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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 1.477 by root, Sun Aug 9 00:13:28 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/* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/compiler_ref/compiler_builtins.html */
648#if __xlC__ && ECB_CPP
649 #include <builtins.h>
650#endif
651
652#ifndef ECB_MEMORY_FENCE
653 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
654 #if __i386 || __i386__
655 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
656 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
657 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
658 #elif ECB_GCC_AMD64
659 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
660 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
661 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
662 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
663 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
664 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
665 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__
666 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
667 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
668 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__
669 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
670 #elif __aarch64__
671 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
672 #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8)
673 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
674 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
675 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
676 #elif defined __s390__ || defined __s390x__
677 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
678 #elif defined __mips__
679 /* GNU/Linux emulates sync on mips1 architectures, so we force its use */
680 /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
681 #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
682 #elif defined __alpha__
683 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
684 #elif defined __hppa__
685 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
686 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
687 #elif defined __ia64__
688 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
689 #elif defined __m68k__
690 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
691 #elif defined __m88k__
692 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
693 #elif defined __sh__
694 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
695 #endif
696 #endif
697#endif
698
699#ifndef ECB_MEMORY_FENCE
700 #if ECB_GCC_VERSION(4,7)
701 /* see comment below (stdatomic.h) about the C11 memory model. */
702 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
703 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
704 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
705
706 #elif ECB_CLANG_EXTENSION(c_atomic)
707 /* see comment below (stdatomic.h) about the C11 memory model. */
708 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
709 #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
710 #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
711
712 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
713 #define ECB_MEMORY_FENCE __sync_synchronize ()
714 #elif _MSC_VER >= 1500 /* VC++ 2008 */
715 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
716 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
717 #define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier()
718 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */
719 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier()
720 #elif _MSC_VER >= 1400 /* VC++ 2005 */
721 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
722 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
723 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
724 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
725 #elif defined _WIN32
726 #include <WinNT.h>
727 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
728 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
729 #include <mbarrier.h>
730 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
731 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
732 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
733 #elif __xlC__
734 #define ECB_MEMORY_FENCE __sync ()
735 #endif
736#endif
737
738#ifndef ECB_MEMORY_FENCE
739 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
740 /* we assume that these memory fences work on all variables/all memory accesses, */
741 /* not just C11 atomics and atomic accesses */
742 #include <stdatomic.h>
743 /* Unfortunately, neither gcc 4.7 nor clang 3.1 generate any instructions for */
744 /* any fence other than seq_cst, which isn't very efficient for us. */
745 /* Why that is, we don't know - either the C11 memory model is quite useless */
746 /* for most usages, or gcc and clang have a bug */
747 /* I *currently* lean towards the latter, and inefficiently implement */
748 /* all three of ecb's fences as a seq_cst fence */
749 /* Update, gcc-4.8 generates mfence for all c++ fences, but nothing */
750 /* for all __atomic_thread_fence's except seq_cst */
751 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
752 #endif
753#endif
754
755#ifndef ECB_MEMORY_FENCE
756 #if !ECB_AVOID_PTHREADS
757 /*
758 * if you get undefined symbol references to pthread_mutex_lock,
759 * or failure to find pthread.h, then you should implement
760 * the ECB_MEMORY_FENCE operations for your cpu/compiler
761 * OR provide pthread.h and link against the posix thread library
762 * of your system.
763 */
764 #include <pthread.h>
765 #define ECB_NEEDS_PTHREADS 1
766 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
767
768 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
769 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
770 #endif
771#endif
772
773#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
774 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
775#endif
776
777#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
778 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
779#endif
780
781/*****************************************************************************/
782
783#if ECB_CPP
784 #define ecb_inline static inline
785#elif ECB_GCC_VERSION(2,5)
786 #define ecb_inline static __inline__
787#elif ECB_C99
788 #define ecb_inline static inline
789#else
790 #define ecb_inline static
791#endif
792
793#if ECB_GCC_VERSION(3,3)
794 #define ecb_restrict __restrict__
795#elif ECB_C99
796 #define ecb_restrict restrict
797#else
798 #define ecb_restrict
799#endif
800
801typedef int ecb_bool;
802
803#define ECB_CONCAT_(a, b) a ## b
804#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
805#define ECB_STRINGIFY_(a) # a
806#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
807#define ECB_STRINGIFY_EXPR(expr) ((expr), ECB_STRINGIFY_ (expr))
808
809#define ecb_function_ ecb_inline
810
811#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
812 #define ecb_attribute(attrlist) __attribute__ (attrlist)
813#else
814 #define ecb_attribute(attrlist)
815#endif
816
817#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_constant_p)
818 #define ecb_is_constant(expr) __builtin_constant_p (expr)
819#else
820 /* possible C11 impl for integral types
821 typedef struct ecb_is_constant_struct ecb_is_constant_struct;
822 #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */
823
824 #define ecb_is_constant(expr) 0
825#endif
826
827#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_expect)
828 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
829#else
830 #define ecb_expect(expr,value) (expr)
831#endif
832
833#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_prefetch)
834 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
835#else
836 #define ecb_prefetch(addr,rw,locality)
837#endif
838
839/* no emulation for ecb_decltype */
840#if ECB_CPP11
841 // older implementations might have problems with decltype(x)::type, work around it
842 template<class T> struct ecb_decltype_t { typedef T type; };
843 #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
844#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
845 #define ecb_decltype(x) __typeof__ (x)
846#endif
847
848#if _MSC_VER >= 1300
849 #define ecb_deprecated __declspec (deprecated)
850#else
851 #define ecb_deprecated ecb_attribute ((__deprecated__))
852#endif
853
854#if _MSC_VER >= 1500
855 #define ecb_deprecated_message(msg) __declspec (deprecated (msg))
856#elif ECB_GCC_VERSION(4,5)
857 #define ecb_deprecated_message(msg) ecb_attribute ((__deprecated__ (msg))
858#else
859 #define ecb_deprecated_message(msg) ecb_deprecated
860#endif
861
862#if _MSC_VER >= 1400
863 #define ecb_noinline __declspec (noinline)
864#else
865 #define ecb_noinline ecb_attribute ((__noinline__))
866#endif
867
868#define ecb_unused ecb_attribute ((__unused__))
869#define ecb_const ecb_attribute ((__const__))
870#define ecb_pure ecb_attribute ((__pure__))
871
872#if ECB_C11 || __IBMC_NORETURN
873 /* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/language_ref/noreturn.html */
874 #define ecb_noreturn _Noreturn
875#elif ECB_CPP11
876 #define ecb_noreturn [[noreturn]]
877#elif _MSC_VER >= 1200
878 /* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx */
879 #define ecb_noreturn __declspec (noreturn)
880#else
881 #define ecb_noreturn ecb_attribute ((__noreturn__))
882#endif
883
884#if ECB_GCC_VERSION(4,3)
885 #define ecb_artificial ecb_attribute ((__artificial__))
886 #define ecb_hot ecb_attribute ((__hot__))
887 #define ecb_cold ecb_attribute ((__cold__))
888#else
889 #define ecb_artificial
890 #define ecb_hot
891 #define ecb_cold
892#endif
893
894/* put around conditional expressions if you are very sure that the */
895/* expression is mostly true or mostly false. note that these return */
896/* booleans, not the expression. */
480#define expect_false(expr) expect ((expr) != 0, 0) 897#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
481#define expect_true(expr) expect ((expr) != 0, 1) 898#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
899/* for compatibility to the rest of the world */
900#define ecb_likely(expr) ecb_expect_true (expr)
901#define ecb_unlikely(expr) ecb_expect_false (expr)
902
903/* count trailing zero bits and count # of one bits */
904#if ECB_GCC_VERSION(3,4) \
905 || (ECB_CLANG_BUILTIN(__builtin_clz) && ECB_CLANG_BUILTIN(__builtin_clzll) \
906 && ECB_CLANG_BUILTIN(__builtin_ctz) && ECB_CLANG_BUILTIN(__builtin_ctzll) \
907 && ECB_CLANG_BUILTIN(__builtin_popcount))
908 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
909 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
910 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
911 #define ecb_ctz32(x) __builtin_ctz (x)
912 #define ecb_ctz64(x) __builtin_ctzll (x)
913 #define ecb_popcount32(x) __builtin_popcount (x)
914 /* no popcountll */
915#else
916 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
917 ecb_function_ ecb_const int
918 ecb_ctz32 (uint32_t x)
919 {
920 int r = 0;
921
922 x &= ~x + 1; /* this isolates the lowest bit */
923
924#if ECB_branchless_on_i386
925 r += !!(x & 0xaaaaaaaa) << 0;
926 r += !!(x & 0xcccccccc) << 1;
927 r += !!(x & 0xf0f0f0f0) << 2;
928 r += !!(x & 0xff00ff00) << 3;
929 r += !!(x & 0xffff0000) << 4;
930#else
931 if (x & 0xaaaaaaaa) r += 1;
932 if (x & 0xcccccccc) r += 2;
933 if (x & 0xf0f0f0f0) r += 4;
934 if (x & 0xff00ff00) r += 8;
935 if (x & 0xffff0000) r += 16;
936#endif
937
938 return r;
939 }
940
941 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
942 ecb_function_ ecb_const int
943 ecb_ctz64 (uint64_t x)
944 {
945 int shift = x & 0xffffffffU ? 0 : 32;
946 return ecb_ctz32 (x >> shift) + shift;
947 }
948
949 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
950 ecb_function_ ecb_const int
951 ecb_popcount32 (uint32_t x)
952 {
953 x -= (x >> 1) & 0x55555555;
954 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
955 x = ((x >> 4) + x) & 0x0f0f0f0f;
956 x *= 0x01010101;
957
958 return x >> 24;
959 }
960
961 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
962 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
963 {
964 int r = 0;
965
966 if (x >> 16) { x >>= 16; r += 16; }
967 if (x >> 8) { x >>= 8; r += 8; }
968 if (x >> 4) { x >>= 4; r += 4; }
969 if (x >> 2) { x >>= 2; r += 2; }
970 if (x >> 1) { r += 1; }
971
972 return r;
973 }
974
975 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
976 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
977 {
978 int r = 0;
979
980 if (x >> 32) { x >>= 32; r += 32; }
981
982 return r + ecb_ld32 (x);
983 }
984#endif
985
986ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x);
987ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
988ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x);
989ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
990
991ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
992ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
993{
994 return ( (x * 0x0802U & 0x22110U)
995 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
996}
997
998ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
999ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
1000{
1001 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
1002 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
1003 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
1004 x = ( x >> 8 ) | ( x << 8);
1005
1006 return x;
1007}
1008
1009ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
1010ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
1011{
1012 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
1013 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
1014 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
1015 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
1016 x = ( x >> 16 ) | ( x << 16);
1017
1018 return x;
1019}
1020
1021/* popcount64 is only available on 64 bit cpus as gcc builtin */
1022/* so for this version we are lazy */
1023ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
1024ecb_function_ ecb_const int
1025ecb_popcount64 (uint64_t x)
1026{
1027 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
1028}
1029
1030ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count);
1031ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count);
1032ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count);
1033ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count);
1034ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count);
1035ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count);
1036ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count);
1037ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count);
1038
1039ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
1040ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
1041ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
1042ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
1043ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
1044ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
1045ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
1046ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
1047
1048#if ECB_GCC_VERSION(4,3) || (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64))
1049 #if ECB_GCC_VERSION(4,8) || ECB_CLANG_BUILTIN(__builtin_bswap16)
1050 #define ecb_bswap16(x) __builtin_bswap16 (x)
1051 #else
1052 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
1053 #endif
1054 #define ecb_bswap32(x) __builtin_bswap32 (x)
1055 #define ecb_bswap64(x) __builtin_bswap64 (x)
1056#elif _MSC_VER
1057 #include <stdlib.h>
1058 #define ecb_bswap16(x) ((uint16_t)_byteswap_ushort ((uint16_t)(x)))
1059 #define ecb_bswap32(x) ((uint32_t)_byteswap_ulong ((uint32_t)(x)))
1060 #define ecb_bswap64(x) ((uint64_t)_byteswap_uint64 ((uint64_t)(x)))
1061#else
1062 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
1063 ecb_function_ ecb_const uint16_t
1064 ecb_bswap16 (uint16_t x)
1065 {
1066 return ecb_rotl16 (x, 8);
1067 }
1068
1069 ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
1070 ecb_function_ ecb_const uint32_t
1071 ecb_bswap32 (uint32_t x)
1072 {
1073 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
1074 }
1075
1076 ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
1077 ecb_function_ ecb_const uint64_t
1078 ecb_bswap64 (uint64_t x)
1079 {
1080 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
1081 }
1082#endif
1083
1084#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
1085 #define ecb_unreachable() __builtin_unreachable ()
1086#else
1087 /* this seems to work fine, but gcc always emits a warning for it :/ */
1088 ecb_inline ecb_noreturn void ecb_unreachable (void);
1089 ecb_inline ecb_noreturn void ecb_unreachable (void) { }
1090#endif
1091
1092/* try to tell the compiler that some condition is definitely true */
1093#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
1094
1095ecb_inline ecb_const unsigned char ecb_byteorder_helper (void);
1096ecb_inline ecb_const unsigned char
1097ecb_byteorder_helper (void)
1098{
1099 /* the union code still generates code under pressure in gcc, */
1100 /* but less than using pointers, and always seems to */
1101 /* successfully return a constant. */
1102 /* the reason why we have this horrible preprocessor mess */
1103 /* is to avoid it in all cases, at least on common architectures */
1104 /* or when using a recent enough gcc version (>= 4.6) */
1105#if ((__i386 || __i386__) && !__VOS__) || _M_IX86 || ECB_GCC_AMD64 || ECB_MSVC_AMD64
1106 return 0x44;
1107#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
1108 return 0x44;
1109#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
1110 return 0x11;
1111#else
1112 union
1113 {
1114 uint32_t i;
1115 uint8_t c;
1116 } u = { 0x11223344 };
1117 return u.c;
1118#endif
1119}
1120
1121ecb_inline ecb_const ecb_bool ecb_big_endian (void);
1122ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
1123ecb_inline ecb_const ecb_bool ecb_little_endian (void);
1124ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }
1125
1126#if ECB_GCC_VERSION(3,0) || ECB_C99
1127 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
1128#else
1129 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
1130#endif
1131
1132#if ECB_CPP
1133 template<typename T>
1134 static inline T ecb_div_rd (T val, T div)
1135 {
1136 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
1137 }
1138 template<typename T>
1139 static inline T ecb_div_ru (T val, T div)
1140 {
1141 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
1142 }
1143#else
1144 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
1145 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
1146#endif
1147
1148#if ecb_cplusplus_does_not_suck
1149 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
1150 template<typename T, int N>
1151 static inline int ecb_array_length (const T (&arr)[N])
1152 {
1153 return N;
1154 }
1155#else
1156 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
1157#endif
1158
1159/*******************************************************************************/
1160/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1161
1162/* basically, everything uses "ieee pure-endian" floating point numbers */
1163/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1164#if 0 \
1165 || __i386 || __i386__ \
1166 || ECB_GCC_AMD64 \
1167 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1168 || defined __s390__ || defined __s390x__ \
1169 || defined __mips__ \
1170 || defined __alpha__ \
1171 || defined __hppa__ \
1172 || defined __ia64__ \
1173 || defined __m68k__ \
1174 || defined __m88k__ \
1175 || defined __sh__ \
1176 || defined _M_IX86 || defined ECB_MSVC_AMD64 || defined _M_IA64 \
1177 || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \
1178 || defined __aarch64__
1179 #define ECB_STDFP 1
1180 #include <string.h> /* for memcpy */
1181#else
1182 #define ECB_STDFP 0
1183#endif
1184
1185#ifndef ECB_NO_LIBM
1186
1187 #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */
1188
1189 /* only the oldest of old doesn't have this one. solaris. */
1190 #ifdef INFINITY
1191 #define ECB_INFINITY INFINITY
1192 #else
1193 #define ECB_INFINITY HUGE_VAL
1194 #endif
1195
1196 #ifdef NAN
1197 #define ECB_NAN NAN
1198 #else
1199 #define ECB_NAN ECB_INFINITY
1200 #endif
1201
1202 #if ECB_C99 || _XOPEN_VERSION >= 600 || _POSIX_VERSION >= 200112L
1203 #define ecb_ldexpf(x,e) ldexpf ((x), (e))
1204 #define ecb_frexpf(x,e) frexpf ((x), (e))
1205 #else
1206 #define ecb_ldexpf(x,e) (float) ldexp ((double) (x), (e))
1207 #define ecb_frexpf(x,e) (float) frexp ((double) (x), (e))
1208 #endif
1209
1210 /* converts an ieee half/binary16 to a float */
1211 ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x);
1212 ecb_function_ ecb_const float
1213 ecb_binary16_to_float (uint16_t x)
1214 {
1215 int e = (x >> 10) & 0x1f;
1216 int m = x & 0x3ff;
1217 float r;
1218
1219 if (!e ) r = ecb_ldexpf (m , -24);
1220 else if (e != 31) r = ecb_ldexpf (m + 0x400, e - 25);
1221 else if (m ) r = ECB_NAN;
1222 else r = ECB_INFINITY;
1223
1224 return x & 0x8000 ? -r : r;
1225 }
1226
1227 /* convert a float to ieee single/binary32 */
1228 ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x);
1229 ecb_function_ ecb_const uint32_t
1230 ecb_float_to_binary32 (float x)
1231 {
1232 uint32_t r;
1233
1234 #if ECB_STDFP
1235 memcpy (&r, &x, 4);
1236 #else
1237 /* slow emulation, works for anything but -0 */
1238 uint32_t m;
1239 int e;
1240
1241 if (x == 0e0f ) return 0x00000000U;
1242 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1243 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1244 if (x != x ) return 0x7fbfffffU;
1245
1246 m = ecb_frexpf (x, &e) * 0x1000000U;
1247
1248 r = m & 0x80000000U;
1249
1250 if (r)
1251 m = -m;
1252
1253 if (e <= -126)
1254 {
1255 m &= 0xffffffU;
1256 m >>= (-125 - e);
1257 e = -126;
1258 }
1259
1260 r |= (e + 126) << 23;
1261 r |= m & 0x7fffffU;
1262 #endif
1263
1264 return r;
1265 }
1266
1267 /* converts an ieee single/binary32 to a float */
1268 ecb_function_ ecb_const float ecb_binary32_to_float (uint32_t x);
1269 ecb_function_ ecb_const float
1270 ecb_binary32_to_float (uint32_t x)
1271 {
1272 float r;
1273
1274 #if ECB_STDFP
1275 memcpy (&r, &x, 4);
1276 #else
1277 /* emulation, only works for normals and subnormals and +0 */
1278 int neg = x >> 31;
1279 int e = (x >> 23) & 0xffU;
1280
1281 x &= 0x7fffffU;
1282
1283 if (e)
1284 x |= 0x800000U;
1285 else
1286 e = 1;
1287
1288 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1289 r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126);
1290
1291 r = neg ? -r : r;
1292 #endif
1293
1294 return r;
1295 }
1296
1297 /* convert a double to ieee double/binary64 */
1298 ecb_function_ ecb_const uint64_t ecb_double_to_binary64 (double x);
1299 ecb_function_ ecb_const uint64_t
1300 ecb_double_to_binary64 (double x)
1301 {
1302 uint64_t r;
1303
1304 #if ECB_STDFP
1305 memcpy (&r, &x, 8);
1306 #else
1307 /* slow emulation, works for anything but -0 */
1308 uint64_t m;
1309 int e;
1310
1311 if (x == 0e0 ) return 0x0000000000000000U;
1312 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1313 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1314 if (x != x ) return 0X7ff7ffffffffffffU;
1315
1316 m = frexp (x, &e) * 0x20000000000000U;
1317
1318 r = m & 0x8000000000000000;;
1319
1320 if (r)
1321 m = -m;
1322
1323 if (e <= -1022)
1324 {
1325 m &= 0x1fffffffffffffU;
1326 m >>= (-1021 - e);
1327 e = -1022;
1328 }
1329
1330 r |= ((uint64_t)(e + 1022)) << 52;
1331 r |= m & 0xfffffffffffffU;
1332 #endif
1333
1334 return r;
1335 }
1336
1337 /* converts an ieee double/binary64 to a double */
1338 ecb_function_ ecb_const double ecb_binary64_to_double (uint64_t x);
1339 ecb_function_ ecb_const double
1340 ecb_binary64_to_double (uint64_t x)
1341 {
1342 double r;
1343
1344 #if ECB_STDFP
1345 memcpy (&r, &x, 8);
1346 #else
1347 /* emulation, only works for normals and subnormals and +0 */
1348 int neg = x >> 63;
1349 int e = (x >> 52) & 0x7ffU;
1350
1351 x &= 0xfffffffffffffU;
1352
1353 if (e)
1354 x |= 0x10000000000000U;
1355 else
1356 e = 1;
1357
1358 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1359 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1360
1361 r = neg ? -r : r;
1362 #endif
1363
1364 return r;
1365 }
1366
1367#endif
1368
1369#endif
1370
1371/* ECB.H END */
1372
1373#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
1374/* if your architecture doesn't need memory fences, e.g. because it is
1375 * single-cpu/core, or if you use libev in a project that doesn't use libev
1376 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
1377 * libev, in which cases the memory fences become nops.
1378 * alternatively, you can remove this #error and link against libpthread,
1379 * which will then provide the memory fences.
1380 */
1381# error "memory fences not defined for your architecture, please report"
1382#endif
1383
1384#ifndef ECB_MEMORY_FENCE
1385# define ECB_MEMORY_FENCE do { } while (0)
1386# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1387# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1388#endif
1389
1390#define expect_false(cond) ecb_expect_false (cond)
1391#define expect_true(cond) ecb_expect_true (cond)
1392#define noinline ecb_noinline
1393
482#define inline_size static inline 1394#define inline_size ecb_inline
483 1395
484#if EV_FEATURE_CODE 1396#if EV_FEATURE_CODE
485# define inline_speed static inline 1397# define inline_speed ecb_inline
486#else 1398#else
487# define inline_speed static noinline 1399# define inline_speed static noinline
488#endif 1400#endif
489 1401
490#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1402#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
… …
581 1493
582#ifdef __linux 1494#ifdef __linux
583# include <sys/utsname.h> 1495# include <sys/utsname.h>
584#endif 1496#endif
585 1497
586static unsigned int noinline 1498static unsigned int noinline ecb_cold
587ev_linux_version (void) 1499ev_linux_version (void)
588{ 1500{
589#ifdef __linux 1501#ifdef __linux
590 unsigned int v = 0; 1502 unsigned int v = 0;
591 struct utsname buf; 1503 struct utsname buf;
… …
620} 1532}
621 1533
622/*****************************************************************************/ 1534/*****************************************************************************/
623 1535
624#if EV_AVOID_STDIO 1536#if EV_AVOID_STDIO
625static void noinline 1537static void noinline ecb_cold
626ev_printerr (const char *msg) 1538ev_printerr (const char *msg)
627{ 1539{
628 write (STDERR_FILENO, msg, strlen (msg)); 1540 write (STDERR_FILENO, msg, strlen (msg));
629} 1541}
630#endif 1542#endif
631 1543
632static void (*syserr_cb)(const char *msg); 1544static void (*syserr_cb)(const char *msg) EV_THROW;
633 1545
634void 1546void ecb_cold
635ev_set_syserr_cb (void (*cb)(const char *msg)) 1547ev_set_syserr_cb (void (*cb)(const char *msg) EV_THROW) EV_THROW
636{ 1548{
637 syserr_cb = cb; 1549 syserr_cb = cb;
638} 1550}
639 1551
640static void noinline 1552static void noinline ecb_cold
641ev_syserr (const char *msg) 1553ev_syserr (const char *msg)
642{ 1554{
643 if (!msg) 1555 if (!msg)
644 msg = "(libev) system error"; 1556 msg = "(libev) system error";
645 1557
… …
658 abort (); 1570 abort ();
659 } 1571 }
660} 1572}
661 1573
662static void * 1574static void *
663ev_realloc_emul (void *ptr, long size) 1575ev_realloc_emul (void *ptr, long size) EV_THROW
664{ 1576{
665#if __GLIBC__
666 return realloc (ptr, size);
667#else
668 /* some systems, notably openbsd and darwin, fail to properly 1577 /* some systems, notably openbsd and darwin, fail to properly
669 * implement realloc (x, 0) (as required by both ansi c-89 and 1578 * implement realloc (x, 0) (as required by both ansi c-89 and
670 * the single unix specification, so work around them here. 1579 * the single unix specification, so work around them here.
1580 * recently, also (at least) fedora and debian started breaking it,
1581 * despite documenting it otherwise.
671 */ 1582 */
672 1583
673 if (size) 1584 if (size)
674 return realloc (ptr, size); 1585 return realloc (ptr, size);
675 1586
676 free (ptr); 1587 free (ptr);
677 return 0; 1588 return 0;
678#endif
679} 1589}
680 1590
681static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1591static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;
682 1592
683void 1593void ecb_cold
684ev_set_allocator (void *(*cb)(void *ptr, long size)) 1594ev_set_allocator (void *(*cb)(void *ptr, long size) EV_THROW) EV_THROW
685{ 1595{
686 alloc = cb; 1596 alloc = cb;
687} 1597}
688 1598
689inline_speed void * 1599inline_speed void *
… …
777 #undef VAR 1687 #undef VAR
778 }; 1688 };
779 #include "ev_wrap.h" 1689 #include "ev_wrap.h"
780 1690
781 static struct ev_loop default_loop_struct; 1691 static struct ev_loop default_loop_struct;
782 struct ev_loop *ev_default_loop_ptr; 1692 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
783 1693
784#else 1694#else
785 1695
786 ev_tstamp ev_rt_now; 1696 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; 1697 #define VAR(name,decl) static decl;
788 #include "ev_vars.h" 1698 #include "ev_vars.h"
789 #undef VAR 1699 #undef VAR
790 1700
791 static int ev_default_loop_ptr; 1701 static int ev_default_loop_ptr;
… …
806 1716
807/*****************************************************************************/ 1717/*****************************************************************************/
808 1718
809#ifndef EV_HAVE_EV_TIME 1719#ifndef EV_HAVE_EV_TIME
810ev_tstamp 1720ev_tstamp
811ev_time (void) 1721ev_time (void) EV_THROW
812{ 1722{
813#if EV_USE_REALTIME 1723#if EV_USE_REALTIME
814 if (expect_true (have_realtime)) 1724 if (expect_true (have_realtime))
815 { 1725 {
816 struct timespec ts; 1726 struct timespec ts;
… …
840 return ev_time (); 1750 return ev_time ();
841} 1751}
842 1752
843#if EV_MULTIPLICITY 1753#if EV_MULTIPLICITY
844ev_tstamp 1754ev_tstamp
845ev_now (EV_P) 1755ev_now (EV_P) EV_THROW
846{ 1756{
847 return ev_rt_now; 1757 return ev_rt_now;
848} 1758}
849#endif 1759#endif
850 1760
851void 1761void
852ev_sleep (ev_tstamp delay) 1762ev_sleep (ev_tstamp delay) EV_THROW
853{ 1763{
854 if (delay > 0.) 1764 if (delay > 0.)
855 { 1765 {
856#if EV_USE_NANOSLEEP 1766#if EV_USE_NANOSLEEP
857 struct timespec ts; 1767 struct timespec ts;
858 1768
859 EV_TS_SET (ts, delay); 1769 EV_TS_SET (ts, delay);
860 nanosleep (&ts, 0); 1770 nanosleep (&ts, 0);
861#elif defined(_WIN32) 1771#elif defined _WIN32
862 Sleep ((unsigned long)(delay * 1e3)); 1772 Sleep ((unsigned long)(delay * 1e3));
863#else 1773#else
864 struct timeval tv; 1774 struct timeval tv;
865 1775
866 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1776 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
… …
870 select (0, 0, 0, 0, &tv); 1780 select (0, 0, 0, 0, &tv);
871#endif 1781#endif
872 } 1782 }
873} 1783}
874 1784
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/*****************************************************************************/ 1785/*****************************************************************************/
884 1786
885#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 1787#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
886 1788
887/* find a suitable new size for the given array, */ 1789/* find a suitable new size for the given array, */
… …
893 1795
894 do 1796 do
895 ncur <<= 1; 1797 ncur <<= 1;
896 while (cnt > ncur); 1798 while (cnt > ncur);
897 1799
898 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1800 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
899 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1801 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
900 { 1802 {
901 ncur *= elem; 1803 ncur *= elem;
902 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1804 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
903 ncur = ncur - sizeof (void *) * 4; 1805 ncur = ncur - sizeof (void *) * 4;
… …
905 } 1807 }
906 1808
907 return ncur; 1809 return ncur;
908} 1810}
909 1811
910static noinline void * 1812static void * noinline ecb_cold
911array_realloc (int elem, void *base, int *cur, int cnt) 1813array_realloc (int elem, void *base, int *cur, int cnt)
912{ 1814{
913 *cur = array_nextsize (elem, *cur, cnt); 1815 *cur = array_nextsize (elem, *cur, cnt);
914 return ev_realloc (base, elem * *cur); 1816 return ev_realloc (base, elem * *cur);
915} 1817}
… …
918 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1820 memset ((void *)(base), 0, sizeof (*(base)) * (count))
919 1821
920#define array_needsize(type,base,cur,cnt,init) \ 1822#define array_needsize(type,base,cur,cnt,init) \
921 if (expect_false ((cnt) > (cur))) \ 1823 if (expect_false ((cnt) > (cur))) \
922 { \ 1824 { \
923 int ocur_ = (cur); \ 1825 int ecb_unused ocur_ = (cur); \
924 (base) = (type *)array_realloc \ 1826 (base) = (type *)array_realloc \
925 (sizeof (type), (base), &(cur), (cnt)); \ 1827 (sizeof (type), (base), &(cur), (cnt)); \
926 init ((base) + (ocur_), (cur) - ocur_); \ 1828 init ((base) + (ocur_), (cur) - ocur_); \
927 } 1829 }
928 1830
… …
946pendingcb (EV_P_ ev_prepare *w, int revents) 1848pendingcb (EV_P_ ev_prepare *w, int revents)
947{ 1849{
948} 1850}
949 1851
950void noinline 1852void noinline
951ev_feed_event (EV_P_ void *w, int revents) 1853ev_feed_event (EV_P_ void *w, int revents) EV_THROW
952{ 1854{
953 W w_ = (W)w; 1855 W w_ = (W)w;
954 int pri = ABSPRI (w_); 1856 int pri = ABSPRI (w_);
955 1857
956 if (expect_false (w_->pending)) 1858 if (expect_false (w_->pending))
… …
960 w_->pending = ++pendingcnt [pri]; 1862 w_->pending = ++pendingcnt [pri];
961 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 1863 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
962 pendings [pri][w_->pending - 1].w = w_; 1864 pendings [pri][w_->pending - 1].w = w_;
963 pendings [pri][w_->pending - 1].events = revents; 1865 pendings [pri][w_->pending - 1].events = revents;
964 } 1866 }
1867
1868 pendingpri = NUMPRI - 1;
965} 1869}
966 1870
967inline_speed void 1871inline_speed void
968feed_reverse (EV_P_ W w) 1872feed_reverse (EV_P_ W w)
969{ 1873{
… …
1015 if (expect_true (!anfd->reify)) 1919 if (expect_true (!anfd->reify))
1016 fd_event_nocheck (EV_A_ fd, revents); 1920 fd_event_nocheck (EV_A_ fd, revents);
1017} 1921}
1018 1922
1019void 1923void
1020ev_feed_fd_event (EV_P_ int fd, int revents) 1924ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW
1021{ 1925{
1022 if (fd >= 0 && fd < anfdmax) 1926 if (fd >= 0 && fd < anfdmax)
1023 fd_event_nocheck (EV_A_ fd, revents); 1927 fd_event_nocheck (EV_A_ fd, revents);
1024} 1928}
1025 1929
… …
1098 fdchanges [fdchangecnt - 1] = fd; 2002 fdchanges [fdchangecnt - 1] = fd;
1099 } 2003 }
1100} 2004}
1101 2005
1102/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 2006/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1103inline_speed void 2007inline_speed void ecb_cold
1104fd_kill (EV_P_ int fd) 2008fd_kill (EV_P_ int fd)
1105{ 2009{
1106 ev_io *w; 2010 ev_io *w;
1107 2011
1108 while ((w = (ev_io *)anfds [fd].head)) 2012 while ((w = (ev_io *)anfds [fd].head))
… …
1111 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 2015 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
1112 } 2016 }
1113} 2017}
1114 2018
1115/* check whether the given fd is actually valid, for error recovery */ 2019/* check whether the given fd is actually valid, for error recovery */
1116inline_size int 2020inline_size int ecb_cold
1117fd_valid (int fd) 2021fd_valid (int fd)
1118{ 2022{
1119#ifdef _WIN32 2023#ifdef _WIN32
1120 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 2024 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1121#else 2025#else
1122 return fcntl (fd, F_GETFD) != -1; 2026 return fcntl (fd, F_GETFD) != -1;
1123#endif 2027#endif
1124} 2028}
1125 2029
1126/* called on EBADF to verify fds */ 2030/* called on EBADF to verify fds */
1127static void noinline 2031static void noinline ecb_cold
1128fd_ebadf (EV_P) 2032fd_ebadf (EV_P)
1129{ 2033{
1130 int fd; 2034 int fd;
1131 2035
1132 for (fd = 0; fd < anfdmax; ++fd) 2036 for (fd = 0; fd < anfdmax; ++fd)
… …
1134 if (!fd_valid (fd) && errno == EBADF) 2038 if (!fd_valid (fd) && errno == EBADF)
1135 fd_kill (EV_A_ fd); 2039 fd_kill (EV_A_ fd);
1136} 2040}
1137 2041
1138/* called on ENOMEM in select/poll to kill some fds and retry */ 2042/* called on ENOMEM in select/poll to kill some fds and retry */
1139static void noinline 2043static void noinline ecb_cold
1140fd_enomem (EV_P) 2044fd_enomem (EV_P)
1141{ 2045{
1142 int fd; 2046 int fd;
1143 2047
1144 for (fd = anfdmax; fd--; ) 2048 for (fd = anfdmax; fd--; )
… …
1339 2243
1340/*****************************************************************************/ 2244/*****************************************************************************/
1341 2245
1342#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2246#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1343 2247
1344static void noinline 2248static void noinline ecb_cold
1345evpipe_init (EV_P) 2249evpipe_init (EV_P)
1346{ 2250{
1347 if (!ev_is_active (&pipe_w)) 2251 if (!ev_is_active (&pipe_w))
1348 { 2252 {
2253 int fds [2];
2254
1349# if EV_USE_EVENTFD 2255# if EV_USE_EVENTFD
2256 fds [0] = -1;
1350 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2257 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1351 if (evfd < 0 && errno == EINVAL) 2258 if (fds [1] < 0 && errno == EINVAL)
1352 evfd = eventfd (0, 0); 2259 fds [1] = eventfd (0, 0);
1353 2260
1354 if (evfd >= 0) 2261 if (fds [1] < 0)
2262# endif
1355 { 2263 {
2264 while (pipe (fds))
2265 ev_syserr ("(libev) error creating signal/async pipe");
2266
2267 fd_intern (fds [0]);
2268 }
2269
1356 evpipe [0] = -1; 2270 evpipe [0] = fds [0];
1357 fd_intern (evfd); /* doing it twice doesn't hurt */ 2271
1358 ev_io_set (&pipe_w, evfd, EV_READ); 2272 if (evpipe [1] < 0)
2273 evpipe [1] = fds [1]; /* first call, set write fd */
2274 else
2275 {
2276 /* on subsequent calls, do not change evpipe [1] */
2277 /* so that evpipe_write can always rely on its value. */
2278 /* this branch does not do anything sensible on windows, */
2279 /* so must not be executed on windows */
2280
2281 dup2 (fds [1], evpipe [1]);
2282 close (fds [1]);
2283 }
2284
2285 fd_intern (evpipe [1]);
2286
2287 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2288 ev_io_start (EV_A_ &pipe_w);
2289 ev_unref (EV_A); /* watcher should not keep loop alive */
2290 }
2291}
2292
2293inline_speed void
2294evpipe_write (EV_P_ EV_ATOMIC_T *flag)
2295{
2296 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
2297
2298 if (expect_true (*flag))
2299 return;
2300
2301 *flag = 1;
2302 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2303
2304 pipe_write_skipped = 1;
2305
2306 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2307
2308 if (pipe_write_wanted)
2309 {
2310 int old_errno;
2311
2312 pipe_write_skipped = 0;
2313 ECB_MEMORY_FENCE_RELEASE;
2314
2315 old_errno = errno; /* save errno because write will clobber it */
2316
2317#if EV_USE_EVENTFD
2318 if (evpipe [0] < 0)
2319 {
2320 uint64_t counter = 1;
2321 write (evpipe [1], &counter, sizeof (uint64_t));
1359 } 2322 }
1360 else 2323 else
1361# endif 2324#endif
1362 { 2325 {
1363 while (pipe (evpipe)) 2326#ifdef _WIN32
1364 ev_syserr ("(libev) error creating signal/async pipe"); 2327 WSABUF buf;
1365 2328 DWORD sent;
1366 fd_intern (evpipe [0]); 2329 buf.buf = &buf;
1367 fd_intern (evpipe [1]); 2330 buf.len = 1;
1368 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2331 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
2332#else
2333 write (evpipe [1], &(evpipe [1]), 1);
2334#endif
1369 } 2335 }
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 2336
1401 errno = old_errno; 2337 errno = old_errno;
1402 } 2338 }
1403} 2339}
1404 2340
… …
1407static void 2343static void
1408pipecb (EV_P_ ev_io *iow, int revents) 2344pipecb (EV_P_ ev_io *iow, int revents)
1409{ 2345{
1410 int i; 2346 int i;
1411 2347
2348 if (revents & EV_READ)
2349 {
1412#if EV_USE_EVENTFD 2350#if EV_USE_EVENTFD
1413 if (evfd >= 0) 2351 if (evpipe [0] < 0)
1414 { 2352 {
1415 uint64_t counter; 2353 uint64_t counter;
1416 read (evfd, &counter, sizeof (uint64_t)); 2354 read (evpipe [1], &counter, sizeof (uint64_t));
1417 } 2355 }
1418 else 2356 else
1419#endif 2357#endif
1420 { 2358 {
1421 char dummy; 2359 char dummy[4];
1422 /* see discussion in evpipe_write when you think this read should be recv in win32 */ 2360#ifdef _WIN32
2361 WSABUF buf;
2362 DWORD recvd;
2363 DWORD flags = 0;
2364 buf.buf = dummy;
2365 buf.len = sizeof (dummy);
2366 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2367#else
1423 read (evpipe [0], &dummy, 1); 2368 read (evpipe [0], &dummy, sizeof (dummy));
2369#endif
2370 }
1424 } 2371 }
2372
2373 pipe_write_skipped = 0;
2374
2375 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
1425 2376
1426#if EV_SIGNAL_ENABLE 2377#if EV_SIGNAL_ENABLE
1427 if (sig_pending) 2378 if (sig_pending)
1428 { 2379 {
1429 sig_pending = 0; 2380 sig_pending = 0;
2381
2382 ECB_MEMORY_FENCE;
1430 2383
1431 for (i = EV_NSIG - 1; i--; ) 2384 for (i = EV_NSIG - 1; i--; )
1432 if (expect_false (signals [i].pending)) 2385 if (expect_false (signals [i].pending))
1433 ev_feed_signal_event (EV_A_ i + 1); 2386 ev_feed_signal_event (EV_A_ i + 1);
1434 } 2387 }
… …
1436 2389
1437#if EV_ASYNC_ENABLE 2390#if EV_ASYNC_ENABLE
1438 if (async_pending) 2391 if (async_pending)
1439 { 2392 {
1440 async_pending = 0; 2393 async_pending = 0;
2394
2395 ECB_MEMORY_FENCE;
1441 2396
1442 for (i = asynccnt; i--; ) 2397 for (i = asynccnt; i--; )
1443 if (asyncs [i]->sent) 2398 if (asyncs [i]->sent)
1444 { 2399 {
1445 asyncs [i]->sent = 0; 2400 asyncs [i]->sent = 0;
2401 ECB_MEMORY_FENCE_RELEASE;
1446 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2402 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1447 } 2403 }
1448 } 2404 }
1449#endif 2405#endif
1450} 2406}
1451 2407
1452/*****************************************************************************/ 2408/*****************************************************************************/
1453 2409
1454void 2410void
1455ev_feed_signal (int signum) 2411ev_feed_signal (int signum) EV_THROW
1456{ 2412{
1457#if EV_MULTIPLICITY 2413#if EV_MULTIPLICITY
2414 EV_P;
2415 ECB_MEMORY_FENCE_ACQUIRE;
1458 EV_P = signals [signum - 1].loop; 2416 EV_A = signals [signum - 1].loop;
1459 2417
1460 if (!EV_A) 2418 if (!EV_A)
1461 return; 2419 return;
1462#endif 2420#endif
1463 2421
… …
1474 2432
1475 ev_feed_signal (signum); 2433 ev_feed_signal (signum);
1476} 2434}
1477 2435
1478void noinline 2436void noinline
1479ev_feed_signal_event (EV_P_ int signum) 2437ev_feed_signal_event (EV_P_ int signum) EV_THROW
1480{ 2438{
1481 WL w; 2439 WL w;
1482 2440
1483 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2441 if (expect_false (signum <= 0 || signum >= EV_NSIG))
1484 return; 2442 return;
1485 2443
1486 --signum; 2444 --signum;
1487 2445
1488#if EV_MULTIPLICITY 2446#if EV_MULTIPLICITY
… …
1492 if (expect_false (signals [signum].loop != EV_A)) 2450 if (expect_false (signals [signum].loop != EV_A))
1493 return; 2451 return;
1494#endif 2452#endif
1495 2453
1496 signals [signum].pending = 0; 2454 signals [signum].pending = 0;
2455 ECB_MEMORY_FENCE_RELEASE;
1497 2456
1498 for (w = signals [signum].head; w; w = w->next) 2457 for (w = signals [signum].head; w; w = w->next)
1499 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2458 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1500} 2459}
1501 2460
… …
1599#endif 2558#endif
1600#if EV_USE_SELECT 2559#if EV_USE_SELECT
1601# include "ev_select.c" 2560# include "ev_select.c"
1602#endif 2561#endif
1603 2562
1604int 2563int ecb_cold
1605ev_version_major (void) 2564ev_version_major (void) EV_THROW
1606{ 2565{
1607 return EV_VERSION_MAJOR; 2566 return EV_VERSION_MAJOR;
1608} 2567}
1609 2568
1610int 2569int ecb_cold
1611ev_version_minor (void) 2570ev_version_minor (void) EV_THROW
1612{ 2571{
1613 return EV_VERSION_MINOR; 2572 return EV_VERSION_MINOR;
1614} 2573}
1615 2574
1616/* return true if we are running with elevated privileges and should ignore env variables */ 2575/* return true if we are running with elevated privileges and should ignore env variables */
1617int inline_size 2576int inline_size ecb_cold
1618enable_secure (void) 2577enable_secure (void)
1619{ 2578{
1620#ifdef _WIN32 2579#ifdef _WIN32
1621 return 0; 2580 return 0;
1622#else 2581#else
1623 return getuid () != geteuid () 2582 return getuid () != geteuid ()
1624 || getgid () != getegid (); 2583 || getgid () != getegid ();
1625#endif 2584#endif
1626} 2585}
1627 2586
1628unsigned int 2587unsigned int ecb_cold
1629ev_supported_backends (void) 2588ev_supported_backends (void) EV_THROW
1630{ 2589{
1631 unsigned int flags = 0; 2590 unsigned int flags = 0;
1632 2591
1633 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2592 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1634 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2593 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
… …
1637 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2596 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1638 2597
1639 return flags; 2598 return flags;
1640} 2599}
1641 2600
1642unsigned int 2601unsigned int ecb_cold
1643ev_recommended_backends (void) 2602ev_recommended_backends (void) EV_THROW
1644{ 2603{
1645 unsigned int flags = ev_supported_backends (); 2604 unsigned int flags = ev_supported_backends ();
1646 2605
1647#ifndef __NetBSD__ 2606#ifndef __NetBSD__
1648 /* kqueue is borked on everything but netbsd apparently */ 2607 /* kqueue is borked on everything but netbsd apparently */
… …
1659#endif 2618#endif
1660 2619
1661 return flags; 2620 return flags;
1662} 2621}
1663 2622
1664unsigned int 2623unsigned int ecb_cold
1665ev_embeddable_backends (void) 2624ev_embeddable_backends (void) EV_THROW
1666{ 2625{
1667 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2626 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1668 2627
1669 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2628 /* 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 */ 2629 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
… …
1672 2631
1673 return flags; 2632 return flags;
1674} 2633}
1675 2634
1676unsigned int 2635unsigned int
1677ev_backend (EV_P) 2636ev_backend (EV_P) EV_THROW
1678{ 2637{
1679 return backend; 2638 return backend;
1680} 2639}
1681 2640
1682#if EV_FEATURE_API 2641#if EV_FEATURE_API
1683unsigned int 2642unsigned int
1684ev_iteration (EV_P) 2643ev_iteration (EV_P) EV_THROW
1685{ 2644{
1686 return loop_count; 2645 return loop_count;
1687} 2646}
1688 2647
1689unsigned int 2648unsigned int
1690ev_depth (EV_P) 2649ev_depth (EV_P) EV_THROW
1691{ 2650{
1692 return loop_depth; 2651 return loop_depth;
1693} 2652}
1694 2653
1695void 2654void
1696ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2655ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1697{ 2656{
1698 io_blocktime = interval; 2657 io_blocktime = interval;
1699} 2658}
1700 2659
1701void 2660void
1702ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2661ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1703{ 2662{
1704 timeout_blocktime = interval; 2663 timeout_blocktime = interval;
1705} 2664}
1706 2665
1707void 2666void
1708ev_set_userdata (EV_P_ void *data) 2667ev_set_userdata (EV_P_ void *data) EV_THROW
1709{ 2668{
1710 userdata = data; 2669 userdata = data;
1711} 2670}
1712 2671
1713void * 2672void *
1714ev_userdata (EV_P) 2673ev_userdata (EV_P) EV_THROW
1715{ 2674{
1716 return userdata; 2675 return userdata;
1717} 2676}
1718 2677
2678void
1719void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2679ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_THROW
1720{ 2680{
1721 invoke_cb = invoke_pending_cb; 2681 invoke_cb = invoke_pending_cb;
1722} 2682}
1723 2683
2684void
1724void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2685ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_THROW, void (*acquire)(EV_P) EV_THROW) EV_THROW
1725{ 2686{
1726 release_cb = release; 2687 release_cb = release;
1727 acquire_cb = acquire; 2688 acquire_cb = acquire;
1728} 2689}
1729#endif 2690#endif
1730 2691
1731/* initialise a loop structure, must be zero-initialised */ 2692/* initialise a loop structure, must be zero-initialised */
1732static void noinline 2693static void noinline ecb_cold
1733loop_init (EV_P_ unsigned int flags) 2694loop_init (EV_P_ unsigned int flags) EV_THROW
1734{ 2695{
1735 if (!backend) 2696 if (!backend)
1736 { 2697 {
1737 origflags = flags; 2698 origflags = flags;
1738 2699
… …
1765 if (!(flags & EVFLAG_NOENV) 2726 if (!(flags & EVFLAG_NOENV)
1766 && !enable_secure () 2727 && !enable_secure ()
1767 && getenv ("LIBEV_FLAGS")) 2728 && getenv ("LIBEV_FLAGS"))
1768 flags = atoi (getenv ("LIBEV_FLAGS")); 2729 flags = atoi (getenv ("LIBEV_FLAGS"));
1769 2730
1770 ev_rt_now = ev_time (); 2731 ev_rt_now = ev_time ();
1771 mn_now = get_clock (); 2732 mn_now = get_clock ();
1772 now_floor = mn_now; 2733 now_floor = mn_now;
1773 rtmn_diff = ev_rt_now - mn_now; 2734 rtmn_diff = ev_rt_now - mn_now;
1774#if EV_FEATURE_API 2735#if EV_FEATURE_API
1775 invoke_cb = ev_invoke_pending; 2736 invoke_cb = ev_invoke_pending;
1776#endif 2737#endif
1777 2738
1778 io_blocktime = 0.; 2739 io_blocktime = 0.;
1779 timeout_blocktime = 0.; 2740 timeout_blocktime = 0.;
1780 backend = 0; 2741 backend = 0;
1781 backend_fd = -1; 2742 backend_fd = -1;
1782 sig_pending = 0; 2743 sig_pending = 0;
1783#if EV_ASYNC_ENABLE 2744#if EV_ASYNC_ENABLE
1784 async_pending = 0; 2745 async_pending = 0;
1785#endif 2746#endif
2747 pipe_write_skipped = 0;
2748 pipe_write_wanted = 0;
2749 evpipe [0] = -1;
2750 evpipe [1] = -1;
1786#if EV_USE_INOTIFY 2751#if EV_USE_INOTIFY
1787 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 2752 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1788#endif 2753#endif
1789#if EV_USE_SIGNALFD 2754#if EV_USE_SIGNALFD
1790 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 2755 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1791#endif 2756#endif
1792 2757
1793 if (!(flags & EVBACKEND_MASK)) 2758 if (!(flags & EVBACKEND_MASK))
1794 flags |= ev_recommended_backends (); 2759 flags |= ev_recommended_backends ();
1795 2760
… …
1820#endif 2785#endif
1821 } 2786 }
1822} 2787}
1823 2788
1824/* free up a loop structure */ 2789/* free up a loop structure */
1825void 2790void ecb_cold
1826ev_loop_destroy (EV_P) 2791ev_loop_destroy (EV_P)
1827{ 2792{
1828 int i; 2793 int i;
1829 2794
1830#if EV_MULTIPLICITY 2795#if EV_MULTIPLICITY
… …
1841 EV_INVOKE_PENDING; 2806 EV_INVOKE_PENDING;
1842 } 2807 }
1843#endif 2808#endif
1844 2809
1845#if EV_CHILD_ENABLE 2810#if EV_CHILD_ENABLE
1846 if (ev_is_active (&childev)) 2811 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
1847 { 2812 {
1848 ev_ref (EV_A); /* child watcher */ 2813 ev_ref (EV_A); /* child watcher */
1849 ev_signal_stop (EV_A_ &childev); 2814 ev_signal_stop (EV_A_ &childev);
1850 } 2815 }
1851#endif 2816#endif
… …
1853 if (ev_is_active (&pipe_w)) 2818 if (ev_is_active (&pipe_w))
1854 { 2819 {
1855 /*ev_ref (EV_A);*/ 2820 /*ev_ref (EV_A);*/
1856 /*ev_io_stop (EV_A_ &pipe_w);*/ 2821 /*ev_io_stop (EV_A_ &pipe_w);*/
1857 2822
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]); 2823 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
1866 EV_WIN32_CLOSE_FD (evpipe [1]); 2824 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
1867 }
1868 } 2825 }
1869 2826
1870#if EV_USE_SIGNALFD 2827#if EV_USE_SIGNALFD
1871 if (ev_is_active (&sigfd_w)) 2828 if (ev_is_active (&sigfd_w))
1872 close (sigfd); 2829 close (sigfd);
… …
1958#endif 2915#endif
1959#if EV_USE_INOTIFY 2916#if EV_USE_INOTIFY
1960 infy_fork (EV_A); 2917 infy_fork (EV_A);
1961#endif 2918#endif
1962 2919
2920#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1963 if (ev_is_active (&pipe_w)) 2921 if (ev_is_active (&pipe_w))
1964 { 2922 {
1965 /* this "locks" the handlers against writing to the pipe */ 2923 /* 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 2924
1972 ev_ref (EV_A); 2925 ev_ref (EV_A);
1973 ev_io_stop (EV_A_ &pipe_w); 2926 ev_io_stop (EV_A_ &pipe_w);
1974 2927
1975#if EV_USE_EVENTFD
1976 if (evfd >= 0)
1977 close (evfd);
1978#endif
1979
1980 if (evpipe [0] >= 0) 2928 if (evpipe [0] >= 0)
1981 {
1982 EV_WIN32_CLOSE_FD (evpipe [0]); 2929 EV_WIN32_CLOSE_FD (evpipe [0]);
1983 EV_WIN32_CLOSE_FD (evpipe [1]);
1984 }
1985 2930
1986#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1987 evpipe_init (EV_A); 2931 evpipe_init (EV_A);
1988 /* now iterate over everything, in case we missed something */ 2932 /* iterate over everything, in case we missed something before */
1989 pipecb (EV_A_ &pipe_w, EV_READ); 2933 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
1990#endif
1991 } 2934 }
2935#endif
1992 2936
1993 postfork = 0; 2937 postfork = 0;
1994} 2938}
1995 2939
1996#if EV_MULTIPLICITY 2940#if EV_MULTIPLICITY
1997 2941
1998struct ev_loop * 2942struct ev_loop * ecb_cold
1999ev_loop_new (unsigned int flags) 2943ev_loop_new (unsigned int flags) EV_THROW
2000{ 2944{
2001 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2945 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
2002 2946
2003 memset (EV_A, 0, sizeof (struct ev_loop)); 2947 memset (EV_A, 0, sizeof (struct ev_loop));
2004 loop_init (EV_A_ flags); 2948 loop_init (EV_A_ flags);
… …
2011} 2955}
2012 2956
2013#endif /* multiplicity */ 2957#endif /* multiplicity */
2014 2958
2015#if EV_VERIFY 2959#if EV_VERIFY
2016static void noinline 2960static void noinline ecb_cold
2017verify_watcher (EV_P_ W w) 2961verify_watcher (EV_P_ W w)
2018{ 2962{
2019 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2963 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
2020 2964
2021 if (w->pending) 2965 if (w->pending)
2022 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2966 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
2023} 2967}
2024 2968
2025static void noinline 2969static void noinline ecb_cold
2026verify_heap (EV_P_ ANHE *heap, int N) 2970verify_heap (EV_P_ ANHE *heap, int N)
2027{ 2971{
2028 int i; 2972 int i;
2029 2973
2030 for (i = HEAP0; i < N + HEAP0; ++i) 2974 for (i = HEAP0; i < N + HEAP0; ++i)
… …
2035 2979
2036 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2980 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
2037 } 2981 }
2038} 2982}
2039 2983
2040static void noinline 2984static void noinline ecb_cold
2041array_verify (EV_P_ W *ws, int cnt) 2985array_verify (EV_P_ W *ws, int cnt)
2042{ 2986{
2043 while (cnt--) 2987 while (cnt--)
2044 { 2988 {
2045 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2989 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
2047 } 2991 }
2048} 2992}
2049#endif 2993#endif
2050 2994
2051#if EV_FEATURE_API 2995#if EV_FEATURE_API
2052void 2996void ecb_cold
2053ev_verify (EV_P) 2997ev_verify (EV_P) EV_THROW
2054{ 2998{
2055#if EV_VERIFY 2999#if EV_VERIFY
2056 int i; 3000 int i;
2057 WL w; 3001 WL w, w2;
2058 3002
2059 assert (activecnt >= -1); 3003 assert (activecnt >= -1);
2060 3004
2061 assert (fdchangemax >= fdchangecnt); 3005 assert (fdchangemax >= fdchangecnt);
2062 for (i = 0; i < fdchangecnt; ++i) 3006 for (i = 0; i < fdchangecnt; ++i)
2063 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 3007 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
2064 3008
2065 assert (anfdmax >= 0); 3009 assert (anfdmax >= 0);
2066 for (i = 0; i < anfdmax; ++i) 3010 for (i = 0; i < anfdmax; ++i)
3011 {
3012 int j = 0;
3013
2067 for (w = anfds [i].head; w; w = w->next) 3014 for (w = w2 = anfds [i].head; w; w = w->next)
2068 { 3015 {
2069 verify_watcher (EV_A_ (W)w); 3016 verify_watcher (EV_A_ (W)w);
3017
3018 if (j++ & 1)
3019 {
3020 assert (("libev: io watcher list contains a loop", w != w2));
3021 w2 = w2->next;
3022 }
3023
2070 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 3024 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)); 3025 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
2072 } 3026 }
3027 }
2073 3028
2074 assert (timermax >= timercnt); 3029 assert (timermax >= timercnt);
2075 verify_heap (EV_A_ timers, timercnt); 3030 verify_heap (EV_A_ timers, timercnt);
2076 3031
2077#if EV_PERIODIC_ENABLE 3032#if EV_PERIODIC_ENABLE
… …
2123#endif 3078#endif
2124} 3079}
2125#endif 3080#endif
2126 3081
2127#if EV_MULTIPLICITY 3082#if EV_MULTIPLICITY
2128struct ev_loop * 3083struct ev_loop * ecb_cold
2129#else 3084#else
2130int 3085int
2131#endif 3086#endif
2132ev_default_loop (unsigned int flags) 3087ev_default_loop (unsigned int flags) EV_THROW
2133{ 3088{
2134 if (!ev_default_loop_ptr) 3089 if (!ev_default_loop_ptr)
2135 { 3090 {
2136#if EV_MULTIPLICITY 3091#if EV_MULTIPLICITY
2137 EV_P = ev_default_loop_ptr = &default_loop_struct; 3092 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
2156 3111
2157 return ev_default_loop_ptr; 3112 return ev_default_loop_ptr;
2158} 3113}
2159 3114
2160void 3115void
2161ev_loop_fork (EV_P) 3116ev_loop_fork (EV_P) EV_THROW
2162{ 3117{
2163 postfork = 1; /* must be in line with ev_default_fork */ 3118 postfork = 1;
2164} 3119}
2165 3120
2166/*****************************************************************************/ 3121/*****************************************************************************/
2167 3122
2168void 3123void
… …
2170{ 3125{
2171 EV_CB_INVOKE ((W)w, revents); 3126 EV_CB_INVOKE ((W)w, revents);
2172} 3127}
2173 3128
2174unsigned int 3129unsigned int
2175ev_pending_count (EV_P) 3130ev_pending_count (EV_P) EV_THROW
2176{ 3131{
2177 int pri; 3132 int pri;
2178 unsigned int count = 0; 3133 unsigned int count = 0;
2179 3134
2180 for (pri = NUMPRI; pri--; ) 3135 for (pri = NUMPRI; pri--; )
… …
2184} 3139}
2185 3140
2186void noinline 3141void noinline
2187ev_invoke_pending (EV_P) 3142ev_invoke_pending (EV_P)
2188{ 3143{
2189 int pri; 3144 pendingpri = NUMPRI;
2190 3145
2191 for (pri = NUMPRI; pri--; ) 3146 while (pendingpri) /* pendingpri possibly gets modified in the inner loop */
3147 {
3148 --pendingpri;
3149
2192 while (pendingcnt [pri]) 3150 while (pendingcnt [pendingpri])
2193 { 3151 {
2194 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3152 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2195 3153
2196 p->w->pending = 0; 3154 p->w->pending = 0;
2197 EV_CB_INVOKE (p->w, p->events); 3155 EV_CB_INVOKE (p->w, p->events);
2198 EV_FREQUENT_CHECK; 3156 EV_FREQUENT_CHECK;
2199 } 3157 }
3158 }
2200} 3159}
2201 3160
2202#if EV_IDLE_ENABLE 3161#if EV_IDLE_ENABLE
2203/* make idle watchers pending. this handles the "call-idle */ 3162/* make idle watchers pending. this handles the "call-idle */
2204/* only when higher priorities are idle" logic */ 3163/* only when higher priorities are idle" logic */
… …
2294{ 3253{
2295 EV_FREQUENT_CHECK; 3254 EV_FREQUENT_CHECK;
2296 3255
2297 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3256 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2298 { 3257 {
2299 int feed_count = 0;
2300
2301 do 3258 do
2302 { 3259 {
2303 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3260 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2304 3261
2305 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3262 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
2332 } 3289 }
2333} 3290}
2334 3291
2335/* simply recalculate all periodics */ 3292/* simply recalculate all periodics */
2336/* TODO: maybe ensure that at least one event happens when jumping forward? */ 3293/* TODO: maybe ensure that at least one event happens when jumping forward? */
2337static void noinline 3294static void noinline ecb_cold
2338periodics_reschedule (EV_P) 3295periodics_reschedule (EV_P)
2339{ 3296{
2340 int i; 3297 int i;
2341 3298
2342 /* adjust periodics after time jump */ 3299 /* adjust periodics after time jump */
… …
2355 reheap (periodics, periodiccnt); 3312 reheap (periodics, periodiccnt);
2356} 3313}
2357#endif 3314#endif
2358 3315
2359/* adjust all timers by a given offset */ 3316/* adjust all timers by a given offset */
2360static void noinline 3317static void noinline ecb_cold
2361timers_reschedule (EV_P_ ev_tstamp adjust) 3318timers_reschedule (EV_P_ ev_tstamp adjust)
2362{ 3319{
2363 int i; 3320 int i;
2364 3321
2365 for (i = 0; i < timercnt; ++i) 3322 for (i = 0; i < timercnt; ++i)
… …
2439 3396
2440 mn_now = ev_rt_now; 3397 mn_now = ev_rt_now;
2441 } 3398 }
2442} 3399}
2443 3400
2444void 3401int
2445ev_run (EV_P_ int flags) 3402ev_run (EV_P_ int flags)
2446{ 3403{
2447#if EV_FEATURE_API 3404#if EV_FEATURE_API
2448 ++loop_depth; 3405 ++loop_depth;
2449#endif 3406#endif
… …
2507 ev_tstamp prev_mn_now = mn_now; 3464 ev_tstamp prev_mn_now = mn_now;
2508 3465
2509 /* update time to cancel out callback processing overhead */ 3466 /* update time to cancel out callback processing overhead */
2510 time_update (EV_A_ 1e100); 3467 time_update (EV_A_ 1e100);
2511 3468
3469 /* from now on, we want a pipe-wake-up */
3470 pipe_write_wanted = 1;
3471
3472 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3473
2512 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt))) 3474 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2513 { 3475 {
2514 waittime = MAX_BLOCKTIME; 3476 waittime = MAX_BLOCKTIME;
2515 3477
2516 if (timercnt) 3478 if (timercnt)
2517 { 3479 {
2518 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3480 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2519 if (waittime > to) waittime = to; 3481 if (waittime > to) waittime = to;
2520 } 3482 }
2521 3483
2522#if EV_PERIODIC_ENABLE 3484#if EV_PERIODIC_ENABLE
2523 if (periodiccnt) 3485 if (periodiccnt)
2524 { 3486 {
2525 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3487 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2526 if (waittime > to) waittime = to; 3488 if (waittime > to) waittime = to;
2527 } 3489 }
2528#endif 3490#endif
2529 3491
2530 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3492 /* don't let timeouts decrease the waittime below timeout_blocktime */
2531 if (expect_false (waittime < timeout_blocktime)) 3493 if (expect_false (waittime < timeout_blocktime))
2532 waittime = timeout_blocktime; 3494 waittime = timeout_blocktime;
3495
3496 /* at this point, we NEED to wait, so we have to ensure */
3497 /* to pass a minimum nonzero value to the backend */
3498 if (expect_false (waittime < backend_mintime))
3499 waittime = backend_mintime;
2533 3500
2534 /* extra check because io_blocktime is commonly 0 */ 3501 /* extra check because io_blocktime is commonly 0 */
2535 if (expect_false (io_blocktime)) 3502 if (expect_false (io_blocktime))
2536 { 3503 {
2537 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3504 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2538 3505
2539 if (sleeptime > waittime - backend_fudge) 3506 if (sleeptime > waittime - backend_mintime)
2540 sleeptime = waittime - backend_fudge; 3507 sleeptime = waittime - backend_mintime;
2541 3508
2542 if (expect_true (sleeptime > 0.)) 3509 if (expect_true (sleeptime > 0.))
2543 { 3510 {
2544 ev_sleep (sleeptime); 3511 ev_sleep (sleeptime);
2545 waittime -= sleeptime; 3512 waittime -= sleeptime;
… …
2552#endif 3519#endif
2553 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */ 3520 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2554 backend_poll (EV_A_ waittime); 3521 backend_poll (EV_A_ waittime);
2555 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */ 3522 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2556 3523
3524 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3525
3526 ECB_MEMORY_FENCE_ACQUIRE;
3527 if (pipe_write_skipped)
3528 {
3529 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3530 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3531 }
3532
3533
2557 /* update ev_rt_now, do magic */ 3534 /* update ev_rt_now, do magic */
2558 time_update (EV_A_ waittime + sleeptime); 3535 time_update (EV_A_ waittime + sleeptime);
2559 } 3536 }
2560 3537
2561 /* queue pending timers and reschedule them */ 3538 /* queue pending timers and reschedule them */
… …
2587 loop_done = EVBREAK_CANCEL; 3564 loop_done = EVBREAK_CANCEL;
2588 3565
2589#if EV_FEATURE_API 3566#if EV_FEATURE_API
2590 --loop_depth; 3567 --loop_depth;
2591#endif 3568#endif
3569
3570 return activecnt;
2592} 3571}
2593 3572
2594void 3573void
2595ev_break (EV_P_ int how) 3574ev_break (EV_P_ int how) EV_THROW
2596{ 3575{
2597 loop_done = how; 3576 loop_done = how;
2598} 3577}
2599 3578
2600void 3579void
2601ev_ref (EV_P) 3580ev_ref (EV_P) EV_THROW
2602{ 3581{
2603 ++activecnt; 3582 ++activecnt;
2604} 3583}
2605 3584
2606void 3585void
2607ev_unref (EV_P) 3586ev_unref (EV_P) EV_THROW
2608{ 3587{
2609 --activecnt; 3588 --activecnt;
2610} 3589}
2611 3590
2612void 3591void
2613ev_now_update (EV_P) 3592ev_now_update (EV_P) EV_THROW
2614{ 3593{
2615 time_update (EV_A_ 1e100); 3594 time_update (EV_A_ 1e100);
2616} 3595}
2617 3596
2618void 3597void
2619ev_suspend (EV_P) 3598ev_suspend (EV_P) EV_THROW
2620{ 3599{
2621 ev_now_update (EV_A); 3600 ev_now_update (EV_A);
2622} 3601}
2623 3602
2624void 3603void
2625ev_resume (EV_P) 3604ev_resume (EV_P) EV_THROW
2626{ 3605{
2627 ev_tstamp mn_prev = mn_now; 3606 ev_tstamp mn_prev = mn_now;
2628 3607
2629 ev_now_update (EV_A); 3608 ev_now_update (EV_A);
2630 timers_reschedule (EV_A_ mn_now - mn_prev); 3609 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2669 w->pending = 0; 3648 w->pending = 0;
2670 } 3649 }
2671} 3650}
2672 3651
2673int 3652int
2674ev_clear_pending (EV_P_ void *w) 3653ev_clear_pending (EV_P_ void *w) EV_THROW
2675{ 3654{
2676 W w_ = (W)w; 3655 W w_ = (W)w;
2677 int pending = w_->pending; 3656 int pending = w_->pending;
2678 3657
2679 if (expect_true (pending)) 3658 if (expect_true (pending))
… …
2712} 3691}
2713 3692
2714/*****************************************************************************/ 3693/*****************************************************************************/
2715 3694
2716void noinline 3695void noinline
2717ev_io_start (EV_P_ ev_io *w) 3696ev_io_start (EV_P_ ev_io *w) EV_THROW
2718{ 3697{
2719 int fd = w->fd; 3698 int fd = w->fd;
2720 3699
2721 if (expect_false (ev_is_active (w))) 3700 if (expect_false (ev_is_active (w)))
2722 return; 3701 return;
… …
2728 3707
2729 ev_start (EV_A_ (W)w, 1); 3708 ev_start (EV_A_ (W)w, 1);
2730 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3709 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2731 wlist_add (&anfds[fd].head, (WL)w); 3710 wlist_add (&anfds[fd].head, (WL)w);
2732 3711
3712 /* common bug, apparently */
3713 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3714
2733 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 3715 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2734 w->events &= ~EV__IOFDSET; 3716 w->events &= ~EV__IOFDSET;
2735 3717
2736 EV_FREQUENT_CHECK; 3718 EV_FREQUENT_CHECK;
2737} 3719}
2738 3720
2739void noinline 3721void noinline
2740ev_io_stop (EV_P_ ev_io *w) 3722ev_io_stop (EV_P_ ev_io *w) EV_THROW
2741{ 3723{
2742 clear_pending (EV_A_ (W)w); 3724 clear_pending (EV_A_ (W)w);
2743 if (expect_false (!ev_is_active (w))) 3725 if (expect_false (!ev_is_active (w)))
2744 return; 3726 return;
2745 3727
… …
2754 3736
2755 EV_FREQUENT_CHECK; 3737 EV_FREQUENT_CHECK;
2756} 3738}
2757 3739
2758void noinline 3740void noinline
2759ev_timer_start (EV_P_ ev_timer *w) 3741ev_timer_start (EV_P_ ev_timer *w) EV_THROW
2760{ 3742{
2761 if (expect_false (ev_is_active (w))) 3743 if (expect_false (ev_is_active (w)))
2762 return; 3744 return;
2763 3745
2764 ev_at (w) += mn_now; 3746 ev_at (w) += mn_now;
… …
2778 3760
2779 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3761 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2780} 3762}
2781 3763
2782void noinline 3764void noinline
2783ev_timer_stop (EV_P_ ev_timer *w) 3765ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
2784{ 3766{
2785 clear_pending (EV_A_ (W)w); 3767 clear_pending (EV_A_ (W)w);
2786 if (expect_false (!ev_is_active (w))) 3768 if (expect_false (!ev_is_active (w)))
2787 return; 3769 return;
2788 3770
… …
2808 3790
2809 EV_FREQUENT_CHECK; 3791 EV_FREQUENT_CHECK;
2810} 3792}
2811 3793
2812void noinline 3794void noinline
2813ev_timer_again (EV_P_ ev_timer *w) 3795ev_timer_again (EV_P_ ev_timer *w) EV_THROW
2814{ 3796{
2815 EV_FREQUENT_CHECK; 3797 EV_FREQUENT_CHECK;
3798
3799 clear_pending (EV_A_ (W)w);
2816 3800
2817 if (ev_is_active (w)) 3801 if (ev_is_active (w))
2818 { 3802 {
2819 if (w->repeat) 3803 if (w->repeat)
2820 { 3804 {
… …
2833 3817
2834 EV_FREQUENT_CHECK; 3818 EV_FREQUENT_CHECK;
2835} 3819}
2836 3820
2837ev_tstamp 3821ev_tstamp
2838ev_timer_remaining (EV_P_ ev_timer *w) 3822ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW
2839{ 3823{
2840 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 3824 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2841} 3825}
2842 3826
2843#if EV_PERIODIC_ENABLE 3827#if EV_PERIODIC_ENABLE
2844void noinline 3828void noinline
2845ev_periodic_start (EV_P_ ev_periodic *w) 3829ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
2846{ 3830{
2847 if (expect_false (ev_is_active (w))) 3831 if (expect_false (ev_is_active (w)))
2848 return; 3832 return;
2849 3833
2850 if (w->reschedule_cb) 3834 if (w->reschedule_cb)
… …
2870 3854
2871 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 3855 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2872} 3856}
2873 3857
2874void noinline 3858void noinline
2875ev_periodic_stop (EV_P_ ev_periodic *w) 3859ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
2876{ 3860{
2877 clear_pending (EV_A_ (W)w); 3861 clear_pending (EV_A_ (W)w);
2878 if (expect_false (!ev_is_active (w))) 3862 if (expect_false (!ev_is_active (w)))
2879 return; 3863 return;
2880 3864
… …
2898 3882
2899 EV_FREQUENT_CHECK; 3883 EV_FREQUENT_CHECK;
2900} 3884}
2901 3885
2902void noinline 3886void noinline
2903ev_periodic_again (EV_P_ ev_periodic *w) 3887ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
2904{ 3888{
2905 /* TODO: use adjustheap and recalculation */ 3889 /* TODO: use adjustheap and recalculation */
2906 ev_periodic_stop (EV_A_ w); 3890 ev_periodic_stop (EV_A_ w);
2907 ev_periodic_start (EV_A_ w); 3891 ev_periodic_start (EV_A_ w);
2908} 3892}
… …
2913#endif 3897#endif
2914 3898
2915#if EV_SIGNAL_ENABLE 3899#if EV_SIGNAL_ENABLE
2916 3900
2917void noinline 3901void noinline
2918ev_signal_start (EV_P_ ev_signal *w) 3902ev_signal_start (EV_P_ ev_signal *w) EV_THROW
2919{ 3903{
2920 if (expect_false (ev_is_active (w))) 3904 if (expect_false (ev_is_active (w)))
2921 return; 3905 return;
2922 3906
2923 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 3907 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
… …
2925#if EV_MULTIPLICITY 3909#if EV_MULTIPLICITY
2926 assert (("libev: a signal must not be attached to two different loops", 3910 assert (("libev: a signal must not be attached to two different loops",
2927 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 3911 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2928 3912
2929 signals [w->signum - 1].loop = EV_A; 3913 signals [w->signum - 1].loop = EV_A;
3914 ECB_MEMORY_FENCE_RELEASE;
2930#endif 3915#endif
2931 3916
2932 EV_FREQUENT_CHECK; 3917 EV_FREQUENT_CHECK;
2933 3918
2934#if EV_USE_SIGNALFD 3919#if EV_USE_SIGNALFD
… …
2994 3979
2995 EV_FREQUENT_CHECK; 3980 EV_FREQUENT_CHECK;
2996} 3981}
2997 3982
2998void noinline 3983void noinline
2999ev_signal_stop (EV_P_ ev_signal *w) 3984ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
3000{ 3985{
3001 clear_pending (EV_A_ (W)w); 3986 clear_pending (EV_A_ (W)w);
3002 if (expect_false (!ev_is_active (w))) 3987 if (expect_false (!ev_is_active (w)))
3003 return; 3988 return;
3004 3989
… …
3035#endif 4020#endif
3036 4021
3037#if EV_CHILD_ENABLE 4022#if EV_CHILD_ENABLE
3038 4023
3039void 4024void
3040ev_child_start (EV_P_ ev_child *w) 4025ev_child_start (EV_P_ ev_child *w) EV_THROW
3041{ 4026{
3042#if EV_MULTIPLICITY 4027#if EV_MULTIPLICITY
3043 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4028 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
3044#endif 4029#endif
3045 if (expect_false (ev_is_active (w))) 4030 if (expect_false (ev_is_active (w)))
… …
3052 4037
3053 EV_FREQUENT_CHECK; 4038 EV_FREQUENT_CHECK;
3054} 4039}
3055 4040
3056void 4041void
3057ev_child_stop (EV_P_ ev_child *w) 4042ev_child_stop (EV_P_ ev_child *w) EV_THROW
3058{ 4043{
3059 clear_pending (EV_A_ (W)w); 4044 clear_pending (EV_A_ (W)w);
3060 if (expect_false (!ev_is_active (w))) 4045 if (expect_false (!ev_is_active (w)))
3061 return; 4046 return;
3062 4047
… …
3089# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 4074# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
3090 4075
3091static void noinline 4076static void noinline
3092infy_add (EV_P_ ev_stat *w) 4077infy_add (EV_P_ ev_stat *w)
3093{ 4078{
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); 4079 w->wd = inotify_add_watch (fs_fd, w->path,
4080 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
4081 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
4082 | IN_DONT_FOLLOW | IN_MASK_ADD);
3095 4083
3096 if (w->wd >= 0) 4084 if (w->wd >= 0)
3097 { 4085 {
3098 struct statfs sfs; 4086 struct statfs sfs;
3099 4087
… …
3103 4091
3104 if (!fs_2625) 4092 if (!fs_2625)
3105 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4093 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3106 else if (!statfs (w->path, &sfs) 4094 else if (!statfs (w->path, &sfs)
3107 && (sfs.f_type == 0x1373 /* devfs */ 4095 && (sfs.f_type == 0x1373 /* devfs */
4096 || sfs.f_type == 0x4006 /* fat */
4097 || sfs.f_type == 0x4d44 /* msdos */
3108 || sfs.f_type == 0xEF53 /* ext2/3 */ 4098 || sfs.f_type == 0xEF53 /* ext2/3 */
4099 || sfs.f_type == 0x72b6 /* jffs2 */
4100 || sfs.f_type == 0x858458f6 /* ramfs */
4101 || sfs.f_type == 0x5346544e /* ntfs */
3109 || sfs.f_type == 0x3153464a /* jfs */ 4102 || sfs.f_type == 0x3153464a /* jfs */
4103 || sfs.f_type == 0x9123683e /* btrfs */
3110 || sfs.f_type == 0x52654973 /* reiser3 */ 4104 || sfs.f_type == 0x52654973 /* reiser3 */
3111 || sfs.f_type == 0x01021994 /* tempfs */ 4105 || sfs.f_type == 0x01021994 /* tmpfs */
3112 || sfs.f_type == 0x58465342 /* xfs */)) 4106 || sfs.f_type == 0x58465342 /* xfs */))
3113 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ 4107 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3114 else 4108 else
3115 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ 4109 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
3116 } 4110 }
… …
3214 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4208 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3215 ofs += sizeof (struct inotify_event) + ev->len; 4209 ofs += sizeof (struct inotify_event) + ev->len;
3216 } 4210 }
3217} 4211}
3218 4212
3219inline_size void 4213inline_size void ecb_cold
3220ev_check_2625 (EV_P) 4214ev_check_2625 (EV_P)
3221{ 4215{
3222 /* kernels < 2.6.25 are borked 4216 /* kernels < 2.6.25 are borked
3223 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4217 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3224 */ 4218 */
… …
3229} 4223}
3230 4224
3231inline_size int 4225inline_size int
3232infy_newfd (void) 4226infy_newfd (void)
3233{ 4227{
3234#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 4228#if defined IN_CLOEXEC && defined IN_NONBLOCK
3235 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 4229 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3236 if (fd >= 0) 4230 if (fd >= 0)
3237 return fd; 4231 return fd;
3238#endif 4232#endif
3239 return inotify_init (); 4233 return inotify_init ();
… …
3314#else 4308#else
3315# define EV_LSTAT(p,b) lstat (p, b) 4309# define EV_LSTAT(p,b) lstat (p, b)
3316#endif 4310#endif
3317 4311
3318void 4312void
3319ev_stat_stat (EV_P_ ev_stat *w) 4313ev_stat_stat (EV_P_ ev_stat *w) EV_THROW
3320{ 4314{
3321 if (lstat (w->path, &w->attr) < 0) 4315 if (lstat (w->path, &w->attr) < 0)
3322 w->attr.st_nlink = 0; 4316 w->attr.st_nlink = 0;
3323 else if (!w->attr.st_nlink) 4317 else if (!w->attr.st_nlink)
3324 w->attr.st_nlink = 1; 4318 w->attr.st_nlink = 1;
… …
3363 ev_feed_event (EV_A_ w, EV_STAT); 4357 ev_feed_event (EV_A_ w, EV_STAT);
3364 } 4358 }
3365} 4359}
3366 4360
3367void 4361void
3368ev_stat_start (EV_P_ ev_stat *w) 4362ev_stat_start (EV_P_ ev_stat *w) EV_THROW
3369{ 4363{
3370 if (expect_false (ev_is_active (w))) 4364 if (expect_false (ev_is_active (w)))
3371 return; 4365 return;
3372 4366
3373 ev_stat_stat (EV_A_ w); 4367 ev_stat_stat (EV_A_ w);
… …
3394 4388
3395 EV_FREQUENT_CHECK; 4389 EV_FREQUENT_CHECK;
3396} 4390}
3397 4391
3398void 4392void
3399ev_stat_stop (EV_P_ ev_stat *w) 4393ev_stat_stop (EV_P_ ev_stat *w) EV_THROW
3400{ 4394{
3401 clear_pending (EV_A_ (W)w); 4395 clear_pending (EV_A_ (W)w);
3402 if (expect_false (!ev_is_active (w))) 4396 if (expect_false (!ev_is_active (w)))
3403 return; 4397 return;
3404 4398
… …
3420} 4414}
3421#endif 4415#endif
3422 4416
3423#if EV_IDLE_ENABLE 4417#if EV_IDLE_ENABLE
3424void 4418void
3425ev_idle_start (EV_P_ ev_idle *w) 4419ev_idle_start (EV_P_ ev_idle *w) EV_THROW
3426{ 4420{
3427 if (expect_false (ev_is_active (w))) 4421 if (expect_false (ev_is_active (w)))
3428 return; 4422 return;
3429 4423
3430 pri_adjust (EV_A_ (W)w); 4424 pri_adjust (EV_A_ (W)w);
… …
3443 4437
3444 EV_FREQUENT_CHECK; 4438 EV_FREQUENT_CHECK;
3445} 4439}
3446 4440
3447void 4441void
3448ev_idle_stop (EV_P_ ev_idle *w) 4442ev_idle_stop (EV_P_ ev_idle *w) EV_THROW
3449{ 4443{
3450 clear_pending (EV_A_ (W)w); 4444 clear_pending (EV_A_ (W)w);
3451 if (expect_false (!ev_is_active (w))) 4445 if (expect_false (!ev_is_active (w)))
3452 return; 4446 return;
3453 4447
… …
3467} 4461}
3468#endif 4462#endif
3469 4463
3470#if EV_PREPARE_ENABLE 4464#if EV_PREPARE_ENABLE
3471void 4465void
3472ev_prepare_start (EV_P_ ev_prepare *w) 4466ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW
3473{ 4467{
3474 if (expect_false (ev_is_active (w))) 4468 if (expect_false (ev_is_active (w)))
3475 return; 4469 return;
3476 4470
3477 EV_FREQUENT_CHECK; 4471 EV_FREQUENT_CHECK;
… …
3482 4476
3483 EV_FREQUENT_CHECK; 4477 EV_FREQUENT_CHECK;
3484} 4478}
3485 4479
3486void 4480void
3487ev_prepare_stop (EV_P_ ev_prepare *w) 4481ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW
3488{ 4482{
3489 clear_pending (EV_A_ (W)w); 4483 clear_pending (EV_A_ (W)w);
3490 if (expect_false (!ev_is_active (w))) 4484 if (expect_false (!ev_is_active (w)))
3491 return; 4485 return;
3492 4486
… …
3505} 4499}
3506#endif 4500#endif
3507 4501
3508#if EV_CHECK_ENABLE 4502#if EV_CHECK_ENABLE
3509void 4503void
3510ev_check_start (EV_P_ ev_check *w) 4504ev_check_start (EV_P_ ev_check *w) EV_THROW
3511{ 4505{
3512 if (expect_false (ev_is_active (w))) 4506 if (expect_false (ev_is_active (w)))
3513 return; 4507 return;
3514 4508
3515 EV_FREQUENT_CHECK; 4509 EV_FREQUENT_CHECK;
… …
3520 4514
3521 EV_FREQUENT_CHECK; 4515 EV_FREQUENT_CHECK;
3522} 4516}
3523 4517
3524void 4518void
3525ev_check_stop (EV_P_ ev_check *w) 4519ev_check_stop (EV_P_ ev_check *w) EV_THROW
3526{ 4520{
3527 clear_pending (EV_A_ (W)w); 4521 clear_pending (EV_A_ (W)w);
3528 if (expect_false (!ev_is_active (w))) 4522 if (expect_false (!ev_is_active (w)))
3529 return; 4523 return;
3530 4524
… …
3543} 4537}
3544#endif 4538#endif
3545 4539
3546#if EV_EMBED_ENABLE 4540#if EV_EMBED_ENABLE
3547void noinline 4541void noinline
3548ev_embed_sweep (EV_P_ ev_embed *w) 4542ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
3549{ 4543{
3550 ev_run (w->other, EVRUN_NOWAIT); 4544 ev_run (w->other, EVRUN_NOWAIT);
3551} 4545}
3552 4546
3553static void 4547static void
… …
3601 ev_idle_stop (EV_A_ idle); 4595 ev_idle_stop (EV_A_ idle);
3602} 4596}
3603#endif 4597#endif
3604 4598
3605void 4599void
3606ev_embed_start (EV_P_ ev_embed *w) 4600ev_embed_start (EV_P_ ev_embed *w) EV_THROW
3607{ 4601{
3608 if (expect_false (ev_is_active (w))) 4602 if (expect_false (ev_is_active (w)))
3609 return; 4603 return;
3610 4604
3611 { 4605 {
… …
3632 4626
3633 EV_FREQUENT_CHECK; 4627 EV_FREQUENT_CHECK;
3634} 4628}
3635 4629
3636void 4630void
3637ev_embed_stop (EV_P_ ev_embed *w) 4631ev_embed_stop (EV_P_ ev_embed *w) EV_THROW
3638{ 4632{
3639 clear_pending (EV_A_ (W)w); 4633 clear_pending (EV_A_ (W)w);
3640 if (expect_false (!ev_is_active (w))) 4634 if (expect_false (!ev_is_active (w)))
3641 return; 4635 return;
3642 4636
… …
3652} 4646}
3653#endif 4647#endif
3654 4648
3655#if EV_FORK_ENABLE 4649#if EV_FORK_ENABLE
3656void 4650void
3657ev_fork_start (EV_P_ ev_fork *w) 4651ev_fork_start (EV_P_ ev_fork *w) EV_THROW
3658{ 4652{
3659 if (expect_false (ev_is_active (w))) 4653 if (expect_false (ev_is_active (w)))
3660 return; 4654 return;
3661 4655
3662 EV_FREQUENT_CHECK; 4656 EV_FREQUENT_CHECK;
… …
3667 4661
3668 EV_FREQUENT_CHECK; 4662 EV_FREQUENT_CHECK;
3669} 4663}
3670 4664
3671void 4665void
3672ev_fork_stop (EV_P_ ev_fork *w) 4666ev_fork_stop (EV_P_ ev_fork *w) EV_THROW
3673{ 4667{
3674 clear_pending (EV_A_ (W)w); 4668 clear_pending (EV_A_ (W)w);
3675 if (expect_false (!ev_is_active (w))) 4669 if (expect_false (!ev_is_active (w)))
3676 return; 4670 return;
3677 4671
… …
3690} 4684}
3691#endif 4685#endif
3692 4686
3693#if EV_CLEANUP_ENABLE 4687#if EV_CLEANUP_ENABLE
3694void 4688void
3695ev_cleanup_start (EV_P_ ev_cleanup *w) 4689ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW
3696{ 4690{
3697 if (expect_false (ev_is_active (w))) 4691 if (expect_false (ev_is_active (w)))
3698 return; 4692 return;
3699 4693
3700 EV_FREQUENT_CHECK; 4694 EV_FREQUENT_CHECK;
… …
3707 ev_unref (EV_A); 4701 ev_unref (EV_A);
3708 EV_FREQUENT_CHECK; 4702 EV_FREQUENT_CHECK;
3709} 4703}
3710 4704
3711void 4705void
3712ev_cleanup_stop (EV_P_ ev_cleanup *w) 4706ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW
3713{ 4707{
3714 clear_pending (EV_A_ (W)w); 4708 clear_pending (EV_A_ (W)w);
3715 if (expect_false (!ev_is_active (w))) 4709 if (expect_false (!ev_is_active (w)))
3716 return; 4710 return;
3717 4711
… …
3731} 4725}
3732#endif 4726#endif
3733 4727
3734#if EV_ASYNC_ENABLE 4728#if EV_ASYNC_ENABLE
3735void 4729void
3736ev_async_start (EV_P_ ev_async *w) 4730ev_async_start (EV_P_ ev_async *w) EV_THROW
3737{ 4731{
3738 if (expect_false (ev_is_active (w))) 4732 if (expect_false (ev_is_active (w)))
3739 return; 4733 return;
3740 4734
3741 w->sent = 0; 4735 w->sent = 0;
… …
3750 4744
3751 EV_FREQUENT_CHECK; 4745 EV_FREQUENT_CHECK;
3752} 4746}
3753 4747
3754void 4748void
3755ev_async_stop (EV_P_ ev_async *w) 4749ev_async_stop (EV_P_ ev_async *w) EV_THROW
3756{ 4750{
3757 clear_pending (EV_A_ (W)w); 4751 clear_pending (EV_A_ (W)w);
3758 if (expect_false (!ev_is_active (w))) 4752 if (expect_false (!ev_is_active (w)))
3759 return; 4753 return;
3760 4754
… …
3771 4765
3772 EV_FREQUENT_CHECK; 4766 EV_FREQUENT_CHECK;
3773} 4767}
3774 4768
3775void 4769void
3776ev_async_send (EV_P_ ev_async *w) 4770ev_async_send (EV_P_ ev_async *w) EV_THROW
3777{ 4771{
3778 w->sent = 1; 4772 w->sent = 1;
3779 evpipe_write (EV_A_ &async_pending); 4773 evpipe_write (EV_A_ &async_pending);
3780} 4774}
3781#endif 4775#endif
… …
3818 4812
3819 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 4813 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3820} 4814}
3821 4815
3822void 4816void
3823ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 4817ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW
3824{ 4818{
3825 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4819 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3826 4820
3827 if (expect_false (!once)) 4821 if (expect_false (!once))
3828 { 4822 {
… …
3849} 4843}
3850 4844
3851/*****************************************************************************/ 4845/*****************************************************************************/
3852 4846
3853#if EV_WALK_ENABLE 4847#if EV_WALK_ENABLE
3854void 4848void ecb_cold
3855ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 4849ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW
3856{ 4850{
3857 int i, j; 4851 int i, j;
3858 ev_watcher_list *wl, *wn; 4852 ev_watcher_list *wl, *wn;
3859 4853
3860 if (types & (EV_IO | EV_EMBED)) 4854 if (types & (EV_IO | EV_EMBED))
… …
3903 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 4897 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3904#endif 4898#endif
3905 4899
3906#if EV_IDLE_ENABLE 4900#if EV_IDLE_ENABLE
3907 if (types & EV_IDLE) 4901 if (types & EV_IDLE)
3908 for (j = NUMPRI; i--; ) 4902 for (j = NUMPRI; j--; )
3909 for (i = idlecnt [j]; i--; ) 4903 for (i = idlecnt [j]; i--; )
3910 cb (EV_A_ EV_IDLE, idles [j][i]); 4904 cb (EV_A_ EV_IDLE, idles [j][i]);
3911#endif 4905#endif
3912 4906
3913#if EV_FORK_ENABLE 4907#if EV_FORK_ENABLE
… …
3966 4960
3967#if EV_MULTIPLICITY 4961#if EV_MULTIPLICITY
3968 #include "ev_wrap.h" 4962 #include "ev_wrap.h"
3969#endif 4963#endif
3970 4964
3971EV_CPP(})
3972

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