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Comparing libev/ev.c (file contents):
Revision 1.374 by root, Sat Feb 26 15:21:01 2011 UTC vs.
Revision 1.475 by sf-exg, Wed Apr 1 06:57:41 2015 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) 2007,2008,2009,2010,2011,2012,2013 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 *
… …
43# include EV_CONFIG_H 43# include EV_CONFIG_H
44# else 44# else
45# include "config.h" 45# include "config.h"
46# endif 46# endif
47 47
48#if HAVE_FLOOR 48# if HAVE_FLOOR
49# ifndef EV_USE_FLOOR 49# ifndef EV_USE_FLOOR
50# define EV_USE_FLOOR 1 50# define EV_USE_FLOOR 1
51# endif
51# endif 52# endif
52#endif
53 53
54# if HAVE_CLOCK_SYSCALL 54# if HAVE_CLOCK_SYSCALL
55# ifndef EV_USE_CLOCK_SYSCALL 55# ifndef EV_USE_CLOCK_SYSCALL
56# define EV_USE_CLOCK_SYSCALL 1 56# define EV_USE_CLOCK_SYSCALL 1
57# ifndef EV_USE_REALTIME 57# ifndef EV_USE_REALTIME
… …
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# define EV_NSIG (8 * sizeof (sigset_t) + 1)
237/* to make it compile regardless, just remove the above line, */
238/* but consider reporting it, too! :) */
239# define EV_NSIG 65
240#endif 247#endif
241 248
242#ifndef EV_USE_FLOOR 249#ifndef EV_USE_FLOOR
243# define EV_USE_FLOOR 0 250# define EV_USE_FLOOR 0
244#endif 251#endif
245 252
246#ifndef EV_USE_CLOCK_SYSCALL 253#ifndef EV_USE_CLOCK_SYSCALL
247# if __linux && __GLIBC__ >= 2 254# if __linux && __GLIBC__ == 2 && __GLIBC_MINOR__ < 17
248# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS 255# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
249# else 256# else
250# define EV_USE_CLOCK_SYSCALL 0 257# define EV_USE_CLOCK_SYSCALL 0
251# endif 258# endif
252#endif 259#endif
253 260
261#if !(_POSIX_TIMERS > 0)
262# ifndef EV_USE_MONOTONIC
263# define EV_USE_MONOTONIC 0
264# endif
265# ifndef EV_USE_REALTIME
266# define EV_USE_REALTIME 0
267# endif
268#endif
269
254#ifndef EV_USE_MONOTONIC 270#ifndef EV_USE_MONOTONIC
255# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 271# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
256# define EV_USE_MONOTONIC EV_FEATURE_OS 272# define EV_USE_MONOTONIC EV_FEATURE_OS
257# else 273# else
258# define EV_USE_MONOTONIC 0 274# define EV_USE_MONOTONIC 0
259# endif 275# endif
260#endif 276#endif
… …
347 363
348#ifndef EV_HEAP_CACHE_AT 364#ifndef EV_HEAP_CACHE_AT
349# define EV_HEAP_CACHE_AT EV_FEATURE_DATA 365# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
350#endif 366#endif
351 367
368#ifdef ANDROID
369/* supposedly, android doesn't typedef fd_mask */
370# undef EV_USE_SELECT
371# define EV_USE_SELECT 0
372/* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */
373# undef EV_USE_CLOCK_SYSCALL
374# define EV_USE_CLOCK_SYSCALL 0
375#endif
376
377/* aix's poll.h seems to cause lots of trouble */
378#ifdef _AIX
379/* AIX has a completely broken poll.h header */
380# undef EV_USE_POLL
381# define EV_USE_POLL 0
382#endif
383
352/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ 384/* 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. */ 385/* which makes programs even slower. might work on other unices, too. */
354#if EV_USE_CLOCK_SYSCALL 386#if EV_USE_CLOCK_SYSCALL
355# include <syscall.h> 387# include <sys/syscall.h>
356# ifdef SYS_clock_gettime 388# ifdef SYS_clock_gettime
357# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 389# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
358# undef EV_USE_MONOTONIC 390# undef EV_USE_MONOTONIC
359# define EV_USE_MONOTONIC 1 391# define EV_USE_MONOTONIC 1
360# else 392# else
… …
363# endif 395# endif
364#endif 396#endif
365 397
366/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 398/* this block fixes any misconfiguration where we know we run into trouble otherwise */
367 399
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 400#ifndef CLOCK_MONOTONIC
375# undef EV_USE_MONOTONIC 401# undef EV_USE_MONOTONIC
376# define EV_USE_MONOTONIC 0 402# define EV_USE_MONOTONIC 0
377#endif 403#endif
378 404
… …
386# define EV_USE_INOTIFY 0 412# define EV_USE_INOTIFY 0
387#endif 413#endif
388 414
389#if !EV_USE_NANOSLEEP 415#if !EV_USE_NANOSLEEP
390/* hp-ux has it in sys/time.h, which we unconditionally include above */ 416/* hp-ux has it in sys/time.h, which we unconditionally include above */
391# if !defined(_WIN32) && !defined(__hpux) 417# if !defined _WIN32 && !defined __hpux
392# include <sys/select.h> 418# include <sys/select.h>
393# endif 419# endif
394#endif 420#endif
395 421
396#if EV_USE_INOTIFY 422#if EV_USE_INOTIFY
… …
399/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 425/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
400# ifndef IN_DONT_FOLLOW 426# ifndef IN_DONT_FOLLOW
401# undef EV_USE_INOTIFY 427# undef EV_USE_INOTIFY
402# define EV_USE_INOTIFY 0 428# define EV_USE_INOTIFY 0
403# endif 429# endif
404#endif
405
406#if EV_SELECT_IS_WINSOCKET
407# include <winsock.h>
408#endif 430#endif
409 431
410#if EV_USE_EVENTFD 432#if EV_USE_EVENTFD
411/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 433/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
412# include <stdint.h> 434# include <stdint.h>
… …
464#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 486#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
465 487
466#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0) 488#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) 489#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
468 490
491/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
492/* ECB.H BEGIN */
493/*
494 * libecb - http://software.schmorp.de/pkg/libecb
495 *
496 * Copyright (©) 2009-2015 Marc Alexander Lehmann <libecb@schmorp.de>
497 * Copyright (©) 2011 Emanuele Giaquinta
498 * All rights reserved.
499 *
500 * Redistribution and use in source and binary forms, with or without modifica-
501 * tion, are permitted provided that the following conditions are met:
502 *
503 * 1. Redistributions of source code must retain the above copyright notice,
504 * this list of conditions and the following disclaimer.
505 *
506 * 2. Redistributions in binary form must reproduce the above copyright
507 * notice, this list of conditions and the following disclaimer in the
508 * documentation and/or other materials provided with the distribution.
509 *
510 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
511 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
512 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
513 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
514 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
515 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
516 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
517 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
518 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
519 * OF THE POSSIBILITY OF SUCH DAMAGE.
520 *
521 * Alternatively, the contents of this file may be used under the terms of
522 * the GNU General Public License ("GPL") version 2 or any later version,
523 * in which case the provisions of the GPL are applicable instead of
524 * the above. If you wish to allow the use of your version of this file
525 * only under the terms of the GPL and not to allow others to use your
526 * version of this file under the BSD license, indicate your decision
527 * by deleting the provisions above and replace them with the notice
528 * and other provisions required by the GPL. If you do not delete the
529 * provisions above, a recipient may use your version of this file under
530 * either the BSD or the GPL.
531 */
532
533#ifndef ECB_H
534#define ECB_H
535
536/* 16 bits major, 16 bits minor */
537#define ECB_VERSION 0x00010004
538
539#ifdef _WIN32
540 typedef signed char int8_t;
541 typedef unsigned char uint8_t;
542 typedef signed short int16_t;
543 typedef unsigned short uint16_t;
544 typedef signed int int32_t;
545 typedef unsigned int uint32_t;
469#if __GNUC__ >= 4 546 #if __GNUC__
470# define expect(expr,value) __builtin_expect ((expr),(value)) 547 typedef signed long long int64_t;
471# define noinline __attribute__ ((noinline)) 548 typedef unsigned long long uint64_t;
549 #else /* _MSC_VER || __BORLANDC__ */
550 typedef signed __int64 int64_t;
551 typedef unsigned __int64 uint64_t;
552 #endif
553 #ifdef _WIN64
554 #define ECB_PTRSIZE 8
555 typedef uint64_t uintptr_t;
556 typedef int64_t intptr_t;
557 #else
558 #define ECB_PTRSIZE 4
559 typedef uint32_t uintptr_t;
560 typedef int32_t intptr_t;
561 #endif
472#else 562#else
473# define expect(expr,value) (expr) 563 #include <inttypes.h>
474# define noinline 564 #if UINTMAX_MAX > 0xffffffffU
475# if __STDC_VERSION__ < 199901L && __GNUC__ < 2 565 #define ECB_PTRSIZE 8
476# define inline 566 #else
567 #define ECB_PTRSIZE 4
568 #endif
477# endif 569#endif
570
571#define ECB_GCC_AMD64 (__amd64 || __amd64__ || __x86_64 || __x86_64__)
572#define ECB_MSVC_AMD64 (_M_AMD64 || _M_X64)
573
574/* work around x32 idiocy by defining proper macros */
575#if ECB_GCC_AMD64 || ECB_MSVC_AMD64
576 #if _ILP32
577 #define ECB_AMD64_X32 1
578 #else
579 #define ECB_AMD64 1
478#endif 580 #endif
581#endif
479 582
583/* many compilers define _GNUC_ to some versions but then only implement
584 * what their idiot authors think are the "more important" extensions,
585 * causing enormous grief in return for some better fake benchmark numbers.
586 * or so.
587 * we try to detect these and simply assume they are not gcc - if they have
588 * an issue with that they should have done it right in the first place.
589 */
590#if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
591 #define ECB_GCC_VERSION(major,minor) 0
592#else
593 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
594#endif
595
596#define ECB_CLANG_VERSION(major,minor) (__clang_major__ > (major) || (__clang_major__ == (major) && __clang_minor__ >= (minor)))
597
598#if __clang__ && defined __has_builtin
599 #define ECB_CLANG_BUILTIN(x) __has_builtin (x)
600#else
601 #define ECB_CLANG_BUILTIN(x) 0
602#endif
603
604#if __clang__ && defined __has_extension
605 #define ECB_CLANG_EXTENSION(x) __has_extension (x)
606#else
607 #define ECB_CLANG_EXTENSION(x) 0
608#endif
609
610#define ECB_CPP (__cplusplus+0)
611#define ECB_CPP11 (__cplusplus >= 201103L)
612
613#if ECB_CPP
614 #define ECB_C 0
615 #define ECB_STDC_VERSION 0
616#else
617 #define ECB_C 1
618 #define ECB_STDC_VERSION __STDC_VERSION__
619#endif
620
621#define ECB_C99 (ECB_STDC_VERSION >= 199901L)
622#define ECB_C11 (ECB_STDC_VERSION >= 201112L)
623
624#if ECB_CPP
625 #define ECB_EXTERN_C extern "C"
626 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
627 #define ECB_EXTERN_C_END }
628#else
629 #define ECB_EXTERN_C extern
630 #define ECB_EXTERN_C_BEG
631 #define ECB_EXTERN_C_END
632#endif
633
634/*****************************************************************************/
635
636/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
637/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
638
639#if ECB_NO_THREADS
640 #define ECB_NO_SMP 1
641#endif
642
643#if ECB_NO_SMP
644 #define ECB_MEMORY_FENCE do { } while (0)
645#endif
646
647#ifndef ECB_MEMORY_FENCE
648 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
649 #if __i386 || __i386__
650 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
651 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
652 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
653 #elif ECB_GCC_AMD64
654 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
655 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
656 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
657 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
658 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
659 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
660 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__
661 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
662 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
663 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__
664 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
665 #elif __aarch64__
666 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
667 #elif (__sparc || __sparc__) && !__sparcv8
668 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
669 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
670 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
671 #elif defined __s390__ || defined __s390x__
672 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
673 #elif defined __mips__
674 /* GNU/Linux emulates sync on mips1 architectures, so we force its use */
675 /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
676 #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
677 #elif defined __alpha__
678 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
679 #elif defined __hppa__
680 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
681 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
682 #elif defined __ia64__
683 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
684 #elif defined __m68k__
685 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
686 #elif defined __m88k__
687 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
688 #elif defined __sh__
689 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
690 #endif
691 #endif
692#endif
693
694#ifndef ECB_MEMORY_FENCE
695 #if ECB_GCC_VERSION(4,7)
696 /* see comment below (stdatomic.h) about the C11 memory model. */
697 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
698 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
699 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
700
701 #elif ECB_CLANG_EXTENSION(c_atomic)
702 /* see comment below (stdatomic.h) about the C11 memory model. */
703 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
704 #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
705 #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
706
707 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
708 #define ECB_MEMORY_FENCE __sync_synchronize ()
709 #elif _MSC_VER >= 1500 /* VC++ 2008 */
710 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
711 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
712 #define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier()
713 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */
714 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier()
715 #elif _MSC_VER >= 1400 /* VC++ 2005 */
716 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
717 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
718 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
719 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
720 #elif defined _WIN32
721 #include <WinNT.h>
722 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
723 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
724 #include <mbarrier.h>
725 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
726 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
727 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
728 #elif __xlC__
729 #define ECB_MEMORY_FENCE __sync ()
730 #endif
731#endif
732
733#ifndef ECB_MEMORY_FENCE
734 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
735 /* we assume that these memory fences work on all variables/all memory accesses, */
736 /* not just C11 atomics and atomic accesses */
737 #include <stdatomic.h>
738 /* Unfortunately, neither gcc 4.7 nor clang 3.1 generate any instructions for */
739 /* any fence other than seq_cst, which isn't very efficient for us. */
740 /* Why that is, we don't know - either the C11 memory model is quite useless */
741 /* for most usages, or gcc and clang have a bug */
742 /* I *currently* lean towards the latter, and inefficiently implement */
743 /* all three of ecb's fences as a seq_cst fence */
744 /* Update, gcc-4.8 generates mfence for all c++ fences, but nothing */
745 /* for all __atomic_thread_fence's except seq_cst */
746 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
747 #endif
748#endif
749
750#ifndef ECB_MEMORY_FENCE
751 #if !ECB_AVOID_PTHREADS
752 /*
753 * if you get undefined symbol references to pthread_mutex_lock,
754 * or failure to find pthread.h, then you should implement
755 * the ECB_MEMORY_FENCE operations for your cpu/compiler
756 * OR provide pthread.h and link against the posix thread library
757 * of your system.
758 */
759 #include <pthread.h>
760 #define ECB_NEEDS_PTHREADS 1
761 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
762
763 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
764 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
765 #endif
766#endif
767
768#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
769 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
770#endif
771
772#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
773 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
774#endif
775
776/*****************************************************************************/
777
778#if ECB_CPP
779 #define ecb_inline static inline
780#elif ECB_GCC_VERSION(2,5)
781 #define ecb_inline static __inline__
782#elif ECB_C99
783 #define ecb_inline static inline
784#else
785 #define ecb_inline static
786#endif
787
788#if ECB_GCC_VERSION(3,3)
789 #define ecb_restrict __restrict__
790#elif ECB_C99
791 #define ecb_restrict restrict
792#else
793 #define ecb_restrict
794#endif
795
796typedef int ecb_bool;
797
798#define ECB_CONCAT_(a, b) a ## b
799#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
800#define ECB_STRINGIFY_(a) # a
801#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
802#define ECB_STRINGIFY_EXPR(expr) ((expr), ECB_STRINGIFY_ (expr))
803
804#define ecb_function_ ecb_inline
805
806#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
807 #define ecb_attribute(attrlist) __attribute__ (attrlist)
808#else
809 #define ecb_attribute(attrlist)
810#endif
811
812#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_constant_p)
813 #define ecb_is_constant(expr) __builtin_constant_p (expr)
814#else
815 /* possible C11 impl for integral types
816 typedef struct ecb_is_constant_struct ecb_is_constant_struct;
817 #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */
818
819 #define ecb_is_constant(expr) 0
820#endif
821
822#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_expect)
823 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
824#else
825 #define ecb_expect(expr,value) (expr)
826#endif
827
828#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_prefetch)
829 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
830#else
831 #define ecb_prefetch(addr,rw,locality)
832#endif
833
834/* no emulation for ecb_decltype */
835#if ECB_CPP11
836 // older implementations might have problems with decltype(x)::type, work around it
837 template<class T> struct ecb_decltype_t { typedef T type; };
838 #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
839#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
840 #define ecb_decltype(x) __typeof__ (x)
841#endif
842
843#if _MSC_VER >= 1300
844 #define ecb_deprecated __declspec (deprecated)
845#else
846 #define ecb_deprecated ecb_attribute ((__deprecated__))
847#endif
848
849#if __MSC_VER >= 1500
850 #define ecb_deprecated_message(msg) __declspec (deprecated (msg))
851#elif ECB_GCC_VERSION(4,5)
852 #define ecb_deprecated_message(msg) ecb_attribute ((__deprecated__ (msg))
853#else
854 #define ecb_deprecated_message(msg) ecb_deprecated
855#endif
856
857#if _MSC_VER >= 1400
858 #define ecb_noinline __declspec (noinline)
859#else
860 #define ecb_noinline ecb_attribute ((__noinline__))
861#endif
862
863#define ecb_unused ecb_attribute ((__unused__))
864#define ecb_const ecb_attribute ((__const__))
865#define ecb_pure ecb_attribute ((__pure__))
866
867#if ECB_C11 || __IBMC_NORETURN
868 /* http://pic.dhe.ibm.com/infocenter/compbg/v121v141/topic/com.ibm.xlcpp121.bg.doc/language_ref/noreturn.html */
869 #define ecb_noreturn _Noreturn
870#elif ECB_CPP11
871 #define ecb_noreturn [[noreturn]]
872#elif _MSC_VER >= 1200
873 /* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx */
874 #define ecb_noreturn __declspec (noreturn)
875#else
876 #define ecb_noreturn ecb_attribute ((__noreturn__))
877#endif
878
879#if ECB_GCC_VERSION(4,3)
880 #define ecb_artificial ecb_attribute ((__artificial__))
881 #define ecb_hot ecb_attribute ((__hot__))
882 #define ecb_cold ecb_attribute ((__cold__))
883#else
884 #define ecb_artificial
885 #define ecb_hot
886 #define ecb_cold
887#endif
888
889/* put around conditional expressions if you are very sure that the */
890/* expression is mostly true or mostly false. note that these return */
891/* booleans, not the expression. */
480#define expect_false(expr) expect ((expr) != 0, 0) 892#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
481#define expect_true(expr) expect ((expr) != 0, 1) 893#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
894/* for compatibility to the rest of the world */
895#define ecb_likely(expr) ecb_expect_true (expr)
896#define ecb_unlikely(expr) ecb_expect_false (expr)
897
898/* count trailing zero bits and count # of one bits */
899#if ECB_GCC_VERSION(3,4) \
900 || (ECB_CLANG_BUILTIN(__builtin_clz) && ECB_CLANG_BUILTIN(__builtin_clzll) \
901 && ECB_CLANG_BUILTIN(__builtin_ctz) && ECB_CLANG_BUILTIN(__builtin_ctzll) \
902 && ECB_CLANG_BUILTIN(__builtin_popcount))
903 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
904 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
905 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
906 #define ecb_ctz32(x) __builtin_ctz (x)
907 #define ecb_ctz64(x) __builtin_ctzll (x)
908 #define ecb_popcount32(x) __builtin_popcount (x)
909 /* no popcountll */
910#else
911 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
912 ecb_function_ ecb_const int
913 ecb_ctz32 (uint32_t x)
914 {
915 int r = 0;
916
917 x &= ~x + 1; /* this isolates the lowest bit */
918
919#if ECB_branchless_on_i386
920 r += !!(x & 0xaaaaaaaa) << 0;
921 r += !!(x & 0xcccccccc) << 1;
922 r += !!(x & 0xf0f0f0f0) << 2;
923 r += !!(x & 0xff00ff00) << 3;
924 r += !!(x & 0xffff0000) << 4;
925#else
926 if (x & 0xaaaaaaaa) r += 1;
927 if (x & 0xcccccccc) r += 2;
928 if (x & 0xf0f0f0f0) r += 4;
929 if (x & 0xff00ff00) r += 8;
930 if (x & 0xffff0000) r += 16;
931#endif
932
933 return r;
934 }
935
936 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
937 ecb_function_ ecb_const int
938 ecb_ctz64 (uint64_t x)
939 {
940 int shift = x & 0xffffffffU ? 0 : 32;
941 return ecb_ctz32 (x >> shift) + shift;
942 }
943
944 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
945 ecb_function_ ecb_const int
946 ecb_popcount32 (uint32_t x)
947 {
948 x -= (x >> 1) & 0x55555555;
949 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
950 x = ((x >> 4) + x) & 0x0f0f0f0f;
951 x *= 0x01010101;
952
953 return x >> 24;
954 }
955
956 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
957 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
958 {
959 int r = 0;
960
961 if (x >> 16) { x >>= 16; r += 16; }
962 if (x >> 8) { x >>= 8; r += 8; }
963 if (x >> 4) { x >>= 4; r += 4; }
964 if (x >> 2) { x >>= 2; r += 2; }
965 if (x >> 1) { r += 1; }
966
967 return r;
968 }
969
970 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
971 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
972 {
973 int r = 0;
974
975 if (x >> 32) { x >>= 32; r += 32; }
976
977 return r + ecb_ld32 (x);
978 }
979#endif
980
981ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x);
982ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
983ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x);
984ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
985
986ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
987ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
988{
989 return ( (x * 0x0802U & 0x22110U)
990 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
991}
992
993ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
994ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
995{
996 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
997 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
998 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
999 x = ( x >> 8 ) | ( x << 8);
1000
1001 return x;
1002}
1003
1004ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
1005ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
1006{
1007 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
1008 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
1009 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
1010 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
1011 x = ( x >> 16 ) | ( x << 16);
1012
1013 return x;
1014}
1015
1016/* popcount64 is only available on 64 bit cpus as gcc builtin */
1017/* so for this version we are lazy */
1018ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
1019ecb_function_ ecb_const int
1020ecb_popcount64 (uint64_t x)
1021{
1022 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
1023}
1024
1025ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count);
1026ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count);
1027ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count);
1028ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count);
1029ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count);
1030ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count);
1031ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count);
1032ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count);
1033
1034ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
1035ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
1036ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
1037ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
1038ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
1039ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
1040ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
1041ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
1042
1043#if ECB_GCC_VERSION(4,3) || (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64))
1044 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
1045 #define ecb_bswap32(x) __builtin_bswap32 (x)
1046 #define ecb_bswap64(x) __builtin_bswap64 (x)
1047#else
1048 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
1049 ecb_function_ ecb_const uint16_t
1050 ecb_bswap16 (uint16_t x)
1051 {
1052 return ecb_rotl16 (x, 8);
1053 }
1054
1055 ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
1056 ecb_function_ ecb_const uint32_t
1057 ecb_bswap32 (uint32_t x)
1058 {
1059 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
1060 }
1061
1062 ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
1063 ecb_function_ ecb_const uint64_t
1064 ecb_bswap64 (uint64_t x)
1065 {
1066 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
1067 }
1068#endif
1069
1070#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
1071 #define ecb_unreachable() __builtin_unreachable ()
1072#else
1073 /* this seems to work fine, but gcc always emits a warning for it :/ */
1074 ecb_inline ecb_noreturn void ecb_unreachable (void);
1075 ecb_inline ecb_noreturn void ecb_unreachable (void) { }
1076#endif
1077
1078/* try to tell the compiler that some condition is definitely true */
1079#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
1080
1081ecb_inline ecb_const unsigned char ecb_byteorder_helper (void);
1082ecb_inline ecb_const unsigned char
1083ecb_byteorder_helper (void)
1084{
1085 /* the union code still generates code under pressure in gcc, */
1086 /* but less than using pointers, and always seems to */
1087 /* successfully return a constant. */
1088 /* the reason why we have this horrible preprocessor mess */
1089 /* is to avoid it in all cases, at least on common architectures */
1090 /* or when using a recent enough gcc version (>= 4.6) */
1091#if ((__i386 || __i386__) && !__VOS__) || _M_IX86 || ECB_GCC_AMD64 || ECB_MSVC_AMD64
1092 return 0x44;
1093#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
1094 return 0x44;
1095#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
1096 return 0x11;
1097#else
1098 union
1099 {
1100 uint32_t i;
1101 uint8_t c;
1102 } u = { 0x11223344 };
1103 return u.c;
1104#endif
1105}
1106
1107ecb_inline ecb_const ecb_bool ecb_big_endian (void);
1108ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
1109ecb_inline ecb_const ecb_bool ecb_little_endian (void);
1110ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }
1111
1112#if ECB_GCC_VERSION(3,0) || ECB_C99
1113 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
1114#else
1115 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
1116#endif
1117
1118#if ECB_CPP
1119 template<typename T>
1120 static inline T ecb_div_rd (T val, T div)
1121 {
1122 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
1123 }
1124 template<typename T>
1125 static inline T ecb_div_ru (T val, T div)
1126 {
1127 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
1128 }
1129#else
1130 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
1131 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
1132#endif
1133
1134#if ecb_cplusplus_does_not_suck
1135 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
1136 template<typename T, int N>
1137 static inline int ecb_array_length (const T (&arr)[N])
1138 {
1139 return N;
1140 }
1141#else
1142 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
1143#endif
1144
1145/*******************************************************************************/
1146/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1147
1148/* basically, everything uses "ieee pure-endian" floating point numbers */
1149/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1150#if 0 \
1151 || __i386 || __i386__ \
1152 || ECB_GCC_AMD64 \
1153 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1154 || defined __s390__ || defined __s390x__ \
1155 || defined __mips__ \
1156 || defined __alpha__ \
1157 || defined __hppa__ \
1158 || defined __ia64__ \
1159 || defined __m68k__ \
1160 || defined __m88k__ \
1161 || defined __sh__ \
1162 || defined _M_IX86 || defined ECB_MSVC_AMD64 || defined _M_IA64 \
1163 || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \
1164 || defined __aarch64__
1165 #define ECB_STDFP 1
1166 #include <string.h> /* for memcpy */
1167#else
1168 #define ECB_STDFP 0
1169#endif
1170
1171#ifndef ECB_NO_LIBM
1172
1173 #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */
1174
1175 /* only the oldest of old doesn't have this one. solaris. */
1176 #ifdef INFINITY
1177 #define ECB_INFINITY INFINITY
1178 #else
1179 #define ECB_INFINITY HUGE_VAL
1180 #endif
1181
1182 #ifdef NAN
1183 #define ECB_NAN NAN
1184 #else
1185 #define ECB_NAN ECB_INFINITY
1186 #endif
1187
1188 #if ECB_C99 || _XOPEN_VERSION >= 600 || _POSIX_VERSION >= 200112L
1189 #define ecb_ldexpf(x,e) ldexpf ((x), (e))
1190 #else
1191 #define ecb_ldexpf(x,e) (float) ldexp ((float) (x), (e))
1192 #endif
1193
1194 /* converts an ieee half/binary16 to a float */
1195 ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x);
1196 ecb_function_ ecb_const float
1197 ecb_binary16_to_float (uint16_t x)
1198 {
1199 int e = (x >> 10) & 0x1f;
1200 int m = x & 0x3ff;
1201 float r;
1202
1203 if (!e ) r = ecb_ldexpf (m , -24);
1204 else if (e != 31) r = ecb_ldexpf (m + 0x400, e - 25);
1205 else if (m ) r = ECB_NAN;
1206 else r = ECB_INFINITY;
1207
1208 return x & 0x8000 ? -r : r;
1209 }
1210
1211 /* convert a float to ieee single/binary32 */
1212 ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x);
1213 ecb_function_ ecb_const uint32_t
1214 ecb_float_to_binary32 (float x)
1215 {
1216 uint32_t r;
1217
1218 #if ECB_STDFP
1219 memcpy (&r, &x, 4);
1220 #else
1221 /* slow emulation, works for anything but -0 */
1222 uint32_t m;
1223 int e;
1224
1225 if (x == 0e0f ) return 0x00000000U;
1226 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1227 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1228 if (x != x ) return 0x7fbfffffU;
1229
1230 m = frexpf (x, &e) * 0x1000000U;
1231
1232 r = m & 0x80000000U;
1233
1234 if (r)
1235 m = -m;
1236
1237 if (e <= -126)
1238 {
1239 m &= 0xffffffU;
1240 m >>= (-125 - e);
1241 e = -126;
1242 }
1243
1244 r |= (e + 126) << 23;
1245 r |= m & 0x7fffffU;
1246 #endif
1247
1248 return r;
1249 }
1250
1251 /* converts an ieee single/binary32 to a float */
1252 ecb_function_ ecb_const float ecb_binary32_to_float (uint32_t x);
1253 ecb_function_ ecb_const float
1254 ecb_binary32_to_float (uint32_t x)
1255 {
1256 float r;
1257
1258 #if ECB_STDFP
1259 memcpy (&r, &x, 4);
1260 #else
1261 /* emulation, only works for normals and subnormals and +0 */
1262 int neg = x >> 31;
1263 int e = (x >> 23) & 0xffU;
1264
1265 x &= 0x7fffffU;
1266
1267 if (e)
1268 x |= 0x800000U;
1269 else
1270 e = 1;
1271
1272 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1273 r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126);
1274
1275 r = neg ? -r : r;
1276 #endif
1277
1278 return r;
1279 }
1280
1281 /* convert a double to ieee double/binary64 */
1282 ecb_function_ ecb_const uint64_t ecb_double_to_binary64 (double x);
1283 ecb_function_ ecb_const uint64_t
1284 ecb_double_to_binary64 (double x)
1285 {
1286 uint64_t r;
1287
1288 #if ECB_STDFP
1289 memcpy (&r, &x, 8);
1290 #else
1291 /* slow emulation, works for anything but -0 */
1292 uint64_t m;
1293 int e;
1294
1295 if (x == 0e0 ) return 0x0000000000000000U;
1296 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1297 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1298 if (x != x ) return 0X7ff7ffffffffffffU;
1299
1300 m = frexp (x, &e) * 0x20000000000000U;
1301
1302 r = m & 0x8000000000000000;;
1303
1304 if (r)
1305 m = -m;
1306
1307 if (e <= -1022)
1308 {
1309 m &= 0x1fffffffffffffU;
1310 m >>= (-1021 - e);
1311 e = -1022;
1312 }
1313
1314 r |= ((uint64_t)(e + 1022)) << 52;
1315 r |= m & 0xfffffffffffffU;
1316 #endif
1317
1318 return r;
1319 }
1320
1321 /* converts an ieee double/binary64 to a double */
1322 ecb_function_ ecb_const double ecb_binary64_to_double (uint64_t x);
1323 ecb_function_ ecb_const double
1324 ecb_binary64_to_double (uint64_t x)
1325 {
1326 double r;
1327
1328 #if ECB_STDFP
1329 memcpy (&r, &x, 8);
1330 #else
1331 /* emulation, only works for normals and subnormals and +0 */
1332 int neg = x >> 63;
1333 int e = (x >> 52) & 0x7ffU;
1334
1335 x &= 0xfffffffffffffU;
1336
1337 if (e)
1338 x |= 0x10000000000000U;
1339 else
1340 e = 1;
1341
1342 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1343 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1344
1345 r = neg ? -r : r;
1346 #endif
1347
1348 return r;
1349 }
1350
1351#endif
1352
1353#endif
1354
1355/* ECB.H END */
1356
1357#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
1358/* if your architecture doesn't need memory fences, e.g. because it is
1359 * single-cpu/core, or if you use libev in a project that doesn't use libev
1360 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
1361 * libev, in which cases the memory fences become nops.
1362 * alternatively, you can remove this #error and link against libpthread,
1363 * which will then provide the memory fences.
1364 */
1365# error "memory fences not defined for your architecture, please report"
1366#endif
1367
1368#ifndef ECB_MEMORY_FENCE
1369# define ECB_MEMORY_FENCE do { } while (0)
1370# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1371# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1372#endif
1373
1374#define expect_false(cond) ecb_expect_false (cond)
1375#define expect_true(cond) ecb_expect_true (cond)
1376#define noinline ecb_noinline
1377
482#define inline_size static inline 1378#define inline_size ecb_inline
483 1379
484#if EV_FEATURE_CODE 1380#if EV_FEATURE_CODE
485# define inline_speed static inline 1381# define inline_speed ecb_inline
486#else 1382#else
487# define inline_speed static noinline 1383# define inline_speed static noinline
488#endif 1384#endif
489 1385
490#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1386#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
… …
581 1477
582#ifdef __linux 1478#ifdef __linux
583# include <sys/utsname.h> 1479# include <sys/utsname.h>
584#endif 1480#endif
585 1481
586static unsigned int noinline 1482static unsigned int noinline ecb_cold
587ev_linux_version (void) 1483ev_linux_version (void)
588{ 1484{
589#ifdef __linux 1485#ifdef __linux
590 unsigned int v = 0; 1486 unsigned int v = 0;
591 struct utsname buf; 1487 struct utsname buf;
… …
620} 1516}
621 1517
622/*****************************************************************************/ 1518/*****************************************************************************/
623 1519
624#if EV_AVOID_STDIO 1520#if EV_AVOID_STDIO
625static void noinline 1521static void noinline ecb_cold
626ev_printerr (const char *msg) 1522ev_printerr (const char *msg)
627{ 1523{
628 write (STDERR_FILENO, msg, strlen (msg)); 1524 write (STDERR_FILENO, msg, strlen (msg));
629} 1525}
630#endif 1526#endif
631 1527
632static void (*syserr_cb)(const char *msg); 1528static void (*syserr_cb)(const char *msg) EV_THROW;
633 1529
634void 1530void ecb_cold
635ev_set_syserr_cb (void (*cb)(const char *msg)) 1531ev_set_syserr_cb (void (*cb)(const char *msg) EV_THROW) EV_THROW
636{ 1532{
637 syserr_cb = cb; 1533 syserr_cb = cb;
638} 1534}
639 1535
640static void noinline 1536static void noinline ecb_cold
641ev_syserr (const char *msg) 1537ev_syserr (const char *msg)
642{ 1538{
643 if (!msg) 1539 if (!msg)
644 msg = "(libev) system error"; 1540 msg = "(libev) system error";
645 1541
… …
658 abort (); 1554 abort ();
659 } 1555 }
660} 1556}
661 1557
662static void * 1558static void *
663ev_realloc_emul (void *ptr, long size) 1559ev_realloc_emul (void *ptr, long size) EV_THROW
664{ 1560{
665#if __GLIBC__
666 return realloc (ptr, size);
667#else
668 /* some systems, notably openbsd and darwin, fail to properly 1561 /* some systems, notably openbsd and darwin, fail to properly
669 * implement realloc (x, 0) (as required by both ansi c-89 and 1562 * implement realloc (x, 0) (as required by both ansi c-89 and
670 * the single unix specification, so work around them here. 1563 * the single unix specification, so work around them here.
1564 * recently, also (at least) fedora and debian started breaking it,
1565 * despite documenting it otherwise.
671 */ 1566 */
672 1567
673 if (size) 1568 if (size)
674 return realloc (ptr, size); 1569 return realloc (ptr, size);
675 1570
676 free (ptr); 1571 free (ptr);
677 return 0; 1572 return 0;
678#endif
679} 1573}
680 1574
681static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1575static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;
682 1576
683void 1577void ecb_cold
684ev_set_allocator (void *(*cb)(void *ptr, long size)) 1578ev_set_allocator (void *(*cb)(void *ptr, long size) EV_THROW) EV_THROW
685{ 1579{
686 alloc = cb; 1580 alloc = cb;
687} 1581}
688 1582
689inline_speed void * 1583inline_speed void *
… …
777 #undef VAR 1671 #undef VAR
778 }; 1672 };
779 #include "ev_wrap.h" 1673 #include "ev_wrap.h"
780 1674
781 static struct ev_loop default_loop_struct; 1675 static struct ev_loop default_loop_struct;
782 struct ev_loop *ev_default_loop_ptr; 1676 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
783 1677
784#else 1678#else
785 1679
786 ev_tstamp ev_rt_now; 1680 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */
787 #define VAR(name,decl) static decl; 1681 #define VAR(name,decl) static decl;
788 #include "ev_vars.h" 1682 #include "ev_vars.h"
789 #undef VAR 1683 #undef VAR
790 1684
791 static int ev_default_loop_ptr; 1685 static int ev_default_loop_ptr;
… …
806 1700
807/*****************************************************************************/ 1701/*****************************************************************************/
808 1702
809#ifndef EV_HAVE_EV_TIME 1703#ifndef EV_HAVE_EV_TIME
810ev_tstamp 1704ev_tstamp
811ev_time (void) 1705ev_time (void) EV_THROW
812{ 1706{
813#if EV_USE_REALTIME 1707#if EV_USE_REALTIME
814 if (expect_true (have_realtime)) 1708 if (expect_true (have_realtime))
815 { 1709 {
816 struct timespec ts; 1710 struct timespec ts;
… …
840 return ev_time (); 1734 return ev_time ();
841} 1735}
842 1736
843#if EV_MULTIPLICITY 1737#if EV_MULTIPLICITY
844ev_tstamp 1738ev_tstamp
845ev_now (EV_P) 1739ev_now (EV_P) EV_THROW
846{ 1740{
847 return ev_rt_now; 1741 return ev_rt_now;
848} 1742}
849#endif 1743#endif
850 1744
851void 1745void
852ev_sleep (ev_tstamp delay) 1746ev_sleep (ev_tstamp delay) EV_THROW
853{ 1747{
854 if (delay > 0.) 1748 if (delay > 0.)
855 { 1749 {
856#if EV_USE_NANOSLEEP 1750#if EV_USE_NANOSLEEP
857 struct timespec ts; 1751 struct timespec ts;
858 1752
859 EV_TS_SET (ts, delay); 1753 EV_TS_SET (ts, delay);
860 nanosleep (&ts, 0); 1754 nanosleep (&ts, 0);
861#elif defined(_WIN32) 1755#elif defined _WIN32
862 Sleep ((unsigned long)(delay * 1e3)); 1756 Sleep ((unsigned long)(delay * 1e3));
863#else 1757#else
864 struct timeval tv; 1758 struct timeval tv;
865 1759
866 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1760 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
… …
870 select (0, 0, 0, 0, &tv); 1764 select (0, 0, 0, 0, &tv);
871#endif 1765#endif
872 } 1766 }
873} 1767}
874 1768
875inline_speed int
876ev_timeout_to_ms (ev_tstamp timeout)
877{
878 int ms = timeout * 1000. + .999999;
879
880 return expect_true (ms) ? ms : timeout < 1e-6 ? 0 : 1;
881}
882
883/*****************************************************************************/ 1769/*****************************************************************************/
884 1770
885#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 1771#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
886 1772
887/* find a suitable new size for the given array, */ 1773/* find a suitable new size for the given array, */
… …
893 1779
894 do 1780 do
895 ncur <<= 1; 1781 ncur <<= 1;
896 while (cnt > ncur); 1782 while (cnt > ncur);
897 1783
898 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1784 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
899 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1785 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
900 { 1786 {
901 ncur *= elem; 1787 ncur *= elem;
902 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1788 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
903 ncur = ncur - sizeof (void *) * 4; 1789 ncur = ncur - sizeof (void *) * 4;
… …
905 } 1791 }
906 1792
907 return ncur; 1793 return ncur;
908} 1794}
909 1795
910static noinline void * 1796static void * noinline ecb_cold
911array_realloc (int elem, void *base, int *cur, int cnt) 1797array_realloc (int elem, void *base, int *cur, int cnt)
912{ 1798{
913 *cur = array_nextsize (elem, *cur, cnt); 1799 *cur = array_nextsize (elem, *cur, cnt);
914 return ev_realloc (base, elem * *cur); 1800 return ev_realloc (base, elem * *cur);
915} 1801}
… …
918 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1804 memset ((void *)(base), 0, sizeof (*(base)) * (count))
919 1805
920#define array_needsize(type,base,cur,cnt,init) \ 1806#define array_needsize(type,base,cur,cnt,init) \
921 if (expect_false ((cnt) > (cur))) \ 1807 if (expect_false ((cnt) > (cur))) \
922 { \ 1808 { \
923 int ocur_ = (cur); \ 1809 int ecb_unused ocur_ = (cur); \
924 (base) = (type *)array_realloc \ 1810 (base) = (type *)array_realloc \
925 (sizeof (type), (base), &(cur), (cnt)); \ 1811 (sizeof (type), (base), &(cur), (cnt)); \
926 init ((base) + (ocur_), (cur) - ocur_); \ 1812 init ((base) + (ocur_), (cur) - ocur_); \
927 } 1813 }
928 1814
… …
946pendingcb (EV_P_ ev_prepare *w, int revents) 1832pendingcb (EV_P_ ev_prepare *w, int revents)
947{ 1833{
948} 1834}
949 1835
950void noinline 1836void noinline
951ev_feed_event (EV_P_ void *w, int revents) 1837ev_feed_event (EV_P_ void *w, int revents) EV_THROW
952{ 1838{
953 W w_ = (W)w; 1839 W w_ = (W)w;
954 int pri = ABSPRI (w_); 1840 int pri = ABSPRI (w_);
955 1841
956 if (expect_false (w_->pending)) 1842 if (expect_false (w_->pending))
… …
960 w_->pending = ++pendingcnt [pri]; 1846 w_->pending = ++pendingcnt [pri];
961 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 1847 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
962 pendings [pri][w_->pending - 1].w = w_; 1848 pendings [pri][w_->pending - 1].w = w_;
963 pendings [pri][w_->pending - 1].events = revents; 1849 pendings [pri][w_->pending - 1].events = revents;
964 } 1850 }
1851
1852 pendingpri = NUMPRI - 1;
965} 1853}
966 1854
967inline_speed void 1855inline_speed void
968feed_reverse (EV_P_ W w) 1856feed_reverse (EV_P_ W w)
969{ 1857{
… …
1015 if (expect_true (!anfd->reify)) 1903 if (expect_true (!anfd->reify))
1016 fd_event_nocheck (EV_A_ fd, revents); 1904 fd_event_nocheck (EV_A_ fd, revents);
1017} 1905}
1018 1906
1019void 1907void
1020ev_feed_fd_event (EV_P_ int fd, int revents) 1908ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW
1021{ 1909{
1022 if (fd >= 0 && fd < anfdmax) 1910 if (fd >= 0 && fd < anfdmax)
1023 fd_event_nocheck (EV_A_ fd, revents); 1911 fd_event_nocheck (EV_A_ fd, revents);
1024} 1912}
1025 1913
… …
1098 fdchanges [fdchangecnt - 1] = fd; 1986 fdchanges [fdchangecnt - 1] = fd;
1099 } 1987 }
1100} 1988}
1101 1989
1102/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 1990/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1103inline_speed void 1991inline_speed void ecb_cold
1104fd_kill (EV_P_ int fd) 1992fd_kill (EV_P_ int fd)
1105{ 1993{
1106 ev_io *w; 1994 ev_io *w;
1107 1995
1108 while ((w = (ev_io *)anfds [fd].head)) 1996 while ((w = (ev_io *)anfds [fd].head))
… …
1111 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1999 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
1112 } 2000 }
1113} 2001}
1114 2002
1115/* check whether the given fd is actually valid, for error recovery */ 2003/* check whether the given fd is actually valid, for error recovery */
1116inline_size int 2004inline_size int ecb_cold
1117fd_valid (int fd) 2005fd_valid (int fd)
1118{ 2006{
1119#ifdef _WIN32 2007#ifdef _WIN32
1120 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 2008 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1121#else 2009#else
1122 return fcntl (fd, F_GETFD) != -1; 2010 return fcntl (fd, F_GETFD) != -1;
1123#endif 2011#endif
1124} 2012}
1125 2013
1126/* called on EBADF to verify fds */ 2014/* called on EBADF to verify fds */
1127static void noinline 2015static void noinline ecb_cold
1128fd_ebadf (EV_P) 2016fd_ebadf (EV_P)
1129{ 2017{
1130 int fd; 2018 int fd;
1131 2019
1132 for (fd = 0; fd < anfdmax; ++fd) 2020 for (fd = 0; fd < anfdmax; ++fd)
… …
1134 if (!fd_valid (fd) && errno == EBADF) 2022 if (!fd_valid (fd) && errno == EBADF)
1135 fd_kill (EV_A_ fd); 2023 fd_kill (EV_A_ fd);
1136} 2024}
1137 2025
1138/* called on ENOMEM in select/poll to kill some fds and retry */ 2026/* called on ENOMEM in select/poll to kill some fds and retry */
1139static void noinline 2027static void noinline ecb_cold
1140fd_enomem (EV_P) 2028fd_enomem (EV_P)
1141{ 2029{
1142 int fd; 2030 int fd;
1143 2031
1144 for (fd = anfdmax; fd--; ) 2032 for (fd = anfdmax; fd--; )
… …
1339 2227
1340/*****************************************************************************/ 2228/*****************************************************************************/
1341 2229
1342#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2230#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1343 2231
1344static void noinline 2232static void noinline ecb_cold
1345evpipe_init (EV_P) 2233evpipe_init (EV_P)
1346{ 2234{
1347 if (!ev_is_active (&pipe_w)) 2235 if (!ev_is_active (&pipe_w))
1348 { 2236 {
2237 int fds [2];
2238
1349# if EV_USE_EVENTFD 2239# if EV_USE_EVENTFD
2240 fds [0] = -1;
1350 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2241 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1351 if (evfd < 0 && errno == EINVAL) 2242 if (fds [1] < 0 && errno == EINVAL)
1352 evfd = eventfd (0, 0); 2243 fds [1] = eventfd (0, 0);
1353 2244
1354 if (evfd >= 0) 2245 if (fds [1] < 0)
2246# endif
1355 { 2247 {
2248 while (pipe (fds))
2249 ev_syserr ("(libev) error creating signal/async pipe");
2250
2251 fd_intern (fds [0]);
2252 }
2253
1356 evpipe [0] = -1; 2254 evpipe [0] = fds [0];
1357 fd_intern (evfd); /* doing it twice doesn't hurt */ 2255
1358 ev_io_set (&pipe_w, evfd, EV_READ); 2256 if (evpipe [1] < 0)
2257 evpipe [1] = fds [1]; /* first call, set write fd */
2258 else
2259 {
2260 /* on subsequent calls, do not change evpipe [1] */
2261 /* so that evpipe_write can always rely on its value. */
2262 /* this branch does not do anything sensible on windows, */
2263 /* so must not be executed on windows */
2264
2265 dup2 (fds [1], evpipe [1]);
2266 close (fds [1]);
2267 }
2268
2269 fd_intern (evpipe [1]);
2270
2271 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2272 ev_io_start (EV_A_ &pipe_w);
2273 ev_unref (EV_A); /* watcher should not keep loop alive */
2274 }
2275}
2276
2277inline_speed void
2278evpipe_write (EV_P_ EV_ATOMIC_T *flag)
2279{
2280 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
2281
2282 if (expect_true (*flag))
2283 return;
2284
2285 *flag = 1;
2286 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2287
2288 pipe_write_skipped = 1;
2289
2290 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2291
2292 if (pipe_write_wanted)
2293 {
2294 int old_errno;
2295
2296 pipe_write_skipped = 0;
2297 ECB_MEMORY_FENCE_RELEASE;
2298
2299 old_errno = errno; /* save errno because write will clobber it */
2300
2301#if EV_USE_EVENTFD
2302 if (evpipe [0] < 0)
2303 {
2304 uint64_t counter = 1;
2305 write (evpipe [1], &counter, sizeof (uint64_t));
1359 } 2306 }
1360 else 2307 else
1361# endif 2308#endif
1362 { 2309 {
1363 while (pipe (evpipe)) 2310#ifdef _WIN32
1364 ev_syserr ("(libev) error creating signal/async pipe"); 2311 WSABUF buf;
1365 2312 DWORD sent;
1366 fd_intern (evpipe [0]); 2313 buf.buf = &buf;
1367 fd_intern (evpipe [1]); 2314 buf.len = 1;
1368 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2315 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
2316#else
2317 write (evpipe [1], &(evpipe [1]), 1);
2318#endif
1369 } 2319 }
1370
1371 ev_io_start (EV_A_ &pipe_w);
1372 ev_unref (EV_A); /* watcher should not keep loop alive */
1373 }
1374}
1375
1376inline_size void
1377evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1378{
1379 if (!*flag)
1380 {
1381 int old_errno = errno; /* save errno because write might clobber it */
1382 char dummy;
1383
1384 *flag = 1;
1385
1386#if EV_USE_EVENTFD
1387 if (evfd >= 0)
1388 {
1389 uint64_t counter = 1;
1390 write (evfd, &counter, sizeof (uint64_t));
1391 }
1392 else
1393#endif
1394 /* win32 people keep sending patches that change this write() to send() */
1395 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1396 /* so when you think this write should be a send instead, please find out */
1397 /* where your send() is from - it's definitely not the microsoft send, and */
1398 /* tell me. thank you. */
1399 write (evpipe [1], &dummy, 1);
1400 2320
1401 errno = old_errno; 2321 errno = old_errno;
1402 } 2322 }
1403} 2323}
1404 2324
… …
1407static void 2327static void
1408pipecb (EV_P_ ev_io *iow, int revents) 2328pipecb (EV_P_ ev_io *iow, int revents)
1409{ 2329{
1410 int i; 2330 int i;
1411 2331
2332 if (revents & EV_READ)
2333 {
1412#if EV_USE_EVENTFD 2334#if EV_USE_EVENTFD
1413 if (evfd >= 0) 2335 if (evpipe [0] < 0)
1414 { 2336 {
1415 uint64_t counter; 2337 uint64_t counter;
1416 read (evfd, &counter, sizeof (uint64_t)); 2338 read (evpipe [1], &counter, sizeof (uint64_t));
1417 } 2339 }
1418 else 2340 else
1419#endif 2341#endif
1420 { 2342 {
1421 char dummy; 2343 char dummy[4];
1422 /* see discussion in evpipe_write when you think this read should be recv in win32 */ 2344#ifdef _WIN32
2345 WSABUF buf;
2346 DWORD recvd;
2347 DWORD flags = 0;
2348 buf.buf = dummy;
2349 buf.len = sizeof (dummy);
2350 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2351#else
1423 read (evpipe [0], &dummy, 1); 2352 read (evpipe [0], &dummy, sizeof (dummy));
2353#endif
2354 }
1424 } 2355 }
2356
2357 pipe_write_skipped = 0;
2358
2359 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
1425 2360
1426#if EV_SIGNAL_ENABLE 2361#if EV_SIGNAL_ENABLE
1427 if (sig_pending) 2362 if (sig_pending)
1428 { 2363 {
1429 sig_pending = 0; 2364 sig_pending = 0;
2365
2366 ECB_MEMORY_FENCE;
1430 2367
1431 for (i = EV_NSIG - 1; i--; ) 2368 for (i = EV_NSIG - 1; i--; )
1432 if (expect_false (signals [i].pending)) 2369 if (expect_false (signals [i].pending))
1433 ev_feed_signal_event (EV_A_ i + 1); 2370 ev_feed_signal_event (EV_A_ i + 1);
1434 } 2371 }
… …
1436 2373
1437#if EV_ASYNC_ENABLE 2374#if EV_ASYNC_ENABLE
1438 if (async_pending) 2375 if (async_pending)
1439 { 2376 {
1440 async_pending = 0; 2377 async_pending = 0;
2378
2379 ECB_MEMORY_FENCE;
1441 2380
1442 for (i = asynccnt; i--; ) 2381 for (i = asynccnt; i--; )
1443 if (asyncs [i]->sent) 2382 if (asyncs [i]->sent)
1444 { 2383 {
1445 asyncs [i]->sent = 0; 2384 asyncs [i]->sent = 0;
2385 ECB_MEMORY_FENCE_RELEASE;
1446 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2386 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1447 } 2387 }
1448 } 2388 }
1449#endif 2389#endif
1450} 2390}
1451 2391
1452/*****************************************************************************/ 2392/*****************************************************************************/
1453 2393
1454void 2394void
1455ev_feed_signal (int signum) 2395ev_feed_signal (int signum) EV_THROW
1456{ 2396{
1457#if EV_MULTIPLICITY 2397#if EV_MULTIPLICITY
2398 EV_P;
2399 ECB_MEMORY_FENCE_ACQUIRE;
1458 EV_P = signals [signum - 1].loop; 2400 EV_A = signals [signum - 1].loop;
1459 2401
1460 if (!EV_A) 2402 if (!EV_A)
1461 return; 2403 return;
1462#endif 2404#endif
1463 2405
… …
1474 2416
1475 ev_feed_signal (signum); 2417 ev_feed_signal (signum);
1476} 2418}
1477 2419
1478void noinline 2420void noinline
1479ev_feed_signal_event (EV_P_ int signum) 2421ev_feed_signal_event (EV_P_ int signum) EV_THROW
1480{ 2422{
1481 WL w; 2423 WL w;
1482 2424
1483 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2425 if (expect_false (signum <= 0 || signum >= EV_NSIG))
1484 return; 2426 return;
1485 2427
1486 --signum; 2428 --signum;
1487 2429
1488#if EV_MULTIPLICITY 2430#if EV_MULTIPLICITY
… …
1492 if (expect_false (signals [signum].loop != EV_A)) 2434 if (expect_false (signals [signum].loop != EV_A))
1493 return; 2435 return;
1494#endif 2436#endif
1495 2437
1496 signals [signum].pending = 0; 2438 signals [signum].pending = 0;
2439 ECB_MEMORY_FENCE_RELEASE;
1497 2440
1498 for (w = signals [signum].head; w; w = w->next) 2441 for (w = signals [signum].head; w; w = w->next)
1499 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2442 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1500} 2443}
1501 2444
… …
1599#endif 2542#endif
1600#if EV_USE_SELECT 2543#if EV_USE_SELECT
1601# include "ev_select.c" 2544# include "ev_select.c"
1602#endif 2545#endif
1603 2546
1604int 2547int ecb_cold
1605ev_version_major (void) 2548ev_version_major (void) EV_THROW
1606{ 2549{
1607 return EV_VERSION_MAJOR; 2550 return EV_VERSION_MAJOR;
1608} 2551}
1609 2552
1610int 2553int ecb_cold
1611ev_version_minor (void) 2554ev_version_minor (void) EV_THROW
1612{ 2555{
1613 return EV_VERSION_MINOR; 2556 return EV_VERSION_MINOR;
1614} 2557}
1615 2558
1616/* return true if we are running with elevated privileges and should ignore env variables */ 2559/* return true if we are running with elevated privileges and should ignore env variables */
1617int inline_size 2560int inline_size ecb_cold
1618enable_secure (void) 2561enable_secure (void)
1619{ 2562{
1620#ifdef _WIN32 2563#ifdef _WIN32
1621 return 0; 2564 return 0;
1622#else 2565#else
1623 return getuid () != geteuid () 2566 return getuid () != geteuid ()
1624 || getgid () != getegid (); 2567 || getgid () != getegid ();
1625#endif 2568#endif
1626} 2569}
1627 2570
1628unsigned int 2571unsigned int ecb_cold
1629ev_supported_backends (void) 2572ev_supported_backends (void) EV_THROW
1630{ 2573{
1631 unsigned int flags = 0; 2574 unsigned int flags = 0;
1632 2575
1633 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2576 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1634 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2577 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
… …
1637 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2580 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1638 2581
1639 return flags; 2582 return flags;
1640} 2583}
1641 2584
1642unsigned int 2585unsigned int ecb_cold
1643ev_recommended_backends (void) 2586ev_recommended_backends (void) EV_THROW
1644{ 2587{
1645 unsigned int flags = ev_supported_backends (); 2588 unsigned int flags = ev_supported_backends ();
1646 2589
1647#ifndef __NetBSD__ 2590#ifndef __NetBSD__
1648 /* kqueue is borked on everything but netbsd apparently */ 2591 /* kqueue is borked on everything but netbsd apparently */
… …
1659#endif 2602#endif
1660 2603
1661 return flags; 2604 return flags;
1662} 2605}
1663 2606
1664unsigned int 2607unsigned int ecb_cold
1665ev_embeddable_backends (void) 2608ev_embeddable_backends (void) EV_THROW
1666{ 2609{
1667 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2610 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1668 2611
1669 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2612 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1670 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */ 2613 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
… …
1672 2615
1673 return flags; 2616 return flags;
1674} 2617}
1675 2618
1676unsigned int 2619unsigned int
1677ev_backend (EV_P) 2620ev_backend (EV_P) EV_THROW
1678{ 2621{
1679 return backend; 2622 return backend;
1680} 2623}
1681 2624
1682#if EV_FEATURE_API 2625#if EV_FEATURE_API
1683unsigned int 2626unsigned int
1684ev_iteration (EV_P) 2627ev_iteration (EV_P) EV_THROW
1685{ 2628{
1686 return loop_count; 2629 return loop_count;
1687} 2630}
1688 2631
1689unsigned int 2632unsigned int
1690ev_depth (EV_P) 2633ev_depth (EV_P) EV_THROW
1691{ 2634{
1692 return loop_depth; 2635 return loop_depth;
1693} 2636}
1694 2637
1695void 2638void
1696ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2639ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1697{ 2640{
1698 io_blocktime = interval; 2641 io_blocktime = interval;
1699} 2642}
1700 2643
1701void 2644void
1702ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2645ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1703{ 2646{
1704 timeout_blocktime = interval; 2647 timeout_blocktime = interval;
1705} 2648}
1706 2649
1707void 2650void
1708ev_set_userdata (EV_P_ void *data) 2651ev_set_userdata (EV_P_ void *data) EV_THROW
1709{ 2652{
1710 userdata = data; 2653 userdata = data;
1711} 2654}
1712 2655
1713void * 2656void *
1714ev_userdata (EV_P) 2657ev_userdata (EV_P) EV_THROW
1715{ 2658{
1716 return userdata; 2659 return userdata;
1717} 2660}
1718 2661
2662void
1719void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2663ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_THROW
1720{ 2664{
1721 invoke_cb = invoke_pending_cb; 2665 invoke_cb = invoke_pending_cb;
1722} 2666}
1723 2667
2668void
1724void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2669ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_THROW, void (*acquire)(EV_P) EV_THROW) EV_THROW
1725{ 2670{
1726 release_cb = release; 2671 release_cb = release;
1727 acquire_cb = acquire; 2672 acquire_cb = acquire;
1728} 2673}
1729#endif 2674#endif
1730 2675
1731/* initialise a loop structure, must be zero-initialised */ 2676/* initialise a loop structure, must be zero-initialised */
1732static void noinline 2677static void noinline ecb_cold
1733loop_init (EV_P_ unsigned int flags) 2678loop_init (EV_P_ unsigned int flags) EV_THROW
1734{ 2679{
1735 if (!backend) 2680 if (!backend)
1736 { 2681 {
1737 origflags = flags; 2682 origflags = flags;
1738 2683
… …
1765 if (!(flags & EVFLAG_NOENV) 2710 if (!(flags & EVFLAG_NOENV)
1766 && !enable_secure () 2711 && !enable_secure ()
1767 && getenv ("LIBEV_FLAGS")) 2712 && getenv ("LIBEV_FLAGS"))
1768 flags = atoi (getenv ("LIBEV_FLAGS")); 2713 flags = atoi (getenv ("LIBEV_FLAGS"));
1769 2714
1770 ev_rt_now = ev_time (); 2715 ev_rt_now = ev_time ();
1771 mn_now = get_clock (); 2716 mn_now = get_clock ();
1772 now_floor = mn_now; 2717 now_floor = mn_now;
1773 rtmn_diff = ev_rt_now - mn_now; 2718 rtmn_diff = ev_rt_now - mn_now;
1774#if EV_FEATURE_API 2719#if EV_FEATURE_API
1775 invoke_cb = ev_invoke_pending; 2720 invoke_cb = ev_invoke_pending;
1776#endif 2721#endif
1777 2722
1778 io_blocktime = 0.; 2723 io_blocktime = 0.;
1779 timeout_blocktime = 0.; 2724 timeout_blocktime = 0.;
1780 backend = 0; 2725 backend = 0;
1781 backend_fd = -1; 2726 backend_fd = -1;
1782 sig_pending = 0; 2727 sig_pending = 0;
1783#if EV_ASYNC_ENABLE 2728#if EV_ASYNC_ENABLE
1784 async_pending = 0; 2729 async_pending = 0;
1785#endif 2730#endif
2731 pipe_write_skipped = 0;
2732 pipe_write_wanted = 0;
2733 evpipe [0] = -1;
2734 evpipe [1] = -1;
1786#if EV_USE_INOTIFY 2735#if EV_USE_INOTIFY
1787 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 2736 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1788#endif 2737#endif
1789#if EV_USE_SIGNALFD 2738#if EV_USE_SIGNALFD
1790 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 2739 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1791#endif 2740#endif
1792 2741
1793 if (!(flags & EVBACKEND_MASK)) 2742 if (!(flags & EVBACKEND_MASK))
1794 flags |= ev_recommended_backends (); 2743 flags |= ev_recommended_backends ();
1795 2744
… …
1820#endif 2769#endif
1821 } 2770 }
1822} 2771}
1823 2772
1824/* free up a loop structure */ 2773/* free up a loop structure */
1825void 2774void ecb_cold
1826ev_loop_destroy (EV_P) 2775ev_loop_destroy (EV_P)
1827{ 2776{
1828 int i; 2777 int i;
1829 2778
1830#if EV_MULTIPLICITY 2779#if EV_MULTIPLICITY
… …
1841 EV_INVOKE_PENDING; 2790 EV_INVOKE_PENDING;
1842 } 2791 }
1843#endif 2792#endif
1844 2793
1845#if EV_CHILD_ENABLE 2794#if EV_CHILD_ENABLE
1846 if (ev_is_active (&childev)) 2795 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
1847 { 2796 {
1848 ev_ref (EV_A); /* child watcher */ 2797 ev_ref (EV_A); /* child watcher */
1849 ev_signal_stop (EV_A_ &childev); 2798 ev_signal_stop (EV_A_ &childev);
1850 } 2799 }
1851#endif 2800#endif
… …
1853 if (ev_is_active (&pipe_w)) 2802 if (ev_is_active (&pipe_w))
1854 { 2803 {
1855 /*ev_ref (EV_A);*/ 2804 /*ev_ref (EV_A);*/
1856 /*ev_io_stop (EV_A_ &pipe_w);*/ 2805 /*ev_io_stop (EV_A_ &pipe_w);*/
1857 2806
1858#if EV_USE_EVENTFD
1859 if (evfd >= 0)
1860 close (evfd);
1861#endif
1862
1863 if (evpipe [0] >= 0)
1864 {
1865 EV_WIN32_CLOSE_FD (evpipe [0]); 2807 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
1866 EV_WIN32_CLOSE_FD (evpipe [1]); 2808 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
1867 }
1868 } 2809 }
1869 2810
1870#if EV_USE_SIGNALFD 2811#if EV_USE_SIGNALFD
1871 if (ev_is_active (&sigfd_w)) 2812 if (ev_is_active (&sigfd_w))
1872 close (sigfd); 2813 close (sigfd);
… …
1958#endif 2899#endif
1959#if EV_USE_INOTIFY 2900#if EV_USE_INOTIFY
1960 infy_fork (EV_A); 2901 infy_fork (EV_A);
1961#endif 2902#endif
1962 2903
2904#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1963 if (ev_is_active (&pipe_w)) 2905 if (ev_is_active (&pipe_w))
1964 { 2906 {
1965 /* this "locks" the handlers against writing to the pipe */ 2907 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1966 /* while we modify the fd vars */
1967 sig_pending = 1;
1968#if EV_ASYNC_ENABLE
1969 async_pending = 1;
1970#endif
1971 2908
1972 ev_ref (EV_A); 2909 ev_ref (EV_A);
1973 ev_io_stop (EV_A_ &pipe_w); 2910 ev_io_stop (EV_A_ &pipe_w);
1974 2911
1975#if EV_USE_EVENTFD
1976 if (evfd >= 0)
1977 close (evfd);
1978#endif
1979
1980 if (evpipe [0] >= 0) 2912 if (evpipe [0] >= 0)
1981 {
1982 EV_WIN32_CLOSE_FD (evpipe [0]); 2913 EV_WIN32_CLOSE_FD (evpipe [0]);
1983 EV_WIN32_CLOSE_FD (evpipe [1]);
1984 }
1985 2914
1986#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1987 evpipe_init (EV_A); 2915 evpipe_init (EV_A);
1988 /* now iterate over everything, in case we missed something */ 2916 /* iterate over everything, in case we missed something before */
1989 pipecb (EV_A_ &pipe_w, EV_READ); 2917 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
1990#endif
1991 } 2918 }
2919#endif
1992 2920
1993 postfork = 0; 2921 postfork = 0;
1994} 2922}
1995 2923
1996#if EV_MULTIPLICITY 2924#if EV_MULTIPLICITY
1997 2925
1998struct ev_loop * 2926struct ev_loop * ecb_cold
1999ev_loop_new (unsigned int flags) 2927ev_loop_new (unsigned int flags) EV_THROW
2000{ 2928{
2001 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2929 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
2002 2930
2003 memset (EV_A, 0, sizeof (struct ev_loop)); 2931 memset (EV_A, 0, sizeof (struct ev_loop));
2004 loop_init (EV_A_ flags); 2932 loop_init (EV_A_ flags);
… …
2011} 2939}
2012 2940
2013#endif /* multiplicity */ 2941#endif /* multiplicity */
2014 2942
2015#if EV_VERIFY 2943#if EV_VERIFY
2016static void noinline 2944static void noinline ecb_cold
2017verify_watcher (EV_P_ W w) 2945verify_watcher (EV_P_ W w)
2018{ 2946{
2019 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2947 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
2020 2948
2021 if (w->pending) 2949 if (w->pending)
2022 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2950 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
2023} 2951}
2024 2952
2025static void noinline 2953static void noinline ecb_cold
2026verify_heap (EV_P_ ANHE *heap, int N) 2954verify_heap (EV_P_ ANHE *heap, int N)
2027{ 2955{
2028 int i; 2956 int i;
2029 2957
2030 for (i = HEAP0; i < N + HEAP0; ++i) 2958 for (i = HEAP0; i < N + HEAP0; ++i)
… …
2035 2963
2036 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2964 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
2037 } 2965 }
2038} 2966}
2039 2967
2040static void noinline 2968static void noinline ecb_cold
2041array_verify (EV_P_ W *ws, int cnt) 2969array_verify (EV_P_ W *ws, int cnt)
2042{ 2970{
2043 while (cnt--) 2971 while (cnt--)
2044 { 2972 {
2045 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2973 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
2047 } 2975 }
2048} 2976}
2049#endif 2977#endif
2050 2978
2051#if EV_FEATURE_API 2979#if EV_FEATURE_API
2052void 2980void ecb_cold
2053ev_verify (EV_P) 2981ev_verify (EV_P) EV_THROW
2054{ 2982{
2055#if EV_VERIFY 2983#if EV_VERIFY
2056 int i; 2984 int i;
2057 WL w; 2985 WL w, w2;
2058 2986
2059 assert (activecnt >= -1); 2987 assert (activecnt >= -1);
2060 2988
2061 assert (fdchangemax >= fdchangecnt); 2989 assert (fdchangemax >= fdchangecnt);
2062 for (i = 0; i < fdchangecnt; ++i) 2990 for (i = 0; i < fdchangecnt; ++i)
2063 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 2991 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
2064 2992
2065 assert (anfdmax >= 0); 2993 assert (anfdmax >= 0);
2066 for (i = 0; i < anfdmax; ++i) 2994 for (i = 0; i < anfdmax; ++i)
2995 {
2996 int j = 0;
2997
2067 for (w = anfds [i].head; w; w = w->next) 2998 for (w = w2 = anfds [i].head; w; w = w->next)
2068 { 2999 {
2069 verify_watcher (EV_A_ (W)w); 3000 verify_watcher (EV_A_ (W)w);
3001
3002 if (j++ & 1)
3003 {
3004 assert (("libev: io watcher list contains a loop", w != w2));
3005 w2 = w2->next;
3006 }
3007
2070 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 3008 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
2071 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 3009 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
2072 } 3010 }
3011 }
2073 3012
2074 assert (timermax >= timercnt); 3013 assert (timermax >= timercnt);
2075 verify_heap (EV_A_ timers, timercnt); 3014 verify_heap (EV_A_ timers, timercnt);
2076 3015
2077#if EV_PERIODIC_ENABLE 3016#if EV_PERIODIC_ENABLE
… …
2123#endif 3062#endif
2124} 3063}
2125#endif 3064#endif
2126 3065
2127#if EV_MULTIPLICITY 3066#if EV_MULTIPLICITY
2128struct ev_loop * 3067struct ev_loop * ecb_cold
2129#else 3068#else
2130int 3069int
2131#endif 3070#endif
2132ev_default_loop (unsigned int flags) 3071ev_default_loop (unsigned int flags) EV_THROW
2133{ 3072{
2134 if (!ev_default_loop_ptr) 3073 if (!ev_default_loop_ptr)
2135 { 3074 {
2136#if EV_MULTIPLICITY 3075#if EV_MULTIPLICITY
2137 EV_P = ev_default_loop_ptr = &default_loop_struct; 3076 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
2156 3095
2157 return ev_default_loop_ptr; 3096 return ev_default_loop_ptr;
2158} 3097}
2159 3098
2160void 3099void
2161ev_loop_fork (EV_P) 3100ev_loop_fork (EV_P) EV_THROW
2162{ 3101{
2163 postfork = 1; /* must be in line with ev_default_fork */ 3102 postfork = 1;
2164} 3103}
2165 3104
2166/*****************************************************************************/ 3105/*****************************************************************************/
2167 3106
2168void 3107void
… …
2170{ 3109{
2171 EV_CB_INVOKE ((W)w, revents); 3110 EV_CB_INVOKE ((W)w, revents);
2172} 3111}
2173 3112
2174unsigned int 3113unsigned int
2175ev_pending_count (EV_P) 3114ev_pending_count (EV_P) EV_THROW
2176{ 3115{
2177 int pri; 3116 int pri;
2178 unsigned int count = 0; 3117 unsigned int count = 0;
2179 3118
2180 for (pri = NUMPRI; pri--; ) 3119 for (pri = NUMPRI; pri--; )
… …
2184} 3123}
2185 3124
2186void noinline 3125void noinline
2187ev_invoke_pending (EV_P) 3126ev_invoke_pending (EV_P)
2188{ 3127{
2189 int pri; 3128 pendingpri = NUMPRI;
2190 3129
2191 for (pri = NUMPRI; pri--; ) 3130 while (pendingpri) /* pendingpri possibly gets modified in the inner loop */
3131 {
3132 --pendingpri;
3133
2192 while (pendingcnt [pri]) 3134 while (pendingcnt [pendingpri])
2193 { 3135 {
2194 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3136 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2195 3137
2196 p->w->pending = 0; 3138 p->w->pending = 0;
2197 EV_CB_INVOKE (p->w, p->events); 3139 EV_CB_INVOKE (p->w, p->events);
2198 EV_FREQUENT_CHECK; 3140 EV_FREQUENT_CHECK;
2199 } 3141 }
3142 }
2200} 3143}
2201 3144
2202#if EV_IDLE_ENABLE 3145#if EV_IDLE_ENABLE
2203/* make idle watchers pending. this handles the "call-idle */ 3146/* make idle watchers pending. this handles the "call-idle */
2204/* only when higher priorities are idle" logic */ 3147/* only when higher priorities are idle" logic */
… …
2294{ 3237{
2295 EV_FREQUENT_CHECK; 3238 EV_FREQUENT_CHECK;
2296 3239
2297 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3240 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2298 { 3241 {
2299 int feed_count = 0;
2300
2301 do 3242 do
2302 { 3243 {
2303 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3244 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2304 3245
2305 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3246 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
2332 } 3273 }
2333} 3274}
2334 3275
2335/* simply recalculate all periodics */ 3276/* simply recalculate all periodics */
2336/* TODO: maybe ensure that at least one event happens when jumping forward? */ 3277/* TODO: maybe ensure that at least one event happens when jumping forward? */
2337static void noinline 3278static void noinline ecb_cold
2338periodics_reschedule (EV_P) 3279periodics_reschedule (EV_P)
2339{ 3280{
2340 int i; 3281 int i;
2341 3282
2342 /* adjust periodics after time jump */ 3283 /* adjust periodics after time jump */
… …
2355 reheap (periodics, periodiccnt); 3296 reheap (periodics, periodiccnt);
2356} 3297}
2357#endif 3298#endif
2358 3299
2359/* adjust all timers by a given offset */ 3300/* adjust all timers by a given offset */
2360static void noinline 3301static void noinline ecb_cold
2361timers_reschedule (EV_P_ ev_tstamp adjust) 3302timers_reschedule (EV_P_ ev_tstamp adjust)
2362{ 3303{
2363 int i; 3304 int i;
2364 3305
2365 for (i = 0; i < timercnt; ++i) 3306 for (i = 0; i < timercnt; ++i)
… …
2439 3380
2440 mn_now = ev_rt_now; 3381 mn_now = ev_rt_now;
2441 } 3382 }
2442} 3383}
2443 3384
2444void 3385int
2445ev_run (EV_P_ int flags) 3386ev_run (EV_P_ int flags)
2446{ 3387{
2447#if EV_FEATURE_API 3388#if EV_FEATURE_API
2448 ++loop_depth; 3389 ++loop_depth;
2449#endif 3390#endif
… …
2507 ev_tstamp prev_mn_now = mn_now; 3448 ev_tstamp prev_mn_now = mn_now;
2508 3449
2509 /* update time to cancel out callback processing overhead */ 3450 /* update time to cancel out callback processing overhead */
2510 time_update (EV_A_ 1e100); 3451 time_update (EV_A_ 1e100);
2511 3452
3453 /* from now on, we want a pipe-wake-up */
3454 pipe_write_wanted = 1;
3455
3456 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3457
2512 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt))) 3458 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2513 { 3459 {
2514 waittime = MAX_BLOCKTIME; 3460 waittime = MAX_BLOCKTIME;
2515 3461
2516 if (timercnt) 3462 if (timercnt)
2517 { 3463 {
2518 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3464 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2519 if (waittime > to) waittime = to; 3465 if (waittime > to) waittime = to;
2520 } 3466 }
2521 3467
2522#if EV_PERIODIC_ENABLE 3468#if EV_PERIODIC_ENABLE
2523 if (periodiccnt) 3469 if (periodiccnt)
2524 { 3470 {
2525 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3471 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2526 if (waittime > to) waittime = to; 3472 if (waittime > to) waittime = to;
2527 } 3473 }
2528#endif 3474#endif
2529 3475
2530 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3476 /* don't let timeouts decrease the waittime below timeout_blocktime */
2531 if (expect_false (waittime < timeout_blocktime)) 3477 if (expect_false (waittime < timeout_blocktime))
2532 waittime = timeout_blocktime; 3478 waittime = timeout_blocktime;
3479
3480 /* at this point, we NEED to wait, so we have to ensure */
3481 /* to pass a minimum nonzero value to the backend */
3482 if (expect_false (waittime < backend_mintime))
3483 waittime = backend_mintime;
2533 3484
2534 /* extra check because io_blocktime is commonly 0 */ 3485 /* extra check because io_blocktime is commonly 0 */
2535 if (expect_false (io_blocktime)) 3486 if (expect_false (io_blocktime))
2536 { 3487 {
2537 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3488 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2538 3489
2539 if (sleeptime > waittime - backend_fudge) 3490 if (sleeptime > waittime - backend_mintime)
2540 sleeptime = waittime - backend_fudge; 3491 sleeptime = waittime - backend_mintime;
2541 3492
2542 if (expect_true (sleeptime > 0.)) 3493 if (expect_true (sleeptime > 0.))
2543 { 3494 {
2544 ev_sleep (sleeptime); 3495 ev_sleep (sleeptime);
2545 waittime -= sleeptime; 3496 waittime -= sleeptime;
… …
2552#endif 3503#endif
2553 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */ 3504 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2554 backend_poll (EV_A_ waittime); 3505 backend_poll (EV_A_ waittime);
2555 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */ 3506 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2556 3507
3508 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3509
3510 ECB_MEMORY_FENCE_ACQUIRE;
3511 if (pipe_write_skipped)
3512 {
3513 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3514 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3515 }
3516
3517
2557 /* update ev_rt_now, do magic */ 3518 /* update ev_rt_now, do magic */
2558 time_update (EV_A_ waittime + sleeptime); 3519 time_update (EV_A_ waittime + sleeptime);
2559 } 3520 }
2560 3521
2561 /* queue pending timers and reschedule them */ 3522 /* queue pending timers and reschedule them */
… …
2587 loop_done = EVBREAK_CANCEL; 3548 loop_done = EVBREAK_CANCEL;
2588 3549
2589#if EV_FEATURE_API 3550#if EV_FEATURE_API
2590 --loop_depth; 3551 --loop_depth;
2591#endif 3552#endif
3553
3554 return activecnt;
2592} 3555}
2593 3556
2594void 3557void
2595ev_break (EV_P_ int how) 3558ev_break (EV_P_ int how) EV_THROW
2596{ 3559{
2597 loop_done = how; 3560 loop_done = how;
2598} 3561}
2599 3562
2600void 3563void
2601ev_ref (EV_P) 3564ev_ref (EV_P) EV_THROW
2602{ 3565{
2603 ++activecnt; 3566 ++activecnt;
2604} 3567}
2605 3568
2606void 3569void
2607ev_unref (EV_P) 3570ev_unref (EV_P) EV_THROW
2608{ 3571{
2609 --activecnt; 3572 --activecnt;
2610} 3573}
2611 3574
2612void 3575void
2613ev_now_update (EV_P) 3576ev_now_update (EV_P) EV_THROW
2614{ 3577{
2615 time_update (EV_A_ 1e100); 3578 time_update (EV_A_ 1e100);
2616} 3579}
2617 3580
2618void 3581void
2619ev_suspend (EV_P) 3582ev_suspend (EV_P) EV_THROW
2620{ 3583{
2621 ev_now_update (EV_A); 3584 ev_now_update (EV_A);
2622} 3585}
2623 3586
2624void 3587void
2625ev_resume (EV_P) 3588ev_resume (EV_P) EV_THROW
2626{ 3589{
2627 ev_tstamp mn_prev = mn_now; 3590 ev_tstamp mn_prev = mn_now;
2628 3591
2629 ev_now_update (EV_A); 3592 ev_now_update (EV_A);
2630 timers_reschedule (EV_A_ mn_now - mn_prev); 3593 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2669 w->pending = 0; 3632 w->pending = 0;
2670 } 3633 }
2671} 3634}
2672 3635
2673int 3636int
2674ev_clear_pending (EV_P_ void *w) 3637ev_clear_pending (EV_P_ void *w) EV_THROW
2675{ 3638{
2676 W w_ = (W)w; 3639 W w_ = (W)w;
2677 int pending = w_->pending; 3640 int pending = w_->pending;
2678 3641
2679 if (expect_true (pending)) 3642 if (expect_true (pending))
… …
2712} 3675}
2713 3676
2714/*****************************************************************************/ 3677/*****************************************************************************/
2715 3678
2716void noinline 3679void noinline
2717ev_io_start (EV_P_ ev_io *w) 3680ev_io_start (EV_P_ ev_io *w) EV_THROW
2718{ 3681{
2719 int fd = w->fd; 3682 int fd = w->fd;
2720 3683
2721 if (expect_false (ev_is_active (w))) 3684 if (expect_false (ev_is_active (w)))
2722 return; 3685 return;
… …
2728 3691
2729 ev_start (EV_A_ (W)w, 1); 3692 ev_start (EV_A_ (W)w, 1);
2730 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3693 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2731 wlist_add (&anfds[fd].head, (WL)w); 3694 wlist_add (&anfds[fd].head, (WL)w);
2732 3695
3696 /* common bug, apparently */
3697 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3698
2733 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 3699 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2734 w->events &= ~EV__IOFDSET; 3700 w->events &= ~EV__IOFDSET;
2735 3701
2736 EV_FREQUENT_CHECK; 3702 EV_FREQUENT_CHECK;
2737} 3703}
2738 3704
2739void noinline 3705void noinline
2740ev_io_stop (EV_P_ ev_io *w) 3706ev_io_stop (EV_P_ ev_io *w) EV_THROW
2741{ 3707{
2742 clear_pending (EV_A_ (W)w); 3708 clear_pending (EV_A_ (W)w);
2743 if (expect_false (!ev_is_active (w))) 3709 if (expect_false (!ev_is_active (w)))
2744 return; 3710 return;
2745 3711
… …
2754 3720
2755 EV_FREQUENT_CHECK; 3721 EV_FREQUENT_CHECK;
2756} 3722}
2757 3723
2758void noinline 3724void noinline
2759ev_timer_start (EV_P_ ev_timer *w) 3725ev_timer_start (EV_P_ ev_timer *w) EV_THROW
2760{ 3726{
2761 if (expect_false (ev_is_active (w))) 3727 if (expect_false (ev_is_active (w)))
2762 return; 3728 return;
2763 3729
2764 ev_at (w) += mn_now; 3730 ev_at (w) += mn_now;
… …
2778 3744
2779 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3745 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2780} 3746}
2781 3747
2782void noinline 3748void noinline
2783ev_timer_stop (EV_P_ ev_timer *w) 3749ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
2784{ 3750{
2785 clear_pending (EV_A_ (W)w); 3751 clear_pending (EV_A_ (W)w);
2786 if (expect_false (!ev_is_active (w))) 3752 if (expect_false (!ev_is_active (w)))
2787 return; 3753 return;
2788 3754
… …
2808 3774
2809 EV_FREQUENT_CHECK; 3775 EV_FREQUENT_CHECK;
2810} 3776}
2811 3777
2812void noinline 3778void noinline
2813ev_timer_again (EV_P_ ev_timer *w) 3779ev_timer_again (EV_P_ ev_timer *w) EV_THROW
2814{ 3780{
2815 EV_FREQUENT_CHECK; 3781 EV_FREQUENT_CHECK;
3782
3783 clear_pending (EV_A_ (W)w);
2816 3784
2817 if (ev_is_active (w)) 3785 if (ev_is_active (w))
2818 { 3786 {
2819 if (w->repeat) 3787 if (w->repeat)
2820 { 3788 {
… …
2833 3801
2834 EV_FREQUENT_CHECK; 3802 EV_FREQUENT_CHECK;
2835} 3803}
2836 3804
2837ev_tstamp 3805ev_tstamp
2838ev_timer_remaining (EV_P_ ev_timer *w) 3806ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW
2839{ 3807{
2840 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 3808 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2841} 3809}
2842 3810
2843#if EV_PERIODIC_ENABLE 3811#if EV_PERIODIC_ENABLE
2844void noinline 3812void noinline
2845ev_periodic_start (EV_P_ ev_periodic *w) 3813ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
2846{ 3814{
2847 if (expect_false (ev_is_active (w))) 3815 if (expect_false (ev_is_active (w)))
2848 return; 3816 return;
2849 3817
2850 if (w->reschedule_cb) 3818 if (w->reschedule_cb)
… …
2870 3838
2871 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 3839 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2872} 3840}
2873 3841
2874void noinline 3842void noinline
2875ev_periodic_stop (EV_P_ ev_periodic *w) 3843ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
2876{ 3844{
2877 clear_pending (EV_A_ (W)w); 3845 clear_pending (EV_A_ (W)w);
2878 if (expect_false (!ev_is_active (w))) 3846 if (expect_false (!ev_is_active (w)))
2879 return; 3847 return;
2880 3848
… …
2898 3866
2899 EV_FREQUENT_CHECK; 3867 EV_FREQUENT_CHECK;
2900} 3868}
2901 3869
2902void noinline 3870void noinline
2903ev_periodic_again (EV_P_ ev_periodic *w) 3871ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
2904{ 3872{
2905 /* TODO: use adjustheap and recalculation */ 3873 /* TODO: use adjustheap and recalculation */
2906 ev_periodic_stop (EV_A_ w); 3874 ev_periodic_stop (EV_A_ w);
2907 ev_periodic_start (EV_A_ w); 3875 ev_periodic_start (EV_A_ w);
2908} 3876}
… …
2913#endif 3881#endif
2914 3882
2915#if EV_SIGNAL_ENABLE 3883#if EV_SIGNAL_ENABLE
2916 3884
2917void noinline 3885void noinline
2918ev_signal_start (EV_P_ ev_signal *w) 3886ev_signal_start (EV_P_ ev_signal *w) EV_THROW
2919{ 3887{
2920 if (expect_false (ev_is_active (w))) 3888 if (expect_false (ev_is_active (w)))
2921 return; 3889 return;
2922 3890
2923 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 3891 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
… …
2925#if EV_MULTIPLICITY 3893#if EV_MULTIPLICITY
2926 assert (("libev: a signal must not be attached to two different loops", 3894 assert (("libev: a signal must not be attached to two different loops",
2927 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 3895 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2928 3896
2929 signals [w->signum - 1].loop = EV_A; 3897 signals [w->signum - 1].loop = EV_A;
3898 ECB_MEMORY_FENCE_RELEASE;
2930#endif 3899#endif
2931 3900
2932 EV_FREQUENT_CHECK; 3901 EV_FREQUENT_CHECK;
2933 3902
2934#if EV_USE_SIGNALFD 3903#if EV_USE_SIGNALFD
… …
2994 3963
2995 EV_FREQUENT_CHECK; 3964 EV_FREQUENT_CHECK;
2996} 3965}
2997 3966
2998void noinline 3967void noinline
2999ev_signal_stop (EV_P_ ev_signal *w) 3968ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
3000{ 3969{
3001 clear_pending (EV_A_ (W)w); 3970 clear_pending (EV_A_ (W)w);
3002 if (expect_false (!ev_is_active (w))) 3971 if (expect_false (!ev_is_active (w)))
3003 return; 3972 return;
3004 3973
… …
3035#endif 4004#endif
3036 4005
3037#if EV_CHILD_ENABLE 4006#if EV_CHILD_ENABLE
3038 4007
3039void 4008void
3040ev_child_start (EV_P_ ev_child *w) 4009ev_child_start (EV_P_ ev_child *w) EV_THROW
3041{ 4010{
3042#if EV_MULTIPLICITY 4011#if EV_MULTIPLICITY
3043 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4012 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
3044#endif 4013#endif
3045 if (expect_false (ev_is_active (w))) 4014 if (expect_false (ev_is_active (w)))
… …
3052 4021
3053 EV_FREQUENT_CHECK; 4022 EV_FREQUENT_CHECK;
3054} 4023}
3055 4024
3056void 4025void
3057ev_child_stop (EV_P_ ev_child *w) 4026ev_child_stop (EV_P_ ev_child *w) EV_THROW
3058{ 4027{
3059 clear_pending (EV_A_ (W)w); 4028 clear_pending (EV_A_ (W)w);
3060 if (expect_false (!ev_is_active (w))) 4029 if (expect_false (!ev_is_active (w)))
3061 return; 4030 return;
3062 4031
… …
3089# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 4058# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
3090 4059
3091static void noinline 4060static void noinline
3092infy_add (EV_P_ ev_stat *w) 4061infy_add (EV_P_ ev_stat *w)
3093{ 4062{
3094 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); 4063 w->wd = inotify_add_watch (fs_fd, w->path,
4064 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
4065 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
4066 | IN_DONT_FOLLOW | IN_MASK_ADD);
3095 4067
3096 if (w->wd >= 0) 4068 if (w->wd >= 0)
3097 { 4069 {
3098 struct statfs sfs; 4070 struct statfs sfs;
3099 4071
… …
3103 4075
3104 if (!fs_2625) 4076 if (!fs_2625)
3105 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4077 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3106 else if (!statfs (w->path, &sfs) 4078 else if (!statfs (w->path, &sfs)
3107 && (sfs.f_type == 0x1373 /* devfs */ 4079 && (sfs.f_type == 0x1373 /* devfs */
4080 || sfs.f_type == 0x4006 /* fat */
4081 || sfs.f_type == 0x4d44 /* msdos */
3108 || sfs.f_type == 0xEF53 /* ext2/3 */ 4082 || sfs.f_type == 0xEF53 /* ext2/3 */
4083 || sfs.f_type == 0x72b6 /* jffs2 */
4084 || sfs.f_type == 0x858458f6 /* ramfs */
4085 || sfs.f_type == 0x5346544e /* ntfs */
3109 || sfs.f_type == 0x3153464a /* jfs */ 4086 || sfs.f_type == 0x3153464a /* jfs */
4087 || sfs.f_type == 0x9123683e /* btrfs */
3110 || sfs.f_type == 0x52654973 /* reiser3 */ 4088 || sfs.f_type == 0x52654973 /* reiser3 */
3111 || sfs.f_type == 0x01021994 /* tempfs */ 4089 || sfs.f_type == 0x01021994 /* tmpfs */
3112 || sfs.f_type == 0x58465342 /* xfs */)) 4090 || sfs.f_type == 0x58465342 /* xfs */))
3113 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ 4091 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3114 else 4092 else
3115 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ 4093 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
3116 } 4094 }
… …
3214 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4192 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3215 ofs += sizeof (struct inotify_event) + ev->len; 4193 ofs += sizeof (struct inotify_event) + ev->len;
3216 } 4194 }
3217} 4195}
3218 4196
3219inline_size void 4197inline_size void ecb_cold
3220ev_check_2625 (EV_P) 4198ev_check_2625 (EV_P)
3221{ 4199{
3222 /* kernels < 2.6.25 are borked 4200 /* kernels < 2.6.25 are borked
3223 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4201 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3224 */ 4202 */
… …
3229} 4207}
3230 4208
3231inline_size int 4209inline_size int
3232infy_newfd (void) 4210infy_newfd (void)
3233{ 4211{
3234#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 4212#if defined IN_CLOEXEC && defined IN_NONBLOCK
3235 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 4213 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3236 if (fd >= 0) 4214 if (fd >= 0)
3237 return fd; 4215 return fd;
3238#endif 4216#endif
3239 return inotify_init (); 4217 return inotify_init ();
… …
3314#else 4292#else
3315# define EV_LSTAT(p,b) lstat (p, b) 4293# define EV_LSTAT(p,b) lstat (p, b)
3316#endif 4294#endif
3317 4295
3318void 4296void
3319ev_stat_stat (EV_P_ ev_stat *w) 4297ev_stat_stat (EV_P_ ev_stat *w) EV_THROW
3320{ 4298{
3321 if (lstat (w->path, &w->attr) < 0) 4299 if (lstat (w->path, &w->attr) < 0)
3322 w->attr.st_nlink = 0; 4300 w->attr.st_nlink = 0;
3323 else if (!w->attr.st_nlink) 4301 else if (!w->attr.st_nlink)
3324 w->attr.st_nlink = 1; 4302 w->attr.st_nlink = 1;
… …
3363 ev_feed_event (EV_A_ w, EV_STAT); 4341 ev_feed_event (EV_A_ w, EV_STAT);
3364 } 4342 }
3365} 4343}
3366 4344
3367void 4345void
3368ev_stat_start (EV_P_ ev_stat *w) 4346ev_stat_start (EV_P_ ev_stat *w) EV_THROW
3369{ 4347{
3370 if (expect_false (ev_is_active (w))) 4348 if (expect_false (ev_is_active (w)))
3371 return; 4349 return;
3372 4350
3373 ev_stat_stat (EV_A_ w); 4351 ev_stat_stat (EV_A_ w);
… …
3394 4372
3395 EV_FREQUENT_CHECK; 4373 EV_FREQUENT_CHECK;
3396} 4374}
3397 4375
3398void 4376void
3399ev_stat_stop (EV_P_ ev_stat *w) 4377ev_stat_stop (EV_P_ ev_stat *w) EV_THROW
3400{ 4378{
3401 clear_pending (EV_A_ (W)w); 4379 clear_pending (EV_A_ (W)w);
3402 if (expect_false (!ev_is_active (w))) 4380 if (expect_false (!ev_is_active (w)))
3403 return; 4381 return;
3404 4382
… …
3420} 4398}
3421#endif 4399#endif
3422 4400
3423#if EV_IDLE_ENABLE 4401#if EV_IDLE_ENABLE
3424void 4402void
3425ev_idle_start (EV_P_ ev_idle *w) 4403ev_idle_start (EV_P_ ev_idle *w) EV_THROW
3426{ 4404{
3427 if (expect_false (ev_is_active (w))) 4405 if (expect_false (ev_is_active (w)))
3428 return; 4406 return;
3429 4407
3430 pri_adjust (EV_A_ (W)w); 4408 pri_adjust (EV_A_ (W)w);
… …
3443 4421
3444 EV_FREQUENT_CHECK; 4422 EV_FREQUENT_CHECK;
3445} 4423}
3446 4424
3447void 4425void
3448ev_idle_stop (EV_P_ ev_idle *w) 4426ev_idle_stop (EV_P_ ev_idle *w) EV_THROW
3449{ 4427{
3450 clear_pending (EV_A_ (W)w); 4428 clear_pending (EV_A_ (W)w);
3451 if (expect_false (!ev_is_active (w))) 4429 if (expect_false (!ev_is_active (w)))
3452 return; 4430 return;
3453 4431
… …
3467} 4445}
3468#endif 4446#endif
3469 4447
3470#if EV_PREPARE_ENABLE 4448#if EV_PREPARE_ENABLE
3471void 4449void
3472ev_prepare_start (EV_P_ ev_prepare *w) 4450ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW
3473{ 4451{
3474 if (expect_false (ev_is_active (w))) 4452 if (expect_false (ev_is_active (w)))
3475 return; 4453 return;
3476 4454
3477 EV_FREQUENT_CHECK; 4455 EV_FREQUENT_CHECK;
… …
3482 4460
3483 EV_FREQUENT_CHECK; 4461 EV_FREQUENT_CHECK;
3484} 4462}
3485 4463
3486void 4464void
3487ev_prepare_stop (EV_P_ ev_prepare *w) 4465ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW
3488{ 4466{
3489 clear_pending (EV_A_ (W)w); 4467 clear_pending (EV_A_ (W)w);
3490 if (expect_false (!ev_is_active (w))) 4468 if (expect_false (!ev_is_active (w)))
3491 return; 4469 return;
3492 4470
… …
3505} 4483}
3506#endif 4484#endif
3507 4485
3508#if EV_CHECK_ENABLE 4486#if EV_CHECK_ENABLE
3509void 4487void
3510ev_check_start (EV_P_ ev_check *w) 4488ev_check_start (EV_P_ ev_check *w) EV_THROW
3511{ 4489{
3512 if (expect_false (ev_is_active (w))) 4490 if (expect_false (ev_is_active (w)))
3513 return; 4491 return;
3514 4492
3515 EV_FREQUENT_CHECK; 4493 EV_FREQUENT_CHECK;
… …
3520 4498
3521 EV_FREQUENT_CHECK; 4499 EV_FREQUENT_CHECK;
3522} 4500}
3523 4501
3524void 4502void
3525ev_check_stop (EV_P_ ev_check *w) 4503ev_check_stop (EV_P_ ev_check *w) EV_THROW
3526{ 4504{
3527 clear_pending (EV_A_ (W)w); 4505 clear_pending (EV_A_ (W)w);
3528 if (expect_false (!ev_is_active (w))) 4506 if (expect_false (!ev_is_active (w)))
3529 return; 4507 return;
3530 4508
… …
3543} 4521}
3544#endif 4522#endif
3545 4523
3546#if EV_EMBED_ENABLE 4524#if EV_EMBED_ENABLE
3547void noinline 4525void noinline
3548ev_embed_sweep (EV_P_ ev_embed *w) 4526ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
3549{ 4527{
3550 ev_run (w->other, EVRUN_NOWAIT); 4528 ev_run (w->other, EVRUN_NOWAIT);
3551} 4529}
3552 4530
3553static void 4531static void
… …
3601 ev_idle_stop (EV_A_ idle); 4579 ev_idle_stop (EV_A_ idle);
3602} 4580}
3603#endif 4581#endif
3604 4582
3605void 4583void
3606ev_embed_start (EV_P_ ev_embed *w) 4584ev_embed_start (EV_P_ ev_embed *w) EV_THROW
3607{ 4585{
3608 if (expect_false (ev_is_active (w))) 4586 if (expect_false (ev_is_active (w)))
3609 return; 4587 return;
3610 4588
3611 { 4589 {
… …
3632 4610
3633 EV_FREQUENT_CHECK; 4611 EV_FREQUENT_CHECK;
3634} 4612}
3635 4613
3636void 4614void
3637ev_embed_stop (EV_P_ ev_embed *w) 4615ev_embed_stop (EV_P_ ev_embed *w) EV_THROW
3638{ 4616{
3639 clear_pending (EV_A_ (W)w); 4617 clear_pending (EV_A_ (W)w);
3640 if (expect_false (!ev_is_active (w))) 4618 if (expect_false (!ev_is_active (w)))
3641 return; 4619 return;
3642 4620
… …
3652} 4630}
3653#endif 4631#endif
3654 4632
3655#if EV_FORK_ENABLE 4633#if EV_FORK_ENABLE
3656void 4634void
3657ev_fork_start (EV_P_ ev_fork *w) 4635ev_fork_start (EV_P_ ev_fork *w) EV_THROW
3658{ 4636{
3659 if (expect_false (ev_is_active (w))) 4637 if (expect_false (ev_is_active (w)))
3660 return; 4638 return;
3661 4639
3662 EV_FREQUENT_CHECK; 4640 EV_FREQUENT_CHECK;
… …
3667 4645
3668 EV_FREQUENT_CHECK; 4646 EV_FREQUENT_CHECK;
3669} 4647}
3670 4648
3671void 4649void
3672ev_fork_stop (EV_P_ ev_fork *w) 4650ev_fork_stop (EV_P_ ev_fork *w) EV_THROW
3673{ 4651{
3674 clear_pending (EV_A_ (W)w); 4652 clear_pending (EV_A_ (W)w);
3675 if (expect_false (!ev_is_active (w))) 4653 if (expect_false (!ev_is_active (w)))
3676 return; 4654 return;
3677 4655
… …
3690} 4668}
3691#endif 4669#endif
3692 4670
3693#if EV_CLEANUP_ENABLE 4671#if EV_CLEANUP_ENABLE
3694void 4672void
3695ev_cleanup_start (EV_P_ ev_cleanup *w) 4673ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW
3696{ 4674{
3697 if (expect_false (ev_is_active (w))) 4675 if (expect_false (ev_is_active (w)))
3698 return; 4676 return;
3699 4677
3700 EV_FREQUENT_CHECK; 4678 EV_FREQUENT_CHECK;
… …
3707 ev_unref (EV_A); 4685 ev_unref (EV_A);
3708 EV_FREQUENT_CHECK; 4686 EV_FREQUENT_CHECK;
3709} 4687}
3710 4688
3711void 4689void
3712ev_cleanup_stop (EV_P_ ev_cleanup *w) 4690ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW
3713{ 4691{
3714 clear_pending (EV_A_ (W)w); 4692 clear_pending (EV_A_ (W)w);
3715 if (expect_false (!ev_is_active (w))) 4693 if (expect_false (!ev_is_active (w)))
3716 return; 4694 return;
3717 4695
… …
3731} 4709}
3732#endif 4710#endif
3733 4711
3734#if EV_ASYNC_ENABLE 4712#if EV_ASYNC_ENABLE
3735void 4713void
3736ev_async_start (EV_P_ ev_async *w) 4714ev_async_start (EV_P_ ev_async *w) EV_THROW
3737{ 4715{
3738 if (expect_false (ev_is_active (w))) 4716 if (expect_false (ev_is_active (w)))
3739 return; 4717 return;
3740 4718
3741 w->sent = 0; 4719 w->sent = 0;
… …
3750 4728
3751 EV_FREQUENT_CHECK; 4729 EV_FREQUENT_CHECK;
3752} 4730}
3753 4731
3754void 4732void
3755ev_async_stop (EV_P_ ev_async *w) 4733ev_async_stop (EV_P_ ev_async *w) EV_THROW
3756{ 4734{
3757 clear_pending (EV_A_ (W)w); 4735 clear_pending (EV_A_ (W)w);
3758 if (expect_false (!ev_is_active (w))) 4736 if (expect_false (!ev_is_active (w)))
3759 return; 4737 return;
3760 4738
… …
3771 4749
3772 EV_FREQUENT_CHECK; 4750 EV_FREQUENT_CHECK;
3773} 4751}
3774 4752
3775void 4753void
3776ev_async_send (EV_P_ ev_async *w) 4754ev_async_send (EV_P_ ev_async *w) EV_THROW
3777{ 4755{
3778 w->sent = 1; 4756 w->sent = 1;
3779 evpipe_write (EV_A_ &async_pending); 4757 evpipe_write (EV_A_ &async_pending);
3780} 4758}
3781#endif 4759#endif
… …
3818 4796
3819 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 4797 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3820} 4798}
3821 4799
3822void 4800void
3823ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 4801ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW
3824{ 4802{
3825 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4803 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3826 4804
3827 if (expect_false (!once)) 4805 if (expect_false (!once))
3828 { 4806 {
… …
3849} 4827}
3850 4828
3851/*****************************************************************************/ 4829/*****************************************************************************/
3852 4830
3853#if EV_WALK_ENABLE 4831#if EV_WALK_ENABLE
3854void 4832void ecb_cold
3855ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 4833ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW
3856{ 4834{
3857 int i, j; 4835 int i, j;
3858 ev_watcher_list *wl, *wn; 4836 ev_watcher_list *wl, *wn;
3859 4837
3860 if (types & (EV_IO | EV_EMBED)) 4838 if (types & (EV_IO | EV_EMBED))
… …
3903 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 4881 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3904#endif 4882#endif
3905 4883
3906#if EV_IDLE_ENABLE 4884#if EV_IDLE_ENABLE
3907 if (types & EV_IDLE) 4885 if (types & EV_IDLE)
3908 for (j = NUMPRI; i--; ) 4886 for (j = NUMPRI; j--; )
3909 for (i = idlecnt [j]; i--; ) 4887 for (i = idlecnt [j]; i--; )
3910 cb (EV_A_ EV_IDLE, idles [j][i]); 4888 cb (EV_A_ EV_IDLE, idles [j][i]);
3911#endif 4889#endif
3912 4890
3913#if EV_FORK_ENABLE 4891#if EV_FORK_ENABLE
… …
3966 4944
3967#if EV_MULTIPLICITY 4945#if EV_MULTIPLICITY
3968 #include "ev_wrap.h" 4946 #include "ev_wrap.h"
3969#endif 4947#endif
3970 4948
3971EV_CPP(})
3972

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