPLICITY 2287#if EV_MULTIPLICITY
2288 EV_P;
2289 ECB_MEMORY_FENCE_ACQUIRE;
1518 EV_P = signals [signum - 1].loop; 2290 EV_A = signals [signum - 1].loop;
1519 2291
1520 if (!EV_A) 2292 if (!EV_A)
1521 return; 2293 return;
1522#endif 2294#endif
1523 2295
1524 evpipe_init (EV_A);
1525
1526 signals [signum - 1].pending = 1; 2296 signals [signum - 1].pending = 1;
1527 evpipe_write (EV_A_ &sig_pending); 2297 evpipe_write (EV_A_ &sig_pending);
1528} 2298}
1529 2299
1530static void 2300static void
… …
1536 2306
1537 ev_feed_signal (signum); 2307 ev_feed_signal (signum);
1538} 2308}
1539 2309
1540void noinline 2310void noinline
1541ev_feed_signal_event (EV_P_ int signum) 2311ev_feed_signal_event (EV_P_ int signum) EV_THROW
1542{ 2312{
1543 WL w; 2313 WL w;
1544 2314
1545 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2315 if (expect_false (signum <= 0 || signum >= EV_NSIG))
1546 return; 2316 return;
1547 2317
1548 --signum; 2318 --signum;
1549 2319
1550#if EV_MULTIPLICITY 2320#if EV_MULTIPLICITY
… …
1554 if (expect_false (signals [signum].loop != EV_A)) 2324 if (expect_false (signals [signum].loop != EV_A))
1555 return; 2325 return;
1556#endif 2326#endif
1557 2327
1558 signals [signum].pending = 0; 2328 signals [signum].pending = 0;
2329 ECB_MEMORY_FENCE_RELEASE;
1559 2330
1560 for (w = signals [signum].head; w; w = w->next) 2331 for (w = signals [signum].head; w; w = w->next)
1561 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2332 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1562} 2333}
1563 2334
… …
1662#if EV_USE_SELECT 2433#if EV_USE_SELECT
1663# include "ev_select.c" 2434# include "ev_select.c"
1664#endif 2435#endif
1665 2436
1666int ecb_cold 2437int ecb_cold
1667ev_version_major (void) 2438ev_version_major (void) EV_THROW
1668{ 2439{
1669 return EV_VERSION_MAJOR; 2440 return EV_VERSION_MAJOR;
1670} 2441}
1671 2442
1672int ecb_cold 2443int ecb_cold
1673ev_version_minor (void) 2444ev_version_minor (void) EV_THROW
1674{ 2445{
1675 return EV_VERSION_MINOR; 2446 return EV_VERSION_MINOR;
1676} 2447}
1677 2448
1678/* 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 */
… …
1686 || getgid () != getegid (); 2457 || getgid () != getegid ();
1687#endif 2458#endif
1688} 2459}
1689 2460
1690unsigned int ecb_cold 2461unsigned int ecb_cold
1691ev_supported_backends (void) 2462ev_supported_backends (void) EV_THROW
1692{ 2463{
1693 unsigned int flags = 0; 2464 unsigned int flags = 0;
1694 2465
1695 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2466 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1696 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2467 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
… …
1700 2471
1701 return flags; 2472 return flags;
1702} 2473}
1703 2474
1704unsigned int ecb_cold 2475unsigned int ecb_cold
1705ev_recommended_backends (void) 2476ev_recommended_backends (void) EV_THROW
1706{ 2477{
1707 unsigned int flags = ev_supported_backends (); 2478 unsigned int flags = ev_supported_backends ();
1708 2479
1709#ifndef __NetBSD__ 2480#ifndef __NetBSD__
1710 /* kqueue is borked on everything but netbsd apparently */ 2481 /* kqueue is borked on everything but netbsd apparently */
… …
1722 2493
1723 return flags; 2494 return flags;
1724} 2495}
1725 2496
1726unsigned int ecb_cold 2497unsigned int ecb_cold
1727ev_embeddable_backends (void) 2498ev_embeddable_backends (void) EV_THROW
1728{ 2499{
1729 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2500 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1730 2501
1731 /* 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 */
1732 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 */
… …
1734 2505
1735 return flags; 2506 return flags;
1736} 2507}
1737 2508
1738unsigned int 2509unsigned int
1739ev_backend (EV_P) 2510ev_backend (EV_P) EV_THROW
1740{ 2511{
1741 return backend; 2512 return backend;
1742} 2513}
1743 2514
1744#if EV_FEATURE_API 2515#if EV_FEATURE_API
1745unsigned int 2516unsigned int
1746ev_iteration (EV_P) 2517ev_iteration (EV_P) EV_THROW
1747{ 2518{
1748 return loop_count; 2519 return loop_count;
1749} 2520}
1750 2521
1751unsigned int 2522unsigned int
1752ev_depth (EV_P) 2523ev_depth (EV_P) EV_THROW
1753{ 2524{
1754 return loop_depth; 2525 return loop_depth;
1755} 2526}
1756 2527
1757void 2528void
1758ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2529ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1759{ 2530{
1760 io_blocktime = interval; 2531 io_blocktime = interval;
1761} 2532}
1762 2533
1763void 2534void
1764ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2535ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1765{ 2536{
1766 timeout_blocktime = interval; 2537 timeout_blocktime = interval;
1767} 2538}
1768 2539
1769void 2540void
1770ev_set_userdata (EV_P_ void *data) 2541ev_set_userdata (EV_P_ void *data) EV_THROW
1771{ 2542{
1772 userdata = data; 2543 userdata = data;
1773} 2544}
1774 2545
1775void * 2546void *
1776ev_userdata (EV_P) 2547ev_userdata (EV_P) EV_THROW
1777{ 2548{
1778 return userdata; 2549 return userdata;
1779} 2550}
1780 2551
1781void 2552void
1782ev_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
1783{ 2554{
1784 invoke_cb = invoke_pending_cb; 2555 invoke_cb = invoke_pending_cb;
1785} 2556}
1786 2557
1787void 2558void
1788ev_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
1789{ 2560{
1790 release_cb = release; 2561 release_cb = release;
1791 acquire_cb = acquire; 2562 acquire_cb = acquire;
1792} 2563}
1793#endif 2564#endif
1794 2565
1795/* initialise a loop structure, must be zero-initialised */ 2566/* initialise a loop structure, must be zero-initialised */
1796static void noinline ecb_cold 2567static void noinline ecb_cold
1797loop_init (EV_P_ unsigned int flags) 2568loop_init (EV_P_ unsigned int flags) EV_THROW
1798{ 2569{
1799 if (!backend) 2570 if (!backend)
1800 { 2571 {
1801 origflags = flags; 2572 origflags = flags;
1802 2573
… …
1847#if EV_ASYNC_ENABLE 2618#if EV_ASYNC_ENABLE
1848 async_pending = 0; 2619 async_pending = 0;
1849#endif 2620#endif
1850 pipe_write_skipped = 0; 2621 pipe_write_skipped = 0;
1851 pipe_write_wanted = 0; 2622 pipe_write_wanted = 0;
2623 evpipe [0] = -1;
2624 evpipe [1] = -1;
1852#if EV_USE_INOTIFY 2625#if EV_USE_INOTIFY
1853 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 2626 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1854#endif 2627#endif
1855#if EV_USE_SIGNALFD 2628#if EV_USE_SIGNALFD
1856 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 2629 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
… …
1907 EV_INVOKE_PENDING; 2680 EV_INVOKE_PENDING;
1908 } 2681 }
1909#endif 2682#endif
1910 2683
1911#if EV_CHILD_ENABLE 2684#if EV_CHILD_ENABLE
1912 if (ev_is_active (&childev)) 2685 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
1913 { 2686 {
1914 ev_ref (EV_A); /* child watcher */ 2687 ev_ref (EV_A); /* child watcher */
1915 ev_signal_stop (EV_A_ &childev); 2688 ev_signal_stop (EV_A_ &childev);
1916 } 2689 }
1917#endif 2690#endif
… …
1919 if (ev_is_active (&pipe_w)) 2692 if (ev_is_active (&pipe_w))
1920 { 2693 {
1921 /*ev_ref (EV_A);*/ 2694 /*ev_ref (EV_A);*/
1922 /*ev_io_stop (EV_A_ &pipe_w);*/ 2695 /*ev_io_stop (EV_A_ &pipe_w);*/
1923 2696
1924#if EV_USE_EVENTFD
1925 if (evfd >= 0)
1926 close (evfd);
1927#endif
1928
1929 if (evpipe [0] >= 0)
1930 {
1931 EV_WIN32_CLOSE_FD (evpipe [0]); 2697 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
1932 EV_WIN32_CLOSE_FD (evpipe [1]); 2698 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
1933 }
1934 } 2699 }
1935 2700
1936#if EV_USE_SIGNALFD 2701#if EV_USE_SIGNALFD
1937 if (ev_is_active (&sigfd_w)) 2702 if (ev_is_active (&sigfd_w))
1938 close (sigfd); 2703 close (sigfd);
… …
2024#endif 2789#endif
2025#if EV_USE_INOTIFY 2790#if EV_USE_INOTIFY
2026 infy_fork (EV_A); 2791 infy_fork (EV_A);
2027#endif 2792#endif
2028 2793
2794#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2029 if (ev_is_active (&pipe_w)) 2795 if (ev_is_active (&pipe_w))
2030 { 2796 {
2031 /* 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 */
2032 2798
2033 ev_ref (EV_A); 2799 ev_ref (EV_A);
2034 ev_io_stop (EV_A_ &pipe_w); 2800 ev_io_stop (EV_A_ &pipe_w);
2035 2801
2036#if EV_USE_EVENTFD
2037 if (evfd >= 0)
2038 close (evfd);
2039#endif
2040
2041 if (evpipe [0] >= 0) 2802 if (evpipe [0] >= 0)
2042 {
2043 EV_WIN32_CLOSE_FD (evpipe [0]); 2803 EV_WIN32_CLOSE_FD (evpipe [0]);
2044 EV_WIN32_CLOSE_FD (evpipe [1]);
2045 }
2046 2804
2047#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2048 evpipe_init (EV_A); 2805 evpipe_init (EV_A);
2049 /* now iterate over everything, in case we missed something */ 2806 /* iterate over everything, in case we missed something before */
2050 pipecb (EV_A_ &pipe_w, EV_READ); 2807 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2051#endif
2052 } 2808 }
2809#endif
2053 2810
2054 postfork = 0; 2811 postfork = 0;
2055} 2812}
2056 2813
2057#if EV_MULTIPLICITY 2814#if EV_MULTIPLICITY
2058 2815
2059struct ev_loop * ecb_cold 2816struct ev_loop * ecb_cold
2060ev_loop_new (unsigned int flags) 2817ev_loop_new (unsigned int flags) EV_THROW
2061{ 2818{
2062 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2819 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
2063 2820
2064 memset (EV_A, 0, sizeof (struct ev_loop)); 2821 memset (EV_A, 0, sizeof (struct ev_loop));
2065 loop_init (EV_A_ flags); 2822 loop_init (EV_A_ flags);
… …
2109} 2866}
2110#endif 2867#endif
2111 2868
2112#if EV_FEATURE_API 2869#if EV_FEATURE_API
2113void ecb_cold 2870void ecb_cold
2114ev_verify (EV_P) 2871ev_verify (EV_P) EV_THROW
2115{ 2872{
2116#if EV_VERIFY 2873#if EV_VERIFY
2117 int i; 2874 int i;
2118 WL w; 2875 WL w, w2;
2119 2876
2120 assert (activecnt >= -1); 2877 assert (activecnt >= -1);
2121 2878
2122 assert (fdchangemax >= fdchangecnt); 2879 assert (fdchangemax >= fdchangecnt);
2123 for (i = 0; i < fdchangecnt; ++i) 2880 for (i = 0; i < fdchangecnt; ++i)
2124 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 2881 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
2125 2882
2126 assert (anfdmax >= 0); 2883 assert (anfdmax >= 0);
2127 for (i = 0; i < anfdmax; ++i) 2884 for (i = 0; i < anfdmax; ++i)
2885 {
2886 int j = 0;
2887
2128 for (w = anfds [i].head; w; w = w->next) 2888 for (w = w2 = anfds [i].head; w; w = w->next)
2129 { 2889 {
2130 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
2131 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));
2132 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));
2133 } 2900 }
2901 }
2134 2902
2135 assert (timermax >= timercnt); 2903 assert (timermax >= timercnt);
2136 verify_heap (EV_A_ timers, timercnt); 2904 verify_heap (EV_A_ timers, timercnt);
2137 2905
2138#if EV_PERIODIC_ENABLE 2906#if EV_PERIODIC_ENABLE
… …
2188#if EV_MULTIPLICITY 2956#if EV_MULTIPLICITY
2189struct ev_loop * ecb_cold 2957struct ev_loop * ecb_cold
2190#else 2958#else
2191int 2959int
2192#endif 2960#endif
2193ev_default_loop (unsigned int flags) 2961ev_default_loop (unsigned int flags) EV_THROW
2194{ 2962{
2195 if (!ev_default_loop_ptr) 2963 if (!ev_default_loop_ptr)
2196 { 2964 {
2197#if EV_MULTIPLICITY 2965#if EV_MULTIPLICITY
2198 EV_P = ev_default_loop_ptr = &default_loop_struct; 2966 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
2217 2985
2218 return ev_default_loop_ptr; 2986 return ev_default_loop_ptr;
2219} 2987}
2220 2988
2221void 2989void
2222ev_loop_fork (EV_P) 2990ev_loop_fork (EV_P) EV_THROW
2223{ 2991{
2224 postfork = 1; /* must be in line with ev_default_fork */ 2992 postfork = 1;
2225} 2993}
2226 2994
2227/*****************************************************************************/ 2995/*****************************************************************************/
2228 2996
2229void 2997void
… …
2231{ 2999{
2232 EV_CB_INVOKE ((W)w, revents); 3000 EV_CB_INVOKE ((W)w, revents);
2233} 3001}
2234 3002
2235unsigned int 3003unsigned int
2236ev_pending_count (EV_P) 3004ev_pending_count (EV_P) EV_THROW
2237{ 3005{
2238 int pri; 3006 int pri;
2239 unsigned int count = 0; 3007 unsigned int count = 0;
2240 3008
2241 for (pri = NUMPRI; pri--; ) 3009 for (pri = NUMPRI; pri--; )
… …
2245} 3013}
2246 3014
2247void noinline 3015void noinline
2248ev_invoke_pending (EV_P) 3016ev_invoke_pending (EV_P)
2249{ 3017{
2250 int pri; 3018 pendingpri = NUMPRI;
2251 3019
2252 for (pri = NUMPRI; pri--; ) 3020 while (pendingpri) /* pendingpri possibly gets modified in the inner loop */
3021 {
3022 --pendingpri;
3023
2253 while (pendingcnt [pri]) 3024 while (pendingcnt [pendingpri])
2254 { 3025 {
2255 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3026 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2256 3027
2257 p->w->pending = 0; 3028 p->w->pending = 0;
2258 EV_CB_INVOKE (p->w, p->events); 3029 EV_CB_INVOKE (p->w, p->events);
2259 EV_FREQUENT_CHECK; 3030 EV_FREQUENT_CHECK;
2260 } 3031 }
3032 }
2261} 3033}
2262 3034
2263#if EV_IDLE_ENABLE 3035#if EV_IDLE_ENABLE
2264/* make idle watchers pending. this handles the "call-idle */ 3036/* make idle watchers pending. this handles the "call-idle */
2265/* only when higher priorities are idle" logic */ 3037/* only when higher priorities are idle" logic */
… …
2355{ 3127{
2356 EV_FREQUENT_CHECK; 3128 EV_FREQUENT_CHECK;
2357 3129
2358 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3130 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2359 { 3131 {
2360 int feed_count = 0;
2361
2362 do 3132 do
2363 { 3133 {
2364 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3134 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2365 3135
2366 /*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)));*/
… …
2500 3270
2501 mn_now = ev_rt_now; 3271 mn_now = ev_rt_now;
2502 } 3272 }
2503} 3273}
2504 3274
2505void 3275int
2506ev_run (EV_P_ int flags) 3276ev_run (EV_P_ int flags)
2507{ 3277{
2508#if EV_FEATURE_API 3278#if EV_FEATURE_API
2509 ++loop_depth; 3279 ++loop_depth;
2510#endif 3280#endif
… …
2571 time_update (EV_A_ 1e100); 3341 time_update (EV_A_ 1e100);
2572 3342
2573 /* from now on, we want a pipe-wake-up */ 3343 /* from now on, we want a pipe-wake-up */
2574 pipe_write_wanted = 1; 3344 pipe_write_wanted = 1;
2575 3345
3346 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3347
2576 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped))) 3348 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2577 { 3349 {
2578 waittime = MAX_BLOCKTIME; 3350 waittime = MAX_BLOCKTIME;
2579 3351
2580 if (timercnt) 3352 if (timercnt)
… …
2621#endif 3393#endif
2622 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */ 3394 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2623 backend_poll (EV_A_ waittime); 3395 backend_poll (EV_A_ waittime);
2624 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */ 3396 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2625 3397
2626 pipe_write_wanted = 0; 3398 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
2627 3399
3400 ECB_MEMORY_FENCE_ACQUIRE;
2628 if (pipe_write_skipped) 3401 if (pipe_write_skipped)
2629 { 3402 {
2630 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)));
2631 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); 3404 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2632 } 3405 }
… …
2665 loop_done = EVBREAK_CANCEL; 3438 loop_done = EVBREAK_CANCEL;
2666 3439
2667#if EV_FEATURE_API 3440#if EV_FEATURE_API
2668 --loop_depth; 3441 --loop_depth;
2669#endif 3442#endif
3443
3444 return activecnt;
2670} 3445}
2671 3446
2672void 3447void
2673ev_break (EV_P_ int how) 3448ev_break (EV_P_ int how) EV_THROW
2674{ 3449{
2675 loop_done = how; 3450 loop_done = how;
2676} 3451}
2677 3452
2678void 3453void
2679ev_ref (EV_P) 3454ev_ref (EV_P) EV_THROW
2680{ 3455{
2681 ++activecnt; 3456 ++activecnt;
2682} 3457}
2683 3458
2684void 3459void
2685ev_unref (EV_P) 3460ev_unref (EV_P) EV_THROW
2686{ 3461{
2687 --activecnt; 3462 --activecnt;
2688} 3463}
2689 3464
2690void 3465void
2691ev_now_update (EV_P) 3466ev_now_update (EV_P) EV_THROW
2692{ 3467{
2693 time_update (EV_A_ 1e100); 3468 time_update (EV_A_ 1e100);
2694} 3469}
2695 3470
2696void 3471void
2697ev_suspend (EV_P) 3472ev_suspend (EV_P) EV_THROW
2698{ 3473{
2699 ev_now_update (EV_A); 3474 ev_now_update (EV_A);
2700} 3475}
2701 3476
2702void 3477void
2703ev_resume (EV_P) 3478ev_resume (EV_P) EV_THROW
2704{ 3479{
2705 ev_tstamp mn_prev = mn_now; 3480 ev_tstamp mn_prev = mn_now;
2706 3481
2707 ev_now_update (EV_A); 3482 ev_now_update (EV_A);
2708 timers_reschedule (EV_A_ mn_now - mn_prev); 3483 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2747 w->pending = 0; 3522 w->pending = 0;
2748 } 3523 }
2749} 3524}
2750 3525
2751int 3526int
2752ev_clear_pending (EV_P_ void *w) 3527ev_clear_pending (EV_P_ void *w) EV_THROW
2753{ 3528{
2754 W w_ = (W)w; 3529 W w_ = (W)w;
2755 int pending = w_->pending; 3530 int pending = w_->pending;
2756 3531
2757 if (expect_true (pending)) 3532 if (expect_true (pending))
… …
2790} 3565}
2791 3566
2792/*****************************************************************************/ 3567/*****************************************************************************/
2793 3568
2794void noinline 3569void noinline
2795ev_io_start (EV_P_ ev_io *w) 3570ev_io_start (EV_P_ ev_io *w) EV_THROW
2796{ 3571{
2797 int fd = w->fd; 3572 int fd = w->fd;
2798 3573
2799 if (expect_false (ev_is_active (w))) 3574 if (expect_false (ev_is_active (w)))
2800 return; 3575 return;
… …
2806 3581
2807 ev_start (EV_A_ (W)w, 1); 3582 ev_start (EV_A_ (W)w, 1);
2808 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3583 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2809 wlist_add (&anfds[fd].head, (WL)w); 3584 wlist_add (&anfds[fd].head, (WL)w);
2810 3585
3586 /* common bug, apparently */
3587 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3588
2811 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);
2812 w->events &= ~EV__IOFDSET; 3590 w->events &= ~EV__IOFDSET;
2813 3591
2814 EV_FREQUENT_CHECK; 3592 EV_FREQUENT_CHECK;
2815} 3593}
2816 3594
2817void noinline 3595void noinline
2818ev_io_stop (EV_P_ ev_io *w) 3596ev_io_stop (EV_P_ ev_io *w) EV_THROW
2819{ 3597{
2820 clear_pending (EV_A_ (W)w); 3598 clear_pending (EV_A_ (W)w);
2821 if (expect_false (!ev_is_active (w))) 3599 if (expect_false (!ev_is_active (w)))
2822 return; 3600 return;
2823 3601
… …
2832 3610
2833 EV_FREQUENT_CHECK; 3611 EV_FREQUENT_CHECK;
2834} 3612}
2835 3613
2836void noinline 3614void noinline
2837ev_timer_start (EV_P_ ev_timer *w) 3615ev_timer_start (EV_P_ ev_timer *w) EV_THROW
2838{ 3616{
2839 if (expect_false (ev_is_active (w))) 3617 if (expect_false (ev_is_active (w)))
2840 return; 3618 return;
2841 3619
2842 ev_at (w) += mn_now; 3620 ev_at (w) += mn_now;
… …
2856 3634
2857 /*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));*/
2858} 3636}
2859 3637
2860void noinline 3638void noinline
2861ev_timer_stop (EV_P_ ev_timer *w) 3639ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
2862{ 3640{
2863 clear_pending (EV_A_ (W)w); 3641 clear_pending (EV_A_ (W)w);
2864 if (expect_false (!ev_is_active (w))) 3642 if (expect_false (!ev_is_active (w)))
2865 return; 3643 return;
2866 3644
… …
2886 3664
2887 EV_FREQUENT_CHECK; 3665 EV_FREQUENT_CHECK;
2888} 3666}
2889 3667
2890void noinline 3668void noinline
2891ev_timer_again (EV_P_ ev_timer *w) 3669ev_timer_again (EV_P_ ev_timer *w) EV_THROW
2892{ 3670{
2893 EV_FREQUENT_CHECK; 3671 EV_FREQUENT_CHECK;
3672
3673 clear_pending (EV_A_ (W)w);
2894 3674
2895 if (ev_is_active (w)) 3675 if (ev_is_active (w))
2896 { 3676 {
2897 if (w->repeat) 3677 if (w->repeat)
2898 { 3678 {
… …
2911 3691
2912 EV_FREQUENT_CHECK; 3692 EV_FREQUENT_CHECK;
2913} 3693}
2914 3694
2915ev_tstamp 3695ev_tstamp
2916ev_timer_remaining (EV_P_ ev_timer *w) 3696ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW
2917{ 3697{
2918 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 3698 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2919} 3699}
2920 3700
2921#if EV_PERIODIC_ENABLE 3701#if EV_PERIODIC_ENABLE
2922void noinline 3702void noinline
2923ev_periodic_start (EV_P_ ev_periodic *w) 3703ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
2924{ 3704{
2925 if (expect_false (ev_is_active (w))) 3705 if (expect_false (ev_is_active (w)))
2926 return; 3706 return;
2927 3707
2928 if (w->reschedule_cb) 3708 if (w->reschedule_cb)
… …
2948 3728
2949 /*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));*/
2950} 3730}
2951 3731
2952void noinline 3732void noinline
2953ev_periodic_stop (EV_P_ ev_periodic *w) 3733ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
2954{ 3734{
2955 clear_pending (EV_A_ (W)w); 3735 clear_pending (EV_A_ (W)w);
2956 if (expect_false (!ev_is_active (w))) 3736 if (expect_false (!ev_is_active (w)))
2957 return; 3737 return;
2958 3738
… …
2976 3756
2977 EV_FREQUENT_CHECK; 3757 EV_FREQUENT_CHECK;
2978} 3758}
2979 3759
2980void noinline 3760void noinline
2981ev_periodic_again (EV_P_ ev_periodic *w) 3761ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
2982{ 3762{
2983 /* TODO: use adjustheap and recalculation */ 3763 /* TODO: use adjustheap and recalculation */
2984 ev_periodic_stop (EV_A_ w); 3764 ev_periodic_stop (EV_A_ w);
2985 ev_periodic_start (EV_A_ w); 3765 ev_periodic_start (EV_A_ w);
2986} 3766}
… …
2991#endif 3771#endif
2992 3772
2993#if EV_SIGNAL_ENABLE 3773#if EV_SIGNAL_ENABLE
2994 3774
2995void noinline 3775void noinline
2996ev_signal_start (EV_P_ ev_signal *w) 3776ev_signal_start (EV_P_ ev_signal *w) EV_THROW
2997{ 3777{
2998 if (expect_false (ev_is_active (w))) 3778 if (expect_false (ev_is_active (w)))
2999 return; 3779 return;
3000 3780
3001 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));
… …
3003#if EV_MULTIPLICITY 3783#if EV_MULTIPLICITY
3004 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",
3005 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 3785 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
3006 3786
3007 signals [w->signum - 1].loop = EV_A; 3787 signals [w->signum - 1].loop = EV_A;
3788 ECB_MEMORY_FENCE_RELEASE;
3008#endif 3789#endif
3009 3790
3010 EV_FREQUENT_CHECK; 3791 EV_FREQUENT_CHECK;
3011 3792
3012#if EV_USE_SIGNALFD 3793#if EV_USE_SIGNALFD
… …
3072 3853
3073 EV_FREQUENT_CHECK; 3854 EV_FREQUENT_CHECK;
3074} 3855}
3075 3856
3076void noinline 3857void noinline
3077ev_signal_stop (EV_P_ ev_signal *w) 3858ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
3078{ 3859{
3079 clear_pending (EV_A_ (W)w); 3860 clear_pending (EV_A_ (W)w);
3080 if (expect_false (!ev_is_active (w))) 3861 if (expect_false (!ev_is_active (w)))
3081 return; 3862 return;
3082 3863
… …
3113#endif 3894#endif
3114 3895
3115#if EV_CHILD_ENABLE 3896#if EV_CHILD_ENABLE
3116 3897
3117void 3898void
3118ev_child_start (EV_P_ ev_child *w) 3899ev_child_start (EV_P_ ev_child *w) EV_THROW
3119{ 3900{
3120#if EV_MULTIPLICITY 3901#if EV_MULTIPLICITY
3121 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));
3122#endif 3903#endif
3123 if (expect_false (ev_is_active (w))) 3904 if (expect_false (ev_is_active (w)))
… …
3130 3911
3131 EV_FREQUENT_CHECK; 3912 EV_FREQUENT_CHECK;
3132} 3913}
3133 3914
3134void 3915void
3135ev_child_stop (EV_P_ ev_child *w) 3916ev_child_stop (EV_P_ ev_child *w) EV_THROW
3136{ 3917{
3137 clear_pending (EV_A_ (W)w); 3918 clear_pending (EV_A_ (W)w);
3138 if (expect_false (!ev_is_active (w))) 3919 if (expect_false (!ev_is_active (w)))
3139 return; 3920 return;
3140 3921
… …
3167# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 3948# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
3168 3949
3169static void noinline 3950static void noinline
3170infy_add (EV_P_ ev_stat *w) 3951infy_add (EV_P_ ev_stat *w)
3171{ 3952{
3172 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);
3173 3957
3174 if (w->wd >= 0) 3958 if (w->wd >= 0)
3175 { 3959 {
3176 struct statfs sfs; 3960 struct statfs sfs;
3177 3961
… …
3181 3965
3182 if (!fs_2625) 3966 if (!fs_2625)
3183 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 3967 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3184 else if (!statfs (w->path, &sfs) 3968 else if (!statfs (w->path, &sfs)
3185 && (sfs.f_type == 0x1373 /* devfs */ 3969 && (sfs.f_type == 0x1373 /* devfs */
3970 || sfs.f_type == 0x4006 /* fat */
3971 || sfs.f_type == 0x4d44 /* msdos */
3186 || 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 */
3187 || sfs.f_type == 0x3153464a /* jfs */ 3976 || sfs.f_type == 0x3153464a /* jfs */
3977 || sfs.f_type == 0x9123683e /* btrfs */
3188 || sfs.f_type == 0x52654973 /* reiser3 */ 3978 || sfs.f_type == 0x52654973 /* reiser3 */
3189 || sfs.f_type == 0x01021994 /* tempfs */ 3979 || sfs.f_type == 0x01021994 /* tmpfs */
3190 || sfs.f_type == 0x58465342 /* xfs */)) 3980 || sfs.f_type == 0x58465342 /* xfs */))
3191 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ 3981 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3192 else 3982 else
3193 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 */
3194 } 3984 }
… …
3307} 4097}
3308 4098
3309inline_size int 4099inline_size int
3310infy_newfd (void) 4100infy_newfd (void)
3311{ 4101{
3312#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 4102#if defined IN_CLOEXEC && defined IN_NONBLOCK
3313 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 4103 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3314 if (fd >= 0) 4104 if (fd >= 0)
3315 return fd; 4105 return fd;
3316#endif 4106#endif
3317 return inotify_init (); 4107 return inotify_init ();
… …
3392#else 4182#else
3393# define EV_LSTAT(p,b) lstat (p, b) 4183# define EV_LSTAT(p,b) lstat (p, b)
3394#endif 4184#endif
3395 4185
3396void 4186void
3397ev_stat_stat (EV_P_ ev_stat *w) 4187ev_stat_stat (EV_P_ ev_stat *w) EV_THROW
3398{ 4188{
3399 if (lstat (w->path, &w->attr) < 0) 4189 if (lstat (w->path, &w->attr) < 0)
3400 w->attr.st_nlink = 0; 4190 w->attr.st_nlink = 0;
3401 else if (!w->attr.st_nlink) 4191 else if (!w->attr.st_nlink)
3402 w->attr.st_nlink = 1; 4192 w->attr.st_nlink = 1;
… …
3441 ev_feed_event (EV_A_ w, EV_STAT); 4231 ev_feed_event (EV_A_ w, EV_STAT);
3442 } 4232 }
3443} 4233}
3444 4234
3445void 4235void
3446ev_stat_start (EV_P_ ev_stat *w) 4236ev_stat_start (EV_P_ ev_stat *w) EV_THROW
3447{ 4237{
3448 if (expect_false (ev_is_active (w))) 4238 if (expect_false (ev_is_active (w)))
3449 return; 4239 return;
3450 4240
3451 ev_stat_stat (EV_A_ w); 4241 ev_stat_stat (EV_A_ w);
… …
3472 4262
3473 EV_FREQUENT_CHECK; 4263 EV_FREQUENT_CHECK;
3474} 4264}
3475 4265
3476void 4266void
3477ev_stat_stop (EV_P_ ev_stat *w) 4267ev_stat_stop (EV_P_ ev_stat *w) EV_THROW
3478{ 4268{
3479 clear_pending (EV_A_ (W)w); 4269 clear_pending (EV_A_ (W)w);
3480 if (expect_false (!ev_is_active (w))) 4270 if (expect_false (!ev_is_active (w)))
3481 return; 4271 return;
3482 4272
… …
3498} 4288}
3499#endif 4289#endif
3500 4290
3501#if EV_IDLE_ENABLE 4291#if EV_IDLE_ENABLE
3502void 4292void
3503ev_idle_start (EV_P_ ev_idle *w) 4293ev_idle_start (EV_P_ ev_idle *w) EV_THROW
3504{ 4294{
3505 if (expect_false (ev_is_active (w))) 4295 if (expect_false (ev_is_active (w)))
3506 return; 4296 return;
3507 4297
3508 pri_adjust (EV_A_ (W)w); 4298 pri_adjust (EV_A_ (W)w);
… …
3521 4311
3522 EV_FREQUENT_CHECK; 4312 EV_FREQUENT_CHECK;
3523} 4313}
3524 4314
3525void 4315void
3526ev_idle_stop (EV_P_ ev_idle *w) 4316ev_idle_stop (EV_P_ ev_idle *w) EV_THROW
3527{ 4317{
3528 clear_pending (EV_A_ (W)w); 4318 clear_pending (EV_A_ (W)w);
3529 if (expect_false (!ev_is_active (w))) 4319 if (expect_false (!ev_is_active (w)))
3530 return; 4320 return;
3531 4321
… …
3545} 4335}
3546#endif 4336#endif
3547 4337
3548#if EV_PREPARE_ENABLE 4338#if EV_PREPARE_ENABLE
3549void 4339void
3550ev_prepare_start (EV_P_ ev_prepare *w) 4340ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW
3551{ 4341{
3552 if (expect_false (ev_is_active (w))) 4342 if (expect_false (ev_is_active (w)))
3553 return; 4343 return;
3554 4344
3555 EV_FREQUENT_CHECK; 4345 EV_FREQUENT_CHECK;
… …
3560 4350
3561 EV_FREQUENT_CHECK; 4351 EV_FREQUENT_CHECK;
3562} 4352}
3563 4353
3564void 4354void
3565ev_prepare_stop (EV_P_ ev_prepare *w) 4355ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW
3566{ 4356{
3567 clear_pending (EV_A_ (W)w); 4357 clear_pending (EV_A_ (W)w);
3568 if (expect_false (!ev_is_active (w))) 4358 if (expect_false (!ev_is_active (w)))
3569 return; 4359 return;
3570 4360
… …
3583} 4373}
3584#endif 4374#endif
3585 4375
3586#if EV_CHECK_ENABLE 4376#if EV_CHECK_ENABLE
3587void 4377void
3588ev_check_start (EV_P_ ev_check *w) 4378ev_check_start (EV_P_ ev_check *w) EV_THROW
3589{ 4379{
3590 if (expect_false (ev_is_active (w))) 4380 if (expect_false (ev_is_active (w)))
3591 return; 4381 return;
3592 4382
3593 EV_FREQUENT_CHECK; 4383 EV_FREQUENT_CHECK;
… …
3598 4388
3599 EV_FREQUENT_CHECK; 4389 EV_FREQUENT_CHECK;
3600} 4390}
3601 4391
3602void 4392void
3603ev_check_stop (EV_P_ ev_check *w) 4393ev_check_stop (EV_P_ ev_check *w) EV_THROW
3604{ 4394{
3605 clear_pending (EV_A_ (W)w); 4395 clear_pending (EV_A_ (W)w);
3606 if (expect_false (!ev_is_active (w))) 4396 if (expect_false (!ev_is_active (w)))
3607 return; 4397 return;
3608 4398
… …
3621} 4411}
3622#endif 4412#endif
3623 4413
3624#if EV_EMBED_ENABLE 4414#if EV_EMBED_ENABLE
3625void noinline 4415void noinline
3626ev_embed_sweep (EV_P_ ev_embed *w) 4416ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
3627{ 4417{
3628 ev_run (w->other, EVRUN_NOWAIT); 4418 ev_run (w->other, EVRUN_NOWAIT);
3629} 4419}
3630 4420
3631static void 4421static void
… …
3679 ev_idle_stop (EV_A_ idle); 4469 ev_idle_stop (EV_A_ idle);
3680} 4470}
3681#endif 4471#endif
3682 4472
3683void 4473void
3684ev_embed_start (EV_P_ ev_embed *w) 4474ev_embed_start (EV_P_ ev_embed *w) EV_THROW
3685{ 4475{
3686 if (expect_false (ev_is_active (w))) 4476 if (expect_false (ev_is_active (w)))
3687 return; 4477 return;
3688 4478
3689 { 4479 {
… …
3710 4500
3711 EV_FREQUENT_CHECK; 4501 EV_FREQUENT_CHECK;
3712} 4502}
3713 4503
3714void 4504void
3715ev_embed_stop (EV_P_ ev_embed *w) 4505ev_embed_stop (EV_P_ ev_embed *w) EV_THROW
3716{ 4506{
3717 clear_pending (EV_A_ (W)w); 4507 clear_pending (EV_A_ (W)w);
3718 if (expect_false (!ev_is_active (w))) 4508 if (expect_false (!ev_is_active (w)))
3719 return; 4509 return;
3720 4510
… …
3730} 4520}
3731#endif 4521#endif
3732 4522
3733#if EV_FORK_ENABLE 4523#if EV_FORK_ENABLE
3734void 4524void
3735ev_fork_start (EV_P_ ev_fork *w) 4525ev_fork_start (EV_P_ ev_fork *w) EV_THROW
3736{ 4526{
3737 if (expect_false (ev_is_active (w))) 4527 if (expect_false (ev_is_active (w)))
3738 return; 4528 return;
3739 4529
3740 EV_FREQUENT_CHECK; 4530 EV_FREQUENT_CHECK;
… …
3745 4535
3746 EV_FREQUENT_CHECK; 4536 EV_FREQUENT_CHECK;
3747} 4537}
3748 4538
3749void 4539void
3750ev_fork_stop (EV_P_ ev_fork *w) 4540ev_fork_stop (EV_P_ ev_fork *w) EV_THROW
3751{ 4541{
3752 clear_pending (EV_A_ (W)w); 4542 clear_pending (EV_A_ (W)w);
3753 if (expect_false (!ev_is_active (w))) 4543 if (expect_false (!ev_is_active (w)))
3754 return; 4544 return;
3755 4545
… …
3768} 4558}
3769#endif 4559#endif
3770 4560
3771#if EV_CLEANUP_ENABLE 4561#if EV_CLEANUP_ENABLE
3772void 4562void
3773ev_cleanup_start (EV_P_ ev_cleanup *w) 4563ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW
3774{ 4564{
3775 if (expect_false (ev_is_active (w))) 4565 if (expect_false (ev_is_active (w)))
3776 return; 4566 return;
3777 4567
3778 EV_FREQUENT_CHECK; 4568 EV_FREQUENT_CHECK;
… …
3785 ev_unref (EV_A); 4575 ev_unref (EV_A);
3786 EV_FREQUENT_CHECK; 4576 EV_FREQUENT_CHECK;
3787} 4577}
3788 4578
3789void 4579void
3790ev_cleanup_stop (EV_P_ ev_cleanup *w) 4580ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW
3791{ 4581{
3792 clear_pending (EV_A_ (W)w); 4582 clear_pending (EV_A_ (W)w);
3793 if (expect_false (!ev_is_active (w))) 4583 if (expect_false (!ev_is_active (w)))
3794 return; 4584 return;
3795 4585
… …
3809} 4599}
3810#endif 4600#endif
3811 4601
3812#if EV_ASYNC_ENABLE 4602#if EV_ASYNC_ENABLE
3813void 4603void
3814ev_async_start (EV_P_ ev_async *w) 4604ev_async_start (EV_P_ ev_async *w) EV_THROW
3815{ 4605{
3816 if (expect_false (ev_is_active (w))) 4606 if (expect_false (ev_is_active (w)))
3817 return; 4607 return;
3818 4608
3819 w->sent = 0; 4609 w->sent = 0;
… …
3828 4618
3829 EV_FREQUENT_CHECK; 4619 EV_FREQUENT_CHECK;
3830} 4620}
3831 4621
3832void 4622void
3833ev_async_stop (EV_P_ ev_async *w) 4623ev_async_stop (EV_P_ ev_async *w) EV_THROW
3834{ 4624{
3835 clear_pending (EV_A_ (W)w); 4625 clear_pending (EV_A_ (W)w);
3836 if (expect_false (!ev_is_active (w))) 4626 if (expect_false (!ev_is_active (w)))
3837 return; 4627 return;
3838 4628
… …
3849 4639
3850 EV_FREQUENT_CHECK; 4640 EV_FREQUENT_CHECK;
3851} 4641}
3852 4642
3853void 4643void
3854ev_async_send (EV_P_ ev_async *w) 4644ev_async_send (EV_P_ ev_async *w) EV_THROW
3855{ 4645{
3856 w->sent = 1; 4646 w->sent = 1;
3857 evpipe_write (EV_A_ &async_pending); 4647 evpipe_write (EV_A_ &async_pending);
3858} 4648}
3859#endif 4649#endif
… …
3896 4686
3897 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));
3898} 4688}
3899 4689
3900void 4690void
3901ev_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
3902{ 4692{
3903 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));
3904 4694
3905 if (expect_false (!once)) 4695 if (expect_false (!once))
3906 { 4696 {
… …
3928 4718
3929/*****************************************************************************/ 4719/*****************************************************************************/
3930 4720
3931#if EV_WALK_ENABLE 4721#if EV_WALK_ENABLE
3932void ecb_cold 4722void ecb_cold
3933ev_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
3934{ 4724{
3935 int i, j; 4725 int i, j;
3936 ev_watcher_list *wl, *wn; 4726 ev_watcher_list *wl, *wn;
3937 4727
3938 if (types & (EV_IO | EV_EMBED)) 4728 if (types & (EV_IO | EV_EMBED))
… …
3981 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 4771 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3982#endif 4772#endif
3983 4773
3984#if EV_IDLE_ENABLE 4774#if EV_IDLE_ENABLE
3985 if (types & EV_IDLE) 4775 if (types & EV_IDLE)
3986 for (j = NUMPRI; i--; ) 4776 for (j = NUMPRI; j--; )
3987 for (i = idlecnt [j]; i--; ) 4777 for (i = idlecnt [j]; i--; )
3988 cb (EV_A_ EV_IDLE, idles [j][i]); 4778 cb (EV_A_ EV_IDLE, idles [j][i]);
3989#endif 4779#endif
3990 4780
3991#if EV_FORK_ENABLE 4781#if EV_FORK_ENABLE
… …
4044 4834
4045#if EV_MULTIPLICITY 4835#if EV_MULTIPLICITY
4046 #include "ev_wrap.h" 4836 #include "ev_wrap.h"
4047#endif 4837#endif
4048 4838
4049EV_CPP(})
4050

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