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Comparing libev/ev.c (file contents):
Revision 1.387 by root, Wed Jul 20 01:04:43 2011 UTC vs.
Revision 1.452 by root, Mon Feb 18 03:20:29 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 0x00010002
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
471 553
472/* many compilers define _GNUC_ to some versions but then only implement 554/* many compilers define _GNUC_ to some versions but then only implement
473 * what their idiot authors think are the "more important" extensions, 555 * what their idiot authors think are the "more important" extensions,
474 * causing enourmous grief in return for some better fake benchmark numbers. 556 * causing enormous grief in return for some better fake benchmark numbers.
475 * or so. 557 * or so.
476 * we try to detect these and simply assume they are not gcc - if they have 558 * 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. 559 * an issue with that they should have done it right in the first place.
478 */ 560 */
479#ifndef ECB_GCC_VERSION 561#ifndef ECB_GCC_VERSION
480 #if !defined(__GNUC_MINOR__) || defined(__INTEL_COMPILER) || defined(__SUNPRO_C) || defined(__SUNPRO_CC) || defined(__llvm__) || defined(__clang__) 562 #if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
481 #define ECB_GCC_VERSION(major,minor) 0 563 #define ECB_GCC_VERSION(major,minor) 0
482 #else 564 #else
483 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor))) 565 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
484 #endif 566 #endif
485#endif 567#endif
568
569#define ECB_C (__STDC__+0) /* this assumes that __STDC__ is either empty or a number */
570#define ECB_C99 (__STDC_VERSION__ >= 199901L)
571#define ECB_C11 (__STDC_VERSION__ >= 201112L)
572#define ECB_CPP (__cplusplus+0)
573#define ECB_CPP11 (__cplusplus >= 201103L)
574
575#if ECB_CPP
576 #define ECB_EXTERN_C extern "C"
577 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
578 #define ECB_EXTERN_C_END }
579#else
580 #define ECB_EXTERN_C extern
581 #define ECB_EXTERN_C_BEG
582 #define ECB_EXTERN_C_END
583#endif
584
585/*****************************************************************************/
586
587/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
588/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
589
590#if ECB_NO_THREADS
591 #define ECB_NO_SMP 1
592#endif
593
594#if ECB_NO_SMP
595 #define ECB_MEMORY_FENCE do { } while (0)
596#endif
597
598#ifndef ECB_MEMORY_FENCE
599 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
600 #if __i386 || __i386__
601 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
602 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
603 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
604 #elif __amd64 || __amd64__ || __x86_64 || __x86_64__
605 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
606 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
607 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
608 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
609 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
610 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
611 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__
612 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
613 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
614 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__
615 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
616 #elif __sparc || __sparc__
617 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
618 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
619 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
620 #elif defined __s390__ || defined __s390x__
621 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
622 #elif defined __mips__
623 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
624 #elif defined __alpha__
625 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
626 #elif defined __hppa__
627 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
628 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
629 #elif defined __ia64__
630 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
631 #endif
632 #endif
633#endif
634
635#ifndef ECB_MEMORY_FENCE
636 #if ECB_GCC_VERSION(4,7)
637 /* see comment below (stdatomic.h) about the C11 memory model. */
638 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
639
640 /* The __has_feature syntax from clang is so misdesigned that we cannot use it
641 * without risking compile time errors with other compilers. We *could*
642 * define our own ecb_clang_has_feature, but I just can't be bothered to work
643 * around this shit time and again.
644 * #elif defined __clang && __has_feature (cxx_atomic)
645 * // see comment below (stdatomic.h) about the C11 memory model.
646 * #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
647 */
648
649 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
650 #define ECB_MEMORY_FENCE __sync_synchronize ()
651 #elif _MSC_VER >= 1400 /* VC++ 2005 */
652 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
653 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
654 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
655 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
656 #elif defined _WIN32
657 #include <WinNT.h>
658 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
659 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
660 #include <mbarrier.h>
661 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
662 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
663 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
664 #elif __xlC__
665 #define ECB_MEMORY_FENCE __sync ()
666 #endif
667#endif
668
669#ifndef ECB_MEMORY_FENCE
670 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
671 /* we assume that these memory fences work on all variables/all memory accesses, */
672 /* not just C11 atomics and atomic accesses */
673 #include <stdatomic.h>
674 /* Unfortunately, neither gcc 4.7 nor clang 3.1 generate any instructions for */
675 /* any fence other than seq_cst, which isn't very efficient for us. */
676 /* Why that is, we don't know - either the C11 memory model is quite useless */
677 /* for most usages, or gcc and clang have a bug */
678 /* I *currently* lean towards the latter, and inefficiently implement */
679 /* all three of ecb's fences as a seq_cst fence */
680 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
681 #endif
682#endif
683
684#ifndef ECB_MEMORY_FENCE
685 #if !ECB_AVOID_PTHREADS
686 /*
687 * if you get undefined symbol references to pthread_mutex_lock,
688 * or failure to find pthread.h, then you should implement
689 * the ECB_MEMORY_FENCE operations for your cpu/compiler
690 * OR provide pthread.h and link against the posix thread library
691 * of your system.
692 */
693 #include <pthread.h>
694 #define ECB_NEEDS_PTHREADS 1
695 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
696
697 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
698 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
699 #endif
700#endif
701
702#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
703 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
704#endif
705
706#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
707 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
708#endif
709
710/*****************************************************************************/
486 711
487#if __cplusplus 712#if __cplusplus
488 #define ecb_inline static inline 713 #define ecb_inline static inline
489#elif ECB_GCC_VERSION(2,5) 714#elif ECB_GCC_VERSION(2,5)
490 #define ecb_inline static __inline__ 715 #define ecb_inline static __inline__
492 #define ecb_inline static inline 717 #define ecb_inline static inline
493#else 718#else
494 #define ecb_inline static 719 #define ecb_inline static
495#endif 720#endif
496 721
497#ifndef ECB_MEMORY_FENCE
498 #if ECB_GCC_VERSION(2,5) 722#if ECB_GCC_VERSION(3,3)
499 #if __x86 723 #define ecb_restrict __restrict__
500 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory") 724#elif ECB_C99
501 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE 725 #define ecb_restrict restrict
502 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE 726#else
503 #elif __amd64 727 #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 728#endif
509#endif
510 729
511#ifndef ECB_MEMORY_FENCE 730typedef 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
522 731
523#ifndef ECB_MEMORY_FENCE 732#define ECB_CONCAT_(a, b) a ## b
524 #include <pthread.h> 733#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
734#define ECB_STRINGIFY_(a) # a
735#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
525 736
526 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER; 737#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
531 738
532#if ECB_GCC_VERSION(3,1) 739#if ECB_GCC_VERSION(3,1)
533 #define ecb_attribute(attrlist) __attribute__(attrlist) 740 #define ecb_attribute(attrlist) __attribute__(attrlist)
534 #define ecb_is_constant(expr) __builtin_constant_p (expr) 741 #define ecb_is_constant(expr) __builtin_constant_p (expr)
535 #define ecb_expect(expr,value) __builtin_expect ((expr),(value)) 742 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
539 #define ecb_is_constant(expr) 0 746 #define ecb_is_constant(expr) 0
540 #define ecb_expect(expr,value) (expr) 747 #define ecb_expect(expr,value) (expr)
541 #define ecb_prefetch(addr,rw,locality) 748 #define ecb_prefetch(addr,rw,locality)
542#endif 749#endif
543 750
751/* no emulation for ecb_decltype */
752#if ECB_GCC_VERSION(4,5)
753 #define ecb_decltype(x) __decltype(x)
754#elif ECB_GCC_VERSION(3,0)
755 #define ecb_decltype(x) __typeof(x)
756#endif
757
544#define ecb_noinline ecb_attribute ((__noinline__)) 758#define ecb_noinline ecb_attribute ((__noinline__))
545#define ecb_noreturn ecb_attribute ((__noreturn__))
546#define ecb_unused ecb_attribute ((__unused__)) 759#define ecb_unused ecb_attribute ((__unused__))
547#define ecb_const ecb_attribute ((__const__)) 760#define ecb_const ecb_attribute ((__const__))
548#define ecb_pure ecb_attribute ((__pure__)) 761#define ecb_pure ecb_attribute ((__pure__))
762
763#if ECB_C11
764 #define ecb_noreturn _Noreturn
765#else
766 #define ecb_noreturn ecb_attribute ((__noreturn__))
767#endif
549 768
550#if ECB_GCC_VERSION(4,3) 769#if ECB_GCC_VERSION(4,3)
551 #define ecb_artificial ecb_attribute ((__artificial__)) 770 #define ecb_artificial ecb_attribute ((__artificial__))
552 #define ecb_hot ecb_attribute ((__hot__)) 771 #define ecb_hot ecb_attribute ((__hot__))
553 #define ecb_cold ecb_attribute ((__cold__)) 772 #define ecb_cold ecb_attribute ((__cold__))
560/* put around conditional expressions if you are very sure that the */ 779/* put around conditional expressions if you are very sure that the */
561/* expression is mostly true or mostly false. note that these return */ 780/* expression is mostly true or mostly false. note that these return */
562/* booleans, not the expression. */ 781/* booleans, not the expression. */
563#define ecb_expect_false(expr) ecb_expect (!!(expr), 0) 782#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
564#define ecb_expect_true(expr) ecb_expect (!!(expr), 1) 783#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
565/* ecb.h end */ 784/* for compatibility to the rest of the world */
785#define ecb_likely(expr) ecb_expect_true (expr)
786#define ecb_unlikely(expr) ecb_expect_false (expr)
787
788/* count trailing zero bits and count # of one bits */
789#if ECB_GCC_VERSION(3,4)
790 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
791 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
792 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
793 #define ecb_ctz32(x) __builtin_ctz (x)
794 #define ecb_ctz64(x) __builtin_ctzll (x)
795 #define ecb_popcount32(x) __builtin_popcount (x)
796 /* no popcountll */
797#else
798 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const;
799 ecb_function_ int
800 ecb_ctz32 (uint32_t x)
801 {
802 int r = 0;
803
804 x &= ~x + 1; /* this isolates the lowest bit */
805
806#if ECB_branchless_on_i386
807 r += !!(x & 0xaaaaaaaa) << 0;
808 r += !!(x & 0xcccccccc) << 1;
809 r += !!(x & 0xf0f0f0f0) << 2;
810 r += !!(x & 0xff00ff00) << 3;
811 r += !!(x & 0xffff0000) << 4;
812#else
813 if (x & 0xaaaaaaaa) r += 1;
814 if (x & 0xcccccccc) r += 2;
815 if (x & 0xf0f0f0f0) r += 4;
816 if (x & 0xff00ff00) r += 8;
817 if (x & 0xffff0000) r += 16;
818#endif
819
820 return r;
821 }
822
823 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const;
824 ecb_function_ int
825 ecb_ctz64 (uint64_t x)
826 {
827 int shift = x & 0xffffffffU ? 0 : 32;
828 return ecb_ctz32 (x >> shift) + shift;
829 }
830
831 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const;
832 ecb_function_ int
833 ecb_popcount32 (uint32_t x)
834 {
835 x -= (x >> 1) & 0x55555555;
836 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
837 x = ((x >> 4) + x) & 0x0f0f0f0f;
838 x *= 0x01010101;
839
840 return x >> 24;
841 }
842
843 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const;
844 ecb_function_ int ecb_ld32 (uint32_t x)
845 {
846 int r = 0;
847
848 if (x >> 16) { x >>= 16; r += 16; }
849 if (x >> 8) { x >>= 8; r += 8; }
850 if (x >> 4) { x >>= 4; r += 4; }
851 if (x >> 2) { x >>= 2; r += 2; }
852 if (x >> 1) { r += 1; }
853
854 return r;
855 }
856
857 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const;
858 ecb_function_ int ecb_ld64 (uint64_t x)
859 {
860 int r = 0;
861
862 if (x >> 32) { x >>= 32; r += 32; }
863
864 return r + ecb_ld32 (x);
865 }
866#endif
867
868ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) ecb_const;
869ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
870ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) ecb_const;
871ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
872
873ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const;
874ecb_function_ uint8_t ecb_bitrev8 (uint8_t x)
875{
876 return ( (x * 0x0802U & 0x22110U)
877 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
878}
879
880ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const;
881ecb_function_ uint16_t ecb_bitrev16 (uint16_t x)
882{
883 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
884 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
885 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
886 x = ( x >> 8 ) | ( x << 8);
887
888 return x;
889}
890
891ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const;
892ecb_function_ uint32_t ecb_bitrev32 (uint32_t x)
893{
894 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
895 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
896 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
897 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
898 x = ( x >> 16 ) | ( x << 16);
899
900 return x;
901}
902
903/* popcount64 is only available on 64 bit cpus as gcc builtin */
904/* so for this version we are lazy */
905ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const;
906ecb_function_ int
907ecb_popcount64 (uint64_t x)
908{
909 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
910}
911
912ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const;
913ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const;
914ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const;
915ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const;
916ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const;
917ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const;
918ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const;
919ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const;
920
921ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
922ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
923ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
924ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
925ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
926ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
927ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
928ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
929
930#if ECB_GCC_VERSION(4,3)
931 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
932 #define ecb_bswap32(x) __builtin_bswap32 (x)
933 #define ecb_bswap64(x) __builtin_bswap64 (x)
934#else
935 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const;
936 ecb_function_ uint16_t
937 ecb_bswap16 (uint16_t x)
938 {
939 return ecb_rotl16 (x, 8);
940 }
941
942 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const;
943 ecb_function_ uint32_t
944 ecb_bswap32 (uint32_t x)
945 {
946 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
947 }
948
949 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const;
950 ecb_function_ uint64_t
951 ecb_bswap64 (uint64_t x)
952 {
953 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
954 }
955#endif
956
957#if ECB_GCC_VERSION(4,5)
958 #define ecb_unreachable() __builtin_unreachable ()
959#else
960 /* this seems to work fine, but gcc always emits a warning for it :/ */
961 ecb_inline void ecb_unreachable (void) ecb_noreturn;
962 ecb_inline void ecb_unreachable (void) { }
963#endif
964
965/* try to tell the compiler that some condition is definitely true */
966#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
967
968ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const;
969ecb_inline unsigned char
970ecb_byteorder_helper (void)
971{
972 /* the union code still generates code under pressure in gcc, */
973 /* but less than using pointers, and always seems to */
974 /* successfully return a constant. */
975 /* the reason why we have this horrible preprocessor mess */
976 /* is to avoid it in all cases, at least on common architectures */
977 /* or when using a recent enough gcc version (>= 4.6) */
978#if __i386 || __i386__ || _M_X86 || __amd64 || __amd64__ || _M_X64
979 return 0x44;
980#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
981 return 0x44;
982#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
983 return 0x11;
984#else
985 union
986 {
987 uint32_t i;
988 uint8_t c;
989 } u = { 0x11223344 };
990 return u.c;
991#endif
992}
993
994ecb_inline ecb_bool ecb_big_endian (void) ecb_const;
995ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
996ecb_inline ecb_bool ecb_little_endian (void) ecb_const;
997ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }
998
999#if ECB_GCC_VERSION(3,0) || ECB_C99
1000 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
1001#else
1002 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
1003#endif
1004
1005#if __cplusplus
1006 template<typename T>
1007 static inline T ecb_div_rd (T val, T div)
1008 {
1009 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
1010 }
1011 template<typename T>
1012 static inline T ecb_div_ru (T val, T div)
1013 {
1014 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
1015 }
1016#else
1017 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
1018 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
1019#endif
1020
1021#if ecb_cplusplus_does_not_suck
1022 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
1023 template<typename T, int N>
1024 static inline int ecb_array_length (const T (&arr)[N])
1025 {
1026 return N;
1027 }
1028#else
1029 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
1030#endif
1031
1032/*******************************************************************************/
1033/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1034
1035/* basically, everything uses "ieee pure-endian" floating point numbers */
1036/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1037#if 0 \
1038 || __i386 || __i386__ \
1039 || __amd64 || __amd64__ || __x86_64 || __x86_64__ \
1040 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1041 || defined __arm__ && defined __ARM_EABI__ \
1042 || defined __s390__ || defined __s390x__ \
1043 || defined __mips__ \
1044 || defined __alpha__ \
1045 || defined __hppa__ \
1046 || defined __ia64__ \
1047 || defined _M_IX86 || defined _M_AMD64 || defined _M_IA64
1048 #define ECB_STDFP 1
1049 #include <string.h> /* for memcpy */
1050#else
1051 #define ECB_STDFP 0
1052 #include <math.h> /* for frexp*, ldexp* */
1053#endif
1054
1055#ifndef ECB_NO_LIBM
1056
1057 /* convert a float to ieee single/binary32 */
1058 ecb_function_ uint32_t ecb_float_to_binary32 (float x) ecb_const;
1059 ecb_function_ uint32_t
1060 ecb_float_to_binary32 (float x)
1061 {
1062 uint32_t r;
1063
1064 #if ECB_STDFP
1065 memcpy (&r, &x, 4);
1066 #else
1067 /* slow emulation, works for anything but -0 */
1068 uint32_t m;
1069 int e;
1070
1071 if (x == 0e0f ) return 0x00000000U;
1072 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1073 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1074 if (x != x ) return 0x7fbfffffU;
1075
1076 m = frexpf (x, &e) * 0x1000000U;
1077
1078 r = m & 0x80000000U;
1079
1080 if (r)
1081 m = -m;
1082
1083 if (e <= -126)
1084 {
1085 m &= 0xffffffU;
1086 m >>= (-125 - e);
1087 e = -126;
1088 }
1089
1090 r |= (e + 126) << 23;
1091 r |= m & 0x7fffffU;
1092 #endif
1093
1094 return r;
1095 }
1096
1097 /* converts an ieee single/binary32 to a float */
1098 ecb_function_ float ecb_binary32_to_float (uint32_t x) ecb_const;
1099 ecb_function_ float
1100 ecb_binary32_to_float (uint32_t x)
1101 {
1102 float r;
1103
1104 #if ECB_STDFP
1105 memcpy (&r, &x, 4);
1106 #else
1107 /* emulation, only works for normals and subnormals and +0 */
1108 int neg = x >> 31;
1109 int e = (x >> 23) & 0xffU;
1110
1111 x &= 0x7fffffU;
1112
1113 if (e)
1114 x |= 0x800000U;
1115 else
1116 e = 1;
1117
1118 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1119 r = ldexpf (x * (0.5f / 0x800000U), e - 126);
1120
1121 r = neg ? -r : r;
1122 #endif
1123
1124 return r;
1125 }
1126
1127 /* convert a double to ieee double/binary64 */
1128 ecb_function_ uint64_t ecb_double_to_binary64 (double x) ecb_const;
1129 ecb_function_ uint64_t
1130 ecb_double_to_binary64 (double x)
1131 {
1132 uint64_t r;
1133
1134 #if ECB_STDFP
1135 memcpy (&r, &x, 8);
1136 #else
1137 /* slow emulation, works for anything but -0 */
1138 uint64_t m;
1139 int e;
1140
1141 if (x == 0e0 ) return 0x0000000000000000U;
1142 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1143 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1144 if (x != x ) return 0X7ff7ffffffffffffU;
1145
1146 m = frexp (x, &e) * 0x20000000000000U;
1147
1148 r = m & 0x8000000000000000;;
1149
1150 if (r)
1151 m = -m;
1152
1153 if (e <= -1022)
1154 {
1155 m &= 0x1fffffffffffffU;
1156 m >>= (-1021 - e);
1157 e = -1022;
1158 }
1159
1160 r |= ((uint64_t)(e + 1022)) << 52;
1161 r |= m & 0xfffffffffffffU;
1162 #endif
1163
1164 return r;
1165 }
1166
1167 /* converts an ieee double/binary64 to a double */
1168 ecb_function_ double ecb_binary64_to_double (uint64_t x) ecb_const;
1169 ecb_function_ double
1170 ecb_binary64_to_double (uint64_t x)
1171 {
1172 double r;
1173
1174 #if ECB_STDFP
1175 memcpy (&r, &x, 8);
1176 #else
1177 /* emulation, only works for normals and subnormals and +0 */
1178 int neg = x >> 63;
1179 int e = (x >> 52) & 0x7ffU;
1180
1181 x &= 0xfffffffffffffU;
1182
1183 if (e)
1184 x |= 0x10000000000000U;
1185 else
1186 e = 1;
1187
1188 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1189 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1190
1191 r = neg ? -r : r;
1192 #endif
1193
1194 return r;
1195 }
1196
1197#endif
1198
1199#endif
1200
1201/* ECB.H END */
1202
1203#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
1204/* if your architecture doesn't need memory fences, e.g. because it is
1205 * single-cpu/core, or if you use libev in a project that doesn't use libev
1206 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
1207 * libev, in which cases the memory fences become nops.
1208 * alternatively, you can remove this #error and link against libpthread,
1209 * which will then provide the memory fences.
1210 */
1211# error "memory fences not defined for your architecture, please report"
1212#endif
1213
1214#ifndef ECB_MEMORY_FENCE
1215# define ECB_MEMORY_FENCE do { } while (0)
1216# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1217# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1218#endif
566 1219
567#define expect_false(cond) ecb_expect_false (cond) 1220#define expect_false(cond) ecb_expect_false (cond)
568#define expect_true(cond) ecb_expect_true (cond) 1221#define expect_true(cond) ecb_expect_true (cond)
569#define noinline ecb_noinline 1222#define noinline ecb_noinline
570 1223
716{ 1369{
717 write (STDERR_FILENO, msg, strlen (msg)); 1370 write (STDERR_FILENO, msg, strlen (msg));
718} 1371}
719#endif 1372#endif
720 1373
721static void (*syserr_cb)(const char *msg); 1374static void (*syserr_cb)(const char *msg) EV_THROW;
722 1375
723void ecb_cold 1376void ecb_cold
724ev_set_syserr_cb (void (*cb)(const char *msg)) 1377ev_set_syserr_cb (void (*cb)(const char *msg) EV_THROW) EV_THROW
725{ 1378{
726 syserr_cb = cb; 1379 syserr_cb = cb;
727} 1380}
728 1381
729static void noinline ecb_cold 1382static void noinline ecb_cold
747 abort (); 1400 abort ();
748 } 1401 }
749} 1402}
750 1403
751static void * 1404static void *
752ev_realloc_emul (void *ptr, long size) 1405ev_realloc_emul (void *ptr, long size) EV_THROW
753{ 1406{
754#if __GLIBC__
755 return realloc (ptr, size);
756#else
757 /* some systems, notably openbsd and darwin, fail to properly 1407 /* some systems, notably openbsd and darwin, fail to properly
758 * implement realloc (x, 0) (as required by both ansi c-89 and 1408 * implement realloc (x, 0) (as required by both ansi c-89 and
759 * the single unix specification, so work around them here. 1409 * the single unix specification, so work around them here.
1410 * recently, also (at least) fedora and debian started breaking it,
1411 * despite documenting it otherwise.
760 */ 1412 */
761 1413
762 if (size) 1414 if (size)
763 return realloc (ptr, size); 1415 return realloc (ptr, size);
764 1416
765 free (ptr); 1417 free (ptr);
766 return 0; 1418 return 0;
767#endif
768} 1419}
769 1420
770static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1421static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;
771 1422
772void ecb_cold 1423void ecb_cold
773ev_set_allocator (void *(*cb)(void *ptr, long size)) 1424ev_set_allocator (void *(*cb)(void *ptr, long size) EV_THROW) EV_THROW
774{ 1425{
775 alloc = cb; 1426 alloc = cb;
776} 1427}
777 1428
778inline_speed void * 1429inline_speed void *
866 #undef VAR 1517 #undef VAR
867 }; 1518 };
868 #include "ev_wrap.h" 1519 #include "ev_wrap.h"
869 1520
870 static struct ev_loop default_loop_struct; 1521 static struct ev_loop default_loop_struct;
871 struct ev_loop *ev_default_loop_ptr; 1522 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
872 1523
873#else 1524#else
874 1525
875 ev_tstamp ev_rt_now; 1526 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; 1527 #define VAR(name,decl) static decl;
877 #include "ev_vars.h" 1528 #include "ev_vars.h"
878 #undef VAR 1529 #undef VAR
879 1530
880 static int ev_default_loop_ptr; 1531 static int ev_default_loop_ptr;
895 1546
896/*****************************************************************************/ 1547/*****************************************************************************/
897 1548
898#ifndef EV_HAVE_EV_TIME 1549#ifndef EV_HAVE_EV_TIME
899ev_tstamp 1550ev_tstamp
900ev_time (void) 1551ev_time (void) EV_THROW
901{ 1552{
902#if EV_USE_REALTIME 1553#if EV_USE_REALTIME
903 if (expect_true (have_realtime)) 1554 if (expect_true (have_realtime))
904 { 1555 {
905 struct timespec ts; 1556 struct timespec ts;
929 return ev_time (); 1580 return ev_time ();
930} 1581}
931 1582
932#if EV_MULTIPLICITY 1583#if EV_MULTIPLICITY
933ev_tstamp 1584ev_tstamp
934ev_now (EV_P) 1585ev_now (EV_P) EV_THROW
935{ 1586{
936 return ev_rt_now; 1587 return ev_rt_now;
937} 1588}
938#endif 1589#endif
939 1590
940void 1591void
941ev_sleep (ev_tstamp delay) 1592ev_sleep (ev_tstamp delay) EV_THROW
942{ 1593{
943 if (delay > 0.) 1594 if (delay > 0.)
944 { 1595 {
945#if EV_USE_NANOSLEEP 1596#if EV_USE_NANOSLEEP
946 struct timespec ts; 1597 struct timespec ts;
947 1598
948 EV_TS_SET (ts, delay); 1599 EV_TS_SET (ts, delay);
949 nanosleep (&ts, 0); 1600 nanosleep (&ts, 0);
950#elif defined(_WIN32) 1601#elif defined _WIN32
951 Sleep ((unsigned long)(delay * 1e3)); 1602 Sleep ((unsigned long)(delay * 1e3));
952#else 1603#else
953 struct timeval tv; 1604 struct timeval tv;
954 1605
955 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1606 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
974 1625
975 do 1626 do
976 ncur <<= 1; 1627 ncur <<= 1;
977 while (cnt > ncur); 1628 while (cnt > ncur);
978 1629
979 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1630 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
980 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1631 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
981 { 1632 {
982 ncur *= elem; 1633 ncur *= elem;
983 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1634 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
984 ncur = ncur - sizeof (void *) * 4; 1635 ncur = ncur - sizeof (void *) * 4;
1027pendingcb (EV_P_ ev_prepare *w, int revents) 1678pendingcb (EV_P_ ev_prepare *w, int revents)
1028{ 1679{
1029} 1680}
1030 1681
1031void noinline 1682void noinline
1032ev_feed_event (EV_P_ void *w, int revents) 1683ev_feed_event (EV_P_ void *w, int revents) EV_THROW
1033{ 1684{
1034 W w_ = (W)w; 1685 W w_ = (W)w;
1035 int pri = ABSPRI (w_); 1686 int pri = ABSPRI (w_);
1036 1687
1037 if (expect_false (w_->pending)) 1688 if (expect_false (w_->pending))
1041 w_->pending = ++pendingcnt [pri]; 1692 w_->pending = ++pendingcnt [pri];
1042 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 1693 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
1043 pendings [pri][w_->pending - 1].w = w_; 1694 pendings [pri][w_->pending - 1].w = w_;
1044 pendings [pri][w_->pending - 1].events = revents; 1695 pendings [pri][w_->pending - 1].events = revents;
1045 } 1696 }
1697
1698 pendingpri = NUMPRI - 1;
1046} 1699}
1047 1700
1048inline_speed void 1701inline_speed void
1049feed_reverse (EV_P_ W w) 1702feed_reverse (EV_P_ W w)
1050{ 1703{
1096 if (expect_true (!anfd->reify)) 1749 if (expect_true (!anfd->reify))
1097 fd_event_nocheck (EV_A_ fd, revents); 1750 fd_event_nocheck (EV_A_ fd, revents);
1098} 1751}
1099 1752
1100void 1753void
1101ev_feed_fd_event (EV_P_ int fd, int revents) 1754ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW
1102{ 1755{
1103 if (fd >= 0 && fd < anfdmax) 1756 if (fd >= 0 && fd < anfdmax)
1104 fd_event_nocheck (EV_A_ fd, revents); 1757 fd_event_nocheck (EV_A_ fd, revents);
1105} 1758}
1106 1759
1425static void noinline ecb_cold 2078static void noinline ecb_cold
1426evpipe_init (EV_P) 2079evpipe_init (EV_P)
1427{ 2080{
1428 if (!ev_is_active (&pipe_w)) 2081 if (!ev_is_active (&pipe_w))
1429 { 2082 {
2083 int fds [2];
2084
1430# if EV_USE_EVENTFD 2085# if EV_USE_EVENTFD
2086 fds [0] = -1;
1431 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2087 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1432 if (evfd < 0 && errno == EINVAL) 2088 if (fds [1] < 0 && errno == EINVAL)
1433 evfd = eventfd (0, 0); 2089 fds [1] = eventfd (0, 0);
1434 2090
1435 if (evfd >= 0) 2091 if (fds [1] < 0)
2092# endif
1436 { 2093 {
2094 while (pipe (fds))
2095 ev_syserr ("(libev) error creating signal/async pipe");
2096
2097 fd_intern (fds [0]);
2098 }
2099
2100 fd_intern (fds [1]);
2101
1437 evpipe [0] = -1; 2102 evpipe [0] = fds [0];
1438 fd_intern (evfd); /* doing it twice doesn't hurt */ 2103
1439 ev_io_set (&pipe_w, evfd, EV_READ); 2104 if (evpipe [1] < 0)
2105 evpipe [1] = fds [1]; /* first call, set write fd */
2106 else
2107 {
2108 /* on subsequent calls, do not change evpipe [1] */
2109 /* so that evpipe_write can always rely on its value. */
2110 /* this branch does not do anything sensible on windows, */
2111 /* so must not be executed on windows */
2112
2113 dup2 (fds [1], evpipe [1]);
2114 close (fds [1]);
2115 }
2116
2117 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2118 ev_io_start (EV_A_ &pipe_w);
2119 ev_unref (EV_A); /* watcher should not keep loop alive */
2120 }
2121}
2122
2123inline_speed void
2124evpipe_write (EV_P_ EV_ATOMIC_T *flag)
2125{
2126 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
2127
2128 if (expect_true (*flag))
2129 return;
2130
2131 *flag = 1;
2132 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2133
2134 pipe_write_skipped = 1;
2135
2136 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2137
2138 if (pipe_write_wanted)
2139 {
2140 int old_errno;
2141
2142 pipe_write_skipped = 0;
2143 ECB_MEMORY_FENCE_RELEASE;
2144
2145 old_errno = errno; /* save errno because write will clobber it */
2146
2147#if EV_USE_EVENTFD
2148 if (evpipe [0] < 0)
2149 {
2150 uint64_t counter = 1;
2151 write (evpipe [1], &counter, sizeof (uint64_t));
1440 } 2152 }
1441 else 2153 else
1442# endif 2154#endif
1443 { 2155 {
1444 while (pipe (evpipe)) 2156#ifdef _WIN32
1445 ev_syserr ("(libev) error creating signal/async pipe"); 2157 WSABUF buf;
1446 2158 DWORD sent;
1447 fd_intern (evpipe [0]); 2159 buf.buf = &buf;
1448 fd_intern (evpipe [1]); 2160 buf.len = 1;
1449 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2161 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
1450 } 2162#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;
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); 2163 write (evpipe [1], &(evpipe [1]), 1);
2164#endif
1494 } 2165 }
1495 2166
1496 errno = old_errno; 2167 errno = old_errno;
1497 } 2168 }
1498} 2169}
1505 int i; 2176 int i;
1506 2177
1507 if (revents & EV_READ) 2178 if (revents & EV_READ)
1508 { 2179 {
1509#if EV_USE_EVENTFD 2180#if EV_USE_EVENTFD
1510 if (evfd >= 0) 2181 if (evpipe [0] < 0)
1511 { 2182 {
1512 uint64_t counter; 2183 uint64_t counter;
1513 read (evfd, &counter, sizeof (uint64_t)); 2184 read (evpipe [1], &counter, sizeof (uint64_t));
1514 } 2185 }
1515 else 2186 else
1516#endif 2187#endif
1517 { 2188 {
1518 char dummy; 2189 char dummy[4];
1519 /* see discussion in evpipe_write when you think this read should be recv in win32 */ 2190#ifdef _WIN32
2191 WSABUF buf;
2192 DWORD recvd;
2193 DWORD flags = 0;
2194 buf.buf = dummy;
2195 buf.len = sizeof (dummy);
2196 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2197#else
1520 read (evpipe [0], &dummy, 1); 2198 read (evpipe [0], &dummy, sizeof (dummy));
2199#endif
1521 } 2200 }
1522 } 2201 }
1523 2202
1524 pipe_write_skipped = 0; 2203 pipe_write_skipped = 0;
2204
2205 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
1525 2206
1526#if EV_SIGNAL_ENABLE 2207#if EV_SIGNAL_ENABLE
1527 if (sig_pending) 2208 if (sig_pending)
1528 { 2209 {
1529 sig_pending = 0; 2210 sig_pending = 0;
2211
2212 ECB_MEMORY_FENCE;
1530 2213
1531 for (i = EV_NSIG - 1; i--; ) 2214 for (i = EV_NSIG - 1; i--; )
1532 if (expect_false (signals [i].pending)) 2215 if (expect_false (signals [i].pending))
1533 ev_feed_signal_event (EV_A_ i + 1); 2216 ev_feed_signal_event (EV_A_ i + 1);
1534 } 2217 }
1536 2219
1537#if EV_ASYNC_ENABLE 2220#if EV_ASYNC_ENABLE
1538 if (async_pending) 2221 if (async_pending)
1539 { 2222 {
1540 async_pending = 0; 2223 async_pending = 0;
2224
2225 ECB_MEMORY_FENCE;
1541 2226
1542 for (i = asynccnt; i--; ) 2227 for (i = asynccnt; i--; )
1543 if (asyncs [i]->sent) 2228 if (asyncs [i]->sent)
1544 { 2229 {
1545 asyncs [i]->sent = 0; 2230 asyncs [i]->sent = 0;
2231 ECB_MEMORY_FENCE_RELEASE;
1546 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2232 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1547 } 2233 }
1548 } 2234 }
1549#endif 2235#endif
1550} 2236}
1551 2237
1552/*****************************************************************************/ 2238/*****************************************************************************/
1553 2239
1554void 2240void
1555ev_feed_signal (int signum) 2241ev_feed_signal (int signum) EV_THROW
1556{ 2242{
1557#if EV_MULTIPLICITY 2243#if EV_MULTIPLICITY
2244 ECB_MEMORY_FENCE_ACQUIRE;
1558 EV_P = signals [signum - 1].loop; 2245 EV_P = signals [signum - 1].loop;
1559 2246
1560 if (!EV_A) 2247 if (!EV_A)
1561 return; 2248 return;
1562#endif 2249#endif
1563 2250
1564 if (!ev_active (&pipe_w))
1565 return;
1566
1567 signals [signum - 1].pending = 1; 2251 signals [signum - 1].pending = 1;
1568 evpipe_write (EV_A_ &sig_pending); 2252 evpipe_write (EV_A_ &sig_pending);
1569} 2253}
1570 2254
1571static void 2255static void
1577 2261
1578 ev_feed_signal (signum); 2262 ev_feed_signal (signum);
1579} 2263}
1580 2264
1581void noinline 2265void noinline
1582ev_feed_signal_event (EV_P_ int signum) 2266ev_feed_signal_event (EV_P_ int signum) EV_THROW
1583{ 2267{
1584 WL w; 2268 WL w;
1585 2269
1586 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2270 if (expect_false (signum <= 0 || signum >= EV_NSIG))
1587 return; 2271 return;
1588 2272
1589 --signum; 2273 --signum;
1590 2274
1591#if EV_MULTIPLICITY 2275#if EV_MULTIPLICITY
1595 if (expect_false (signals [signum].loop != EV_A)) 2279 if (expect_false (signals [signum].loop != EV_A))
1596 return; 2280 return;
1597#endif 2281#endif
1598 2282
1599 signals [signum].pending = 0; 2283 signals [signum].pending = 0;
2284 ECB_MEMORY_FENCE_RELEASE;
1600 2285
1601 for (w = signals [signum].head; w; w = w->next) 2286 for (w = signals [signum].head; w; w = w->next)
1602 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2287 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1603} 2288}
1604 2289
1703#if EV_USE_SELECT 2388#if EV_USE_SELECT
1704# include "ev_select.c" 2389# include "ev_select.c"
1705#endif 2390#endif
1706 2391
1707int ecb_cold 2392int ecb_cold
1708ev_version_major (void) 2393ev_version_major (void) EV_THROW
1709{ 2394{
1710 return EV_VERSION_MAJOR; 2395 return EV_VERSION_MAJOR;
1711} 2396}
1712 2397
1713int ecb_cold 2398int ecb_cold
1714ev_version_minor (void) 2399ev_version_minor (void) EV_THROW
1715{ 2400{
1716 return EV_VERSION_MINOR; 2401 return EV_VERSION_MINOR;
1717} 2402}
1718 2403
1719/* return true if we are running with elevated privileges and should ignore env variables */ 2404/* return true if we are running with elevated privileges and should ignore env variables */
1727 || getgid () != getegid (); 2412 || getgid () != getegid ();
1728#endif 2413#endif
1729} 2414}
1730 2415
1731unsigned int ecb_cold 2416unsigned int ecb_cold
1732ev_supported_backends (void) 2417ev_supported_backends (void) EV_THROW
1733{ 2418{
1734 unsigned int flags = 0; 2419 unsigned int flags = 0;
1735 2420
1736 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2421 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1737 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2422 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
1741 2426
1742 return flags; 2427 return flags;
1743} 2428}
1744 2429
1745unsigned int ecb_cold 2430unsigned int ecb_cold
1746ev_recommended_backends (void) 2431ev_recommended_backends (void) EV_THROW
1747{ 2432{
1748 unsigned int flags = ev_supported_backends (); 2433 unsigned int flags = ev_supported_backends ();
1749 2434
1750#ifndef __NetBSD__ 2435#ifndef __NetBSD__
1751 /* kqueue is borked on everything but netbsd apparently */ 2436 /* kqueue is borked on everything but netbsd apparently */
1763 2448
1764 return flags; 2449 return flags;
1765} 2450}
1766 2451
1767unsigned int ecb_cold 2452unsigned int ecb_cold
1768ev_embeddable_backends (void) 2453ev_embeddable_backends (void) EV_THROW
1769{ 2454{
1770 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2455 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1771 2456
1772 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2457 /* 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 */ 2458 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1775 2460
1776 return flags; 2461 return flags;
1777} 2462}
1778 2463
1779unsigned int 2464unsigned int
1780ev_backend (EV_P) 2465ev_backend (EV_P) EV_THROW
1781{ 2466{
1782 return backend; 2467 return backend;
1783} 2468}
1784 2469
1785#if EV_FEATURE_API 2470#if EV_FEATURE_API
1786unsigned int 2471unsigned int
1787ev_iteration (EV_P) 2472ev_iteration (EV_P) EV_THROW
1788{ 2473{
1789 return loop_count; 2474 return loop_count;
1790} 2475}
1791 2476
1792unsigned int 2477unsigned int
1793ev_depth (EV_P) 2478ev_depth (EV_P) EV_THROW
1794{ 2479{
1795 return loop_depth; 2480 return loop_depth;
1796} 2481}
1797 2482
1798void 2483void
1799ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2484ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1800{ 2485{
1801 io_blocktime = interval; 2486 io_blocktime = interval;
1802} 2487}
1803 2488
1804void 2489void
1805ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2490ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1806{ 2491{
1807 timeout_blocktime = interval; 2492 timeout_blocktime = interval;
1808} 2493}
1809 2494
1810void 2495void
1811ev_set_userdata (EV_P_ void *data) 2496ev_set_userdata (EV_P_ void *data) EV_THROW
1812{ 2497{
1813 userdata = data; 2498 userdata = data;
1814} 2499}
1815 2500
1816void * 2501void *
1817ev_userdata (EV_P) 2502ev_userdata (EV_P) EV_THROW
1818{ 2503{
1819 return userdata; 2504 return userdata;
1820} 2505}
1821 2506
1822void 2507void
1823ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2508ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) EV_THROW
1824{ 2509{
1825 invoke_cb = invoke_pending_cb; 2510 invoke_cb = invoke_pending_cb;
1826} 2511}
1827 2512
1828void 2513void
1829ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2514ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_THROW, void (*acquire)(EV_P) EV_THROW) EV_THROW
1830{ 2515{
1831 release_cb = release; 2516 release_cb = release;
1832 acquire_cb = acquire; 2517 acquire_cb = acquire;
1833} 2518}
1834#endif 2519#endif
1835 2520
1836/* initialise a loop structure, must be zero-initialised */ 2521/* initialise a loop structure, must be zero-initialised */
1837static void noinline ecb_cold 2522static void noinline ecb_cold
1838loop_init (EV_P_ unsigned int flags) 2523loop_init (EV_P_ unsigned int flags) EV_THROW
1839{ 2524{
1840 if (!backend) 2525 if (!backend)
1841 { 2526 {
1842 origflags = flags; 2527 origflags = flags;
1843 2528
1888#if EV_ASYNC_ENABLE 2573#if EV_ASYNC_ENABLE
1889 async_pending = 0; 2574 async_pending = 0;
1890#endif 2575#endif
1891 pipe_write_skipped = 0; 2576 pipe_write_skipped = 0;
1892 pipe_write_wanted = 0; 2577 pipe_write_wanted = 0;
2578 evpipe [0] = -1;
2579 evpipe [1] = -1;
1893#if EV_USE_INOTIFY 2580#if EV_USE_INOTIFY
1894 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 2581 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1895#endif 2582#endif
1896#if EV_USE_SIGNALFD 2583#if EV_USE_SIGNALFD
1897 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 2584 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1948 EV_INVOKE_PENDING; 2635 EV_INVOKE_PENDING;
1949 } 2636 }
1950#endif 2637#endif
1951 2638
1952#if EV_CHILD_ENABLE 2639#if EV_CHILD_ENABLE
1953 if (ev_is_active (&childev)) 2640 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
1954 { 2641 {
1955 ev_ref (EV_A); /* child watcher */ 2642 ev_ref (EV_A); /* child watcher */
1956 ev_signal_stop (EV_A_ &childev); 2643 ev_signal_stop (EV_A_ &childev);
1957 } 2644 }
1958#endif 2645#endif
1960 if (ev_is_active (&pipe_w)) 2647 if (ev_is_active (&pipe_w))
1961 { 2648 {
1962 /*ev_ref (EV_A);*/ 2649 /*ev_ref (EV_A);*/
1963 /*ev_io_stop (EV_A_ &pipe_w);*/ 2650 /*ev_io_stop (EV_A_ &pipe_w);*/
1964 2651
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]); 2652 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
1973 EV_WIN32_CLOSE_FD (evpipe [1]); 2653 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
1974 }
1975 } 2654 }
1976 2655
1977#if EV_USE_SIGNALFD 2656#if EV_USE_SIGNALFD
1978 if (ev_is_active (&sigfd_w)) 2657 if (ev_is_active (&sigfd_w))
1979 close (sigfd); 2658 close (sigfd);
2065#endif 2744#endif
2066#if EV_USE_INOTIFY 2745#if EV_USE_INOTIFY
2067 infy_fork (EV_A); 2746 infy_fork (EV_A);
2068#endif 2747#endif
2069 2748
2749#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2070 if (ev_is_active (&pipe_w)) 2750 if (ev_is_active (&pipe_w))
2071 { 2751 {
2072 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */ 2752 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
2073 2753
2074 ev_ref (EV_A); 2754 ev_ref (EV_A);
2075 ev_io_stop (EV_A_ &pipe_w); 2755 ev_io_stop (EV_A_ &pipe_w);
2076 2756
2077#if EV_USE_EVENTFD
2078 if (evfd >= 0)
2079 close (evfd);
2080#endif
2081
2082 if (evpipe [0] >= 0) 2757 if (evpipe [0] >= 0)
2083 {
2084 EV_WIN32_CLOSE_FD (evpipe [0]); 2758 EV_WIN32_CLOSE_FD (evpipe [0]);
2085 EV_WIN32_CLOSE_FD (evpipe [1]);
2086 }
2087 2759
2088#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2089 evpipe_init (EV_A); 2760 evpipe_init (EV_A);
2090 /* now iterate over everything, in case we missed something */ 2761 /* iterate over everything, in case we missed something before */
2091 pipecb (EV_A_ &pipe_w, EV_READ); 2762 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2092#endif
2093 } 2763 }
2764#endif
2094 2765
2095 postfork = 0; 2766 postfork = 0;
2096} 2767}
2097 2768
2098#if EV_MULTIPLICITY 2769#if EV_MULTIPLICITY
2099 2770
2100struct ev_loop * ecb_cold 2771struct ev_loop * ecb_cold
2101ev_loop_new (unsigned int flags) 2772ev_loop_new (unsigned int flags) EV_THROW
2102{ 2773{
2103 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2774 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
2104 2775
2105 memset (EV_A, 0, sizeof (struct ev_loop)); 2776 memset (EV_A, 0, sizeof (struct ev_loop));
2106 loop_init (EV_A_ flags); 2777 loop_init (EV_A_ flags);
2150} 2821}
2151#endif 2822#endif
2152 2823
2153#if EV_FEATURE_API 2824#if EV_FEATURE_API
2154void ecb_cold 2825void ecb_cold
2155ev_verify (EV_P) 2826ev_verify (EV_P) EV_THROW
2156{ 2827{
2157#if EV_VERIFY 2828#if EV_VERIFY
2158 int i; 2829 int i;
2159 WL w; 2830 WL w, w2;
2160 2831
2161 assert (activecnt >= -1); 2832 assert (activecnt >= -1);
2162 2833
2163 assert (fdchangemax >= fdchangecnt); 2834 assert (fdchangemax >= fdchangecnt);
2164 for (i = 0; i < fdchangecnt; ++i) 2835 for (i = 0; i < fdchangecnt; ++i)
2165 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 2836 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
2166 2837
2167 assert (anfdmax >= 0); 2838 assert (anfdmax >= 0);
2168 for (i = 0; i < anfdmax; ++i) 2839 for (i = 0; i < anfdmax; ++i)
2840 {
2841 int j = 0;
2842
2169 for (w = anfds [i].head; w; w = w->next) 2843 for (w = w2 = anfds [i].head; w; w = w->next)
2170 { 2844 {
2171 verify_watcher (EV_A_ (W)w); 2845 verify_watcher (EV_A_ (W)w);
2846
2847 if (j++ & 1)
2848 {
2849 assert (("libev: io watcher list contains a loop", w != w2));
2850 w2 = w2->next;
2851 }
2852
2172 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 2853 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)); 2854 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
2174 } 2855 }
2856 }
2175 2857
2176 assert (timermax >= timercnt); 2858 assert (timermax >= timercnt);
2177 verify_heap (EV_A_ timers, timercnt); 2859 verify_heap (EV_A_ timers, timercnt);
2178 2860
2179#if EV_PERIODIC_ENABLE 2861#if EV_PERIODIC_ENABLE
2229#if EV_MULTIPLICITY 2911#if EV_MULTIPLICITY
2230struct ev_loop * ecb_cold 2912struct ev_loop * ecb_cold
2231#else 2913#else
2232int 2914int
2233#endif 2915#endif
2234ev_default_loop (unsigned int flags) 2916ev_default_loop (unsigned int flags) EV_THROW
2235{ 2917{
2236 if (!ev_default_loop_ptr) 2918 if (!ev_default_loop_ptr)
2237 { 2919 {
2238#if EV_MULTIPLICITY 2920#if EV_MULTIPLICITY
2239 EV_P = ev_default_loop_ptr = &default_loop_struct; 2921 EV_P = ev_default_loop_ptr = &default_loop_struct;
2258 2940
2259 return ev_default_loop_ptr; 2941 return ev_default_loop_ptr;
2260} 2942}
2261 2943
2262void 2944void
2263ev_loop_fork (EV_P) 2945ev_loop_fork (EV_P) EV_THROW
2264{ 2946{
2265 postfork = 1; /* must be in line with ev_default_fork */ 2947 postfork = 1;
2266} 2948}
2267 2949
2268/*****************************************************************************/ 2950/*****************************************************************************/
2269 2951
2270void 2952void
2272{ 2954{
2273 EV_CB_INVOKE ((W)w, revents); 2955 EV_CB_INVOKE ((W)w, revents);
2274} 2956}
2275 2957
2276unsigned int 2958unsigned int
2277ev_pending_count (EV_P) 2959ev_pending_count (EV_P) EV_THROW
2278{ 2960{
2279 int pri; 2961 int pri;
2280 unsigned int count = 0; 2962 unsigned int count = 0;
2281 2963
2282 for (pri = NUMPRI; pri--; ) 2964 for (pri = NUMPRI; pri--; )
2286} 2968}
2287 2969
2288void noinline 2970void noinline
2289ev_invoke_pending (EV_P) 2971ev_invoke_pending (EV_P)
2290{ 2972{
2291 int pri; 2973 pendingpri = NUMPRI;
2292 2974
2293 for (pri = NUMPRI; pri--; ) 2975 while (pendingpri) /* pendingpri possibly gets modified in the inner loop */
2976 {
2977 --pendingpri;
2978
2294 while (pendingcnt [pri]) 2979 while (pendingcnt [pendingpri])
2295 { 2980 {
2296 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2981 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2297 2982
2298 p->w->pending = 0; 2983 p->w->pending = 0;
2299 EV_CB_INVOKE (p->w, p->events); 2984 EV_CB_INVOKE (p->w, p->events);
2300 EV_FREQUENT_CHECK; 2985 EV_FREQUENT_CHECK;
2301 } 2986 }
2987 }
2302} 2988}
2303 2989
2304#if EV_IDLE_ENABLE 2990#if EV_IDLE_ENABLE
2305/* make idle watchers pending. this handles the "call-idle */ 2991/* make idle watchers pending. this handles the "call-idle */
2306/* only when higher priorities are idle" logic */ 2992/* only when higher priorities are idle" logic */
2396{ 3082{
2397 EV_FREQUENT_CHECK; 3083 EV_FREQUENT_CHECK;
2398 3084
2399 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3085 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2400 { 3086 {
2401 int feed_count = 0;
2402
2403 do 3087 do
2404 { 3088 {
2405 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3089 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2406 3090
2407 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3091 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
2541 3225
2542 mn_now = ev_rt_now; 3226 mn_now = ev_rt_now;
2543 } 3227 }
2544} 3228}
2545 3229
2546void 3230int
2547ev_run (EV_P_ int flags) 3231ev_run (EV_P_ int flags)
2548{ 3232{
2549#if EV_FEATURE_API 3233#if EV_FEATURE_API
2550 ++loop_depth; 3234 ++loop_depth;
2551#endif 3235#endif
2612 time_update (EV_A_ 1e100); 3296 time_update (EV_A_ 1e100);
2613 3297
2614 /* from now on, we want a pipe-wake-up */ 3298 /* from now on, we want a pipe-wake-up */
2615 pipe_write_wanted = 1; 3299 pipe_write_wanted = 1;
2616 3300
2617 ECB_MEMORY_FENCE; /* amke sure pipe_write_wanted is visible before we check for potential skips */ 3301 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
2618 3302
2619 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped))) 3303 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2620 { 3304 {
2621 waittime = MAX_BLOCKTIME; 3305 waittime = MAX_BLOCKTIME;
2622 3306
2664#endif 3348#endif
2665 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */ 3349 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2666 backend_poll (EV_A_ waittime); 3350 backend_poll (EV_A_ waittime);
2667 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */ 3351 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2668 3352
2669 pipe_write_wanted = 0; /* just an optimsiation, no fence needed */ 3353 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
2670 3354
3355 ECB_MEMORY_FENCE_ACQUIRE;
2671 if (pipe_write_skipped) 3356 if (pipe_write_skipped)
2672 { 3357 {
2673 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w))); 3358 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); 3359 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2675 } 3360 }
2708 loop_done = EVBREAK_CANCEL; 3393 loop_done = EVBREAK_CANCEL;
2709 3394
2710#if EV_FEATURE_API 3395#if EV_FEATURE_API
2711 --loop_depth; 3396 --loop_depth;
2712#endif 3397#endif
3398
3399 return activecnt;
2713} 3400}
2714 3401
2715void 3402void
2716ev_break (EV_P_ int how) 3403ev_break (EV_P_ int how) EV_THROW
2717{ 3404{
2718 loop_done = how; 3405 loop_done = how;
2719} 3406}
2720 3407
2721void 3408void
2722ev_ref (EV_P) 3409ev_ref (EV_P) EV_THROW
2723{ 3410{
2724 ++activecnt; 3411 ++activecnt;
2725} 3412}
2726 3413
2727void 3414void
2728ev_unref (EV_P) 3415ev_unref (EV_P) EV_THROW
2729{ 3416{
2730 --activecnt; 3417 --activecnt;
2731} 3418}
2732 3419
2733void 3420void
2734ev_now_update (EV_P) 3421ev_now_update (EV_P) EV_THROW
2735{ 3422{
2736 time_update (EV_A_ 1e100); 3423 time_update (EV_A_ 1e100);
2737} 3424}
2738 3425
2739void 3426void
2740ev_suspend (EV_P) 3427ev_suspend (EV_P) EV_THROW
2741{ 3428{
2742 ev_now_update (EV_A); 3429 ev_now_update (EV_A);
2743} 3430}
2744 3431
2745void 3432void
2746ev_resume (EV_P) 3433ev_resume (EV_P) EV_THROW
2747{ 3434{
2748 ev_tstamp mn_prev = mn_now; 3435 ev_tstamp mn_prev = mn_now;
2749 3436
2750 ev_now_update (EV_A); 3437 ev_now_update (EV_A);
2751 timers_reschedule (EV_A_ mn_now - mn_prev); 3438 timers_reschedule (EV_A_ mn_now - mn_prev);
2790 w->pending = 0; 3477 w->pending = 0;
2791 } 3478 }
2792} 3479}
2793 3480
2794int 3481int
2795ev_clear_pending (EV_P_ void *w) 3482ev_clear_pending (EV_P_ void *w) EV_THROW
2796{ 3483{
2797 W w_ = (W)w; 3484 W w_ = (W)w;
2798 int pending = w_->pending; 3485 int pending = w_->pending;
2799 3486
2800 if (expect_true (pending)) 3487 if (expect_true (pending))
2833} 3520}
2834 3521
2835/*****************************************************************************/ 3522/*****************************************************************************/
2836 3523
2837void noinline 3524void noinline
2838ev_io_start (EV_P_ ev_io *w) 3525ev_io_start (EV_P_ ev_io *w) EV_THROW
2839{ 3526{
2840 int fd = w->fd; 3527 int fd = w->fd;
2841 3528
2842 if (expect_false (ev_is_active (w))) 3529 if (expect_false (ev_is_active (w)))
2843 return; 3530 return;
2849 3536
2850 ev_start (EV_A_ (W)w, 1); 3537 ev_start (EV_A_ (W)w, 1);
2851 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3538 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2852 wlist_add (&anfds[fd].head, (WL)w); 3539 wlist_add (&anfds[fd].head, (WL)w);
2853 3540
3541 /* common bug, apparently */
3542 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3543
2854 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 3544 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2855 w->events &= ~EV__IOFDSET; 3545 w->events &= ~EV__IOFDSET;
2856 3546
2857 EV_FREQUENT_CHECK; 3547 EV_FREQUENT_CHECK;
2858} 3548}
2859 3549
2860void noinline 3550void noinline
2861ev_io_stop (EV_P_ ev_io *w) 3551ev_io_stop (EV_P_ ev_io *w) EV_THROW
2862{ 3552{
2863 clear_pending (EV_A_ (W)w); 3553 clear_pending (EV_A_ (W)w);
2864 if (expect_false (!ev_is_active (w))) 3554 if (expect_false (!ev_is_active (w)))
2865 return; 3555 return;
2866 3556
2875 3565
2876 EV_FREQUENT_CHECK; 3566 EV_FREQUENT_CHECK;
2877} 3567}
2878 3568
2879void noinline 3569void noinline
2880ev_timer_start (EV_P_ ev_timer *w) 3570ev_timer_start (EV_P_ ev_timer *w) EV_THROW
2881{ 3571{
2882 if (expect_false (ev_is_active (w))) 3572 if (expect_false (ev_is_active (w)))
2883 return; 3573 return;
2884 3574
2885 ev_at (w) += mn_now; 3575 ev_at (w) += mn_now;
2899 3589
2900 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3590 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2901} 3591}
2902 3592
2903void noinline 3593void noinline
2904ev_timer_stop (EV_P_ ev_timer *w) 3594ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
2905{ 3595{
2906 clear_pending (EV_A_ (W)w); 3596 clear_pending (EV_A_ (W)w);
2907 if (expect_false (!ev_is_active (w))) 3597 if (expect_false (!ev_is_active (w)))
2908 return; 3598 return;
2909 3599
2929 3619
2930 EV_FREQUENT_CHECK; 3620 EV_FREQUENT_CHECK;
2931} 3621}
2932 3622
2933void noinline 3623void noinline
2934ev_timer_again (EV_P_ ev_timer *w) 3624ev_timer_again (EV_P_ ev_timer *w) EV_THROW
2935{ 3625{
2936 EV_FREQUENT_CHECK; 3626 EV_FREQUENT_CHECK;
3627
3628 clear_pending (EV_A_ (W)w);
2937 3629
2938 if (ev_is_active (w)) 3630 if (ev_is_active (w))
2939 { 3631 {
2940 if (w->repeat) 3632 if (w->repeat)
2941 { 3633 {
2954 3646
2955 EV_FREQUENT_CHECK; 3647 EV_FREQUENT_CHECK;
2956} 3648}
2957 3649
2958ev_tstamp 3650ev_tstamp
2959ev_timer_remaining (EV_P_ ev_timer *w) 3651ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW
2960{ 3652{
2961 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 3653 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2962} 3654}
2963 3655
2964#if EV_PERIODIC_ENABLE 3656#if EV_PERIODIC_ENABLE
2965void noinline 3657void noinline
2966ev_periodic_start (EV_P_ ev_periodic *w) 3658ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
2967{ 3659{
2968 if (expect_false (ev_is_active (w))) 3660 if (expect_false (ev_is_active (w)))
2969 return; 3661 return;
2970 3662
2971 if (w->reschedule_cb) 3663 if (w->reschedule_cb)
2991 3683
2992 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 3684 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2993} 3685}
2994 3686
2995void noinline 3687void noinline
2996ev_periodic_stop (EV_P_ ev_periodic *w) 3688ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
2997{ 3689{
2998 clear_pending (EV_A_ (W)w); 3690 clear_pending (EV_A_ (W)w);
2999 if (expect_false (!ev_is_active (w))) 3691 if (expect_false (!ev_is_active (w)))
3000 return; 3692 return;
3001 3693
3019 3711
3020 EV_FREQUENT_CHECK; 3712 EV_FREQUENT_CHECK;
3021} 3713}
3022 3714
3023void noinline 3715void noinline
3024ev_periodic_again (EV_P_ ev_periodic *w) 3716ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
3025{ 3717{
3026 /* TODO: use adjustheap and recalculation */ 3718 /* TODO: use adjustheap and recalculation */
3027 ev_periodic_stop (EV_A_ w); 3719 ev_periodic_stop (EV_A_ w);
3028 ev_periodic_start (EV_A_ w); 3720 ev_periodic_start (EV_A_ w);
3029} 3721}
3034#endif 3726#endif
3035 3727
3036#if EV_SIGNAL_ENABLE 3728#if EV_SIGNAL_ENABLE
3037 3729
3038void noinline 3730void noinline
3039ev_signal_start (EV_P_ ev_signal *w) 3731ev_signal_start (EV_P_ ev_signal *w) EV_THROW
3040{ 3732{
3041 if (expect_false (ev_is_active (w))) 3733 if (expect_false (ev_is_active (w)))
3042 return; 3734 return;
3043 3735
3044 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 3736 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
3046#if EV_MULTIPLICITY 3738#if EV_MULTIPLICITY
3047 assert (("libev: a signal must not be attached to two different loops", 3739 assert (("libev: a signal must not be attached to two different loops",
3048 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 3740 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
3049 3741
3050 signals [w->signum - 1].loop = EV_A; 3742 signals [w->signum - 1].loop = EV_A;
3743 ECB_MEMORY_FENCE_RELEASE;
3051#endif 3744#endif
3052 3745
3053 EV_FREQUENT_CHECK; 3746 EV_FREQUENT_CHECK;
3054 3747
3055#if EV_USE_SIGNALFD 3748#if EV_USE_SIGNALFD
3115 3808
3116 EV_FREQUENT_CHECK; 3809 EV_FREQUENT_CHECK;
3117} 3810}
3118 3811
3119void noinline 3812void noinline
3120ev_signal_stop (EV_P_ ev_signal *w) 3813ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
3121{ 3814{
3122 clear_pending (EV_A_ (W)w); 3815 clear_pending (EV_A_ (W)w);
3123 if (expect_false (!ev_is_active (w))) 3816 if (expect_false (!ev_is_active (w)))
3124 return; 3817 return;
3125 3818
3156#endif 3849#endif
3157 3850
3158#if EV_CHILD_ENABLE 3851#if EV_CHILD_ENABLE
3159 3852
3160void 3853void
3161ev_child_start (EV_P_ ev_child *w) 3854ev_child_start (EV_P_ ev_child *w) EV_THROW
3162{ 3855{
3163#if EV_MULTIPLICITY 3856#if EV_MULTIPLICITY
3164 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 3857 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
3165#endif 3858#endif
3166 if (expect_false (ev_is_active (w))) 3859 if (expect_false (ev_is_active (w)))
3173 3866
3174 EV_FREQUENT_CHECK; 3867 EV_FREQUENT_CHECK;
3175} 3868}
3176 3869
3177void 3870void
3178ev_child_stop (EV_P_ ev_child *w) 3871ev_child_stop (EV_P_ ev_child *w) EV_THROW
3179{ 3872{
3180 clear_pending (EV_A_ (W)w); 3873 clear_pending (EV_A_ (W)w);
3181 if (expect_false (!ev_is_active (w))) 3874 if (expect_false (!ev_is_active (w)))
3182 return; 3875 return;
3183 3876
3210# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 3903# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
3211 3904
3212static void noinline 3905static void noinline
3213infy_add (EV_P_ ev_stat *w) 3906infy_add (EV_P_ ev_stat *w)
3214{ 3907{
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); 3908 w->wd = inotify_add_watch (fs_fd, w->path,
3909 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
3910 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
3911 | IN_DONT_FOLLOW | IN_MASK_ADD);
3216 3912
3217 if (w->wd >= 0) 3913 if (w->wd >= 0)
3218 { 3914 {
3219 struct statfs sfs; 3915 struct statfs sfs;
3220 3916
3224 3920
3225 if (!fs_2625) 3921 if (!fs_2625)
3226 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 3922 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3227 else if (!statfs (w->path, &sfs) 3923 else if (!statfs (w->path, &sfs)
3228 && (sfs.f_type == 0x1373 /* devfs */ 3924 && (sfs.f_type == 0x1373 /* devfs */
3925 || sfs.f_type == 0x4006 /* fat */
3926 || sfs.f_type == 0x4d44 /* msdos */
3229 || sfs.f_type == 0xEF53 /* ext2/3 */ 3927 || sfs.f_type == 0xEF53 /* ext2/3 */
3928 || sfs.f_type == 0x72b6 /* jffs2 */
3929 || sfs.f_type == 0x858458f6 /* ramfs */
3930 || sfs.f_type == 0x5346544e /* ntfs */
3230 || sfs.f_type == 0x3153464a /* jfs */ 3931 || sfs.f_type == 0x3153464a /* jfs */
3932 || sfs.f_type == 0x9123683e /* btrfs */
3231 || sfs.f_type == 0x52654973 /* reiser3 */ 3933 || sfs.f_type == 0x52654973 /* reiser3 */
3232 || sfs.f_type == 0x01021994 /* tempfs */ 3934 || sfs.f_type == 0x01021994 /* tmpfs */
3233 || sfs.f_type == 0x58465342 /* xfs */)) 3935 || sfs.f_type == 0x58465342 /* xfs */))
3234 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ 3936 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3235 else 3937 else
3236 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ 3938 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
3237 } 3939 }
3350} 4052}
3351 4053
3352inline_size int 4054inline_size int
3353infy_newfd (void) 4055infy_newfd (void)
3354{ 4056{
3355#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 4057#if defined IN_CLOEXEC && defined IN_NONBLOCK
3356 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 4058 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3357 if (fd >= 0) 4059 if (fd >= 0)
3358 return fd; 4060 return fd;
3359#endif 4061#endif
3360 return inotify_init (); 4062 return inotify_init ();
3435#else 4137#else
3436# define EV_LSTAT(p,b) lstat (p, b) 4138# define EV_LSTAT(p,b) lstat (p, b)
3437#endif 4139#endif
3438 4140
3439void 4141void
3440ev_stat_stat (EV_P_ ev_stat *w) 4142ev_stat_stat (EV_P_ ev_stat *w) EV_THROW
3441{ 4143{
3442 if (lstat (w->path, &w->attr) < 0) 4144 if (lstat (w->path, &w->attr) < 0)
3443 w->attr.st_nlink = 0; 4145 w->attr.st_nlink = 0;
3444 else if (!w->attr.st_nlink) 4146 else if (!w->attr.st_nlink)
3445 w->attr.st_nlink = 1; 4147 w->attr.st_nlink = 1;
3484 ev_feed_event (EV_A_ w, EV_STAT); 4186 ev_feed_event (EV_A_ w, EV_STAT);
3485 } 4187 }
3486} 4188}
3487 4189
3488void 4190void
3489ev_stat_start (EV_P_ ev_stat *w) 4191ev_stat_start (EV_P_ ev_stat *w) EV_THROW
3490{ 4192{
3491 if (expect_false (ev_is_active (w))) 4193 if (expect_false (ev_is_active (w)))
3492 return; 4194 return;
3493 4195
3494 ev_stat_stat (EV_A_ w); 4196 ev_stat_stat (EV_A_ w);
3515 4217
3516 EV_FREQUENT_CHECK; 4218 EV_FREQUENT_CHECK;
3517} 4219}
3518 4220
3519void 4221void
3520ev_stat_stop (EV_P_ ev_stat *w) 4222ev_stat_stop (EV_P_ ev_stat *w) EV_THROW
3521{ 4223{
3522 clear_pending (EV_A_ (W)w); 4224 clear_pending (EV_A_ (W)w);
3523 if (expect_false (!ev_is_active (w))) 4225 if (expect_false (!ev_is_active (w)))
3524 return; 4226 return;
3525 4227
3541} 4243}
3542#endif 4244#endif
3543 4245
3544#if EV_IDLE_ENABLE 4246#if EV_IDLE_ENABLE
3545void 4247void
3546ev_idle_start (EV_P_ ev_idle *w) 4248ev_idle_start (EV_P_ ev_idle *w) EV_THROW
3547{ 4249{
3548 if (expect_false (ev_is_active (w))) 4250 if (expect_false (ev_is_active (w)))
3549 return; 4251 return;
3550 4252
3551 pri_adjust (EV_A_ (W)w); 4253 pri_adjust (EV_A_ (W)w);
3564 4266
3565 EV_FREQUENT_CHECK; 4267 EV_FREQUENT_CHECK;
3566} 4268}
3567 4269
3568void 4270void
3569ev_idle_stop (EV_P_ ev_idle *w) 4271ev_idle_stop (EV_P_ ev_idle *w) EV_THROW
3570{ 4272{
3571 clear_pending (EV_A_ (W)w); 4273 clear_pending (EV_A_ (W)w);
3572 if (expect_false (!ev_is_active (w))) 4274 if (expect_false (!ev_is_active (w)))
3573 return; 4275 return;
3574 4276
3588} 4290}
3589#endif 4291#endif
3590 4292
3591#if EV_PREPARE_ENABLE 4293#if EV_PREPARE_ENABLE
3592void 4294void
3593ev_prepare_start (EV_P_ ev_prepare *w) 4295ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW
3594{ 4296{
3595 if (expect_false (ev_is_active (w))) 4297 if (expect_false (ev_is_active (w)))
3596 return; 4298 return;
3597 4299
3598 EV_FREQUENT_CHECK; 4300 EV_FREQUENT_CHECK;
3603 4305
3604 EV_FREQUENT_CHECK; 4306 EV_FREQUENT_CHECK;
3605} 4307}
3606 4308
3607void 4309void
3608ev_prepare_stop (EV_P_ ev_prepare *w) 4310ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW
3609{ 4311{
3610 clear_pending (EV_A_ (W)w); 4312 clear_pending (EV_A_ (W)w);
3611 if (expect_false (!ev_is_active (w))) 4313 if (expect_false (!ev_is_active (w)))
3612 return; 4314 return;
3613 4315
3626} 4328}
3627#endif 4329#endif
3628 4330
3629#if EV_CHECK_ENABLE 4331#if EV_CHECK_ENABLE
3630void 4332void
3631ev_check_start (EV_P_ ev_check *w) 4333ev_check_start (EV_P_ ev_check *w) EV_THROW
3632{ 4334{
3633 if (expect_false (ev_is_active (w))) 4335 if (expect_false (ev_is_active (w)))
3634 return; 4336 return;
3635 4337
3636 EV_FREQUENT_CHECK; 4338 EV_FREQUENT_CHECK;
3641 4343
3642 EV_FREQUENT_CHECK; 4344 EV_FREQUENT_CHECK;
3643} 4345}
3644 4346
3645void 4347void
3646ev_check_stop (EV_P_ ev_check *w) 4348ev_check_stop (EV_P_ ev_check *w) EV_THROW
3647{ 4349{
3648 clear_pending (EV_A_ (W)w); 4350 clear_pending (EV_A_ (W)w);
3649 if (expect_false (!ev_is_active (w))) 4351 if (expect_false (!ev_is_active (w)))
3650 return; 4352 return;
3651 4353
3664} 4366}
3665#endif 4367#endif
3666 4368
3667#if EV_EMBED_ENABLE 4369#if EV_EMBED_ENABLE
3668void noinline 4370void noinline
3669ev_embed_sweep (EV_P_ ev_embed *w) 4371ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
3670{ 4372{
3671 ev_run (w->other, EVRUN_NOWAIT); 4373 ev_run (w->other, EVRUN_NOWAIT);
3672} 4374}
3673 4375
3674static void 4376static void
3722 ev_idle_stop (EV_A_ idle); 4424 ev_idle_stop (EV_A_ idle);
3723} 4425}
3724#endif 4426#endif
3725 4427
3726void 4428void
3727ev_embed_start (EV_P_ ev_embed *w) 4429ev_embed_start (EV_P_ ev_embed *w) EV_THROW
3728{ 4430{
3729 if (expect_false (ev_is_active (w))) 4431 if (expect_false (ev_is_active (w)))
3730 return; 4432 return;
3731 4433
3732 { 4434 {
3753 4455
3754 EV_FREQUENT_CHECK; 4456 EV_FREQUENT_CHECK;
3755} 4457}
3756 4458
3757void 4459void
3758ev_embed_stop (EV_P_ ev_embed *w) 4460ev_embed_stop (EV_P_ ev_embed *w) EV_THROW
3759{ 4461{
3760 clear_pending (EV_A_ (W)w); 4462 clear_pending (EV_A_ (W)w);
3761 if (expect_false (!ev_is_active (w))) 4463 if (expect_false (!ev_is_active (w)))
3762 return; 4464 return;
3763 4465
3773} 4475}
3774#endif 4476#endif
3775 4477
3776#if EV_FORK_ENABLE 4478#if EV_FORK_ENABLE
3777void 4479void
3778ev_fork_start (EV_P_ ev_fork *w) 4480ev_fork_start (EV_P_ ev_fork *w) EV_THROW
3779{ 4481{
3780 if (expect_false (ev_is_active (w))) 4482 if (expect_false (ev_is_active (w)))
3781 return; 4483 return;
3782 4484
3783 EV_FREQUENT_CHECK; 4485 EV_FREQUENT_CHECK;
3788 4490
3789 EV_FREQUENT_CHECK; 4491 EV_FREQUENT_CHECK;
3790} 4492}
3791 4493
3792void 4494void
3793ev_fork_stop (EV_P_ ev_fork *w) 4495ev_fork_stop (EV_P_ ev_fork *w) EV_THROW
3794{ 4496{
3795 clear_pending (EV_A_ (W)w); 4497 clear_pending (EV_A_ (W)w);
3796 if (expect_false (!ev_is_active (w))) 4498 if (expect_false (!ev_is_active (w)))
3797 return; 4499 return;
3798 4500
3811} 4513}
3812#endif 4514#endif
3813 4515
3814#if EV_CLEANUP_ENABLE 4516#if EV_CLEANUP_ENABLE
3815void 4517void
3816ev_cleanup_start (EV_P_ ev_cleanup *w) 4518ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW
3817{ 4519{
3818 if (expect_false (ev_is_active (w))) 4520 if (expect_false (ev_is_active (w)))
3819 return; 4521 return;
3820 4522
3821 EV_FREQUENT_CHECK; 4523 EV_FREQUENT_CHECK;
3828 ev_unref (EV_A); 4530 ev_unref (EV_A);
3829 EV_FREQUENT_CHECK; 4531 EV_FREQUENT_CHECK;
3830} 4532}
3831 4533
3832void 4534void
3833ev_cleanup_stop (EV_P_ ev_cleanup *w) 4535ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW
3834{ 4536{
3835 clear_pending (EV_A_ (W)w); 4537 clear_pending (EV_A_ (W)w);
3836 if (expect_false (!ev_is_active (w))) 4538 if (expect_false (!ev_is_active (w)))
3837 return; 4539 return;
3838 4540
3852} 4554}
3853#endif 4555#endif
3854 4556
3855#if EV_ASYNC_ENABLE 4557#if EV_ASYNC_ENABLE
3856void 4558void
3857ev_async_start (EV_P_ ev_async *w) 4559ev_async_start (EV_P_ ev_async *w) EV_THROW
3858{ 4560{
3859 if (expect_false (ev_is_active (w))) 4561 if (expect_false (ev_is_active (w)))
3860 return; 4562 return;
3861 4563
3862 w->sent = 0; 4564 w->sent = 0;
3871 4573
3872 EV_FREQUENT_CHECK; 4574 EV_FREQUENT_CHECK;
3873} 4575}
3874 4576
3875void 4577void
3876ev_async_stop (EV_P_ ev_async *w) 4578ev_async_stop (EV_P_ ev_async *w) EV_THROW
3877{ 4579{
3878 clear_pending (EV_A_ (W)w); 4580 clear_pending (EV_A_ (W)w);
3879 if (expect_false (!ev_is_active (w))) 4581 if (expect_false (!ev_is_active (w)))
3880 return; 4582 return;
3881 4583
3892 4594
3893 EV_FREQUENT_CHECK; 4595 EV_FREQUENT_CHECK;
3894} 4596}
3895 4597
3896void 4598void
3897ev_async_send (EV_P_ ev_async *w) 4599ev_async_send (EV_P_ ev_async *w) EV_THROW
3898{ 4600{
3899 w->sent = 1; 4601 w->sent = 1;
3900 evpipe_write (EV_A_ &async_pending); 4602 evpipe_write (EV_A_ &async_pending);
3901} 4603}
3902#endif 4604#endif
3939 4641
3940 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 4642 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3941} 4643}
3942 4644
3943void 4645void
3944ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 4646ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW
3945{ 4647{
3946 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4648 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3947 4649
3948 if (expect_false (!once)) 4650 if (expect_false (!once))
3949 { 4651 {
3971 4673
3972/*****************************************************************************/ 4674/*****************************************************************************/
3973 4675
3974#if EV_WALK_ENABLE 4676#if EV_WALK_ENABLE
3975void ecb_cold 4677void ecb_cold
3976ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 4678ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW
3977{ 4679{
3978 int i, j; 4680 int i, j;
3979 ev_watcher_list *wl, *wn; 4681 ev_watcher_list *wl, *wn;
3980 4682
3981 if (types & (EV_IO | EV_EMBED)) 4683 if (types & (EV_IO | EV_EMBED))
4024 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 4726 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
4025#endif 4727#endif
4026 4728
4027#if EV_IDLE_ENABLE 4729#if EV_IDLE_ENABLE
4028 if (types & EV_IDLE) 4730 if (types & EV_IDLE)
4029 for (j = NUMPRI; i--; ) 4731 for (j = NUMPRI; j--; )
4030 for (i = idlecnt [j]; i--; ) 4732 for (i = idlecnt [j]; i--; )
4031 cb (EV_A_ EV_IDLE, idles [j][i]); 4733 cb (EV_A_ EV_IDLE, idles [j][i]);
4032#endif 4734#endif
4033 4735
4034#if EV_FORK_ENABLE 4736#if EV_FORK_ENABLE
4087 4789
4088#if EV_MULTIPLICITY 4790#if EV_MULTIPLICITY
4089 #include "ev_wrap.h" 4791 #include "ev_wrap.h"
4090#endif 4792#endif
4091 4793
4092EV_CPP(})
4093

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